* vlv punit and sideband tidy
@ 2018-03-07 19:41 Chris Wilson
2018-03-07 19:41 ` [PATCH 01/10] drm/i915: Disable preemption and sleeping while using the punit sideband Chris Wilson
` (14 more replies)
0 siblings, 15 replies; 19+ messages in thread
From: Chris Wilson @ 2018-03-07 19:41 UTC (permalink / raw)
To: intel-gfx
While we continue to observe hangs even with this w/a in place, I do
believe we are in a better position (although that may just be my
confirmation bias). I certainly don't think it's all happy yet. Mika
believes that if we keep the cpu in C0 whilst the gpu is busy, then it
behaves much better -- but that is a very tough sell; virtually disabling
cpu powersaving entirely, for the gpu rarely sleeps under the target
workloads.
Still I think this series moves us forwards and would appreciation acks
or an outright nak to drop it. :)
-Chris
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^ permalink raw reply [flat|nested] 19+ messages in thread
* [PATCH 01/10] drm/i915: Disable preemption and sleeping while using the punit sideband
2018-03-07 19:41 vlv punit and sideband tidy Chris Wilson
@ 2018-03-07 19:41 ` Chris Wilson
2018-03-07 19:41 ` [PATCH 02/10] drm/i915: Lift acquiring the vlv punit magic to a common sb-get Chris Wilson
` (13 subsequent siblings)
14 siblings, 0 replies; 19+ messages in thread
From: Chris Wilson @ 2018-03-07 19:41 UTC (permalink / raw)
To: intel-gfx; +Cc: Hans de Goede
While we talk to the punit over its sideband, we need to prevent the cpu
from sleeping in order to prevent a potential machine hang.
Note that by itself, it appears that pm_qos_update_request (via
intel_idle) doesn't provide a sufficient barrier to ensure that all core
are indeed awake (out of Cstate) and that the package is awake. To do so,
we need to supplement the pm_qos with a manual ping on_each_cpu.
v2: Restrict the heavy-weight wakeup to just the ISOF_PORT_PUNIT, there
is insufficient evidence to implicate a wider problem atm. Similarly,
restrict the w/a to Valleyview, as Cherryview doesn't have an angry cadre
of users.
The working theory, courtesy of Ville and Hans, is the issue lies within
the power delivery and so is likely to be unit and board specific and
occurs when both the unit/fw require extra power at the same time as the
cpu package is changing its own power state.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=109051
References: https://bugs.freedesktop.org/show_bug.cgi?id=102657
References: https://bugzilla.kernel.org/show_bug.cgi?id=195255
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
drivers/gpu/drm/i915/i915_drv.c | 6 +++
drivers/gpu/drm/i915/i915_drv.h | 1 +
drivers/gpu/drm/i915/intel_sideband.c | 89 +++++++++++++++++++++++++++--------
3 files changed, 77 insertions(+), 19 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index d61b51c0bf0b..bfb9d7b6b678 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -913,6 +913,9 @@ static int i915_driver_init_early(struct drm_i915_private *dev_priv,
spin_lock_init(&dev_priv->uncore.lock);
mutex_init(&dev_priv->sb_lock);
+ pm_qos_add_request(&dev_priv->sb_qos,
+ PM_QOS_CPU_DMA_LATENCY, PM_QOS_DEFAULT_VALUE);
+
mutex_init(&dev_priv->modeset_restore_lock);
mutex_init(&dev_priv->av_mutex);
mutex_init(&dev_priv->wm.wm_mutex);
@@ -964,6 +967,9 @@ static void i915_driver_cleanup_early(struct drm_i915_private *dev_priv)
intel_irq_fini(dev_priv);
i915_workqueues_cleanup(dev_priv);
i915_engines_cleanup(dev_priv);
+
+ pm_qos_remove_request(&dev_priv->sb_qos);
+ mutex_destroy(&dev_priv->sb_lock);
}
static int i915_mmio_setup(struct drm_i915_private *dev_priv)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 604389d0b6a3..b8da17304ebe 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1907,6 +1907,7 @@ struct drm_i915_private {
/* Sideband mailbox protection */
struct mutex sb_lock;
+ struct pm_qos_request sb_qos;
/** Cached value of IMR to avoid reads in updating the bitfield */
union {
diff --git a/drivers/gpu/drm/i915/intel_sideband.c b/drivers/gpu/drm/i915/intel_sideband.c
index 75c872bb8cc9..d56eda33734e 100644
--- a/drivers/gpu/drm/i915/intel_sideband.c
+++ b/drivers/gpu/drm/i915/intel_sideband.c
@@ -22,6 +22,8 @@
*
*/
+#include <asm/iosf_mbi.h>
+
#include "i915_drv.h"
#include "intel_drv.h"
@@ -39,18 +41,48 @@
/* Private register write, double-word addressing, non-posted */
#define SB_CRWRDA_NP 0x07
-static int vlv_sideband_rw(struct drm_i915_private *dev_priv, u32 devfn,
- u32 port, u32 opcode, u32 addr, u32 *val)
+static void ping(void *info)
{
- u32 cmd, be = 0xf, bar = 0;
- bool is_read = (opcode == SB_MRD_NP || opcode == SB_CRRDDA_NP);
+}
- cmd = (devfn << IOSF_DEVFN_SHIFT) | (opcode << IOSF_OPCODE_SHIFT) |
- (port << IOSF_PORT_SHIFT) | (be << IOSF_BYTE_ENABLES_SHIFT) |
- (bar << IOSF_BAR_SHIFT);
+static void __vlv_punit_get(struct drm_i915_private *dev_priv)
+{
+ iosf_mbi_punit_acquire();
- WARN_ON(!mutex_is_locked(&dev_priv->sb_lock));
+ /*
+ * Prevent the cpu from sleeping while we use this sideband, otherwise
+ * the punit may cause a machine hang. The issue appears to be isolated
+ * with changing the power state of the CPU package while changing
+ * the power state via the punit, and we have only observed it
+ * reliably on 4-core Baytail systems suggesting the issue is in the
+ * power delivery mechanism and likely to be be board/function
+ * specific. Hence we presume the workaround needs only be applied
+ * to the Valleyview P-unit and not all sideband communications.
+ */
+ if (IS_VALLEYVIEW(dev_priv)) {
+ pm_qos_update_request(&dev_priv->sb_qos, 0);
+ on_each_cpu(ping, NULL, 1);
+ }
+}
+
+static void __vlv_punit_put(struct drm_i915_private *dev_priv)
+{
+ if (IS_VALLEYVIEW(dev_priv))
+ pm_qos_update_request(&dev_priv->sb_qos, PM_QOS_DEFAULT_VALUE);
+ iosf_mbi_punit_release();
+}
+
+static int vlv_sideband_rw(struct drm_i915_private *dev_priv,
+ u32 devfn, u32 port, u32 opcode,
+ u32 addr, u32 *val)
+{
+ const bool is_read = (opcode == SB_MRD_NP || opcode == SB_CRRDDA_NP);
+ int err;
+
+ lockdep_assert_held(&dev_priv->sb_lock);
+
+ /* Flush the previous comms, just in case it failed last time. */
if (intel_wait_for_register(dev_priv,
VLV_IOSF_DOORBELL_REQ, IOSF_SB_BUSY, 0,
5)) {
@@ -59,22 +91,33 @@ static int vlv_sideband_rw(struct drm_i915_private *dev_priv, u32 devfn,
return -EAGAIN;
}
- I915_WRITE(VLV_IOSF_ADDR, addr);
- I915_WRITE(VLV_IOSF_DATA, is_read ? 0 : *val);
- I915_WRITE(VLV_IOSF_DOORBELL_REQ, cmd);
-
- if (intel_wait_for_register(dev_priv,
- VLV_IOSF_DOORBELL_REQ, IOSF_SB_BUSY, 0,
- 5)) {
+ preempt_disable();
+
+ I915_WRITE_FW(VLV_IOSF_ADDR, addr);
+ I915_WRITE_FW(VLV_IOSF_DATA, is_read ? 0 : *val);
+ I915_WRITE_FW(VLV_IOSF_DOORBELL_REQ,
+ (devfn << IOSF_DEVFN_SHIFT) |
+ (opcode << IOSF_OPCODE_SHIFT) |
+ (port << IOSF_PORT_SHIFT) |
+ (0xf << IOSF_BYTE_ENABLES_SHIFT) |
+ (0 << IOSF_BAR_SHIFT) |
+ IOSF_SB_BUSY);
+
+ if (__intel_wait_for_register_fw(dev_priv,
+ VLV_IOSF_DOORBELL_REQ, IOSF_SB_BUSY, 0,
+ 10000, 0, NULL) == 0) {
+ if (is_read)
+ *val = I915_READ_FW(VLV_IOSF_DATA);
+ err = 0;
+ } else {
DRM_DEBUG_DRIVER("IOSF sideband finish wait (%s) timed out\n",
is_read ? "read" : "write");
- return -ETIMEDOUT;
+ err = -ETIMEDOUT;
}
- if (is_read)
- *val = I915_READ(VLV_IOSF_DATA);
+ preempt_enable();
- return 0;
+ return err;
}
u32 vlv_punit_read(struct drm_i915_private *dev_priv, u32 addr)
@@ -84,8 +127,12 @@ u32 vlv_punit_read(struct drm_i915_private *dev_priv, u32 addr)
WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
mutex_lock(&dev_priv->sb_lock);
+ __vlv_punit_get(dev_priv);
+
vlv_sideband_rw(dev_priv, PCI_DEVFN(0, 0), IOSF_PORT_PUNIT,
SB_CRRDDA_NP, addr, &val);
+
+ __vlv_punit_put(dev_priv);
mutex_unlock(&dev_priv->sb_lock);
return val;
@@ -98,8 +145,12 @@ int vlv_punit_write(struct drm_i915_private *dev_priv, u32 addr, u32 val)
WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
mutex_lock(&dev_priv->sb_lock);
+ __vlv_punit_get(dev_priv);
+
err = vlv_sideband_rw(dev_priv, PCI_DEVFN(0, 0), IOSF_PORT_PUNIT,
SB_CRWRDA_NP, addr, &val);
+
+ __vlv_punit_put(dev_priv);
mutex_unlock(&dev_priv->sb_lock);
return err;
--
2.16.2
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH 02/10] drm/i915: Lift acquiring the vlv punit magic to a common sb-get
2018-03-07 19:41 vlv punit and sideband tidy Chris Wilson
2018-03-07 19:41 ` [PATCH 01/10] drm/i915: Disable preemption and sleeping while using the punit sideband Chris Wilson
@ 2018-03-07 19:41 ` Chris Wilson
2018-03-07 19:41 ` [PATCH 03/10] drm/i915: Lift sideband locking for vlv_punit_(read|write) Chris Wilson
` (12 subsequent siblings)
14 siblings, 0 replies; 19+ messages in thread
From: Chris Wilson @ 2018-03-07 19:41 UTC (permalink / raw)
To: intel-gfx
As we now employ a very heavy pm_qos around the punit access, we want to
minimise the number of synchronous requests by performing one for the
whole punit sequence rather than around individual accesses. The
sideband lock is used for this, so push the pm_qos into the sideband
lock acquisition and release, moving it from the lowlevel punit rw
routine to the callers. In the first step, we move the punit magic into
the common sideband lock so that we can acquire a bunch of ports
simultaneously, and if need be extend the workaround protection later.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_drv.h | 44 ++++++++++--
drivers/gpu/drm/i915/intel_cdclk.c | 6 +-
drivers/gpu/drm/i915/intel_display.c | 37 +++++-----
drivers/gpu/drm/i915/intel_dp.c | 4 +-
drivers/gpu/drm/i915/intel_dpio_phy.c | 37 +++++-----
drivers/gpu/drm/i915/intel_dsi.c | 8 +--
drivers/gpu/drm/i915/intel_dsi_pll.c | 14 ++--
drivers/gpu/drm/i915/intel_dsi_vbt.c | 8 +--
drivers/gpu/drm/i915/intel_hdmi.c | 4 +-
drivers/gpu/drm/i915/intel_pm.c | 4 +-
drivers/gpu/drm/i915/intel_runtime_pm.c | 8 +--
drivers/gpu/drm/i915/intel_sideband.c | 115 +++++++++++++++++++++++++++-----
12 files changed, 207 insertions(+), 82 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index b8da17304ebe..afc89a8f43e8 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3773,25 +3773,61 @@ int skl_pcode_request(struct drm_i915_private *dev_priv, u32 mbox, u32 request,
u32 reply_mask, u32 reply, int timeout_base_ms);
/* intel_sideband.c */
+
+enum {
+ VLV_IOSF_SB_BUNIT,
+ VLV_IOSF_SB_CCK,
+ VLV_IOSF_SB_CCU,
+ VLV_IOSF_SB_DPIO,
+ VLV_IOSF_SB_FLISDSI,
+ VLV_IOSF_SB_GPIO,
+ VLV_IOSF_SB_NC,
+ VLV_IOSF_SB_PUNIT,
+};
+
+void vlv_iosf_sb_get(struct drm_i915_private *dev_priv, unsigned long ports);
+u32 vlv_iosf_sb_read(struct drm_i915_private *dev_priv, u8 port, u32 reg);
+void vlv_iosf_sb_write(struct drm_i915_private *dev_priv, u8 port, u32 reg, u32 val);
+void vlv_iosf_sb_put(struct drm_i915_private *dev_priv, unsigned long ports);
+
+void vlv_punit_get(struct drm_i915_private *dev_priv);
u32 vlv_punit_read(struct drm_i915_private *dev_priv, u32 addr);
int vlv_punit_write(struct drm_i915_private *dev_priv, u32 addr, u32 val);
+void vlv_punit_put(struct drm_i915_private *dev_priv);
+
+void vlv_nc_get(struct drm_i915_private *dev_priv);
u32 vlv_nc_read(struct drm_i915_private *dev_priv, u8 addr);
-u32 vlv_iosf_sb_read(struct drm_i915_private *dev_priv, u8 port, u32 reg);
-void vlv_iosf_sb_write(struct drm_i915_private *dev_priv, u8 port, u32 reg, u32 val);
+void vlv_nc_put(struct drm_i915_private *dev_priv);
+
+void vlv_cck_get(struct drm_i915_private *dev_priv);
u32 vlv_cck_read(struct drm_i915_private *dev_priv, u32 reg);
void vlv_cck_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
+void vlv_cck_put(struct drm_i915_private *dev_priv);
+
+void vlv_ccu_get(struct drm_i915_private *dev_priv);
u32 vlv_ccu_read(struct drm_i915_private *dev_priv, u32 reg);
void vlv_ccu_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
+void vlv_ccu_put(struct drm_i915_private *dev_priv);
+
+void vlv_bunit_get(struct drm_i915_private *dev_priv);
u32 vlv_bunit_read(struct drm_i915_private *dev_priv, u32 reg);
void vlv_bunit_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
+void vlv_bunit_put(struct drm_i915_private *dev_priv);
+
+void vlv_dpio_get(struct drm_i915_private *dev_priv);
u32 vlv_dpio_read(struct drm_i915_private *dev_priv, enum pipe pipe, int reg);
void vlv_dpio_write(struct drm_i915_private *dev_priv, enum pipe pipe, int reg, u32 val);
+void vlv_dpio_put(struct drm_i915_private *dev_priv);
+
+void vlv_flisdsi_get(struct drm_i915_private *dev_priv);
+u32 vlv_flisdsi_read(struct drm_i915_private *dev_priv, u32 reg);
+void vlv_flisdsi_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
+void vlv_flisdsi_put(struct drm_i915_private *dev_priv);
+
u32 intel_sbi_read(struct drm_i915_private *dev_priv, u16 reg,
enum intel_sbi_destination destination);
void intel_sbi_write(struct drm_i915_private *dev_priv, u16 reg, u32 value,
enum intel_sbi_destination destination);
-u32 vlv_flisdsi_read(struct drm_i915_private *dev_priv, u32 reg);
-void vlv_flisdsi_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
/* intel_dpio_phy.c */
void bxt_port_to_phy_channel(struct drm_i915_private *dev_priv, enum port port,
diff --git a/drivers/gpu/drm/i915/intel_cdclk.c b/drivers/gpu/drm/i915/intel_cdclk.c
index dc7db8a2caf8..411009ff85aa 100644
--- a/drivers/gpu/drm/i915/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/intel_cdclk.c
@@ -552,7 +552,8 @@ static void vlv_set_cdclk(struct drm_i915_private *dev_priv,
}
mutex_unlock(&dev_priv->pcu_lock);
- mutex_lock(&dev_priv->sb_lock);
+ vlv_iosf_sb_get(dev_priv,
+ BIT(VLV_IOSF_SB_CCK) | BIT(VLV_IOSF_SB_BUNIT));
if (cdclk == 400000) {
u32 divider;
@@ -586,7 +587,8 @@ static void vlv_set_cdclk(struct drm_i915_private *dev_priv,
val |= 3000 / 250; /* 3.0 usec */
vlv_bunit_write(dev_priv, BUNIT_REG_BISOC, val);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_iosf_sb_put(dev_priv,
+ BIT(VLV_IOSF_SB_CCK) | BIT(VLV_IOSF_SB_BUNIT));
intel_update_cdclk(dev_priv);
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 331084082545..177ee45e0669 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -165,10 +165,10 @@ int vlv_get_hpll_vco(struct drm_i915_private *dev_priv)
int hpll_freq, vco_freq[] = { 800, 1600, 2000, 2400 };
/* Obtain SKU information */
- mutex_lock(&dev_priv->sb_lock);
+ vlv_cck_get(dev_priv);
hpll_freq = vlv_cck_read(dev_priv, CCK_FUSE_REG) &
CCK_FUSE_HPLL_FREQ_MASK;
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_cck_put(dev_priv);
return vco_freq[hpll_freq] * 1000;
}
@@ -179,9 +179,9 @@ int vlv_get_cck_clock(struct drm_i915_private *dev_priv,
u32 val;
int divider;
- mutex_lock(&dev_priv->sb_lock);
+ vlv_cck_get(dev_priv);
val = vlv_cck_read(dev_priv, reg);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_cck_put(dev_priv);
divider = val & CCK_FREQUENCY_VALUES;
@@ -1078,9 +1078,9 @@ void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state)
u32 val;
bool cur_state;
- mutex_lock(&dev_priv->sb_lock);
+ vlv_cck_get(dev_priv);
val = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_cck_put(dev_priv);
cur_state = val & DSI_PLL_VCO_EN;
I915_STATE_WARN(cur_state != state,
@@ -1428,14 +1428,14 @@ static void _chv_enable_pll(struct intel_crtc *crtc,
enum dpio_channel port = vlv_pipe_to_channel(pipe);
u32 tmp;
- mutex_lock(&dev_priv->sb_lock);
+ vlv_dpio_get(dev_priv);
/* Enable back the 10bit clock to display controller */
tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
tmp |= DPIO_DCLKP_EN;
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), tmp);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_dpio_put(dev_priv);
/*
* Need to wait > 100ns between dclkp clock enable bit and PLL enable.
@@ -1620,14 +1620,14 @@ static void chv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
I915_WRITE(DPLL(pipe), val);
POSTING_READ(DPLL(pipe));
- mutex_lock(&dev_priv->sb_lock);
+ vlv_dpio_get(dev_priv);
/* Disable 10bit clock to display controller */
val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
val &= ~DPIO_DCLKP_EN;
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), val);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_dpio_put(dev_priv);
}
void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
@@ -6743,7 +6743,7 @@ static void vlv_prepare_pll(struct intel_crtc *crtc,
if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
return;
- mutex_lock(&dev_priv->sb_lock);
+ vlv_dpio_get(dev_priv);
bestn = pipe_config->dpll.n;
bestm1 = pipe_config->dpll.m1;
@@ -6820,7 +6820,8 @@ static void vlv_prepare_pll(struct intel_crtc *crtc,
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW7(pipe), coreclk);
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW11(pipe), 0x87871000);
- mutex_unlock(&dev_priv->sb_lock);
+
+ vlv_dpio_put(dev_priv);
}
static void chv_prepare_pll(struct intel_crtc *crtc,
@@ -6853,7 +6854,7 @@ static void chv_prepare_pll(struct intel_crtc *crtc,
dpio_val = 0;
loopfilter = 0;
- mutex_lock(&dev_priv->sb_lock);
+ vlv_dpio_get(dev_priv);
/* p1 and p2 divider */
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW13(port),
@@ -6925,7 +6926,7 @@ static void chv_prepare_pll(struct intel_crtc *crtc,
vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port)) |
DPIO_AFC_RECAL);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_dpio_put(dev_priv);
}
/**
@@ -7527,9 +7528,9 @@ static void vlv_crtc_clock_get(struct intel_crtc *crtc,
if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
return;
- mutex_lock(&dev_priv->sb_lock);
+ vlv_dpio_get(dev_priv);
mdiv = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW3(pipe));
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_dpio_put(dev_priv);
clock.m1 = (mdiv >> DPIO_M1DIV_SHIFT) & 7;
clock.m2 = mdiv & DPIO_M2DIV_MASK;
@@ -7629,13 +7630,13 @@ static void chv_crtc_clock_get(struct intel_crtc *crtc,
if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
return;
- mutex_lock(&dev_priv->sb_lock);
+ vlv_dpio_get(dev_priv);
cmn_dw13 = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW13(port));
pll_dw0 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW0(port));
pll_dw1 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW1(port));
pll_dw2 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW2(port));
pll_dw3 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_dpio_put(dev_priv);
clock.m1 = (pll_dw1 & 0x7) == DPIO_CHV_M1_DIV_BY_2 ? 2 : 0;
clock.m2 = (pll_dw0 & 0xff) << 22;
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 9a4a51e79fa1..11b28fca01ac 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -2833,12 +2833,12 @@ static void chv_post_disable_dp(struct intel_encoder *encoder,
intel_dp_link_down(encoder, old_crtc_state);
- mutex_lock(&dev_priv->sb_lock);
+ vlv_dpio_get(dev_priv);
/* Assert data lane reset */
chv_data_lane_soft_reset(encoder, old_crtc_state, true);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_dpio_put(dev_priv);
}
static void
diff --git a/drivers/gpu/drm/i915/intel_dpio_phy.c b/drivers/gpu/drm/i915/intel_dpio_phy.c
index c8e9e44e5981..239434c225b1 100644
--- a/drivers/gpu/drm/i915/intel_dpio_phy.c
+++ b/drivers/gpu/drm/i915/intel_dpio_phy.c
@@ -645,7 +645,7 @@ void chv_set_phy_signal_level(struct intel_encoder *encoder,
u32 val;
int i;
- mutex_lock(&dev_priv->sb_lock);
+ vlv_dpio_get(dev_priv);
/* Clear calc init */
val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW10(ch));
@@ -726,8 +726,7 @@ void chv_set_phy_signal_level(struct intel_encoder *encoder,
vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW10(ch), val);
}
- mutex_unlock(&dev_priv->sb_lock);
-
+ vlv_dpio_put(dev_priv);
}
void chv_data_lane_soft_reset(struct intel_encoder *encoder,
@@ -797,7 +796,7 @@ void chv_phy_pre_pll_enable(struct intel_encoder *encoder,
chv_phy_powergate_lanes(encoder, true, lane_mask);
- mutex_lock(&dev_priv->sb_lock);
+ vlv_dpio_get(dev_priv);
/* Assert data lane reset */
chv_data_lane_soft_reset(encoder, crtc_state, true);
@@ -852,7 +851,7 @@ void chv_phy_pre_pll_enable(struct intel_encoder *encoder,
val |= CHV_CMN_USEDCLKCHANNEL;
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW19(ch), val);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_dpio_put(dev_priv);
}
void chv_phy_pre_encoder_enable(struct intel_encoder *encoder,
@@ -867,7 +866,7 @@ void chv_phy_pre_encoder_enable(struct intel_encoder *encoder,
int data, i, stagger;
u32 val;
- mutex_lock(&dev_priv->sb_lock);
+ vlv_dpio_get(dev_priv);
/* allow hardware to manage TX FIFO reset source */
val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW11(ch));
@@ -932,7 +931,7 @@ void chv_phy_pre_encoder_enable(struct intel_encoder *encoder,
/* Deassert data lane reset */
chv_data_lane_soft_reset(encoder, crtc_state, false);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_dpio_put(dev_priv);
}
void chv_phy_release_cl2_override(struct intel_encoder *encoder)
@@ -953,7 +952,7 @@ void chv_phy_post_pll_disable(struct intel_encoder *encoder,
enum pipe pipe = to_intel_crtc(old_crtc_state->base.crtc)->pipe;
u32 val;
- mutex_lock(&dev_priv->sb_lock);
+ vlv_dpio_get(dev_priv);
/* disable left/right clock distribution */
if (pipe != PIPE_B) {
@@ -966,7 +965,7 @@ void chv_phy_post_pll_disable(struct intel_encoder *encoder,
vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val);
}
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_dpio_put(dev_priv);
/*
* Leave the power down bit cleared for at least one
@@ -990,7 +989,8 @@ void vlv_set_phy_signal_level(struct intel_encoder *encoder,
enum dpio_channel port = vlv_dport_to_channel(dport);
enum pipe pipe = intel_crtc->pipe;
- mutex_lock(&dev_priv->sb_lock);
+ vlv_dpio_get(dev_priv);
+
vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), 0x00000000);
vlv_dpio_write(dev_priv, pipe, VLV_TX_DW4(port), demph_reg_value);
vlv_dpio_write(dev_priv, pipe, VLV_TX_DW2(port),
@@ -1003,7 +1003,8 @@ void vlv_set_phy_signal_level(struct intel_encoder *encoder,
vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW11(port), 0x00030000);
vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW9(port), preemph_reg_value);
vlv_dpio_write(dev_priv, pipe, VLV_TX_DW5(port), DPIO_TX_OCALINIT_EN);
- mutex_unlock(&dev_priv->sb_lock);
+
+ vlv_dpio_put(dev_priv);
}
void vlv_phy_pre_pll_enable(struct intel_encoder *encoder,
@@ -1016,7 +1017,8 @@ void vlv_phy_pre_pll_enable(struct intel_encoder *encoder,
enum pipe pipe = crtc->pipe;
/* Program Tx lane resets to default */
- mutex_lock(&dev_priv->sb_lock);
+ vlv_dpio_get(dev_priv);
+
vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port),
DPIO_PCS_TX_LANE2_RESET |
DPIO_PCS_TX_LANE1_RESET);
@@ -1030,7 +1032,8 @@ void vlv_phy_pre_pll_enable(struct intel_encoder *encoder,
vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW12(port), 0x00750f00);
vlv_dpio_write(dev_priv, pipe, VLV_TX_DW11(port), 0x00001500);
vlv_dpio_write(dev_priv, pipe, VLV_TX_DW14(port), 0x40400000);
- mutex_unlock(&dev_priv->sb_lock);
+
+ vlv_dpio_put(dev_priv);
}
void vlv_phy_pre_encoder_enable(struct intel_encoder *encoder,
@@ -1044,7 +1047,7 @@ void vlv_phy_pre_encoder_enable(struct intel_encoder *encoder,
enum pipe pipe = crtc->pipe;
u32 val;
- mutex_lock(&dev_priv->sb_lock);
+ vlv_dpio_get(dev_priv);
/* Enable clock channels for this port */
val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW8(port));
@@ -1060,7 +1063,7 @@ void vlv_phy_pre_encoder_enable(struct intel_encoder *encoder,
vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW14(port), 0x00760018);
vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW23(port), 0x00400888);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_dpio_put(dev_priv);
}
void vlv_phy_reset_lanes(struct intel_encoder *encoder,
@@ -1072,8 +1075,8 @@ void vlv_phy_reset_lanes(struct intel_encoder *encoder,
enum dpio_channel port = vlv_dport_to_channel(dport);
enum pipe pipe = crtc->pipe;
- mutex_lock(&dev_priv->sb_lock);
+ vlv_dpio_get(dev_priv);
vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(port), 0x00000000);
vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(port), 0x00e00060);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_dpio_put(dev_priv);
}
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 51a1d6868b1e..355aa8717af2 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -278,7 +278,7 @@ static int dpi_send_cmd(struct intel_dsi *intel_dsi, u32 cmd, bool hs,
static void band_gap_reset(struct drm_i915_private *dev_priv)
{
- mutex_lock(&dev_priv->sb_lock);
+ vlv_flisdsi_get(dev_priv);
vlv_flisdsi_write(dev_priv, 0x08, 0x0001);
vlv_flisdsi_write(dev_priv, 0x0F, 0x0005);
@@ -287,7 +287,7 @@ static void band_gap_reset(struct drm_i915_private *dev_priv)
vlv_flisdsi_write(dev_priv, 0x0F, 0x0000);
vlv_flisdsi_write(dev_priv, 0x08, 0x0000);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_flisdsi_put(dev_priv);
}
static inline bool is_vid_mode(struct intel_dsi *intel_dsi)
@@ -509,11 +509,11 @@ static void vlv_dsi_device_ready(struct intel_encoder *encoder)
DRM_DEBUG_KMS("\n");
- mutex_lock(&dev_priv->sb_lock);
+ vlv_flisdsi_get(dev_priv);
/* program rcomp for compliance, reduce from 50 ohms to 45 ohms
* needed everytime after power gate */
vlv_flisdsi_write(dev_priv, 0x04, 0x0004);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_flisdsi_put(dev_priv);
/* bandgap reset is needed after everytime we do power gate */
band_gap_reset(dev_priv);
diff --git a/drivers/gpu/drm/i915/intel_dsi_pll.c b/drivers/gpu/drm/i915/intel_dsi_pll.c
index 2ff2ee7f3b78..b73336e7dcd2 100644
--- a/drivers/gpu/drm/i915/intel_dsi_pll.c
+++ b/drivers/gpu/drm/i915/intel_dsi_pll.c
@@ -149,7 +149,7 @@ static void vlv_enable_dsi_pll(struct intel_encoder *encoder,
DRM_DEBUG_KMS("\n");
- mutex_lock(&dev_priv->sb_lock);
+ vlv_cck_get(dev_priv);
vlv_cck_write(dev_priv, CCK_REG_DSI_PLL_CONTROL, 0);
vlv_cck_write(dev_priv, CCK_REG_DSI_PLL_DIVIDER, config->dsi_pll.div);
@@ -166,11 +166,11 @@ static void vlv_enable_dsi_pll(struct intel_encoder *encoder,
if (wait_for(vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL) &
DSI_PLL_LOCK, 20)) {
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_cck_put(dev_priv);
DRM_ERROR("DSI PLL lock failed\n");
return;
}
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_cck_put(dev_priv);
DRM_DEBUG_KMS("DSI PLL locked\n");
}
@@ -182,14 +182,14 @@ static void vlv_disable_dsi_pll(struct intel_encoder *encoder)
DRM_DEBUG_KMS("\n");
- mutex_lock(&dev_priv->sb_lock);
+ vlv_cck_get(dev_priv);
tmp = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
tmp &= ~DSI_PLL_VCO_EN;
tmp |= DSI_PLL_LDO_GATE;
vlv_cck_write(dev_priv, CCK_REG_DSI_PLL_CONTROL, tmp);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_cck_put(dev_priv);
}
static bool bxt_dsi_pll_is_enabled(struct drm_i915_private *dev_priv)
@@ -274,10 +274,10 @@ static u32 vlv_dsi_get_pclk(struct intel_encoder *encoder, int pipe_bpp,
DRM_DEBUG_KMS("\n");
- mutex_lock(&dev_priv->sb_lock);
+ vlv_cck_get(dev_priv);
pll_ctl = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
pll_div = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_DIVIDER);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_cck_put(dev_priv);
config->dsi_pll.ctrl = pll_ctl & ~DSI_PLL_LOCK;
config->dsi_pll.div = pll_div;
diff --git a/drivers/gpu/drm/i915/intel_dsi_vbt.c b/drivers/gpu/drm/i915/intel_dsi_vbt.c
index 91c07b0c8db9..f1168b6e8592 100644
--- a/drivers/gpu/drm/i915/intel_dsi_vbt.c
+++ b/drivers/gpu/drm/i915/intel_dsi_vbt.c
@@ -234,7 +234,7 @@ static void vlv_exec_gpio(struct drm_i915_private *dev_priv,
pconf0 = VLV_GPIO_PCONF0(map->base_offset);
padval = VLV_GPIO_PAD_VAL(map->base_offset);
- mutex_lock(&dev_priv->sb_lock);
+ vlv_iosf_sb_get(dev_priv, BIT(VLV_IOSF_SB_GPIO));
if (!map->init) {
/* FIXME: remove constant below */
vlv_iosf_sb_write(dev_priv, port, pconf0, 0x2000CC00);
@@ -243,7 +243,7 @@ static void vlv_exec_gpio(struct drm_i915_private *dev_priv,
tmp = 0x4 | value;
vlv_iosf_sb_write(dev_priv, port, padval, tmp);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_iosf_sb_put(dev_priv, BIT(VLV_IOSF_SB_GPIO));
}
static void chv_exec_gpio(struct drm_i915_private *dev_priv,
@@ -289,12 +289,12 @@ static void chv_exec_gpio(struct drm_i915_private *dev_priv,
cfg0 = CHV_GPIO_PAD_CFG0(family_num, gpio_index);
cfg1 = CHV_GPIO_PAD_CFG1(family_num, gpio_index);
- mutex_lock(&dev_priv->sb_lock);
+ vlv_iosf_sb_get(dev_priv, BIT(VLV_IOSF_SB_GPIO));
vlv_iosf_sb_write(dev_priv, port, cfg1, 0);
vlv_iosf_sb_write(dev_priv, port, cfg0,
CHV_GPIO_GPIOEN | CHV_GPIO_GPIOCFG_GPO |
CHV_GPIO_GPIOTXSTATE(value));
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_iosf_sb_put(dev_priv, BIT(VLV_IOSF_SB_GPIO));
}
static void bxt_exec_gpio(struct drm_i915_private *dev_priv,
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 1baef4ac7ecb..8c419f22fb69 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -1995,12 +1995,12 @@ static void chv_hdmi_post_disable(struct intel_encoder *encoder,
struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
- mutex_lock(&dev_priv->sb_lock);
+ vlv_dpio_get(dev_priv);
/* Assert data lane reset */
chv_data_lane_soft_reset(encoder, old_crtc_state, true);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_dpio_put(dev_priv);
}
static void chv_hdmi_pre_enable(struct intel_encoder *encoder,
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 6cab20ce167a..99cf88dba92b 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -7242,9 +7242,9 @@ static void cherryview_init_gt_powersave(struct drm_i915_private *dev_priv)
vlv_init_gpll_ref_freq(dev_priv);
- mutex_lock(&dev_priv->sb_lock);
+ vlv_cck_get(dev_priv);
val = vlv_cck_read(dev_priv, CCK_FUSE_REG);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_cck_put(dev_priv);
switch ((val >> 2) & 0x7) {
case 3:
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 53ea564f971e..7548f16ea722 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -1199,7 +1199,7 @@ static void chv_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv,
1))
DRM_ERROR("Display PHY %d is not power up\n", phy);
- mutex_lock(&dev_priv->sb_lock);
+ vlv_dpio_get(dev_priv);
/* Enable dynamic power down */
tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW28);
@@ -1222,7 +1222,7 @@ static void chv_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv,
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, tmp);
}
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_dpio_put(dev_priv);
dev_priv->chv_phy_control |= PHY_COM_LANE_RESET_DEASSERT(phy);
I915_WRITE(DISPLAY_PHY_CONTROL, dev_priv->chv_phy_control);
@@ -1285,9 +1285,9 @@ static void assert_chv_phy_powergate(struct drm_i915_private *dev_priv, enum dpi
else
reg = _CHV_CMN_DW6_CH1;
- mutex_lock(&dev_priv->sb_lock);
+ vlv_dpio_get(dev_priv);
val = vlv_dpio_read(dev_priv, pipe, reg);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_dpio_put(dev_priv);
/*
* This assumes !override is only used when the port is disabled.
