* [PATCH v2 0/3] Intel Speed Select interface changes for 5.11
@ 2020-12-07 18:15 Srinivas Pandruvada
2020-12-07 18:15 ` [PATCH v2 1/3] platform/x86: ISST: Check for unaligned mmio address Srinivas Pandruvada
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: Srinivas Pandruvada @ 2020-12-07 18:15 UTC (permalink / raw)
To: hdegoede, mgross; +Cc: platform-driver-x86, linux-kernel, Srinivas Pandruvada
v2
Fix sparse warnings reported by LKP.
Srinivas Pandruvada (3):
platform/x86: ISST: Check for unaligned mmio address
platform/x86: ISST: Allow configurable offset range
platform/x86: ISST: Change PCI device macros
.../intel_speed_select_if/isst_if_common.h | 8 +--
.../intel_speed_select_if/isst_if_mbox_pci.c | 4 +-
.../x86/intel_speed_select_if/isst_if_mmio.c | 49 ++++++++++++++-----
3 files changed, 42 insertions(+), 19 deletions(-)
--
2.25.4
^ permalink raw reply [flat|nested] 5+ messages in thread
* [PATCH v2 1/3] platform/x86: ISST: Check for unaligned mmio address
2020-12-07 18:15 [PATCH v2 0/3] Intel Speed Select interface changes for 5.11 Srinivas Pandruvada
@ 2020-12-07 18:15 ` Srinivas Pandruvada
2020-12-07 18:15 ` [PATCH v2 2/3] platform/x86: ISST: Allow configurable offset range Srinivas Pandruvada
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: Srinivas Pandruvada @ 2020-12-07 18:15 UTC (permalink / raw)
To: hdegoede, mgross; +Cc: platform-driver-x86, linux-kernel, Srinivas Pandruvada
The address should be aligned to 4 byte boundary. So send an error for
unaligned address.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
drivers/platform/x86/intel_speed_select_if/isst_if_mmio.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/platform/x86/intel_speed_select_if/isst_if_mmio.c b/drivers/platform/x86/intel_speed_select_if/isst_if_mmio.c
index aa17fd7817f8..e7e9808a1aed 100644
--- a/drivers/platform/x86/intel_speed_select_if/isst_if_mmio.c
+++ b/drivers/platform/x86/intel_speed_select_if/isst_if_mmio.c
@@ -42,6 +42,9 @@ static long isst_if_mmio_rd_wr(u8 *cmd_ptr, int *write_only, int resume)
if (io_reg->reg < 0x04 || io_reg->reg > 0xD0)
return -EINVAL;
+ if (io_reg->reg % 4)
+ return -EINVAL;
+
if (io_reg->read_write && !capable(CAP_SYS_ADMIN))
return -EPERM;
--
2.25.4
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH v2 2/3] platform/x86: ISST: Allow configurable offset range
2020-12-07 18:15 [PATCH v2 0/3] Intel Speed Select interface changes for 5.11 Srinivas Pandruvada
2020-12-07 18:15 ` [PATCH v2 1/3] platform/x86: ISST: Check for unaligned mmio address Srinivas Pandruvada
@ 2020-12-07 18:15 ` Srinivas Pandruvada
2020-12-07 18:15 ` [PATCH v2 3/3] platform/x86: ISST: Change PCI device macros Srinivas Pandruvada
2020-12-07 18:17 ` [PATCH v2 0/3] Intel Speed Select interface changes for 5.11 Hans de Goede
3 siblings, 0 replies; 5+ messages in thread
From: Srinivas Pandruvada @ 2020-12-07 18:15 UTC (permalink / raw)
To: hdegoede, mgross
Cc: platform-driver-x86, linux-kernel, Srinivas Pandruvada,
kernel test robot
The mmio offset range can be different based on the PCI device id. Here
for INTEL_RAPL_PRIO_DEVID_1, the range is increased from 45 to 64. Pass
the range as the driver_data. Also account for different ranges during
save/restore via suspend/resume callbacks.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
LKP test robot reported sparse warning. Added "Reported-by" as
suggested by the message.
