* [PATCH v2 00/11] fbdev: Maintain device ownership with aperture helpers
@ 2022-07-18 7:23 Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 01/11] fbdev: Remove trailing whitespaces Thomas Zimmermann
` (10 more replies)
0 siblings, 11 replies; 21+ messages in thread
From: Thomas Zimmermann @ 2022-07-18 7:23 UTC (permalink / raw)
To: javierm, deller, daniel, sam, maxime
Cc: linux-fbdev, linux-staging, Thomas Zimmermann, dri-devel
Fbdev firmware drivers acquire ownership of framebuffer I/O ranges and
hand them over to native drivers during the boot process. Re-implement
this mechanism with aperture helpers and remove the respective fbdev
code.
This change allows to perform hand-over from DRM firmware drivers. In a
later patchset, device ownership can be moved from DRM and fbdev entirely
into aperture helpers.
Patches 1 and 4 are cleanups.
Patches 2 and 3 integrate EGA/VGA support into sysfb, although it's not
clear if the x86 architecture code actually still supports VGA graphics
mode.
Patches 5 to 10 replace fbdev's ownership management with aperture
helpers. This includes removal of conflicting framebuffer drivers,
removal of conflicting VGA drivers and registration of fbdev firmware
devices. Notably, many PCI-based fbdev drivers failed to remove firmware
devices until now; and therefore probably haven't worked correctly for
some time.
Patch 11 removes the implementation of fbdev ownership management.
The patchset has been tested by handing over device ownership between
firmware and native drivers of DRM and fbdev in various combinations.
v2:
* remove unused options handling from vga16fb (Javier)
* more elaborate commit messages (Javier)
* remove unused internal functions in fbmem.c
Thomas Zimmermann (11):
fbdev: Remove trailing whitespaces
fbdev/vga16fb: Create EGA/VGA devices in sysfb code
fbdev/vga16fb: Auto-generate module init/exit code
fbdev/core: Remove remove_conflicting_pci_framebuffers()
fbdev: Convert drivers to aperture helpers
fbdev: Remove conflicting devices on PCI bus
video/aperture: Disable and unregister sysfb devices via aperture
helpers
video: Provide constants for VGA I/O range
video/aperture: Remove conflicting VGA devices, if any
fbdev: Acquire framebuffer apertures for firmware devices
fbdev: Remove conflict-handling code
drivers/firmware/sysfb.c | 4 +
drivers/staging/sm750fb/sm750.c | 15 +-
drivers/video/aperture.c | 69 ++--
drivers/video/fbdev/arkfb.c | 5 +
drivers/video/fbdev/asiliantfb.c | 5 +
drivers/video/fbdev/aty/aty128fb.c | 57 ++--
drivers/video/fbdev/aty/atyfb_base.c | 7 +-
drivers/video/fbdev/aty/radeon_base.c | 83 +++--
drivers/video/fbdev/carminefb.c | 5 +
drivers/video/fbdev/chipsfb.c | 13 +-
drivers/video/fbdev/cirrusfb.c | 5 +
drivers/video/fbdev/core/fbmem.c | 213 ++-----------
drivers/video/fbdev/cyber2000fb.c | 5 +
drivers/video/fbdev/geode/gx1fb_core.c | 5 +
drivers/video/fbdev/geode/gxfb_core.c | 5 +
drivers/video/fbdev/geode/lxfb_core.c | 5 +
drivers/video/fbdev/gxt4500.c | 5 +
drivers/video/fbdev/hyperv_fb.c | 6 +-
drivers/video/fbdev/i740fb.c | 5 +
drivers/video/fbdev/i810/i810_main.c | 315 ++++++++++---------
drivers/video/fbdev/imsttfb.c | 36 ++-
drivers/video/fbdev/intelfb/intelfbdrv.c | 5 +
drivers/video/fbdev/kyro/fbdev.c | 5 +
drivers/video/fbdev/matrox/matroxfb_base.c | 5 +
drivers/video/fbdev/mb862xx/mb862xxfbdrv.c | 5 +
drivers/video/fbdev/neofb.c | 41 +--
drivers/video/fbdev/nvidia/nvidia.c | 7 +-
drivers/video/fbdev/pm2fb.c | 5 +
drivers/video/fbdev/pm3fb.c | 5 +
drivers/video/fbdev/pvr2fb.c | 5 +
drivers/video/fbdev/riva/fbdev.c | 67 ++--
drivers/video/fbdev/s3fb.c | 5 +
drivers/video/fbdev/savage/savagefb_driver.c | 5 +
drivers/video/fbdev/sis/sis_main.c | 5 +
drivers/video/fbdev/skeletonfb.c | 210 +++++++------
drivers/video/fbdev/sm712fb.c | 5 +
drivers/video/fbdev/sstfb.c | 43 +--
drivers/video/fbdev/sunxvr2500.c | 5 +
drivers/video/fbdev/sunxvr500.c | 5 +
drivers/video/fbdev/tdfxfb.c | 5 +
drivers/video/fbdev/tgafb.c | 17 +-
drivers/video/fbdev/tridentfb.c | 5 +
drivers/video/fbdev/vermilion/vermilion.c | 7 +-
drivers/video/fbdev/vga16fb.c | 191 +++++------
drivers/video/fbdev/via/via-core.c | 5 +
drivers/video/fbdev/vt8623fb.c | 5 +
include/linux/fb.h | 4 -
include/video/vga.h | 20 +-
48 files changed, 776 insertions(+), 784 deletions(-)
base-commit: ebea934e2651857c9b56cc80bf99460ee18a3592
--
2.36.1
^ permalink raw reply [flat|nested] 21+ messages in thread
* [PATCH v2 01/11] fbdev: Remove trailing whitespaces
2022-07-18 7:23 [PATCH v2 00/11] fbdev: Maintain device ownership with aperture helpers Thomas Zimmermann
@ 2022-07-18 7:23 ` Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 02/11] fbdev/vga16fb: Create EGA/VGA devices in sysfb code Thomas Zimmermann
` (9 subsequent siblings)
10 siblings, 0 replies; 21+ messages in thread
From: Thomas Zimmermann @ 2022-07-18 7:23 UTC (permalink / raw)
To: javierm, deller, daniel, sam, maxime
Cc: linux-fbdev, linux-staging, Thomas Zimmermann, dri-devel
Fix coding style. No functional changes.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
drivers/video/fbdev/aty/aty128fb.c | 52 ++---
drivers/video/fbdev/aty/radeon_base.c | 66 +++---
drivers/video/fbdev/chipsfb.c | 6 +-
drivers/video/fbdev/i810/i810_main.c | 310 +++++++++++++-------------
drivers/video/fbdev/imsttfb.c | 28 +--
drivers/video/fbdev/neofb.c | 36 +--
drivers/video/fbdev/riva/fbdev.c | 62 +++---
drivers/video/fbdev/skeletonfb.c | 202 ++++++++---------
drivers/video/fbdev/sstfb.c | 38 ++--
drivers/video/fbdev/tgafb.c | 10 +-
drivers/video/fbdev/vga16fb.c | 86 +++----
include/video/vga.h | 18 +-
12 files changed, 457 insertions(+), 457 deletions(-)
diff --git a/drivers/video/fbdev/aty/aty128fb.c b/drivers/video/fbdev/aty/aty128fb.c
index b26c81233b6b..5cdbbba2a013 100644
--- a/drivers/video/fbdev/aty/aty128fb.c
+++ b/drivers/video/fbdev/aty/aty128fb.c
@@ -23,7 +23,7 @@
* - Convert to new framebuffer API,
* fix colormap setting at 16 bits/pixel (565)
*
- * Paul Mundt
+ * Paul Mundt
* - PCI hotplug
*
* Jon Smirl <jonsmirl@yahoo.com>
@@ -520,13 +520,13 @@ static const struct fb_ops aty128fb_ops = {
* - endian conversions may possibly be avoided by
* using the other register aperture. TODO.
*/
-static inline u32 _aty_ld_le32(volatile unsigned int regindex,
+static inline u32 _aty_ld_le32(volatile unsigned int regindex,
const struct aty128fb_par *par)
{
return readl (par->regbase + regindex);
}
-static inline void _aty_st_le32(volatile unsigned int regindex, u32 val,
+static inline void _aty_st_le32(volatile unsigned int regindex, u32 val,
const struct aty128fb_par *par)
{
writel (val, par->regbase + regindex);
@@ -559,12 +559,12 @@ static inline void _aty_st_8(unsigned int regindex, u8 val,
static u32 _aty_ld_pll(unsigned int pll_index,
const struct aty128fb_par *par)
-{
+{
aty_st_8(CLOCK_CNTL_INDEX, pll_index & 0x3F);
return aty_ld_le32(CLOCK_CNTL_DATA);
}
-
+
static void _aty_st_pll(unsigned int pll_index, u32 val,
const struct aty128fb_par *par)
{
@@ -619,7 +619,7 @@ static int register_test(const struct aty128fb_par *par)
aty_st_le32(BIOS_0_SCRATCH, 0xAAAAAAAA);
if (aty_ld_le32(BIOS_0_SCRATCH) == 0xAAAAAAAA)
- flag = 1;
+ flag = 1;
}
aty_st_le32(BIOS_0_SCRATCH, val); // restore value
@@ -901,7 +901,7 @@ static void aty128_get_pllinfo(struct aty128fb_par *par,
bios_hdr = BIOS_IN16(0x48);
bios_pll = BIOS_IN16(bios_hdr + 0x30);
-
+
par->constants.ppll_max = BIOS_IN32(bios_pll + 0x16);
par->constants.ppll_min = BIOS_IN32(bios_pll + 0x12);
par->constants.xclk = BIOS_IN16(bios_pll + 0x08);
@@ -913,7 +913,7 @@ static void aty128_get_pllinfo(struct aty128fb_par *par,
par->constants.xclk, par->constants.ref_divider,
par->constants.ref_clk);
-}
+}
#ifdef CONFIG_X86
static void __iomem *aty128_find_mem_vbios(struct aty128fb_par *par)
@@ -925,7 +925,7 @@ static void __iomem *aty128_find_mem_vbios(struct aty128fb_par *par)
*/
u32 segstart;
unsigned char __iomem *rom_base = NULL;
-
+
for (segstart=0x000c0000; segstart<0x000f0000; segstart+=0x00001000) {
rom_base = ioremap(segstart, 0x10000);
if (rom_base == NULL)
@@ -1118,12 +1118,12 @@ static int aty128_var_to_crtc(const struct fb_var_screeninfo *var,
v_sync_wid = 1;
else if (v_sync_wid > 0x1f) /* 0x1f = max vwidth */
v_sync_wid = 0x1f;
-
+
v_sync_strt = v_disp + lower;
h_sync_pol = sync & FB_SYNC_HOR_HIGH_ACT ? 0 : 1;
v_sync_pol = sync & FB_SYNC_VERT_HIGH_ACT ? 0 : 1;
-
+
c_sync = sync & FB_SYNC_COMP_HIGH_ACT ? (1 << 4) : 0;
crtc->gen_cntl = 0x3000000L | c_sync | (dst << 8);
@@ -1301,11 +1301,11 @@ static void aty128_set_lcd_enable(struct aty128fb_par *par, int on)
aty_st_le32(LVDS_GEN_CNTL, reg);
#ifdef CONFIG_FB_ATY128_BACKLIGHT
aty128_bl_set_power(info, FB_BLANK_UNBLANK);
-#endif
+#endif
} else {
#ifdef CONFIG_FB_ATY128_BACKLIGHT
aty128_bl_set_power(info, FB_BLANK_POWERDOWN);
-#endif
+#endif
reg = aty_ld_le32(LVDS_GEN_CNTL);
reg |= LVDS_DISPLAY_DIS;
aty_st_le32(LVDS_GEN_CNTL, reg);
@@ -1481,7 +1481,7 @@ static int aty128_ddafifo(struct aty128_ddafifo *dsp,
* This actually sets the video mode.
*/
static int aty128fb_set_par(struct fb_info *info)
-{
+{
struct aty128fb_par *par = info->par;
u32 config;
int err;
@@ -1595,7 +1595,7 @@ static int aty128_encode_var(struct fb_var_screeninfo *var,
var->accel_flags = par->accel_flags;
return 0;
-}
+}
static int aty128fb_check_var(struct fb_var_screeninfo *var,
@@ -1979,12 +1979,12 @@ static int aty128_init(struct pci_dev *pdev, const struct pci_device_id *ent)
/* PowerBook Titanium */
if (of_machine_is_compatible("PowerBook3,2"))
default_vmode = VMODE_1152_768_60;
-
- if (default_cmode > 16)
+
+ if (default_cmode > 16)
default_cmode = CMODE_32;
- else if (default_cmode > 8)
+ else if (default_cmode > 8)
default_cmode = CMODE_16;
- else
+ else
default_cmode = CMODE_8;
if (mac_vmode_to_var(default_vmode, default_cmode, &var))
@@ -1994,7 +1994,7 @@ static int aty128_init(struct pci_dev *pdev, const struct pci_device_id *ent)
#endif /* CONFIG_PPC_PMAC */
{
if (mode_option)
- if (fb_find_mode(&var, info, mode_option, NULL,
+ if (fb_find_mode(&var, info, mode_option, NULL,
0, &defaultmode, 8) == 0)
var = default_var;
}
@@ -2301,7 +2301,7 @@ static int aty128fb_ioctl(struct fb_info *info, u_int cmd, u_long arg)
struct aty128fb_par *par = info->par;
u32 value;
int rc;
-
+
switch (cmd) {
case FBIO_ATY128_SET_MIRROR:
if (par->chip_gen != rage_M3)
@@ -2313,8 +2313,8 @@ static int aty128fb_ioctl(struct fb_info *info, u_int cmd, u_long arg)
par->crt_on = (value & 0x02) != 0;
if (!par->crt_on && !par->lcd_on)
par->lcd_on = 1;
- aty128_set_crt_enable(par, par->crt_on);
- aty128_set_lcd_enable(par, par->lcd_on);
+ aty128_set_crt_enable(par, par->crt_on);
+ aty128_set_lcd_enable(par, par->lcd_on);
return 0;
case FBIO_ATY128_GET_MIRROR:
if (par->chip_gen != rage_M3)
@@ -2331,7 +2331,7 @@ static void aty128_set_suspend(struct aty128fb_par *par, int suspend)
if (!par->pdev->pm_cap)
return;
-
+
/* Set the chip into the appropriate suspend mode (we use D2,
* D3 would require a complete re-initialisation of the chip,
* including PCI config registers, clocks, AGP configuration, ...)
@@ -2376,12 +2376,12 @@ static int aty128_pci_suspend_late(struct device *dev, pm_message_t state)
*/
return 0;
#endif /* CONFIG_PPC_PMAC */
-
+
if (state.event == pdev->dev.power.power_state.event)
return 0;
printk(KERN_DEBUG "aty128fb: suspending...\n");
-
+
console_lock();
fb_set_suspend(info, 1);
diff --git a/drivers/video/fbdev/aty/radeon_base.c b/drivers/video/fbdev/aty/radeon_base.c
index 6851f47613e1..b311c07fe66d 100644
--- a/drivers/video/fbdev/aty/radeon_base.c
+++ b/drivers/video/fbdev/aty/radeon_base.c
@@ -7,7 +7,7 @@
* Copyright 2000 Ani Joshi <ajoshi@kernel.crashing.org>
*
* i2c bits from Luca Tettamanti <kronos@kronoz.cjb.net>
- *
+ *
* Special thanks to ATI DevRel team for their hardware donations.
*
* ...Insert GPL boilerplate here...
@@ -110,7 +110,7 @@ static const struct pci_device_id radeonfb_pci_table[] = {
/* Radeon IGP320M (U1) */
CHIP_DEF(PCI_CHIP_RS100_4336, RS100, CHIP_HAS_CRTC2 | CHIP_IS_IGP | CHIP_IS_MOBILITY),
/* Radeon IGP320 (A3) */
- CHIP_DEF(PCI_CHIP_RS100_4136, RS100, CHIP_HAS_CRTC2 | CHIP_IS_IGP),
+ CHIP_DEF(PCI_CHIP_RS100_4136, RS100, CHIP_HAS_CRTC2 | CHIP_IS_IGP),
/* IGP330M/340M/350M (U2) */
CHIP_DEF(PCI_CHIP_RS200_4337, RS200, CHIP_HAS_CRTC2 | CHIP_IS_IGP | CHIP_IS_MOBILITY),
/* IGP330/340/350 (A4) */
@@ -240,7 +240,7 @@ typedef struct {
* interfere with anything
*/
static reg_val common_regs[] = {
- { OVR_CLR, 0 },
+ { OVR_CLR, 0 },
{ OVR_WID_LEFT_RIGHT, 0 },
{ OVR_WID_TOP_BOTTOM, 0 },
{ OV0_SCALE_CNTL, 0 },
@@ -255,7 +255,7 @@ static reg_val common_regs[] = {
/*
* globals
*/
-
+
static char *mode_option;
static char *monitor_layout;
static bool noaccel = 0;
@@ -422,7 +422,7 @@ static int radeon_map_ROM(struct radeonfb_info *rinfo, struct pci_dev *dev)
* ROM somewhere in the first meg. We will just ignore the copy
* and use the ROM directly.
*/
-
+
/* Fix from ATI for problem with Radeon hardware not leaving ROM enabled */
unsigned int temp;
temp = INREG(MPP_TB_CONFIG);
@@ -430,14 +430,14 @@ static int radeon_map_ROM(struct radeonfb_info *rinfo, struct pci_dev *dev)
temp |= 0x04 << 24;
OUTREG(MPP_TB_CONFIG, temp);
temp = INREG(MPP_TB_CONFIG);
-
+
rom = pci_map_rom(dev, &rom_size);
if (!rom) {
printk(KERN_ERR "radeonfb (%s): ROM failed to map\n",
pci_name(rinfo->pdev));
return -ENOMEM;
}
-
+
rinfo->bios_seg = rom;
/* Very simple test to make sure it appeared */
@@ -515,7 +515,7 @@ static int radeon_find_mem_vbios(struct radeonfb_info *rinfo)
*/
u32 segstart;
void __iomem *rom_base = NULL;
-
+
for(segstart=0x000c0000; segstart<0x000f0000; segstart+=0x00001000) {
rom_base = ioremap(segstart, 0x10000);
if (rom_base == NULL)
@@ -605,16 +605,16 @@ static int radeon_probe_pll_params(struct radeonfb_info *rinfo)
for(i=0; i<1000000; i++)
if (((INREG(CRTC_VLINE_CRNT_VLINE) >> 16) & 0x3ff) == 0)
break;
-
+
stop_time = ktime_get();
-
+
local_irq_enable();
total_usecs = ktime_us_delta(stop_time, start_time);
if (total_usecs >= 10 * USEC_PER_SEC || total_usecs == 0)
return -1;
hz = USEC_PER_SEC/(u32)total_usecs;
-
+
hTotal = ((INREG(CRTC_H_TOTAL_DISP) & 0x1ff) + 1) * 8;
vTotal = ((INREG(CRTC_V_TOTAL_DISP) & 0x3ff) + 1);
vclk = (long long)hTotal * (long long)vTotal * hz;
@@ -662,7 +662,7 @@ static int radeon_probe_pll_params(struct radeonfb_info *rinfo)
denom *= 3;
break;
case 6:
- denom *= 6;
+ denom *= 6;
break;
case 7:
denom *= 12;
@@ -878,7 +878,7 @@ static int radeonfb_check_var (struct fb_var_screeninfo *var, struct fb_info *in
v.green.length = 6;
v.blue.length = 5;
v.transp.offset = v.transp.length = 0;
- break;
+ break;
case 24:
nom = 4;
den = 1;
@@ -908,7 +908,7 @@ static int radeonfb_check_var (struct fb_var_screeninfo *var, struct fb_info *in
v.yres_virtual = v.yres;
if (v.xres_virtual < v.xres)
v.xres_virtual = v.xres;
-
+
/* XXX I'm adjusting xres_virtual to the pitch, that may help XFree
* with some panels, though I don't quite like this solution
@@ -929,14 +929,14 @@ static int radeonfb_check_var (struct fb_var_screeninfo *var, struct fb_info *in
if (v.xoffset > v.xres_virtual - v.xres)
v.xoffset = v.xres_virtual - v.xres - 1;
-
+
if (v.yoffset > v.yres_virtual - v.yres)
v.yoffset = v.yres_virtual - v.yres - 1;
-
+
v.red.msb_right = v.green.msb_right = v.blue.msb_right =
v.transp.offset = v.transp.length =
v.transp.msb_right = 0;
-
+
memcpy(var, &v, sizeof(v));
return 0;
@@ -951,7 +951,7 @@ static int radeonfb_pan_display (struct fb_var_screeninfo *var,
if ((var->xoffset + info->var.xres > info->var.xres_virtual)
|| (var->yoffset + info->var.yres > info->var.yres_virtual))
return -EINVAL;
-
+
if (rinfo->asleep)
return 0;
@@ -1151,7 +1151,7 @@ static int radeonfb_blank (int blank, struct fb_info *info)
if (rinfo->asleep)
return 0;
-
+
return radeon_screen_blank(rinfo, blank, 0);
}
@@ -1401,7 +1401,7 @@ static void radeon_write_pll_regs(struct radeonfb_info *rinfo, struct radeon_reg
} else {
/* R300 uses ref_div_acc field as real ref divider */
OUTPLLP(PPLL_REF_DIV,
- (mode->ppll_ref_div << R300_PPLL_REF_DIV_ACC_SHIFT),
+ (mode->ppll_ref_div << R300_PPLL_REF_DIV_ACC_SHIFT),
~R300_PPLL_REF_DIV_ACC_MASK);
}
} else
@@ -1423,7 +1423,7 @@ static void radeon_write_pll_regs(struct radeonfb_info *rinfo, struct radeon_reg
workaround shouldn't have any effect on them. */
for (i = 0; (i < 10000 && INPLL(PPLL_REF_DIV) & PPLL_ATOMIC_UPDATE_R); i++)
;
-
+
OUTPLL(HTOTAL_CNTL, 0);
/* Clear reset & atomic update */
@@ -1510,7 +1510,7 @@ void radeon_write_mode (struct radeonfb_info *rinfo, struct radeon_regs *mode,
radeon_fifo_wait(2);
OUTPLL(VCLK_ECP_CNTL, mode->vclk_ecp_cntl);
-
+
return;
}
@@ -1735,7 +1735,7 @@ static int radeonfb_set_par(struct fb_info *info)
/* Clear auto-center etc... */
newmode->crtc_more_cntl = rinfo->init_state.crtc_more_cntl;
newmode->crtc_more_cntl &= 0xfffffff0;
-
+
if ((primary_mon == MT_DFP) || (primary_mon == MT_LCD)) {
newmode->crtc_ext_cntl = VGA_ATI_LINEAR | XCRT_CNT_EN;
if (mirror)
@@ -1793,7 +1793,7 @@ static int radeonfb_set_par(struct fb_info *info)
newmode->surface_cntl |= NONSURF_AP0_SWP_16BPP;
newmode->surface_cntl |= NONSURF_AP1_SWP_16BPP;
break;
- case 24:
+ case 24:
case 32:
newmode->surface_cntl |= NONSURF_AP0_SWP_32BPP;
newmode->surface_cntl |= NONSURF_AP1_SWP_32BPP;
@@ -2028,7 +2028,7 @@ static void fixup_memory_mappings(struct radeonfb_info *rinfo)
}
save_crtc_gen_cntl = INREG(CRTC_GEN_CNTL);
save_crtc_ext_cntl = INREG(CRTC_EXT_CNTL);
-
+
OUTREG(CRTC_EXT_CNTL, save_crtc_ext_cntl | CRTC_DISPLAY_DIS);
OUTREG(CRTC_GEN_CNTL, save_crtc_gen_cntl | CRTC_DISP_REQ_EN_B);
mdelay(100);
@@ -2038,7 +2038,7 @@ static void fixup_memory_mappings(struct radeonfb_info *rinfo)
#ifdef SET_MC_FB_FROM_APERTURE
/* Set framebuffer to be at the same address as set in PCI BAR */
- OUTREG(MC_FB_LOCATION,
+ OUTREG(MC_FB_LOCATION,
((aper_base + aper_size - 1) & 0xffff0000) | (aper_base >> 16));
rinfo->fb_local_base = aper_base;
#else
@@ -2079,7 +2079,7 @@ static void fixup_memory_mappings(struct radeonfb_info *rinfo)
OUTREG(CRTC_GEN_CNTL, save_crtc_gen_cntl);
OUTREG(CRTC_EXT_CNTL, save_crtc_ext_cntl);
if (rinfo->has_CRTC2)
- OUTREG(CRTC2_GEN_CNTL, save_crtc2_gen_cntl);
+ OUTREG(CRTC2_GEN_CNTL, save_crtc2_gen_cntl);
pr_debug("aper_base: %08x MC_FB_LOC to: %08x, MC_AGP_LOC to: %08x\n",
aper_base,
@@ -2265,7 +2265,7 @@ static int radeonfb_pci_register(struct pci_dev *pdev,
int err = 0;
pr_debug("radeonfb_pci_register BEGIN\n");
-
+
/* Enable device in PCI config */
ret = pci_enable_device(pdev);
if (ret < 0) {
@@ -2280,9 +2280,9 @@ static int radeonfb_pci_register(struct pci_dev *pdev,
goto err_disable;
}
rinfo = info->par;
- rinfo->info = info;
+ rinfo->info = info;
rinfo->pdev = pdev;
-
+
spin_lock_init(&rinfo->reg_lock);
timer_setup(&rinfo->lvds_timer, radeon_lvds_timer_func, 0);
@@ -2521,7 +2521,7 @@ static void radeonfb_pci_unregister(struct pci_dev *pdev)
{
struct fb_info *info = pci_get_drvdata(pdev);
struct radeonfb_info *rinfo = info->par;
-
+
if (!rinfo)
return;
@@ -2540,7 +2540,7 @@ static void radeonfb_pci_unregister(struct pci_dev *pdev)
iounmap(rinfo->mmio_base);
iounmap(rinfo->fb_base);
-
+
pci_release_region(pdev, 2);
pci_release_region(pdev, 0);
@@ -2550,7 +2550,7 @@ static void radeonfb_pci_unregister(struct pci_dev *pdev)
fb_destroy_modedb(rinfo->mon1_modedb);
#ifdef CONFIG_FB_RADEON_I2C
radeon_delete_i2c_busses(rinfo);
-#endif
+#endif
fb_dealloc_cmap(&info->cmap);
framebuffer_release(info);
}
diff --git a/drivers/video/fbdev/chipsfb.c b/drivers/video/fbdev/chipsfb.c
index 393894af26f8..618fb6dbbedb 100644
--- a/drivers/video/fbdev/chipsfb.c
+++ b/drivers/video/fbdev/chipsfb.c
@@ -122,7 +122,7 @@ static int chipsfb_set_par(struct fb_info *info)
info->var.blue.offset = 0;
info->var.red.length = info->var.green.length =
info->var.blue.length = 5;
-
+
} else {
/* p->var.bits_per_pixel == 8 */
write_cr(0x13, 100); // Set line length (doublewords)
@@ -131,13 +131,13 @@ static int chipsfb_set_par(struct fb_info *info)
write_xr(0x20, 0x00); // 8 bit blitter mode
info->fix.line_length = 800;
- info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
+ info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
info->var.red.offset = info->var.green.offset =
info->var.blue.offset = 0;
info->var.red.length = info->var.green.length =
info->var.blue.length = 8;
-
+
}
return 0;
}
diff --git a/drivers/video/fbdev/i810/i810_main.c b/drivers/video/fbdev/i810/i810_main.c
index 13bbf7fe13bf..41a86efca516 100644
--- a/drivers/video/fbdev/i810/i810_main.c
+++ b/drivers/video/fbdev/i810/i810_main.c
@@ -2,12 +2,12 @@
* linux/drivers/video/i810_main.c -- Intel 810 frame buffer device
*
* Copyright (C) 2001 Antonino Daplas<adaplas@pol.net>
- * All Rights Reserved
+ * All Rights Reserved
*
* Contributors:
* Michael Vogt <mvogt@acm.org> - added support for Intel 815 chipsets
- * and enabling the power-on state of
- * external VGA connectors for
+ * and enabling the power-on state of
+ * external VGA connectors for
* secondary displays
*
* Fredrik Andersson <krueger@shell.linux.se> - alpha testing of
@@ -17,10 +17,10 @@
* timings support
*
* The code framework is a modification of vfb.c by Geert Uytterhoeven.