diff --git a/drivers/gpu/drm/i915/intel_sideband.c b/drivers/gpu/drm/i915/intel_sideband.c
index d56eda33734e..3d7c5917b97c 100644
--- a/drivers/gpu/drm/i915/intel_sideband.c
+++ b/drivers/gpu/drm/i915/intel_sideband.c
@@ -73,6 +73,22 @@ static void __vlv_punit_put(struct drm_i915_private *dev_priv)
iosf_mbi_punit_release();
}
+void vlv_iosf_sb_get(struct drm_i915_private *dev_priv, unsigned long ports)
+{
+ if (ports & BIT(VLV_IOSF_SB_PUNIT))
+ __vlv_punit_get(dev_priv);
+
+ mutex_lock(&dev_priv->sb_lock);
+}
+
+void vlv_iosf_sb_put(struct drm_i915_private *dev_priv, unsigned long ports)
+{
+ mutex_unlock(&dev_priv->sb_lock);
+
+ if (ports & BIT(VLV_IOSF_SB_PUNIT))
+ __vlv_punit_put(dev_priv);
+}
+
static int vlv_sideband_rw(struct drm_i915_private *dev_priv,
u32 devfn, u32 port, u32 opcode,
u32 addr, u32 *val)
@@ -81,6 +97,8 @@ static int vlv_sideband_rw(struct drm_i915_private *dev_priv,
int err;
lockdep_assert_held(&dev_priv->sb_lock);
+ if (port == IOSF_PORT_PUNIT)
+ iosf_mbi_assert_punit_acquired();
/* Flush the previous comms, just in case it failed last time. */
if (intel_wait_for_register(dev_priv,
@@ -124,16 +142,14 @@ u32 vlv_punit_read(struct drm_i915_private *dev_priv, u32 addr)
{
u32 val = 0;
- WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
+ lockdep_assert_held(&dev_priv->pcu_lock);
- mutex_lock(&dev_priv->sb_lock);
- __vlv_punit_get(dev_priv);
+ vlv_punit_get(dev_priv);
vlv_sideband_rw(dev_priv, PCI_DEVFN(0, 0), IOSF_PORT_PUNIT,
SB_CRRDDA_NP, addr, &val);
- __vlv_punit_put(dev_priv);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_punit_put(dev_priv);
return val;
}
@@ -142,20 +158,28 @@ int vlv_punit_write(struct drm_i915_private *dev_priv, u32 addr, u32 val)
{
int err;
- WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
+ lockdep_assert_held(&dev_priv->pcu_lock);
- mutex_lock(&dev_priv->sb_lock);
- __vlv_punit_get(dev_priv);
+ vlv_punit_get(dev_priv);
err = vlv_sideband_rw(dev_priv, PCI_DEVFN(0, 0), IOSF_PORT_PUNIT,
SB_CRWRDA_NP, addr, &val);
- __vlv_punit_put(dev_priv);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_punit_put(dev_priv);
return err;
}
+void vlv_punit_get(struct drm_i915_private *dev_priv)
+{
+ vlv_iosf_sb_get(dev_priv, BIT(VLV_IOSF_SB_PUNIT));
+}
+
+void vlv_punit_put(struct drm_i915_private *dev_priv)
+{
+ vlv_iosf_sb_put(dev_priv, BIT(VLV_IOSF_SB_PUNIT));
+}
+
u32 vlv_bunit_read(struct drm_i915_private *dev_priv, u32 reg)
{
u32 val = 0;
@@ -172,20 +196,38 @@ void vlv_bunit_write(struct drm_i915_private *dev_priv, u32 reg, u32 val)
SB_CRWRDA_NP, reg, &val);
}
+void vlv_bunit_get(struct drm_i915_private *dev_priv)
+{
+ vlv_iosf_sb_get(dev_priv, BIT(VLV_IOSF_SB_BUNIT));
+}
+
+void vlv_bunit_put(struct drm_i915_private *dev_priv)
+{
+ vlv_iosf_sb_put(dev_priv, BIT(VLV_IOSF_SB_BUNIT));
+}
+
u32 vlv_nc_read(struct drm_i915_private *dev_priv, u8 addr)
{
u32 val = 0;
- WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
-
- mutex_lock(&dev_priv->sb_lock);
+ vlv_nc_get(dev_priv);
vlv_sideband_rw(dev_priv, PCI_DEVFN(0, 0), IOSF_PORT_NC,
SB_CRRDDA_NP, addr, &val);
- mutex_unlock(&dev_priv->sb_lock);
+ vlv_nc_put(dev_priv);
return val;
}
+void vlv_nc_get(struct drm_i915_private *dev_priv)
+{
+ vlv_iosf_sb_get(dev_priv, BIT(VLV_IOSF_SB_NC));
+}
+
+void vlv_nc_put(struct drm_i915_private *dev_priv)
+{
+ vlv_iosf_sb_put(dev_priv, BIT(VLV_IOSF_SB_NC));
+}
+
u32 vlv_iosf_sb_read(struct drm_i915_private *dev_priv, u8 port, u32 reg)
{
u32 val = 0;
@@ -215,6 +257,16 @@ void vlv_cck_write(struct drm_i915_private *dev_priv, u32 reg, u32 val)
SB_CRWRDA_NP, reg, &val);
}
+void vlv_cck_get(struct drm_i915_private *dev_priv)
+{
+ vlv_iosf_sb_get(dev_priv, BIT(VLV_IOSF_SB_CCK));
+}
+
+void vlv_cck_put(struct drm_i915_private *dev_priv)
+{
+ vlv_iosf_sb_put(dev_priv, BIT(VLV_IOSF_SB_CCK));
+}
+
u32 vlv_ccu_read(struct drm_i915_private *dev_priv, u32 reg)
{
u32 val = 0;
@@ -229,6 +281,16 @@ void vlv_ccu_write(struct drm_i915_private *dev_priv, u32 reg, u32 val)
SB_CRWRDA_NP, reg, &val);
}
+void vlv_ccu_get(struct drm_i915_private *dev_priv)
+{
+ vlv_iosf_sb_get(dev_priv, BIT(VLV_IOSF_SB_CCU));
+}
+
+void vlv_ccu_put(struct drm_i915_private *dev_priv)
+{
+ vlv_iosf_sb_put(dev_priv, BIT(VLV_IOSF_SB_CCU));
+}
+
u32 vlv_dpio_read(struct drm_i915_private *dev_priv, enum pipe pipe, int reg)
{
u32 val = 0;
@@ -252,12 +314,23 @@ void vlv_dpio_write(struct drm_i915_private *dev_priv, enum pipe pipe, int reg,
SB_MWR_NP, reg, &val);
}
+void vlv_dpio_get(struct drm_i915_private *dev_priv)
+{
+ vlv_iosf_sb_get(dev_priv, BIT(VLV_IOSF_SB_DPIO));
+}
+
+void vlv_dpio_put(struct drm_i915_private *dev_priv)
+{
+ vlv_iosf_sb_put(dev_priv, BIT(VLV_IOSF_SB_DPIO));
+}
+
/* SBI access */
u32 intel_sbi_read(struct drm_i915_private *dev_priv, u16 reg,
enum intel_sbi_destination destination)
{
u32 value = 0;
- WARN_ON(!mutex_is_locked(&dev_priv->sb_lock));
+
+ lockdep_assert_held(&dev_priv->sb_lock);
if (intel_wait_for_register(dev_priv,
SBI_CTL_STAT, SBI_BUSY, 0,
@@ -297,7 +370,7 @@ void intel_sbi_write(struct drm_i915_private *dev_priv, u16 reg, u32 value,
{
u32 tmp;
- WARN_ON(!mutex_is_locked(&dev_priv->sb_lock));
+ lockdep_assert_held(&dev_priv->sb_lock);
if (intel_wait_for_register(dev_priv,
SBI_CTL_STAT, SBI_BUSY, 0,
@@ -344,3 +417,13 @@ void vlv_flisdsi_write(struct drm_i915_private *dev_priv, u32 reg, u32 val)
vlv_sideband_rw(dev_priv, DPIO_DEVFN, IOSF_PORT_FLISDSI, SB_CRWRDA_NP,
reg, &val);
}
+
+void vlv_flisdsi_get(struct drm_i915_private *dev_priv)
+{
+ vlv_iosf_sb_get(dev_priv, BIT(VLV_IOSF_SB_FLISDSI));
+}
+
+void vlv_flisdsi_put(struct drm_i915_private *dev_priv)
+{
+ vlv_iosf_sb_put(dev_priv, BIT(VLV_IOSF_SB_FLISDSI));
+}
--
2.16.2
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH 03/10] drm/i915: Lift sideband locking for vlv_punit_(read|write)
2018-03-07 19:41 vlv punit and sideband tidy Chris Wilson
2018-03-07 19:41 ` [PATCH 01/10] drm/i915: Disable preemption and sleeping while using the punit sideband Chris Wilson
2018-03-07 19:41 ` [PATCH 02/10] drm/i915: Lift acquiring the vlv punit magic to a common sb-get Chris Wilson
@ 2018-03-07 19:41 ` Chris Wilson
2018-03-07 19:41 ` [PATCH 04/10] drm/i915: Reduce RPS update frequency on Valleyview/Cherryview Chris Wilson
` (11 subsequent siblings)
14 siblings, 0 replies; 19+ messages in thread
From: Chris Wilson @ 2018-03-07 19:41 UTC (permalink / raw)
To: intel-gfx
Lift the sideband acquisition for vlv_punit_read and vlv_punit_write
into their callers, so that we can lock the sideband once for a sequence
of operations, rather than perform the heavyweight acquisition on each
request.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_debugfs.c | 3 +++
drivers/gpu/drm/i915/i915_sysfs.c | 14 +++++-----
drivers/gpu/drm/i915/intel_cdclk.c | 24 +++++++++++++----
drivers/gpu/drm/i915/intel_display.c | 16 +++++++-----
drivers/gpu/drm/i915/intel_pm.c | 46 +++++++++++++++++++++++++++------
drivers/gpu/drm/i915/intel_runtime_pm.c | 8 ++++++
drivers/gpu/drm/i915/intel_sideband.c | 18 ++-----------
7 files changed, 86 insertions(+), 43 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index e838c765b251..20a6c00a7365 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1085,7 +1085,10 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
yesno((rpmodectl & GEN6_RP_MEDIA_MODE_MASK) ==
GEN6_RP_MEDIA_SW_MODE));
+ vlv_punit_get(dev_priv);
freq_sts = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
+ vlv_punit_put(dev_priv);
+
seq_printf(m, "PUNIT_REG_GPU_FREQ_STS: 0x%08x\n", freq_sts);
seq_printf(m, "DDR freq: %d MHz\n", dev_priv->mem_freq);
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
index b33d2158c234..17b20a34e99f 100644
--- a/drivers/gpu/drm/i915/i915_sysfs.c
+++ b/drivers/gpu/drm/i915/i915_sysfs.c
@@ -258,25 +258,25 @@ static ssize_t gt_act_freq_mhz_show(struct device *kdev,
struct device_attribute *attr, char *buf)
{
struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev);
- int ret;
+ u32 freq;
intel_runtime_pm_get(dev_priv);
mutex_lock(&dev_priv->pcu_lock);
if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
- u32 freq;
+ vlv_punit_get(dev_priv);
freq = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
- ret = intel_gpu_freq(dev_priv, (freq >> 8) & 0xff);
+ vlv_punit_put(dev_priv);
+
+ freq = (freq >> 8) & 0xff;
} else {
- ret = intel_gpu_freq(dev_priv,
- intel_get_cagf(dev_priv,
- I915_READ(GEN6_RPSTAT1)));
+ freq = intel_get_cagf(dev_priv, I915_READ(GEN6_RPSTAT1));
}
mutex_unlock(&dev_priv->pcu_lock);
intel_runtime_pm_put(dev_priv);
- return snprintf(buf, PAGE_SIZE, "%d\n", ret);
+ return snprintf(buf, PAGE_SIZE, "%d\n", intel_gpu_freq(dev_priv, freq));
}
static ssize_t gt_cur_freq_mhz_show(struct device *kdev,
diff --git a/drivers/gpu/drm/i915/intel_cdclk.c b/drivers/gpu/drm/i915/intel_cdclk.c
index 411009ff85aa..e53e8c36a591 100644
--- a/drivers/gpu/drm/i915/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/intel_cdclk.c
@@ -461,13 +461,19 @@ static void vlv_get_cdclk(struct drm_i915_private *dev_priv,
{
u32 val;
+ mutex_lock(&dev_priv->pcu_lock);
+ vlv_iosf_sb_get(dev_priv,
+ BIT(VLV_IOSF_SB_CCK) | BIT(VLV_IOSF_SB_PUNIT));
+
cdclk_state->vco = vlv_get_hpll_vco(dev_priv);
cdclk_state->cdclk = vlv_get_cck_clock(dev_priv, "cdclk",
CCK_DISPLAY_CLOCK_CONTROL,
cdclk_state->vco);
- mutex_lock(&dev_priv->pcu_lock);
val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
+
+ vlv_iosf_sb_put(dev_priv,
+ BIT(VLV_IOSF_SB_CCK) | BIT(VLV_IOSF_SB_PUNIT));
mutex_unlock(&dev_priv->pcu_lock);
if (IS_VALLEYVIEW(dev_priv))
@@ -540,6 +546,11 @@ static void vlv_set_cdclk(struct drm_i915_private *dev_priv,
*/
intel_display_power_get(dev_priv, POWER_DOMAIN_PIPE_A);
+ vlv_iosf_sb_get(dev_priv,
+ BIT(VLV_IOSF_SB_CCK) |
+ BIT(VLV_IOSF_SB_BUNIT) |
+ BIT(VLV_IOSF_SB_PUNIT));
+
mutex_lock(&dev_priv->pcu_lock);
val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
val &= ~DSPFREQGUAR_MASK;
@@ -552,9 +563,6 @@ static void vlv_set_cdclk(struct drm_i915_private *dev_priv,
}
mutex_unlock(&dev_priv->pcu_lock);
- vlv_iosf_sb_get(dev_priv,
- BIT(VLV_IOSF_SB_CCK) | BIT(VLV_IOSF_SB_BUNIT));
-
if (cdclk == 400000) {
u32 divider;
@@ -588,7 +596,9 @@ static void vlv_set_cdclk(struct drm_i915_private *dev_priv,
vlv_bunit_write(dev_priv, BUNIT_REG_BISOC, val);
vlv_iosf_sb_put(dev_priv,
- BIT(VLV_IOSF_SB_CCK) | BIT(VLV_IOSF_SB_BUNIT));
+ BIT(VLV_IOSF_SB_CCK) |
+ BIT(VLV_IOSF_SB_BUNIT) |
+ BIT(VLV_IOSF_SB_PUNIT));
intel_update_cdclk(dev_priv);
@@ -623,6 +633,8 @@ static void chv_set_cdclk(struct drm_i915_private *dev_priv,
intel_display_power_get(dev_priv, POWER_DOMAIN_PIPE_A);
mutex_lock(&dev_priv->pcu_lock);
+ vlv_punit_get(dev_priv);
+
val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
val &= ~DSPFREQGUAR_MASK_CHV;
val |= (cmd << DSPFREQGUAR_SHIFT_CHV);
@@ -632,6 +644,8 @@ static void chv_set_cdclk(struct drm_i915_private *dev_priv,
50)) {
DRM_ERROR("timed out waiting for CDclk change\n");
}
+
+ vlv_punit_put(dev_priv);
mutex_unlock(&dev_priv->pcu_lock);
intel_update_cdclk(dev_priv);
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 177ee45e0669..b3cbea18283f 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -165,10 +165,8 @@ int vlv_get_hpll_vco(struct drm_i915_private *dev_priv)
int hpll_freq, vco_freq[] = { 800, 1600, 2000, 2400 };
/* Obtain SKU information */
- vlv_cck_get(dev_priv);
hpll_freq = vlv_cck_read(dev_priv, CCK_FUSE_REG) &
CCK_FUSE_HPLL_FREQ_MASK;
- vlv_cck_put(dev_priv);
return vco_freq[hpll_freq] * 1000;
}
@@ -179,10 +177,7 @@ int vlv_get_cck_clock(struct drm_i915_private *dev_priv,
u32 val;
int divider;
- vlv_cck_get(dev_priv);
val = vlv_cck_read(dev_priv, reg);
- vlv_cck_put(dev_priv);
-
divider = val & CCK_FREQUENCY_VALUES;
WARN((val & CCK_FREQUENCY_STATUS) !=
@@ -195,11 +190,18 @@ int vlv_get_cck_clock(struct drm_i915_private *dev_priv,
int vlv_get_cck_clock_hpll(struct drm_i915_private *dev_priv,
const char *name, u32 reg)
{
+ int hpll;
+
+ vlv_cck_get(dev_priv);
+
if (dev_priv->hpll_freq == 0)
dev_priv->hpll_freq = vlv_get_hpll_vco(dev_priv);
- return vlv_get_cck_clock(dev_priv, name, reg,
- dev_priv->hpll_freq);
+ hpll = vlv_get_cck_clock(dev_priv, name, reg, dev_priv->hpll_freq);
+
+ vlv_cck_put(dev_priv);
+
+ return hpll;
}
static void intel_update_czclk(struct drm_i915_private *dev_priv)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 99cf88dba92b..2d02ddc895ca 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -311,6 +311,7 @@ static void chv_set_memory_dvfs(struct drm_i915_private *dev_priv, bool enable)
u32 val;
mutex_lock(&dev_priv->pcu_lock);
+ vlv_punit_get(dev_priv);
val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2);
if (enable)
@@ -325,6 +326,7 @@ static void chv_set_memory_dvfs(struct drm_i915_private *dev_priv, bool enable)
FORCE_DDR_FREQ_REQ_ACK) == 0, 3))
DRM_ERROR("timed out waiting for Punit DDR DVFS request\n");
+ vlv_punit_put(dev_priv);
mutex_unlock(&dev_priv->pcu_lock);
}
@@ -333,6 +335,7 @@ static void chv_set_memory_pm5(struct drm_i915_private *dev_priv, bool enable)
u32 val;
mutex_lock(&dev_priv->pcu_lock);
+ vlv_punit_get(dev_priv);
val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
if (enable)
@@ -341,6 +344,7 @@ static void chv_set_memory_pm5(struct drm_i915_private *dev_priv, bool enable)
val &= ~DSP_MAXFIFO_PM5_ENABLE;
vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
+ vlv_punit_put(dev_priv);
mutex_unlock(&dev_priv->pcu_lock);
}
@@ -5681,6 +5685,7 @@ void vlv_wm_get_hw_state(struct drm_device *dev)
if (IS_CHERRYVIEW(dev_priv)) {
mutex_lock(&dev_priv->pcu_lock);
+ vlv_punit_get(dev_priv);
val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
if (val & DSP_MAXFIFO_PM5_ENABLE)
@@ -5710,6 +5715,7 @@ void vlv_wm_get_hw_state(struct drm_device *dev)
wm->level = VLV_WM_LEVEL_DDR_DVFS;
}
+ vlv_punit_put(dev_priv);
mutex_unlock(&dev_priv->pcu_lock);
}
@@ -6257,7 +6263,9 @@ static int valleyview_set_rps(struct drm_i915_private *dev_priv, u8 val)
I915_WRITE(GEN6_PMINTRMSK, gen6_rps_pm_mask(dev_priv, val));
if (val != dev_priv->gt_pm.rps.cur_freq) {
+ vlv_punit_get(dev_priv);
err = vlv_punit_write(dev_priv, PUNIT_REG_GPU_FREQ_REQ, val);
+ vlv_punit_put(dev_priv);
if (err)
return err;
@@ -7194,6 +7202,11 @@ static void valleyview_init_gt_powersave(struct drm_i915_private *dev_priv)
valleyview_setup_pctx(dev_priv);
+ vlv_iosf_sb_get(dev_priv,
+ BIT(VLV_IOSF_SB_PUNIT) |
+ BIT(VLV_IOSF_SB_NC) |
+ BIT(VLV_IOSF_SB_CCK));
+
vlv_init_gpll_ref_freq(dev_priv);
val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
@@ -7231,6 +7244,11 @@ static void valleyview_init_gt_powersave(struct drm_i915_private *dev_priv)
DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n",
intel_gpu_freq(dev_priv, rps->min_freq),
rps->min_freq);
+
+ vlv_iosf_sb_put(dev_priv,
+ BIT(VLV_IOSF_SB_PUNIT) |
+ BIT(VLV_IOSF_SB_NC) |
+ BIT(VLV_IOSF_SB_CCK));
}
static void cherryview_init_gt_powersave(struct drm_i915_private *dev_priv)
@@ -7240,11 +7258,14 @@ static void cherryview_init_gt_powersave(struct drm_i915_private *dev_priv)
cherryview_setup_pctx(dev_priv);
+ vlv_iosf_sb_get(dev_priv,
+ BIT(VLV_IOSF_SB_PUNIT) |
+ BIT(VLV_IOSF_SB_NC) |
+ BIT(VLV_IOSF_SB_CCK));
+
vlv_init_gpll_ref_freq(dev_priv);
- vlv_cck_get(dev_priv);
val = vlv_cck_read(dev_priv, CCK_FUSE_REG);
- vlv_cck_put(dev_priv);
switch ((val >> 2) & 0x7) {
case 3:
@@ -7277,6 +7298,11 @@ static void cherryview_init_gt_powersave(struct drm_i915_private *dev_priv)
intel_gpu_freq(dev_priv, rps->min_freq),
rps->min_freq);
+ vlv_iosf_sb_put(dev_priv,
+ BIT(VLV_IOSF_SB_PUNIT) |
+ BIT(VLV_IOSF_SB_NC) |
+ BIT(VLV_IOSF_SB_CCK));
+
WARN_ONCE((rps->max_freq | rps->efficient_freq | rps->rp1_freq |
rps->min_freq) & 1,
"Odd GPU freq values\n");
@@ -7364,13 +7390,15 @@ static void cherryview_enable_rps(struct drm_i915_private *dev_priv)
GEN6_RP_DOWN_IDLE_AVG);
/* Setting Fixed Bias */
- val = VLV_OVERRIDE_EN |
- VLV_SOC_TDP_EN |
- CHV_BIAS_CPU_50_SOC_50;
+ vlv_punit_get(dev_priv);
+
+ val = VLV_OVERRIDE_EN | VLV_SOC_TDP_EN | CHV_BIAS_CPU_50_SOC_50;
vlv_punit_write(dev_priv, VLV_TURBO_SOC_OVERRIDE, val);
val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
+ vlv_punit_put(dev_priv);
+
/* RPS code assumes GPLL is used */
WARN_ONCE((val & GPLLENABLE) == 0, "GPLL not enabled\n");
@@ -7447,14 +7475,16 @@ static void valleyview_enable_rps(struct drm_i915_private *dev_priv)
GEN6_RP_UP_BUSY_AVG |
GEN6_RP_DOWN_IDLE_CONT);
+ vlv_punit_get(dev_priv);
+
/* Setting Fixed Bias */
- val = VLV_OVERRIDE_EN |
- VLV_SOC_TDP_EN |
- VLV_BIAS_CPU_125_SOC_875;
+ val = VLV_OVERRIDE_EN | VLV_SOC_TDP_EN | VLV_BIAS_CPU_125_SOC_875;
vlv_punit_write(dev_priv, VLV_TURBO_SOC_OVERRIDE, val);
val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
+ vlv_punit_put(dev_priv);
+
/* RPS code assumes GPLL is used */
WARN_ONCE((val & GPLLENABLE) == 0, "GPLL not enabled\n");
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 7548f16ea722..069b6a30468f 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -816,6 +816,7 @@ static void vlv_set_power_well(struct drm_i915_private *dev_priv,
PUNIT_PWRGT_PWR_GATE(power_well_id);
mutex_lock(&dev_priv->pcu_lock);
+ vlv_punit_get(dev_priv);
#define COND \
((vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_STATUS) & mask) == state)
@@ -836,6 +837,7 @@ static void vlv_set_power_well(struct drm_i915_private *dev_priv,
#undef COND
out:
+ vlv_punit_put(dev_priv);
mutex_unlock(&dev_priv->pcu_lock);
}
@@ -864,6 +866,7 @@ static bool vlv_power_well_enabled(struct drm_i915_private *dev_priv,
ctrl = PUNIT_PWRGT_PWR_ON(power_well_id);
mutex_lock(&dev_priv->pcu_lock);
+ vlv_punit_get(dev_priv);
state = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_STATUS) & mask;
/*
@@ -882,6 +885,7 @@ static bool vlv_power_well_enabled(struct drm_i915_private *dev_priv,
ctrl = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_CTRL) & mask;
WARN_ON(ctrl != state);
+ vlv_punit_put(dev_priv);
mutex_unlock(&dev_priv->pcu_lock);
return enabled;
@@ -1395,6 +1399,7 @@ static bool chv_pipe_power_well_enabled(struct drm_i915_private *dev_priv,
u32 state, ctrl;
mutex_lock(&dev_priv->pcu_lock);
+ vlv_punit_get(dev_priv);
state = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) & DP_SSS_MASK(pipe);
/*
@@ -1411,6 +1416,7 @@ static bool chv_pipe_power_well_enabled(struct drm_i915_private *dev_priv,
ctrl = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) & DP_SSC_MASK(pipe);
WARN_ON(ctrl << 16 != state);
+ vlv_punit_put(dev_priv);
mutex_unlock(&dev_priv->pcu_lock);
return enabled;
@@ -1427,6 +1433,7 @@ static void chv_set_pipe_power_well(struct drm_i915_private *dev_priv,
state = enable ? DP_SSS_PWR_ON(pipe) : DP_SSS_PWR_GATE(pipe);
mutex_lock(&dev_priv->pcu_lock);
+ vlv_punit_get(dev_priv);
#define COND \
((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) & DP_SSS_MASK(pipe)) == state)
@@ -1447,6 +1454,7 @@ static void chv_set_pipe_power_well(struct drm_i915_private *dev_priv,
#undef COND
out:
+ vlv_punit_put(dev_priv);
mutex_unlock(&dev_priv->pcu_lock);
}
diff --git a/drivers/gpu/drm/i915/intel_sideband.c b/drivers/gpu/drm/i915/intel_sideband.c
index 3d7c5917b97c..dc3b491b4d00 100644
--- a/drivers/gpu/drm/i915/intel_sideband.c
+++ b/drivers/gpu/drm/i915/intel_sideband.c
@@ -144,30 +144,18 @@ u32 vlv_punit_read(struct drm_i915_private *dev_priv, u32 addr)
lockdep_assert_held(&dev_priv->pcu_lock);
- vlv_punit_get(dev_priv);
-
vlv_sideband_rw(dev_priv, PCI_DEVFN(0, 0), IOSF_PORT_PUNIT,
SB_CRRDDA_NP, addr, &val);
- vlv_punit_put(dev_priv);
-
return val;
}
int vlv_punit_write(struct drm_i915_private *dev_priv, u32 addr, u32 val)
{
- int err;
-
lockdep_assert_held(&dev_priv->pcu_lock);
- vlv_punit_get(dev_priv);
-
- err = vlv_sideband_rw(dev_priv, PCI_DEVFN(0, 0), IOSF_PORT_PUNIT,
- SB_CRWRDA_NP, addr, &val);
-
- vlv_punit_put(dev_priv);
-
- return err;
+ return vlv_sideband_rw(dev_priv, PCI_DEVFN(0, 0), IOSF_PORT_PUNIT,
+ SB_CRWRDA_NP, addr, &val);
}
void vlv_punit_get(struct drm_i915_private *dev_priv)
@@ -210,10 +198,8 @@ u32 vlv_nc_read(struct drm_i915_private *dev_priv, u8 addr)
{
u32 val = 0;
- vlv_nc_get(dev_priv);
vlv_sideband_rw(dev_priv, PCI_DEVFN(0, 0), IOSF_PORT_NC,
SB_CRRDDA_NP, addr, &val);
- vlv_nc_put(dev_priv);
return val;
}
--
2.16.2
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH 04/10] drm/i915: Reduce RPS update frequency on Valleyview/Cherryview
2018-03-07 19:41 vlv punit and sideband tidy Chris Wilson
` (2 preceding siblings ...)
2018-03-07 19:41 ` [PATCH 03/10] drm/i915: Lift sideband locking for vlv_punit_(read|write) Chris Wilson
@ 2018-03-07 19:41 ` Chris Wilson
2018-03-07 19:41 ` [PATCH 05/10] Revert "drm/i915: Avoid tweaking evaluation thresholds on Baytrail v3" Chris Wilson
` (10 subsequent siblings)
14 siblings, 0 replies; 19+ messages in thread
From: Chris Wilson @ 2018-03-07 19:41 UTC (permalink / raw)
To: intel-gfx
Valleyview and Cherryview update the GPU frequency via the punit, which
is very expensive as we have to ensure the cores do not sleep during the
comms. If we perform frequent RPS evaluations, the frequent punit
requests cause measurable system overhead for little benefit, so
increase the evaluation intervals to reduce the number of times we try
and change frequency.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/intel_pm.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 2d02ddc895ca..29afaa077d32 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -6165,6 +6165,19 @@ static void gen6_set_rps_thresholds(struct drm_i915_private *dev_priv, u8 val)
break;
}
+ if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+ /*
+ * Baytrail and Braswell control the gpu frequency via the
+ * punit, which is very slow and expensive to communicate with,
+ * as we synchronously force the package to C0. If we try and
+ * update the gpufreq too often we cause measurable system
+ * load for little benefit (effectively stealing CPU time for
+ * the GPU, negatively impacting overall throughput).
+ */
+ ei_up <<= 2;
+ ei_down <<= 2;
+ }
+
/* When byt can survive without system hang with dynamic
* sw freq adjustments, this restriction can be lifted.
*/
--
2.16.2
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH 05/10] Revert "drm/i915: Avoid tweaking evaluation thresholds on Baytrail v3"
2018-03-07 19:41 vlv punit and sideband tidy Chris Wilson
` (3 preceding siblings ...)
2018-03-07 19:41 ` [PATCH 04/10] drm/i915: Reduce RPS update frequency on Valleyview/Cherryview Chris Wilson
@ 2018-03-07 19:41 ` Chris Wilson
2018-03-07 19:41 ` [PATCH 06/10] drm/i915: Replace pcu_lock with sb_lock Chris Wilson
` (9 subsequent siblings)
14 siblings, 0 replies; 19+ messages in thread
From: Chris Wilson @ 2018-03-07 19:41 UTC (permalink / raw)
To: intel-gfx; +Cc: Len Brown, Jani Nikula, Daniel Vetter, fritsch
With the vlv sideband fixed to avoid sleeping while we talk to the
punit, the system should be much more stable and be able to utilise the
punit without risk.
This reverts commit 6067a27d1f01 ("drm/i915: Avoid tweaking evaluation
thresholds on Baytrail v3")
References: 6067a27d1f01 ("drm/i915: Avoid tweaking evaluation thresholds on Baytrail v3")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: fritsch@xbmc.org
---
drivers/gpu/drm/i915/intel_pm.c | 7 -------
1 file changed, 7 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 29afaa077d32..1d52bbf1860a 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -6178,12 +6178,6 @@ static void gen6_set_rps_thresholds(struct drm_i915_private *dev_priv, u8 val)
ei_down <<= 2;
}
- /* When byt can survive without system hang with dynamic
- * sw freq adjustments, this restriction can be lifted.