.../x86/intel_speed_select_if/isst_if_mmio.c | 50 +++++++++++++------
1 file changed, 36 insertions(+), 14 deletions(-)
diff --git a/drivers/platform/x86/intel_speed_select_if/isst_if_mmio.c b/drivers/platform/x86/intel_speed_select_if/isst_if_mmio.c
index e7e9808a1aed..4c9020249989 100644
--- a/drivers/platform/x86/intel_speed_select_if/isst_if_mmio.c
+++ b/drivers/platform/x86/intel_speed_select_if/isst_if_mmio.c
@@ -20,15 +20,21 @@ struct isst_mmio_range {
int end;
};
-struct isst_mmio_range mmio_range[] = {
+static struct isst_mmio_range mmio_range_devid_0[] = {
{0x04, 0x14},
{0x20, 0xD0},
};
+static struct isst_mmio_range mmio_range_devid_1[] = {
+ {0x04, 0x14},
+ {0x20, 0x11C},
+};
+
struct isst_if_device {
void __iomem *punit_mmio;
u32 range_0[5];
- u32 range_1[45];
+ u32 range_1[64];
+ struct isst_mmio_range *mmio_range;
struct mutex mutex;
};
@@ -39,8 +45,6 @@ static long isst_if_mmio_rd_wr(u8 *cmd_ptr, int *write_only, int resume)
struct pci_dev *pdev;
io_reg = (struct isst_if_io_reg *)cmd_ptr;
- if (io_reg->reg < 0x04 || io_reg->reg > 0xD0)
- return -EINVAL;
if (io_reg->reg % 4)
return -EINVAL;
@@ -56,6 +60,10 @@ static long isst_if_mmio_rd_wr(u8 *cmd_ptr, int *write_only, int resume)
if (!punit_dev)
return -EINVAL;
+ if (io_reg->reg < punit_dev->mmio_range[0].beg ||
+ io_reg->reg > punit_dev->mmio_range[1].end)
+ return -EINVAL;
+
/*
* Ensure that operation is complete on a PCI device to avoid read
* write race by using per PCI device mutex.
@@ -74,8 +82,10 @@ static long isst_if_mmio_rd_wr(u8 *cmd_ptr, int *write_only, int resume)
}
static const struct pci_device_id isst_if_ids[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL, INTEL_RAPL_PRIO_DEVID_0)},
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL, INTEL_RAPL_PRIO_DEVID_1)},
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, INTEL_RAPL_PRIO_DEVID_0),
+ .driver_data = (kernel_ulong_t)&mmio_range_devid_0},
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, INTEL_RAPL_PRIO_DEVID_1),
+ .driver_data = (kernel_ulong_t)&mmio_range_devid_1},
{ 0 },
};
MODULE_DEVICE_TABLE(pci, isst_if_ids);
@@ -112,6 +122,7 @@ static int isst_if_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
mutex_init(&punit_dev->mutex);
pci_set_drvdata(pdev, punit_dev);
+ punit_dev->mmio_range = (struct isst_mmio_range *) ent->driver_data;
memset(&cb, 0, sizeof(cb));
cb.cmd_size = sizeof(struct isst_if_io_reg);
@@ -141,10 +152,15 @@ static int __maybe_unused isst_if_suspend(struct device *device)
for (i = 0; i < ARRAY_SIZE(punit_dev->range_0); ++i)
punit_dev->range_0[i] = readl(punit_dev->punit_mmio +
- mmio_range[0].beg + 4 * i);
- for (i = 0; i < ARRAY_SIZE(punit_dev->range_1); ++i)
- punit_dev->range_1[i] = readl(punit_dev->punit_mmio +
- mmio_range[1].beg + 4 * i);
+ punit_dev->mmio_range[0].beg + 4 * i);