- * DotClock and PLL calculations are partly based on i810_driver.c
+ * DotClock and PLL calculations are partly based on i810_driver.c
* in xfree86 v4.0.3 by Precision Insight.
- * Watermark calculation and tables are based on i810_wmark.c
- * in xfre86 v4.0.3 by Precision Insight. Slight modifications
+ * Watermark calculation and tables are based on i810_wmark.c
+ * in xfre86 v4.0.3 by Precision Insight. Slight modifications
* only to allow for integer operations instead of floating point.
*
* This file is subject to the terms and conditions of the GNU General Public
@@ -204,8 +204,8 @@ static void i810_dram_off(u8 __iomem *mmio, u8 mode)
* @mode: protect/unprotect
*
* DESCRIPTION:
- * The IBM VGA standard allows protection of certain VGA registers.
- * This will protect or unprotect them.
+ * The IBM VGA standard allows protection of certain VGA registers.
+ * This will protect or unprotect them.
*/
static void i810_protect_regs(u8 __iomem *mmio, int mode)
{
@@ -215,7 +215,7 @@ static void i810_protect_regs(u8 __iomem *mmio, int mode)
reg = i810_readb(CR_DATA_CGA, mmio);
reg = (mode == OFF) ? reg & ~0x80 :
reg | 0x80;
-
+
i810_writeb(CR_INDEX_CGA, mmio, CR11);
i810_writeb(CR_DATA_CGA, mmio, reg);
}
@@ -225,18 +225,18 @@ static void i810_protect_regs(u8 __iomem *mmio, int mode)
* @par: pointer to i810fb_par structure
*
* DESCRIPTION:
- * Loads the P, M, and N registers.
+ * Loads the P, M, and N registers.
*/
static void i810_load_pll(struct i810fb_par *par)
{
u32 tmp1, tmp2;
u8 __iomem *mmio = par->mmio_start_virtual;
-
+
tmp1 = par->regs.M | par->regs.N << 16;
tmp2 = i810_readl(DCLK_2D, mmio);
tmp2 &= ~MN_MASK;
i810_writel(DCLK_2D, mmio, tmp1 | tmp2);
-
+
tmp1 = par->regs.P;
tmp2 = i810_readl(DCLK_0DS, mmio);
tmp2 &= ~(P_OR << 16);
@@ -254,7 +254,7 @@ static void i810_load_pll(struct i810fb_par *par)
* Load values to VGA registers
*/
static void i810_load_vga(struct i810fb_par *par)
-{
+{
u8 __iomem *mmio = par->mmio_start_virtual;
/* interlace */
@@ -327,7 +327,7 @@ static void i810_load_2d(struct i810fb_par *par)
u8 tmp8;
u8 __iomem *mmio = par->mmio_start_virtual;
- i810_writel(FW_BLC, mmio, par->watermark);
+ i810_writel(FW_BLC, mmio, par->watermark);
tmp = i810_readl(PIXCONF, mmio);
tmp |= 1 | 1 << 20;
i810_writel(PIXCONF, mmio, tmp);
@@ -339,7 +339,7 @@ static void i810_load_2d(struct i810fb_par *par)
tmp8 |= 2;
i810_writeb(GR_INDEX, mmio, GR10);
i810_writeb(GR_DATA, mmio, tmp8);
-}
+}
/**
* i810_hires - enables high resolution mode
@@ -348,7 +348,7 @@ static void i810_load_2d(struct i810fb_par *par)
static void i810_hires(u8 __iomem *mmio)
{
u8 val;
-
+
i810_writeb(CR_INDEX_CGA, mmio, CR80);
val = i810_readb(CR_DATA_CGA, mmio);
i810_writeb(CR_INDEX_CGA, mmio, CR80);
@@ -363,13 +363,13 @@ static void i810_hires(u8 __iomem *mmio)
*
* DESCRIPTION:
* Loads the characters per line
- */
+ */
static void i810_load_pitch(struct i810fb_par *par)
{
u32 tmp, pitch;
u8 val;
u8 __iomem *mmio = par->mmio_start_virtual;
-
+
pitch = par->pitch >> 3;
i810_writeb(SR_INDEX, mmio, SR01);
val = i810_readb(SR_DATA, mmio);
@@ -381,7 +381,7 @@ static void i810_load_pitch(struct i810fb_par *par)
tmp = pitch & 0xFF;
i810_writeb(CR_INDEX_CGA, mmio, CR13);
i810_writeb(CR_DATA_CGA, mmio, (u8) tmp);
-
+
tmp = pitch >> 8;
i810_writeb(CR_INDEX_CGA, mmio, CR41);
val = i810_readb(CR_DATA_CGA, mmio) & ~0x0F;
@@ -414,7 +414,7 @@ static void i810_load_color(struct i810fb_par *par)
/**
* i810_load_regs - loads all registers for the mode
* @par: pointer to i810fb_par structure
- *
+ *
* DESCRIPTION:
* Loads registers
*/
@@ -428,7 +428,7 @@ static void i810_load_regs(struct i810fb_par *par)
i810_load_pll(par);
i810_load_vga(par);
i810_load_vgax(par);
- i810_dram_off(mmio, ON);
+ i810_dram_off(mmio, ON);
i810_load_2d(par);
i810_hires(mmio);
i810_screen_off(mmio, ON);
@@ -443,7 +443,7 @@ static void i810_write_dac(u8 regno, u8 red, u8 green, u8 blue,
i810_writeb(CLUT_INDEX_WRITE, mmio, regno);
i810_writeb(CLUT_DATA, mmio, red);
i810_writeb(CLUT_DATA, mmio, green);
- i810_writeb(CLUT_DATA, mmio, blue);
+ i810_writeb(CLUT_DATA, mmio, blue);
}
static void i810_read_dac(u8 regno, u8 *red, u8 *green, u8 *blue,
@@ -456,13 +456,13 @@ static void i810_read_dac(u8 regno, u8 *red, u8 *green, u8 *blue,
}
/************************************************************
- * VGA State Restore *
+ * VGA State Restore *
************************************************************/
static void i810_restore_pll(struct i810fb_par *par)
{
u32 tmp1, tmp2;
u8 __iomem *mmio = par->mmio_start_virtual;
-
+
tmp1 = par->hw_state.dclk_2d;
tmp2 = i810_readl(DCLK_2D, mmio);
tmp1 &= ~MN_MASK;
@@ -494,7 +494,7 @@ static void i810_restore_vgax(struct i810fb_par *par)
{
u8 i, j;
u8 __iomem *mmio = par->mmio_start_virtual;
-
+
for (i = 0; i < 4; i++) {
i810_writeb(CR_INDEX_CGA, mmio, CR30+i);
i810_writeb(CR_DATA_CGA, mmio, *(&(par->hw_state.cr30) + i));
@@ -528,7 +528,7 @@ static void i810_restore_vga(struct i810fb_par *par)
{
u8 i;
u8 __iomem *mmio = par->mmio_start_virtual;
-
+
for (i = 0; i < 10; i++) {
i810_writeb(CR_INDEX_CGA, mmio, CR00 + i);
i810_writeb(CR_DATA_CGA, mmio, *((&par->hw_state.cr00) + i));
@@ -559,10 +559,10 @@ static void i810_restore_2d(struct i810fb_par *par)
u8 __iomem *mmio = par->mmio_start_virtual;
tmp_word = i810_readw(BLTCNTL, mmio);
- tmp_word &= ~(3 << 4);
+ tmp_word &= ~(3 << 4);
tmp_word |= par->hw_state.bltcntl;
i810_writew(BLTCNTL, mmio, tmp_word);
-
+
i810_dram_off(mmio, OFF);
i810_writel(PIXCONF, mmio, par->hw_state.pixconf);
i810_dram_off(mmio, ON);
@@ -577,7 +577,7 @@ static void i810_restore_2d(struct i810fb_par *par)
tmp_long |= par->hw_state.fw_blc;
i810_writel(FW_BLC, mmio, tmp_long);
- i810_writel(HWS_PGA, mmio, par->hw_state.hws_pga);
+ i810_writel(HWS_PGA, mmio, par->hw_state.hws_pga);
i810_writew(IER, mmio, par->hw_state.ier);
i810_writew(IMR, mmio, par->hw_state.imr);
i810_writel(DPLYSTAS, mmio, par->hw_state.dplystas);
@@ -621,7 +621,7 @@ static void i810_save_vgax(struct i810fb_par *par)
i810_writeb(CR_INDEX_CGA, mmio, CR41);
par->hw_state.cr41 = i810_readb(CR_DATA_CGA, mmio);
i810_writeb(CR_INDEX_CGA, mmio, CR70);
- par->hw_state.cr70 = i810_readb(CR_DATA_CGA, mmio);
+ par->hw_state.cr70 = i810_readb(CR_DATA_CGA, mmio);
par->hw_state.msr = i810_readb(MSR_READ, mmio);
i810_writeb(CR_INDEX_CGA, mmio, CR80);
par->hw_state.cr80 = i810_readb(CR_DATA_CGA, mmio);
@@ -654,8 +654,8 @@ static void i810_save_2d(struct i810fb_par *par)
par->hw_state.pixconf = i810_readl(PIXCONF, mmio);
par->hw_state.fw_blc = i810_readl(FW_BLC, mmio);
par->hw_state.bltcntl = i810_readw(BLTCNTL, mmio);
- par->hw_state.hwstam = i810_readw(HWSTAM, mmio);
- par->hw_state.hws_pga = i810_readl(HWS_PGA, mmio);
+ par->hw_state.hwstam = i810_readw(HWSTAM, mmio);
+ par->hw_state.hws_pga = i810_readl(HWS_PGA, mmio);
par->hw_state.ier = i810_readw(IER, mmio);
par->hw_state.imr = i810_readw(IMR, mmio);
par->hw_state.dplystas = i810_readl(DPLYSTAS, mmio);
@@ -669,7 +669,7 @@ static void i810_save_vga_state(struct i810fb_par *par)
}
/************************************************************
- * Helpers *
+ * Helpers *
************************************************************/
/**
* get_line_length - calculates buffer pitch in bytes
@@ -678,12 +678,12 @@ static void i810_save_vga_state(struct i810fb_par *par)
* @bpp: bits per pixel
*
* DESCRIPTION:
- * Calculates buffer pitch in bytes.
+ * Calculates buffer pitch in bytes.
*/
static u32 get_line_length(struct i810fb_par *par, int xres_virtual, int bpp)
{
u32 length;
-
+
length = xres_virtual*bpp;
length = (length+31)&-32;
length >>= 3;
@@ -716,17 +716,17 @@ static void i810_calc_dclk(u32 freq, u32 *m, u32 *n, u32 *p)
n_target_max = 30;
/*
- * find P such that target freq is 16x reference freq (Hz).
+ * find P such that target freq is 16x reference freq (Hz).
*/
p_divisor = 1;
p_target = 0;
- while(!((1000000 * p_divisor)/(16 * 24 * target_freq)) &&
+ while(!((1000000 * p_divisor)/(16 * 24 * target_freq)) &&
p_divisor <= 32) {
p_divisor <<= 1;
p_target++;
}
- n_reg = m_reg = n_target = 3;
+ n_reg = m_reg = n_target = 3;
while (diff_min && mod_min && (n_target < n_target_max)) {
f_out = (p_divisor * n_reg * 1000000)/(4 * 24 * m_reg);
mod = (p_divisor * n_reg * 1000000) % (4 * 24 * m_reg);
@@ -744,14 +744,14 @@ static void i810_calc_dclk(u32 freq, u32 *m, u32 *n, u32 *p)
diff_min = diff;
n_best = n_target;
m_best = m_target;
- }
+ }
if (!diff && mod_min > mod) {
mod_min = mod;
n_best = n_target;
m_best = m_target;
}
- }
+ }
if (m) *m = (m_best - 2) & 0x3FF;
if (n) *n = (n_best - 2) & 0x3FF;
if (p) *p = (p_target << 4);
@@ -772,7 +772,7 @@ static void i810_calc_dclk(u32 freq, u32 *m, u32 *n, u32 *p)
static void i810_enable_cursor(u8 __iomem *mmio, int mode)
{
u32 temp;
-
+
temp = i810_readl(PIXCONF, mmio);
temp = (mode == ON) ? temp | CURSOR_ENABLE_MASK :
temp & ~CURSOR_ENABLE_MASK;
@@ -786,10 +786,10 @@ static void i810_reset_cursor_image(struct i810fb_par *par)
int i, j;
for (i = 64; i--; ) {
- for (j = 0; j < 8; j++) {
- i810_writeb(j, addr, 0xff);
- i810_writeb(j+8, addr, 0x00);
- }
+ for (j = 0; j < 8; j++) {
+ i810_writeb(j, addr, 0xff);
+ i810_writeb(j+8, addr, 0x00);
+ }
addr +=16;
}
}
@@ -800,9 +800,9 @@ static void i810_load_cursor_image(int width, int height, u8 *data,
u8 __iomem *addr = par->cursor_heap.virtual;
int i, j, w = width/8;
int mod = width % 8, t_mask, d_mask;
-
+
t_mask = 0xff >> mod;
- d_mask = ~(0xff >> mod);
+ d_mask = ~(0xff >> mod);
for (i = height; i--; ) {
for (j = 0; j < w; j++) {
i810_writeb(j+0, addr, 0x00);
@@ -854,7 +854,7 @@ static void i810_init_cursor(struct i810fb_par *par)
i810_enable_cursor(mmio, OFF);
i810_writel(CURBASE, mmio, par->cursor_heap.physical);
i810_writew(CURCNTR, mmio, COORD_ACTIVE | CURSOR_MODE_64_XOR);
-}
+}
/*********************************************************************
* Framebuffer hook helpers *
@@ -873,7 +873,7 @@ static void i810_round_off(struct fb_var_screeninfo *var)
u32 xres, yres, vxres, vyres;
/*
- * Presently supports only these configurations
+ * Presently supports only these configurations
*/
xres = var->xres;
@@ -883,20 +883,20 @@ static void i810_round_off(struct fb_var_screeninfo *var)
var->bits_per_pixel += 7;
var->bits_per_pixel &= ~7;
-
+
if (var->bits_per_pixel < 8)
var->bits_per_pixel = 8;
- if (var->bits_per_pixel > 32)
+ if (var->bits_per_pixel > 32)
var->bits_per_pixel = 32;
round_off_xres(&xres);
if (xres < 40)
xres = 40;
- if (xres > 2048)
+ if (xres > 2048)
xres = 2048;
xres = (xres + 7) & ~7;
- if (vxres < xres)
+ if (vxres < xres)
vxres = xres;
round_off_yres(&xres, &yres);
@@ -905,7 +905,7 @@ static void i810_round_off(struct fb_var_screeninfo *var)
if (yres >= 2048)
yres = 2048;
- if (vyres < yres)
+ if (vyres < yres)
vyres = yres;
if (var->bits_per_pixel == 32)
@@ -917,30 +917,30 @@ static void i810_round_off(struct fb_var_screeninfo *var)
var->hsync_len = (var->hsync_len + 4) & ~7;
if (var->vmode & FB_VMODE_INTERLACED) {
- if (!((yres + var->upper_margin + var->vsync_len +
+ if (!((yres + var->upper_margin + var->vsync_len +
var->lower_margin) & 1))
var->upper_margin++;
}
-
+
var->xres = xres;
var->yres = yres;
var->xres_virtual = vxres;
var->yres_virtual = vyres;
-}
+}
/**
* set_color_bitfields - sets rgba fields
* @var: pointer to fb_var_screeninfo
*
* DESCRIPTION:
- * The length, offset and ordering for each color field
- * (red, green, blue) will be set as specified
+ * The length, offset and ordering for each color field
+ * (red, green, blue) will be set as specified
* by the hardware
- */
+ */
static void set_color_bitfields(struct fb_var_screeninfo *var)
{
switch (var->bits_per_pixel) {
- case 8:
+ case 8:
var->red.offset = 0;
var->red.length = 8;
var->green.offset = 0;
@@ -984,11 +984,11 @@ static void set_color_bitfields(struct fb_var_screeninfo *var)
* @info: pointer to fb_info
*
* DESCRIPTION:
- * This will check if the framebuffer size is sufficient
- * for the current mode and if the user's monitor has the
+ * This will check if the framebuffer size is sufficient
+ * for the current mode and if the user's monitor has the
* required specifications to display the current mode.
*/
-static int i810_check_params(struct fb_var_screeninfo *var,
+static int i810_check_params(struct fb_var_screeninfo *var,
struct fb_info *info)
{
struct i810fb_par *par = info->par;
@@ -1007,14 +1007,14 @@ static int i810_check_params(struct fb_var_screeninfo *var,
vyres = info->var.yres;
vxres = par->fb.size/vyres;
vxres /= var->bits_per_pixel >> 3;
- line_length = get_line_length(par, vxres,
+ line_length = get_line_length(par, vxres,
var->bits_per_pixel);
vidmem = line_length * info->var.yres;
if (vxres < var->xres) {
printk("i810fb: required video memory, "
"%d bytes, for %dx%d-%d (virtual) "
- "is out of range\n",
- vidmem, vxres, vyres,
+ "is out of range\n",
+ vidmem, vxres, vyres,
var->bits_per_pixel);
return -ENOMEM;
}
@@ -1074,7 +1074,7 @@ static int i810_check_params(struct fb_var_screeninfo *var,
}
return retval;
-}
+}
/**
* encode_fix - fill up fb_fix_screeninfo structure
@@ -1131,9 +1131,9 @@ static int encode_fix(struct fb_fix_screeninfo *fix, struct fb_info *info)
*
* DESCRIPTION:
* Based on the contents of @var, @par will be dynamically filled up.
- * @par contains all information necessary to modify the hardware.
+ * @par contains all information necessary to modify the hardware.
*/
-static void decode_var(const struct fb_var_screeninfo *var,
+static void decode_var(const struct fb_var_screeninfo *var,
struct i810fb_par *par)
{
u32 xres, yres, vxres, vyres;
@@ -1175,13 +1175,13 @@ static void decode_var(const struct fb_var_screeninfo *var,
if (var->nonstd && var->bits_per_pixel != 8)
par->pixconf |= 1 << 27;
- i810_calc_dclk(var->pixclock, &par->regs.M,
+ i810_calc_dclk(var->pixclock, &par->regs.M,
&par->regs.N, &par->regs.P);
i810fb_encode_registers(var, par, xres, yres);
par->watermark = i810_get_watermark(var, par);
par->pitch = get_line_length(par, vxres, var->bits_per_pixel);
-}
+}
/**
* i810fb_getcolreg - gets red, green and blue values of the hardware DAC
@@ -1196,7 +1196,7 @@ static void decode_var(const struct fb_var_screeninfo *var,
* Gets the red, green and blue values of the hardware DAC as pointed by @regno
* and writes them to @red, @green and @blue respectively
*/
-static int i810fb_getcolreg(u8 regno, u8 *red, u8 *green, u8 *blue,
+static int i810fb_getcolreg(u8 regno, u8 *red, u8 *green, u8 *blue,
u8 *transp, struct fb_info *info)
{
struct i810fb_par *par = info->par;
@@ -1212,18 +1212,18 @@ static int i810fb_getcolreg(u8 regno, u8 *red, u8 *green, u8 *blue,
temp = i810_readb(PIXCONF1, mmio);
i810_writeb(PIXCONF1, mmio, temp & ~EXTENDED_PALETTE);
- if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
- info->var.green.length == 5)
+ if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
+ info->var.green.length == 5)
i810_read_dac(regno * 8, red, green, blue, mmio);
- else if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
+ else if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
info->var.green.length == 6) {
u8 tmp;
i810_read_dac(regno * 8, red, &tmp, blue, mmio);
i810_read_dac(regno * 4, &tmp, green, &tmp, mmio);
}
- else
+ else
i810_read_dac(regno, red, green, blue, mmio);
*transp = 0;
@@ -1232,7 +1232,7 @@ static int i810fb_getcolreg(u8 regno, u8 *red, u8 *green, u8 *blue,
return 0;
}
-/******************************************************************
+/******************************************************************
* Framebuffer device-specific hooks *
******************************************************************/
@@ -1252,7 +1252,7 @@ static int i810fb_open(struct fb_info *info, int user)
par->use_count++;
mutex_unlock(&par->open_lock);
-
+
return 0;
}
@@ -1273,13 +1273,13 @@ static int i810fb_release(struct fb_info *info, int user)
par->use_count--;
mutex_unlock(&par->open_lock);
-
+
return 0;
}
-static int i810fb_setcolreg(unsigned regno, unsigned red, unsigned green,
- unsigned blue, unsigned transp,
+static int i810fb_setcolreg(unsigned regno, unsigned red, unsigned green,
+ unsigned blue, unsigned transp,
struct fb_info *info)
{
struct i810fb_par *par = info->par;
@@ -1302,24 +1302,24 @@ static int i810fb_setcolreg(unsigned regno, unsigned red, unsigned green,
temp = i810_readb(PIXCONF1, mmio);
i810_writeb(PIXCONF1, mmio, temp & ~EXTENDED_PALETTE);
- if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
+ if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
info->var.green.length == 5) {
- for (i = 0; i < 8; i++)
- i810_write_dac((u8) (regno * 8) + i, (u8) red,
+ for (i = 0; i < 8; i++)
+ i810_write_dac((u8) (regno * 8) + i, (u8) red,
(u8) green, (u8) blue, mmio);
- } else if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
+ } else if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
info->var.green.length == 6) {
u8 r, g, b;
if (regno < 32) {
- for (i = 0; i < 8; i++)
+ for (i = 0; i < 8; i++)
i810_write_dac((u8) (regno * 8) + i,
- (u8) red, (u8) green,
+ (u8) red, (u8) green,
(u8) blue, mmio);
}
i810_read_dac((u8) (regno*4), &r, &g, &b, mmio);
- for (i = 0; i < 4; i++)
- i810_write_dac((u8) (regno*4) + i, r, (u8) green,
+ for (i = 0; i < 4; i++)
+ i810_write_dac((u8) (regno*4) + i, r, (u8) green,
b, mmio);
} else if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR) {
i810_write_dac((u8) regno, (u8) red, (u8) green,
@@ -1330,20 +1330,20 @@ static int i810fb_setcolreg(unsigned regno, unsigned red, unsigned green,
if (regno < 16) {
switch (info->var.bits_per_pixel) {
- case 16:
+ case 16:
if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
- if (info->var.green.length == 5)
- ((u32 *)info->pseudo_palette)[regno] =
+ if (info->var.green.length == 5)
+ ((u32 *)info->pseudo_palette)[regno] =
(regno << 10) | (regno << 5) |
regno;
else
- ((u32 *)info->pseudo_palette)[regno] =
+ ((u32 *)info->pseudo_palette)[regno] =
(regno << 11) | (regno << 5) |
regno;
} else {
if (info->var.green.length == 5) {
/* RGB 555 */
- ((u32 *)info->pseudo_palette)[regno] =
+ ((u32 *)info->pseudo_palette)[regno] =
((red & 0xf800) >> 1) |
((green & 0xf800) >> 6) |
((blue & 0xf800) >> 11);
@@ -1358,12 +1358,12 @@ static int i810fb_setcolreg(unsigned regno, unsigned red, unsigned green,
break;
case 24: /* RGB 888 */
case 32: /* RGBA 8888 */
- if (info->fix.visual == FB_VISUAL_DIRECTCOLOR)
- ((u32 *)info->pseudo_palette)[regno] =
+ if (info->fix.visual == FB_VISUAL_DIRECTCOLOR)
+ ((u32 *)info->pseudo_palette)[regno] =
(regno << 16) | (regno << 8) |
regno;
- else
- ((u32 *)info->pseudo_palette)[regno] =
+ else
+ ((u32 *)info->pseudo_palette)[regno] =
((red & 0xff00) << 8) |
(green & 0xff00) |
((blue & 0xff00) >> 8);
@@ -1373,13 +1373,13 @@ static int i810fb_setcolreg(unsigned regno, unsigned red, unsigned green,
return 0;
}
-static int i810fb_pan_display(struct fb_var_screeninfo *var,
+static int i810fb_pan_display(struct fb_var_screeninfo *var,
struct fb_info *info)
{
struct i810fb_par *par = info->par;
u32 total;
-
- total = var->xoffset * par->depth +
+
+ total = var->xoffset * par->depth +
var->yoffset * info->fix.line_length;
i810fb_load_front(total, info);
@@ -1391,7 +1391,7 @@ static int i810fb_blank (int blank_mode, struct fb_info *info)
struct i810fb_par *par = info->par;
u8 __iomem *mmio = par->mmio_start_virtual;
int mode = 0, pwr, scr_off = 0;
-
+
pwr = i810_readl(PWR_CLKC, mmio);
switch (blank_mode) {
@@ -1421,7 +1421,7 @@ static int i810fb_blank (int blank_mode, struct fb_info *info)
scr_off = OFF;
break;
default:
- return -EINVAL;
+ return -EINVAL;
}
i810_screen_off(mmio, scr_off);
@@ -1452,7 +1452,7 @@ static int i810fb_set_par(struct fb_info *info)
return 0;
}
-static int i810fb_check_var(struct fb_var_screeninfo *var,
+static int i810fb_check_var(struct fb_var_screeninfo *var,
struct fb_info *info)
{
int err;
@@ -1550,7 +1550,7 @@ static const struct fb_ops i810fb_ops = {
.fb_set_par = i810fb_set_par,
.fb_setcolreg = i810fb_setcolreg,
.fb_blank = i810fb_blank,
- .fb_pan_display = i810fb_pan_display,
+ .fb_pan_display = i810fb_pan_display,
.fb_fillrect = i810fb_fillrect,
.fb_copyarea = i810fb_copyarea,