- */
- if (IS_VALLEYVIEW(dev_priv))
- goto skip_hw_write;
-
I915_WRITE(GEN6_RP_UP_EI,
GT_INTERVAL_FROM_US(dev_priv, ei_up));
I915_WRITE(GEN6_RP_UP_THRESHOLD,
@@ -6204,7 +6198,6 @@ static void gen6_set_rps_thresholds(struct drm_i915_private *dev_priv, u8 val)
GEN6_RP_UP_BUSY_AVG |
GEN6_RP_DOWN_IDLE_AVG);
-skip_hw_write:
rps->power = new_power;
rps->up_threshold = threshold_up;
rps->down_threshold = threshold_down;
--
2.16.2
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH 06/10] drm/i915: Replace pcu_lock with sb_lock
2018-03-07 19:41 vlv punit and sideband tidy Chris Wilson
` (4 preceding siblings ...)
2018-03-07 19:41 ` [PATCH 05/10] Revert "drm/i915: Avoid tweaking evaluation thresholds on Baytrail v3" Chris Wilson
@ 2018-03-07 19:41 ` Chris Wilson
2018-03-08 8:06 ` [06/10] " Hans de Goede
2018-03-08 19:49 ` [PATCH v2] " Chris Wilson
2018-03-07 19:41 ` [PATCH 07/10] drm/i915: Separate sideband declarations to intel_sideband.h Chris Wilson
` (8 subsequent siblings)
14 siblings, 2 replies; 19+ messages in thread
From: Chris Wilson @ 2018-03-07 19:41 UTC (permalink / raw)
To: intel-gfx
We now have two locks for sideband access. The general one covering
sideband access across all generation, sb_lock, and a specific one
covering sideband access via the punit on vlv/chv. After lifting the
sb_lock around the punit into the callers, the pcu_lock is now redudant
and can be separated from its other use to regulate RPS (essentially
giving RPS a lock all of its own).
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_debugfs.c | 55 +++++---------
drivers/gpu/drm/i915/i915_drv.h | 10 +--
drivers/gpu/drm/i915/i915_irq.c | 4 +-
drivers/gpu/drm/i915/i915_sysfs.c | 40 +++++-----
drivers/gpu/drm/i915/intel_cdclk.c | 28 -------
drivers/gpu/drm/i915/intel_display.c | 6 --
drivers/gpu/drm/i915/intel_hdcp.c | 2 -
drivers/gpu/drm/i915/intel_pm.c | 127 +++++++++++++++-----------------
drivers/gpu/drm/i915/intel_runtime_pm.c | 8 --
drivers/gpu/drm/i915/intel_sideband.c | 4 -
10 files changed, 104 insertions(+), 180 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 20a6c00a7365..82b8bfe2940c 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1074,8 +1074,6 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
u32 rpmodectl, freq_sts;
- mutex_lock(&dev_priv->pcu_lock);
-
rpmodectl = I915_READ(GEN6_RP_CONTROL);
seq_printf(m, "Video Turbo Mode: %s\n",
yesno(rpmodectl & GEN6_RP_MEDIA_TURBO));
@@ -1110,7 +1108,6 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
seq_printf(m,
"efficient (RPe) frequency: %d MHz\n",
intel_gpu_freq(dev_priv, rps->efficient_freq));
- mutex_unlock(&dev_priv->pcu_lock);
} else if (INTEL_GEN(dev_priv) >= 6) {
u32 rp_state_limits;
u32 gt_perf_status;
@@ -1525,12 +1522,9 @@ static int gen6_drpc_info(struct seq_file *m)
gen9_powergate_status = I915_READ(GEN9_PWRGT_DOMAIN_STATUS);
}
- if (INTEL_GEN(dev_priv) <= 7) {
- mutex_lock(&dev_priv->pcu_lock);
+ if (INTEL_GEN(dev_priv) <= 7)
sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS,
&rc6vids);
- mutex_unlock(&dev_priv->pcu_lock);
- }
seq_printf(m, "RC1e Enabled: %s\n",
yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
@@ -1799,30 +1793,24 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
struct intel_rps *rps = &dev_priv->gt_pm.rps;
- int ret = 0;
int gpu_freq, ia_freq;
unsigned int max_gpu_freq, min_gpu_freq;
if (!HAS_LLC(dev_priv))
return -ENODEV;
- intel_runtime_pm_get(dev_priv);
-
- ret = mutex_lock_interruptible(&dev_priv->pcu_lock);
- if (ret)
- goto out;
+ min_gpu_freq = rps->min_freq;
+ max_gpu_freq = rps->max_freq;
if (IS_GEN9_BC(dev_priv) || IS_CANNONLAKE(dev_priv)) {
/* Convert GT frequency to 50 HZ units */
- min_gpu_freq = rps->min_freq_softlimit / GEN9_FREQ_SCALER;
- max_gpu_freq = rps->max_freq_softlimit / GEN9_FREQ_SCALER;
- } else {
- min_gpu_freq = rps->min_freq_softlimit;
- max_gpu_freq = rps->max_freq_softlimit;
+ min_gpu_freq /= GEN9_FREQ_SCALER;
+ max_gpu_freq /= GEN9_FREQ_SCALER;
}
seq_puts(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\tEffective Ring freq (MHz)\n");
+ intel_runtime_pm_get(dev_priv);
for (gpu_freq = min_gpu_freq; gpu_freq <= max_gpu_freq; gpu_freq++) {
ia_freq = gpu_freq;
sandybridge_pcode_read(dev_priv,
@@ -1836,12 +1824,9 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused)
((ia_freq >> 0) & 0xff) * 100,
((ia_freq >> 8) & 0xff) * 100);
}
-
- mutex_unlock(&dev_priv->pcu_lock);
-
-out:
intel_runtime_pm_put(dev_priv);
- return ret;
+
+ return 0;
}
static int i915_opregion(struct seq_file *m, void *unused)
@@ -4169,7 +4154,7 @@ i915_max_freq_set(void *data, u64 val)
DRM_DEBUG_DRIVER("Manually setting max freq to %llu\n", val);
- ret = mutex_lock_interruptible(&dev_priv->pcu_lock);
+ ret = mutex_lock_interruptible(&rps->lock);
if (ret)
return ret;
@@ -4182,8 +4167,8 @@ i915_max_freq_set(void *data, u64 val)
hw_min = rps->min_freq;
if (val < hw_min || val > hw_max || val < rps->min_freq_softlimit) {
- mutex_unlock(&dev_priv->pcu_lock);
- return -EINVAL;
+ ret = -EINVAL;
+ goto unlock;
}
rps->max_freq_softlimit = val;
@@ -4191,9 +4176,9 @@ i915_max_freq_set(void *data, u64 val)
if (intel_set_rps(dev_priv, val))
DRM_DEBUG_DRIVER("failed to update RPS to new softlimit\n");
- mutex_unlock(&dev_priv->pcu_lock);
-
- return 0;
+unlock:
+ mutex_unlock(&rps->lock);
+ return ret;
}
DEFINE_SIMPLE_ATTRIBUTE(i915_max_freq_fops,
@@ -4225,7 +4210,7 @@ i915_min_freq_set(void *data, u64 val)
DRM_DEBUG_DRIVER("Manually setting min freq to %llu\n", val);
- ret = mutex_lock_interruptible(&dev_priv->pcu_lock);
+ ret = mutex_lock_interruptible(&rps->lock);
if (ret)
return ret;
@@ -4239,8 +4224,8 @@ i915_min_freq_set(void *data, u64 val)
if (val < hw_min ||
val > hw_max || val > rps->max_freq_softlimit) {
- mutex_unlock(&dev_priv->pcu_lock);
- return -EINVAL;
+ ret = -EINVAL;
+ goto unlock;
}
rps->min_freq_softlimit = val;
@@ -4248,9 +4233,9 @@ i915_min_freq_set(void *data, u64 val)
if (intel_set_rps(dev_priv, val))
DRM_DEBUG_DRIVER("failed to update RPS to new softlimit\n");
- mutex_unlock(&dev_priv->pcu_lock);
-
- return 0;
+unlock:
+ mutex_unlock(&rps->lock);
+ return ret;
}
DEFINE_SIMPLE_ATTRIBUTE(i915_min_freq_fops,
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index afc89a8f43e8..61df8c338e20 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -900,6 +900,8 @@ struct intel_rps_ei {
};
struct intel_rps {
+ struct mutex lock;
+
/*
* work, interrupts_enabled and pm_iir are protected by
* dev_priv->irq_lock
@@ -2054,14 +2056,6 @@ struct drm_i915_private {
/* Cannot be determined by PCIID. You must always read a register. */
u32 edram_cap;
- /*
- * Protects RPS/RC6 register access and PCU communication.
- * Must be taken after struct_mutex if nested. Note that
- * this lock may be held for long periods of time when
- * talking to hw - so only take it when talking to hw!
- */
- struct mutex pcu_lock;
-
/* gen6+ GT PM state */
struct intel_gen6_power_mgmt gt_pm;
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 633c18785c1e..c291a8edfcb9 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1204,7 +1204,7 @@ static void gen6_pm_rps_work(struct work_struct *work)
if ((pm_iir & dev_priv->pm_rps_events) == 0 && !client_boost)
goto out;
- mutex_lock(&dev_priv->pcu_lock);
+ mutex_lock(&rps->lock);
pm_iir |= vlv_wa_c0_ei(dev_priv, pm_iir);
@@ -1258,7 +1258,7 @@ static void gen6_pm_rps_work(struct work_struct *work)
rps->last_adj = 0;
}
- mutex_unlock(&dev_priv->pcu_lock);
+ mutex_unlock(&rps->lock);
out:
/* Make sure not to corrupt PMIMR state used by ringbuffer on GEN6 */
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
index 17b20a34e99f..035b2fc72bd1 100644
--- a/drivers/gpu/drm/i915/i915_sysfs.c
+++ b/drivers/gpu/drm/i915/i915_sysfs.c
@@ -262,7 +262,6 @@ static ssize_t gt_act_freq_mhz_show(struct device *kdev,
intel_runtime_pm_get(dev_priv);
- mutex_lock(&dev_priv->pcu_lock);
if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
vlv_punit_get(dev_priv);
freq = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
@@ -272,7 +271,6 @@ static ssize_t gt_act_freq_mhz_show(struct device *kdev,
} else {
freq = intel_get_cagf(dev_priv, I915_READ(GEN6_RPSTAT1));
}
- mutex_unlock(&dev_priv->pcu_lock);
intel_runtime_pm_put(dev_priv);
@@ -304,6 +302,7 @@ static ssize_t gt_boost_freq_mhz_store(struct device *kdev,
{
struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev);
struct intel_rps *rps = &dev_priv->gt_pm.rps;
+ bool boost = false;
u32 val;
ssize_t ret;
@@ -316,9 +315,14 @@ static ssize_t gt_boost_freq_mhz_store(struct device *kdev,
if (val < rps->min_freq || val > rps->max_freq)
return -EINVAL;
- mutex_lock(&dev_priv->pcu_lock);
- rps->boost_freq = val;
- mutex_unlock(&dev_priv->pcu_lock);
+ mutex_lock(&rps->lock);
+ if (val != rps->boost_freq) {
+ rps->boost_freq = val;
+ boost = atomic_read(&rps->num_waiters);
+ }
+ mutex_unlock(&rps->lock);
+ if (boost)
+ schedule_work(&rps->work);
return count;
}
@@ -356,17 +360,14 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
return ret;
intel_runtime_pm_get(dev_priv);
-
- mutex_lock(&dev_priv->pcu_lock);
+ mutex_lock(&rps->lock);
val = intel_freq_opcode(dev_priv, val);
-
if (val < rps->min_freq ||
val > rps->max_freq ||
val < rps->min_freq_softlimit) {
- mutex_unlock(&dev_priv->pcu_lock);
- intel_runtime_pm_put(dev_priv);
- return -EINVAL;
+ ret = -EINVAL;
+ goto unlock;
}
if (val > rps->rp0_freq)
@@ -384,8 +385,8 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
* frequency request may be unchanged. */
ret = intel_set_rps(dev_priv, val);
- mutex_unlock(&dev_priv->pcu_lock);
-
+unlock:
+ mutex_unlock(&rps->lock);
intel_runtime_pm_put(dev_priv);
return ret ?: count;
@@ -414,17 +415,14 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
return ret;
intel_runtime_pm_get(dev_priv);
-
- mutex_lock(&dev_priv->pcu_lock);
+ mutex_lock(&rps->lock);
val = intel_freq_opcode(dev_priv, val);
-
if (val < rps->min_freq ||
val > rps->max_freq ||
val > rps->max_freq_softlimit) {
- mutex_unlock(&dev_priv->pcu_lock);
- intel_runtime_pm_put(dev_priv);
- return -EINVAL;
+ ret = -EINVAL;
+ goto unlock;
}
rps->min_freq_softlimit = val;
@@ -438,8 +436,8 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
* frequency request may be unchanged. */
ret = intel_set_rps(dev_priv, val);
- mutex_unlock(&dev_priv->pcu_lock);
-
+unlock:
+ mutex_unlock(&rps->lock);
intel_runtime_pm_put(dev_priv);
return ret ?: count;
diff --git a/drivers/gpu/drm/i915/intel_cdclk.c b/drivers/gpu/drm/i915/intel_cdclk.c
index e53e8c36a591..b77589d9fb2c 100644
--- a/drivers/gpu/drm/i915/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/intel_cdclk.c
@@ -461,7 +461,6 @@ static void vlv_get_cdclk(struct drm_i915_private *dev_priv,
{
u32 val;
- mutex_lock(&dev_priv->pcu_lock);
vlv_iosf_sb_get(dev_priv,
BIT(VLV_IOSF_SB_CCK) | BIT(VLV_IOSF_SB_PUNIT));
@@ -474,7 +473,6 @@ static void vlv_get_cdclk(struct drm_i915_private *dev_priv,
vlv_iosf_sb_put(dev_priv,
BIT(VLV_IOSF_SB_CCK) | BIT(VLV_IOSF_SB_PUNIT));
- mutex_unlock(&dev_priv->pcu_lock);
if (IS_VALLEYVIEW(dev_priv))
cdclk_state->voltage_level = (val & DSPFREQGUAR_MASK) >>
@@ -551,7 +549,6 @@ static void vlv_set_cdclk(struct drm_i915_private *dev_priv,
BIT(VLV_IOSF_SB_BUNIT) |
BIT(VLV_IOSF_SB_PUNIT));
- mutex_lock(&dev_priv->pcu_lock);
val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
val &= ~DSPFREQGUAR_MASK;
val |= (cmd << DSPFREQGUAR_SHIFT);
@@ -561,7 +558,6 @@ static void vlv_set_cdclk(struct drm_i915_private *dev_priv,
50)) {
DRM_ERROR("timed out waiting for CDclk change\n");
}
- mutex_unlock(&dev_priv->pcu_lock);
if (cdclk == 400000) {
u32 divider;
@@ -632,7 +628,6 @@ static void chv_set_cdclk(struct drm_i915_private *dev_priv,
*/
intel_display_power_get(dev_priv, POWER_DOMAIN_PIPE_A);
- mutex_lock(&dev_priv->pcu_lock);
vlv_punit_get(dev_priv);
val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
@@ -646,7 +641,6 @@ static void chv_set_cdclk(struct drm_i915_private *dev_priv,
}
vlv_punit_put(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
intel_update_cdclk(dev_priv);
@@ -724,10 +718,8 @@ static void bdw_set_cdclk(struct drm_i915_private *dev_priv,
"trying to change cdclk frequency with cdclk not enabled\n"))
return;
- mutex_lock(&dev_priv->pcu_lock);
ret = sandybridge_pcode_write(dev_priv,
BDW_PCODE_DISPLAY_FREQ_CHANGE_REQ, 0x0);
- mutex_unlock(&dev_priv->pcu_lock);
if (ret) {
DRM_ERROR("failed to inform pcode about cdclk change\n");
return;
@@ -776,10 +768,8 @@ static void bdw_set_cdclk(struct drm_i915_private *dev_priv,
LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
DRM_ERROR("Switching back to LCPLL failed\n");
- mutex_lock(&dev_priv->pcu_lock);
sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ,
cdclk_state->voltage_level);
- mutex_unlock(&dev_priv->pcu_lock);
I915_WRITE(CDCLK_FREQ, DIV_ROUND_CLOSEST(cdclk, 1000) - 1);
@@ -1007,12 +997,10 @@ static void skl_set_cdclk(struct drm_i915_private *dev_priv,
u32 freq_select, cdclk_ctl;
int ret;
- mutex_lock(&dev_priv->pcu_lock);
ret = skl_pcode_request(dev_priv, SKL_PCODE_CDCLK_CONTROL,
SKL_CDCLK_PREPARE_FOR_CHANGE,
SKL_CDCLK_READY_FOR_CHANGE,
SKL_CDCLK_READY_FOR_CHANGE, 3);
- mutex_unlock(&dev_priv->pcu_lock);
if (ret) {
DRM_ERROR("Failed to inform PCU about cdclk change (%d)\n",
ret);
@@ -1076,10 +1064,8 @@ static void skl_set_cdclk(struct drm_i915_private *dev_priv,
POSTING_READ(CDCLK_CTL);
/* inform PCU of the change */
- mutex_lock(&dev_priv->pcu_lock);
sandybridge_pcode_write(dev_priv, SKL_PCODE_CDCLK_CONTROL,
cdclk_state->voltage_level);
- mutex_unlock(&dev_priv->pcu_lock);
intel_update_cdclk(dev_priv);
}
@@ -1391,12 +1377,9 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
* requires us to wait up to 150usec, but that leads to timeouts;
* the 2ms used here is based on experiment.
*/
- mutex_lock(&dev_priv->pcu_lock);
ret = sandybridge_pcode_write_timeout(dev_priv,
HSW_PCODE_DE_WRITE_FREQ_REQ,
0x80000000, 150, 2);
- mutex_unlock(&dev_priv->pcu_lock);
-
if (ret) {
DRM_ERROR("PCode CDCLK freq change notify failed (err %d, freq %d)\n",
ret, cdclk);
@@ -1424,7 +1407,6 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
val |= BXT_CDCLK_SSA_PRECHARGE_ENABLE;
I915_WRITE(CDCLK_CTL, val);
- mutex_lock(&dev_priv->pcu_lock);
/*
* The timeout isn't specified, the 2ms used here is based on
* experiment.
@@ -1434,8 +1416,6 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
ret = sandybridge_pcode_write_timeout(dev_priv,
HSW_PCODE_DE_WRITE_FREQ_REQ,
cdclk_state->voltage_level, 150, 2);
- mutex_unlock(&dev_priv->pcu_lock);
-
if (ret) {
DRM_ERROR("PCode CDCLK freq set failed, (err %d, freq %d)\n",
ret, cdclk);
@@ -1673,12 +1653,10 @@ static void cnl_set_cdclk(struct drm_i915_private *dev_priv,
u32 val, divider;
int ret;
- mutex_lock(&dev_priv->pcu_lock);
ret = skl_pcode_request(dev_priv, SKL_PCODE_CDCLK_CONTROL,
SKL_CDCLK_PREPARE_FOR_CHANGE,
SKL_CDCLK_READY_FOR_CHANGE,
SKL_CDCLK_READY_FOR_CHANGE, 3);
- mutex_unlock(&dev_priv->pcu_lock);
if (ret) {
DRM_ERROR("Failed to inform PCU about cdclk change (%d)\n",
ret);
@@ -1715,10 +1693,8 @@ static void cnl_set_cdclk(struct drm_i915_private *dev_priv,
I915_WRITE(CDCLK_CTL, val);
/* inform PCU of the change */
- mutex_lock(&dev_priv->pcu_lock);
sandybridge_pcode_write(dev_priv, SKL_PCODE_CDCLK_CONTROL,
cdclk_state->voltage_level);
- mutex_unlock(&dev_priv->pcu_lock);
intel_update_cdclk(dev_priv);
@@ -1854,12 +1830,10 @@ static void icl_set_cdclk(struct drm_i915_private *dev_priv,
unsigned int vco = cdclk_state->vco;
int ret;
- mutex_lock(&dev_priv->pcu_lock);
ret = skl_pcode_request(dev_priv, SKL_PCODE_CDCLK_CONTROL,
SKL_CDCLK_PREPARE_FOR_CHANGE,
SKL_CDCLK_READY_FOR_CHANGE,
SKL_CDCLK_READY_FOR_CHANGE, 3);
- mutex_unlock(&dev_priv->pcu_lock);
if (ret) {
DRM_ERROR("Failed to inform PCU about cdclk change (%d)\n",
ret);
@@ -1876,10 +1850,8 @@ static void icl_set_cdclk(struct drm_i915_private *dev_priv,
I915_WRITE(CDCLK_CTL, ICL_CDCLK_CD2X_PIPE_NONE |
skl_cdclk_decimal(cdclk));
- mutex_lock(&dev_priv->pcu_lock);
/* TODO: add proper DVFS support. */
sandybridge_pcode_write(dev_priv, SKL_PCODE_CDCLK_CONTROL, 2);
- mutex_unlock(&dev_priv->pcu_lock);
intel_update_cdclk(dev_priv);
}
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index b3cbea18283f..c27bbb517f55 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4934,10 +4934,8 @@ void hsw_enable_ips(const struct intel_crtc_state *crtc_state)
WARN_ON(!(crtc_state->active_planes & ~BIT(PLANE_CURSOR)));
if (IS_BROADWELL(dev_priv)) {
- mutex_lock(&dev_priv->pcu_lock);
WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL,
IPS_ENABLE | IPS_PCODE_CONTROL));
- mutex_unlock(&dev_priv->pcu_lock);
/* Quoting Art Runyan: "its not safe to expect any particular
* value in IPS_CTL bit 31 after enabling IPS through the
* mailbox." Moreover, the mailbox may return a bogus state,
@@ -4967,9 +4965,7 @@ void hsw_disable_ips(const struct intel_crtc_state *crtc_state)
return;
if (IS_BROADWELL(dev_priv)) {
- mutex_lock(&dev_priv->pcu_lock);
WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0));
- mutex_unlock(&dev_priv->pcu_lock);
/* wait for pcode to finish disabling IPS, which may take up to 42ms */
if (intel_wait_for_register(dev_priv,
IPS_CTL, IPS_ENABLE, 0,
@@ -8841,11 +8837,9 @@ static uint32_t hsw_read_dcomp(struct drm_i915_private *dev_priv)
static void hsw_write_dcomp(struct drm_i915_private *dev_priv, uint32_t val)
{
if (IS_HASWELL(dev_priv)) {
- mutex_lock(&dev_priv->pcu_lock);
if (sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_D_COMP,
val))
DRM_DEBUG_KMS("Failed to write to D_COMP\n");
- mutex_unlock(&dev_priv->pcu_lock);
} else {
I915_WRITE(D_COMP_BDW, val);
POSTING_READ(D_COMP_BDW);
diff --git a/drivers/gpu/drm/i915/intel_hdcp.c b/drivers/gpu/drm/i915/intel_hdcp.c
index 14ca5d3057a7..81259a4fbdfd 100644
--- a/drivers/gpu/drm/i915/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/intel_hdcp.c
@@ -68,10 +68,8 @@ static int intel_hdcp_load_keys(struct drm_i915_private *dev_priv)
* differ in the key load trigger process from other platforms.
*/
if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
- mutex_lock(&dev_priv->pcu_lock);
ret = sandybridge_pcode_write(dev_priv,
SKL_PCODE_LOAD_HDCP_KEYS, 1);
- mutex_unlock(&dev_priv->pcu_lock);
if (ret) {
DRM_ERROR("Failed to initiate HDCP key load (%d)\n",
ret);
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 1d52bbf1860a..376c7d4ff972 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -310,7 +310,6 @@ static void chv_set_memory_dvfs(struct drm_i915_private *dev_priv, bool enable)
{
u32 val;
- mutex_lock(&dev_priv->pcu_lock);
vlv_punit_get(dev_priv);
val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2);
@@ -327,14 +326,12 @@ static void chv_set_memory_dvfs(struct drm_i915_private *dev_priv, bool enable)
DRM_ERROR("timed out waiting for Punit DDR DVFS request\n");
vlv_punit_put(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
}
static void chv_set_memory_pm5(struct drm_i915_private *dev_priv, bool enable)
{
u32 val;
- mutex_lock(&dev_priv->pcu_lock);
vlv_punit_get(dev_priv);
val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
@@ -345,7 +342,6 @@ static void chv_set_memory_pm5(struct drm_i915_private *dev_priv, bool enable)
vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
vlv_punit_put(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
}
#define FW_WM(value, plane) \
@@ -2810,11 +2806,9 @@ static void intel_read_wm_latency(struct drm_i915_private *dev_priv,
/* read the first set of memory latencies[0:3] */
val = 0; /* data0 to be programmed to 0 for first set */
- mutex_lock(&dev_priv->pcu_lock);
ret = sandybridge_pcode_read(dev_priv,
GEN9_PCODE_READ_MEM_LATENCY,
&val);
- mutex_unlock(&dev_priv->pcu_lock);
if (ret) {
DRM_ERROR("SKL Mailbox read error = %d\n", ret);
@@ -2831,11 +2825,9 @@ static void intel_read_wm_latency(struct drm_i915_private *dev_priv,
/* read the second set of memory latencies[4:7] */
val = 1; /* data0 to be programmed to 1 for second set */
- mutex_lock(&dev_priv->pcu_lock);
ret = sandybridge_pcode_read(dev_priv,
GEN9_PCODE_READ_MEM_LATENCY,
&val);
- mutex_unlock(&dev_priv->pcu_lock);
if (ret) {
DRM_ERROR("SKL Mailbox read error = %d\n", ret);
return;
@@ -3622,13 +3614,10 @@ intel_enable_sagv(struct drm_i915_private *dev_priv)
return 0;
DRM_DEBUG_KMS("Enabling the SAGV\n");
- mutex_lock(&dev_priv->pcu_lock);
-
ret = sandybridge_pcode_write(dev_priv, GEN9_PCODE_SAGV_CONTROL,
GEN9_SAGV_ENABLE);
/* We don't need to wait for the SAGV when enabling */
- mutex_unlock(&dev_priv->pcu_lock);
/*
* Some skl systems, pre-release machines in particular,
@@ -3659,15 +3648,11 @@ intel_disable_sagv(struct drm_i915_private *dev_priv)
return 0;
DRM_DEBUG_KMS("Disabling the SAGV\n");
- mutex_lock(&dev_priv->pcu_lock);
-
/* bspec says to keep retrying for at least 1 ms */
ret = skl_pcode_request(dev_priv, GEN9_PCODE_SAGV_CONTROL,
GEN9_SAGV_DISABLE,
GEN9_SAGV_IS_DISABLED, GEN9_SAGV_IS_DISABLED,
1);
- mutex_unlock(&dev_priv->pcu_lock);
-
/*
* Some skl systems, pre-release machines in particular,
* don't actually have an SAGV.
@@ -5684,7 +5669,6 @@ void vlv_wm_get_hw_state(struct drm_device *dev)
wm->level = VLV_WM_LEVEL_PM2;
if (IS_CHERRYVIEW(dev_priv)) {
- mutex_lock(&dev_priv->pcu_lock);
vlv_punit_get(dev_priv);
val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
@@ -5716,7 +5700,6 @@ void vlv_wm_get_hw_state(struct drm_device *dev)
}
vlv_punit_put(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
}
for_each_intel_crtc(dev, crtc) {
@@ -6324,7 +6307,7 @@ void gen6_rps_busy(struct drm_i915_private *dev_priv)
{
struct intel_rps *rps = &dev_priv->gt_pm.rps;
- mutex_lock(&dev_priv->pcu_lock);
+ mutex_lock(&rps->lock);
if (rps->enabled) {
u8 freq;
@@ -6347,7 +6330,7 @@ void gen6_rps_busy(struct drm_i915_private *dev_priv)
rps->max_freq_softlimit)))
DRM_DEBUG_DRIVER("Failed to set idle frequency\n");
}
- mutex_unlock(&dev_priv->pcu_lock);
+ mutex_unlock(&rps->lock);
}
void gen6_rps_idle(struct drm_i915_private *dev_priv)
@@ -6361,7 +6344,7 @@ void gen6_rps_idle(struct drm_i915_private *dev_priv)
*/
gen6_disable_rps_interrupts(dev_priv);
- mutex_lock(&dev_priv->pcu_lock);
+ mutex_lock(&rps->lock);
if (rps->enabled) {
if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
vlv_set_rps_idle(dev_priv);
@@ -6371,7 +6354,7 @@ void gen6_rps_idle(struct drm_i915_private *dev_priv)
I915_WRITE(GEN6_PMINTRMSK,
gen6_sanitize_rps_pm_mask(dev_priv, ~0));
}
- mutex_unlock(&dev_priv->pcu_lock);
+ mutex_unlock(&rps->lock);
}
void gen6_rps_boost(struct i915_request *rq,
@@ -6412,7 +6395,7 @@ int intel_set_rps(struct drm_i915_private *dev_priv, u8 val)
struct intel_rps *rps = &dev_priv->gt_pm.rps;
int err;
- lockdep_assert_held(&dev_priv->pcu_lock);
+ lockdep_assert_held(&rps->lock);
GEM_BUG_ON(val > rps->max_freq);
GEM_BUG_ON(val < rps->min_freq);
@@ -6911,7 +6894,7 @@ static void gen6_update_ring_freq(struct drm_i915_private *dev_priv)
int scaling_factor = 180;
struct cpufreq_policy *policy;
- WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
+ lockdep_assert_held(&rps->lock);
policy = cpufreq_cpu_get(0);
if (policy) {
@@ -7988,7 +7971,7 @@ void intel_init_gt_powersave(struct drm_i915_private *dev_priv)
intel_runtime_pm_get(dev_priv);
}
- mutex_lock(&dev_priv->pcu_lock);
+ mutex_lock(&rps->lock);
/* Initialize RPS limits (for userspace) */
if (IS_CHERRYVIEW(dev_priv))
@@ -8028,7 +8011,7 @@ void intel_init_gt_powersave(struct drm_i915_private *dev_priv)
/* Finally allow us to boost to max by default */
rps->boost_freq = rps->max_freq;
- mutex_unlock(&dev_priv->pcu_lock);
+ mutex_unlock(&rps->lock);
}
void intel_cleanup_gt_powersave(struct drm_i915_private *dev_priv)
@@ -8070,7 +8053,7 @@ void intel_sanitize_gt_powersave(struct drm_i915_private *dev_priv)
static inline void intel_disable_llc_pstate(struct drm_i915_private *i915)
{
- lockdep_assert_held(&i915->pcu_lock);
+ lockdep_assert_held(&i915->gt_pm.rps.lock);
if (!i915->gt_pm.llc_pstate.enabled)
return;
@@ -8082,7 +8065,7 @@ static inline void intel_disable_llc_pstate(struct drm_i915_private *i915)
static void intel_disable_rc6(struct drm_i915_private *dev_priv)
{
- lockdep_assert_held(&dev_priv->pcu_lock);
+ lockdep_assert_held(&dev_priv->gt_pm.rps.lock);
if (!dev_priv->gt_pm.rc6.enabled)
return;
@@ -8101,7 +8084,7 @@ static void intel_disable_rc6(struct drm_i915_private *dev_priv)
static void intel_disable_rps(struct drm_i915_private *dev_priv)
{
- lockdep_assert_held(&dev_priv->pcu_lock);
+ lockdep_assert_held(&dev_priv->gt_pm.rps.lock);
if (!dev_priv->gt_pm.rps.enabled)
return;
@@ -8122,19 +8105,19 @@ static void intel_disable_rps(struct drm_i915_private *dev_priv)
void intel_disable_gt_powersave(struct drm_i915_private *dev_priv)
{
- mutex_lock(&dev_priv->pcu_lock);
+ mutex_lock(&dev_priv->gt_pm.rps.lock);
intel_disable_rc6(dev_priv);
intel_disable_rps(dev_priv);
if (HAS_LLC(dev_priv))
intel_disable_llc_pstate(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
+ mutex_unlock(&dev_priv->gt_pm.rps.lock);
}
static inline void intel_enable_llc_pstate(struct drm_i915_private *i915)
{
- lockdep_assert_held(&i915->pcu_lock);
+ lockdep_assert_held(&i915->gt_pm.rps.lock);
if (i915->gt_pm.llc_pstate.enabled)
return;
@@ -8146,7 +8129,7 @@ static inline void intel_enable_llc_pstate(struct drm_i915_private *i915)
static void intel_enable_rc6(struct drm_i915_private *dev_priv)
{
- lockdep_assert_held(&dev_priv->pcu_lock);
+ lockdep_assert_held(&dev_priv->gt_pm.rps.lock);
if (dev_priv->gt_pm.rc6.enabled)
return;
@@ -8169,7 +8152,7 @@ static void intel_enable_rps(struct drm_i915_private *dev_priv)
{
struct intel_rps *rps = &dev_priv->gt_pm.rps;
- lockdep_assert_held(&dev_priv->pcu_lock);
+ lockdep_assert_held(&rps->lock);
if (rps->enabled)
return;
@@ -8206,7 +8189,7 @@ void intel_enable_gt_powersave(struct drm_i915_private *dev_priv)
if (intel_vgpu_active(dev_priv))
return;
- mutex_lock(&dev_priv->pcu_lock);
+ mutex_lock(&dev_priv->gt_pm.rps.lock);
if (HAS_RC6(dev_priv))
intel_enable_rc6(dev_priv);
@@ -8214,7 +8197,7 @@ void intel_enable_gt_powersave(struct drm_i915_private *dev_priv)
if (HAS_LLC(dev_priv))
intel_enable_llc_pstate(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
+ mutex_unlock(&dev_priv->gt_pm.rps.lock);
}
static void ibx_init_clock_gating(struct drm_i915_private *dev_priv)
@@ -9214,22 +9197,19 @@ static inline int gen7_check_mailbox_status(struct drm_i915_private *dev_priv)
}
}
-int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val)
+static int __sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val)
{
int status;
- WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
+ lockdep_assert_held(&dev_priv->sb_lock);
/* GEN6_PCODE_* are outside of the forcewake domain, we can
* use te fw I915_READ variants to reduce the amount of work
* required when reading/writing.