+ for (i = 0; i < ARRAY_SIZE(punit_dev->range_1); ++i) {
+ u32 addr;
+
+ addr = punit_dev->mmio_range[1].beg + 4 * i;
+ if (addr > punit_dev->mmio_range[1].end)
+ break;
+ punit_dev->range_1[i] = readl(punit_dev->punit_mmio + addr);
+ }
return 0;
}
@@ -156,10 +172,16 @@ static int __maybe_unused isst_if_resume(struct device *device)
for (i = 0; i < ARRAY_SIZE(punit_dev->range_0); ++i)
writel(punit_dev->range_0[i], punit_dev->punit_mmio +
- mmio_range[0].beg + 4 * i);
- for (i = 0; i < ARRAY_SIZE(punit_dev->range_1); ++i)
- writel(punit_dev->range_1[i], punit_dev->punit_mmio +
- mmio_range[1].beg + 4 * i);
+ punit_dev->mmio_range[0].beg + 4 * i);
+ for (i = 0; i < ARRAY_SIZE(punit_dev->range_1); ++i) {
+ u32 addr;
+
+ addr = punit_dev->mmio_range[1].beg + 4 * i;
+ if (addr > punit_dev->mmio_range[1].end)
+ break;
+
+ writel(punit_dev->range_1[i], punit_dev->punit_mmio + addr);
+ }
return 0;
}
--
2.25.4
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH v2 3/3] platform/x86: ISST: Change PCI device macros
2020-12-07 18:15 [PATCH v2 0/3] Intel Speed Select interface changes for 5.11 Srinivas Pandruvada
2020-12-07 18:15 ` [PATCH v2 1/3] platform/x86: ISST: Check for unaligned mmio address Srinivas Pandruvada
2020-12-07 18:15 ` [PATCH v2 2/3] platform/x86: ISST: Allow configurable offset range Srinivas Pandruvada
@ 2020-12-07 18:15 ` Srinivas Pandruvada
2020-12-07 18:17 ` [PATCH v2 0/3] Intel Speed Select interface changes for 5.11 Hans de Goede
3 siblings, 0 replies; 5+ messages in thread
From: Srinivas Pandruvada @ 2020-12-07 18:15 UTC (permalink / raw)
To: hdegoede, mgross; +Cc: platform-driver-x86, linux-kernel, Srinivas Pandruvada
Use PCI_VDEVICE and PCI_DEVICE_DATA macros. No functional changes are
expected.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
.../platform/x86/intel_speed_select_if/isst_if_common.h | 8 ++++----
.../platform/x86/intel_speed_select_if/isst_if_mbox_pci.c | 4 ++--
drivers/platform/x86/intel_speed_select_if/isst_if_mmio.c | 6 ++----
3 files changed, 8 insertions(+), 10 deletions(-)
diff --git a/drivers/platform/x86/intel_speed_select_if/isst_if_common.h b/drivers/platform/x86/intel_speed_select_if/isst_if_common.h
index 4f6f7f0761fc..fdecdae248d7 100644
--- a/drivers/platform/x86/intel_speed_select_if/isst_if_common.h
+++ b/drivers/platform/x86/intel_speed_select_if/isst_if_common.h
@@ -10,11 +10,11 @@
#ifndef __ISST_IF_COMMON_H
#define __ISST_IF_COMMON_H
-#define INTEL_RAPL_PRIO_DEVID_0 0x3451
-#define INTEL_CFG_MBOX_DEVID_0 0x3459
+#define PCI_DEVICE_ID_INTEL_RAPL_PRIO_DEVID_0 0x3451
+#define PCI_DEVICE_ID_INTEL_CFG_MBOX_DEVID_0 0x3459
-#define INTEL_RAPL_PRIO_DEVID_1 0x3251
-#define INTEL_CFG_MBOX_DEVID_1 0x3259
+#define PCI_DEVICE_ID_INTEL_RAPL_PRIO_DEVID_1 0x3251
+#define PCI_DEVICE_ID_INTEL_CFG_MBOX_DEVID_1 0x3259
/*
* Validate maximum commands in a single request.