.fb_imageblit = i810fb_imageblit,
@@ -1593,7 +1593,7 @@ static int i810fb_suspend(struct pci_dev *dev, pm_message_t mesg)
return 0;
}
-static int i810fb_resume(struct pci_dev *dev)
+static int i810fb_resume(struct pci_dev *dev)
{
struct fb_info *info = pci_get_drvdata(dev);
struct i810fb_par *par = info->par;
@@ -1628,14 +1628,14 @@ static int i810fb_resume(struct pci_dev *dev)
/***********************************************************************
* AGP resource allocation *
***********************************************************************/
-
+
static void i810_fix_pointers(struct i810fb_par *par)
{
par->fb.physical = par->aperture.physical+(par->fb.offset << 12);
par->fb.virtual = par->aperture.virtual+(par->fb.offset << 12);
- par->iring.physical = par->aperture.physical +
+ par->iring.physical = par->aperture.physical +
(par->iring.offset << 12);
- par->iring.virtual = par->aperture.virtual +
+ par->iring.virtual = par->aperture.virtual +
(par->iring.offset << 12);
par->cursor_heap.virtual = par->aperture.virtual+
(par->cursor_heap.offset << 12);
@@ -1666,7 +1666,7 @@ static int i810_alloc_agp_mem(struct fb_info *info)
struct i810fb_par *par = info->par;
int size;
struct agp_bridge_data *bridge;
-
+
i810_fix_offsets(par);
size = par->fb.size + par->iring.size;
@@ -1674,7 +1674,7 @@ static int i810_alloc_agp_mem(struct fb_info *info)
printk("i810fb_alloc_fbmem: cannot acquire agpgart\n");
return -ENODEV;
}
- if (!(par->i810_gtt.i810_fb_memory =
+ if (!(par->i810_gtt.i810_fb_memory =
agp_allocate_memory(bridge, size >> 12, AGP_NORMAL_MEMORY))) {
printk("i810fb_alloc_fbmem: can't allocate framebuffer "
"memory\n");
@@ -1686,9 +1686,9 @@ static int i810_alloc_agp_mem(struct fb_info *info)
printk("i810fb_alloc_fbmem: can't bind framebuffer memory\n");
agp_backend_release(bridge);
return -EBUSY;
- }
-
- if (!(par->i810_gtt.i810_cursor_memory =
+ }
+
+ if (!(par->i810_gtt.i810_cursor_memory =
agp_allocate_memory(bridge, par->cursor_heap.size >> 12,
AGP_PHYSICAL_MEMORY))) {
printk("i810fb_alloc_cursormem: can't allocate "
@@ -1701,7 +1701,7 @@ static int i810_alloc_agp_mem(struct fb_info *info)
printk("i810fb_alloc_cursormem: cannot bind cursor memory\n");
agp_backend_release(bridge);
return -EBUSY;
- }
+ }
par->cursor_heap.physical = par->i810_gtt.i810_cursor_memory->physical;
@@ -1712,8 +1712,8 @@ static int i810_alloc_agp_mem(struct fb_info *info)
return 0;
}
-/***************************************************************
- * Initialization *
+/***************************************************************
+ * Initialization *
***************************************************************/
/**
@@ -1728,7 +1728,7 @@ static void i810_init_monspecs(struct fb_info *info)
{
if (!hsync1)
hsync1 = HFMIN;
- if (!hsync2)
+ if (!hsync2)
hsync2 = HFMAX;
if (!info->monspecs.hfmax)
info->monspecs.hfmax = hsync2;
@@ -1739,7 +1739,7 @@ static void i810_init_monspecs(struct fb_info *info)
if (!vsync1)
vsync1 = VFMIN;
- if (!vsync2)
+ if (!vsync2)
vsync2 = VFMAX;
if (IS_DVT && vsync1 < 60)
vsync1 = 60;
@@ -1747,7 +1747,7 @@ static void i810_init_monspecs(struct fb_info *info)
info->monspecs.vfmax = vsync2;
if (!info->monspecs.vfmin)
info->monspecs.vfmin = vsync1;
- if (vsync2 < vsync1)
+ if (vsync2 < vsync1)
info->monspecs.vfmin = vsync2;
}
@@ -1760,27 +1760,27 @@ static void i810_init_defaults(struct i810fb_par *par, struct fb_info *info)
{
mutex_init(&par->open_lock);
- if (voffset)
+ if (voffset)
v_offset_default = voffset;
else if (par->aperture.size > 32 * 1024 * 1024)
v_offset_default = 16;
else
v_offset_default = 8;
- if (!vram)
+ if (!vram)
vram = 1;
- if (accel)
+ if (accel)
par->dev_flags |= HAS_ACCELERATION;
- if (sync)
+ if (sync)
par->dev_flags |= ALWAYS_SYNC;
par->ddc_num = (ddc3 ? 3 : 2);
if (bpp < 8)
bpp = 8;
-
+
par->i810fb_ops = i810fb_ops;
if (xres)
@@ -1793,7 +1793,7 @@ static void i810_init_defaults(struct i810fb_par *par, struct fb_info *info)
else
info->var.yres = 480;
- if (!vyres)
+ if (!vyres)
vyres = (vram << 20)/(info->var.xres*bpp >> 3);
info->var.yres_virtual = vyres;
@@ -1802,12 +1802,12 @@ static void i810_init_defaults(struct i810fb_par *par, struct fb_info *info)
if (dcolor)
info->var.nonstd = 1;
- if (par->dev_flags & HAS_ACCELERATION)
+ if (par->dev_flags & HAS_ACCELERATION)
info->var.accel_flags = 1;
i810_init_monspecs(info);
}
-
+
/**
* i810_init_device - initialize device
* @par: pointer to i810fb_par structure
@@ -1840,9 +1840,9 @@ static int i810_allocate_pci_resource(struct i810fb_par *par,
{
int err;
- if ((err = pci_enable_device(par->dev))) {
+ if ((err = pci_enable_device(par->dev))) {
printk("i810fb_init: cannot enable device\n");
- return err;
+ return err;
}
par->res_flags |= PCI_DEVICE_ENABLED;
@@ -1860,8 +1860,8 @@ static int i810_allocate_pci_resource(struct i810fb_par *par,
return -ENOMEM;
}
- if (!request_mem_region(par->aperture.physical,
- par->aperture.size,
+ if (!request_mem_region(par->aperture.physical,
+ par->aperture.size,
i810_pci_list[entry->driver_data])) {
printk("i810fb_init: cannot request framebuffer region\n");
return -ENODEV;
@@ -1874,16 +1874,16 @@ static int i810_allocate_pci_resource(struct i810fb_par *par,
printk("i810fb_init: cannot remap framebuffer region\n");
return -ENODEV;
}
-
- if (!request_mem_region(par->mmio_start_phys,
- MMIO_SIZE,
+
+ if (!request_mem_region(par->mmio_start_phys,
+ MMIO_SIZE,
i810_pci_list[entry->driver_data])) {
printk("i810fb_init: cannot request mmio region\n");
return -ENODEV;
}
par->res_flags |= MMIO_REQ;
- par->mmio_start_virtual = ioremap(par->mmio_start_phys,
+ par->mmio_start_virtual = ioremap(par->mmio_start_phys,
MMIO_SIZE);
if (!par->mmio_start_virtual) {
printk("i810fb_init: cannot remap mmio region\n");
@@ -1963,7 +1963,7 @@ static int i810fb_setup(char *options)
if (!options || !*options)
return 0;
-
+
while ((this_opt = strsep(&options, ",")) != NULL) {
if (!strncmp(this_opt, "mtrr", 4))
mtrr = true;
@@ -1987,13 +1987,13 @@ static int i810fb_setup(char *options)
bpp = simple_strtoul(this_opt+4, NULL, 0);
else if (!strncmp(this_opt, "hsync1:", 7)) {
hsync1 = simple_strtoul(this_opt+7, &suffix, 0);
- if (strncmp(suffix, "H", 1))
+ if (strncmp(suffix, "H", 1))
hsync1 *= 1000;
} else if (!strncmp(this_opt, "hsync2:", 7)) {
hsync2 = simple_strtoul(this_opt+7, &suffix, 0);
- if (strncmp(suffix, "H", 1))
+ if (strncmp(suffix, "H", 1))
hsync2 *= 1000;
- } else if (!strncmp(this_opt, "vsync1:", 7))
+ } else if (!strncmp(this_opt, "vsync1:", 7))
vsync1 = simple_strtoul(this_opt+7, NULL, 0);
else if (!strncmp(this_opt, "vsync2:", 7))
vsync2 = simple_strtoul(this_opt+7, NULL, 0);
@@ -2044,7 +2044,7 @@ static int i810fb_init_pci(struct pci_dev *dev,
return err;
}
- i810_init_device(par);
+ i810_init_device(par);
info->screen_base = par->fb.virtual;
info->fbops = &par->i810fb_ops;
@@ -2064,21 +2064,21 @@ static int i810fb_init_pci(struct pci_dev *dev,
err = register_framebuffer(info);
if (err < 0) {
- i810fb_release_resource(info, par);
+ i810fb_release_resource(info, par);
printk("i810fb_init: cannot register framebuffer device\n");
- return err;
- }
+ return err;
+ }
pci_set_drvdata(dev, info);
pixclock = 1000000000/(info->var.pixclock);
pixclock *= 1000;
- hfreq = pixclock/(info->var.xres + info->var.left_margin +
+ hfreq = pixclock/(info->var.xres + info->var.left_margin +
info->var.hsync_len + info->var.right_margin);
vfreq = hfreq/(info->var.yres + info->var.upper_margin +
info->var.vsync_len + info->var.lower_margin);
printk("I810FB: fb%d : %s v%d.%d.%d%s\n"
- "I810FB: Video RAM : %dK\n"
+ "I810FB: Video RAM : %dK\n"
"I810FB: Monitor : H: %d-%d KHz V: %d-%d Hz\n"
"I810FB: Mode : %dx%d-%dbpp@%dHz\n",
info->node,
@@ -2086,7 +2086,7 @@ static int i810fb_init_pci(struct pci_dev *dev,
VERSION_MAJOR, VERSION_MINOR, VERSION_TEENIE, BRANCH_VERSION,
(int) par->fb.size>>10, info->monspecs.hfmin/1000,
info->monspecs.hfmax/1000, info->monspecs.vfmin,
- info->monspecs.vfmax, info->var.xres,
+ info->monspecs.vfmax, info->var.xres,
info->var.yres, info->var.bits_per_pixel, vfreq);
return 0;
}
@@ -2095,7 +2095,7 @@ static int i810fb_init_pci(struct pci_dev *dev,
* De-initialization *
***************************************************************/
-static void i810fb_release_resource(struct fb_info *info,
+static void i810fb_release_resource(struct fb_info *info,
struct i810fb_par *par)
{
struct gtt_data *gtt = &par->i810_gtt;
@@ -2128,10 +2128,10 @@ static void i810fb_remove_pci(struct pci_dev *dev)
struct fb_info *info = pci_get_drvdata(dev);
struct i810fb_par *par = info->par;
- unregister_framebuffer(info);
+ unregister_framebuffer(info);
i810fb_release_resource(info, par);
printk("cleanup_module: unloaded i810 framebuffer device\n");
-}
+}
#ifndef MODULE
static int i810fb_init(void)
@@ -2144,7 +2144,7 @@ static int i810fb_init(void)
return pci_register_driver(&i810fb_driver);
}
-#endif
+#endif
/*********************************************************************
* Modularization *
@@ -2161,7 +2161,7 @@ static int i810fb_init(void)
}
module_param(vram, int, 0);
-MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB"
+MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB"
" (default=4)");
module_param(voffset, int, 0);
MODULE_PARM_DESC(voffset, "at what offset to place start of framebuffer "
@@ -2186,7 +2186,7 @@ module_param(vsync1, int, 0);
MODULE_PARM_DESC(vsync1, "Minimum vertical frequency of monitor in Hz"
" (default = 50)");
module_param(vsync2, int, 0);
-MODULE_PARM_DESC(vsync2, "Maximum vertical frequency of monitor in Hz"
+MODULE_PARM_DESC(vsync2, "Maximum vertical frequency of monitor in Hz"
" (default = 60)");
module_param(accel, bool, 0);
MODULE_PARM_DESC(accel, "Use Acceleration (BLIT) engine (default = 0)");
@@ -2208,7 +2208,7 @@ MODULE_PARM_DESC(mode_option, "Specify initial video mode");
MODULE_AUTHOR("Tony A. Daplas");
MODULE_DESCRIPTION("Framebuffer device for the Intel 810/815 and"
" compatible cards");
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL");
static void __exit i810fb_exit(void)
{
diff --git a/drivers/video/fbdev/imsttfb.c b/drivers/video/fbdev/imsttfb.c
index 16f272a50811..f489386855c0 100644
--- a/drivers/video/fbdev/imsttfb.c
+++ b/drivers/video/fbdev/imsttfb.c
@@ -86,7 +86,7 @@ enum {
SSTATUS = 36, /* 0x90 */
PRC = 37, /* 0x94 */
-#if 0
+#if 0
/* PCI Registers */
DVID = 0x00000000L,
SC = 0x00000004L,
@@ -103,8 +103,8 @@ enum {
PDATA = 0x04,
PPMASK = 0x08,
PADDRR = 0x0c,
- PIDXLO = 0x10,
- PIDXHI = 0x14,
+ PIDXLO = 0x10,
+ PIDXHI = 0x14,
PIDXDATA= 0x18,
PIDXCTL = 0x1c
};
@@ -131,7 +131,7 @@ enum {
SYSCLKC = 0x18, /* () System Clock C */
/*
* Dot clock rate is 20MHz * (m + 1) / ((n + 1) * (p ? 2 * p : 1)
- * c is charge pump bias which depends on the VCO frequency
+ * c is charge pump bias which depends on the VCO frequency
*/
PIXM0 = 0x20, /* () Pixel M 0 */
PIXN0 = 0x21, /* () Pixel N 0 */
@@ -320,7 +320,7 @@ struct imstt_par {
__u32 ramdac;
__u32 palette[16];
};
-
+
enum {
IBM = 0,
TVP = 1
@@ -373,7 +373,7 @@ static struct imstt_regvals tvp_reg_init_17 = {
static struct imstt_regvals tvp_reg_init_18 = {
1152,
- 0x0009, 0x0011, 0x059, 0x5b, 0x0003, 0x0031, 0x0397, 0x039a, 0x0000,
+ 0x0009, 0x0011, 0x059, 0x5b, 0x0003, 0x0031, 0x0397, 0x039a, 0x0000,
0xfd, 0x3a, 0xf1,
{ 0x39, 0x38, 0x38 }, { 0xf3, 0xf3, 0xf2 }
};
@@ -856,10 +856,10 @@ imsttfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
}
static int
-imsttfb_set_par(struct fb_info *info)
+imsttfb_set_par(struct fb_info *info)
{
struct imstt_par *par = info->par;
-
+
if (!compute_imstt_regvals(par, info->var.xres, info->var.yres))
return -EINVAL;
@@ -930,7 +930,7 @@ imsttfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
return 0;
}
-static int
+static int
imsttfb_blank(int blank, struct fb_info *info)
{
struct imstt_par *par = info->par;
@@ -986,7 +986,7 @@ imsttfb_blank(int blank, struct fb_info *info)
static void
imsttfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
-{
+{
struct imstt_par *par = info->par;
__u32 Bpp, line_pitch, bgc, dx, dy, width, height;
@@ -1192,7 +1192,7 @@ imstt_set_cursor(struct imstt_par *par, struct fb_image *d, int on)
}
}
-static int
+static int
imsttfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
{
struct imstt_par *par = info->par;
@@ -1200,7 +1200,7 @@ imsttfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
if (cursor->dest == NULL && cursor->rop == ROP_XOR)
return 1;
-
+
imstt_set_cursor(info, cursor, 0);
if (flags & FB_CUR_SETPOS) {
@@ -1470,7 +1470,7 @@ static int imsttfb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
struct fb_info *info;
struct device_node *dp;
int ret = -ENOMEM;
-
+
dp = pci_device_to_OF_node(pdev);
if(dp)
printk(KERN_INFO "%s: OF name %pOFn\n",__func__, dp);
@@ -1619,7 +1619,7 @@ static int __init imsttfb_init(void)
#endif
return pci_register_driver(&imsttfb_pci_driver);
}
-
+
static void __exit imsttfb_exit(void)
{
pci_unregister_driver(&imsttfb_pci_driver);
diff --git a/drivers/video/fbdev/neofb.c b/drivers/video/fbdev/neofb.c
index 28d32cbf496b..8ad2a79623af 100644
--- a/drivers/video/fbdev/neofb.c
+++ b/drivers/video/fbdev/neofb.c
@@ -23,9 +23,9 @@
*
* 0.3.3
* - Porting over to new fbdev api. (jsimmons)
- *
+ *
* 0.3.2
- * - got rid of all floating point (dok)
+ * - got rid of all floating point (dok)
*
* 0.3.1
* - added module license (dok)
@@ -1154,14 +1154,14 @@ static int neofb_set_par(struct fb_info *info)
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2200:
- case FB_ACCEL_NEOMAGIC_NM2230:
- case FB_ACCEL_NEOMAGIC_NM2360:
- case FB_ACCEL_NEOMAGIC_NM2380:
+ case FB_ACCEL_NEOMAGIC_NM2230:
+ case FB_ACCEL_NEOMAGIC_NM2360:
+ case FB_ACCEL_NEOMAGIC_NM2380:
neo2200_accel_init(info, &info->var);
break;
default:
break;
- }
+ }
return 0;
}
@@ -1493,15 +1493,15 @@ neofb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2200:
- case FB_ACCEL_NEOMAGIC_NM2230:
- case FB_ACCEL_NEOMAGIC_NM2360:
+ case FB_ACCEL_NEOMAGIC_NM2230:
+ case FB_ACCEL_NEOMAGIC_NM2360:
case FB_ACCEL_NEOMAGIC_NM2380:
neo2200_fillrect(info, rect);
break;
default:
cfb_fillrect(info, rect);
break;
- }
+ }
}
static void
@@ -1509,15 +1509,15 @@ neofb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
{
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2200:
- case FB_ACCEL_NEOMAGIC_NM2230:
- case FB_ACCEL_NEOMAGIC_NM2360:
- case FB_ACCEL_NEOMAGIC_NM2380:
+ case FB_ACCEL_NEOMAGIC_NM2230:
+ case FB_ACCEL_NEOMAGIC_NM2360:
+ case FB_ACCEL_NEOMAGIC_NM2380:
neo2200_copyarea(info, area);
break;
default:
cfb_copyarea(info, area);
break;
- }
+ }
}
static void
@@ -1536,20 +1536,20 @@ neofb_imageblit(struct fb_info *info, const struct fb_image *image)
}
}
-static int
+static int
neofb_sync(struct fb_info *info)
{
switch (info->fix.accel) {
case FB_ACCEL_NEOMAGIC_NM2200:
- case FB_ACCEL_NEOMAGIC_NM2230:
- case FB_ACCEL_NEOMAGIC_NM2360:
- case FB_ACCEL_NEOMAGIC_NM2380:
+ case FB_ACCEL_NEOMAGIC_NM2230:
+ case FB_ACCEL_NEOMAGIC_NM2360:
+ case FB_ACCEL_NEOMAGIC_NM2380:
neo2200_sync(info);
break;
default:
break;
}
- return 0;
+ return 0;
}
/*
diff --git a/drivers/video/fbdev/riva/fbdev.c b/drivers/video/fbdev/riva/fbdev.c
index 84d5e23ad7d3..5bafc44c591b 100644
--- a/drivers/video/fbdev/riva/fbdev.c
+++ b/drivers/video/fbdev/riva/fbdev.c
@@ -474,7 +474,7 @@ static inline void reverse_order(u32 *l)
* DESCRIPTiON:
* Loads cursor image based on a monochrome source and mask bitmap. The
* image bits determines the color of the pixel, 0 for background, 1 for
- * foreground. Only the affected region (as determined by @w and @h
+ * foreground. Only the affected region (as determined by @w and @h
* parameters) will be updated.
*
* CALLED FROM:
@@ -494,7 +494,7 @@ static void rivafb_load_cursor_image(struct riva_par *par, u8 *data8,
for (i = 0; i < h; i++) {
b = *data++;
reverse_order(&b);
-
+
for (j = 0; j < w/2; j++) {
tmp = 0;
#if defined (__BIG_ENDIAN)
@@ -562,7 +562,7 @@ static void riva_rclut(RIVA_HW_INST *chip,
unsigned char regnum, unsigned char *red,
unsigned char *green, unsigned char *blue)
{
-
+
VGA_WR08(chip->PDIO, 0x3c7, regnum);
*red = VGA_RD08(chip->PDIO, 0x3c9);
*green = VGA_RD08(chip->PDIO, 0x3c9);
@@ -673,7 +673,7 @@ static int riva_load_video_mode(struct fb_info *info)
int rc;
struct riva_par *par = info->par;
struct riva_regs newmode;
-
+
NVTRACE_ENTER();
/* time to calculate */
rivafb_blank(FB_BLANK_NORMAL, info);
@@ -717,7 +717,7 @@ static int riva_load_video_mode(struct fb_info *info)
hBlankEnd = hTotal + 4;
}
- newmode.crtc[0x0] = Set8Bits (hTotal);
+ newmode.crtc[0x0] = Set8Bits (hTotal);
newmode.crtc[0x1] = Set8Bits (hDisplay);
newmode.crtc[0x2] = Set8Bits (hBlankStart);
newmode.crtc[0x3] = SetBitField (hBlankEnd, 4: 0, 4:0) | SetBit (7);
@@ -748,20 +748,20 @@ static int riva_load_video_mode(struct fb_info *info)
| SetBitField(vStart,10:10,2:2)
| SetBitField(vDisplay,10:10,1:1)
| SetBitField(vTotal,10:10,0:0);
- newmode.ext.horiz = SetBitField(hTotal,8:8,0:0)
+ newmode.ext.horiz = SetBitField(hTotal,8:8,0:0)
| SetBitField(hDisplay,8:8,1:1)
| SetBitField(hBlankStart,8:8,2:2)
| SetBitField(hStart,8:8,3:3);
newmode.ext.extra = SetBitField(vTotal,11:11,0:0)
| SetBitField(vDisplay,11:11,2:2)
| SetBitField(vStart,11:11,4:4)
- | SetBitField(vBlankStart,11:11,6:6);
+ | SetBitField(vBlankStart,11:11,6:6);
if ((info->var.vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) {
int tmp = (hTotal >> 1) & ~1;
newmode.ext.interlace = Set8Bits(tmp);
newmode.ext.horiz |= SetBitField(tmp, 8:8,4:4);
- } else
+ } else
newmode.ext.interlace = 0xff; /* interlace off */
if (par->riva.Architecture >= NV_ARCH_10)
@@ -774,7 +774,7 @@ static int riva_load_video_mode(struct fb_info *info)
if (info->var.sync & FB_SYNC_VERT_HIGH_ACT)
newmode.misc_output &= ~0x80;
else
- newmode.misc_output |= 0x80;
+ newmode.misc_output |= 0x80;
rc = CalcStateExt(&par->riva, &newmode.ext, par->pdev, bpp, width,
hDisplaySize, height, dotClock);
@@ -841,7 +841,7 @@ static void riva_update_var(struct fb_var_screeninfo *var,
}
/**
- * rivafb_do_maximize -
+ * rivafb_do_maximize -
* @info: pointer to fb_info object containing info for current riva board
* @var: standard kernel fb changeable data
* @nom: nom
@@ -852,7 +852,7 @@ static void riva_update_var(struct fb_var_screeninfo *var,
*
* RETURNS:
* -EINVAL on failure, 0 on success
- *
+ *
*
* CALLED FROM:
* rivafb_check_var()
@@ -916,14 +916,14 @@ static int rivafb_do_maximize(struct fb_info *info,
return -EINVAL;
}
}
-
+
if (var->xres_virtual * nom / den >= 8192) {
printk(KERN_WARNING PFX
"virtual X resolution (%d) is too high, lowering to %d\n",
var->xres_virtual, 8192 * den / nom - 16);
var->xres_virtual = 8192 * den / nom - 16;
}
-
+
if (var->xres_virtual < var->xres) {
printk(KERN_ERR PFX
"virtual X resolution (%d) is smaller than real\n", var->xres_virtual);
@@ -1010,7 +1010,7 @@ static int riva_get_cmap_len(const struct fb_var_screeninfo *var)
break;
case 6:
rc = 64; /* 64 entries (2^6), 16 bpp, RGB565 */
- break;
+ break;
default:
/* should not occur */
break;
@@ -1042,7 +1042,7 @@ static int rivafb_open(struct fb_info *info, int user)
/* vgaHWunlock() + riva unlock (0x7F) */
CRTCout(par, 0x11, 0xFF);
par->riva.LockUnlock(&par->riva, 0);
-
+
riva_save_state(par, &par->initial_state);
}
par->ref_count++;
@@ -1082,7 +1082,7 @@ static int rivafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
struct riva_par *par = info->par;
int nom, den; /* translating from pixels->bytes */
int mode_valid = 0;
-
+
NVTRACE_ENTER();
if (!var->pixclock)
return -EINVAL;
@@ -1176,7 +1176,7 @@ static int rivafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
if (var->yoffset > var->yres_virtual - var->yres)
var->yoffset = var->yres_virtual - var->yres - 1;
- var->red.msb_right =
+ var->red.msb_right =
var->green.msb_right =
var->blue.msb_right =
var->transp.offset = var->transp.length = var->transp.msb_right = 0;
@@ -1198,7 +1198,7 @@ static int rivafb_set_par(struct fb_info *info)
goto out;
if(!(info->flags & FBINFO_HWACCEL_DISABLED))
riva_setup_accel(info);
-
+
par->cursor_reset = 1;
info->fix.line_length = (info->var.xres_virtual * (info->var.bits_per_pixel >> 3));
info->fix.visual = (info->var.bits_per_pixel == 8) ?