*/
- if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) {
- DRM_DEBUG_DRIVER("warning: pcode (read from mbox %x) mailbox access failed for %ps\n",
- mbox, __builtin_return_address(0));
+ if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY)
return -EAGAIN;
- }
I915_WRITE_FW(GEN6_PCODE_DATA, *val);
I915_WRITE_FW(GEN6_PCODE_DATA1, 0);
@@ -9237,11 +9217,8 @@ int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val
if (__intel_wait_for_register_fw(dev_priv,
GEN6_PCODE_MAILBOX, GEN6_PCODE_READY, 0,
- 500, 0, NULL)) {
- DRM_ERROR("timeout waiting for pcode read (from mbox %x) to finish for %ps\n",
- mbox, __builtin_return_address(0));
+ 500, 0, NULL))
return -ETIMEDOUT;
- }
*val = I915_READ_FW(GEN6_PCODE_DATA);
I915_WRITE_FW(GEN6_PCODE_DATA, 0);
@@ -9251,33 +9228,39 @@ int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val
else
status = gen6_check_mailbox_status(dev_priv);
+ return status;
+}
+
+int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val)
+{
+ int status;
+
+ mutex_lock(&dev_priv->sb_lock);
+ status = __sandybridge_pcode_read(dev_priv, mbox, val);
+ mutex_unlock(&dev_priv->sb_lock);
+
if (status) {
DRM_DEBUG_DRIVER("warning: pcode (read from mbox %x) mailbox access failed for %ps: %d\n",
mbox, __builtin_return_address(0), status);
- return status;
}
- return 0;
+ return status;
}
-int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
- u32 mbox, u32 val,
- int fast_timeout_us, int slow_timeout_ms)
+static int __sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
+ u32 mbox, u32 val,
+ int fast_timeout_us,
+ int slow_timeout_ms)
{
int status;
- WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
-
/* GEN6_PCODE_* are outside of the forcewake domain, we can
* use te fw I915_READ variants to reduce the amount of work
* required when reading/writing.
*/
- if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) {
- DRM_DEBUG_DRIVER("warning: pcode (write of 0x%08x to mbox %x) mailbox access failed for %ps\n",
- val, mbox, __builtin_return_address(0));
+ if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY)
return -EAGAIN;
- }
I915_WRITE_FW(GEN6_PCODE_DATA, val);
I915_WRITE_FW(GEN6_PCODE_DATA1, 0);
@@ -9286,11 +9269,8 @@ int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
if (__intel_wait_for_register_fw(dev_priv,
GEN6_PCODE_MAILBOX, GEN6_PCODE_READY, 0,
fast_timeout_us, slow_timeout_ms,
- NULL)) {
- DRM_ERROR("timeout waiting for pcode write of 0x%08x to mbox %x to finish for %ps\n",
- val, mbox, __builtin_return_address(0));
+ NULL))
return -ETIMEDOUT;
- }
I915_WRITE_FW(GEN6_PCODE_DATA, 0);
@@ -9299,13 +9279,28 @@ int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
else
status = gen6_check_mailbox_status(dev_priv);
+ return status;
+}
+
+int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
+ u32 mbox, u32 val,
+ int fast_timeout_us,
+ int slow_timeout_ms)
+{
+ int status;
+
+ mutex_lock(&dev_priv->sb_lock);
+ status = __sandybridge_pcode_write_timeout(dev_priv, mbox, val,
+ fast_timeout_us,
+ slow_timeout_ms);
+ mutex_unlock(&dev_priv->sb_lock);
+
if (status) {
DRM_DEBUG_DRIVER("warning: pcode (write of 0x%08x to mbox %x) mailbox access failed for %ps: %d\n",
val, mbox, __builtin_return_address(0), status);
- return status;
}
- return 0;
+ return status;
}
static bool skl_pcode_try_request(struct drm_i915_private *dev_priv, u32 mbox,
@@ -9314,7 +9309,7 @@ static bool skl_pcode_try_request(struct drm_i915_private *dev_priv, u32 mbox,
{
u32 val = request;
- *status = sandybridge_pcode_read(dev_priv, mbox, &val);
+ *status = __sandybridge_pcode_read(dev_priv, mbox, &val);
return *status || ((val & reply_mask) == reply);
}
@@ -9344,7 +9339,7 @@ int skl_pcode_request(struct drm_i915_private *dev_priv, u32 mbox, u32 request,
u32 status;
int ret;
- WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
+ mutex_lock(&dev_priv->sb_lock);
#define COND skl_pcode_try_request(dev_priv, mbox, request, reply_mask, reply, \
&status)
@@ -9380,6 +9375,7 @@ int skl_pcode_request(struct drm_i915_private *dev_priv, u32 mbox, u32 request,
preempt_enable();
out:
+ mutex_unlock(&dev_priv->sb_lock);
return ret ? ret : status;
#undef COND
}
@@ -9449,8 +9445,7 @@ int intel_freq_opcode(struct drm_i915_private *dev_priv, int val)
void intel_pm_setup(struct drm_i915_private *dev_priv)
{
- mutex_init(&dev_priv->pcu_lock);
-
+ mutex_init(&dev_priv->gt_pm.rps.lock);
atomic_set(&dev_priv->gt_pm.rps.num_waiters, 0);
dev_priv->runtime_pm.suspended = false;
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 069b6a30468f..2cc64f0fda57 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -815,7 +815,6 @@ static void vlv_set_power_well(struct drm_i915_private *dev_priv,
state = enable ? PUNIT_PWRGT_PWR_ON(power_well_id) :
PUNIT_PWRGT_PWR_GATE(power_well_id);
- mutex_lock(&dev_priv->pcu_lock);
vlv_punit_get(dev_priv);
#define COND \
@@ -838,7 +837,6 @@ static void vlv_set_power_well(struct drm_i915_private *dev_priv,
out:
vlv_punit_put(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
}
static void vlv_power_well_enable(struct drm_i915_private *dev_priv,
@@ -865,7 +863,6 @@ static bool vlv_power_well_enabled(struct drm_i915_private *dev_priv,
mask = PUNIT_PWRGT_MASK(power_well_id);
ctrl = PUNIT_PWRGT_PWR_ON(power_well_id);
- mutex_lock(&dev_priv->pcu_lock);
vlv_punit_get(dev_priv);
state = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_STATUS) & mask;
@@ -886,7 +883,6 @@ static bool vlv_power_well_enabled(struct drm_i915_private *dev_priv,
WARN_ON(ctrl != state);
vlv_punit_put(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
return enabled;
}
@@ -1398,7 +1394,6 @@ static bool chv_pipe_power_well_enabled(struct drm_i915_private *dev_priv,
bool enabled;
u32 state, ctrl;
- mutex_lock(&dev_priv->pcu_lock);
vlv_punit_get(dev_priv);
state = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) & DP_SSS_MASK(pipe);
@@ -1417,7 +1412,6 @@ static bool chv_pipe_power_well_enabled(struct drm_i915_private *dev_priv,
WARN_ON(ctrl << 16 != state);
vlv_punit_put(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
return enabled;
}
@@ -1432,7 +1426,6 @@ static void chv_set_pipe_power_well(struct drm_i915_private *dev_priv,
state = enable ? DP_SSS_PWR_ON(pipe) : DP_SSS_PWR_GATE(pipe);
- mutex_lock(&dev_priv->pcu_lock);
vlv_punit_get(dev_priv);
#define COND \
@@ -1455,7 +1448,6 @@ static void chv_set_pipe_power_well(struct drm_i915_private *dev_priv,
out:
vlv_punit_put(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
}
static void chv_pipe_power_well_enable(struct drm_i915_private *dev_priv,
diff --git a/drivers/gpu/drm/i915/intel_sideband.c b/drivers/gpu/drm/i915/intel_sideband.c
index dc3b491b4d00..2d4e48e9e1d5 100644
--- a/drivers/gpu/drm/i915/intel_sideband.c
+++ b/drivers/gpu/drm/i915/intel_sideband.c
@@ -142,8 +142,6 @@ u32 vlv_punit_read(struct drm_i915_private *dev_priv, u32 addr)
{
u32 val = 0;
- lockdep_assert_held(&dev_priv->pcu_lock);
-
vlv_sideband_rw(dev_priv, PCI_DEVFN(0, 0), IOSF_PORT_PUNIT,
SB_CRRDDA_NP, addr, &val);
@@ -152,8 +150,6 @@ u32 vlv_punit_read(struct drm_i915_private *dev_priv, u32 addr)
int vlv_punit_write(struct drm_i915_private *dev_priv, u32 addr, u32 val)
{
- lockdep_assert_held(&dev_priv->pcu_lock);
-
return vlv_sideband_rw(dev_priv, PCI_DEVFN(0, 0), IOSF_PORT_PUNIT,
SB_CRWRDA_NP, addr, &val);
}
--
2.16.2
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH 07/10] drm/i915: Separate sideband declarations to intel_sideband.h
2018-03-07 19:41 vlv punit and sideband tidy Chris Wilson
` (5 preceding siblings ...)
2018-03-07 19:41 ` [PATCH 06/10] drm/i915: Replace pcu_lock with sb_lock Chris Wilson
@ 2018-03-07 19:41 ` Chris Wilson
2018-03-07 19:42 ` [PATCH 08/10] drm/i915: Merge sbi read/write into a single accessor Chris Wilson
` (7 subsequent siblings)
14 siblings, 0 replies; 19+ messages in thread
From: Chris Wilson @ 2018-03-07 19:41 UTC (permalink / raw)
To: intel-gfx
Split the sideback declarations out of the ginormous i915_drv.h
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_debugfs.c | 2 +
drivers/gpu/drm/i915/i915_drv.h | 62 ----------------------------
drivers/gpu/drm/i915/i915_sysfs.c | 2 +
drivers/gpu/drm/i915/intel_cdclk.c | 1 +
drivers/gpu/drm/i915/intel_display.c | 19 +++++----
drivers/gpu/drm/i915/intel_dp.c | 6 ++-
drivers/gpu/drm/i915/intel_dpio_phy.c | 1 +
drivers/gpu/drm/i915/intel_dsi.c | 7 +++-
drivers/gpu/drm/i915/intel_dsi_pll.c | 4 +-
drivers/gpu/drm/i915/intel_dsi_vbt.c | 11 +++--
drivers/gpu/drm/i915/intel_hdmi.c | 5 ++-
drivers/gpu/drm/i915/intel_pm.c | 7 +++-
drivers/gpu/drm/i915/intel_runtime_pm.c | 1 +
drivers/gpu/drm/i915/intel_sideband.c | 2 +
drivers/gpu/drm/i915/intel_sideband.h | 71 +++++++++++++++++++++++++++++++++
15 files changed, 121 insertions(+), 80 deletions(-)
create mode 100644 drivers/gpu/drm/i915/intel_sideband.h
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 82b8bfe2940c..9cade1a8baff 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -29,8 +29,10 @@
#include <linux/debugfs.h>
#include <linux/sort.h>
#include <linux/sched/mm.h>
+
#include "intel_drv.h"
#include "intel_guc_submission.h"
+#include "intel_sideband.h"
static inline struct drm_i915_private *node_to_i915(struct drm_info_node *node)
{
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 61df8c338e20..f421009fe6f7 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -794,11 +794,6 @@ enum intel_pch {
PCH_NOP,
};
-enum intel_sbi_destination {
- SBI_ICLK,
- SBI_MPHY,
-};
-
#define QUIRK_LVDS_SSC_DISABLE (1<<1)
#define QUIRK_INVERT_BRIGHTNESS (1<<2)
#define QUIRK_BACKLIGHT_PRESENT (1<<3)
@@ -3766,63 +3761,6 @@ int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv, u32 mbox,
int skl_pcode_request(struct drm_i915_private *dev_priv, u32 mbox, u32 request,
u32 reply_mask, u32 reply, int timeout_base_ms);
-/* intel_sideband.c */
-
-enum {
- VLV_IOSF_SB_BUNIT,
- VLV_IOSF_SB_CCK,
- VLV_IOSF_SB_CCU,
- VLV_IOSF_SB_DPIO,
- VLV_IOSF_SB_FLISDSI,
- VLV_IOSF_SB_GPIO,
- VLV_IOSF_SB_NC,
- VLV_IOSF_SB_PUNIT,
-};
-
-void vlv_iosf_sb_get(struct drm_i915_private *dev_priv, unsigned long ports);
-u32 vlv_iosf_sb_read(struct drm_i915_private *dev_priv, u8 port, u32 reg);
-void vlv_iosf_sb_write(struct drm_i915_private *dev_priv, u8 port, u32 reg, u32 val);
-void vlv_iosf_sb_put(struct drm_i915_private *dev_priv, unsigned long ports);
-
-void vlv_punit_get(struct drm_i915_private *dev_priv);
-u32 vlv_punit_read(struct drm_i915_private *dev_priv, u32 addr);
-int vlv_punit_write(struct drm_i915_private *dev_priv, u32 addr, u32 val);
-void vlv_punit_put(struct drm_i915_private *dev_priv);
-
-void vlv_nc_get(struct drm_i915_private *dev_priv);
-u32 vlv_nc_read(struct drm_i915_private *dev_priv, u8 addr);
-void vlv_nc_put(struct drm_i915_private *dev_priv);
-
-void vlv_cck_get(struct drm_i915_private *dev_priv);
-u32 vlv_cck_read(struct drm_i915_private *dev_priv, u32 reg);
-void vlv_cck_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
-void vlv_cck_put(struct drm_i915_private *dev_priv);
-
-void vlv_ccu_get(struct drm_i915_private *dev_priv);
-u32 vlv_ccu_read(struct drm_i915_private *dev_priv, u32 reg);
-void vlv_ccu_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
-void vlv_ccu_put(struct drm_i915_private *dev_priv);
-
-void vlv_bunit_get(struct drm_i915_private *dev_priv);
-u32 vlv_bunit_read(struct drm_i915_private *dev_priv, u32 reg);
-void vlv_bunit_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
-void vlv_bunit_put(struct drm_i915_private *dev_priv);
-
-void vlv_dpio_get(struct drm_i915_private *dev_priv);
-u32 vlv_dpio_read(struct drm_i915_private *dev_priv, enum pipe pipe, int reg);
-void vlv_dpio_write(struct drm_i915_private *dev_priv, enum pipe pipe, int reg, u32 val);
-void vlv_dpio_put(struct drm_i915_private *dev_priv);
-
-void vlv_flisdsi_get(struct drm_i915_private *dev_priv);
-u32 vlv_flisdsi_read(struct drm_i915_private *dev_priv, u32 reg);
-void vlv_flisdsi_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
-void vlv_flisdsi_put(struct drm_i915_private *dev_priv);
-
-u32 intel_sbi_read(struct drm_i915_private *dev_priv, u16 reg,
- enum intel_sbi_destination destination);
-void intel_sbi_write(struct drm_i915_private *dev_priv, u16 reg, u32 value,
- enum intel_sbi_destination destination);
-
/* intel_dpio_phy.c */
void bxt_port_to_phy_channel(struct drm_i915_private *dev_priv, enum port port,
enum dpio_phy *phy, enum dpio_channel *ch);
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
index 035b2fc72bd1..2ddd07cef682 100644
--- a/drivers/gpu/drm/i915/i915_sysfs.c
+++ b/drivers/gpu/drm/i915/i915_sysfs.c
@@ -29,7 +29,9 @@
#include <linux/module.h>
#include <linux/stat.h>
#include <linux/sysfs.h>
+
#include "intel_drv.h"
+#include "intel_sideband.h"
#include "i915_drv.h"
static inline struct drm_i915_private *kdev_minor_to_i915(struct device *kdev)
diff --git a/drivers/gpu/drm/i915/intel_cdclk.c b/drivers/gpu/drm/i915/intel_cdclk.c
index b77589d9fb2c..019f99803e46 100644
--- a/drivers/gpu/drm/i915/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/intel_cdclk.c
@@ -22,6 +22,7 @@
*/
#include "intel_drv.h"
+#include "intel_sideband.h"
/**
* DOC: CDCLK / RAWCLK
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index c27bbb517f55..1a4cc1bf573c 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -31,23 +31,26 @@
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/vgaarb.h>
+#include <linux/dma_remapping.h>
+#include <linux/reservation.h>
+
#include <drm/drm_edid.h>
#include <drm/drmP.h>
-#include "intel_drv.h"
-#include "intel_frontbuffer.h"
#include <drm/i915_drm.h>
-#include "i915_drv.h"
-#include "i915_gem_clflush.h"
-#include "intel_dsi.h"
-#include "i915_trace.h"
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_dp_helper.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_rect.h>
-#include <linux/dma_remapping.h>
-#include <linux/reservation.h>
+
+#include "i915_drv.h"
+#include "i915_gem_clflush.h"
+#include "i915_trace.h"
+#include "intel_dsi.h"
+#include "intel_drv.h"
+#include "intel_frontbuffer.h"
+#include "intel_sideband.h"
/* Primary plane formats for gen <= 3 */
static const uint32_t i8xx_primary_formats[] = {
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 11b28fca01ac..e819f75d2ab7 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -31,7 +31,9 @@
#include <linux/types.h>
#include <linux/notifier.h>
#include <linux/reboot.h>
+
#include <asm/byteorder.h>
+
#include <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
@@ -39,9 +41,11 @@
#include <drm/drm_dp_helper.h>
#include <drm/drm_edid.h>
#include <drm/drm_hdcp.h>
-#include "intel_drv.h"
#include <drm/i915_drm.h>
+
#include "i915_drv.h"
+#include "intel_drv.h"
+#include "intel_sideband.h"
#define DP_LINK_CHECK_TIMEOUT (10 * 1000)
#define DP_DPRX_ESI_LEN 14
diff --git a/drivers/gpu/drm/i915/intel_dpio_phy.c b/drivers/gpu/drm/i915/intel_dpio_phy.c
index 239434c225b1..4bea4d947826 100644
--- a/drivers/gpu/drm/i915/intel_dpio_phy.c
+++ b/drivers/gpu/drm/i915/intel_dpio_phy.c
@@ -22,6 +22,7 @@
*/
#include "intel_drv.h"
+#include "intel_sideband.h"
/**
* DOC: DPIO
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 355aa8717af2..626c6791d018 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -23,17 +23,20 @@
* Author: Jani Nikula <jani.nikula@intel.com>
*/
+#include <linux/slab.h>
+#include <linux/gpio/consumer.h>
+
#include <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_edid.h>
#include <drm/i915_drm.h>
#include <drm/drm_mipi_dsi.h>
-#include <linux/slab.h>
-#include <linux/gpio/consumer.h>
+
#include "i915_drv.h"
#include "intel_drv.h"
#include "intel_dsi.h"
+#include "intel_sideband.h"
/* return pixels in terms of txbyteclkhs */
static u16 txbyteclkhs(u16 pixels, int bpp, int lane_count,
diff --git a/drivers/gpu/drm/i915/intel_dsi_pll.c b/drivers/gpu/drm/i915/intel_dsi_pll.c
index b73336e7dcd2..ebb3dba75d06 100644
--- a/drivers/gpu/drm/i915/intel_dsi_pll.c
+++ b/drivers/gpu/drm/i915/intel_dsi_pll.c
@@ -26,9 +26,11 @@
*/
#include <linux/kernel.h>
-#include "intel_drv.h"
+
#include "i915_drv.h"
+#include "intel_drv.h"
#include "intel_dsi.h"
+#include "intel_sideband.h"
static const u16 lfsr_converts[] = {
426, 469, 234, 373, 442, 221, 110, 311, 411, /* 62 - 70 */
diff --git a/drivers/gpu/drm/i915/intel_dsi_vbt.c b/drivers/gpu/drm/i915/intel_dsi_vbt.c
index f1168b6e8592..752a6afecca2 100644
--- a/drivers/gpu/drm/i915/intel_dsi_vbt.c
+++ b/drivers/gpu/drm/i915/intel_dsi_vbt.c
@@ -24,18 +24,23 @@
*
*/
+#include <linux/gpio/consumer.h>
+#include <linux/slab.h>
+
+#include <asm/intel-mid.h>
+
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_edid.h>
#include <drm/i915_drm.h>
-#include <linux/gpio/consumer.h>
-#include <linux/slab.h>
+
#include <video/mipi_display.h>
-#include <asm/intel-mid.h>
#include <video/mipi_display.h>
+
#include "i915_drv.h"
#include "intel_drv.h"
#include "intel_dsi.h"
+#include "intel_sideband.h"
#define MIPI_TRANSFER_MODE_SHIFT 0
#define MIPI_VIRTUAL_CHANNEL_SHIFT 1
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 8c419f22fb69..ed145bafc4b2 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -30,16 +30,19 @@
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/hdmi.h>
+
#include <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_edid.h>
#include <drm/drm_hdcp.h>
#include <drm/drm_scdc_helper.h>
-#include "intel_drv.h"
#include <drm/i915_drm.h>
#include <drm/intel_lpe_audio.h>
+
#include "i915_drv.h"
+#include "intel_drv.h"
+#include "intel_sideband.h"
static struct drm_device *intel_hdmi_to_dev(struct intel_hdmi *intel_hdmi)
{
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 376c7d4ff972..1f1f0eb060c7 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -26,12 +26,15 @@
*/
#include <linux/cpufreq.h>
+#include <linux/module.h>
+
+#include <drm/drm_atomic_helper.h>
#include <drm/drm_plane_helper.h>
+
#include "i915_drv.h"
#include "intel_drv.h"
+#include "intel_sideband.h"
#include "../../../platform/x86/intel_ips.h"
-#include <linux/module.h>
-#include <drm/drm_atomic_helper.h>
/**
* DOC: RC6
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 2cc64f0fda57..5ad92fad3537 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -31,6 +31,7 @@
#include "i915_drv.h"
#include "intel_drv.h"
+#include "intel_sideband.h"
/**
* DOC: runtime pm
diff --git a/drivers/gpu/drm/i915/intel_sideband.c b/drivers/gpu/drm/i915/intel_sideband.c
index 2d4e48e9e1d5..87e34787939b 100644
--- a/drivers/gpu/drm/i915/intel_sideband.c
+++ b/drivers/gpu/drm/i915/intel_sideband.c
@@ -24,6 +24,8 @@
#include <asm/iosf_mbi.h>
+#include "intel_sideband.h"
+
#include "i915_drv.h"
#include "intel_drv.h"
diff --git a/drivers/gpu/drm/i915/intel_sideband.h b/drivers/gpu/drm/i915/intel_sideband.h
new file mode 100644
index 000000000000..46e917dd3973
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_sideband.h
@@ -0,0 +1,71 @@
+/* SPDX-License-Identifier: MIT */
+
+#ifndef _INTEL_SIDEBAND_H_
+#define _INTEL_SIDEBAND_H_
+
+#include <linux/types.h>
+
+struct drm_i915_private;
+enum pipe;
+
+enum {
+ VLV_IOSF_SB_BUNIT,
+ VLV_IOSF_SB_CCK,
+ VLV_IOSF_SB_CCU,
+ VLV_IOSF_SB_DPIO,
+ VLV_IOSF_SB_FLISDSI,
+ VLV_IOSF_SB_GPIO,
+ VLV_IOSF_SB_NC,
+ VLV_IOSF_SB_PUNIT,
+};
+
+void vlv_iosf_sb_get(struct drm_i915_private *dev_priv, unsigned long ports);
+u32 vlv_iosf_sb_read(struct drm_i915_private *dev_priv, u8 port, u32 reg);
+void vlv_iosf_sb_write(struct drm_i915_private *dev_priv, u8 port, u32 reg, u32 val);
+void vlv_iosf_sb_put(struct drm_i915_private *dev_priv, unsigned long ports);
+
+void vlv_punit_get(struct drm_i915_private *dev_priv);
+u32 vlv_punit_read(struct drm_i915_private *dev_priv, u32 addr);
+int vlv_punit_write(struct drm_i915_private *dev_priv, u32 addr, u32 val);
+void vlv_punit_put(struct drm_i915_private *dev_priv);
+
+void vlv_nc_get(struct drm_i915_private *dev_priv);
+u32 vlv_nc_read(struct drm_i915_private *dev_priv, u8 addr);
+void vlv_nc_put(struct drm_i915_private *dev_priv);
+
+void vlv_cck_get(struct drm_i915_private *dev_priv);
+u32 vlv_cck_read(struct drm_i915_private *dev_priv, u32 reg);
+void vlv_cck_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
+void vlv_cck_put(struct drm_i915_private *dev_priv);
+
+void vlv_ccu_get(struct drm_i915_private *dev_priv);
+u32 vlv_ccu_read(struct drm_i915_private *dev_priv, u32 reg);
+void vlv_ccu_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
+void vlv_ccu_put(struct drm_i915_private *dev_priv);
+
+void vlv_bunit_get(struct drm_i915_private *dev_priv);
+u32 vlv_bunit_read(struct drm_i915_private *dev_priv, u32 reg);
+void vlv_bunit_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
+void vlv_bunit_put(struct drm_i915_private *dev_priv);
+
+void vlv_dpio_get(struct drm_i915_private *dev_priv);
+u32 vlv_dpio_read(struct drm_i915_private *dev_priv, enum pipe pipe, int reg);
+void vlv_dpio_write(struct drm_i915_private *dev_priv, enum pipe pipe, int reg, u32 val);
+void vlv_dpio_put(struct drm_i915_private *dev_priv);
+
+void vlv_flisdsi_get(struct drm_i915_private *dev_priv);
+u32 vlv_flisdsi_read(struct drm_i915_private *dev_priv, u32 reg);
+void vlv_flisdsi_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
+void vlv_flisdsi_put(struct drm_i915_private *dev_priv);
+
+enum intel_sbi_destination {
+ SBI_ICLK,
+ SBI_MPHY,
+};
+
+u32 intel_sbi_read(struct drm_i915_private *dev_priv, u16 reg,
+ enum intel_sbi_destination destination);
+void intel_sbi_write(struct drm_i915_private *dev_priv, u16 reg, u32 value,
+ enum intel_sbi_destination destination);
+
+#endif /* _INTEL_SIDEBAND_H */
--
2.16.2
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH 08/10] drm/i915: Merge sbi read/write into a single accessor
2018-03-07 19:41 vlv punit and sideband tidy Chris Wilson
` (6 preceding siblings ...)
2018-03-07 19:41 ` [PATCH 07/10] drm/i915: Separate sideband declarations to intel_sideband.h Chris Wilson
@ 2018-03-07 19:42 ` Chris Wilson
2018-03-07 19:42 ` [PATCH 09/10] drm/i915: Merge sandybridge_pcode_(read|write) Chris Wilson
` (6 subsequent siblings)
14 siblings, 0 replies; 19+ messages in thread
From: Chris Wilson @ 2018-03-07 19:42 UTC (permalink / raw)
To: intel-gfx
Since intel_sideband_read and intel_sideband_write differ by only a
couple of lines (depending on whether we feed the value in or out),
merge the two into a single common accessor.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/intel_sideband.c | 93 +++++++++++++----------------------
1 file changed, 33 insertions(+), 60 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_sideband.c b/drivers/gpu/drm/i915/intel_sideband.c
index 87e34787939b..e5faebb511ae 100644
--- a/drivers/gpu/drm/i915/intel_sideband.c
+++ b/drivers/gpu/drm/i915/intel_sideband.c
@@ -309,91 +309,64 @@ void vlv_dpio_put(struct drm_i915_private *dev_priv)
}
/* SBI access */
-u32 intel_sbi_read(struct drm_i915_private *dev_priv, u16 reg,
- enum intel_sbi_destination destination)
+static int intel_sbi_rw(struct drm_i915_private *dev_priv, u16 reg,
+ enum intel_sbi_destination destination,
+ u32 *val, bool is_read)
{
- u32 value = 0;
+ u32 cmd;
lockdep_assert_held(&dev_priv->sb_lock);
- if (intel_wait_for_register(dev_priv,
- SBI_CTL_STAT, SBI_BUSY, 0,
- 100)) {
+ if (intel_wait_for_register_fw(dev_priv,
+ SBI_CTL_STAT, SBI_BUSY, 0,
+ 100)) {
DRM_ERROR("timeout waiting for SBI to become ready\n");
- return 0;
+ return -EBUSY;
}
- I915_WRITE(SBI_ADDR, (reg << 16));
- I915_WRITE(SBI_DATA, 0);
+ I915_WRITE_FW(SBI_ADDR, (u32)reg << 16);
+ I915_WRITE_FW(SBI_DATA, is_read ? 0 : *val);
if (destination == SBI_ICLK)
- value = SBI_CTL_DEST_ICLK | SBI_CTL_OP_CRRD;
+ cmd = SBI_CTL_DEST_ICLK | SBI_CTL_OP_CRRD;
else
- value = SBI_CTL_DEST_MPHY | SBI_CTL_OP_IORD;
- I915_WRITE(SBI_CTL_STAT, value | SBI_BUSY);
+ cmd = SBI_CTL_DEST_MPHY | SBI_CTL_OP_IORD;
+ if (!is_read)
+ cmd |= BIT(8);
+ I915_WRITE_FW(SBI_CTL_STAT, cmd | SBI_BUSY);
- if (intel_wait_for_register(dev_priv,
- SBI_CTL_STAT,
- SBI_BUSY,
- 0,
- 100)) {
+ if (__intel_wait_for_register_fw(dev_priv,
+ SBI_CTL_STAT, SBI_BUSY, 0,
+ 100, 100, &cmd)) {
DRM_ERROR("timeout waiting for SBI to complete read\n");
- return 0;
+ return -ETIMEDOUT;
}
- if (I915_READ(SBI_CTL_STAT) & SBI_RESPONSE_FAIL) {
+ if (cmd & SBI_RESPONSE_FAIL) {
DRM_ERROR("error during SBI read of reg %x\n", reg);
- return 0;
+ return -ENXIO;
}
- return I915_READ(SBI_DATA);
+ if (is_read)
+ *val = I915_READ_FW(SBI_DATA);
+
+ return 0;
}
-void intel_sbi_write(struct drm_i915_private *dev_priv, u16 reg, u32 value,
- enum intel_sbi_destination destination)
+u32 intel_sbi_read(struct drm_i915_private *dev_priv, u16 reg,
+ enum intel_sbi_destination destination)
{
- u32 tmp;
-
- lockdep_assert_held(&dev_priv->sb_lock);
-
- if (intel_wait_for_register(dev_priv,
- SBI_CTL_STAT, SBI_BUSY, 0,
- 100)) {
- DRM_ERROR("timeout waiting for SBI to become ready\n");
- return;
- }
+ u32 result = 0;
- I915_WRITE(SBI_ADDR, (reg << 16));
- I915_WRITE(SBI_DATA, value);
-
- if (destination == SBI_ICLK)
- tmp = SBI_CTL_DEST_ICLK | SBI_CTL_OP_CRWR;
- else
- tmp = SBI_CTL_DEST_MPHY | SBI_CTL_OP_IOWR;
- I915_WRITE(SBI_CTL_STAT, SBI_BUSY | tmp);
-
- if (intel_wait_for_register(dev_priv,
- SBI_CTL_STAT,
- SBI_BUSY,
- 0,
- 100)) {
- DRM_ERROR("timeout waiting for SBI to complete write\n");
- return;
- }
+ intel_sbi_rw(dev_priv, reg, destination, &result, true);
- if (I915_READ(SBI_CTL_STAT) & SBI_RESPONSE_FAIL) {
- DRM_ERROR("error during SBI write of %x to reg %x\n",
- value, reg);
- return;
- }
+ return result;
}
-u32 vlv_flisdsi_read(struct drm_i915_private *dev_priv, u32 reg)
+void intel_sbi_write(struct drm_i915_private *dev_priv, u16 reg, u32 value,
+ enum intel_sbi_destination destination)
{
- u32 val = 0;
- vlv_sideband_rw(dev_priv, DPIO_DEVFN, IOSF_PORT_FLISDSI, SB_CRRDDA_NP,
- reg, &val);
- return val;
+ intel_sbi_rw(dev_priv, reg, destination, &value, false);
}
void vlv_flisdsi_write(struct drm_i915_private *dev_priv, u32 reg, u32 val)
--
2.16.2
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH 09/10] drm/i915: Merge sandybridge_pcode_(read|write)
2018-03-07 19:41 vlv punit and sideband tidy Chris Wilson
` (7 preceding siblings ...)
2018-03-07 19:42 ` [PATCH 08/10] drm/i915: Merge sbi read/write into a single accessor Chris Wilson
@ 2018-03-07 19:42 ` Chris Wilson
2018-03-07 19:42 ` [PATCH 10/10] drm/i915: Move sandybride pcode access to intel_sideband.c Chris Wilson
` (5 subsequent siblings)
14 siblings, 0 replies; 19+ messages in thread
From: Chris Wilson @ 2018-03-07 19:42 UTC (permalink / raw)
To: intel-gfx
These routines are identical except in the nature of the value parameter.
For writes it is a pure in-param, but for a read, we need an out-param.