diff --git a/drivers/platform/x86/intel_speed_select_if/isst_if_mbox_pci.c b/drivers/platform/x86/intel_speed_select_if/isst_if_mbox_pci.c
index 95f01e7a87d5..a2a2d923e60c 100644
--- a/drivers/platform/x86/intel_speed_select_if/isst_if_mbox_pci.c
+++ b/drivers/platform/x86/intel_speed_select_if/isst_if_mbox_pci.c
@@ -146,8 +146,8 @@ static long isst_if_mbox_proc_cmd(u8 *cmd_ptr, int *write_only, int resume)
}
static const struct pci_device_id isst_if_mbox_ids[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL, INTEL_CFG_MBOX_DEVID_0)},
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL, INTEL_CFG_MBOX_DEVID_1)},
+ { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_CFG_MBOX_DEVID_0)},
+ { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_CFG_MBOX_DEVID_1)},
{ 0 },
};
MODULE_DEVICE_TABLE(pci, isst_if_mbox_ids);
diff --git a/drivers/platform/x86/intel_speed_select_if/isst_if_mmio.c b/drivers/platform/x86/intel_speed_select_if/isst_if_mmio.c
index 4c9020249989..ff49025ec085 100644
--- a/drivers/platform/x86/intel_speed_select_if/isst_if_mmio.c
+++ b/drivers/platform/x86/intel_speed_select_if/isst_if_mmio.c
@@ -82,10 +82,8 @@ static long isst_if_mmio_rd_wr(u8 *cmd_ptr, int *write_only, int resume)
}
static const struct pci_device_id isst_if_ids[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL, INTEL_RAPL_PRIO_DEVID_0),
- .driver_data = (kernel_ulong_t)&mmio_range_devid_0},
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL, INTEL_RAPL_PRIO_DEVID_1),
- .driver_data = (kernel_ulong_t)&mmio_range_devid_1},
+ { PCI_DEVICE_DATA(INTEL, RAPL_PRIO_DEVID_0, &mmio_range_devid_0)},
+ { PCI_DEVICE_DATA(INTEL, RAPL_PRIO_DEVID_1, &mmio_range_devid_1)},
{ 0 },
};
MODULE_DEVICE_TABLE(pci, isst_if_ids);
--
2.25.4
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH v2 0/3] Intel Speed Select interface changes for 5.11
2020-12-07 18:15 [PATCH v2 0/3] Intel Speed Select interface changes for 5.11 Srinivas Pandruvada
` (2 preceding siblings ...)
2020-12-07 18:15 ` [PATCH v2 3/3] platform/x86: ISST: Change PCI device macros Srinivas Pandruvada
@ 2020-12-07 18:17 ` Hans de Goede
3 siblings, 0 replies; 5+ messages in thread
From: Hans de Goede @ 2020-12-07 18:17 UTC (permalink / raw)
To: Srinivas Pandruvada, mgross; +Cc: platform-driver-x86, linux-kernel
Hi,
On 12/7/20 7:15 PM, Srinivas Pandruvada wrote:
> v2
> Fix sparse warnings reported by LKP.
>
> Srinivas Pandruvada (3):
> platform/x86: ISST: Check for unaligned mmio address
> platform/x86: ISST: Allow configurable offset range
> platform/x86: ISST: Change PCI device macros
I've already added these to the for-next branch of:
https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/
Please send the changes in this v2 as (a) follow-up
patch(es).
Regards,
Hans
^ permalink raw reply [flat|nested] 5+ messages in thread
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2020-12-07 18:15 [PATCH v2 0/3] Intel Speed Select interface changes for 5.11 Srinivas Pandruvada
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2020-12-07 18:15 ` [PATCH v2 2/3] platform/x86: ISST: Allow configurable offset range Srinivas Pandruvada
2020-12-07 18:15 ` [PATCH v2 3/3] platform/x86: ISST: Change PCI device macros Srinivas Pandruvada
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