@@ -1486,7 +1486,7 @@ static inline void convert_bgcolor_16(u32 *col)
* CALLED FROM:
* framebuffer hook
*/
-static void rivafb_imageblit(struct fb_info *info,
+static void rivafb_imageblit(struct fb_info *info,
const struct fb_image *image)
{
struct riva_par *par = info->par;
@@ -1515,7 +1515,7 @@ static void rivafb_imageblit(struct fb_info *info,
bgx = par->palette[image->bg_color];
}
if (info->var.green.length == 6)
- convert_bgcolor_16(&bgx);
+ convert_bgcolor_16(&bgx);
break;
}
@@ -1612,7 +1612,7 @@ static int rivafb_cursor(struct fb_info *info, struct fb_cursor *cursor)
u8 *dat = (u8 *) cursor->image.data;
u8 *msk = (u8 *) cursor->mask;
u8 *src;
-
+
src = kmalloc_array(s_pitch, cursor->image.height, GFP_ATOMIC);
if (src) {
@@ -1683,7 +1683,7 @@ static const struct fb_ops riva_fb_ops = {
.fb_fillrect = rivafb_fillrect,
.fb_copyarea = rivafb_copyarea,
.fb_imageblit = rivafb_imageblit,
- .fb_cursor = rivafb_cursor,
+ .fb_cursor = rivafb_cursor,
.fb_sync = rivafb_sync,
};
@@ -1713,7 +1713,7 @@ static int riva_set_fbinfo(struct fb_info *info)
info->pseudo_palette = par->pseudo_palette;
cmap_len = riva_get_cmap_len(&info->var);
- fb_alloc_cmap(&info->cmap, cmap_len, 0);
+ fb_alloc_cmap(&info->cmap, cmap_len, 0);
info->pixmap.size = 8 * 1024;
info->pixmap.buf_align = 4;
@@ -1929,7 +1929,7 @@ static int rivafb_probe(struct pci_dev *pd, const struct pci_device_id *ent)
default_par->Chipset = (pd->vendor << 16) | pd->device;
printk(KERN_INFO PFX "nVidia device/chipset %X\n",default_par->Chipset);
-
+
if(default_par->riva.Architecture == 0) {
printk(KERN_ERR PFX "unknown NV_ARCH\n");
ret=-ENODEV;
@@ -1947,7 +1947,7 @@ static int rivafb_probe(struct pci_dev *pd, const struct pci_device_id *ent)
if (flatpanel == 1)
printk(KERN_INFO PFX "flatpanel support enabled\n");
default_par->forceCRTC = forceCRTC;
-
+
rivafb_fix.mmio_len = pci_resource_len(pd, 0);
rivafb_fix.smem_len = pci_resource_len(pd, 1);
@@ -1959,7 +1959,7 @@ static int rivafb_probe(struct pci_dev *pd, const struct pci_device_id *ent)
cmd |= (PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
pci_write_config_word(pd, PCI_COMMAND, cmd);
}
-
+
rivafb_fix.mmio_start = pci_resource_start(pd, 0);
rivafb_fix.smem_start = pci_resource_start(pd, 1);
@@ -2058,7 +2058,7 @@ static int rivafb_probe(struct pci_dev *pd, const struct pci_device_id *ent)
#endif
iounmap(info->screen_base);
err_iounmap_pramin:
- if (default_par->riva.Architecture == NV_ARCH_03)
+ if (default_par->riva.Architecture == NV_ARCH_03)
iounmap(default_par->riva.PRAMIN);
err_iounmap_ctrl_base:
iounmap(default_par->ctrl_base);
@@ -2077,7 +2077,7 @@ static void rivafb_remove(struct pci_dev *pd)
{
struct fb_info *info = pci_get_drvdata(pd);
struct riva_par *par = info->par;
-
+
NVTRACE_ENTER();
#ifdef CONFIG_FB_RIVA_I2C
@@ -2117,11 +2117,11 @@ static int rivafb_setup(char *options)
while ((this_opt = strsep(&options, ",")) != NULL) {
if (!strncmp(this_opt, "forceCRTC", 9)) {
char *p;
-
+
p = this_opt + 9;
- if (!*p || !*(++p)) continue;
+ if (!*p || !*(++p)) continue;
forceCRTC = *p - '0';
- if (forceCRTC < 0 || forceCRTC > 1)
+ if (forceCRTC < 0 || forceCRTC > 1)
forceCRTC = -1;
} else if (!strncmp(this_opt, "flatpanel", 9)) {
flatpanel = 1;
diff --git a/drivers/video/fbdev/skeletonfb.c b/drivers/video/fbdev/skeletonfb.c
index d119b1d08007..304320ce6c6f 100644
--- a/drivers/video/fbdev/skeletonfb.c
+++ b/drivers/video/fbdev/skeletonfb.c
@@ -10,32 +10,32 @@
* The primary goal is to remove the console code from fbdev and place it
* into fbcon.c. This reduces the code and makes writing a new fbdev driver
* easy since the author doesn't need to worry about console internals. It
- * also allows the ability to run fbdev without a console/tty system on top
- * of it.
+ * also allows the ability to run fbdev without a console/tty system on top
+ * of it.
*
* First the roles of struct fb_info and struct display have changed. Struct
* display will go away. The way the new framebuffer console code will
- * work is that it will act to translate data about the tty/console in
+ * work is that it will act to translate data about the tty/console in
* struct vc_data to data in a device independent way in struct fb_info. Then
- * various functions in struct fb_ops will be called to store the device
- * dependent state in the par field in struct fb_info and to change the
+ * various functions in struct fb_ops will be called to store the device
+ * dependent state in the par field in struct fb_info and to change the
* hardware to that state. This allows a very clean separation of the fbdev
* layer from the console layer. It also allows one to use fbdev on its own
- * which is a bounus for embedded devices. The reason this approach works is
+ * which is a bounus for embedded devices. The reason this approach works is
* for each framebuffer device when used as a tty/console device is allocated
- * a set of virtual terminals to it. Only one virtual terminal can be active
- * per framebuffer device. We already have all the data we need in struct
+ * a set of virtual terminals to it. Only one virtual terminal can be active
+ * per framebuffer device. We already have all the data we need in struct
* vc_data so why store a bunch of colormaps and other fbdev specific data
- * per virtual terminal.
+ * per virtual terminal.
*
* As you can see doing this makes the con parameter pretty much useless
- * for struct fb_ops functions, as it should be. Also having struct
- * fb_var_screeninfo and other data in fb_info pretty much eliminates the
+ * for struct fb_ops functions, as it should be. Also having struct
+ * fb_var_screeninfo and other data in fb_info pretty much eliminates the
* need for get_fix and get_var. Once all drivers use the fix, var, and cmap
* fbcon can be written around these fields. This will also eliminate the
* need to regenerate struct fb_var_screeninfo, struct fb_fix_screeninfo
* struct fb_cmap every time get_var, get_fix, get_cmap functions are called
- * as many drivers do now.
+ * as many drivers do now.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
@@ -66,68 +66,68 @@
static char *mode_option;
/*
- * If your driver supports multiple boards, you should make the
- * below data types arrays, or allocate them dynamically (using kmalloc()).
- */
+ * If your driver supports multiple boards, you should make the
+ * below data types arrays, or allocate them dynamically (using kmalloc()).
+ */
-/*
+/*
* This structure defines the hardware state of the graphics card. Normally
* you place this in a header file in linux/include/video. This file usually
* also includes register information. That allows other driver subsystems
- * and userland applications the ability to use the same header file to
- * avoid duplicate work and easy porting of software.
+ * and userland applications the ability to use the same header file to
+ * avoid duplicate work and easy porting of software.
*/
struct xxx_par;
/*
* Here we define the default structs fb_fix_screeninfo and fb_var_screeninfo
* if we don't use modedb. If we do use modedb see xxxfb_init how to use it
- * to get a fb_var_screeninfo. Otherwise define a default var as well.
+ * to get a fb_var_screeninfo. Otherwise define a default var as well.
*/
static const struct fb_fix_screeninfo xxxfb_fix = {
- .id = "FB's name",
+ .id = "FB's name",
.type = FB_TYPE_PACKED_PIXELS,
.visual = FB_VISUAL_PSEUDOCOLOR,
.xpanstep = 1,
.ypanstep = 1,
- .ywrapstep = 1,
+ .ywrapstep = 1,
.accel = FB_ACCEL_NONE,
};
/*
- * Modern graphical hardware not only supports pipelines but some
+ * Modern graphical hardware not only supports pipelines but some
* also support multiple monitors where each display can have
- * its own unique data. In this case each display could be
- * represented by a separate framebuffer device thus a separate
+ * its own unique data. In this case each display could be
+ * represented by a separate framebuffer device thus a separate
* struct fb_info. Now the struct xxx_par represents the graphics
- * hardware state thus only one exist per card. In this case the
- * struct xxx_par for each graphics card would be shared between
- * every struct fb_info that represents a framebuffer on that card.
- * This allows when one display changes it video resolution (info->var)
+ * hardware state thus only one exist per card. In this case the
+ * struct xxx_par for each graphics card would be shared between
+ * every struct fb_info that represents a framebuffer on that card.
+ * This allows when one display changes it video resolution (info->var)
* the other displays know instantly. Each display can always be
* aware of the entire hardware state that affects it because they share
* the same xxx_par struct. The other side of the coin is multiple
* graphics cards that pass data around until it is finally displayed
* on one monitor. Such examples are the voodoo 1 cards and high end
* NUMA graphics servers. For this case we have a bunch of pars, each
- * one that represents a graphics state, that belong to one struct
+ * one that represents a graphics state, that belong to one struct
* fb_info. Their you would want to have *par point to a array of device
- * states and have each struct fb_ops function deal with all those
+ * states and have each struct fb_ops function deal with all those
* states. I hope this covers every possible hardware design. If not
- * feel free to send your ideas at jsimmons@users.sf.net
+ * feel free to send your ideas at jsimmons@users.sf.net
*/
/*
- * If your driver supports multiple boards or it supports multiple
- * framebuffers, you should make these arrays, or allocate them
+ * If your driver supports multiple boards or it supports multiple
+ * framebuffers, you should make these arrays, or allocate them
* dynamically using framebuffer_alloc() and free them with
* framebuffer_release().
- */
+ */
static struct fb_info info;
- /*
+ /*
* Each one represents the state of the hardware. Most hardware have
- * just one hardware state. These here represent the default state(s).
+ * just one hardware state. These here represent the default state(s).
*/
static struct xxx_par __initdata current_par;
@@ -138,12 +138,12 @@ int xxxfb_init(void);
* first accessed.
* @info: frame buffer structure that represents a single frame buffer
* @user: tell us if the userland (value=1) or the console is accessing
- * the framebuffer.
+ * the framebuffer.
*
* This function is the first function called in the framebuffer api.
- * Usually you don't need to provide this function. The case where it
+ * Usually you don't need to provide this function. The case where it
* is used is to change from a text mode hardware state to a graphics
- * mode state.
+ * mode state.
*
* Returns negative errno on error, or zero on success.
*/
@@ -153,13 +153,13 @@ static int xxxfb_open(struct fb_info *info, int user)
}
/**
- * xxxfb_release - Optional function. Called when the framebuffer
- * device is closed.
+ * xxxfb_release - Optional function. Called when the framebuffer
+ * device is closed.
* @info: frame buffer structure that represents a single frame buffer
* @user: tell us if the userland (value=1) or the console is accessing
- * the framebuffer.
- *
- * Thus function is called when we close /dev/fb or the framebuffer
+ * the framebuffer.
+ *
+ * Thus function is called when we close /dev/fb or the framebuffer
* console system is released. Usually you don't need this function.
* The case where it is usually used is to go from a graphics state
* to a text mode state.
@@ -172,17 +172,17 @@ static int xxxfb_release(struct fb_info *info, int user)
}
/**
- * xxxfb_check_var - Optional function. Validates a var passed in.
+ * xxxfb_check_var - Optional function. Validates a var passed in.
* @var: frame buffer variable screen structure
- * @info: frame buffer structure that represents a single frame buffer
+ * @info: frame buffer structure that represents a single frame buffer
*
* Checks to see if the hardware supports the state requested by
- * var passed in. This function does not alter the hardware state!!!
- * This means the data stored in struct fb_info and struct xxx_par do
- * not change. This includes the var inside of struct fb_info.
+ * var passed in. This function does not alter the hardware state!!!
+ * This means the data stored in struct fb_info and struct xxx_par do
+ * not change. This includes the var inside of struct fb_info.
* Do NOT change these. This function can be called on its own if we
- * intent to only test a mode and not actually set it. The stuff in
- * modedb.c is a example of this. If the var passed in is slightly
+ * intent to only test a mode and not actually set it. The stuff in
+ * modedb.c is a example of this. If the var passed in is slightly
* off by what the hardware can support then we alter the var PASSED in
* to what we can do.
*
@@ -210,7 +210,7 @@ static int xxxfb_release(struct fb_info *info, int user)
static int xxxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
/* ... */
- return 0;
+ return 0;
}
/**
@@ -219,9 +219,9 @@ static int xxxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
*
* Using the fb_var_screeninfo in fb_info we set the resolution of the
* this particular framebuffer. This function alters the par AND the
- * fb_fix_screeninfo stored in fb_info. It doesn't not alter var in
+ * fb_fix_screeninfo stored in fb_info. It doesn't not alter var in
* fb_info since we are using that data. This means we depend on the
- * data in var inside fb_info to be supported by the hardware.
+ * data in var inside fb_info to be supported by the hardware.
*
* This function is also used to recover/restore the hardware to a
* known working state.
@@ -256,20 +256,20 @@ static int xxxfb_set_par(struct fb_info *info)
{
struct xxx_par *par = info->par;
/* ... */
- return 0;
+ return 0;
}
/**
* xxxfb_setcolreg - Optional function. Sets a color register.
- * @regno: Which register in the CLUT we are programming
- * @red: The red value which can be up to 16 bits wide
- * @green: The green value which can be up to 16 bits wide
+ * @regno: Which register in the CLUT we are programming
+ * @red: The red value which can be up to 16 bits wide
+ * @green: The green value which can be up to 16 bits wide
* @blue: The blue value which can be up to 16 bits wide.
* @transp: If supported, the alpha value which can be up to 16 bits wide.
* @info: frame buffer info structure
- *
+ *
* Set a single color register. The values supplied have a 16 bit
- * magnitude which needs to be scaled in this function for the hardware.
+ * magnitude which needs to be scaled in this function for the hardware.
* Things to take into consideration are how many color registers, if
* any, are supported with the current color visual. With truecolor mode
* no color palettes are supported. Here a pseudo palette is created
@@ -277,8 +277,8 @@ static int xxxfb_set_par(struct fb_info *info)
* pseudocolor mode we have a limited color palette. To deal with this
* we can program what color is displayed for a particular pixel value.
* DirectColor is similar in that we can program each color field. If
- * we have a static colormap we don't need to implement this function.
- *
+ * we have a static colormap we don't need to implement this function.
+ *
* Returns negative errno on error, or zero on success.
*/
static int xxxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
@@ -442,7 +442,7 @@ static int xxxfb_pan_display(struct fb_var_screeninfo *var,
/**
* xxxfb_blank - NOT a required function. Blanks the display.
- * @blank_mode: the blank mode we want.
+ * @blank_mode: the blank mode we want.
* @info: frame buffer structure that represents a single frame buffer
*
* Blank the screen if blank_mode != FB_BLANK_UNBLANK, else unblank.
@@ -471,22 +471,22 @@ static int xxxfb_blank(int blank_mode, struct fb_info *info)
/*
* We provide our own functions if we have hardware acceleration
- * or non packed pixel format layouts. If we have no hardware
+ * or non packed pixel format layouts. If we have no hardware
* acceleration, we can use a generic unaccelerated function. If using
- * a pack pixel format just use the functions in cfb_*.c. Each file
+ * a pack pixel format just use the functions in cfb_*.c. Each file
* has one of the three different accel functions we support.
*/
/**
- * xxxfb_fillrect - REQUIRED function. Can use generic routines if
+ * xxxfb_fillrect - REQUIRED function. Can use generic routines if
* non acclerated hardware and packed pixel based.
- * Draws a rectangle on the screen.
+ * Draws a rectangle on the screen.
*
* @info: frame buffer structure that represents a single frame buffer
- * @region: The structure representing the rectangular region we
+ * @region: The structure representing the rectangular region we
* wish to draw to.
*
- * This drawing operation places/removes a retangle on the screen
+ * This drawing operation places/removes a retangle on the screen
* depending on the rastering operation with the value of color which
* is in the current color depth format.
*/
@@ -494,13 +494,13 @@ void xxxfb_fillrect(struct fb_info *p, const struct fb_fillrect *region)
{
/* Meaning of struct fb_fillrect
*
- * @dx: The x and y corrdinates of the upper left hand corner of the
- * @dy: area we want to draw to.
+ * @dx: The x and y corrdinates of the upper left hand corner of the
+ * @dy: area we want to draw to.
* @width: How wide the rectangle is we want to draw.
* @height: How tall the rectangle is we want to draw.
- * @color: The color to fill in the rectangle with.
+ * @color: The color to fill in the rectangle with.
* @rop: The raster operation. We can draw the rectangle with a COPY
- * of XOR which provides erasing effect.
+ * of XOR which provides erasing effect.
*/
}
@@ -516,7 +516,7 @@ void xxxfb_fillrect(struct fb_info *p, const struct fb_fillrect *region)
* This drawing operation copies a rectangular area from one area of the
* screen to another area.
*/
-void xxxfb_copyarea(struct fb_info *p, const struct fb_copyarea *area)
+void xxxfb_copyarea(struct fb_info *p, const struct fb_copyarea *area)
{
/*
* @dx: The x and y coordinates of the upper left hand corner of the
@@ -532,28 +532,28 @@ void xxxfb_copyarea(struct fb_info *p, const struct fb_copyarea *area)
/**
* xxxfb_imageblit - REQUIRED function. Can use generic routines if
* non acclerated hardware and packed pixel based.
- * Copies a image from system memory to the screen.
+ * Copies a image from system memory to the screen.
*
* @info: frame buffer structure that represents a single frame buffer
* @image: structure defining the image.
*
- * This drawing operation draws a image on the screen. It can be a
+ * This drawing operation draws a image on the screen. It can be a
* mono image (needed for font handling) or a color image (needed for
- * tux).
+ * tux).
*/
-void xxxfb_imageblit(struct fb_info *p, const struct fb_image *image)
+void xxxfb_imageblit(struct fb_info *p, const struct fb_image *image)
{
/*
* @dx: The x and y coordinates of the upper left hand corner of the
* @dy: destination area to place the image on the screen.
* @width: How wide the image is we want to copy.
* @height: How tall the image is we want to copy.
- * @fg_color: For mono bitmap images this is color data for
+ * @fg_color: For mono bitmap images this is color data for
* @bg_color: the foreground and background of the image to
* write directly to the frmaebuffer.
* @depth: How many bits represent a single pixel for this image.
* @data: The actual data used to construct the image on the display.
- * @cmap: The colormap used for color images.
+ * @cmap: The colormap used for color images.
*/
/*
@@ -580,13 +580,13 @@ void xxxfb_imageblit(struct fb_info *p, const struct fb_image *image)
int xxxfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
{
/*
- * @set: Which fields we are altering in struct fb_cursor
- * @enable: Disable or enable the cursor
- * @rop: The bit operation we want to do.
- * @mask: This is the cursor mask bitmap.
+ * @set: Which fields we are altering in struct fb_cursor
+ * @enable: Disable or enable the cursor
+ * @rop: The bit operation we want to do.
+ * @mask: This is the cursor mask bitmap.
* @dest: A image of the area we are going to display the cursor.
- * Used internally by the driver.
- * @hot: The hot spot.
+ * Used internally by the driver.
+ * @hot: The hot spot.
* @image: The actual data for the cursor image.
*
* NOTES ON FLAGS (cursor->set):
@@ -614,11 +614,11 @@ int xxxfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
}
/**
- * xxxfb_sync - NOT a required function. Normally the accel engine
+ * xxxfb_sync - NOT a required function. Normally the accel engine
* for a graphics card take a specific amount of time.
* Often we have to wait for the accelerator to finish
* its operation before we can write to the framebuffer
- * so we can have consistent display output.
+ * so we can have consistent display output.
*
* @info: frame buffer structure that represents a single frame buffer
*
@@ -666,8 +666,8 @@ static int xxxfb_probe(struct pci_dev *dev, const struct pci_device_id *ent)
struct fb_info *info;
struct xxx_par *par;
struct device *device = &dev->dev; /* or &pdev->dev */
- int cmap_len, retval;
-
+ int cmap_len, retval;
+
/*
* Dynamically allocate info and par
*/
@@ -679,11 +679,11 @@ static int xxxfb_probe(struct pci_dev *dev, const struct pci_device_id *ent)
par = info->par;
- /*
+ /*
* Here we set the screen_base to the virtual memory address
* for the framebuffer. Usually we obtain the resource address
* from the bus layer and then translate it to virtual memory
- * space via ioremap. Consult ioport.h.
+ * space via ioremap. Consult ioport.h.
*/
info->screen_base = framebuffer_virtual_memory;
info->fbops = &xxxfb_ops;
@@ -767,24 +767,24 @@ static int xxxfb_probe(struct pci_dev *dev, const struct pci_device_id *ent)
/*
* This should give a reasonable default video mode. The following is
- * done when we can set a video mode.
+ * done when we can set a video mode.
*/
if (!mode_option)
- mode_option = "640x480@60";
+ mode_option = "640x480@60";
retval = fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 8);
-
+
if (!retval || retval == 4)
- return -EINVAL;
+ return -EINVAL;
/* This has to be done! */
if (fb_alloc_cmap(&info->cmap, cmap_len, 0))
return -ENOMEM;
-
- /*
- * The following is done in the case of having hardware with a static
- * mode. If we are setting the mode ourselves we don't call this.
- */
+
+ /*
+ * The following is done in the case of having hardware with a static
+ * mode. If we are setting the mode ourselves we don't call this.
+ */
info->var = xxxfb_var;
/*
diff --git a/drivers/video/fbdev/sstfb.c b/drivers/video/fbdev/sstfb.c
index 27d4b0ace2d6..535ef4693cd4 100644
--- a/drivers/video/fbdev/sstfb.c
+++ b/drivers/video/fbdev/sstfb.c
@@ -364,7 +364,7 @@ static int sstfb_check_var(struct fb_var_screeninfo *var,
return -EINVAL;
}
var->pixclock = KHZ2PICOS(freq);
-
+
if (var->vmode & FB_VMODE_INTERLACED)
vBackPorch += (vBackPorch % 2);
if (var->vmode & FB_VMODE_DOUBLE) {
@@ -382,7 +382,7 @@ static int sstfb_check_var(struct fb_var_screeninfo *var,
printk(KERN_ERR "sstfb: Unsupported bpp %d\n", var->bits_per_pixel);
return -EINVAL;
}
-
+
/* validity tests */
if (var->xres <= 1 || yDim <= 0 || var->hsync_len <= 1 ||
hSyncOff <= 1 || var->left_margin <= 2 || vSyncOn <= 0 ||
@@ -392,7 +392,7 @@ static int sstfb_check_var(struct fb_var_screeninfo *var,
if (IS_VOODOO2(par)) {
/* Voodoo 2 limits */
- tiles_in_X = (var->xres + 63 ) / 64 * 2;
+ tiles_in_X = (var->xres + 63 ) / 64 * 2;
if (var->xres > POW2(11) || yDim >= POW2(11)) {
printk(KERN_ERR "sstfb: Unsupported resolution %dx%d\n",
@@ -631,7 +631,7 @@ static int sstfb_set_par(struct fb_info *info)
lfbmode |= ( LFB_WORD_SWIZZLE_WR | LFB_BYTE_SWIZZLE_WR |
LFB_WORD_SWIZZLE_RD | LFB_BYTE_SWIZZLE_RD );
#endif
-
+
if (clipping) {
sst_write(LFBMODE, lfbmode | EN_PXL_PIPELINE);
/*
@@ -684,7 +684,7 @@ static int sstfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
| (green << info->var.green.offset)
| (blue << info->var.blue.offset)
| (transp << info->var.transp.offset);
-
+
par->palette[regno] = col;
return 0;
@@ -773,7 +773,7 @@ static void sstfb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
{
struct sstfb_par *par = info->par;
u32 stride = info->fix.line_length;
-
+
if (!IS_VOODOO2(par))
return;
@@ -795,17 +795,17 @@ static void sstfb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
* FillRect 2D command (solidfill or invert (via ROP_XOR)) - Voodoo2 only
*/
#if 0
-static void sstfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
+static void sstfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
struct sstfb_par *par = info->par;
u32 stride = info->fix.line_length;
if (!IS_VOODOO2(par))
return;
-
+
sst_write(BLTCLIPX, info->var.xres);
sst_write(BLTCLIPY, info->var.yres);
-
+
sst_write(BLTDSTBASEADDR, 0);
sst_write(BLTCOLOR, rect->color);
sst_write(BLTROP, rect->rop == ROP_COPY ? BLTROP_COPY : BLTROP_XOR);
@@ -820,8 +820,8 @@ static void sstfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
-/*
- * get lfb size
+/*
+ * get lfb size
*/
static int sst_get_memsize(struct fb_info *info, __u32 *memsize)
{
@@ -859,8 +859,8 @@ static int sst_get_memsize(struct fb_info *info, __u32 *memsize)
}
-/*
- * DAC detection routines
+/*
+ * DAC detection routines
*/
/* fbi should be idle, and fifo emty and mem disabled */
@@ -963,7 +963,7 @@ static int sst_detect_ics(struct fb_info *info)
* see detect_dac
*/
-static int sst_set_pll_att_ti(struct fb_info *info,
+static int sst_set_pll_att_ti(struct fb_info *info,
const struct pll_timing *t, const int clock)
{
struct sstfb_par *par = info->par;
@@ -1338,10 +1338,10 @@ static int sstfb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
return -ENOMEM;
pci_set_drvdata(pdev, info);
-
+
par = info->par;
fix = &info->fix;
-
+
par->type = id->driver_data;
spec = &voodoo_spec[par->type];
f_ddprintk("found device : %s\n", spec->name);
@@ -1407,7 +1407,7 @@ static int sstfb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
* fact dithered to 16bit).
*/
fix->line_length = 2048; /* default value, for 24 or 32bit: 4096 */
-
+
fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 16);
if (sstfb_check_var(&info->var, info)) {
@@ -1419,7 +1419,7 @@ static int sstfb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
printk(KERN_ERR "sstfb: can't set default video mode.\n");
goto fail;
}
-
+
if (fb_alloc_cmap(&info->cmap, 256, 0)) {
printk(KERN_ERR "sstfb: can't alloc cmap memory.\n");
goto fail;
@@ -1465,7 +1465,7 @@ static void sstfb_remove(struct pci_dev *pdev)
info = pci_get_drvdata(pdev);
par = info->par;
-
+
device_remove_file(info->dev, &device_attrs[0]);
sst_shutdown(info);
iounmap(info->screen_base);
diff --git a/drivers/video/fbdev/tgafb.c b/drivers/video/fbdev/tgafb.c
index ae0cf5540636..9266c76783cc 100644
--- a/drivers/video/fbdev/tgafb.c
+++ b/drivers/video/fbdev/tgafb.c
@@ -729,7 +729,7 @@ tgafb_mono_imageblit(struct fb_info *info, const struct fb_image *image)
/* Handle another common case in which accel_putcs
generates a large bitmap, which happens to be aligned.
- Allow the tail to be misaligned. This case is
+ Allow the tail to be misaligned. This case is
interesting because we've not got to hold partial
bytes across the words being written. */
@@ -908,9 +908,9 @@ tgafb_imageblit(struct fb_info *info, const struct fb_image *image)
}
/**
- * tgafb_fillrect - REQUIRED function. Can use generic routines if
+ * tgafb_fillrect - REQUIRED function. Can use generic routines if
* non acclerated hardware and packed pixel based.
- * Draws a rectangle on the screen.
+ * Draws a rectangle on the screen.
*
* @info: frame buffer structure that represents a single frame buffer
* @rect: structure defining the rectagle and operation.
@@ -1044,7 +1044,7 @@ tgafb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
/* Handle the special case of copying entire lines, e.g. during scrolling.
We can avoid a lot of needless computation in this case. In the 8bpp
- case we need to use the COPY64 registers instead of mask writes into
+ case we need to use the COPY64 registers instead of mask writes into
the frame buffer to achieve maximum performance. */
static inline void
@@ -1251,7 +1251,7 @@ copyarea_8bpp(struct fb_info *info, u32 dx, u32 dy, u32 sx, u32 sy,
}
static void
-tgafb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
+tgafb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
{
unsigned long dx, dy, width, height, sx, sy, vxres, vyres;
unsigned long line_length, bpp;
diff --git a/drivers/video/fbdev/vga16fb.c b/drivers/video/fbdev/vga16fb.c
index d21f68f3ee44..faf76972114d 100644
--- a/drivers/video/fbdev/vga16fb.c
+++ b/drivers/video/fbdev/vga16fb.c
@@ -1,13 +1,13 @@
/*
* linux/drivers/video/vga16.c -- VGA 16-color framebuffer driver
- *
+ *
* Copyright 1999 Ben Pfaff <pfaffben@debian.org> and Petr Vandrovec <VANDROVE@vc.cvut.cz>
* Based on VGA info at http://www.goodnet.com/~tinara/FreeVGA/home.htm
* Based on VESA framebuffer (c) 1998 Gerd Knorr <kraxel@goldbach.in-berlin.de>
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file COPYING in the main directory of this
- * archive for more details.