Since they differ in a single line, merge the two routines into one.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/intel_pm.c | 114 ++++++++++++++--------------------------
1 file changed, 40 insertions(+), 74 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 1f1f0eb060c7..cbebf36fdeda 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -9155,12 +9155,10 @@ void intel_init_pm(struct drm_i915_private *dev_priv)
}
}
-static inline int gen6_check_mailbox_status(struct drm_i915_private *dev_priv)
+static inline int gen6_check_mailbox_status(struct drm_i915_private *dev_priv,
+ u32 mbox)
{
- uint32_t flags =
- I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_ERROR_MASK;
-
- switch (flags) {
+ switch (mbox & GEN6_PCODE_ERROR_MASK) {
case GEN6_PCODE_SUCCESS:
return 0;
case GEN6_PCODE_UNIMPLEMENTED_CMD:
@@ -9173,17 +9171,15 @@ static inline int gen6_check_mailbox_status(struct drm_i915_private *dev_priv)
case GEN6_PCODE_TIMEOUT:
return -ETIMEDOUT;
default:
- MISSING_CASE(flags);
+ MISSING_CASE(mbox & GEN6_PCODE_ERROR_MASK);
return 0;
}
}
-static inline int gen7_check_mailbox_status(struct drm_i915_private *dev_priv)
+static inline int gen7_check_mailbox_status(struct drm_i915_private *dev_priv,
+ u32 mbox)
{
- uint32_t flags =
- I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_ERROR_MASK;
-
- switch (flags) {
+ switch (mbox & GEN6_PCODE_ERROR_MASK) {
case GEN6_PCODE_SUCCESS:
return 0;
case GEN6_PCODE_ILLEGAL_CMD:
@@ -9195,18 +9191,21 @@ static inline int gen7_check_mailbox_status(struct drm_i915_private *dev_priv)
case GEN7_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE:
return -EOVERFLOW;
default:
- MISSING_CASE(flags);
+ MISSING_CASE(mbox & GEN6_PCODE_ERROR_MASK);
return 0;
}
}
-static int __sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val)
+static int __sandybridge_pcode_rw(struct drm_i915_private *dev_priv,
+ u32 mbox, u32 *val,
+ int fast_timeout_us,
+ int slow_timeout_ms,
+ bool is_read)
{
- int status;
-
lockdep_assert_held(&dev_priv->sb_lock);
- /* GEN6_PCODE_* are outside of the forcewake domain, we can
+ /*
+ * GEN6_PCODE_* are outside of the forcewake domain, we can
* use te fw I915_READ variants to reduce the amount of work
* required when reading/writing.
*/
@@ -9220,69 +9219,36 @@ static int __sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox,
if (__intel_wait_for_register_fw(dev_priv,
GEN6_PCODE_MAILBOX, GEN6_PCODE_READY, 0,
- 500, 0, NULL))
+ fast_timeout_us,
+ slow_timeout_ms,
+ &mbox))
return -ETIMEDOUT;
- *val = I915_READ_FW(GEN6_PCODE_DATA);
- I915_WRITE_FW(GEN6_PCODE_DATA, 0);
+ if (is_read)
+ *val = I915_READ_FW(GEN6_PCODE_DATA);
if (INTEL_GEN(dev_priv) > 6)
- status = gen7_check_mailbox_status(dev_priv);
+ return gen7_check_mailbox_status(dev_priv, mbox);
else
- status = gen6_check_mailbox_status(dev_priv);
-
- return status;
+ return gen6_check_mailbox_status(dev_priv, mbox);
}
int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val)
{
- int status;
+ int err;
mutex_lock(&dev_priv->sb_lock);
- status = __sandybridge_pcode_read(dev_priv, mbox, val);
+ err = __sandybridge_pcode_rw(dev_priv, mbox, val,
+ 500, 0,
+ true);
mutex_unlock(&dev_priv->sb_lock);
- if (status) {
+ if (err) {
DRM_DEBUG_DRIVER("warning: pcode (read from mbox %x) mailbox access failed for %ps: %d\n",
- mbox, __builtin_return_address(0), status);
+ mbox, __builtin_return_address(0), err);
}
- return status;
-}
-
-static int __sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
- u32 mbox, u32 val,
- int fast_timeout_us,
- int slow_timeout_ms)
-{
- int status;
-
- /* GEN6_PCODE_* are outside of the forcewake domain, we can
- * use te fw I915_READ variants to reduce the amount of work
- * required when reading/writing.
- */
-
- if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY)
- return -EAGAIN;
-
- I915_WRITE_FW(GEN6_PCODE_DATA, val);
- I915_WRITE_FW(GEN6_PCODE_DATA1, 0);
- I915_WRITE_FW(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox);
-
- if (__intel_wait_for_register_fw(dev_priv,
- GEN6_PCODE_MAILBOX, GEN6_PCODE_READY, 0,
- fast_timeout_us, slow_timeout_ms,
- NULL))
- return -ETIMEDOUT;
-
- I915_WRITE_FW(GEN6_PCODE_DATA, 0);
-
- if (INTEL_GEN(dev_priv) > 6)
- status = gen7_check_mailbox_status(dev_priv);
- else
- status = gen6_check_mailbox_status(dev_priv);
-
- return status;
+ return err;
}
int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
@@ -9290,31 +9256,31 @@ int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
int fast_timeout_us,
int slow_timeout_ms)
{
- int status;
+ int err;
mutex_lock(&dev_priv->sb_lock);
- status = __sandybridge_pcode_write_timeout(dev_priv, mbox, val,
- fast_timeout_us,
- slow_timeout_ms);
+ err = __sandybridge_pcode_rw(dev_priv, mbox, &val,
+ fast_timeout_us, slow_timeout_ms,
+ false);
mutex_unlock(&dev_priv->sb_lock);
- if (status) {
+ if (err) {
DRM_DEBUG_DRIVER("warning: pcode (write of 0x%08x to mbox %x) mailbox access failed for %ps: %d\n",
- val, mbox, __builtin_return_address(0), status);
+ val, mbox, __builtin_return_address(0), err);
}
- return status;
+ return err;
}
static bool skl_pcode_try_request(struct drm_i915_private *dev_priv, u32 mbox,
u32 request, u32 reply_mask, u32 reply,
u32 *status)
{
- u32 val = request;
-
- *status = __sandybridge_pcode_read(dev_priv, mbox, &val);
+ *status = __sandybridge_pcode_rw(dev_priv, mbox, &request,
+ 500, 0,
+ true);
- return *status || ((val & reply_mask) == reply);
+ return *status || ((request & reply_mask) == reply);
}
/**
--
2.16.2
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 19+ messages in thread
* [PATCH 10/10] drm/i915: Move sandybride pcode access to intel_sideband.c
2018-03-07 19:41 vlv punit and sideband tidy Chris Wilson
` (8 preceding siblings ...)
2018-03-07 19:42 ` [PATCH 09/10] drm/i915: Merge sandybridge_pcode_(read|write) Chris Wilson
@ 2018-03-07 19:42 ` Chris Wilson
2018-03-07 20:18 ` ✓ Fi.CI.BAT: success for series starting with [01/10] drm/i915: Disable preemption and sleeping while using the punit sideband Patchwork
` (4 subsequent siblings)
14 siblings, 0 replies; 19+ messages in thread
From: Chris Wilson @ 2018-03-07 19:42 UTC (permalink / raw)
To: intel-gfx
sandybride_pcode is another sideband, so move it to their new home.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_drv.h | 10 --
drivers/gpu/drm/i915/intel_hdcp.c | 3 +-
drivers/gpu/drm/i915/intel_pm.c | 194 ----------------------------------
drivers/gpu/drm/i915/intel_sideband.c | 194 ++++++++++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_sideband.h | 10 ++
5 files changed, 206 insertions(+), 205 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index f421009fe6f7..9aa22d674eea 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3751,16 +3751,6 @@ intel_display_capture_error_state(struct drm_i915_private *dev_priv);
extern void intel_display_print_error_state(struct drm_i915_error_state_buf *e,
struct intel_display_error_state *error);
-int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val);
-int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv, u32 mbox,
- u32 val, int fast_timeout_us,
- int slow_timeout_ms);
-#define sandybridge_pcode_write(dev_priv, mbox, val) \
- sandybridge_pcode_write_timeout(dev_priv, mbox, val, 500, 0)
-
-int skl_pcode_request(struct drm_i915_private *dev_priv, u32 mbox, u32 request,
- u32 reply_mask, u32 reply, int timeout_base_ms);
-
/* intel_dpio_phy.c */
void bxt_port_to_phy_channel(struct drm_i915_private *dev_priv, enum port port,
enum dpio_phy *phy, enum dpio_channel *ch);
diff --git a/drivers/gpu/drm/i915/intel_hdcp.c b/drivers/gpu/drm/i915/intel_hdcp.c
index 81259a4fbdfd..18d06dde3fe5 100644
--- a/drivers/gpu/drm/i915/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/intel_hdcp.c
@@ -11,8 +11,9 @@
#include <linux/i2c.h>
#include <linux/random.h>
-#include "intel_drv.h"
#include "i915_reg.h"
+#include "intel_drv.h"
+#include "intel_sideband.h"
#define KEY_LOAD_TRIES 5
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index cbebf36fdeda..d04f4559d7da 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -9155,200 +9155,6 @@ void intel_init_pm(struct drm_i915_private *dev_priv)
}
}
-static inline int gen6_check_mailbox_status(struct drm_i915_private *dev_priv,
- u32 mbox)
-{
- switch (mbox & GEN6_PCODE_ERROR_MASK) {
- case GEN6_PCODE_SUCCESS:
- return 0;
- case GEN6_PCODE_UNIMPLEMENTED_CMD:
- return -ENODEV;
- case GEN6_PCODE_ILLEGAL_CMD:
- return -ENXIO;
- case GEN6_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE:
- case GEN7_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE:
- return -EOVERFLOW;
- case GEN6_PCODE_TIMEOUT:
- return -ETIMEDOUT;
- default:
- MISSING_CASE(mbox & GEN6_PCODE_ERROR_MASK);
- return 0;
- }
-}
-
-static inline int gen7_check_mailbox_status(struct drm_i915_private *dev_priv,
- u32 mbox)
-{
- switch (mbox & GEN6_PCODE_ERROR_MASK) {
- case GEN6_PCODE_SUCCESS:
- return 0;
- case GEN6_PCODE_ILLEGAL_CMD:
- return -ENXIO;
- case GEN7_PCODE_TIMEOUT:
- return -ETIMEDOUT;
- case GEN7_PCODE_ILLEGAL_DATA:
- return -EINVAL;
- case GEN7_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE:
- return -EOVERFLOW;
- default:
- MISSING_CASE(mbox & GEN6_PCODE_ERROR_MASK);
- return 0;
- }
-}
-
-static int __sandybridge_pcode_rw(struct drm_i915_private *dev_priv,
- u32 mbox, u32 *val,
- int fast_timeout_us,
- int slow_timeout_ms,
- bool is_read)
-{
- lockdep_assert_held(&dev_priv->sb_lock);
-
- /*
- * GEN6_PCODE_* are outside of the forcewake domain, we can
- * use te fw I915_READ variants to reduce the amount of work
- * required when reading/writing.
- */
-
- if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY)
- return -EAGAIN;
-
- I915_WRITE_FW(GEN6_PCODE_DATA, *val);
- I915_WRITE_FW(GEN6_PCODE_DATA1, 0);
- I915_WRITE_FW(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox);
-
- if (__intel_wait_for_register_fw(dev_priv,
- GEN6_PCODE_MAILBOX, GEN6_PCODE_READY, 0,
- fast_timeout_us,
- slow_timeout_ms,
- &mbox))
- return -ETIMEDOUT;
-
- if (is_read)
- *val = I915_READ_FW(GEN6_PCODE_DATA);
-
- if (INTEL_GEN(dev_priv) > 6)
- return gen7_check_mailbox_status(dev_priv, mbox);
- else
- return gen6_check_mailbox_status(dev_priv, mbox);
-}
-
-int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val)
-{
- int err;
-
- mutex_lock(&dev_priv->sb_lock);
- err = __sandybridge_pcode_rw(dev_priv, mbox, val,
- 500, 0,
- true);
- mutex_unlock(&dev_priv->sb_lock);
-
- if (err) {
- DRM_DEBUG_DRIVER("warning: pcode (read from mbox %x) mailbox access failed for %ps: %d\n",
- mbox, __builtin_return_address(0), err);
- }
-
- return err;
-}
-
-int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
- u32 mbox, u32 val,
- int fast_timeout_us,
- int slow_timeout_ms)
-{
- int err;
-
- mutex_lock(&dev_priv->sb_lock);
- err = __sandybridge_pcode_rw(dev_priv, mbox, &val,
- fast_timeout_us, slow_timeout_ms,
- false);
- mutex_unlock(&dev_priv->sb_lock);
-
- if (err) {
- DRM_DEBUG_DRIVER("warning: pcode (write of 0x%08x to mbox %x) mailbox access failed for %ps: %d\n",
- val, mbox, __builtin_return_address(0), err);
- }
-
- return err;
-}
-
-static bool skl_pcode_try_request(struct drm_i915_private *dev_priv, u32 mbox,
- u32 request, u32 reply_mask, u32 reply,
- u32 *status)
-{
- *status = __sandybridge_pcode_rw(dev_priv, mbox, &request,
- 500, 0,
- true);
-
- return *status || ((request & reply_mask) == reply);
-}
-
-/**
- * skl_pcode_request - send PCODE request until acknowledgment
- * @dev_priv: device private
- * @mbox: PCODE mailbox ID the request is targeted for
- * @request: request ID
- * @reply_mask: mask used to check for request acknowledgment
- * @reply: value used to check for request acknowledgment
- * @timeout_base_ms: timeout for polling with preemption enabled
- *
- * Keep resending the @request to @mbox until PCODE acknowledges it, PCODE
- * reports an error or an overall timeout of @timeout_base_ms+50 ms expires.
- * The request is acknowledged once the PCODE reply dword equals @reply after
- * applying @reply_mask. Polling is first attempted with preemption enabled
- * for @timeout_base_ms and if this times out for another 50 ms with
- * preemption disabled.
- *
- * Returns 0 on success, %-ETIMEDOUT in case of a timeout, <0 in case of some
- * other error as reported by PCODE.
- */
-int skl_pcode_request(struct drm_i915_private *dev_priv, u32 mbox, u32 request,
- u32 reply_mask, u32 reply, int timeout_base_ms)
-{
- u32 status;
- int ret;
-
- mutex_lock(&dev_priv->sb_lock);
-
-#define COND skl_pcode_try_request(dev_priv, mbox, request, reply_mask, reply, \
- &status)
-
- /*
- * Prime the PCODE by doing a request first. Normally it guarantees
- * that a subsequent request, at most @timeout_base_ms later, succeeds.
- * _wait_for() doesn't guarantee when its passed condition is evaluated
- * first, so send the first request explicitly.
- */
- if (COND) {
- ret = 0;
- goto out;
- }
- ret = _wait_for(COND, timeout_base_ms * 1000, 10, 10);
- if (!ret)
- goto out;
-
- /*
- * The above can time out if the number of requests was low (2 in the
- * worst case) _and_ PCODE was busy for some reason even after a
- * (queued) request and @timeout_base_ms delay. As a workaround retry
- * the poll with preemption disabled to maximize the number of
- * requests. Increase the timeout from @timeout_base_ms to 50ms to
- * account for interrupts that could reduce the number of these
- * requests, and for any quirks of the PCODE firmware that delays
- * the request completion.
- */
- DRM_DEBUG_KMS("PCODE timeout, retrying with preemption disabled\n");
- WARN_ON_ONCE(timeout_base_ms > 3);
- preempt_disable();
- ret = wait_for_atomic(COND, 50);
- preempt_enable();
-
-out:
- mutex_unlock(&dev_priv->sb_lock);
- return ret ? ret : status;
-#undef COND
-}
-
static int byt_gpu_freq(struct drm_i915_private *dev_priv, int val)
{
struct intel_rps *rps = &dev_priv->gt_pm.rps;
diff --git a/drivers/gpu/drm/i915/intel_sideband.c b/drivers/gpu/drm/i915/intel_sideband.c
index e5faebb511ae..b84cbff29a73 100644
--- a/drivers/gpu/drm/i915/intel_sideband.c
+++ b/drivers/gpu/drm/i915/intel_sideband.c
@@ -384,3 +384,197 @@ void vlv_flisdsi_put(struct drm_i915_private *dev_priv)
{
vlv_iosf_sb_put(dev_priv, BIT(VLV_IOSF_SB_FLISDSI));
}
+
+static inline int gen6_check_mailbox_status(struct drm_i915_private *dev_priv,
+ u32 mbox)
+{
+ switch (mbox & GEN6_PCODE_ERROR_MASK) {
+ case GEN6_PCODE_SUCCESS:
+ return 0;
+ case GEN6_PCODE_UNIMPLEMENTED_CMD:
+ return -ENODEV;
+ case GEN6_PCODE_ILLEGAL_CMD:
+ return -ENXIO;
+ case GEN6_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE:
+ case GEN7_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE:
+ return -EOVERFLOW;
+ case GEN6_PCODE_TIMEOUT:
+ return -ETIMEDOUT;
+ default:
+ MISSING_CASE(mbox & GEN6_PCODE_ERROR_MASK);
+ return 0;
+ }
+}
+
+static inline int gen7_check_mailbox_status(struct drm_i915_private *dev_priv,
+ u32 mbox)
+{
+ switch (mbox & GEN6_PCODE_ERROR_MASK) {
+ case GEN6_PCODE_SUCCESS:
+ return 0;
+ case GEN6_PCODE_ILLEGAL_CMD:
+ return -ENXIO;
+ case GEN7_PCODE_TIMEOUT:
+ return -ETIMEDOUT;
+ case GEN7_PCODE_ILLEGAL_DATA:
+ return -EINVAL;
+ case GEN7_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE:
+ return -EOVERFLOW;
+ default:
+ MISSING_CASE(mbox & GEN6_PCODE_ERROR_MASK);
+ return 0;
+ }
+}
+
+static int __sandybridge_pcode_rw(struct drm_i915_private *dev_priv,
+ u32 mbox, u32 *val,
+ int fast_timeout_us,
+ int slow_timeout_ms,
+ bool is_read)
+{
+ lockdep_assert_held(&dev_priv->sb_lock);
+
+ /*
+ * GEN6_PCODE_* are outside of the forcewake domain, we can
+ * use te fw I915_READ variants to reduce the amount of work
+ * required when reading/writing.
+ */
+
+ if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY)
+ return -EAGAIN;
+
+ I915_WRITE_FW(GEN6_PCODE_DATA, *val);
+ I915_WRITE_FW(GEN6_PCODE_DATA1, 0);
+ I915_WRITE_FW(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox);
+
+ if (__intel_wait_for_register_fw(dev_priv,
+ GEN6_PCODE_MAILBOX, GEN6_PCODE_READY, 0,
+ fast_timeout_us,
+ slow_timeout_ms,
+ &mbox))
+ return -ETIMEDOUT;
+
+ if (is_read)
+ *val = I915_READ_FW(GEN6_PCODE_DATA);
+
+ if (INTEL_GEN(dev_priv) > 6)
+ return gen7_check_mailbox_status(dev_priv, mbox);
+ else
+ return gen6_check_mailbox_status(dev_priv, mbox);
+}
+
+int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val)
+{
+ int err;
+
+ mutex_lock(&dev_priv->sb_lock);
+ err = __sandybridge_pcode_rw(dev_priv, mbox, val,
+ 500, 0,
+ true);
+ mutex_unlock(&dev_priv->sb_lock);
+
+ if (err) {
+ DRM_DEBUG_DRIVER("warning: pcode (read from mbox %x) mailbox access failed for %ps: %d\n",
+ mbox, __builtin_return_address(0), err);
+ }
+
+ return err;
+}
+
+int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
+ u32 mbox, u32 val,
+ int fast_timeout_us,
+ int slow_timeout_ms)
+{
+ int err;
+
+ mutex_lock(&dev_priv->sb_lock);
+ err = __sandybridge_pcode_rw(dev_priv, mbox, &val,
+ fast_timeout_us, slow_timeout_ms,
+ false);
+ mutex_unlock(&dev_priv->sb_lock);
+
+ if (err) {
+ DRM_DEBUG_DRIVER("warning: pcode (write of 0x%08x to mbox %x) mailbox access failed for %ps: %d\n",
+ val, mbox, __builtin_return_address(0), err);
+ }
+
+ return err;
+}
+
+static bool skl_pcode_try_request(struct drm_i915_private *dev_priv, u32 mbox,
+ u32 request, u32 reply_mask, u32 reply,
+ u32 *status)
+{
+ *status = __sandybridge_pcode_rw(dev_priv, mbox, &request,
+ 500, 0,
+ true);
+
+ return *status || ((request & reply_mask) == reply);
+}
+
+/**
+ * skl_pcode_request - send PCODE request until acknowledgment
+ * @dev_priv: device private
+ * @mbox: PCODE mailbox ID the request is targeted for
+ * @request: request ID
+ * @reply_mask: mask used to check for request acknowledgment
+ * @reply: value used to check for request acknowledgment
+ * @timeout_base_ms: timeout for polling with preemption enabled
+ *
+ * Keep resending the @request to @mbox until PCODE acknowledges it, PCODE
+ * reports an error or an overall timeout of @timeout_base_ms+50 ms expires.
+ * The request is acknowledged once the PCODE reply dword equals @reply after
+ * applying @reply_mask. Polling is first attempted with preemption enabled
+ * for @timeout_base_ms and if this times out for another 50 ms with
+ * preemption disabled.
+ *
+ * Returns 0 on success, %-ETIMEDOUT in case of a timeout, <0 in case of some
+ * other error as reported by PCODE.
+ */
+int skl_pcode_request(struct drm_i915_private *dev_priv, u32 mbox, u32 request,
+ u32 reply_mask, u32 reply, int timeout_base_ms)
+{
+ u32 status;
+ int ret;
+
+ mutex_lock(&dev_priv->sb_lock);
+
+#define COND skl_pcode_try_request(dev_priv, mbox, request, reply_mask, reply, \
+ &status)
+
+ /*
+ * Prime the PCODE by doing a request first. Normally it guarantees
+ * that a subsequent request, at most @timeout_base_ms later, succeeds.
+ * _wait_for() doesn't guarantee when its passed condition is evaluated
+ * first, so send the first request explicitly.
+ */
+ if (COND) {
+ ret = 0;
+ goto out;
+ }
+ ret = _wait_for(COND, timeout_base_ms * 1000, 10, 10);
+ if (!ret)
+ goto out;
+
+ /*
+ * The above can time out if the number of requests was low (2 in the
+ * worst case) _and_ PCODE was busy for some reason even after a
+ * (queued) request and @timeout_base_ms delay. As a workaround retry
+ * the poll with preemption disabled to maximize the number of
+ * requests. Increase the timeout from @timeout_base_ms to 50ms to
+ * account for interrupts that could reduce the number of these
+ * requests, and for any quirks of the PCODE firmware that delays
+ * the request completion.
+ */
+ DRM_DEBUG_KMS("PCODE timeout, retrying with preemption disabled\n");
+ WARN_ON_ONCE(timeout_base_ms > 3);
+ preempt_disable();
+ ret = wait_for_atomic(COND, 50);
+ preempt_enable();
+
+out:
+ mutex_unlock(&dev_priv->sb_lock);
+ return ret ? ret : status;
+#undef COND
+}
diff --git a/drivers/gpu/drm/i915/intel_sideband.h b/drivers/gpu/drm/i915/intel_sideband.h
index 46e917dd3973..684d6cd5df30 100644
--- a/drivers/gpu/drm/i915/intel_sideband.h
+++ b/drivers/gpu/drm/i915/intel_sideband.h
@@ -68,4 +68,14 @@ u32 intel_sbi_read(struct drm_i915_private *dev_priv, u16 reg,
void intel_sbi_write(struct drm_i915_private *dev_priv, u16 reg, u32 value,
enum intel_sbi_destination destination);
+int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val);
+int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv, u32 mbox,
+ u32 val, int fast_timeout_us,
+ int slow_timeout_ms);
+#define sandybridge_pcode_write(dev_priv, mbox, val) \
+ sandybridge_pcode_write_timeout(dev_priv, mbox, val, 500, 0)
+
+int skl_pcode_request(struct drm_i915_private *dev_priv, u32 mbox, u32 request,
+ u32 reply_mask, u32 reply, int timeout_base_ms);
+
#endif /* _INTEL_SIDEBAND_H */
--
2.16.2
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^ permalink raw reply related [flat|nested] 19+ messages in thread
* ✓ Fi.CI.BAT: success for series starting with [01/10] drm/i915: Disable preemption and sleeping while using the punit sideband
2018-03-07 19:41 vlv punit and sideband tidy Chris Wilson
` (9 preceding siblings ...)
2018-03-07 19:42 ` [PATCH 10/10] drm/i915: Move sandybride pcode access to intel_sideband.c Chris Wilson
@ 2018-03-07 20:18 ` Patchwork
2018-03-07 20:39 ` vlv punit and sideband tidy Rogozhkin, Dmitry V
` (3 subsequent siblings)
14 siblings, 0 replies; 19+ messages in thread
From: Patchwork @ 2018-03-07 20:18 UTC (permalink / raw)
To: Chris Wilson; +Cc: intel-gfx
== Series Details ==
Series: series starting with [01/10] drm/i915: Disable preemption and sleeping while using the punit sideband
URL : https://patchwork.freedesktop.org/series/39555/
State : success
== Summary ==
Series 39555v1 series starting with [01/10] drm/i915: Disable preemption and sleeping while using the punit sideband
https://patchwork.freedesktop.org/api/1.0/series/39555/revisions/1/mbox/
fi-bdw-5557u total:288 pass:267 dwarn:0 dfail:0 fail:0 skip:21 time:423s
fi-bdw-gvtdvm total:288 pass:264 dwarn:0 dfail:0 fail:0 skip:24 time:425s
fi-blb-e6850 total:288 pass:223 dwarn:1 dfail:0 fail:0 skip:64 time:370s
fi-bsw-n3050 total:288 pass:242 dwarn:0 dfail:0 fail:0 skip:46 time:511s
fi-bwr-2160 total:288 pass:183 dwarn:0 dfail:0 fail:0 skip:105 time:278s
fi-bxt-dsi total:288 pass:258 dwarn:0 dfail:0 fail:0 skip:30 time:486s
fi-bxt-j4205 total:288 pass:259 dwarn:0 dfail:0 fail:0 skip:29 time:497s
fi-byt-j1900 total:288 pass:253 dwarn:0 dfail:0 fail:0 skip:35 time:481s
fi-byt-n2820 total:288 pass:249 dwarn:0 dfail:0 fail:0 skip:39 time:469s
fi-cfl-8700k total:288 pass:260 dwarn:0 dfail:0 fail:0 skip:28 time:403s
fi-cfl-s2 total:288 pass:262 dwarn:0 dfail:0 fail:0 skip:26 time:579s
fi-cfl-u total:288 pass:262 dwarn:0 dfail:0 fail:0 skip:26 time:509s
fi-elk-e7500 total:288 pass:229 dwarn:0 dfail:0 fail:0 skip:59 time:408s
fi-gdg-551 total:288 pass:179 dwarn:0 dfail:0 fail:1 skip:108 time:289s
fi-glk-1 total:288 pass:260 dwarn:0 dfail:0 fail:0 skip:28 time:513s
fi-hsw-4770 total:288 pass:261 dwarn:0 dfail:0 fail:0 skip:27 time:395s
fi-ilk-650 total:288 pass:228 dwarn:0 dfail:0 fail:0 skip:60 time:407s
fi-ivb-3520m total:288 pass:259 dwarn:0 dfail:0 fail:0 skip:29 time:466s
fi-ivb-3770 total:288 pass:255 dwarn:0 dfail:0 fail:0 skip:33 time:417s
fi-kbl-7500u total:288 pass:263 dwarn:1 dfail:0 fail:0 skip:24 time:469s
fi-kbl-7567u total:288 pass:268 dwarn:0 dfail:0 fail:0 skip:20 time:458s
fi-kbl-r total:288 pass:261 dwarn:0 dfail:0 fail:0 skip:27 time:510s
fi-pnv-d510 total:288 pass:222 dwarn:1 dfail:0 fail:0 skip:65 time:588s
fi-skl-6260u total:288 pass:268 dwarn:0 dfail:0 fail:0 skip:20 time:429s
fi-skl-6600u total:288 pass:261 dwarn:0 dfail:0 fail:0 skip:27 time:525s
fi-skl-6700hq total:288 pass:262 dwarn:0 dfail:0 fail:0 skip:26 time:533s
fi-skl-6700k2 total:288 pass:264 dwarn:0 dfail:0 fail:0 skip:24 time:497s
fi-skl-6770hq total:288 pass:268 dwarn:0 dfail:0 fail:0 skip:20 time:485s
fi-skl-guc total:288 pass:260 dwarn:0 dfail:0 fail:0 skip:28 time:423s
fi-skl-gvtdvm total:288 pass:265 dwarn:0 dfail:0 fail:0 skip:23 time:428s
fi-snb-2520m total:288 pass:248 dwarn:0 dfail:0 fail:0 skip:40 time:521s
fi-snb-2600 total:288 pass:248 dwarn:0 dfail:0 fail:0 skip:40 time:397s
73d5ac42e64ff83e10989dd5fe0cd82070a78d3b drm-tip: 2018y-03m-07d-18h-48m-39s UTC integration manifest
a7a9e1e325b4 drm/i915: Move sandybride pcode access to intel_sideband.c
d12473821321 drm/i915: Merge sandybridge_pcode_(read|write)
b10cb74b0527 drm/i915: Merge sbi read/write into a single accessor
63631b4f5471 drm/i915: Separate sideband declarations to intel_sideband.h
5d12dc0c771a drm/i915: Replace pcu_lock with sb_lock
1ef581a7e9ce Revert "drm/i915: Avoid tweaking evaluation thresholds on Baytrail v3"
a87d0c97d0bd drm/i915: Reduce RPS update frequency on Valleyview/Cherryview
03181469e7e9 drm/i915: Lift sideband locking for vlv_punit_(read|write)
2eff43aedb58 drm/i915: Lift acquiring the vlv punit magic to a common sb-get
8cbb0d7b87e5 drm/i915: Disable preemption and sleeping while using the punit sideband
== Logs ==
For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_8262/issues.html
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^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: vlv punit and sideband tidy
2018-03-07 19:41 vlv punit and sideband tidy Chris Wilson
` (10 preceding siblings ...)
2018-03-07 20:18 ` ✓ Fi.CI.BAT: success for series starting with [01/10] drm/i915: Disable preemption and sleeping while using the punit sideband Patchwork
@ 2018-03-07 20:39 ` Rogozhkin, Dmitry V
2018-03-08 16:49 ` Chris Wilson
2018-03-07 21:02 ` ✗ Fi.CI.IGT: warning for series starting with [01/10] drm/i915: Disable preemption and sleeping while using the punit sideband Patchwork
` (2 subsequent siblings)
14 siblings, 1 reply; 19+ messages in thread
From: Rogozhkin, Dmitry V @ 2018-03-07 20:39 UTC (permalink / raw)
To: intel-gfx, chris
On Wed, 2018-03-07 at 19:41 +0000, Chris Wilson wrote:
> Mika
> believes that if we keep the cpu in C0 whilst the gpu is busy, then
> it
> behaves much better -- but that is a very tough sell
Chris, Mika, I wonder does i915 driver tries to keep CPU in C0 at the
moment already or you just consider this? If it is doing anything to
CPU while gpu is busy, could you, please, clarify what exactly and
point me to the code/key patches? Please, answer from BDW/SKL gen
perspective rather than VLV.
Dmitry.
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^ permalink raw reply [flat|nested] 19+ messages in thread
* ✗ Fi.CI.IGT: warning for series starting with [01/10] drm/i915: Disable preemption and sleeping while using the punit sideband
2018-03-07 19:41 vlv punit and sideband tidy Chris Wilson
` (11 preceding siblings ...)
2018-03-07 20:39 ` vlv punit and sideband tidy Rogozhkin, Dmitry V
@ 2018-03-07 21:02 ` Patchwork
2018-03-08 20:38 ` ✓ Fi.CI.BAT: success for series starting with [01/10] drm/i915: Disable preemption and sleeping while using the punit sideband (rev2) Patchwork
2018-03-09 1:23 ` ✓ Fi.CI.IGT: " Patchwork
14 siblings, 0 replies; 19+ messages in thread
From: Patchwork @ 2018-03-07 21:02 UTC (permalink / raw)
To: Chris Wilson; +Cc: intel-gfx
== Series Details ==
Series: series starting with [01/10] drm/i915: Disable preemption and sleeping while using the punit sideband
URL : https://patchwork.freedesktop.org/series/39555/
State : warning
== Summary ==
---- Possible new issues:
Test kms_frontbuffer_tracking:
Subgroup fbc-2p-primscrn-spr-indfb-draw-mmap-wc:
pass -> SKIP (shard-hsw)
---- Known issues:
Test gem_eio:
Subgroup in-flight-contexts:
pass -> INCOMPLETE (shard-apl) fdo#105341 +1
Test kms_atomic_transition:
Subgroup 1x-modeset-transitions-fencing:
pass -> FAIL (shard-apl) fdo#103207
Test kms_chv_cursor_fail:
Subgroup pipe-b-64x64-bottom-edge:
dmesg-warn -> PASS (shard-snb) fdo#105185 +4
Test kms_flip:
Subgroup 2x-plain-flip-fb-recreate-interruptible:
fail -> PASS (shard-hsw) fdo#100368 +1
Test kms_frontbuffer_tracking:
Subgroup fbc-1p-primscrn-pri-indfb-draw-render:
pass -> FAIL (shard-snb) fdo#101623
Test kms_vblank:
Subgroup pipe-a-accuracy-idle:
pass -> FAIL (shard-hsw) fdo#102583
fdo#105341 https://bugs.freedesktop.org/show_bug.cgi?id=105341
fdo#103207 https://bugs.freedesktop.org/show_bug.cgi?id=103207
fdo#105185 https://bugs.freedesktop.org/show_bug.cgi?id=105185
fdo#100368 https://bugs.freedesktop.org/show_bug.cgi?id=100368
fdo#101623 https://bugs.freedesktop.org/show_bug.cgi?id=101623
fdo#102583 https://bugs.freedesktop.org/show_bug.cgi?id=102583
shard-apl total:3381 pass:1777 dwarn:3 dfail:0 fail:8 skip:1591 time:11918s
shard-hsw total:3467 pass:1769 dwarn:1 dfail:0 fail:4 skip:1692 time:11894s
shard-snb total:3467 pass:1361 dwarn:2 dfail:0 fail:3 skip:2101 time:6970s
Blacklisted hosts:
shard-kbl total:3316 pass:1821 dwarn:19 dfail:0 fail:8 skip:1466 time:8725s
== Logs ==
For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_8262/shards.html
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Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: [06/10] drm/i915: Replace pcu_lock with sb_lock
2018-03-07 19:41 ` [PATCH 06/10] drm/i915: Replace pcu_lock with sb_lock Chris Wilson
@ 2018-03-08 8:06 ` Hans de Goede
2018-03-08 19:49 ` [PATCH v2] " Chris Wilson
1 sibling, 0 replies; 19+ messages in thread
From: Hans de Goede @ 2018-03-08 8:06 UTC (permalink / raw)
To: Chris Wilson, intel-gfx
Hi Chris,
Thank you for your work on this. I've 2 small remarks inline.
On 07-03-18 20:41, Chris Wilson wrote:
> We now have two locks for sideband access. The general one covering
> sideband access across all generation, sb_lock, and a specific one
> covering sideband access via the punit on vlv/chv. After lifting the
> sb_lock around the punit into the callers, the pcu_lock is now redudant
> and can be separated from its other use to regulate RPS (essentially
> giving RPS a lock all of its own).
>
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> ---
> drivers/gpu/drm/i915/i915_debugfs.c | 55 +++++---------
> drivers/gpu/drm/i915/i915_drv.h | 10 +--
> drivers/gpu/drm/i915/i915_irq.c | 4 +-
> drivers/gpu/drm/i915/i915_sysfs.c | 40 +++++-----
> drivers/gpu/drm/i915/intel_cdclk.c | 28 -------
> drivers/gpu/drm/i915/intel_display.c | 6 --
> drivers/gpu/drm/i915/intel_hdcp.c | 2 -
> drivers/gpu/drm/i915/intel_pm.c | 127 +++++++++++++++-----------------
> drivers/gpu/drm/i915/intel_runtime_pm.c | 8 --
> drivers/gpu/drm/i915/intel_sideband.c | 4 -
> 10 files changed, 104 insertions(+), 180 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> index 20a6c00a7365..82b8bfe2940c 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -1074,8 +1074,6 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
> } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
> u32 rpmodectl, freq_sts;
>
> - mutex_lock(&dev_priv->pcu_lock);
> -
> rpmodectl = I915_READ(GEN6_RP_CONTROL);
> seq_printf(m, "Video Turbo Mode: %s\n",
> yesno(rpmodectl & GEN6_RP_MEDIA_TURBO));
> @@ -1110,7 +1108,6 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
> seq_printf(m,
> "efficient (RPe) frequency: %d MHz\n",
> intel_gpu_freq(dev_priv, rps->efficient_freq));
> - mutex_unlock(&dev_priv->pcu_lock);
> } else if (INTEL_GEN(dev_priv) >= 6) {
> u32 rp_state_limits;
> u32 gt_perf_status;
> @@ -1525,12 +1522,9 @@ static int gen6_drpc_info(struct seq_file *m)
> gen9_powergate_status = I915_READ(GEN9_PWRGT_DOMAIN_STATUS);
> }
>
> - if (INTEL_GEN(dev_priv) <= 7) {
> - mutex_lock(&dev_priv->pcu_lock);
> + if (INTEL_GEN(dev_priv) <= 7)
> sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS,
> &rc6vids);
> - mutex_unlock(&dev_priv->pcu_lock);
> - }
>
> seq_printf(m, "RC1e Enabled: %s\n",
> yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
> @@ -1799,30 +1793,24 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused)
> {
> struct drm_i915_private *dev_priv = node_to_i915(m->private);
> struct intel_rps *rps = &dev_priv->gt_pm.rps;
> - int ret = 0;
> int gpu_freq, ia_freq;
> unsigned int max_gpu_freq, min_gpu_freq;
>
> if (!HAS_LLC(dev_priv))
> return -ENODEV;
>
> - intel_runtime_pm_get(dev_priv);
> -
> - ret = mutex_lock_interruptible(&dev_priv->pcu_lock);
> - if (ret)
> - goto out;
> + min_gpu_freq = rps->min_freq;
> + max_gpu_freq = rps->max_freq;
>
> if (IS_GEN9_BC(dev_priv) || IS_CANNONLAKE(dev_priv)) {
> /* Convert GT frequency to 50 HZ units */
> - min_gpu_freq = rps->min_freq_softlimit / GEN9_FREQ_SCALER;
> - max_gpu_freq = rps->max_freq_softlimit / GEN9_FREQ_SCALER;
> - } else {
> - min_gpu_freq = rps->min_freq_softlimit;
> - max_gpu_freq = rps->max_freq_softlimit;
> + min_gpu_freq /= GEN9_FREQ_SCALER;
> + max_gpu_freq /= GEN9_FREQ_SCALER;
> }
>
You are replacing rps->min_freq_softlimit with rps->min_freq here (and same for max)
if this is intentional I think this should be split out into a separate patch.
> seq_puts(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\tEffective Ring freq (MHz)\n");
>
> + intel_runtime_pm_get(dev_priv);
> for (gpu_freq = min_gpu_freq; gpu_freq <= max_gpu_freq; gpu_freq++) {
> ia_freq = gpu_freq;
> sandybridge_pcode_read(dev_priv,
> @@ -1836,12 +1824,9 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused)
> ((ia_freq >> 0) & 0xff) * 100,
> ((ia_freq >> 8) & 0xff) * 100);
> }
> -
> - mutex_unlock(&dev_priv->pcu_lock);
> -
> -out:
> intel_runtime_pm_put(dev_priv);
> - return ret;
> +
> + return 0;
> }
>
> static int i915_opregion(struct seq_file *m, void *unused)
> @@ -4169,7 +4154,7 @@ i915_max_freq_set(void *data, u64 val)
>
> DRM_DEBUG_DRIVER("Manually setting max freq to %llu\n", val);
>
> - ret = mutex_lock_interruptible(&dev_priv->pcu_lock);
> + ret = mutex_lock_interruptible(&rps->lock);
> if (ret)
> return ret;
>
> @@ -4182,8 +4167,8 @@ i915_max_freq_set(void *data, u64 val)
> hw_min = rps->min_freq;
>
> if (val < hw_min || val > hw_max || val < rps->min_freq_softlimit) {
> - mutex_unlock(&dev_priv->pcu_lock);
> - return -EINVAL;
> + ret = -EINVAL;
> + goto unlock;
> }
>
> rps->max_freq_softlimit = val;
> @@ -4191,9 +4176,9 @@ i915_max_freq_set(void *data, u64 val)
> if (intel_set_rps(dev_priv, val))
> DRM_DEBUG_DRIVER("failed to update RPS to new softlimit\n");
>
> - mutex_unlock(&dev_priv->pcu_lock);
> -
> - return 0;
> +unlock:
> + mutex_unlock(&rps->lock);
> + return ret;
> }
>
> DEFINE_SIMPLE_ATTRIBUTE(i915_max_freq_fops,
> @@ -4225,7 +4210,7 @@ i915_min_freq_set(void *data, u64 val)
>
> DRM_DEBUG_DRIVER("Manually setting min freq to %llu\n", val);
>
> - ret = mutex_lock_interruptible(&dev_priv->pcu_lock);
> + ret = mutex_lock_interruptible(&rps->lock);
> if (ret)
> return ret;
>
> @@ -4239,8 +4224,8 @@ i915_min_freq_set(void *data, u64 val)
>
> if (val < hw_min ||
> val > hw_max || val > rps->max_freq_softlimit) {
> - mutex_unlock(&dev_priv->pcu_lock);
> - return -EINVAL;
> + ret = -EINVAL;
> + goto unlock;
> }
>
> rps->min_freq_softlimit = val;
> @@ -4248,9 +4233,9 @@ i915_min_freq_set(void *data, u64 val)
> if (intel_set_rps(dev_priv, val))
> DRM_DEBUG_DRIVER("failed to update RPS to new softlimit\n");
>
> - mutex_unlock(&dev_priv->pcu_lock);
> -
> - return 0;
> +unlock:
> + mutex_unlock(&rps->lock);
> + return ret;
> }
>
> DEFINE_SIMPLE_ATTRIBUTE(i915_min_freq_fops,
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index afc89a8f43e8..61df8c338e20 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -900,6 +900,8 @@ struct intel_rps_ei {
> };
>
> struct intel_rps {
> + struct mutex lock;
> +
> /*
> * work, interrupts_enabled and pm_iir are protected by
> * dev_priv->irq_lock
> @@ -2054,14 +2056,6 @@ struct drm_i915_private {
> /* Cannot be determined by PCIID. You must always read a register. */
> u32 edram_cap;
>
> - /*
> - * Protects RPS/RC6 register access and PCU communication.
> - * Must be taken after struct_mutex if nested. Note that
> - * this lock may be held for long periods of time when
> - * talking to hw - so only take it when talking to hw!
> - */
> - struct mutex pcu_lock;
> -
> /* gen6+ GT PM state */
> struct intel_gen6_power_mgmt gt_pm;
>
> diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
> index 633c18785c1e..c291a8edfcb9 100644
> --- a/drivers/gpu/drm/i915/i915_irq.c
> +++ b/drivers/gpu/drm/i915/i915_irq.c
> @@ -1204,7 +1204,7 @@ static void gen6_pm_rps_work(struct work_struct *work)
> if ((pm_iir & dev_priv->pm_rps_events) == 0 && !client_boost)
> goto out;
>
> - mutex_lock(&dev_priv->pcu_lock);
> + mutex_lock(&rps->lock);
>
> pm_iir |= vlv_wa_c0_ei(dev_priv, pm_iir);
>
> @@ -1258,7 +1258,7 @@ static void gen6_pm_rps_work(struct work_struct *work)
> rps->last_adj = 0;
> }
>
> - mutex_unlock(&dev_priv->pcu_lock);
> + mutex_unlock(&rps->lock);
>
> out:
> /* Make sure not to corrupt PMIMR state used by ringbuffer on GEN6 */
> diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
> index 17b20a34e99f..035b2fc72bd1 100644
> --- a/drivers/gpu/drm/i915/i915_sysfs.c
> +++ b/drivers/gpu/drm/i915/i915_sysfs.c
> @@ -262,7 +262,6 @@ static ssize_t gt_act_freq_mhz_show(struct device *kdev,
>
> intel_runtime_pm_get(dev_priv);
>
> - mutex_lock(&dev_priv->pcu_lock);
> if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
> vlv_punit_get(dev_priv);
> freq = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
> @@ -272,7 +271,6 @@ static ssize_t gt_act_freq_mhz_show(struct device *kdev,
> } else {
> freq = intel_get_cagf(dev_priv, I915_READ(GEN6_RPSTAT1));
> }
> - mutex_unlock(&dev_priv->pcu_lock);
>
> intel_runtime_pm_put(dev_priv);
>
> @@ -304,6 +302,7 @@ static ssize_t gt_boost_freq_mhz_store(struct device *kdev,
> {
> struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev);
> struct intel_rps *rps = &dev_priv->gt_pm.rps;
> + bool boost = false;
> u32 val;
> ssize_t ret;
>
> @@ -316,9 +315,14 @@ static ssize_t gt_boost_freq_mhz_store(struct device *kdev,
> if (val < rps->min_freq || val > rps->max_freq)
> return -EINVAL;
>
> - mutex_lock(&dev_priv->pcu_lock);
> - rps->boost_freq = val;
> - mutex_unlock(&dev_priv->pcu_lock);
> + mutex_lock(&rps->lock);
> + if (val != rps->boost_freq) {
> + rps->boost_freq = val;
> + boost = atomic_read(&rps->num_waiters);
> + }
> + mutex_unlock(&rps->lock);
> + if (boost)
> + schedule_work(&rps->work);
This schedule work is new here, please put it in a separate patch
with a commit message explaining why it is added.
> return count;
> }
> @@ -356,17 +360,14 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
> return ret;
>
> intel_runtime_pm_get(dev_priv);
> -
> - mutex_lock(&dev_priv->pcu_lock);
> + mutex_lock(&rps->lock);
>
> val = intel_freq_opcode(dev_priv, val);
> -
> if (val < rps->min_freq ||
> val > rps->max_freq ||
> val < rps->min_freq_softlimit) {
> - mutex_unlock(&dev_priv->pcu_lock);
> - intel_runtime_pm_put(dev_priv);
> - return -EINVAL;
> + ret = -EINVAL;
> + goto unlock;
> }
>
> if (val > rps->rp0_freq)
> @@ -384,8 +385,8 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
> * frequency request may be unchanged. */
> ret = intel_set_rps(dev_priv, val);
>
> - mutex_unlock(&dev_priv->pcu_lock);
> -
> +unlock:
> + mutex_unlock(&rps->lock);
> intel_runtime_pm_put(dev_priv);
>
> return ret ?: count;
> @@ -414,17 +415,14 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
> return ret;
>
> intel_runtime_pm_get(dev_priv);
> -
> - mutex_lock(&dev_priv->pcu_lock);
> + mutex_lock(&rps->lock);
>
> val = intel_freq_opcode(dev_priv, val);
> -
> if (val < rps->min_freq ||
> val > rps->max_freq ||
> val > rps->max_freq_softlimit) {
> - mutex_unlock(&dev_priv->pcu_lock);
> - intel_runtime_pm_put(dev_priv);
> - return -EINVAL;
> + ret = -EINVAL;
> + goto unlock;
> }
>
> rps->min_freq_softlimit = val;
> @@ -438,8 +436,8 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
> * frequency request may be unchanged. */
> ret = intel_set_rps(dev_priv, val);
>
> - mutex_unlock(&dev_priv->pcu_lock);
> -
> +unlock:
> + mutex_unlock(&rps->lock);
> intel_runtime_pm_put(dev_priv);
>
> return ret ?: count;
> diff --git a/drivers/gpu/drm/i915/intel_cdclk.c b/drivers/gpu/drm/i915/intel_cdclk.c
> index e53e8c36a591..b77589d9fb2c 100644
> --- a/drivers/gpu/drm/i915/intel_cdclk.c
> +++ b/drivers/gpu/drm/i915/intel_cdclk.c
> @@ -461,7 +461,6 @@ static void vlv_get_cdclk(struct drm_i915_private *dev_priv,
> {
> u32 val;
>
> - mutex_lock(&dev_priv->pcu_lock);
> vlv_iosf_sb_get(dev_priv,
> BIT(VLV_IOSF_SB_CCK) | BIT(VLV_IOSF_SB_PUNIT));
>
> @@ -474,7 +473,6 @@ static void vlv_get_cdclk(struct drm_i915_private *dev_priv,
>
> vlv_iosf_sb_put(dev_priv,
> BIT(VLV_IOSF_SB_CCK) | BIT(VLV_IOSF_SB_PUNIT));
> - mutex_unlock(&dev_priv->pcu_lock);
>
> if (IS_VALLEYVIEW(dev_priv))
> cdclk_state->voltage_level = (val & DSPFREQGUAR_MASK) >>
> @@ -551,7 +549,6 @@ static void vlv_set_cdclk(struct drm_i915_private *dev_priv,
> BIT(VLV_IOSF_SB_BUNIT) |
> BIT(VLV_IOSF_SB_PUNIT));
>
> - mutex_lock(&dev_priv->pcu_lock);
> val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
> val &= ~DSPFREQGUAR_MASK;
> val |= (cmd << DSPFREQGUAR_SHIFT);
> @@ -561,7 +558,6 @@ static void vlv_set_cdclk(struct drm_i915_private *dev_priv,
> 50)) {
> DRM_ERROR("timed out waiting for CDclk change\n");
> }
> - mutex_unlock(&dev_priv->pcu_lock);
>
> if (cdclk == 400000) {
> u32 divider;
> @@ -632,7 +628,6 @@ static void chv_set_cdclk(struct drm_i915_private *dev_priv,
> */
> intel_display_power_get(dev_priv, POWER_DOMAIN_PIPE_A);
>
> - mutex_lock(&dev_priv->pcu_lock);
> vlv_punit_get(dev_priv);
>
> val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
> @@ -646,7 +641,6 @@ static void chv_set_cdclk(struct drm_i915_private *dev_priv,
> }
>
> vlv_punit_put(dev_priv);
> - mutex_unlock(&dev_priv->pcu_lock);
>
> intel_update_cdclk(dev_priv);
>
> @@ -724,10 +718,8 @@ static void bdw_set_cdclk(struct drm_i915_private *dev_priv,
> "trying to change cdclk frequency with cdclk not enabled\n"))
> return;
>
> - mutex_lock(&dev_priv->pcu_lock);
> ret = sandybridge_pcode_write(dev_priv,
> BDW_PCODE_DISPLAY_FREQ_CHANGE_REQ, 0x0);
> - mutex_unlock(&dev_priv->pcu_lock);
> if (ret) {
> DRM_ERROR("failed to inform pcode about cdclk change\n");
> return;
> @@ -776,10 +768,8 @@ static void bdw_set_cdclk(struct drm_i915_private *dev_priv,
> LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
> DRM_ERROR("Switching back to LCPLL failed\n");
>
> - mutex_lock(&dev_priv->pcu_lock);
> sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ,
> cdclk_state->voltage_level);
> - mutex_unlock(&dev_priv->pcu_lock);
>
> I915_WRITE(CDCLK_FREQ, DIV_ROUND_CLOSEST(cdclk, 1000) - 1);
>
> @@ -1007,12 +997,10 @@ static void skl_set_cdclk(struct drm_i915_private *dev_priv,
> u32 freq_select, cdclk_ctl;
> int ret;
>
> - mutex_lock(&dev_priv->pcu_lock);
> ret = skl_pcode_request(dev_priv, SKL_PCODE_CDCLK_CONTROL,
> SKL_CDCLK_PREPARE_FOR_CHANGE,
> SKL_CDCLK_READY_FOR_CHANGE,
> SKL_CDCLK_READY_FOR_CHANGE, 3);
> - mutex_unlock(&dev_priv->pcu_lock);
> if (ret) {
> DRM_ERROR("Failed to inform PCU about cdclk change (%d)\n",
> ret);
> @@ -1076,10 +1064,8 @@ static void skl_set_cdclk(struct drm_i915_private *dev_priv,
> POSTING_READ(CDCLK_CTL);
>
> /* inform PCU of the change */
> - mutex_lock(&dev_priv->pcu_lock);
> sandybridge_pcode_write(dev_priv, SKL_PCODE_CDCLK_CONTROL,
> cdclk_state->voltage_level);
> - mutex_unlock(&dev_priv->pcu_lock);
>
> intel_update_cdclk(dev_priv);
> }
> @@ -1391,12 +1377,9 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
> * requires us to wait up to 150usec, but that leads to timeouts;
> * the 2ms used here is based on experiment.
> */
> - mutex_lock(&dev_priv->pcu_lock);
> ret = sandybridge_pcode_write_timeout(dev_priv,
> HSW_PCODE_DE_WRITE_FREQ_REQ,
> 0x80000000, 150, 2);
> - mutex_unlock(&dev_priv->pcu_lock);
> -
> if (ret) {
> DRM_ERROR("PCode CDCLK freq change notify failed (err %d, freq %d)\n",
> ret, cdclk);
> @@ -1424,7 +1407,6 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
> val |= BXT_CDCLK_SSA_PRECHARGE_ENABLE;
> I915_WRITE(CDCLK_CTL, val);
>
> - mutex_lock(&dev_priv->pcu_lock);
> /*
> * The timeout isn't specified, the 2ms used here is based on
> * experiment.
> @@ -1434,8 +1416,6 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
> ret = sandybridge_pcode_write_timeout(dev_priv,
> HSW_PCODE_DE_WRITE_FREQ_REQ,
> cdclk_state->voltage_level, 150, 2);
> - mutex_unlock(&dev_priv->pcu_lock);
> -
> if (ret) {
> DRM_ERROR("PCode CDCLK freq set failed, (err %d, freq %d)\n",
> ret, cdclk);
> @@ -1673,12 +1653,10 @@ static void cnl_set_cdclk(struct drm_i915_private *dev_priv,
> u32 val, divider;
> int ret;
>
> - mutex_lock(&dev_priv->pcu_lock);
> ret = skl_pcode_request(dev_priv, SKL_PCODE_CDCLK_CONTROL,
> SKL_CDCLK_PREPARE_FOR_CHANGE,
> SKL_CDCLK_READY_FOR_CHANGE,
> SKL_CDCLK_READY_FOR_CHANGE, 3);
> - mutex_unlock(&dev_priv->pcu_lock);
> if (ret) {
> DRM_ERROR("Failed to inform PCU about cdclk change (%d)\n",
> ret);
> @@ -1715,10 +1693,8 @@ static void cnl_set_cdclk(struct drm_i915_private *dev_priv,
> I915_WRITE(CDCLK_CTL, val);
>
> /* inform PCU of the change */
> - mutex_lock(&dev_priv->pcu_lock);
> sandybridge_pcode_write(dev_priv, SKL_PCODE_CDCLK_CONTROL,
> cdclk_state->voltage_level);
> - mutex_unlock(&dev_priv->pcu_lock);
>
> intel_update_cdclk(dev_priv);
>
> @@ -1854,12 +1830,10 @@ static void icl_set_cdclk(struct drm_i915_private *dev_priv,
> unsigned int vco = cdclk_state->vco;
> int ret;
>
> - mutex_lock(&dev_priv->pcu_lock);
> ret = skl_pcode_request(dev_priv, SKL_PCODE_CDCLK_CONTROL,
> SKL_CDCLK_PREPARE_FOR_CHANGE,
> SKL_CDCLK_READY_FOR_CHANGE,
> SKL_CDCLK_READY_FOR_CHANGE, 3);
> - mutex_unlock(&dev_priv->pcu_lock);
> if (ret) {
> DRM_ERROR("Failed to inform PCU about cdclk change (%d)\n",
> ret);
> @@ -1876,10 +1850,8 @@ static void icl_set_cdclk(struct drm_i915_private *dev_priv,
> I915_WRITE(CDCLK_CTL, ICL_CDCLK_CD2X_PIPE_NONE |
> skl_cdclk_decimal(cdclk));
>
> - mutex_lock(&dev_priv->pcu_lock);
> /* TODO: add proper DVFS support. */
> sandybridge_pcode_write(dev_priv, SKL_PCODE_CDCLK_CONTROL, 2);
> - mutex_unlock(&dev_priv->pcu_lock);
>
> intel_update_cdclk(dev_priv);
> }
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index b3cbea18283f..c27bbb517f55 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -4934,10 +4934,8 @@ void hsw_enable_ips(const struct intel_crtc_state *crtc_state)
> WARN_ON(!(crtc_state->active_planes & ~BIT(PLANE_CURSOR)));
>
> if (IS_BROADWELL(dev_priv)) {
> - mutex_lock(&dev_priv->pcu_lock);
> WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL,
> IPS_ENABLE | IPS_PCODE_CONTROL));
> - mutex_unlock(&dev_priv->pcu_lock);
> /* Quoting Art Runyan: "its not safe to expect any particular
> * value in IPS_CTL bit 31 after enabling IPS through the
> * mailbox." Moreover, the mailbox may return a bogus state,
> @@ -4967,9 +4965,7 @@ void hsw_disable_ips(const struct intel_crtc_state *crtc_state)
> return;
>
> if (IS_BROADWELL(dev_priv)) {
> - mutex_lock(&dev_priv->pcu_lock);
> WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0));
> - mutex_unlock(&dev_priv->pcu_lock);
> /* wait for pcode to finish disabling IPS, which may take up to 42ms */
> if (intel_wait_for_register(dev_priv,
> IPS_CTL, IPS_ENABLE, 0,
> @@ -8841,11 +8837,9 @@ static uint32_t hsw_read_dcomp(struct drm_i915_private *dev_priv)
> static void hsw_write_dcomp(struct drm_i915_private *dev_priv, uint32_t val)
> {
> if (IS_HASWELL(dev_priv)) {
> - mutex_lock(&dev_priv->pcu_lock);
> if (sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_D_COMP,
> val))
> DRM_DEBUG_KMS("Failed to write to D_COMP\n");
> - mutex_unlock(&dev_priv->pcu_lock);
> } else {
> I915_WRITE(D_COMP_BDW, val);
> POSTING_READ(D_COMP_BDW);
> diff --git a/drivers/gpu/drm/i915/intel_hdcp.c b/drivers/gpu/drm/i915/intel_hdcp.c
> index 14ca5d3057a7..81259a4fbdfd 100644
> --- a/drivers/gpu/drm/i915/intel_hdcp.c
> +++ b/drivers/gpu/drm/i915/intel_hdcp.c
> @@ -68,10 +68,8 @@ static int intel_hdcp_load_keys(struct drm_i915_private *dev_priv)
> * differ in the key load trigger process from other platforms.
> */
> if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
> - mutex_lock(&dev_priv->pcu_lock);
> ret = sandybridge_pcode_write(dev_priv,
> SKL_PCODE_LOAD_HDCP_KEYS, 1);
> - mutex_unlock(&dev_priv->pcu_lock);
> if (ret) {
> DRM_ERROR("Failed to initiate HDCP key load (%d)\n",
> ret);
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 1d52bbf1860a..376c7d4ff972 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -310,7 +310,6 @@ static void chv_set_memory_dvfs(struct drm_i915_private *dev_priv, bool enable)
> {
> u32 val;
>
> - mutex_lock(&dev_priv->pcu_lock);
> vlv_punit_get(dev_priv);
>
> val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2);
> @@ -327,14 +326,12 @@ static void chv_set_memory_dvfs(struct drm_i915_private *dev_priv, bool enable)
> DRM_ERROR("timed out waiting for Punit DDR DVFS request\n");
>
> vlv_punit_put(dev_priv);
> - mutex_unlock(&dev_priv->pcu_lock);
> }
>
> static void chv_set_memory_pm5(struct drm_i915_private *dev_priv, bool enable)
> {
> u32 val;
>
> - mutex_lock(&dev_priv->pcu_lock);
> vlv_punit_get(dev_priv);
>
> val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
> @@ -345,7 +342,6 @@ static void chv_set_memory_pm5(struct drm_i915_private *dev_priv, bool enable)
> vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
>
> vlv_punit_put(dev_priv);
> - mutex_unlock(&dev_priv->pcu_lock);
> }
>
> #define FW_WM(value, plane) \
> @@ -2810,11 +2806,9 @@ static void intel_read_wm_latency(struct drm_i915_private *dev_priv,
>
> /* read the first set of memory latencies[0:3] */
> val = 0; /* data0 to be programmed to 0 for first set */
> - mutex_lock(&dev_priv->pcu_lock);
> ret = sandybridge_pcode_read(dev_priv,
> GEN9_PCODE_READ_MEM_LATENCY,
> &val);
> - mutex_unlock(&dev_priv->pcu_lock);
>
> if (ret) {
> DRM_ERROR("SKL Mailbox read error = %d\n", ret);
> @@ -2831,11 +2825,9 @@ static void intel_read_wm_latency(struct drm_i915_private *dev_priv,
>
> /* read the second set of memory latencies[4:7] */
> val = 1; /* data0 to be programmed to 1 for second set */
> - mutex_lock(&dev_priv->pcu_lock);
> ret = sandybridge_pcode_read(dev_priv,
> GEN9_PCODE_READ_MEM_LATENCY,
> &val);
> - mutex_unlock(&dev_priv->pcu_lock);
> if (ret) {
> DRM_ERROR("SKL Mailbox read error = %d\n", ret);
> return;
> @@ -3622,13 +3614,10 @@ intel_enable_sagv(struct drm_i915_private *dev_priv)
> return 0;
>
> DRM_DEBUG_KMS("Enabling the SAGV\n");
> - mutex_lock(&dev_priv->pcu_lock);
> -
> ret = sandybridge_pcode_write(dev_priv, GEN9_PCODE_SAGV_CONTROL,
> GEN9_SAGV_ENABLE);
>
> /* We don't need to wait for the SAGV when enabling */
> - mutex_unlock(&dev_priv->pcu_lock);
>
> /*
> * Some skl systems, pre-release machines in particular,
> @@ -3659,15 +3648,11 @@ intel_disable_sagv(struct drm_i915_private *dev_priv)
> return 0;
>
> DRM_DEBUG_KMS("Disabling the SAGV\n");
> - mutex_lock(&dev_priv->pcu_lock);
> -
> /* bspec says to keep retrying for at least 1 ms */
> ret = skl_pcode_request(dev_priv, GEN9_PCODE_SAGV_CONTROL,
> GEN9_SAGV_DISABLE,
> GEN9_SAGV_IS_DISABLED, GEN9_SAGV_IS_DISABLED,
> 1);
> - mutex_unlock(&dev_priv->pcu_lock);
> -
> /*
> * Some skl systems, pre-release machines in particular,
> * don't actually have an SAGV.
> @@ -5684,7 +5669,6 @@ void vlv_wm_get_hw_state(struct drm_device *dev)
> wm->level = VLV_WM_LEVEL_PM2;
>
> if (IS_CHERRYVIEW(dev_priv)) {
> - mutex_lock(&dev_priv->pcu_lock);
> vlv_punit_get(dev_priv);
>
> val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
> @@ -5716,7 +5700,6 @@ void vlv_wm_get_hw_state(struct drm_device *dev)
> }
>
> vlv_punit_put(dev_priv);
> - mutex_unlock(&dev_priv->pcu_lock);
> }
>
> for_each_intel_crtc(dev, crtc) {
> @@ -6324,7 +6307,7 @@ void gen6_rps_busy(struct drm_i915_private *dev_priv)
> {
> struct intel_rps *rps = &dev_priv->gt_pm.rps;
>
> - mutex_lock(&dev_priv->pcu_lock);
> + mutex_lock(&rps->lock);
> if (rps->enabled) {
> u8 freq;
>
> @@ -6347,7 +6330,7 @@ void gen6_rps_busy(struct drm_i915_private *dev_priv)
> rps->max_freq_softlimit)))
> DRM_DEBUG_DRIVER("Failed to set idle frequency\n");
> }
> - mutex_unlock(&dev_priv->pcu_lock);
> + mutex_unlock(&rps->lock);
> }
>
> void gen6_rps_idle(struct drm_i915_private *dev_priv)
> @@ -6361,7 +6344,7 @@ void gen6_rps_idle(struct drm_i915_private *dev_priv)
> */
> gen6_disable_rps_interrupts(dev_priv);
>
> - mutex_lock(&dev_priv->pcu_lock);
> + mutex_lock(&rps->lock);
> if (rps->enabled) {
> if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
> vlv_set_rps_idle(dev_priv);
> @@ -6371,7 +6354,7 @@ void gen6_rps_idle(struct drm_i915_private *dev_priv)
> I915_WRITE(GEN6_PMINTRMSK,
> gen6_sanitize_rps_pm_mask(dev_priv, ~0));
> }
> - mutex_unlock(&dev_priv->pcu_lock);
> + mutex_unlock(&rps->lock);
> }
>
> void gen6_rps_boost(struct i915_request *rq,
> @@ -6412,7 +6395,7 @@ int intel_set_rps(struct drm_i915_private *dev_priv, u8 val)
> struct intel_rps *rps = &dev_priv->gt_pm.rps;
> int err;
>
> - lockdep_assert_held(&dev_priv->pcu_lock);
> + lockdep_assert_held(&rps->lock);
> GEM_BUG_ON(val > rps->max_freq);
> GEM_BUG_ON(val < rps->min_freq);
>
> @@ -6911,7 +6894,7 @@ static void gen6_update_ring_freq(struct drm_i915_private *dev_priv)
> int scaling_factor = 180;
> struct cpufreq_policy *policy;
>
> - WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
> + lockdep_assert_held(&rps->lock);
>
> policy = cpufreq_cpu_get(0);
> if (policy) {
> @@ -7988,7 +7971,7 @@ void intel_init_gt_powersave(struct drm_i915_private *dev_priv)
> intel_runtime_pm_get(dev_priv);
> }
>
> - mutex_lock(&dev_priv->pcu_lock);
> + mutex_lock(&rps->lock);
>
> /* Initialize RPS limits (for userspace) */
> if (IS_CHERRYVIEW(dev_priv))
> @@ -8028,7 +8011,7 @@ void intel_init_gt_powersave(struct drm_i915_private *dev_priv)
> /* Finally allow us to boost to max by default */
> rps->boost_freq = rps->max_freq;
>
> - mutex_unlock(&dev_priv->pcu_lock);
> + mutex_unlock(&rps->lock);
> }
>
> void intel_cleanup_gt_powersave(struct drm_i915_private *dev_priv)
> @@ -8070,7 +8053,7 @@ void intel_sanitize_gt_powersave(struct drm_i915_private *dev_priv)
>
> static inline void intel_disable_llc_pstate(struct drm_i915_private *i915)
> {
> - lockdep_assert_held(&i915->pcu_lock);
> + lockdep_assert_held(&i915->gt_pm.rps.lock);
>
> if (!i915->gt_pm.llc_pstate.enabled)
> return;
> @@ -8082,7 +8065,7 @@ static inline void intel_disable_llc_pstate(struct drm_i915_private *i915)
>
> static void intel_disable_rc6(struct drm_i915_private *dev_priv)
> {
> - lockdep_assert_held(&dev_priv->pcu_lock);
> + lockdep_assert_held(&dev_priv->gt_pm.rps.lock);
>
> if (!dev_priv->gt_pm.rc6.enabled)
> return;
> @@ -8101,7 +8084,7 @@ static void intel_disable_rc6(struct drm_i915_private *dev_priv)
>
> static void intel_disable_rps(struct drm_i915_private *dev_priv)
> {
> - lockdep_assert_held(&dev_priv->pcu_lock);
> + lockdep_assert_held(&dev_priv->gt_pm.rps.lock);
>
> if (!dev_priv->gt_pm.rps.enabled)
> return;
> @@ -8122,19 +8105,19 @@ static void intel_disable_rps(struct drm_i915_private *dev_priv)
>
> void intel_disable_gt_powersave(struct drm_i915_private *dev_priv)
> {
> - mutex_lock(&dev_priv->pcu_lock);
> + mutex_lock(&dev_priv->gt_pm.rps.lock);
>
> intel_disable_rc6(dev_priv);
> intel_disable_rps(dev_priv);
> if (HAS_LLC(dev_priv))
> intel_disable_llc_pstate(dev_priv);
>
> - mutex_unlock(&dev_priv->pcu_lock);
> + mutex_unlock(&dev_priv->gt_pm.rps.lock);
> }
>
> static inline void intel_enable_llc_pstate(struct drm_i915_private *i915)
> {
> - lockdep_assert_held(&i915->pcu_lock);
> + lockdep_assert_held(&i915->gt_pm.rps.lock);
>
> if (i915->gt_pm.llc_pstate.enabled)
> return;
> @@ -8146,7 +8129,7 @@ static inline void intel_enable_llc_pstate(struct drm_i915_private *i915)
>
> static void intel_enable_rc6(struct drm_i915_private *dev_priv)
> {
> - lockdep_assert_held(&dev_priv->pcu_lock);
> + lockdep_assert_held(&dev_priv->gt_pm.rps.lock);
>
> if (dev_priv->gt_pm.rc6.enabled)
> return;
> @@ -8169,7 +8152,7 @@ static void intel_enable_rps(struct drm_i915_private *dev_priv)
> {
> struct intel_rps *rps = &dev_priv->gt_pm.rps;
>
> - lockdep_assert_held(&dev_priv->pcu_lock);
> + lockdep_assert_held(&rps->lock);
>
> if (rps->enabled)
> return;
> @@ -8206,7 +8189,7 @@ void intel_enable_gt_powersave(struct drm_i915_private *dev_priv)
> if (intel_vgpu_active(dev_priv))
> return;
>
> - mutex_lock(&dev_priv->pcu_lock);
> + mutex_lock(&dev_priv->gt_pm.rps.lock);
>
> if (HAS_RC6(dev_priv))
> intel_enable_rc6(dev_priv);
> @@ -8214,7 +8197,7 @@ void intel_enable_gt_powersave(struct drm_i915_private *dev_priv)
> if (HAS_LLC(dev_priv))
> intel_enable_llc_pstate(dev_priv);
>
> - mutex_unlock(&dev_priv->pcu_lock);
> + mutex_unlock(&dev_priv->gt_pm.rps.lock);
> }
>
> static void ibx_init_clock_gating(struct drm_i915_private *dev_priv)
> @@ -9214,22 +9197,19 @@ static inline int gen7_check_mailbox_status(struct drm_i915_private *dev_priv)
> }
> }
>
> -int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val)
> +static int __sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val)
> {
> int status;
>
> - WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
> + lockdep_assert_held(&dev_priv->sb_lock);
>
> /* GEN6_PCODE_* are outside of the forcewake domain, we can
> * use te fw I915_READ variants to reduce the amount of work
> * required when reading/writing.