+ * archive for more details.
*/
#include <linux/module.h>
@@ -70,7 +70,7 @@ static struct fb_var_screeninfo vga16fb_defined = {
.yres = 480,
.xres_virtual = 640,
.yres_virtual = 480,
- .bits_per_pixel = 4,
+ .bits_per_pixel = 4,
.activate = FB_ACTIVATE_TEST,
.height = -1,
.width = -1,
@@ -120,7 +120,7 @@ static inline void rmw(volatile char __iomem *p)
static inline int setmode(int mode)
{
int oldmode;
-
+
oldmode = vga_io_rgfx(VGA_GFX_MODE);
vga_io_w(VGA_GFX_D, mode);
return oldmode;
@@ -139,19 +139,19 @@ static inline void setmask(int mask)
vga_io_w(VGA_GFX_D, mask);
}
-/* Set the Data Rotate Register and return its old value.
+/* Set the Data Rotate Register and return its old value.
Bits 0-2 are rotate count, bits 3-4 are logical operation
(0=NOP, 1=AND, 2=OR, 3=XOR). */
static inline int setop(int op)
{
int oldop;
-
+
oldop = vga_io_rgfx(VGA_GFX_DATA_ROTATE);
vga_io_w(VGA_GFX_D, op);
return oldop;
}
-/* Set the Enable Set/Reset Register and return its old value.
+/* Set the Enable Set/Reset Register and return its old value.
The code here always uses value 0xf for this register. */
static inline int setsr(int sr)
{
@@ -203,7 +203,7 @@ static inline int check_mode_supported(void)
return 0;
}
-static void vga16fb_pan_var(struct fb_info *info,
+static void vga16fb_pan_var(struct fb_info *info,
struct fb_var_screeninfo *var)
{
struct vga16fb_par *par = info->par;
@@ -296,7 +296,7 @@ static void vga16fb_clock_chip(struct vga16fb_par *par,
par->clkdiv = best->seq_clock_mode;
*pixclock = (best->pixclock * div) / mul;
}
-
+
#define FAIL(X) return -EINVAL
static int vga16fb_open(struct fb_info *info, int user)
@@ -511,7 +511,7 @@ static int vga16fb_check_var(struct fb_var_screeninfo *var,
par->misc &= ~0x40;
if (var->sync & FB_SYNC_VERT_HIGH_ACT)
par->misc &= ~0x80;
-
+
par->mode = mode;
if (mode & MODE_8BPP)
@@ -520,8 +520,8 @@ static int vga16fb_check_var(struct fb_var_screeninfo *var,
else
/* pixel clock == vga clock */
vga16fb_clock_chip(par, &var->pixclock, info, 1, 1);
-
- var->red.offset = var->green.offset = var->blue.offset =
+
+ var->red.offset = var->green.offset = var->blue.offset =
var->transp.offset = 0;
var->red.length = var->green.length = var->blue.length =
(par->isVGA) ? 6 : 2;
@@ -588,10 +588,10 @@ static int vga16fb_set_par(struct fb_info *info)
else
atc[VGA_ATC_PEL] = info->var.xoffset & 7;
atc[VGA_ATC_COLOR_PAGE] = 0x00;
-
+
if (par->mode & MODE_TEXT) {
- fh = 16; // FIXME !!! Fudge font height.
- par->crtc[VGA_CRTC_MAX_SCAN] = (par->crtc[VGA_CRTC_MAX_SCAN]
+ fh = 16; // FIXME !!! Fudge font height.
+ par->crtc[VGA_CRTC_MAX_SCAN] = (par->crtc[VGA_CRTC_MAX_SCAN]
& ~0x1F) | (fh - 1);
}
@@ -602,10 +602,10 @@ static int vga16fb_set_par(struct fb_info *info)
vga_io_w(EGA_GFX_E0, 0x00);
vga_io_w(EGA_GFX_E1, 0x01);
}
-
+
/* update misc output register */
vga_io_w(VGA_MIS_W, par->misc);
-
+
/* synchronous reset on */
vga_io_wseq(0x00, 0x01);
@@ -617,7 +617,7 @@ static int vga16fb_set_par(struct fb_info *info)
for (i = 2; i < VGA_SEQ_C; i++) {
vga_io_wseq(i, seq[i]);
}
-
+
/* synchronous reset off */
vga_io_wseq(0x00, 0x03);
@@ -628,12 +628,12 @@ static int vga16fb_set_par(struct fb_info *info)
for (i = 0; i < VGA_CRTC_REGS; i++) {
vga_io_wcrt(i, par->crtc[i]);
}
-
+
/* write graphics controller registers */
for (i = 0; i < VGA_GFX_C; i++) {
vga_io_wgfx(i, gdc[i]);
}
-
+
/* write attribute controller registers */
for (i = 0; i < VGA_ATT_C; i++) {
vga_io_r(VGA_IS1_RC); /* reset flip-flop */
@@ -656,7 +656,7 @@ static void ega16_setpalette(int regno, unsigned red, unsigned green, unsigned b
{
static const unsigned char map[] = { 000, 001, 010, 011 };
int val;
-
+
if (regno >= 16)
return;
val = map[red>>14] | ((map[green>>14]) << 1) | ((map[blue>>14]) << 2);
@@ -687,17 +687,17 @@ static int vga16fb_setcolreg(unsigned regno, unsigned red, unsigned green,
* (according to the entries in the `var' structure). Return
* != 0 for invalid regno.
*/
-
+
if (regno >= 256)
return 1;
gray = info->var.grayscale;
-
+
if (gray) {
/* gray = 0.30*R + 0.59*G + 0.11*B */
red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
}
- if (par->isVGA)
+ if (par->isVGA)
vga16_setpalette(regno,red,green,blue);
else
ega16_setpalette(regno,red,green,blue);
@@ -705,7 +705,7 @@ static int vga16fb_setcolreg(unsigned regno, unsigned red, unsigned green,
}
static int vga16fb_pan_display(struct fb_var_screeninfo *var,
- struct fb_info *info)
+ struct fb_info *info)
{
vga16fb_pan_var(info, var);
return 0;
@@ -720,7 +720,7 @@ static void vga_vesa_blank(struct vga16fb_par *par, int mode)
{
unsigned char SeqCtrlIndex = vga_io_r(VGA_SEQ_I);
unsigned char CrtCtrlIndex = vga_io_r(VGA_CRT_IC);
-
+
/* save original values of VGA controller registers */
if(!par->vesa_blanked) {
par->vga_state.CrtMiscIO = vga_io_r(VGA_MIS_R);
@@ -776,7 +776,7 @@ static void vga_vesa_unblank(struct vga16fb_par *par)
{
unsigned char SeqCtrlIndex = vga_io_r(VGA_SEQ_I);
unsigned char CrtCtrlIndex = vga_io_r(VGA_CRT_IC);
-
+
/* restore original values of VGA controller registers */
vga_io_w(VGA_MIS_W, par->vga_state.CrtMiscIO);
@@ -962,7 +962,7 @@ static void vga16fb_fillrect(struct fb_info *info, const struct fb_fillrect *rec
}
break;
}
- } else
+ } else
vga_8planes_fillrect(info, rect);
break;
case FB_TYPE_PACKED_PIXELS:
@@ -1029,7 +1029,7 @@ static void vga_8planes_copyarea(struct fb_info *info, const struct fb_copyarea
static void vga16fb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
{
- u32 dx = area->dx, dy = area->dy, sx = area->sx, sy = area->sy;
+ u32 dx = area->dx, dy = area->dy, sx = area->sx, sy = area->sy;
int x, x2, y2, old_dx, old_dy, vxres, vyres;
int height, width, line_ofs;
char __iomem *dst = NULL;
@@ -1094,9 +1094,9 @@ static void vga16fb_copyarea(struct fb_info *info, const struct fb_copyarea *are
dst += line_ofs;
}
} else {
- dst = info->screen_base + (dx/8) + width +
+ dst = info->screen_base + (dx/8) + width +
(dy + height - 1) * info->fix.line_length;
- src = info->screen_base + (sx/8) + width +
+ src = info->screen_base + (sx/8) + width +
(sy + height - 1) * info->fix.line_length;
while (height--) {
for (x = 0; x < width; x++) {
@@ -1109,7 +1109,7 @@ static void vga16fb_copyarea(struct fb_info *info, const struct fb_copyarea *are
dst -= line_ofs;
}
}
- } else
+ } else
vga_8planes_copyarea(info, area);
break;
case FB_TYPE_PACKED_PIXELS:
@@ -1182,7 +1182,7 @@ static void vga_imageblit_expand(struct fb_info *info, const struct fb_image *im
setsr(0xf);
setcolor(image->fg_color);
selectmask();
-
+
setmask(0xff);
writeb(image->bg_color, where);
rmb();
@@ -1191,7 +1191,7 @@ static void vga_imageblit_expand(struct fb_info *info, const struct fb_image *im
wmb();
for (y = 0; y < image->height; y++) {
dst = where;
- for (x = image->width/8; x--;)
+ for (x = image->width/8; x--;)
writeb(*cdat++, dst++);
where += info->fix.line_length;
}
@@ -1202,7 +1202,7 @@ static void vga_imageblit_expand(struct fb_info *info, const struct fb_image *im
setsr(0xf);
setcolor(image->bg_color);
selectmask();
-
+
setmask(0xff);
for (y = 0; y < image->height; y++) {
dst = where;
@@ -1218,7 +1218,7 @@ static void vga_imageblit_expand(struct fb_info *info, const struct fb_image *im
where += info->fix.line_length;
}
}
- } else
+ } else
vga_8planes_imageblit(info, image);
break;
case FB_TYPE_PACKED_PIXELS:
@@ -1231,7 +1231,7 @@ static void vga_imageblit_expand(struct fb_info *info, const struct fb_image *im
static void vga_imageblit_color(struct fb_info *info, const struct fb_image *image)
{
/*
- * Draw logo
+ * Draw logo
*/
struct vga16fb_par *par = info->par;
char __iomem *where =
@@ -1248,7 +1248,7 @@ static void vga_imageblit_color(struct fb_info *info, const struct fb_image *ima
setsr(0xf);
setop(0);
setmode(0);
-
+
for (y = 0; y < image->height; y++) {
for (x = 0; x < image->width; x++) {
dst = where + x/8;
@@ -1272,7 +1272,7 @@ static void vga_imageblit_color(struct fb_info *info, const struct fb_image *ima
break;
}
}
-
+
static void vga16fb_imageblit(struct fb_info *info, const struct fb_image *image)
{
if (image->depth == 1)
@@ -1308,10 +1308,10 @@ static const struct fb_ops vga16fb_ops = {
static int __init vga16fb_setup(char *options)
{
char *this_opt;
-
+
if (!options || !*options)
return 0;
-
+
while ((this_opt = strsep(&options, ",")) != NULL) {
if (!*this_opt) continue;
}
@@ -1361,10 +1361,10 @@ static int vga16fb_probe(struct platform_device *dev)
par->vesa_blanked = 0;
i = par->isVGA? 6 : 2;
-
+
vga16fb_defined.red.length = i;
vga16fb_defined.green.length = i;
- vga16fb_defined.blue.length = i;
+ vga16fb_defined.blue.length = i;
/* name should not depend on EGA/VGA */
info->fbops = &vga16fb_ops;
diff --git a/include/video/vga.h b/include/video/vga.h
index d334e64c1c19..ef8e9fa9b9bd 100644
--- a/include/video/vga.h
+++ b/include/video/vga.h
@@ -2,15 +2,15 @@
* linux/include/video/vga.h -- standard VGA chipset interaction
*
* Copyright 1999 Jeff Garzik <jgarzik@pobox.com>
- *
+ *
* Copyright history from vga16fb.c:
* Copyright 1999 Ben Pfaff and Petr Vandrovec
- * Based on VGA info at http://www.osdever.net/FreeVGA/home.htm
+ * Based on VGA info at http://www.osdever.net/FreeVGA/home.htm
* Based on VESA framebuffer (c) 1998 Gerd Knorr
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file COPYING in the main directory of this
- * archive for more details.
+ * archive for more details.
*
*/
@@ -190,7 +190,7 @@ struct vgastate {
__u32 num_gfx; /* number of gfx registers, 0 for default */
__u32 num_seq; /* number of seq registers, 0 for default */
void *vidstate;
-};
+};
extern int save_vga(struct vgastate *state);
extern int restore_vga(struct vgastate *state);
@@ -198,7 +198,7 @@ extern int restore_vga(struct vgastate *state);
/*
* generic VGA port read/write
*/
-
+
static inline unsigned char vga_io_r (unsigned short port)
{
return inb_p(port);
@@ -261,7 +261,7 @@ static inline void vga_w_fast (void __iomem *regbase, unsigned short port,
/*
* VGA CRTC register read/write
*/
-
+
static inline unsigned char vga_rcrt (void __iomem *regbase, unsigned char reg)
{
vga_w (regbase, VGA_CRT_IC, reg);
@@ -314,7 +314,7 @@ static inline void vga_mm_wcrt (void __iomem *regbase, unsigned char reg, unsign
/*
* VGA sequencer register read/write
*/
-
+
static inline unsigned char vga_rseq (void __iomem *regbase, unsigned char reg)
{
vga_w (regbase, VGA_SEQ_I, reg);
@@ -366,7 +366,7 @@ static inline void vga_mm_wseq (void __iomem *regbase, unsigned char reg, unsign
/*
* VGA graphics controller register read/write
*/
-
+
static inline unsigned char vga_rgfx (void __iomem *regbase, unsigned char reg)
{
vga_w (regbase, VGA_GFX_I, reg);
@@ -419,7 +419,7 @@ static inline void vga_mm_wgfx (void __iomem *regbase, unsigned char reg, unsign
/*
* VGA attribute controller register read/write
*/
-
+
static inline unsigned char vga_rattr (void __iomem *regbase, unsigned char reg)
{
vga_w (regbase, VGA_ATT_IW, reg);
--
2.36.1
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH v2 02/11] fbdev/vga16fb: Create EGA/VGA devices in sysfb code
2022-07-18 7:23 [PATCH v2 00/11] fbdev: Maintain device ownership with aperture helpers Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 01/11] fbdev: Remove trailing whitespaces Thomas Zimmermann
@ 2022-07-18 7:23 ` Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 03/11] fbdev/vga16fb: Auto-generate module init/exit code Thomas Zimmermann
` (8 subsequent siblings)
10 siblings, 0 replies; 21+ messages in thread
From: Thomas Zimmermann @ 2022-07-18 7:23 UTC (permalink / raw)
To: javierm, deller, daniel, sam, maxime
Cc: linux-fbdev, linux-staging, Thomas Zimmermann, dri-devel
Move the device-creation from vga16fb to sysfb code. The driver's
videomode checks are independent from device creation, so move them
into vga16fb's probe function. This will allow to create the module
init/exit code automatically.
The vga16fb driver requires a screen_info for type VIDEO_TYPE_VGAC
or VIDEO_TYPE_EGAC. Such code is nowhere present in the kernel, except
for some MIPS systems. It's not clear if the vga16fb driver actually
works in practice.
v2:
* keep driver name to "vga16fb" (Javier)
* give rational for moving mode checks (Javier)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
drivers/firmware/sysfb.c | 4 +++
drivers/video/fbdev/vga16fb.c | 57 +++++++++++++++++------------------
2 files changed, 31 insertions(+), 30 deletions(-)
diff --git a/drivers/firmware/sysfb.c b/drivers/firmware/sysfb.c
index 1f276f108cc9..3fd3563d962b 100644
--- a/drivers/firmware/sysfb.c
+++ b/drivers/firmware/sysfb.c
@@ -94,6 +94,10 @@ static __init int sysfb_init(void)
name = "efi-framebuffer";
else if (si->orig_video_isVGA == VIDEO_TYPE_VLFB)
name = "vesa-framebuffer";
+ else if (si->orig_video_isVGA == VIDEO_TYPE_VGAC)
+ name = "vga-framebuffer";
+ else if (si->orig_video_isVGA == VIDEO_TYPE_EGAC)
+ name = "ega-framebuffer";
else
name = "platform-framebuffer";
diff --git a/drivers/video/fbdev/vga16fb.c b/drivers/video/fbdev/vga16fb.c
index faf76972114d..9e614c1db03d 100644
--- a/drivers/video/fbdev/vga16fb.c
+++ b/drivers/video/fbdev/vga16fb.c
@@ -185,19 +185,19 @@ static inline void setindex(int index)
}
/* Check if the video mode is supported by the driver */
-static inline int check_mode_supported(void)
+static inline int check_mode_supported(const struct screen_info *si)
{
/* non-x86 architectures treat orig_video_isVGA as a boolean flag */
#if defined(CONFIG_X86)
/* only EGA and VGA in 16 color graphic mode are supported */
- if (screen_info.orig_video_isVGA != VIDEO_TYPE_EGAC &&
- screen_info.orig_video_isVGA != VIDEO_TYPE_VGAC)
+ if (si->orig_video_isVGA != VIDEO_TYPE_EGAC &&
+ si->orig_video_isVGA != VIDEO_TYPE_VGAC)
return -ENODEV;
- if (screen_info.orig_video_mode != 0x0D && /* 320x200/4 (EGA) */
- screen_info.orig_video_mode != 0x0E && /* 640x200/4 (EGA) */
- screen_info.orig_video_mode != 0x10 && /* 640x350/4 (EGA) */
- screen_info.orig_video_mode != 0x12) /* 640x480/4 (VGA) */
+ if (si->orig_video_mode != 0x0D && /* 320x200/4 (EGA) */
+ si->orig_video_mode != 0x0E && /* 640x200/4 (EGA) */
+ si->orig_video_mode != 0x10 && /* 640x350/4 (EGA) */
+ si->orig_video_mode != 0x12) /* 640x480/4 (VGA) */
return -ENODEV;
#endif
return 0;
@@ -1321,11 +1321,20 @@ static int __init vga16fb_setup(char *options)
static int vga16fb_probe(struct platform_device *dev)
{
+ struct screen_info *si;
struct fb_info *info;
struct vga16fb_par *par;
int i;
int ret = 0;
+ si = dev_get_platdata(&dev->dev);
+ if (!si)
+ return -ENODEV;
+
+ ret = check_mode_supported(si);
+ if (ret)
+ return ret;
+
printk(KERN_DEBUG "vga16fb: initializing\n");
info = framebuffer_alloc(sizeof(struct vga16fb_par), &dev->dev);
@@ -1352,10 +1361,10 @@ static int vga16fb_probe(struct platform_device *dev)
par = info->par;
#if defined(CONFIG_X86)
- par->isVGA = screen_info.orig_video_isVGA == VIDEO_TYPE_VGAC;
+ par->isVGA = si->orig_video_isVGA == VIDEO_TYPE_VGAC;
#else
/* non-x86 architectures treat orig_video_isVGA as a boolean flag */
- par->isVGA = screen_info.orig_video_isVGA;
+ par->isVGA = si->orig_video_isVGA;
#endif
par->palette_blanked = 0;
par->vesa_blanked = 0;
@@ -1425,16 +1434,21 @@ static int vga16fb_remove(struct platform_device *dev)
return 0;
}
+static const struct platform_device_id vga16fb_driver_id_table[] = {
+ {"ega-framebuffer", 0},
+ {"vga-framebuffer", 0},
+ { }
+};
+
static struct platform_driver vga16fb_driver = {
.probe = vga16fb_probe,
.remove = vga16fb_remove,
.driver = {
.name = "vga16fb",
},
+ .id_table = vga16fb_driver_id_table,
};
-static struct platform_device *vga16fb_device;
-
static int __init vga16fb_init(void)
{
int ret;
@@ -1447,32 +1461,15 @@ static int __init vga16fb_init(void)
vga16fb_setup(option);
#endif
- ret = check_mode_supported();
+ ret = platform_driver_register(&vga16fb_driver);
if (ret)
return ret;
- ret = platform_driver_register(&vga16fb_driver);
-
- if (!ret) {
- vga16fb_device = platform_device_alloc("vga16fb", 0);
-
- if (vga16fb_device)
- ret = platform_device_add(vga16fb_device);
- else
- ret = -ENOMEM;
-
- if (ret) {
- platform_device_put(vga16fb_device);
- platform_driver_unregister(&vga16fb_driver);
- }
- }
-
- return ret;
+ return 0;
}
static void __exit vga16fb_exit(void)
{
- platform_device_unregister(vga16fb_device);
platform_driver_unregister(&vga16fb_driver);
}
--
2.36.1
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH v2 03/11] fbdev/vga16fb: Auto-generate module init/exit code
2022-07-18 7:23 [PATCH v2 00/11] fbdev: Maintain device ownership with aperture helpers Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 01/11] fbdev: Remove trailing whitespaces Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 02/11] fbdev/vga16fb: Create EGA/VGA devices in sysfb code Thomas Zimmermann
@ 2022-07-18 7:23 ` Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 04/11] fbdev/core: Remove remove_conflicting_pci_framebuffers() Thomas Zimmermann
` (7 subsequent siblings)
10 siblings, 0 replies; 21+ messages in thread
From: Thomas Zimmermann @ 2022-07-18 7:23 UTC (permalink / raw)
To: javierm, deller, daniel, sam, maxime
Cc: linux-fbdev, linux-staging, Thomas Zimmermann, dri-devel
Move vgag16fb's option parsing into the driver's probe function and
generate the rest of the module's init/exit functions from macros.
Keep the options code, although there are no options defined.
v2:
* no options are supported, remove the code (Javier)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
drivers/video/fbdev/vga16fb.c | 41 +----------------------------------
1 file changed, 1 insertion(+), 40 deletions(-)
diff --git a/drivers/video/fbdev/vga16fb.c b/drivers/video/fbdev/vga16fb.c
index 9e614c1db03d..3312b6a4e00d 100644
--- a/drivers/video/fbdev/vga16fb.c
+++ b/drivers/video/fbdev/vga16fb.c
@@ -1304,21 +1304,6 @@ static const struct fb_ops vga16fb_ops = {
.fb_imageblit = vga16fb_imageblit,
};
-#ifndef MODULE
-static int __init vga16fb_setup(char *options)
-{
- char *this_opt;
-
- if (!options || !*options)
- return 0;
-
- while ((this_opt = strsep(&options, ",")) != NULL) {
- if (!*this_opt) continue;
- }
- return 0;
-}
-#endif
-
static int vga16fb_probe(struct platform_device *dev)
{
struct screen_info *si;
@@ -1449,31 +1434,7 @@ static struct platform_driver vga16fb_driver = {
.id_table = vga16fb_driver_id_table,
};
-static int __init vga16fb_init(void)
-{
- int ret;
-#ifndef MODULE
- char *option = NULL;
-
- if (fb_get_options("vga16fb", &option))
- return -ENODEV;
-
- vga16fb_setup(option);
-#endif
-
- ret = platform_driver_register(&vga16fb_driver);
- if (ret)
- return ret;
-
- return 0;
-}
-
-static void __exit vga16fb_exit(void)
-{
- platform_driver_unregister(&vga16fb_driver);
-}
+module_platform_driver(vga16fb_driver);
MODULE_DESCRIPTION("Legacy VGA framebuffer device driver");
MODULE_LICENSE("GPL");
-module_init(vga16fb_init);
-module_exit(vga16fb_exit);
--
2.36.1
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH v2 04/11] fbdev/core: Remove remove_conflicting_pci_framebuffers()
2022-07-18 7:23 [PATCH v2 00/11] fbdev: Maintain device ownership with aperture helpers Thomas Zimmermann
` (2 preceding siblings ...)
2022-07-18 7:23 ` [PATCH v2 03/11] fbdev/vga16fb: Auto-generate module init/exit code Thomas Zimmermann
@ 2022-07-18 7:23 ` Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 05/11] fbdev: Convert drivers to aperture helpers Thomas Zimmermann
` (6 subsequent siblings)
10 siblings, 0 replies; 21+ messages in thread
From: Thomas Zimmermann @ 2022-07-18 7:23 UTC (permalink / raw)
To: javierm, deller, daniel, sam, maxime
Cc: linux-fbdev, linux-staging, Thomas Zimmermann, dri-devel
Remove remove_conflicting_pci_framebuffers() and implement similar
functionality in aperture_remove_conflicting_pci_device(), which was
the only caller. Removes an otherwise unused interface and streamlines
the aperture helper. No functional changes.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
drivers/video/aperture.c | 30 ++++++++++++--------
drivers/video/fbdev/core/fbmem.c | 48 --------------------------------
include/linux/fb.h | 2 --
3 files changed, 18 insertions(+), 62 deletions(-)
diff --git a/drivers/video/aperture.c b/drivers/video/aperture.c
index 538f2d40acda..f42a0d8bc211 100644
--- a/drivers/video/aperture.c
+++ b/drivers/video/aperture.c
@@ -321,30 +321,36 @@ EXPORT_SYMBOL(aperture_remove_conflicting_devices);
*/
int aperture_remove_conflicting_pci_devices(struct pci_dev *pdev, const char *name)
{
+ bool primary = false;
resource_size_t base, size;
int bar, ret;
- /*
- * WARNING: Apparently we must kick fbdev drivers before vgacon,
- * otherwise the vga fbdev driver falls over.
- */
-#if IS_REACHABLE(CONFIG_FB)
- ret = remove_conflicting_pci_framebuffers(pdev, name);
- if (ret)
- return ret;
+#ifdef CONFIG_X86
+ primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
#endif
- ret = vga_remove_vgacon(pdev);
- if (ret)
- return ret;
for (bar = 0; bar < PCI_STD_NUM_BARS; ++bar) {
if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM))
continue;
+
base = pci_resource_start(pdev, bar);
size = pci_resource_len(pdev, bar);
- aperture_detach_devices(base, size);
+ ret = aperture_remove_conflicting_devices(base, size, primary, name);
+ if (ret)
+ break;
}
+ if (ret)
+ return ret;
+
+ /*
+ * WARNING: Apparently we must kick fbdev drivers before vgacon,
+ * otherwise the vga fbdev driver falls over.
+ */
+ ret = vga_remove_vgacon(pdev);
+ if (ret)
+ return ret;
+
return 0;
}
diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
index c4a18322dee9..877de85309f3 100644
--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -1787,54 +1787,6 @@ int remove_conflicting_framebuffers(struct apertures_struct *a,
}
EXPORT_SYMBOL(remove_conflicting_framebuffers);
-/**
- * remove_conflicting_pci_framebuffers - remove firmware-configured framebuffers for PCI devices
- * @pdev: PCI device
- * @name: requesting driver name
- *
- * This function removes framebuffer devices (eg. initialized by firmware)
- * using memory range configured for any of @pdev's memory bars.
- *
- * The function assumes that PCI device with shadowed ROM drives a primary
- * display and so kicks out vga16fb.
- */
-int remove_conflicting_pci_framebuffers(struct pci_dev *pdev, const char *name)
-{
- struct apertures_struct *ap;
- bool primary = false;
- int err, idx, bar;
-
- for (idx = 0, bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
- if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM))
- continue;
- idx++;
- }
-
- ap = alloc_apertures(idx);
- if (!ap)
- return -ENOMEM;
-
- for (idx = 0, bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
- if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM))
- continue;
- ap->ranges[idx].base = pci_resource_start(pdev, bar);
- ap->ranges[idx].size = pci_resource_len(pdev, bar);
- pci_dbg(pdev, "%s: bar %d: 0x%lx -> 0x%lx\n", __func__, bar,
- (unsigned long)pci_resource_start(pdev, bar),
- (unsigned long)pci_resource_end(pdev, bar));
- idx++;
- }
-
-#ifdef CONFIG_X86
- primary = pdev->resource[PCI_ROM_RESOURCE].flags &
- IORESOURCE_ROM_SHADOW;
-#endif
- err = remove_conflicting_framebuffers(ap, name, primary);
- kfree(ap);
- return err;
-}
-EXPORT_SYMBOL(remove_conflicting_pci_framebuffers);
-
/**
* register_framebuffer - registers a frame buffer device
* @fb_info: frame buffer info structure
diff --git a/include/linux/fb.h b/include/linux/fb.h
index 07fcd0e56682..b91c77016560 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -615,8 +615,6 @@ extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
/* drivers/video/fbmem.c */
extern int register_framebuffer(struct fb_info *fb_info);
extern void unregister_framebuffer(struct fb_info *fb_info);
-extern int remove_conflicting_pci_framebuffers(struct pci_dev *pdev,
- const char *name);
extern int remove_conflicting_framebuffers(struct apertures_struct *a,
const char *name, bool primary);
extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
--
2.36.1
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH v2 05/11] fbdev: Convert drivers to aperture helpers
2022-07-18 7:23 [PATCH v2 00/11] fbdev: Maintain device ownership with aperture helpers Thomas Zimmermann
` (3 preceding siblings ...)
2022-07-18 7:23 ` [PATCH v2 04/11] fbdev/core: Remove remove_conflicting_pci_framebuffers() Thomas Zimmermann
@ 2022-07-18 7:23 ` Thomas Zimmermann
2022-07-18 9:57 ` kernel test robot
2022-07-18 7:23 ` [PATCH v2 06/11] fbdev: Remove conflicting devices on PCI bus Thomas Zimmermann
` (5 subsequent siblings)
10 siblings, 1 reply; 21+ messages in thread
From: Thomas Zimmermann @ 2022-07-18 7:23 UTC (permalink / raw)
To: javierm, deller, daniel, sam, maxime
Cc: linux-fbdev, linux-staging, Thomas Zimmermann, dri-devel
Convert fbdev drivers from fbdev's remove_conflicting_framebuffers() to
the framework-independent aperture_remove_conflicting_devices(). Calling
this function will also remove conflicting DRM drivers.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
drivers/staging/sm750fb/sm750.c | 15 +++++----------
drivers/video/fbdev/aty/radeon_base.c | 17 ++++-------------
drivers/video/fbdev/hyperv_fb.c | 6 ++++--
3 files changed, 13 insertions(+), 25 deletions(-)
diff --git a/drivers/staging/sm750fb/sm750.c b/drivers/staging/sm750fb/sm750.c
index dbd1159a2ef0..ce04c38f6afd 100644
--- a/drivers/staging/sm750fb/sm750.c
+++ b/drivers/staging/sm750fb/sm750.c
@@ -1,4 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
+#include <linux/aperture.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/errno.h>
@@ -987,22 +988,16 @@ static int sm750fb_framebuffer_alloc(struct sm750_dev *sm750_dev, int fbidx)
static int lynxfb_kick_out_firmware_fb(struct pci_dev *pdev)
{
- struct apertures_struct *ap;
+ resource_size_t base = pci_resource_start(pdev, 0);
+ resource_size_t size = pci_resource_len(pdev, 0);
bool primary = false;
- ap = alloc_apertures(1);
- if (!ap)
- return -ENOMEM;
-
- ap->ranges[0].base = pci_resource_start(pdev, 0);
- ap->ranges[0].size = pci_resource_len(pdev, 0);
#ifdef CONFIG_X86
primary = pdev->resource[PCI_ROM_RESOURCE].flags &
IORESOURCE_ROM_SHADOW;
#endif
- remove_conflicting_framebuffers(ap, "sm750_fb1", primary);
- kfree(ap);
- return 0;
+
+ return aperture_remove_conflicting_devices(base, size, primary, "sm750_fb1");
}
static int lynxfb_pci_probe(struct pci_dev *pdev,
diff --git a/drivers/video/fbdev/aty/radeon_base.c b/drivers/video/fbdev/aty/radeon_base.c
index b311c07fe66d..e5e362b8c9da 100644
--- a/drivers/video/fbdev/aty/radeon_base.c
+++ b/drivers/video/fbdev/aty/radeon_base.c
@@ -54,6 +54,7 @@
#include "radeonfb.h"
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
@@ -2239,20 +2240,10 @@ static const struct bin_attribute edid2_attr = {
static int radeon_kick_out_firmware_fb(struct pci_dev *pdev)
{
- struct apertures_struct *ap;
+ resource_size_t base = pci_resource_start(pdev, 0);
+ resource_size_t size = pci_resource_len(pdev, 0);
- ap = alloc_apertures(1);
- if (!ap)
- return -ENOMEM;
-
- ap->ranges[0].base = pci_resource_start(pdev, 0);
- ap->ranges[0].size = pci_resource_len(pdev, 0);
-
- remove_conflicting_framebuffers(ap, KBUILD_MODNAME, false);
-
- kfree(ap);
-
- return 0;
+ return aperture_remove_conflicting_devices(base, size, KBUILD_MODNAME, false);
}
static int radeonfb_pci_register(struct pci_dev *pdev,
diff --git a/drivers/video/fbdev/hyperv_fb.c b/drivers/video/fbdev/hyperv_fb.c
index 886c564787f1..a944a6620527 100644
--- a/drivers/video/fbdev/hyperv_fb.c
+++ b/drivers/video/fbdev/hyperv_fb.c
@@ -45,6 +45,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/vmalloc.h>
@@ -1074,8 +1075,9 @@ static int hvfb_getmem(struct hv_device *hdev, struct fb_info *info)
info->screen_size = dio_fb_size;
getmem_done:
- remove_conflicting_framebuffers(info->apertures,
- KBUILD_MODNAME, false);
+ aperture_remove_conflicting_devices(info->apertures->ranges[0].base,
+ info->apertures->ranges[0].size,
+ KBUILD_MODNAME, false);
if (gen2vm) {
/* framebuffer is reallocated, clear screen_info to avoid misuse from kexec */
--
2.36.1
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH v2 06/11] fbdev: Remove conflicting devices on PCI bus
2022-07-18 7:23 [PATCH v2 00/11] fbdev: Maintain device ownership with aperture helpers Thomas Zimmermann
` (4 preceding siblings ...)
2022-07-18 7:23 ` [PATCH v2 05/11] fbdev: Convert drivers to aperture helpers Thomas Zimmermann
@ 2022-07-18 7:23 ` Thomas Zimmermann
2022-07-21 14:17 ` Geert Uytterhoeven
2022-07-18 7:23 ` [PATCH v2 07/11] video/aperture: Disable and unregister sysfb devices via aperture helpers Thomas Zimmermann
` (4 subsequent siblings)
10 siblings, 1 reply; 21+ messages in thread
From: Thomas Zimmermann @ 2022-07-18 7:23 UTC (permalink / raw)
To: javierm, deller, daniel, sam, maxime
Cc: linux-fbdev, linux-staging, Thomas Zimmermann, dri-devel
Remove firmware devices on the PCI bus, by calling
aperture_remove_conflicting_pci_devices() in the probe function of
each related fbdev driver. iSo far, most of these drivers did not
remove conflicting VESA or EFI devices, or outride failed for
resource conflicts (i.e., matroxfb.) This must have been broken
for quite some time.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
drivers/video/fbdev/arkfb.c | 5 +++++
drivers/video/fbdev/asiliantfb.c | 5 +++++
drivers/video/fbdev/aty/aty128fb.c | 5 +++++
drivers/video/fbdev/aty/atyfb_base.c | 7 ++++++-
drivers/video/fbdev/carminefb.c | 5 +++++
drivers/video/fbdev/chipsfb.c | 7 ++++++-
drivers/video/fbdev/cirrusfb.c | 5 +++++
drivers/video/fbdev/cyber2000fb.c | 5 +++++
drivers/video/fbdev/geode/gx1fb_core.c | 5 +++++
drivers/video/fbdev/geode/gxfb_core.c | 5 +++++
drivers/video/fbdev/geode/lxfb_core.c | 5 +++++
drivers/video/fbdev/gxt4500.c | 5 +++++
drivers/video/fbdev/i740fb.c | 5 +++++
drivers/video/fbdev/i810/i810_main.c | 5 +++++
drivers/video/fbdev/imsttfb.c | 8 +++++++-
drivers/video/fbdev/intelfb/intelfbdrv.c | 5 +++++
drivers/video/fbdev/kyro/fbdev.c | 5 +++++
drivers/video/fbdev/matrox/matroxfb_base.c | 5 +++++
drivers/video/fbdev/mb862xx/mb862xxfbdrv.c | 5 +++++
drivers/video/fbdev/neofb.c | 5 +++++
drivers/video/fbdev/nvidia/nvidia.c | 7 ++++++-
drivers/video/fbdev/pm2fb.c | 5 +++++
drivers/video/fbdev/pm3fb.c | 5 +++++
drivers/video/fbdev/pvr2fb.c | 5 +++++
drivers/video/fbdev/riva/fbdev.c | 5 +++++
drivers/video/fbdev/s3fb.c | 5 +++++
drivers/video/fbdev/savage/savagefb_driver.c | 5 +++++
drivers/video/fbdev/sis/sis_main.c | 5 +++++
drivers/video/fbdev/skeletonfb.c | 8 ++++++++
drivers/video/fbdev/sm712fb.c | 5 +++++
drivers/video/fbdev/sstfb.c | 5 +++++
drivers/video/fbdev/sunxvr2500.c | 5 +++++
drivers/video/fbdev/sunxvr500.c | 5 +++++
drivers/video/fbdev/tdfxfb.c | 5 +++++
drivers/video/fbdev/tgafb.c | 7 +++++++
drivers/video/fbdev/tridentfb.c | 5 +++++
drivers/video/fbdev/vermilion/vermilion.c | 7 ++++++-
drivers/video/fbdev/via/via-core.c | 5 +++++
drivers/video/fbdev/vt8623fb.c | 5 +++++
39 files changed, 206 insertions(+), 5 deletions(-)
diff --git a/drivers/video/fbdev/arkfb.c b/drivers/video/fbdev/arkfb.c
index eb3e47c58c5f..453daa072f53 100644
--- a/drivers/video/fbdev/arkfb.c
+++ b/drivers/video/fbdev/arkfb.c
@@ -11,6 +11,7 @@
* Code is based on s3fb
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -949,6 +950,10 @@ static int ark_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
int rc;
u8 regval;
+ rc = aperture_remove_conflicting_pci_devices(dev, "arkfb");
+ if (rc < 0)
+ return rc;
+
/* Ignore secondary VGA device because there is no VGA arbitration */
if (! svga_primary_device(dev)) {
dev_info(&(dev->dev), "ignoring secondary device\n");
diff --git a/drivers/video/fbdev/asiliantfb.c b/drivers/video/fbdev/asiliantfb.c
index f8ef62542f7f..3818437a8f69 100644
--- a/drivers/video/fbdev/asiliantfb.c
+++ b/drivers/video/fbdev/asiliantfb.c
@@ -29,6 +29,7 @@
* more details.
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -545,6 +546,10 @@ static int asiliantfb_pci_init(struct pci_dev *dp,
struct fb_info *p;
int err;
+ err = aperture_remove_conflicting_pci_devices(dp, "asiliantfb");
+ if (err)
+ return err;
+
if ((dp->resource[0].flags & IORESOURCE_MEM) == 0)
return -ENODEV;
addr = pci_resource_start(dp, 0);
diff --git a/drivers/video/fbdev/aty/aty128fb.c b/drivers/video/fbdev/aty/aty128fb.c
index 5cdbbba2a013..57e398fe7a81 100644
--- a/drivers/video/fbdev/aty/aty128fb.c
+++ b/drivers/video/fbdev/aty/aty128fb.c
@@ -47,6 +47,7 @@
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
@@ -2055,6 +2056,10 @@ static int aty128_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
void __iomem *bios = NULL;
#endif
+ err = aperture_remove_conflicting_pci_devices(pdev, "aty128fb");
+ if (err)
+ return err;
+
/* Enable device in PCI config */
if ((err = pci_enable_device(pdev))) {
printk(KERN_ERR "aty128fb: Cannot enable PCI device: %d\n",
diff --git a/drivers/video/fbdev/aty/atyfb_base.c b/drivers/video/fbdev/aty/atyfb_base.c
index a3e6faed7745..4804b6e9f3f4 100644
--- a/drivers/video/fbdev/aty/atyfb_base.c
+++ b/drivers/video/fbdev/aty/atyfb_base.c
@@ -48,6 +48,7 @@
******************************************************************************/
+#include <linux/aperture.h>
#include <linux/compat.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
@@ -3533,7 +3534,11 @@ static int atyfb_pci_probe(struct pci_dev *pdev,
struct fb_info *info;
struct resource *rp;
struct atyfb_par *par;
- int rc = -ENOMEM;
+ int rc;
+
+ rc = aperture_remove_conflicting_pci_devices(pdev, "atyfb");
+ if (rc)
+ return rc;
/* Enable device in PCI config */
if (pci_enable_device(pdev)) {
diff --git a/drivers/video/fbdev/carminefb.c b/drivers/video/fbdev/carminefb.c
index 3a1c2e0739a1..4651b48a87f9 100644
--- a/drivers/video/fbdev/carminefb.c
+++ b/drivers/video/fbdev/carminefb.c
@@ -7,6 +7,7 @@
* - FB1 is display 1 with unique memory area
* - both display use 32 bit colors
*/
+#include <linux/aperture.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/fb.h>
@@ -614,6 +615,10 @@ static int carminefb_probe(struct pci_dev *dev, const struct pci_device_id *ent)
struct fb_info *info;
int ret;
+ ret = aperture_remove_conflicting_pci_devices(dev, "carminefb");
+ if (ret)
+ return ret;
+
ret = pci_enable_device(dev);
if (ret)
return ret;
diff --git a/drivers/video/fbdev/chipsfb.c b/drivers/video/fbdev/chipsfb.c
index 618fb6dbbedb..5ad64714d39e 100644
--- a/drivers/video/fbdev/chipsfb.c
+++ b/drivers/video/fbdev/chipsfb.c
@@ -14,6 +14,7 @@
* more details.
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -351,7 +352,11 @@ static int chipsfb_pci_init(struct pci_dev *dp, const struct pci_device_id *ent)
struct fb_info *p;
unsigned long addr;
unsigned short cmd;
- int rc = -ENODEV;
+ int rc;
+
+ rc = aperture_remove_conflicting_pci_devices(dp, "chipsfb");
+ if (rc)
+ return rc;
if (pci_enable_device(dp) < 0) {
dev_err(&dp->dev, "Cannot enable PCI device\n");
diff --git a/drivers/video/fbdev/cirrusfb.c b/drivers/video/fbdev/cirrusfb.c
index 51e072c03e1c..4ff6f624f912 100644
--- a/drivers/video/fbdev/cirrusfb.c
+++ b/drivers/video/fbdev/cirrusfb.c
@@ -34,6 +34,7 @@
*
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -2085,6 +2086,10 @@ static int cirrusfb_pci_register(struct pci_dev *pdev,
unsigned long board_addr, board_size;
int ret;
+ ret = aperture_remove_conflicting_pci_devices(pdev, "cirrusfb");
+ if (ret)
+ return ret;
+
ret = pci_enable_device(pdev);
if (ret < 0) {
printk(KERN_ERR "cirrusfb: Cannot enable PCI device\n");
diff --git a/drivers/video/fbdev/cyber2000fb.c b/drivers/video/fbdev/cyber2000fb.c
index d45355b9a58c..be7bcf95c96a 100644
--- a/drivers/video/fbdev/cyber2000fb.c
+++ b/drivers/video/fbdev/cyber2000fb.c
@@ -33,6 +33,7 @@
* (which, incidentally, is about the same saving as a 2.5in hard disk
* entering standby mode.)
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -1720,6 +1721,10 @@ static int cyberpro_pci_probe(struct pci_dev *dev,
sprintf(name, "CyberPro%4X", id->device);
+ err = aperture_remove_conflicting_pci_devices(dev, name);
+ if (err)
+ return err;
+
err = pci_enable_device(dev);
if (err)
return err;
diff --git a/drivers/video/fbdev/geode/gx1fb_core.c b/drivers/video/fbdev/geode/gx1fb_core.c
index 5d34d89fb665..4cac7e3bb1a0 100644
--- a/drivers/video/fbdev/geode/gx1fb_core.c
+++ b/drivers/video/fbdev/geode/gx1fb_core.c
@@ -6,6 +6,7 @@
* Copyright (C) 2005 Arcom Control Systems Ltd.
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -320,6 +321,10 @@ static int gx1fb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
struct fb_info *info;
int ret;
+ ret = aperture_remove_conflicting_pci_devices(pdev, "gx1fb");
+ if (ret)
+ return ret;
+
info = gx1fb_init_fbinfo(&pdev->dev);
if (!info)
return -ENOMEM;
diff --git a/drivers/video/fbdev/geode/gxfb_core.c b/drivers/video/fbdev/geode/gxfb_core.c
index 44089b331f91..2527bd80ec5f 100644
--- a/drivers/video/fbdev/geode/gxfb_core.c
+++ b/drivers/video/fbdev/geode/gxfb_core.c
@@ -15,6 +15,7 @@
*
* 16 MiB of framebuffer memory is assumed to be available.
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -364,6 +365,10 @@ static int gxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
struct fb_videomode *modedb_ptr;
unsigned int modedb_size;
+ ret = aperture_remove_conflicting_pci_devices(pdev, "gxfb");
+ if (ret)
+ return ret;
+
info = gxfb_init_fbinfo(&pdev->dev);
if (!info)
return -ENOMEM;
diff --git a/drivers/video/fbdev/geode/lxfb_core.c b/drivers/video/fbdev/geode/lxfb_core.c
index 66c81262d18f..9d26592dbfce 100644
--- a/drivers/video/fbdev/geode/lxfb_core.c
+++ b/drivers/video/fbdev/geode/lxfb_core.c
@@ -6,6 +6,7 @@
* Built from gxfb (which is Copyright (C) 2006 Arcom Control Systems Ltd.)
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -484,6 +485,10 @@ static int lxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
struct fb_videomode *modedb_ptr;
unsigned int modedb_size;
+ ret = aperture_remove_conflicting_pci_devices(pdev, "lxfb");
+ if (ret)
+ return ret;
+
info = lxfb_init_fbinfo(&pdev->dev);
if (info == NULL)
diff --git a/drivers/video/fbdev/gxt4500.c b/drivers/video/fbdev/gxt4500.c
index e5475ae1e158..f0d36a4fdaef 100644
--- a/drivers/video/fbdev/gxt4500.c
+++ b/drivers/video/fbdev/gxt4500.c
@@ -6,6 +6,7 @@
* Copyright (C) 2006 Paul Mackerras, IBM Corp. <paulus@samba.org>
*/
+#include <linux/aperture.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/fb.h>
@@ -621,6 +622,10 @@ static int gxt4500_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
struct fb_var_screeninfo var;
enum gxt_cards cardtype;
+ err = aperture_remove_conflicting_pci_devices(pdev, "gxt4500fb");
+ if (err)
+ return err;
+
err = pci_enable_device(pdev);
if (err) {
dev_err(&pdev->dev, "gxt4500: cannot enable PCI device: %d\n",
diff --git a/drivers/video/fbdev/i740fb.c b/drivers/video/fbdev/i740fb.c
index 09dd85553d4f..23329de28e77 100644
--- a/drivers/video/fbdev/i740fb.c
+++ b/drivers/video/fbdev/i740fb.c
@@ -12,6 +12,7 @@
* i740fb by Patrick LERDA, v0.9
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -1008,6 +1009,10 @@ static int i740fb_probe(struct pci_dev *dev, const struct pci_device_id *ent)
bool found = false;
u8 *edid;
+ ret = aperture_remove_conflicting_pci_devices(dev, "i740fb");
+ if (ret)
+ return ret;
+
info = framebuffer_alloc(sizeof(struct i740fb_par), &(dev->dev));
if (!info)
return -ENOMEM;
diff --git a/drivers/video/fbdev/i810/i810_main.c b/drivers/video/fbdev/i810/i810_main.c
index 41a86efca516..ff09f8c20bfc 100644
--- a/drivers/video/fbdev/i810/i810_main.c
+++ b/drivers/video/fbdev/i810/i810_main.c
@@ -28,6 +28,7 @@
* more details.
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -2016,6 +2017,10 @@ static int i810fb_init_pci(struct pci_dev *dev,
struct fb_videomode mode;
int err = -1, vfreq, hfreq, pixclock;
+ err = aperture_remove_conflicting_pci_devices(dev, "i810fb");
+ if (err)
+ return err;
+
info = framebuffer_alloc(sizeof(struct i810fb_par), &dev->dev);
if (!info)
return -ENOMEM;
diff --git a/drivers/video/fbdev/imsttfb.c b/drivers/video/fbdev/imsttfb.c
index f489386855c0..d7edb9c5d3a3 100644
--- a/drivers/video/fbdev/imsttfb.c
+++ b/drivers/video/fbdev/imsttfb.c
@@ -16,6 +16,7 @@
* more details.
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -1469,7 +1470,12 @@ static int imsttfb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
struct imstt_par *par;
struct fb_info *info;
struct device_node *dp;
- int ret = -ENOMEM;
+ int ret;
+
+ ret = aperture_remove_conflicting_pci_devices(pdev, "imsttfb");
+ if (ret)
+ return ret;
+ ret = -ENOMEM;
dp = pci_device_to_OF_node(pdev);
if(dp)
diff --git a/drivers/video/fbdev/intelfb/intelfbdrv.c b/drivers/video/fbdev/intelfb/intelfbdrv.c
index 5647fca8c49a..d4a2891a9a7a 100644
--- a/drivers/video/fbdev/intelfb/intelfbdrv.c
+++ b/drivers/video/fbdev/intelfb/intelfbdrv.c
@@ -107,6 +107,7 @@
* Add support for 945GME. (Phil Endecott <spam_from_intelfb@chezphil.org>)
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -483,6 +484,10 @@ static int intelfb_pci_register(struct pci_dev *pdev,
DBG_MSG("intelfb_pci_register\n");
+ err = aperture_remove_conflicting_pci_devices(pdev, "intelfb");
+ if (err)
+ return err;
+
num_registered++;
if (num_registered != 1) {
ERR_MSG("Attempted to register %d devices "
diff --git a/drivers/video/fbdev/kyro/fbdev.c b/drivers/video/fbdev/kyro/fbdev.c
index d57772f96ad2..b4b93054c520 100644
--- a/drivers/video/fbdev/kyro/fbdev.c
+++ b/drivers/video/fbdev/kyro/fbdev.c
@@ -9,6 +9,7 @@
* for more details.
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
@@ -676,6 +677,10 @@ static int kyrofb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
unsigned long size;
int err;
+ err = aperture_remove_conflicting_pci_devices(pdev, "kyrofb");
+ if (err)
+ return err;
+
if ((err = pci_enable_device(pdev))) {
printk(KERN_WARNING "kyrofb: Can't enable pdev: %d\n", err);
return err;
diff --git a/drivers/video/fbdev/matrox/matroxfb_base.c b/drivers/video/fbdev/matrox/matroxfb_base.c
index 236521b19daf..3e26346c05a2 100644
--- a/drivers/video/fbdev/matrox/matroxfb_base.c
+++ b/drivers/video/fbdev/matrox/matroxfb_base.c
@@ -100,6 +100,7 @@
*
*/
+#include <linux/aperture.h>
#include <linux/version.h>
#include "matroxfb_base.h"
@@ -2044,6 +2045,10 @@ static int matroxfb_probe(struct pci_dev* pdev, const struct pci_device_id* dumm
u_int32_t cmd;
DBG(__func__)
+ err = aperture_remove_conflicting_pci_devices(pdev, "matroxfb");
+ if (err)
+ return err;
+
svid = pdev->subsystem_vendor;
sid = pdev->subsystem_device;
for (b = dev_list; b->vendor; b++) {
diff --git a/drivers/video/fbdev/mb862xx/mb862xxfbdrv.c b/drivers/video/fbdev/mb862xx/mb862xxfbdrv.c
index a7508f5be343..96800c9c9cd9 100644
--- a/drivers/video/fbdev/mb862xx/mb862xxfbdrv.c
+++ b/drivers/video/fbdev/mb862xx/mb862xxfbdrv.c
@@ -10,6 +10,7 @@
#undef DEBUG
+#include <linux/aperture.h>
#include <linux/fb.h>
#include <linux/delay.h>
#include <linux/uaccess.h>
@@ -999,6 +1000,10 @@ static int mb862xx_pci_probe(struct pci_dev *pdev,
struct device *dev = &pdev->dev;
int ret;
+ ret = aperture_remove_conflicting_pci_devices(pdev, "mb862xxfb");
+ if (ret)
+ return ret;
+
ret = pci_enable_device(pdev);
if (ret < 0) {
dev_err(dev, "Cannot enable PCI device\n");
diff --git a/drivers/video/fbdev/neofb.c b/drivers/video/fbdev/neofb.c
index 8ad2a79623af..93a2d2d1abe8 100644
--- a/drivers/video/fbdev/neofb.c
+++ b/drivers/video/fbdev/neofb.c
@@ -54,6 +54,7 @@
*
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -2029,6 +2030,10 @@ static int neofb_probe(struct pci_dev *dev, const struct pci_device_id *id)
DBG("neofb_probe");
+ err = aperture_remove_conflicting_pci_devices(dev, "neofb");
+ if (err)
+ return err;
+
err = pci_enable_device(dev);
if (err)
return err;
diff --git a/drivers/video/fbdev/nvidia/nvidia.c b/drivers/video/fbdev/nvidia/nvidia.c
index a372a183c1f0..329e2e8133c6 100644
--- a/drivers/video/fbdev/nvidia/nvidia.c
+++ b/drivers/video/fbdev/nvidia/nvidia.c
@@ -9,6 +9,7 @@
*
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -1276,11 +1277,15 @@ static int nvidiafb_probe(struct pci_dev *pd, const struct pci_device_id *ent)
struct nvidia_par *par;
struct fb_info *info;
unsigned short cmd;
-
+ int ret;
NVTRACE_ENTER();
assert(pd != NULL);
+ ret = aperture_remove_conflicting_pci_devices(pd, "nvidiafb");
+ if (ret)
+ return ret;
+
info = framebuffer_alloc(sizeof(struct nvidia_par), &pd->dev);
if (!info)
diff --git a/drivers/video/fbdev/pm2fb.c b/drivers/video/fbdev/pm2fb.c
index d3be2c64f1c0..bc80d8498aeb 100644
--- a/drivers/video/fbdev/pm2fb.c
+++ b/drivers/video/fbdev/pm2fb.c
@@ -27,6 +27,7 @@
*
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
@@ -1516,6 +1517,10 @@ static int pm2fb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
int err;
int retval = -ENXIO;
+ err = aperture_remove_conflicting_pci_devices(pdev, "pm2fb");
+ if (err)
+ return err;
+
err = pci_enable_device(pdev);
if (err) {
printk(KERN_WARNING "pm2fb: Can't enable pdev: %d\n", err);
diff --git a/drivers/video/fbdev/pm3fb.c b/drivers/video/fbdev/pm3fb.c
index a8faf46adeb1..ba69846d444f 100644
--- a/drivers/video/fbdev/pm3fb.c
+++ b/drivers/video/fbdev/pm3fb.c
@@ -22,6 +22,7 @@
*
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -1315,6 +1316,10 @@ static int pm3fb_probe(struct pci_dev *dev, const struct pci_device_id *ent)
int err;
int retval = -ENXIO;
+ err = aperture_remove_conflicting_pci_devices(dev, "pm3fb");
+ if (err)
+ return err;
+
err = pci_enable_device(dev);
if (err) {
printk(KERN_WARNING "pm3fb: Can't enable PCI dev: %d\n", err);
diff --git a/drivers/video/fbdev/pvr2fb.c b/drivers/video/fbdev/pvr2fb.c
index f4add36cb5f4..b73ad14efa20 100644
--- a/drivers/video/fbdev/pvr2fb.c
+++ b/drivers/video/fbdev/pvr2fb.c
@@ -45,6 +45,7 @@
#undef DEBUG
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -942,6 +943,10 @@ static int pvr2fb_pci_probe(struct pci_dev *pdev,
{
int ret;
+ ret = aperture_remove_conflicting_pci_devices(pdev, "pvrfb");
+ if (ret)
+ return ret;
+
ret = pci_enable_device(pdev);
if (ret) {
printk(KERN_ERR "pvr2fb: PCI enable failed\n");
diff --git a/drivers/video/fbdev/riva/fbdev.c b/drivers/video/fbdev/riva/fbdev.c
index 5bafc44c591b..0ea74e28f915 100644
--- a/drivers/video/fbdev/riva/fbdev.c
+++ b/drivers/video/fbdev/riva/fbdev.c
@@ -29,6 +29,7 @@
* doublescan modes are broken
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -1898,6 +1899,10 @@ static int rivafb_probe(struct pci_dev *pd, const struct pci_device_id *ent)
NVTRACE_ENTER();
assert(pd != NULL);
+ ret = aperture_remove_conflicting_pci_devices(pd, "rivafb");
+ if (ret)
+ return ret;
+
info = framebuffer_alloc(sizeof(struct riva_par), &pd->dev);
if (!info) {
ret = -ENOMEM;
diff --git a/drivers/video/fbdev/s3fb.c b/drivers/video/fbdev/s3fb.c
index b93c8eb02336..f66c4de0e188 100644
--- a/drivers/video/fbdev/s3fb.c
+++ b/drivers/video/fbdev/s3fb.c
@@ -11,6 +11,7 @@
* which is based on the code of neofb.