> */
>
> - if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) {
> - DRM_DEBUG_DRIVER("warning: pcode (read from mbox %x) mailbox access failed for %ps\n",
> - mbox, __builtin_return_address(0));
> + if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY)
> return -EAGAIN;
> - }
>
> I915_WRITE_FW(GEN6_PCODE_DATA, *val);
> I915_WRITE_FW(GEN6_PCODE_DATA1, 0 > @@ -9237,11 +9217,8 @@ int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val
>
> if (__intel_wait_for_register_fw(dev_priv,
> GEN6_PCODE_MAILBOX, GEN6_PCODE_READY, 0,
> - 500, 0, NULL)) {
> - DRM_ERROR("timeout waiting for pcode read (from mbox %x) to finish for %ps\n",
> - mbox, __builtin_return_address(0));
> + 500, 0, NULL))
> return -ETIMEDOUT;
> - }
>
> *val = I915_READ_FW(GEN6_PCODE_DATA);
> I915_WRITE_FW(GEN6_PCODE_DATA, 0);
> @@ -9251,33 +9228,39 @@ int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val
> else
> status = gen6_check_mailbox_status(dev_priv);
>
> + return status;
> +}
> +
> +int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val)
> +{
> + int status;
> +
> + mutex_lock(&dev_priv->sb_lock);
> + status = __sandybridge_pcode_read(dev_priv, mbox, val);
> + mutex_unlock(&dev_priv->sb_lock);
> +
> if (status) {
> DRM_DEBUG_DRIVER("warning: pcode (read from mbox %x) mailbox access failed for %ps: %d\n",
> mbox, __builtin_return_address(0), status);
> - return status;
> }
>
> - return 0;
> + return status;
> }
>
> -int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
> - u32 mbox, u32 val,
> - int fast_timeout_us, int slow_timeout_ms)
> +static int __sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
> + u32 mbox, u32 val,
> + int fast_timeout_us,
> + int slow_timeout_ms)
> {
> int status;
>
> - WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
> -
> /* GEN6_PCODE_* are outside of the forcewake domain, we can
> * use te fw I915_READ variants to reduce the amount of work
> * required when reading/writing.
> */
>
> - if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) {
> - DRM_DEBUG_DRIVER("warning: pcode (write of 0x%08x to mbox %x) mailbox access failed for %ps\n",
> - val, mbox, __builtin_return_address(0));
> + if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY)
> return -EAGAIN;
> - }
>
> I915_WRITE_FW(GEN6_PCODE_DATA, val);
> I915_WRITE_FW(GEN6_PCODE_DATA1, 0);
> @@ -9286,11 +9269,8 @@ int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
> if (__intel_wait_for_register_fw(dev_priv,
> GEN6_PCODE_MAILBOX, GEN6_PCODE_READY, 0,
> fast_timeout_us, slow_timeout_ms,
> - NULL)) {
> - DRM_ERROR("timeout waiting for pcode write of 0x%08x to mbox %x to finish for %ps\n",
> - val, mbox, __builtin_return_address(0));
> + NULL))
> return -ETIMEDOUT;
> - }
>
> I915_WRITE_FW(GEN6_PCODE_DATA, 0);
>
> @@ -9299,13 +9279,28 @@ int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
> else
> status = gen6_check_mailbox_status(dev_priv);
>
> + return status;
> +}
> +
> +int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
> + u32 mbox, u32 val,
> + int fast_timeout_us,
> + int slow_timeout_ms)
> +{
> + int status;
> +
> + mutex_lock(&dev_priv->sb_lock);
> + status = __sandybridge_pcode_write_timeout(dev_priv, mbox, val,
> + fast_timeout_us,
> + slow_timeout_ms);
> + mutex_unlock(&dev_priv->sb_lock);
> +
> if (status) {
> DRM_DEBUG_DRIVER("warning: pcode (write of 0x%08x to mbox %x) mailbox access failed for %ps: %d\n",
> val, mbox, __builtin_return_address(0), status);
> - return status;
> }
>
> - return 0;
> + return status;
> }
>
> static bool skl_pcode_try_request(struct drm_i915_private *dev_priv, u32 mbox,
> @@ -9314,7 +9309,7 @@ static bool skl_pcode_try_request(struct drm_i915_private *dev_priv, u32 mbox,
> {
> u32 val = request;
>
> - *status = sandybridge_pcode_read(dev_priv, mbox, &val);
> + *status = __sandybridge_pcode_read(dev_priv, mbox, &val);
>
> return *status || ((val & reply_mask) == reply);
> }
> @@ -9344,7 +9339,7 @@ int skl_pcode_request(struct drm_i915_private *dev_priv, u32 mbox, u32 request,
> u32 status;
> int ret;
>
> - WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
> + mutex_lock(&dev_priv->sb_lock);
>
> #define COND skl_pcode_try_request(dev_priv, mbox, request, reply_mask, reply, \
> &status)
> @@ -9380,6 +9375,7 @@ int skl_pcode_request(struct drm_i915_private *dev_priv, u32 mbox, u32 request,
> preempt_enable();
>
> out:
> + mutex_unlock(&dev_priv->sb_lock);
> return ret ? ret : status;
> #undef COND
> }
> @@ -9449,8 +9445,7 @@ int intel_freq_opcode(struct drm_i915_private *dev_priv, int val)
>
> void intel_pm_setup(struct drm_i915_private *dev_priv)
> {
> - mutex_init(&dev_priv->pcu_lock);
> -
> + mutex_init(&dev_priv->gt_pm.rps.lock);
> atomic_set(&dev_priv->gt_pm.rps.num_waiters, 0);
>
> dev_priv->runtime_pm.suspended = false;
> diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
> index 069b6a30468f..2cc64f0fda57 100644
> --- a/drivers/gpu/drm/i915/intel_runtime_pm.c
> +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
> @@ -815,7 +815,6 @@ static void vlv_set_power_well(struct drm_i915_private *dev_priv,
> state = enable ? PUNIT_PWRGT_PWR_ON(power_well_id) :
> PUNIT_PWRGT_PWR_GATE(power_well_id);
>
> - mutex_lock(&dev_priv->pcu_lock);
> vlv_punit_get(dev_priv);
>
> #define COND \
> @@ -838,7 +837,6 @@ static void vlv_set_power_well(struct drm_i915_private *dev_priv,
>
> out:
> vlv_punit_put(dev_priv);
> - mutex_unlock(&dev_priv->pcu_lock);
> }
>
> static void vlv_power_well_enable(struct drm_i915_private *dev_priv,
> @@ -865,7 +863,6 @@ static bool vlv_power_well_enabled(struct drm_i915_private *dev_priv,
> mask = PUNIT_PWRGT_MASK(power_well_id);
> ctrl = PUNIT_PWRGT_PWR_ON(power_well_id);
>
> - mutex_lock(&dev_priv->pcu_lock);
> vlv_punit_get(dev_priv);
>
> state = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_STATUS) & mask;
> @@ -886,7 +883,6 @@ static bool vlv_power_well_enabled(struct drm_i915_private *dev_priv,
> WARN_ON(ctrl != state);
>
> vlv_punit_put(dev_priv);
> - mutex_unlock(&dev_priv->pcu_lock);
>
> return enabled;
> }
> @@ -1398,7 +1394,6 @@ static bool chv_pipe_power_well_enabled(struct drm_i915_private *dev_priv,
> bool enabled;
> u32 state, ctrl;
>
> - mutex_lock(&dev_priv->pcu_lock);
> vlv_punit_get(dev_priv);
>
> state = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) & DP_SSS_MASK(pipe);
> @@ -1417,7 +1412,6 @@ static bool chv_pipe_power_well_enabled(struct drm_i915_private *dev_priv,
> WARN_ON(ctrl << 16 != state);
>
> vlv_punit_put(dev_priv);
> - mutex_unlock(&dev_priv->pcu_lock);
>
> return enabled;
> }
> @@ -1432,7 +1426,6 @@ static void chv_set_pipe_power_well(struct drm_i915_private *dev_priv,
>
> state = enable ? DP_SSS_PWR_ON(pipe) : DP_SSS_PWR_GATE(pipe);
>
> - mutex_lock(&dev_priv->pcu_lock);
> vlv_punit_get(dev_priv);
>
> #define COND \
> @@ -1455,7 +1448,6 @@ static void chv_set_pipe_power_well(struct drm_i915_private *dev_priv,
>
> out:
> vlv_punit_put(dev_priv);
> - mutex_unlock(&dev_priv->pcu_lock);
> }
>
> static void chv_pipe_power_well_enable(struct drm_i915_private *dev_priv,
> diff --git a/drivers/gpu/drm/i915/intel_sideband.c b/drivers/gpu/drm/i915/intel_sideband.c
> index dc3b491b4d00..2d4e48e9e1d5 100644
> --- a/drivers/gpu/drm/i915/intel_sideband.c
> +++ b/drivers/gpu/drm/i915/intel_sideband.c
> @@ -142,8 +142,6 @@ u32 vlv_punit_read(struct drm_i915_private *dev_priv, u32 addr)
> {
> u32 val = 0;
>
> - lockdep_assert_held(&dev_priv->pcu_lock);
> -
> vlv_sideband_rw(dev_priv, PCI_DEVFN(0, 0), IOSF_PORT_PUNIT,
> SB_CRRDDA_NP, addr, &val);
>
> @@ -152,8 +150,6 @@ u32 vlv_punit_read(struct drm_i915_private *dev_priv, u32 addr)
>
> int vlv_punit_write(struct drm_i915_private *dev_priv, u32 addr, u32 val)
> {
> - lockdep_assert_held(&dev_priv->pcu_lock);
> -
> return vlv_sideband_rw(dev_priv, PCI_DEVFN(0, 0), IOSF_PORT_PUNIT,
> SB_CRWRDA_NP, addr, &val);
> }
>
Regards,
Hans
_______________________________________________
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Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 19+ messages in thread
* Re: vlv punit and sideband tidy
2018-03-07 20:39 ` vlv punit and sideband tidy Rogozhkin, Dmitry V
@ 2018-03-08 16:49 ` Chris Wilson
0 siblings, 0 replies; 19+ messages in thread
From: Chris Wilson @ 2018-03-08 16:49 UTC (permalink / raw)
To: Rogozhkin, Dmitry V, intel-gfx
Quoting Rogozhkin, Dmitry V (2018-03-07 20:39:16)
> On Wed, 2018-03-07 at 19:41 +0000, Chris Wilson wrote:
> > Mika
> > believes that if we keep the cpu in C0 whilst the gpu is busy, then
> > it
> > behaves much better -- but that is a very tough sell
>
> Chris, Mika, I wonder does i915 driver tries to keep CPU in C0 at the
> moment already or you just consider this?
That is what Mika looked at, setting C0 while the GPU is marked busy.
Iirc, he was satisfied with the result, I just objected on the grounds
that keeping the CPU at max frequency was unlikely to win any friends in
HTPC. (Although, maybe my gut feeling here is backwards and killawatt
reports differently.)
> CPU while gpu is busy, could you, please, clarify what exactly and
> point me to the code/key patches? Please, answer from BDW/SKL gen
> perspective rather than VLV.
Basically you do pm_qos_update_request() from i915_request::mark_busy().
-Chris
_______________________________________________
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Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 19+ messages in thread
* [PATCH v2] drm/i915: Replace pcu_lock with sb_lock
2018-03-07 19:41 ` [PATCH 06/10] drm/i915: Replace pcu_lock with sb_lock Chris Wilson
2018-03-08 8:06 ` [06/10] " Hans de Goede
@ 2018-03-08 19:49 ` Chris Wilson
1 sibling, 0 replies; 19+ messages in thread
From: Chris Wilson @ 2018-03-08 19:49 UTC (permalink / raw)
To: intel-gfx
We now have two locks for sideband access. The general one covering
sideband access across all generation, sb_lock, and a specific one
covering sideband access via the punit on vlv/chv. After lifting the
sb_lock around the punit into the callers, the pcu_lock is now redudant
and can be separated from its other use to regulate RPS (essentially
giving RPS a lock all of its own).
v2: Extract a couple of minor bug fixes.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_debugfs.c | 47 ++++--------
drivers/gpu/drm/i915/i915_drv.h | 10 +--
drivers/gpu/drm/i915/i915_irq.c | 4 +-
drivers/gpu/drm/i915/i915_sysfs.c | 32 +++-----
drivers/gpu/drm/i915/intel_cdclk.c | 28 -------
drivers/gpu/drm/i915/intel_display.c | 6 --
drivers/gpu/drm/i915/intel_hdcp.c | 2 -
drivers/gpu/drm/i915/intel_pm.c | 127 +++++++++++++++-----------------
drivers/gpu/drm/i915/intel_runtime_pm.c | 8 --
drivers/gpu/drm/i915/intel_sideband.c | 4 -
10 files changed, 93 insertions(+), 175 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 8e7820f94358..97053e0afe63 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1074,8 +1074,6 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
u32 rpmodectl, freq_sts;
- mutex_lock(&dev_priv->pcu_lock);
-
rpmodectl = I915_READ(GEN6_RP_CONTROL);
seq_printf(m, "Video Turbo Mode: %s\n",
yesno(rpmodectl & GEN6_RP_MEDIA_TURBO));
@@ -1110,7 +1108,6 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
seq_printf(m,
"efficient (RPe) frequency: %d MHz\n",
intel_gpu_freq(dev_priv, rps->efficient_freq));
- mutex_unlock(&dev_priv->pcu_lock);
} else if (INTEL_GEN(dev_priv) >= 6) {
u32 rp_state_limits;
u32 gt_perf_status;
@@ -1525,12 +1522,9 @@ static int gen6_drpc_info(struct seq_file *m)
gen9_powergate_status = I915_READ(GEN9_PWRGT_DOMAIN_STATUS);
}
- if (INTEL_GEN(dev_priv) <= 7) {
- mutex_lock(&dev_priv->pcu_lock);
+ if (INTEL_GEN(dev_priv) <= 7)
sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS,
&rc6vids);
- mutex_unlock(&dev_priv->pcu_lock);
- }
seq_printf(m, "RC1e Enabled: %s\n",
yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
@@ -1801,17 +1795,10 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused)
struct intel_rps *rps = &dev_priv->gt_pm.rps;
unsigned int max_gpu_freq, min_gpu_freq;
int gpu_freq, ia_freq;
- int ret;
if (!HAS_LLC(dev_priv))
return -ENODEV;
- intel_runtime_pm_get(dev_priv);
-
- ret = mutex_lock_interruptible(&dev_priv->pcu_lock);
- if (ret)
- goto out;
-
min_gpu_freq = rps->min_freq;
max_gpu_freq = rps->max_freq;
if (IS_GEN9_BC(dev_priv) || IS_CANNONLAKE(dev_priv)) {
@@ -1822,6 +1809,7 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused)
seq_puts(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\tEffective Ring freq (MHz)\n");
+ intel_runtime_pm_get(dev_priv);
for (gpu_freq = min_gpu_freq; gpu_freq <= max_gpu_freq; gpu_freq++) {
ia_freq = gpu_freq;
sandybridge_pcode_read(dev_priv,
@@ -1835,12 +1823,9 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused)
((ia_freq >> 0) & 0xff) * 100,
((ia_freq >> 8) & 0xff) * 100);
}
-
- mutex_unlock(&dev_priv->pcu_lock);
-
-out:
intel_runtime_pm_put(dev_priv);
- return ret;
+
+ return 0;
}
static int i915_opregion(struct seq_file *m, void *unused)
@@ -4178,7 +4163,7 @@ i915_max_freq_set(void *data, u64 val)
DRM_DEBUG_DRIVER("Manually setting max freq to %llu\n", val);
- ret = mutex_lock_interruptible(&dev_priv->pcu_lock);
+ ret = mutex_lock_interruptible(&rps->lock);
if (ret)
return ret;
@@ -4191,8 +4176,8 @@ i915_max_freq_set(void *data, u64 val)
hw_min = rps->min_freq;
if (val < hw_min || val > hw_max || val < rps->min_freq_softlimit) {
- mutex_unlock(&dev_priv->pcu_lock);
- return -EINVAL;
+ ret = -EINVAL;
+ goto unlock;
}
rps->max_freq_softlimit = val;
@@ -4200,9 +4185,9 @@ i915_max_freq_set(void *data, u64 val)
if (intel_set_rps(dev_priv, val))
DRM_DEBUG_DRIVER("failed to update RPS to new softlimit\n");
- mutex_unlock(&dev_priv->pcu_lock);
-
- return 0;
+unlock:
+ mutex_unlock(&rps->lock);
+ return ret;
}
DEFINE_SIMPLE_ATTRIBUTE(i915_max_freq_fops,
@@ -4234,7 +4219,7 @@ i915_min_freq_set(void *data, u64 val)
DRM_DEBUG_DRIVER("Manually setting min freq to %llu\n", val);
- ret = mutex_lock_interruptible(&dev_priv->pcu_lock);
+ ret = mutex_lock_interruptible(&rps->lock);
if (ret)
return ret;
@@ -4248,8 +4233,8 @@ i915_min_freq_set(void *data, u64 val)
if (val < hw_min ||
val > hw_max || val > rps->max_freq_softlimit) {
- mutex_unlock(&dev_priv->pcu_lock);
- return -EINVAL;
+ ret = -EINVAL;
+ goto unlock;
}
rps->min_freq_softlimit = val;
@@ -4257,9 +4242,9 @@ i915_min_freq_set(void *data, u64 val)
if (intel_set_rps(dev_priv, val))
DRM_DEBUG_DRIVER("failed to update RPS to new softlimit\n");
- mutex_unlock(&dev_priv->pcu_lock);
-
- return 0;
+unlock:
+ mutex_unlock(&rps->lock);
+ return ret;
}
DEFINE_SIMPLE_ATTRIBUTE(i915_min_freq_fops,
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index b2944a619f12..d78275263178 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -900,6 +900,8 @@ struct intel_rps_ei {
};
struct intel_rps {
+ struct mutex lock;
+
/*
* work, interrupts_enabled and pm_iir are protected by
* dev_priv->irq_lock
@@ -2054,14 +2056,6 @@ struct drm_i915_private {
/* Cannot be determined by PCIID. You must always read a register. */
u32 edram_cap;
- /*
- * Protects RPS/RC6 register access and PCU communication.
- * Must be taken after struct_mutex if nested. Note that
- * this lock may be held for long periods of time when
- * talking to hw - so only take it when talking to hw!
- */
- struct mutex pcu_lock;
-
/* gen6+ GT PM state */
struct intel_gen6_power_mgmt gt_pm;
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index babf81cf668b..0397912461bf 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1204,7 +1204,7 @@ static void gen6_pm_rps_work(struct work_struct *work)
if ((pm_iir & dev_priv->pm_rps_events) == 0 && !client_boost)
goto out;
- mutex_lock(&dev_priv->pcu_lock);
+ mutex_lock(&rps->lock);
pm_iir |= vlv_wa_c0_ei(dev_priv, pm_iir);
@@ -1258,7 +1258,7 @@ static void gen6_pm_rps_work(struct work_struct *work)
rps->last_adj = 0;
}
- mutex_unlock(&dev_priv->pcu_lock);
+ mutex_unlock(&rps->lock);
out:
/* Make sure not to corrupt PMIMR state used by ringbuffer on GEN6 */
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
index 0519e00b3720..c98375ba79b4 100644
--- a/drivers/gpu/drm/i915/i915_sysfs.c
+++ b/drivers/gpu/drm/i915/i915_sysfs.c
@@ -262,7 +262,6 @@ static ssize_t gt_act_freq_mhz_show(struct device *kdev,
intel_runtime_pm_get(dev_priv);
- mutex_lock(&dev_priv->pcu_lock);
if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
vlv_punit_get(dev_priv);
freq = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
@@ -272,7 +271,6 @@ static ssize_t gt_act_freq_mhz_show(struct device *kdev,
} else {
freq = intel_get_cagf(dev_priv, I915_READ(GEN6_RPSTAT1));
}
- mutex_unlock(&dev_priv->pcu_lock);
intel_runtime_pm_put(dev_priv);
@@ -317,12 +315,12 @@ static ssize_t gt_boost_freq_mhz_store(struct device *kdev,
if (val < rps->min_freq || val > rps->max_freq)
return -EINVAL;
- mutex_lock(&dev_priv->pcu_lock);
+ mutex_lock(&rps->lock);
if (val != rps->boost_freq) {
rps->boost_freq = val;
boost = atomic_read(&rps->num_waiters);
}
- mutex_unlock(&dev_priv->pcu_lock);
+ mutex_unlock(&rps->lock);
if (boost)
schedule_work(&rps->work);
@@ -362,17 +360,14 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
return ret;
intel_runtime_pm_get(dev_priv);
-
- mutex_lock(&dev_priv->pcu_lock);
+ mutex_lock(&rps->lock);
val = intel_freq_opcode(dev_priv, val);
-
if (val < rps->min_freq ||
val > rps->max_freq ||
val < rps->min_freq_softlimit) {
- mutex_unlock(&dev_priv->pcu_lock);
- intel_runtime_pm_put(dev_priv);
- return -EINVAL;
+ ret = -EINVAL;
+ goto unlock;
}
if (val > rps->rp0_freq)
@@ -390,8 +385,8 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
* frequency request may be unchanged. */
ret = intel_set_rps(dev_priv, val);
- mutex_unlock(&dev_priv->pcu_lock);
-
+unlock:
+ mutex_unlock(&rps->lock);
intel_runtime_pm_put(dev_priv);
return ret ?: count;
@@ -420,17 +415,14 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
return ret;
intel_runtime_pm_get(dev_priv);
-
- mutex_lock(&dev_priv->pcu_lock);
+ mutex_lock(&rps->lock);
val = intel_freq_opcode(dev_priv, val);
-
if (val < rps->min_freq ||
val > rps->max_freq ||
val > rps->max_freq_softlimit) {
- mutex_unlock(&dev_priv->pcu_lock);
- intel_runtime_pm_put(dev_priv);
- return -EINVAL;
+ ret = -EINVAL;
+ goto unlock;
}
rps->min_freq_softlimit = val;
@@ -444,8 +436,8 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
* frequency request may be unchanged. */
ret = intel_set_rps(dev_priv, val);
- mutex_unlock(&dev_priv->pcu_lock);
-
+unlock:
+ mutex_unlock(&rps->lock);
intel_runtime_pm_put(dev_priv);
return ret ?: count;
diff --git a/drivers/gpu/drm/i915/intel_cdclk.c b/drivers/gpu/drm/i915/intel_cdclk.c
index e53e8c36a591..b77589d9fb2c 100644
--- a/drivers/gpu/drm/i915/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/intel_cdclk.c
@@ -461,7 +461,6 @@ static void vlv_get_cdclk(struct drm_i915_private *dev_priv,
{
u32 val;
- mutex_lock(&dev_priv->pcu_lock);
vlv_iosf_sb_get(dev_priv,
BIT(VLV_IOSF_SB_CCK) | BIT(VLV_IOSF_SB_PUNIT));
@@ -474,7 +473,6 @@ static void vlv_get_cdclk(struct drm_i915_private *dev_priv,
vlv_iosf_sb_put(dev_priv,
BIT(VLV_IOSF_SB_CCK) | BIT(VLV_IOSF_SB_PUNIT));
- mutex_unlock(&dev_priv->pcu_lock);
if (IS_VALLEYVIEW(dev_priv))
cdclk_state->voltage_level = (val & DSPFREQGUAR_MASK) >>
@@ -551,7 +549,6 @@ static void vlv_set_cdclk(struct drm_i915_private *dev_priv,
BIT(VLV_IOSF_SB_BUNIT) |
BIT(VLV_IOSF_SB_PUNIT));
- mutex_lock(&dev_priv->pcu_lock);
val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
val &= ~DSPFREQGUAR_MASK;
val |= (cmd << DSPFREQGUAR_SHIFT);
@@ -561,7 +558,6 @@ static void vlv_set_cdclk(struct drm_i915_private *dev_priv,
50)) {
DRM_ERROR("timed out waiting for CDclk change\n");
}
- mutex_unlock(&dev_priv->pcu_lock);
if (cdclk == 400000) {
u32 divider;
@@ -632,7 +628,6 @@ static void chv_set_cdclk(struct drm_i915_private *dev_priv,
*/
intel_display_power_get(dev_priv, POWER_DOMAIN_PIPE_A);
- mutex_lock(&dev_priv->pcu_lock);
vlv_punit_get(dev_priv);
val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
@@ -646,7 +641,6 @@ static void chv_set_cdclk(struct drm_i915_private *dev_priv,
}
vlv_punit_put(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
intel_update_cdclk(dev_priv);
@@ -724,10 +718,8 @@ static void bdw_set_cdclk(struct drm_i915_private *dev_priv,
"trying to change cdclk frequency with cdclk not enabled\n"))
return;
- mutex_lock(&dev_priv->pcu_lock);
ret = sandybridge_pcode_write(dev_priv,
BDW_PCODE_DISPLAY_FREQ_CHANGE_REQ, 0x0);
- mutex_unlock(&dev_priv->pcu_lock);
if (ret) {
DRM_ERROR("failed to inform pcode about cdclk change\n");
return;
@@ -776,10 +768,8 @@ static void bdw_set_cdclk(struct drm_i915_private *dev_priv,
LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
DRM_ERROR("Switching back to LCPLL failed\n");
- mutex_lock(&dev_priv->pcu_lock);
sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ,
cdclk_state->voltage_level);
- mutex_unlock(&dev_priv->pcu_lock);
I915_WRITE(CDCLK_FREQ, DIV_ROUND_CLOSEST(cdclk, 1000) - 1);
@@ -1007,12 +997,10 @@ static void skl_set_cdclk(struct drm_i915_private *dev_priv,
u32 freq_select, cdclk_ctl;
int ret;
- mutex_lock(&dev_priv->pcu_lock);
ret = skl_pcode_request(dev_priv, SKL_PCODE_CDCLK_CONTROL,
SKL_CDCLK_PREPARE_FOR_CHANGE,
SKL_CDCLK_READY_FOR_CHANGE,
SKL_CDCLK_READY_FOR_CHANGE, 3);
- mutex_unlock(&dev_priv->pcu_lock);
if (ret) {
DRM_ERROR("Failed to inform PCU about cdclk change (%d)\n",
ret);
@@ -1076,10 +1064,8 @@ static void skl_set_cdclk(struct drm_i915_private *dev_priv,
POSTING_READ(CDCLK_CTL);
/* inform PCU of the change */
- mutex_lock(&dev_priv->pcu_lock);
sandybridge_pcode_write(dev_priv, SKL_PCODE_CDCLK_CONTROL,
cdclk_state->voltage_level);
- mutex_unlock(&dev_priv->pcu_lock);
intel_update_cdclk(dev_priv);
}
@@ -1391,12 +1377,9 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
* requires us to wait up to 150usec, but that leads to timeouts;
* the 2ms used here is based on experiment.
*/
- mutex_lock(&dev_priv->pcu_lock);
ret = sandybridge_pcode_write_timeout(dev_priv,
HSW_PCODE_DE_WRITE_FREQ_REQ,
0x80000000, 150, 2);
- mutex_unlock(&dev_priv->pcu_lock);
-
if (ret) {
DRM_ERROR("PCode CDCLK freq change notify failed (err %d, freq %d)\n",
ret, cdclk);
@@ -1424,7 +1407,6 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
val |= BXT_CDCLK_SSA_PRECHARGE_ENABLE;
I915_WRITE(CDCLK_CTL, val);
- mutex_lock(&dev_priv->pcu_lock);
/*
* The timeout isn't specified, the 2ms used here is based on
* experiment.
@@ -1434,8 +1416,6 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
ret = sandybridge_pcode_write_timeout(dev_priv,
HSW_PCODE_DE_WRITE_FREQ_REQ,
cdclk_state->voltage_level, 150, 2);
- mutex_unlock(&dev_priv->pcu_lock);
-
if (ret) {
DRM_ERROR("PCode CDCLK freq set failed, (err %d, freq %d)\n",
ret, cdclk);
@@ -1673,12 +1653,10 @@ static void cnl_set_cdclk(struct drm_i915_private *dev_priv,
u32 val, divider;
int ret;
- mutex_lock(&dev_priv->pcu_lock);
ret = skl_pcode_request(dev_priv, SKL_PCODE_CDCLK_CONTROL,
SKL_CDCLK_PREPARE_FOR_CHANGE,
SKL_CDCLK_READY_FOR_CHANGE,
SKL_CDCLK_READY_FOR_CHANGE, 3);
- mutex_unlock(&dev_priv->pcu_lock);
if (ret) {
DRM_ERROR("Failed to inform PCU about cdclk change (%d)\n",
ret);
@@ -1715,10 +1693,8 @@ static void cnl_set_cdclk(struct drm_i915_private *dev_priv,
I915_WRITE(CDCLK_CTL, val);
/* inform PCU of the change */
- mutex_lock(&dev_priv->pcu_lock);
sandybridge_pcode_write(dev_priv, SKL_PCODE_CDCLK_CONTROL,
cdclk_state->voltage_level);
- mutex_unlock(&dev_priv->pcu_lock);
intel_update_cdclk(dev_priv);
@@ -1854,12 +1830,10 @@ static void icl_set_cdclk(struct drm_i915_private *dev_priv,
unsigned int vco = cdclk_state->vco;
int ret;
- mutex_lock(&dev_priv->pcu_lock);
ret = skl_pcode_request(dev_priv, SKL_PCODE_CDCLK_CONTROL,
SKL_CDCLK_PREPARE_FOR_CHANGE,
SKL_CDCLK_READY_FOR_CHANGE,
SKL_CDCLK_READY_FOR_CHANGE, 3);
- mutex_unlock(&dev_priv->pcu_lock);
if (ret) {
DRM_ERROR("Failed to inform PCU about cdclk change (%d)\n",
ret);
@@ -1876,10 +1850,8 @@ static void icl_set_cdclk(struct drm_i915_private *dev_priv,
I915_WRITE(CDCLK_CTL, ICL_CDCLK_CD2X_PIPE_NONE |
skl_cdclk_decimal(cdclk));
- mutex_lock(&dev_priv->pcu_lock);
/* TODO: add proper DVFS support. */
sandybridge_pcode_write(dev_priv, SKL_PCODE_CDCLK_CONTROL, 2);
- mutex_unlock(&dev_priv->pcu_lock);
intel_update_cdclk(dev_priv);
}
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 7387225834e0..e233011ee4cf 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4934,10 +4934,8 @@ void hsw_enable_ips(const struct intel_crtc_state *crtc_state)
WARN_ON(!(crtc_state->active_planes & ~BIT(PLANE_CURSOR)));
if (IS_BROADWELL(dev_priv)) {
- mutex_lock(&dev_priv->pcu_lock);
WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL,
IPS_ENABLE | IPS_PCODE_CONTROL));
- mutex_unlock(&dev_priv->pcu_lock);
/* Quoting Art Runyan: "its not safe to expect any particular
* value in IPS_CTL bit 31 after enabling IPS through the
* mailbox." Moreover, the mailbox may return a bogus state,
@@ -4967,9 +4965,7 @@ void hsw_disable_ips(const struct intel_crtc_state *crtc_state)
return;
if (IS_BROADWELL(dev_priv)) {
- mutex_lock(&dev_priv->pcu_lock);
WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0));
- mutex_unlock(&dev_priv->pcu_lock);
/* wait for pcode to finish disabling IPS, which may take up to 42ms */
if (intel_wait_for_register(dev_priv,
IPS_CTL, IPS_ENABLE, 0,
@@ -8841,11 +8837,9 @@ static uint32_t hsw_read_dcomp(struct drm_i915_private *dev_priv)
static void hsw_write_dcomp(struct drm_i915_private *dev_priv, uint32_t val)
{
if (IS_HASWELL(dev_priv)) {
- mutex_lock(&dev_priv->pcu_lock);
if (sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_D_COMP,
val))
DRM_DEBUG_KMS("Failed to write to D_COMP\n");
- mutex_unlock(&dev_priv->pcu_lock);
} else {
I915_WRITE(D_COMP_BDW, val);
POSTING_READ(D_COMP_BDW);
diff --git a/drivers/gpu/drm/i915/intel_hdcp.c b/drivers/gpu/drm/i915/intel_hdcp.c
index 14ca5d3057a7..81259a4fbdfd 100644
--- a/drivers/gpu/drm/i915/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/intel_hdcp.c
@@ -68,10 +68,8 @@ static int intel_hdcp_load_keys(struct drm_i915_private *dev_priv)
* differ in the key load trigger process from other platforms.