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -1129,6 +1130,10 @@ static int s3_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
return -ENODEV;
}
+ rc = aperture_remove_conflicting_pci_devices(dev, "s3fb");
+ if (rc)
+ return rc;
+
/* Allocate and fill driver data structure */
info = framebuffer_alloc(sizeof(struct s3fb_info), &(dev->dev));
if (!info)
diff --git a/drivers/video/fbdev/savage/savagefb_driver.c b/drivers/video/fbdev/savage/savagefb_driver.c
index 8114c921ceb8..b7818b652698 100644
--- a/drivers/video/fbdev/savage/savagefb_driver.c
+++ b/drivers/video/fbdev/savage/savagefb_driver.c
@@ -41,6 +41,7 @@
*
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -2176,6 +2177,10 @@ static int savagefb_probe(struct pci_dev *dev, const struct pci_device_id *id)
DBG("savagefb_probe");
+ err = aperture_remove_conflicting_pci_devices(dev, "savagefb");
+ if (err)
+ return err;
+
info = framebuffer_alloc(sizeof(struct savagefb_par), &dev->dev);
if (!info)
return -ENOMEM;
diff --git a/drivers/video/fbdev/sis/sis_main.c b/drivers/video/fbdev/sis/sis_main.c
index f28fd69d5eb7..7114c5c17c91 100644
--- a/drivers/video/fbdev/sis/sis_main.c
+++ b/drivers/video/fbdev/sis/sis_main.c
@@ -19,6 +19,7 @@
* which is (c) 1998 Gerd Knorr <kraxel@goldbach.in-berlin.de>
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
@@ -5849,6 +5850,10 @@ static int sisfb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if(sisfb_off)
return -ENXIO;
+ ret = aperture_remove_conflicting_pci_devices(pdev, "sisfb");
+ if (ret)
+ return ret;
+
sis_fb_info = framebuffer_alloc(sizeof(*ivideo), &pdev->dev);
if(!sis_fb_info)
return -ENOMEM;
diff --git a/drivers/video/fbdev/skeletonfb.c b/drivers/video/fbdev/skeletonfb.c
index 304320ce6c6f..125df366e23a 100644
--- a/drivers/video/fbdev/skeletonfb.c
+++ b/drivers/video/fbdev/skeletonfb.c
@@ -42,6 +42,7 @@
* more details.
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -668,6 +669,13 @@ static int xxxfb_probe(struct pci_dev *dev, const struct pci_device_id *ent)
struct device *device = &dev->dev; /* or &pdev->dev */
int cmap_len, retval;
+ /*
+ * Remove firmware-based drivers that create resource conflicts.
+ */
+ retval = aperture_remove_conflicting_pci_devices(pdev, "xxxfb");
+ if (retval)
+ return retval;
+
/*
* Dynamically allocate info and par
*/
diff --git a/drivers/video/fbdev/sm712fb.c b/drivers/video/fbdev/sm712fb.c
index 092a1caa1208..3baf33635e65 100644
--- a/drivers/video/fbdev/sm712fb.c
+++ b/drivers/video/fbdev/sm712fb.c
@@ -18,6 +18,7 @@
* Framebuffer driver for Silicon Motion SM710, SM712, SM721 and SM722 chips
*/
+#include <linux/aperture.h>
#include <linux/io.h>
#include <linux/fb.h>
#include <linux/pci.h>
@@ -1502,6 +1503,10 @@ static int smtcfb_pci_probe(struct pci_dev *pdev,
dev_info(&pdev->dev, "Silicon Motion display driver.\n");
+ err = aperture_remove_conflicting_pci_devices(pdev, "smtcfb");
+ if (err)
+ return err;
+
err = pci_enable_device(pdev); /* enable SMTC chip */
if (err)
return err;
diff --git a/drivers/video/fbdev/sstfb.c b/drivers/video/fbdev/sstfb.c
index 535ef4693cd4..73ca2782ebfc 100644
--- a/drivers/video/fbdev/sstfb.c
+++ b/drivers/video/fbdev/sstfb.c
@@ -80,6 +80,7 @@
* Includes
*/
+#include <linux/aperture.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/module.h>
@@ -1326,6 +1327,10 @@ static int sstfb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
struct sst_spec *spec;
int err;
+ err = aperture_remove_conflicting_pci_devices(pdev, "sstfb");
+ if (err)
+ return err;
+
/* Enable device in PCI config. */
if ((err=pci_enable_device(pdev))) {
printk(KERN_ERR "cannot enable device\n");
diff --git a/drivers/video/fbdev/sunxvr2500.c b/drivers/video/fbdev/sunxvr2500.c
index 1d3bacd9d5ac..81d59613ea1f 100644
--- a/drivers/video/fbdev/sunxvr2500.c
+++ b/drivers/video/fbdev/sunxvr2500.c
@@ -5,6 +5,7 @@
* Copyright (C) 2007 David S. Miller (davem@davemloft.net)
*/
+#include <linux/aperture.h>
#include <linux/kernel.h>
#include <linux/fb.h>
#include <linux/pci.h>
@@ -123,6 +124,10 @@ static int s3d_pci_register(struct pci_dev *pdev,
struct s3d_info *sp;
int err;
+ err = aperture_remove_conflicting_pci_devices(pdev, "s3dfb");
+ if (err)
+ return err;
+
err = pci_enable_device(pdev);
if (err < 0) {
printk(KERN_ERR "s3d: Cannot enable PCI device %s\n",
diff --git a/drivers/video/fbdev/sunxvr500.c b/drivers/video/fbdev/sunxvr500.c
index 9daf17b11106..3a51b2a1480c 100644
--- a/drivers/video/fbdev/sunxvr500.c
+++ b/drivers/video/fbdev/sunxvr500.c
@@ -5,6 +5,7 @@
* Copyright (C) 2007 David S. Miller (davem@davemloft.net)
*/
+#include <linux/aperture.h>
#include <linux/kernel.h>
#include <linux/fb.h>
#include <linux/pci.h>
@@ -249,6 +250,10 @@ static int e3d_pci_register(struct pci_dev *pdev,
unsigned int line_length;
int err;
+ err = aperture_remove_conflicting_pci_devices(pdev, "e3dfb");
+ if (err)
+ return err;
+
of_node = pci_device_to_OF_node(pdev);
if (!of_node) {
printk(KERN_ERR "e3d: Cannot find OF node of %s\n",
diff --git a/drivers/video/fbdev/tdfxfb.c b/drivers/video/fbdev/tdfxfb.c
index 67e37a62b07c..059e0174e139 100644
--- a/drivers/video/fbdev/tdfxfb.c
+++ b/drivers/video/fbdev/tdfxfb.c
@@ -64,6 +64,7 @@
*
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -1376,6 +1377,10 @@ static int tdfxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
struct fb_monspecs *specs;
bool found;
+ err = aperture_remove_conflicting_pci_devices(pdev, "tdfxfb");
+ if (err)
+ return err;
+
err = pci_enable_device(pdev);
if (err) {
printk(KERN_ERR "tdfxfb: Can't enable pdev: %d\n", err);
diff --git a/drivers/video/fbdev/tgafb.c b/drivers/video/fbdev/tgafb.c
index 9266c76783cc..4600138e3bef 100644
--- a/drivers/video/fbdev/tgafb.c
+++ b/drivers/video/fbdev/tgafb.c
@@ -12,6 +12,7 @@
* more details.
*/
+#include <linux/aperture.h>
#include <linux/bitrev.h>
#include <linux/compiler.h>
#include <linux/delay.h>
@@ -106,6 +107,12 @@ static struct pci_driver tgafb_pci_driver = {
static int tgafb_pci_register(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
+ int ret;
+
+ ret = aperture_remove_conflicting_pci_devices(pdev, "tgafb");
+ if (ret)
+ return ret;
+
return tgafb_register(&pdev->dev);
}
diff --git a/drivers/video/fbdev/tridentfb.c b/drivers/video/fbdev/tridentfb.c
index 319131bd72cf..6813df793c49 100644
--- a/drivers/video/fbdev/tridentfb.c
+++ b/drivers/video/fbdev/tridentfb.c
@@ -16,6 +16,7 @@
* timing value tweaking so it looks good on every monitor in every mode
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/fb.h>
#include <linux/init.h>
@@ -1470,6 +1471,10 @@ static int trident_pci_probe(struct pci_dev *dev,
int chip_id;
bool found = false;
+ err = aperture_remove_conflicting_pci_devices(dev, "tridentfb");
+ if (err)
+ return err;
+
err = pci_enable_device(dev);
if (err)
return err;
diff --git a/drivers/video/fbdev/vermilion/vermilion.c b/drivers/video/fbdev/vermilion/vermilion.c
index ff61605b8764..82b36dbb5b1a 100644
--- a/drivers/video/fbdev/vermilion/vermilion.c
+++ b/drivers/video/fbdev/vermilion/vermilion.c
@@ -14,6 +14,7 @@
* Alan Hourihane <alanh-at-tungstengraphics-dot-com>
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -442,7 +443,11 @@ static int vml_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
struct vml_info *vinfo;
struct fb_info *info;
struct vml_par *par;
- int err = 0;
+ int err;
+
+ err = aperture_remove_conflicting_pci_devices(dev, "vmlfb");
+ if (err)
+ return err;
par = kzalloc(sizeof(*par), GFP_KERNEL);
if (par == NULL)
diff --git a/drivers/video/fbdev/via/via-core.c b/drivers/video/fbdev/via/via-core.c
index 89d75079b730..2ee8fcae08df 100644
--- a/drivers/video/fbdev/via/via-core.c
+++ b/drivers/video/fbdev/via/via-core.c
@@ -8,6 +8,7 @@
/*
* Core code for the Via multifunction framebuffer device.
*/
+#include <linux/aperture.h>
#include <linux/via-core.h>
#include <linux/via_i2c.h>
#include <linux/via-gpio.h>
@@ -617,6 +618,10 @@ static int via_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
int ret;
+ ret = aperture_remove_conflicting_pci_devices(pdev, "viafb");
+ if (ret)
+ return ret;
+
ret = pci_enable_device(pdev);
if (ret)
return ret;
diff --git a/drivers/video/fbdev/vt8623fb.c b/drivers/video/fbdev/vt8623fb.c
index a92a8c670cf0..62318cef5f8c 100644
--- a/drivers/video/fbdev/vt8623fb.c
+++ b/drivers/video/fbdev/vt8623fb.c
@@ -12,6 +12,7 @@
* (http://davesdomain.org.uk/viafb/)
*/
+#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -670,6 +671,10 @@ static int vt8623_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
return -ENODEV;
}
+ rc = aperture_remove_conflicting_pci_devices(dev, "vt8623fb");
+ if (rc)
+ return rc;
+
/* Allocate and fill driver data structure */
info = framebuffer_alloc(sizeof(struct vt8623fb_info), &(dev->dev));
if (!info)
--
2.36.1
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH v2 07/11] video/aperture: Disable and unregister sysfb devices via aperture helpers
2022-07-18 7:23 [PATCH v2 00/11] fbdev: Maintain device ownership with aperture helpers Thomas Zimmermann
` (5 preceding siblings ...)
2022-07-18 7:23 ` [PATCH v2 06/11] fbdev: Remove conflicting devices on PCI bus Thomas Zimmermann
@ 2022-07-18 7:23 ` Thomas Zimmermann
2023-03-20 1:47 ` Samuel Čavoj
2022-07-18 7:23 ` [PATCH v2 08/11] video: Provide constants for VGA I/O range Thomas Zimmermann
` (3 subsequent siblings)
10 siblings, 1 reply; 21+ messages in thread
From: Thomas Zimmermann @ 2022-07-18 7:23 UTC (permalink / raw)
To: javierm, deller, daniel, sam, maxime
Cc: linux-fbdev, Daniel Vetter, linux-staging, Changcheng Deng,
dri-devel, Thomas Zimmermann, Zhen Lei, Alex Deucher
Call sysfb_disable() before removing conflicting devices in aperture
helpers. Fixes sysfb state if fbdev has been disabled.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Fixes: fb84efa28a48 ("drm/aperture: Run fbdev removal before internal helpers")
Cc: Zack Rusin <zackr@vmware.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Zhen Lei <thunder.leizhen@huawei.com>
Cc: Changcheng Deng <deng.changcheng@zte.com.cn>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: dri-devel@lists.freedesktop.org
---
drivers/video/aperture.c | 14 ++++++++++++++
drivers/video/fbdev/core/fbmem.c | 12 ------------
2 files changed, 14 insertions(+), 12 deletions(-)
diff --git a/drivers/video/aperture.c b/drivers/video/aperture.c
index f42a0d8bc211..101e13c2cf41 100644
--- a/drivers/video/aperture.c
+++ b/drivers/video/aperture.c
@@ -8,6 +8,7 @@
#include <linux/pci.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
+#include <linux/sysfb.h>
#include <linux/types.h>
#include <linux/vgaarb.h>
@@ -286,7 +287,20 @@ int aperture_remove_conflicting_devices(resource_size_t base, resource_size_t si
#if IS_REACHABLE(CONFIG_FB)
struct apertures_struct *a;
int ret;
+#endif
+
+ /*
+ * If a driver asked to unregister a platform device registered by
+ * sysfb, then can be assumed that this is a driver for a display
+ * that is set up by the system firmware and has a generic driver.
+ *
+ * Drivers for devices that don't have a generic driver will never
+ * ask for this, so let's assume that a real driver for the display
+ * was already probed and prevent sysfb to register devices later.
+ */
+ sysfb_disable();
+#if IS_REACHABLE(CONFIG_FB)
a = alloc_apertures(1);
if (!a)
return -ENOMEM;
diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
index 877de85309f3..3ee3ea018245 100644
--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -19,7 +19,6 @@
#include <linux/kernel.h>
#include <linux/major.h>
#include <linux/slab.h>
-#include <linux/sysfb.h>
#include <linux/mm.h>
#include <linux/mman.h>
#include <linux/vt.h>
@@ -1765,17 +1764,6 @@ int remove_conflicting_framebuffers(struct apertures_struct *a,
do_free = true;
}
- /*
- * If a driver asked to unregister a platform device registered by
- * sysfb, then can be assumed that this is a driver for a display
- * that is set up by the system firmware and has a generic driver.
- *
- * Drivers for devices that don't have a generic driver will never
- * ask for this, so let's assume that a real driver for the display
- * was already probed and prevent sysfb to register devices later.
- */
- sysfb_disable();
-
mutex_lock(®istration_lock);
do_remove_conflicting_framebuffers(a, name, primary);
mutex_unlock(®istration_lock);
--
2.36.1
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH v2 08/11] video: Provide constants for VGA I/O range
2022-07-18 7:23 [PATCH v2 00/11] fbdev: Maintain device ownership with aperture helpers Thomas Zimmermann
` (6 preceding siblings ...)
2022-07-18 7:23 ` [PATCH v2 07/11] video/aperture: Disable and unregister sysfb devices via aperture helpers Thomas Zimmermann
@ 2022-07-18 7:23 ` Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 09/11] video/aperture: Remove conflicting VGA devices, if any Thomas Zimmermann
` (2 subsequent siblings)
10 siblings, 0 replies; 21+ messages in thread
From: Thomas Zimmermann @ 2022-07-18 7:23 UTC (permalink / raw)
To: javierm, deller, daniel, sam, maxime
Cc: linux-fbdev, linux-staging, Thomas Zimmermann, dri-devel
Provide VGA_FB_ constants for the VGA framebuffer I/O range and convert
fbdev code. In the case of vga16fb, this is a rename of the existing
constants VGA_FB_PHYS and VGA_FB_PHYS_LEN.
v2:
* clarify relationship with old constants in vga16fb (Javier)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
drivers/video/fbdev/core/fbmem.c | 4 ++--
drivers/video/fbdev/vga16fb.c | 15 ++++++---------
include/video/vga.h | 2 ++
3 files changed, 10 insertions(+), 11 deletions(-)
diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
index 3ee3ea018245..2237049327db 100644
--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -39,6 +39,7 @@
#include <asm/fb.h>
+#include <video/vga.h>
/*
* Frame buffer device initialization and setup routines
@@ -1549,7 +1550,6 @@ static bool fb_do_apertures_overlap(struct apertures_struct *gena,
static void do_unregister_framebuffer(struct fb_info *fb_info);
-#define VGA_FB_PHYS 0xA0000
static void do_remove_conflicting_framebuffers(struct apertures_struct *a,
const char *name, bool primary)
{
@@ -1568,7 +1568,7 @@ static void do_remove_conflicting_framebuffers(struct apertures_struct *a,
device = registered_fb[i]->device;
if (fb_do_apertures_overlap(gen_aper, a) ||
(primary && gen_aper && gen_aper->count &&
- gen_aper->ranges[0].base == VGA_FB_PHYS)) {
+ gen_aper->ranges[0].base == VGA_FB_PHYS_BASE)) {
printk(KERN_INFO "fb%d: switching to %s from %s\n",
i, name, registered_fb[i]->fix.id);
diff --git a/drivers/video/fbdev/vga16fb.c b/drivers/video/fbdev/vga16fb.c
index 3312b6a4e00d..35cf51ae3292 100644
--- a/drivers/video/fbdev/vga16fb.c
+++ b/drivers/video/fbdev/vga16fb.c
@@ -25,9 +25,6 @@
#include <asm/io.h>
#include <video/vga.h>
-#define VGA_FB_PHYS 0xA0000
-#define VGA_FB_PHYS_LEN 65536
-
#define MODE_SKIP4 1
#define MODE_8BPP 2
#define MODE_CFB 4
@@ -87,8 +84,8 @@ static struct fb_var_screeninfo vga16fb_defined = {
/* name should not depend on EGA/VGA */
static const struct fb_fix_screeninfo vga16fb_fix = {
.id = "VGA16 VGA",
- .smem_start = VGA_FB_PHYS,
- .smem_len = VGA_FB_PHYS_LEN,
+ .smem_start = VGA_FB_PHYS_BASE,
+ .smem_len = VGA_FB_PHYS_SIZE,
.type = FB_TYPE_VGA_PLANES,
.type_aux = FB_AUX_VGA_PLANES_VGA4,
.visual = FB_VISUAL_PSEUDOCOLOR,
@@ -1333,8 +1330,8 @@ static int vga16fb_probe(struct platform_device *dev)
goto err_ioremap;
}
- /* XXX share VGA_FB_PHYS and I/O region with vgacon and others */
- info->screen_base = (void __iomem *)VGA_MAP_MEM(VGA_FB_PHYS, 0);
+ /* XXX share VGA_FB_PHYS_BASE and I/O region with vgacon and others */
+ info->screen_base = (void __iomem *)VGA_MAP_MEM(VGA_FB_PHYS_BASE, 0);
if (!info->screen_base) {
printk(KERN_ERR "vga16fb: unable to map device\n");
@@ -1385,8 +1382,8 @@ static int vga16fb_probe(struct platform_device *dev)
vga16fb_update_fix(info);
- info->apertures->ranges[0].base = VGA_FB_PHYS;
- info->apertures->ranges[0].size = VGA_FB_PHYS_LEN;
+ info->apertures->ranges[0].base = VGA_FB_PHYS_BASE;
+ info->apertures->ranges[0].size = VGA_FB_PHYS_SIZE;
if (register_framebuffer(info) < 0) {
printk(KERN_ERR "vga16fb: unable to register framebuffer\n");
diff --git a/include/video/vga.h b/include/video/vga.h
index ef8e9fa9b9bd..947c0abd04ef 100644
--- a/include/video/vga.h
+++ b/include/video/vga.h
@@ -22,6 +22,8 @@
#include <asm/vga.h>
#include <asm/byteorder.h>
+#define VGA_FB_PHYS_BASE 0xA0000 /* VGA framebuffer I/O base */
+#define VGA_FB_PHYS_SIZE 65536 /* VGA framebuffer I/O size */
/* Some of the code below is taken from SVGAlib. The original,
unmodified copyright notice for that code is below. */
--
2.36.1
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH v2 09/11] video/aperture: Remove conflicting VGA devices, if any
2022-07-18 7:23 [PATCH v2 00/11] fbdev: Maintain device ownership with aperture helpers Thomas Zimmermann
` (7 preceding siblings ...)
2022-07-18 7:23 ` [PATCH v2 08/11] video: Provide constants for VGA I/O range Thomas Zimmermann
@ 2022-07-18 7:23 ` Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 10/11] fbdev: Acquire framebuffer apertures for firmware devices Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 11/11] fbdev: Remove conflict-handling code Thomas Zimmermann
10 siblings, 0 replies; 21+ messages in thread
From: Thomas Zimmermann @ 2022-07-18 7:23 UTC (permalink / raw)
To: javierm, deller, daniel, sam, maxime
Cc: linux-fbdev, linux-staging, Thomas Zimmermann, dri-devel
On the primary graphics adapter, a driver might conflict with a VGA
driver that controls the VGA framebuffer I/O range. Remove the VGA
driver from the aperture helpers. Until now, this case has been
hendled by fbdev, but it should work even with fbdev disabled.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
drivers/video/aperture.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/video/aperture.c b/drivers/video/aperture.c
index 101e13c2cf41..abc691284a77 100644
--- a/drivers/video/aperture.c
+++ b/drivers/video/aperture.c
@@ -12,6 +12,8 @@
#include <linux/types.h>
#include <linux/vgaarb.h>
+#include <video/vga.h>
+
/**
* DOC: overview
*
@@ -300,6 +302,16 @@ int aperture_remove_conflicting_devices(resource_size_t base, resource_size_t si
*/
sysfb_disable();
+ aperture_detach_devices(base, size);
+
+ /*
+ * If this is the primary adapter, there could be a VGA device
+ * that consumes the VGA framebuffer I/O range. Remove this device
+ * as well.
+ */
+ if (primary)
+ aperture_detach_devices(VGA_FB_PHYS_BASE, VGA_FB_PHYS_SIZE);
+
#if IS_REACHABLE(CONFIG_FB)
a = alloc_apertures(1);
if (!a)
@@ -315,8 +327,6 @@ int aperture_remove_conflicting_devices(resource_size_t base, resource_size_t si
return ret;
#endif
- aperture_detach_devices(base, size);
-
return 0;
}
EXPORT_SYMBOL(aperture_remove_conflicting_devices);
--
2.36.1
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH v2 10/11] fbdev: Acquire framebuffer apertures for firmware devices
2022-07-18 7:23 [PATCH v2 00/11] fbdev: Maintain device ownership with aperture helpers Thomas Zimmermann
` (8 preceding siblings ...)
2022-07-18 7:23 ` [PATCH v2 09/11] video/aperture: Remove conflicting VGA devices, if any Thomas Zimmermann
@ 2022-07-18 7:23 ` Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 11/11] fbdev: Remove conflict-handling code Thomas Zimmermann
10 siblings, 0 replies; 21+ messages in thread
From: Thomas Zimmermann @ 2022-07-18 7:23 UTC (permalink / raw)
To: javierm, deller, daniel, sam, maxime
Cc: linux-fbdev, linux-staging, Thomas Zimmermann, dri-devel
When registering a generic framebuffer, automatically acquire ownership
of the framebuffer's I/O range. The device will now be handled by the
aperture helpers. Fbdev-based conflict handling is no longer required.
v2:
* use fb_ prefix instead of fbm_ (Javier)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
drivers/video/fbdev/core/fbmem.c | 33 ++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
index 2237049327db..928a8afcc5a1 100644
--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -13,6 +13,7 @@
#include <linux/module.h>
+#include <linux/aperture.h>
#include <linux/compat.h>
#include <linux/types.h>
#include <linux/errno.h>
@@ -1739,6 +1740,32 @@ static void do_unregister_framebuffer(struct fb_info *fb_info)
put_fb_info(fb_info);
}
+static int fb_aperture_acquire_for_platform_device(struct fb_info *fb_info)
+{
+ struct apertures_struct *ap = fb_info->apertures;
+ struct device *dev = fb_info->device;
+ struct platform_device *pdev;
+ unsigned int i;
+ int ret;
+
+ if (!ap)
+ return 0;
+
+ if (!dev_is_platform(dev))
+ return 0;
+
+ pdev = to_platform_device(dev);
+
+ for (ret = 0, i = 0; i < ap->count; ++i) {
+ ret = devm_aperture_acquire_for_platform_device(pdev, ap->ranges[i].base,
+ ap->ranges[i].size);
+ if (ret)
+ break;
+ }
+
+ return ret;
+}
+
/**
* remove_conflicting_framebuffers - remove firmware-configured framebuffers
* @a: memory range, users of which are to be removed
@@ -1789,6 +1816,12 @@ register_framebuffer(struct fb_info *fb_info)
{
int ret;
+ if (fb_info->flags & FBINFO_MISC_FIRMWARE) {
+ ret = fb_aperture_acquire_for_platform_device(fb_info);
+ if (ret)
+ return ret;
+ }
+
mutex_lock(®istration_lock);
ret = do_register_framebuffer(fb_info);
mutex_unlock(®istration_lock);
--
2.36.1
^ permalink raw reply related [flat|nested] 21+ messages in thread
* [PATCH v2 11/11] fbdev: Remove conflict-handling code
2022-07-18 7:23 [PATCH v2 00/11] fbdev: Maintain device ownership with aperture helpers Thomas Zimmermann
` (9 preceding siblings ...)