*/
if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
- mutex_lock(&dev_priv->pcu_lock);
ret = sandybridge_pcode_write(dev_priv,
SKL_PCODE_LOAD_HDCP_KEYS, 1);
- mutex_unlock(&dev_priv->pcu_lock);
if (ret) {
DRM_ERROR("Failed to initiate HDCP key load (%d)\n",
ret);
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 08dd3990633c..b556ea3239cc 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -310,7 +310,6 @@ static void chv_set_memory_dvfs(struct drm_i915_private *dev_priv, bool enable)
{
u32 val;
- mutex_lock(&dev_priv->pcu_lock);
vlv_punit_get(dev_priv);
val = vlv_punit_read(dev_priv, PUNIT_REG_DDR_SETUP2);
@@ -327,14 +326,12 @@ static void chv_set_memory_dvfs(struct drm_i915_private *dev_priv, bool enable)
DRM_ERROR("timed out waiting for Punit DDR DVFS request\n");
vlv_punit_put(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
}
static void chv_set_memory_pm5(struct drm_i915_private *dev_priv, bool enable)
{
u32 val;
- mutex_lock(&dev_priv->pcu_lock);
vlv_punit_get(dev_priv);
val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
@@ -345,7 +342,6 @@ static void chv_set_memory_pm5(struct drm_i915_private *dev_priv, bool enable)
vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
vlv_punit_put(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
}
#define FW_WM(value, plane) \
@@ -2810,11 +2806,9 @@ static void intel_read_wm_latency(struct drm_i915_private *dev_priv,
/* read the first set of memory latencies[0:3] */
val = 0; /* data0 to be programmed to 0 for first set */
- mutex_lock(&dev_priv->pcu_lock);
ret = sandybridge_pcode_read(dev_priv,
GEN9_PCODE_READ_MEM_LATENCY,
&val);
- mutex_unlock(&dev_priv->pcu_lock);
if (ret) {
DRM_ERROR("SKL Mailbox read error = %d\n", ret);
@@ -2831,11 +2825,9 @@ static void intel_read_wm_latency(struct drm_i915_private *dev_priv,
/* read the second set of memory latencies[4:7] */
val = 1; /* data0 to be programmed to 1 for second set */
- mutex_lock(&dev_priv->pcu_lock);
ret = sandybridge_pcode_read(dev_priv,
GEN9_PCODE_READ_MEM_LATENCY,
&val);
- mutex_unlock(&dev_priv->pcu_lock);
if (ret) {
DRM_ERROR("SKL Mailbox read error = %d\n", ret);
return;
@@ -3622,13 +3614,10 @@ intel_enable_sagv(struct drm_i915_private *dev_priv)
return 0;
DRM_DEBUG_KMS("Enabling the SAGV\n");
- mutex_lock(&dev_priv->pcu_lock);
-
ret = sandybridge_pcode_write(dev_priv, GEN9_PCODE_SAGV_CONTROL,
GEN9_SAGV_ENABLE);
/* We don't need to wait for the SAGV when enabling */
- mutex_unlock(&dev_priv->pcu_lock);
/*
* Some skl systems, pre-release machines in particular,
@@ -3659,15 +3648,11 @@ intel_disable_sagv(struct drm_i915_private *dev_priv)
return 0;
DRM_DEBUG_KMS("Disabling the SAGV\n");
- mutex_lock(&dev_priv->pcu_lock);
-
/* bspec says to keep retrying for at least 1 ms */
ret = skl_pcode_request(dev_priv, GEN9_PCODE_SAGV_CONTROL,
GEN9_SAGV_DISABLE,
GEN9_SAGV_IS_DISABLED, GEN9_SAGV_IS_DISABLED,
1);
- mutex_unlock(&dev_priv->pcu_lock);
-
/*
* Some skl systems, pre-release machines in particular,
* don't actually have an SAGV.
@@ -5684,7 +5669,6 @@ void vlv_wm_get_hw_state(struct drm_device *dev)
wm->level = VLV_WM_LEVEL_PM2;
if (IS_CHERRYVIEW(dev_priv)) {
- mutex_lock(&dev_priv->pcu_lock);
vlv_punit_get(dev_priv);
val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
@@ -5716,7 +5700,6 @@ void vlv_wm_get_hw_state(struct drm_device *dev)
}
vlv_punit_put(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
}
for_each_intel_crtc(dev, crtc) {
@@ -6324,7 +6307,7 @@ void gen6_rps_busy(struct drm_i915_private *dev_priv)
{
struct intel_rps *rps = &dev_priv->gt_pm.rps;
- mutex_lock(&dev_priv->pcu_lock);
+ mutex_lock(&rps->lock);
if (rps->enabled) {
u8 freq;
@@ -6347,7 +6330,7 @@ void gen6_rps_busy(struct drm_i915_private *dev_priv)
rps->max_freq_softlimit)))
DRM_DEBUG_DRIVER("Failed to set idle frequency\n");
}
- mutex_unlock(&dev_priv->pcu_lock);
+ mutex_unlock(&rps->lock);
}
void gen6_rps_idle(struct drm_i915_private *dev_priv)
@@ -6361,7 +6344,7 @@ void gen6_rps_idle(struct drm_i915_private *dev_priv)
*/
gen6_disable_rps_interrupts(dev_priv);
- mutex_lock(&dev_priv->pcu_lock);
+ mutex_lock(&rps->lock);
if (rps->enabled) {
if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
vlv_set_rps_idle(dev_priv);
@@ -6371,7 +6354,7 @@ void gen6_rps_idle(struct drm_i915_private *dev_priv)
I915_WRITE(GEN6_PMINTRMSK,
gen6_sanitize_rps_pm_mask(dev_priv, ~0));
}
- mutex_unlock(&dev_priv->pcu_lock);
+ mutex_unlock(&rps->lock);
}
void gen6_rps_boost(struct i915_request *rq,
@@ -6412,7 +6395,7 @@ int intel_set_rps(struct drm_i915_private *dev_priv, u8 val)
struct intel_rps *rps = &dev_priv->gt_pm.rps;
int err;
- lockdep_assert_held(&dev_priv->pcu_lock);
+ lockdep_assert_held(&rps->lock);
GEM_BUG_ON(val > rps->max_freq);
GEM_BUG_ON(val < rps->min_freq);
@@ -6911,7 +6894,7 @@ static void gen6_update_ring_freq(struct drm_i915_private *dev_priv)
int scaling_factor = 180;
struct cpufreq_policy *policy;
- WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
+ lockdep_assert_held(&rps->lock);
policy = cpufreq_cpu_get(0);
if (policy) {
@@ -7987,7 +7970,7 @@ void intel_init_gt_powersave(struct drm_i915_private *dev_priv)
intel_runtime_pm_get(dev_priv);
}
- mutex_lock(&dev_priv->pcu_lock);
+ mutex_lock(&rps->lock);
/* Initialize RPS limits (for userspace) */
if (IS_CHERRYVIEW(dev_priv))
@@ -8027,7 +8010,7 @@ void intel_init_gt_powersave(struct drm_i915_private *dev_priv)
/* Finally allow us to boost to max by default */
rps->boost_freq = rps->max_freq;
- mutex_unlock(&dev_priv->pcu_lock);
+ mutex_unlock(&rps->lock);
}
void intel_cleanup_gt_powersave(struct drm_i915_private *dev_priv)
@@ -8069,7 +8052,7 @@ void intel_sanitize_gt_powersave(struct drm_i915_private *dev_priv)
static inline void intel_disable_llc_pstate(struct drm_i915_private *i915)
{
- lockdep_assert_held(&i915->pcu_lock);
+ lockdep_assert_held(&i915->gt_pm.rps.lock);
if (!i915->gt_pm.llc_pstate.enabled)
return;
@@ -8081,7 +8064,7 @@ static inline void intel_disable_llc_pstate(struct drm_i915_private *i915)
static void intel_disable_rc6(struct drm_i915_private *dev_priv)
{
- lockdep_assert_held(&dev_priv->pcu_lock);
+ lockdep_assert_held(&dev_priv->gt_pm.rps.lock);
if (!dev_priv->gt_pm.rc6.enabled)
return;
@@ -8100,7 +8083,7 @@ static void intel_disable_rc6(struct drm_i915_private *dev_priv)
static void intel_disable_rps(struct drm_i915_private *dev_priv)
{
- lockdep_assert_held(&dev_priv->pcu_lock);
+ lockdep_assert_held(&dev_priv->gt_pm.rps.lock);
if (!dev_priv->gt_pm.rps.enabled)
return;
@@ -8121,19 +8104,19 @@ static void intel_disable_rps(struct drm_i915_private *dev_priv)
void intel_disable_gt_powersave(struct drm_i915_private *dev_priv)
{
- mutex_lock(&dev_priv->pcu_lock);
+ mutex_lock(&dev_priv->gt_pm.rps.lock);
intel_disable_rc6(dev_priv);
intel_disable_rps(dev_priv);
if (HAS_LLC(dev_priv))
intel_disable_llc_pstate(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
+ mutex_unlock(&dev_priv->gt_pm.rps.lock);
}
static inline void intel_enable_llc_pstate(struct drm_i915_private *i915)
{
- lockdep_assert_held(&i915->pcu_lock);
+ lockdep_assert_held(&i915->gt_pm.rps.lock);
if (i915->gt_pm.llc_pstate.enabled)
return;
@@ -8145,7 +8128,7 @@ static inline void intel_enable_llc_pstate(struct drm_i915_private *i915)
static void intel_enable_rc6(struct drm_i915_private *dev_priv)
{
- lockdep_assert_held(&dev_priv->pcu_lock);
+ lockdep_assert_held(&dev_priv->gt_pm.rps.lock);
if (dev_priv->gt_pm.rc6.enabled)
return;
@@ -8168,7 +8151,7 @@ static void intel_enable_rps(struct drm_i915_private *dev_priv)
{
struct intel_rps *rps = &dev_priv->gt_pm.rps;
- lockdep_assert_held(&dev_priv->pcu_lock);
+ lockdep_assert_held(&rps->lock);
if (rps->enabled)
return;
@@ -8205,7 +8188,7 @@ void intel_enable_gt_powersave(struct drm_i915_private *dev_priv)
if (intel_vgpu_active(dev_priv))
return;
- mutex_lock(&dev_priv->pcu_lock);
+ mutex_lock(&dev_priv->gt_pm.rps.lock);
if (HAS_RC6(dev_priv))
intel_enable_rc6(dev_priv);
@@ -8213,7 +8196,7 @@ void intel_enable_gt_powersave(struct drm_i915_private *dev_priv)
if (HAS_LLC(dev_priv))
intel_enable_llc_pstate(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
+ mutex_unlock(&dev_priv->gt_pm.rps.lock);
}
static void ibx_init_clock_gating(struct drm_i915_private *dev_priv)
@@ -9218,22 +9201,19 @@ static inline int gen7_check_mailbox_status(struct drm_i915_private *dev_priv)
}
}
-int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val)
+static int __sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val)
{
int status;
- WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
+ lockdep_assert_held(&dev_priv->sb_lock);
/* GEN6_PCODE_* are outside of the forcewake domain, we can
* use te fw I915_READ variants to reduce the amount of work
* required when reading/writing.
*/
- if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) {
- DRM_DEBUG_DRIVER("warning: pcode (read from mbox %x) mailbox access failed for %ps\n",
- mbox, __builtin_return_address(0));
+ if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY)
return -EAGAIN;
- }
I915_WRITE_FW(GEN6_PCODE_DATA, *val);
I915_WRITE_FW(GEN6_PCODE_DATA1, 0);
@@ -9241,11 +9221,8 @@ int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val
if (__intel_wait_for_register_fw(dev_priv,
GEN6_PCODE_MAILBOX, GEN6_PCODE_READY, 0,
- 500, 0, NULL)) {
- DRM_ERROR("timeout waiting for pcode read (from mbox %x) to finish for %ps\n",
- mbox, __builtin_return_address(0));
+ 500, 0, NULL))
return -ETIMEDOUT;
- }
*val = I915_READ_FW(GEN6_PCODE_DATA);
I915_WRITE_FW(GEN6_PCODE_DATA, 0);
@@ -9255,33 +9232,39 @@ int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val
else
status = gen6_check_mailbox_status(dev_priv);
+ return status;
+}
+
+int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val)
+{
+ int status;
+
+ mutex_lock(&dev_priv->sb_lock);
+ status = __sandybridge_pcode_read(dev_priv, mbox, val);
+ mutex_unlock(&dev_priv->sb_lock);
+
if (status) {
DRM_DEBUG_DRIVER("warning: pcode (read from mbox %x) mailbox access failed for %ps: %d\n",
mbox, __builtin_return_address(0), status);
- return status;
}
- return 0;
+ return status;
}
-int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
- u32 mbox, u32 val,
- int fast_timeout_us, int slow_timeout_ms)
+static int __sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
+ u32 mbox, u32 val,
+ int fast_timeout_us,
+ int slow_timeout_ms)
{
int status;
- WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
-
/* GEN6_PCODE_* are outside of the forcewake domain, we can
* use te fw I915_READ variants to reduce the amount of work
* required when reading/writing.
*/
- if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) {
- DRM_DEBUG_DRIVER("warning: pcode (write of 0x%08x to mbox %x) mailbox access failed for %ps\n",
- val, mbox, __builtin_return_address(0));
+ if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY)
return -EAGAIN;
- }
I915_WRITE_FW(GEN6_PCODE_DATA, val);
I915_WRITE_FW(GEN6_PCODE_DATA1, 0);
@@ -9290,11 +9273,8 @@ int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
if (__intel_wait_for_register_fw(dev_priv,
GEN6_PCODE_MAILBOX, GEN6_PCODE_READY, 0,
fast_timeout_us, slow_timeout_ms,
- NULL)) {
- DRM_ERROR("timeout waiting for pcode write of 0x%08x to mbox %x to finish for %ps\n",
- val, mbox, __builtin_return_address(0));
+ NULL))
return -ETIMEDOUT;
- }
I915_WRITE_FW(GEN6_PCODE_DATA, 0);
@@ -9303,13 +9283,28 @@ int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
else
status = gen6_check_mailbox_status(dev_priv);
+ return status;
+}
+
+int sandybridge_pcode_write_timeout(struct drm_i915_private *dev_priv,
+ u32 mbox, u32 val,
+ int fast_timeout_us,
+ int slow_timeout_ms)
+{
+ int status;
+
+ mutex_lock(&dev_priv->sb_lock);
+ status = __sandybridge_pcode_write_timeout(dev_priv, mbox, val,
+ fast_timeout_us,
+ slow_timeout_ms);
+ mutex_unlock(&dev_priv->sb_lock);
+
if (status) {
DRM_DEBUG_DRIVER("warning: pcode (write of 0x%08x to mbox %x) mailbox access failed for %ps: %d\n",
val, mbox, __builtin_return_address(0), status);
- return status;
}
- return 0;
+ return status;
}
static bool skl_pcode_try_request(struct drm_i915_private *dev_priv, u32 mbox,
@@ -9318,7 +9313,7 @@ static bool skl_pcode_try_request(struct drm_i915_private *dev_priv, u32 mbox,
{
u32 val = request;
- *status = sandybridge_pcode_read(dev_priv, mbox, &val);
+ *status = __sandybridge_pcode_read(dev_priv, mbox, &val);
return *status || ((val & reply_mask) == reply);
}
@@ -9348,7 +9343,7 @@ int skl_pcode_request(struct drm_i915_private *dev_priv, u32 mbox, u32 request,
u32 status;
int ret;
- WARN_ON(!mutex_is_locked(&dev_priv->pcu_lock));
+ mutex_lock(&dev_priv->sb_lock);
#define COND skl_pcode_try_request(dev_priv, mbox, request, reply_mask, reply, \
&status)
@@ -9384,6 +9379,7 @@ int skl_pcode_request(struct drm_i915_private *dev_priv, u32 mbox, u32 request,
preempt_enable();
out:
+ mutex_unlock(&dev_priv->sb_lock);
return ret ? ret : status;
#undef COND
}
@@ -9453,8 +9449,7 @@ int intel_freq_opcode(struct drm_i915_private *dev_priv, int val)
void intel_pm_setup(struct drm_i915_private *dev_priv)
{
- mutex_init(&dev_priv->pcu_lock);
-
+ mutex_init(&dev_priv->gt_pm.rps.lock);
atomic_set(&dev_priv->gt_pm.rps.num_waiters, 0);
dev_priv->runtime_pm.suspended = false;
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 069b6a30468f..2cc64f0fda57 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -815,7 +815,6 @@ static void vlv_set_power_well(struct drm_i915_private *dev_priv,
state = enable ? PUNIT_PWRGT_PWR_ON(power_well_id) :
PUNIT_PWRGT_PWR_GATE(power_well_id);
- mutex_lock(&dev_priv->pcu_lock);
vlv_punit_get(dev_priv);
#define COND \
@@ -838,7 +837,6 @@ static void vlv_set_power_well(struct drm_i915_private *dev_priv,
out:
vlv_punit_put(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
}
static void vlv_power_well_enable(struct drm_i915_private *dev_priv,
@@ -865,7 +863,6 @@ static bool vlv_power_well_enabled(struct drm_i915_private *dev_priv,
mask = PUNIT_PWRGT_MASK(power_well_id);
ctrl = PUNIT_PWRGT_PWR_ON(power_well_id);
- mutex_lock(&dev_priv->pcu_lock);
vlv_punit_get(dev_priv);
state = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_STATUS) & mask;
@@ -886,7 +883,6 @@ static bool vlv_power_well_enabled(struct drm_i915_private *dev_priv,
WARN_ON(ctrl != state);
vlv_punit_put(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
return enabled;
}
@@ -1398,7 +1394,6 @@ static bool chv_pipe_power_well_enabled(struct drm_i915_private *dev_priv,
bool enabled;
u32 state, ctrl;
- mutex_lock(&dev_priv->pcu_lock);
vlv_punit_get(dev_priv);
state = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) & DP_SSS_MASK(pipe);
@@ -1417,7 +1412,6 @@ static bool chv_pipe_power_well_enabled(struct drm_i915_private *dev_priv,
WARN_ON(ctrl << 16 != state);
vlv_punit_put(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
return enabled;
}
@@ -1432,7 +1426,6 @@ static void chv_set_pipe_power_well(struct drm_i915_private *dev_priv,
state = enable ? DP_SSS_PWR_ON(pipe) : DP_SSS_PWR_GATE(pipe);
- mutex_lock(&dev_priv->pcu_lock);
vlv_punit_get(dev_priv);
#define COND \
@@ -1455,7 +1448,6 @@ static void chv_set_pipe_power_well(struct drm_i915_private *dev_priv,
out:
vlv_punit_put(dev_priv);
- mutex_unlock(&dev_priv->pcu_lock);
}
static void chv_pipe_power_well_enable(struct drm_i915_private *dev_priv,
diff --git a/drivers/gpu/drm/i915/intel_sideband.c b/drivers/gpu/drm/i915/intel_sideband.c
index dc3b491b4d00..2d4e48e9e1d5 100644
--- a/drivers/gpu/drm/i915/intel_sideband.c
+++ b/drivers/gpu/drm/i915/intel_sideband.c
@@ -142,8 +142,6 @@ u32 vlv_punit_read(struct drm_i915_private *dev_priv, u32 addr)
{
u32 val = 0;
- lockdep_assert_held(&dev_priv->pcu_lock);
-
vlv_sideband_rw(dev_priv, PCI_DEVFN(0, 0), IOSF_PORT_PUNIT,
SB_CRRDDA_NP, addr, &val);
@@ -152,8 +150,6 @@ u32 vlv_punit_read(struct drm_i915_private *dev_priv, u32 addr)
int vlv_punit_write(struct drm_i915_private *dev_priv, u32 addr, u32 val)
{
- lockdep_assert_held(&dev_priv->pcu_lock);
-
return vlv_sideband_rw(dev_priv, PCI_DEVFN(0, 0), IOSF_PORT_PUNIT,
SB_CRWRDA_NP, addr, &val);
}
--
2.16.2
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 19+ messages in thread
* ✓ Fi.CI.BAT: success for series starting with [01/10] drm/i915: Disable preemption and sleeping while using the punit sideband (rev2)
2018-03-07 19:41 vlv punit and sideband tidy Chris Wilson
` (12 preceding siblings ...)
2018-03-07 21:02 ` ✗ Fi.CI.IGT: warning for series starting with [01/10] drm/i915: Disable preemption and sleeping while using the punit sideband Patchwork
@ 2018-03-08 20:38 ` Patchwork
2018-03-09 1:23 ` ✓ Fi.CI.IGT: " Patchwork
14 siblings, 0 replies; 19+ messages in thread
From: Patchwork @ 2018-03-08 20:38 UTC (permalink / raw)
To: Chris Wilson; +Cc: intel-gfx
== Series Details ==
Series: series starting with [01/10] drm/i915: Disable preemption and sleeping while using the punit sideband (rev2)
URL : https://patchwork.freedesktop.org/series/39555/
State : success
== Summary ==
Series 39555v2 series starting with [01/10] drm/i915: Disable preemption and sleeping while using the punit sideband
https://patchwork.freedesktop.org/api/1.0/series/39555/revisions/2/mbox/
---- Known issues:
Test debugfs_test:
Subgroup read_all_entries:
pass -> INCOMPLETE (fi-snb-2520m) fdo#103713
Test kms_chamelium:
Subgroup dp-crc-fast:
pass -> DMESG-FAIL (fi-kbl-7500u) fdo#103841
fdo#103713 https://bugs.freedesktop.org/show_bug.cgi?id=103713
fdo#103841 https://bugs.freedesktop.org/show_bug.cgi?id=103841
fi-bdw-5557u total:288 pass:267 dwarn:0 dfail:0 fail:0 skip:21 time:423s
fi-bdw-gvtdvm total:288 pass:264 dwarn:0 dfail:0 fail:0 skip:24 time:423s
fi-blb-e6850 total:288 pass:223 dwarn:1 dfail:0 fail:0 skip:64 time:370s
fi-bsw-n3050 total:288 pass:242 dwarn:0 dfail:0 fail:0 skip:46 time:501s
fi-bwr-2160 total:288 pass:183 dwarn:0 dfail:0 fail:0 skip:105 time:278s
fi-bxt-dsi total:288 pass:258 dwarn:0 dfail:0 fail:0 skip:30 time:493s
fi-bxt-j4205 total:288 pass:259 dwarn:0 dfail:0 fail:0 skip:29 time:487s
fi-byt-j1900 total:288 pass:253 dwarn:0 dfail:0 fail:0 skip:35 time:479s
fi-byt-n2820 total:288 pass:249 dwarn:0 dfail:0 fail:0 skip:39 time:468s
fi-cfl-8700k total:288 pass:260 dwarn:0 dfail:0 fail:0 skip:28 time:407s
fi-cfl-s2 total:288 pass:262 dwarn:0 dfail:0 fail:0 skip:26 time:577s
fi-elk-e7500 total:288 pass:229 dwarn:0 dfail:0 fail:0 skip:59 time:414s
fi-gdg-551 total:288 pass:179 dwarn:0 dfail:0 fail:1 skip:108 time:292s
fi-glk-1 total:288 pass:260 dwarn:0 dfail:0 fail:0 skip:28 time:515s
fi-hsw-4770 total:288 pass:261 dwarn:0 dfail:0 fail:0 skip:27 time:395s
fi-ilk-650 total:288 pass:228 dwarn:0 dfail:0 fail:0 skip:60 time:412s
fi-ivb-3520m total:288 pass:259 dwarn:0 dfail:0 fail:0 skip:29 time:470s
fi-ivb-3770 total:288 pass:255 dwarn:0 dfail:0 fail:0 skip:33 time:423s
fi-kbl-7500u total:288 pass:262 dwarn:1 dfail:1 fail:0 skip:24 time:467s
fi-kbl-7567u total:288 pass:268 dwarn:0 dfail:0 fail:0 skip:20 time:463s
fi-kbl-r total:288 pass:261 dwarn:0 dfail:0 fail:0 skip:27 time:511s
fi-pnv-d510 total:288 pass:222 dwarn:1 dfail:0 fail:0 skip:65 time:594s
fi-skl-6260u total:288 pass:268 dwarn:0 dfail:0 fail:0 skip:20 time:433s
fi-skl-6600u total:288 pass:261 dwarn:0 dfail:0 fail:0 skip:27 time:523s
fi-skl-6700hq total:288 pass:262 dwarn:0 dfail:0 fail:0 skip:26 time:534s
fi-skl-6700k2 total:288 pass:264 dwarn:0 dfail:0 fail:0 skip:24 time:498s
fi-skl-6770hq total:288 pass:268 dwarn:0 dfail:0 fail:0 skip:20 time:484s
fi-skl-guc total:288 pass:260 dwarn:0 dfail:0 fail:0 skip:28 time:422s
fi-snb-2520m total:3 pass:2 dwarn:0 dfail:0 fail:0 skip:0
fi-snb-2600 total:288 pass:248 dwarn:0 dfail:0 fail:0 skip:40 time:391s
Blacklisted hosts:
fi-cnl-drrs total:288 pass:255 dwarn:3 dfail:0 fail:2 skip:19 time:485s
fi-cnl-y3 failed to collect. IGT log at Patchwork_8277/fi-cnl-y3/run0.log
87ad36f3fa700da980f764c4e4184a38e1296560 drm-tip: 2018y-03m-08d-19h-40m-42s UTC integration manifest
86da0206b71d drm/i915: Move sandybride pcode access to intel_sideband.c
80f90fac4da3 drm/i915: Merge sandybridge_pcode_(read|write)
ec3612434469 drm/i915: Merge sbi read/write into a single accessor
ce521d082fb6 drm/i915: Separate sideband declarations to intel_sideband.h
2c8be91bb1d3 drm/i915: Replace pcu_lock with sb_lock
c07dbad89274 Revert "drm/i915: Avoid tweaking evaluation thresholds on Baytrail v3"
a76499db62c2 drm/i915: Reduce RPS update frequency on Valleyview/Cherryview
219d9d8c740e drm/i915: Lift sideband locking for vlv_punit_(read|write)
4dcb1da3ab87 drm/i915: Lift acquiring the vlv punit magic to a common sb-get
0bd6e0467372 drm/i915: Disable preemption and sleeping while using the punit sideband
== Logs ==
For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_8277/issues.html
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^ permalink raw reply [flat|nested] 19+ messages in thread
* ✓ Fi.CI.IGT: success for series starting with [01/10] drm/i915: Disable preemption and sleeping while using the punit sideband (rev2)
2018-03-07 19:41 vlv punit and sideband tidy Chris Wilson
` (13 preceding siblings ...)
2018-03-08 20:38 ` ✓ Fi.CI.BAT: success for series starting with [01/10] drm/i915: Disable preemption and sleeping while using the punit sideband (rev2) Patchwork
@ 2018-03-09 1:23 ` Patchwork
14 siblings, 0 replies; 19+ messages in thread
From: Patchwork @ 2018-03-09 1:23 UTC (permalink / raw)
To: Chris Wilson; +Cc: intel-gfx
== Series Details ==
Series: series starting with [01/10] drm/i915: Disable preemption and sleeping while using the punit sideband (rev2)
URL : https://patchwork.freedesktop.org/series/39555/
State : success
== Summary ==
---- Possible new issues:
Test kms_vblank:
Subgroup pipe-b-ts-continuation-suspend:
incomplete -> PASS (shard-snb)
---- Known issues:
Test drv_selftest:
Subgroup live_gtt:
incomplete -> PASS (shard-apl) fdo#103927
Test gem_eio:
Subgroup in-flight-external:
incomplete -> PASS (shard-apl) fdo#105341 +1
Test kms_cursor_crc:
Subgroup cursor-128x128-suspend:
pass -> INCOMPLETE (shard-hsw) fdo#103540
Test kms_frontbuffer_tracking:
Subgroup fbc-suspend:
pass -> FAIL (shard-apl) fdo#101623
Test kms_sysfs_edid_timing:
warn -> PASS (shard-apl) fdo#100047
Test pm_lpsp:
Subgroup screens-disabled:
pass -> FAIL (shard-hsw) fdo#104941
fdo#103927 https://bugs.freedesktop.org/show_bug.cgi?id=103927
fdo#105341 https://bugs.freedesktop.org/show_bug.cgi?id=105341
fdo#103540 https://bugs.freedesktop.org/show_bug.cgi?id=103540
fdo#101623 https://bugs.freedesktop.org/show_bug.cgi?id=101623
fdo#100047 https://bugs.freedesktop.org/show_bug.cgi?id=100047
fdo#104941 https://bugs.freedesktop.org/show_bug.cgi?id=104941
shard-apl total:3467 pass:1825 dwarn:1 dfail:0 fail:9 skip:1632 time:12161s
shard-hsw total:3429 pass:1754 dwarn:1 dfail:0 fail:2 skip:1670 time:11059s
shard-snb total:3467 pass:1363 dwarn:1 dfail:0 fail:2 skip:2101 time:6890s
Blacklisted hosts:
shard-kbl total:3467 pass:1930 dwarn:15 dfail:1 fail:9 skip:1512 time:9173s
== Logs ==
For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_8277/shards.html
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^ permalink raw reply [flat|nested] 19+ messages in thread
end of thread, other threads:[~2018-03-09 1:23 UTC | newest]
Thread overview: 19+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-03-07 19:41 vlv punit and sideband tidy Chris Wilson
2018-03-07 19:41 ` [PATCH 01/10] drm/i915: Disable preemption and sleeping while using the punit sideband Chris Wilson
2018-03-07 19:41 ` [PATCH 02/10] drm/i915: Lift acquiring the vlv punit magic to a common sb-get Chris Wilson
2018-03-07 19:41 ` [PATCH 03/10] drm/i915: Lift sideband locking for vlv_punit_(read|write) Chris Wilson
2018-03-07 19:41 ` [PATCH 04/10] drm/i915: Reduce RPS update frequency on Valleyview/Cherryview Chris Wilson
2018-03-07 19:41 ` [PATCH 05/10] Revert "drm/i915: Avoid tweaking evaluation thresholds on Baytrail v3" Chris Wilson
2018-03-07 19:41 ` [PATCH 06/10] drm/i915: Replace pcu_lock with sb_lock Chris Wilson
2018-03-08 8:06 ` [06/10] " Hans de Goede
2018-03-08 19:49 ` [PATCH v2] " Chris Wilson
2018-03-07 19:41 ` [PATCH 07/10] drm/i915: Separate sideband declarations to intel_sideband.h Chris Wilson
2018-03-07 19:42 ` [PATCH 08/10] drm/i915: Merge sbi read/write into a single accessor Chris Wilson
2018-03-07 19:42 ` [PATCH 09/10] drm/i915: Merge sandybridge_pcode_(read|write) Chris Wilson
2018-03-07 19:42 ` [PATCH 10/10] drm/i915: Move sandybride pcode access to intel_sideband.c Chris Wilson
2018-03-07 20:18 ` ✓ Fi.CI.BAT: success for series starting with [01/10] drm/i915: Disable preemption and sleeping while using the punit sideband Patchwork
2018-03-07 20:39 ` vlv punit and sideband tidy Rogozhkin, Dmitry V
2018-03-08 16:49 ` Chris Wilson
2018-03-07 21:02 ` ✗ Fi.CI.IGT: warning for series starting with [01/10] drm/i915: Disable preemption and sleeping while using the punit sideband Patchwork
2018-03-08 20:38 ` ✓ Fi.CI.BAT: success for series starting with [01/10] drm/i915: Disable preemption and sleeping while using the punit sideband (rev2) Patchwork
2018-03-09 1:23 ` ✓ Fi.CI.IGT: " Patchwork
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