2022-07-18 7:23 ` [PATCH v2 10/11] fbdev: Acquire framebuffer apertures for firmware devices Thomas Zimmermann
@ 2022-07-18 7:23 ` Thomas Zimmermann
10 siblings, 0 replies; 21+ messages in thread
From: Thomas Zimmermann @ 2022-07-18 7:23 UTC (permalink / raw)
To: javierm, deller, daniel, sam, maxime
Cc: linux-fbdev, linux-staging, Thomas Zimmermann, dri-devel
Remove the call to do_remove_conflicting_framebuffers() from the
framebuffer registration. Aperture helpers take care of removing
conflicting devices. With all ownership information stored in the
aperture datastrcutures, remove remove_conflicting_framebuffers()
entirely.
This change also rectifies DRM generic-framebuffer registration, which
tried to unregister conflicting framebuffers, even though it's entirely
build on top of DRM.
v2:
* remove internal aperture-overlap helpers, which are
now unused
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
---
drivers/video/aperture.c | 21 -----
drivers/video/fbdev/core/fbmem.c | 136 -------------------------------
include/linux/fb.h | 2 -
3 files changed, 159 deletions(-)
diff --git a/drivers/video/aperture.c b/drivers/video/aperture.c
index abc691284a77..9e6bcc03a1a4 100644
--- a/drivers/video/aperture.c
+++ b/drivers/video/aperture.c
@@ -2,7 +2,6 @@
#include <linux/aperture.h>
#include <linux/device.h>
-#include <linux/fb.h> /* for old fbdev helpers */
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/pci.h>
@@ -286,11 +285,6 @@ static void aperture_detach_devices(resource_size_t base, resource_size_t size)
int aperture_remove_conflicting_devices(resource_size_t base, resource_size_t size,
bool primary, const char *name)
{
-#if IS_REACHABLE(CONFIG_FB)
- struct apertures_struct *a;
- int ret;
-#endif
-
/*
* If a driver asked to unregister a platform device registered by
* sysfb, then can be assumed that this is a driver for a display
@@ -312,21 +306,6 @@ int aperture_remove_conflicting_devices(resource_size_t base, resource_size_t si
if (primary)
aperture_detach_devices(VGA_FB_PHYS_BASE, VGA_FB_PHYS_SIZE);
-#if IS_REACHABLE(CONFIG_FB)
- a = alloc_apertures(1);
- if (!a)
- return -ENOMEM;
-
- a->ranges[0].base = base;
- a->ranges[0].size = size;
-
- ret = remove_conflicting_framebuffers(a, name, primary);
- kfree(a);
-
- if (ret)
- return ret;
-#endif
-
return 0;
}
EXPORT_SYMBOL(aperture_remove_conflicting_devices);
diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
index 928a8afcc5a1..c80305d34dae 100644
--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -1514,102 +1514,6 @@ static int fb_check_foreignness(struct fb_info *fi)
return 0;
}
-static bool apertures_overlap(struct aperture *gen, struct aperture *hw)
-{
- /* is the generic aperture base the same as the HW one */
- if (gen->base == hw->base)
- return true;
- /* is the generic aperture base inside the hw base->hw base+size */
- if (gen->base > hw->base && gen->base < hw->base + hw->size)
- return true;
- return false;
-}
-
-static bool fb_do_apertures_overlap(struct apertures_struct *gena,
- struct apertures_struct *hwa)
-{
- int i, j;
- if (!hwa || !gena)
- return false;
-
- for (i = 0; i < hwa->count; ++i) {
- struct aperture *h = &hwa->ranges[i];
- for (j = 0; j < gena->count; ++j) {
- struct aperture *g = &gena->ranges[j];
- printk(KERN_DEBUG "checking generic (%llx %llx) vs hw (%llx %llx)\n",
- (unsigned long long)g->base,
- (unsigned long long)g->size,
- (unsigned long long)h->base,
- (unsigned long long)h->size);
- if (apertures_overlap(g, h))
- return true;
- }
- }
-
- return false;
-}
-
-static void do_unregister_framebuffer(struct fb_info *fb_info);
-
-static void do_remove_conflicting_framebuffers(struct apertures_struct *a,
- const char *name, bool primary)
-{
- int i;
-
-restart_removal:
- /* check all firmware fbs and kick off if the base addr overlaps */
- for_each_registered_fb(i) {
- struct apertures_struct *gen_aper;
- struct device *device;
-
- if (!(registered_fb[i]->flags & FBINFO_MISC_FIRMWARE))
- continue;
-
- gen_aper = registered_fb[i]->apertures;
- device = registered_fb[i]->device;
- if (fb_do_apertures_overlap(gen_aper, a) ||
- (primary && gen_aper && gen_aper->count &&
- gen_aper->ranges[0].base == VGA_FB_PHYS_BASE)) {
-
- printk(KERN_INFO "fb%d: switching to %s from %s\n",
- i, name, registered_fb[i]->fix.id);
-
- /*
- * If we kick-out a firmware driver, we also want to remove
- * the underlying platform device, such as simple-framebuffer,
- * VESA, EFI, etc. A native driver will then be able to
- * allocate the memory range.
- *
- * If it's not a platform device, at least print a warning. A
- * fix would add code to remove the device from the system. For
- * framebuffers without any Linux device, print a warning as
- * well.
- */
- if (!device) {
- pr_warn("fb%d: no device set\n", i);
- do_unregister_framebuffer(registered_fb[i]);
- } else if (dev_is_platform(device)) {
- /*
- * Drop the lock because if the device is unregistered, its
- * driver will call to unregister_framebuffer(), that takes
- * this lock.
- */
- mutex_unlock(®istration_lock);
- platform_device_unregister(to_platform_device(device));
- mutex_lock(®istration_lock);
- } else {
- pr_warn("fb%d: cannot remove device\n", i);
- do_unregister_framebuffer(registered_fb[i]);
- }
- /*
- * Restart the removal loop now that the device has been
- * unregistered and its associated framebuffer gone.
- */
- goto restart_removal;
- }
- }
-}
-
static int do_register_framebuffer(struct fb_info *fb_info)
{
int i;
@@ -1618,10 +1522,6 @@ static int do_register_framebuffer(struct fb_info *fb_info)
if (fb_check_foreignness(fb_info))
return -ENOSYS;
- do_remove_conflicting_framebuffers(fb_info->apertures,
- fb_info->fix.id,
- fb_is_primary_device(fb_info));
-
if (num_registered_fb == FB_MAX)
return -ENXIO;
@@ -1766,42 +1666,6 @@ static int fb_aperture_acquire_for_platform_device(struct fb_info *fb_info)
return ret;
}
-/**
- * remove_conflicting_framebuffers - remove firmware-configured framebuffers
- * @a: memory range, users of which are to be removed
- * @name: requesting driver name
- * @primary: also kick vga16fb if present
- *
- * This function removes framebuffer devices (initialized by firmware/bootloader)
- * which use memory range described by @a. If @a is NULL all such devices are
- * removed.
- */
-int remove_conflicting_framebuffers(struct apertures_struct *a,
- const char *name, bool primary)
-{
- bool do_free = false;
-
- if (!a) {
- a = alloc_apertures(1);
- if (!a)
- return -ENOMEM;
-
- a->ranges[0].base = 0;
- a->ranges[0].size = ~0;
- do_free = true;
- }
-
- mutex_lock(®istration_lock);
- do_remove_conflicting_framebuffers(a, name, primary);
- mutex_unlock(®istration_lock);
-
- if (do_free)
- kfree(a);
-
- return 0;
-}
-EXPORT_SYMBOL(remove_conflicting_framebuffers);
-
/**
* register_framebuffer - registers a frame buffer device
* @fb_info: frame buffer info structure
diff --git a/include/linux/fb.h b/include/linux/fb.h
index b91c77016560..453c3b2b6b8e 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -615,8 +615,6 @@ extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
/* drivers/video/fbmem.c */
extern int register_framebuffer(struct fb_info *fb_info);
extern void unregister_framebuffer(struct fb_info *fb_info);
-extern int remove_conflicting_framebuffers(struct apertures_struct *a,
- const char *name, bool primary);
extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
extern int fb_show_logo(struct fb_info *fb_info, int rotate);
extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
--
2.36.1
^ permalink raw reply related [flat|nested] 21+ messages in thread
* Re: [PATCH v2 05/11] fbdev: Convert drivers to aperture helpers
2022-07-18 7:23 ` [PATCH v2 05/11] fbdev: Convert drivers to aperture helpers Thomas Zimmermann
@ 2022-07-18 9:57 ` kernel test robot
0 siblings, 0 replies; 21+ messages in thread
From: kernel test robot @ 2022-07-18 9:57 UTC (permalink / raw)
To: Thomas Zimmermann, javierm, deller, daniel, sam, maxime
Cc: linux-fbdev, llvm, kbuild-all, linux-staging, dri-devel,
Thomas Zimmermann
Hi Thomas,
I love your patch! Perhaps something to improve:
[auto build test WARNING on ebea934e2651857c9b56cc80bf99460ee18a3592]
url: https://github.com/intel-lab-lkp/linux/commits/Thomas-Zimmermann/fbdev-Maintain-device-ownership-with-aperture-helpers/20220718-152559
base: ebea934e2651857c9b56cc80bf99460ee18a3592
config: x86_64-randconfig-a003 (https://download.01.org/0day-ci/archive/20220718/202207181701.mB5xBuhX-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d74b88c69dc2644bd0dc5d64e2d7413a0d4040e5)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/64ab1ffe4e3accdef429db81ec645a1cbad540df
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Thomas-Zimmermann/fbdev-Maintain-device-ownership-with-aperture-helpers/20220718-152559
git checkout 64ab1ffe4e3accdef429db81ec645a1cbad540df
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/video/fbdev/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/video/fbdev/hyperv_fb.c:1080:26: warning: expression which evaluates to zero treated as a null pointer constant of type 'const char *' [-Wnon-literal-null-conversion]
KBUILD_MODNAME, false);
^~~~~
1 warning generated.
vim +1080 drivers/video/fbdev/hyperv_fb.c
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 987
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 988
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 989 /* Get framebuffer memory from Hyper-V video pci space */
3546448338e76a drivers/video/fbdev/hyperv_fb.c Jake Oshins 2015-08-05 990 static int hvfb_getmem(struct hv_device *hdev, struct fb_info *info)
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 991 {
9069fd54960304 drivers/video/hyperv_fb.c Gerd Hoffmann 2014-02-26 992 struct hvfb_par *par = info->par;
9069fd54960304 drivers/video/hyperv_fb.c Gerd Hoffmann 2014-02-26 993 struct pci_dev *pdev = NULL;
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 994 void __iomem *fb_virt;
9069fd54960304 drivers/video/hyperv_fb.c Gerd Hoffmann 2014-02-26 995 int gen2vm = efi_enabled(EFI_BOOT);
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 996 phys_addr_t paddr;
9069fd54960304 drivers/video/hyperv_fb.c Gerd Hoffmann 2014-02-26 997 int ret;
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 998
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 999 info->apertures = alloc_apertures(1);
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1000 if (!info->apertures)
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1001 return -ENOMEM;
d21987d709e807 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-09-18 1002
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1003 if (!gen2vm) {
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1004 pdev = pci_get_device(PCI_VENDOR_ID_MICROSOFT,
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1005 PCI_DEVICE_ID_HYPERV_VIDEO, NULL);
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1006 if (!pdev) {
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1007 pr_err("Unable to find PCI Hyper-V video\n");
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1008 return -ENODEV;
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1009 }
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1010
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1011 info->apertures->ranges[0].base = pci_resource_start(pdev, 0);
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1012 info->apertures->ranges[0].size = pci_resource_len(pdev, 0);
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1013
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1014 /*
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1015 * For Gen 1 VM, we can directly use the contiguous memory
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1016 * from VM. If we succeed, deferred IO happens directly
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1017 * on this allocated framebuffer memory, avoiding extra
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1018 * memory copy.
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1019 */
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1020 paddr = hvfb_get_phymem(hdev, screen_fb_size);
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1021 if (paddr != (phys_addr_t) -1) {
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1022 par->mmio_pp = paddr;
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1023 par->mmio_vp = par->dio_vp = __va(paddr);
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1024
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1025 info->fix.smem_start = paddr;
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1026 info->fix.smem_len = screen_fb_size;
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1027 info->screen_base = par->mmio_vp;
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1028 info->screen_size = screen_fb_size;
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1029
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1030 par->need_docopy = false;
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1031 goto getmem_done;
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1032 }
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1033 pr_info("Unable to allocate enough contiguous physical memory on Gen 1 VM. Using MMIO instead.\n");
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1034 } else {
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1035 info->apertures->ranges[0].base = screen_info.lfb_base;
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1036 info->apertures->ranges[0].size = screen_info.lfb_size;
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1037 }
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1038
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1039 /*
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1040 * Cannot use the contiguous physical memory.
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1041 * Allocate mmio space for framebuffer.
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1042 */
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1043 dio_fb_size =
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1044 screen_width * screen_height * screen_depth / 8;
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1045
c4b4d7047f16a8 drivers/video/fbdev/hyperv_fb.c Saurabh Sengar 2022-04-27 1046 ret = vmbus_allocate_mmio(&par->mem, hdev, 0, -1,
3546448338e76a drivers/video/fbdev/hyperv_fb.c Jake Oshins 2015-08-05 1047 screen_fb_size, 0x100000, true);
9069fd54960304 drivers/video/hyperv_fb.c Gerd Hoffmann 2014-02-26 1048 if (ret != 0) {
3546448338e76a drivers/video/fbdev/hyperv_fb.c Jake Oshins 2015-08-05 1049 pr_err("Unable to allocate framebuffer memory\n");
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1050 goto err1;
9069fd54960304 drivers/video/hyperv_fb.c Gerd Hoffmann 2014-02-26 1051 }
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1052
5f1251a48c17b5 drivers/video/fbdev/hyperv_fb.c Dexuan Cui 2020-11-17 1053 /*
5f1251a48c17b5 drivers/video/fbdev/hyperv_fb.c Dexuan Cui 2020-11-17 1054 * Map the VRAM cacheable for performance. This is also required for
5f1251a48c17b5 drivers/video/fbdev/hyperv_fb.c Dexuan Cui 2020-11-17 1055 * VM Connect to display properly for ARM64 Linux VM, as the host also
5f1251a48c17b5 drivers/video/fbdev/hyperv_fb.c Dexuan Cui 2020-11-17 1056 * maps the VRAM cacheable.
5f1251a48c17b5 drivers/video/fbdev/hyperv_fb.c Dexuan Cui 2020-11-17 1057 */
5f1251a48c17b5 drivers/video/fbdev/hyperv_fb.c Dexuan Cui 2020-11-17 1058 fb_virt = ioremap_cache(par->mem->start, screen_fb_size);
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1059 if (!fb_virt)
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1060 goto err2;
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1061
d21987d709e807 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-09-18 1062 /* Allocate memory for deferred IO */
d21987d709e807 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-09-18 1063 par->dio_vp = vzalloc(round_up(dio_fb_size, PAGE_SIZE));
d21987d709e807 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-09-18 1064 if (par->dio_vp == NULL)
d21987d709e807 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-09-18 1065 goto err3;
d21987d709e807 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-09-18 1066
d21987d709e807 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-09-18 1067 /* Physical address of FB device */
d21987d709e807 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-09-18 1068 par->mmio_pp = par->mem->start;
d21987d709e807 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-09-18 1069 /* Virtual address of FB device */
d21987d709e807 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-09-18 1070 par->mmio_vp = (unsigned char *) fb_virt;
d21987d709e807 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-09-18 1071
3546448338e76a drivers/video/fbdev/hyperv_fb.c Jake Oshins 2015-08-05 1072 info->fix.smem_start = par->mem->start;
d21987d709e807 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-09-18 1073 info->fix.smem_len = dio_fb_size;
d21987d709e807 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-09-18 1074 info->screen_base = par->dio_vp;
d21987d709e807 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-09-18 1075 info->screen_size = dio_fb_size;
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1076
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 1077 getmem_done:
64ab1ffe4e3acc drivers/video/fbdev/hyperv_fb.c Thomas Zimmermann 2022-07-18 1078 aperture_remove_conflicting_devices(info->apertures->ranges[0].base,
64ab1ffe4e3acc drivers/video/fbdev/hyperv_fb.c Thomas Zimmermann 2022-07-18 1079 info->apertures->ranges[0].size,
3a6fb6c4255c38 drivers/video/fbdev/hyperv_fb.c Wei Hu 2019-12-09 @1080 KBUILD_MODNAME, false);
3cb73bc3fa2a3c drivers/video/fbdev/hyperv_fb.c Kairui Song 2020-10-14 1081
3cb73bc3fa2a3c drivers/video/fbdev/hyperv_fb.c Kairui Song 2020-10-14 1082 if (gen2vm) {
3cb73bc3fa2a3c drivers/video/fbdev/hyperv_fb.c Kairui Song 2020-10-14 1083 /* framebuffer is reallocated, clear screen_info to avoid misuse from kexec */
3cb73bc3fa2a3c drivers/video/fbdev/hyperv_fb.c Kairui Song 2020-10-14 1084 screen_info.lfb_size = 0;
3cb73bc3fa2a3c drivers/video/fbdev/hyperv_fb.c Kairui Song 2020-10-14 1085 screen_info.lfb_base = 0;
3cb73bc3fa2a3c drivers/video/fbdev/hyperv_fb.c Kairui Song 2020-10-14 1086 screen_info.orig_video_isVGA = 0;
3cb73bc3fa2a3c drivers/video/fbdev/hyperv_fb.c Kairui Song 2020-10-14 1087 } else {
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1088 pci_dev_put(pdev);
3cb73bc3fa2a3c drivers/video/fbdev/hyperv_fb.c Kairui Song 2020-10-14 1089 }
9069fd54960304 drivers/video/hyperv_fb.c Gerd Hoffmann 2014-02-26 1090
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1091 return 0;
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1092
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1093 err3:
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1094 iounmap(fb_virt);
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1095 err2:
696ca5e82c057a drivers/video/fbdev/hyperv_fb.c Jake Oshins 2016-04-05 1096 vmbus_free_mmio(par->mem->start, screen_fb_size);
3546448338e76a drivers/video/fbdev/hyperv_fb.c Jake Oshins 2015-08-05 1097 par->mem = NULL;
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1098 err1:
9069fd54960304 drivers/video/hyperv_fb.c Gerd Hoffmann 2014-02-26 1099 if (!gen2vm)
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1100 pci_dev_put(pdev);
9069fd54960304 drivers/video/hyperv_fb.c Gerd Hoffmann 2014-02-26 1101
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1102 return -ENOMEM;
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1103 }
68a2d20b79b105 drivers/video/hyperv_fb.c Haiyang Zhang 2013-04-29 1104
--
0-DAY CI Kernel Test Service
https://01.org/lkp
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH v2 06/11] fbdev: Remove conflicting devices on PCI bus
2022-07-18 7:23 ` [PATCH v2 06/11] fbdev: Remove conflicting devices on PCI bus Thomas Zimmermann
@ 2022-07-21 14:17 ` Geert Uytterhoeven
0 siblings, 0 replies; 21+ messages in thread
From: Geert Uytterhoeven @ 2022-07-21 14:17 UTC (permalink / raw)
To: Thomas Zimmermann
Cc: Linux Fbdev development list, Helge Deller, linux-staging,
Javier Martinez Canillas, DRI Development, Maxime Ripard,
Sam Ravnborg
Hi Thomas,
On Mon, Jul 18, 2022 at 9:24 AM Thomas Zimmermann <tzimmermann@suse.de> wrote:
> Remove firmware devices on the PCI bus, by calling
> aperture_remove_conflicting_pci_devices() in the probe function of
> each related fbdev driver. iSo far, most of these drivers did not
> remove conflicting VESA or EFI devices, or outride failed for
> resource conflicts (i.e., matroxfb.) This must have been broken
> for quite some time.
>
> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Thanks for your patch!
> --- a/drivers/video/fbdev/tgafb.c
> +++ b/drivers/video/fbdev/tgafb.c
> @@ -12,6 +12,7 @@
> * more details.
> */
>
> +#include <linux/aperture.h>
> #include <linux/bitrev.h>
> #include <linux/compiler.h>
> #include <linux/delay.h>
> @@ -106,6 +107,12 @@ static struct pci_driver tgafb_pci_driver = {
> static int tgafb_pci_register(struct pci_dev *pdev,
> const struct pci_device_id *ent)
> {
> + int ret;
> +
> + ret = aperture_remove_conflicting_pci_devices(pdev, "tgafb");
> + if (ret)
> + return ret;
> +
> return tgafb_register(&pdev->dev);
> }
I am wondering which driver could possibly conflict with TGA?
Probably there are a few other drivers in the same category (tdfxfb?).
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH v2 07/11] video/aperture: Disable and unregister sysfb devices via aperture helpers
2022-07-18 7:23 ` [PATCH v2 07/11] video/aperture: Disable and unregister sysfb devices via aperture helpers Thomas Zimmermann
@ 2023-03-20 1:47 ` Samuel Čavoj
2023-03-20 9:46 ` Thomas Zimmermann
0 siblings, 1 reply; 21+ messages in thread
From: Samuel Čavoj @ 2023-03-20 1:47 UTC (permalink / raw)
To: Thomas Zimmermann
Cc: linux-fbdev, Thomas Zimmermann, Daniel Vetter, deller,
linux-staging, javierm, dri-devel, Changcheng Deng, maxime,
Zhen Lei, Alex Deucher, sam
Hi,
> diff --git a/drivers/video/aperture.c b/drivers/video/aperture.c
> index f42a0d8bc211..101e13c2cf41 100644
> --- a/drivers/video/aperture.c
> +++ b/drivers/video/aperture.c
> @@ -8,6 +8,7 @@
> #include <linux/pci.h>
> #include <linux/platform_device.h>
> #include <linux/slab.h>
> +#include <linux/sysfb.h>
> #include <linux/types.h>
> #include <linux/vgaarb.h>
>
> @@ -286,7 +287,20 @@ int
> aperture_remove_conflicting_devices(resource_size_t base,
> resource_size_t si
> #if IS_REACHABLE(CONFIG_FB)
> struct apertures_struct *a;
> int ret;
> +#endif
> +
> + /*
> + * If a driver asked to unregister a platform device registered by
> + * sysfb, then can be assumed that this is a driver for a display
> + * that is set up by the system firmware and has a generic driver.
> + *
> + * Drivers for devices that don't have a generic driver will never
> + * ask for this, so let's assume that a real driver for the display
> + * was already probed and prevent sysfb to register devices later.
> + */
> + sysfb_disable();
This call to sysfb_disable() has been causing trouble with regard to
VFIO. VFIO has been calling aperture_remove_conflicting_pci_devices to
get rid of any console drivers (d173780620792c) using the device in
question, but now even unrelated drivers are getting killed. Example
situation:
Machine has two GPUs and uses efifb for the console. Efifb registers
with the aperture system the efi framebuffer region, which is covered
by a BAR resource of GPU 1. VFIO grabs GPU 2 and calls
aperture_remove_conflicting_pci_devices(GPU 2). GPU 2 has no overlap
with the efifb on GPU1 but the efifb is killed regardless due to
the unconditional call to sysfb_disable(). The console switches
to dummy and locks up from the user perspective.
This seems unnecessary, as the device is unrelated.
I do not quite understand the comment justifying the call.
Some discussions with workarounds:
https://old.reddit.com/r/VFIO/comments/11qei4t/framebuffer_doesnt_work_anymore_after_passthrough/
https://bbs.archlinux.org/viewtopic.php?id=280512
Thanks,
Samuel
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH v2 07/11] video/aperture: Disable and unregister sysfb devices via aperture helpers
2023-03-20 1:47 ` Samuel Čavoj
@ 2023-03-20 9:46 ` Thomas Zimmermann
2023-03-20 10:13 ` Javier Martinez Canillas
0 siblings, 1 reply; 21+ messages in thread
From: Thomas Zimmermann @ 2023-03-20 9:46 UTC (permalink / raw)
To: Samuel Čavoj
Cc: linux-fbdev, Daniel Vetter, deller, linux-staging, javierm,
dri-devel, Changcheng Deng, maxime, Zhen Lei, Alex Deucher, sam
[-- Attachment #1.1: Type: text/plain, Size: 2613 bytes --]
Hi
Am 20.03.23 um 02:47 schrieb Samuel Čavoj:
> Hi,
>
>> diff --git a/drivers/video/aperture.c b/drivers/video/aperture.c
>> index f42a0d8bc211..101e13c2cf41 100644
>> --- a/drivers/video/aperture.c
>> +++ b/drivers/video/aperture.c
>> @@ -8,6 +8,7 @@
>> #include <linux/pci.h>
>> #include <linux/platform_device.h>
>> #include <linux/slab.h>
>> +#include <linux/sysfb.h>
>> #include <linux/types.h>
>> #include <linux/vgaarb.h>
>>
>> @@ -286,7 +287,20 @@ int
>> aperture_remove_conflicting_devices(resource_size_t base,
>> resource_size_t si
>> #if IS_REACHABLE(CONFIG_FB)
>> struct apertures_struct *a;
>> int ret;
>> +#endif
>> +
>> + /*
>> + * If a driver asked to unregister a platform device registered by
>> + * sysfb, then can be assumed that this is a driver for a display
>> + * that is set up by the system firmware and has a generic driver.
>> + *
>> + * Drivers for devices that don't have a generic driver will never
>> + * ask for this, so let's assume that a real driver for the display
>> + * was already probed and prevent sysfb to register devices later.
>> + */
>> + sysfb_disable();
>
> This call to sysfb_disable() has been causing trouble with regard to
> VFIO. VFIO has been calling aperture_remove_conflicting_pci_devices to
> get rid of any console drivers (d173780620792c) using the device in
> question, but now even unrelated drivers are getting killed. Example
> situation:
Which drivers do you use?
Best regards
Thomas
>
> Machine has two GPUs and uses efifb for the console. Efifb registers
> with the aperture system the efi framebuffer region, which is covered
> by a BAR resource of GPU 1. VFIO grabs GPU 2 and calls
> aperture_remove_conflicting_pci_devices(GPU 2). GPU 2 has no overlap
> with the efifb on GPU1 but the efifb is killed regardless due to
> the unconditional call to sysfb_disable(). The console switches
> to dummy and locks up from the user perspective.
> This seems unnecessary, as the device is unrelated.
>
> I do not quite understand the comment justifying the call.
>
> Some discussions with workarounds:
> https://old.reddit.com/r/VFIO/comments/11qei4t/framebuffer_doesnt_work_anymore_after_passthrough/
> https://bbs.archlinux.org/viewtopic.php?id=280512
>
>
> Thanks,
> Samuel
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev
[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 840 bytes --]
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH v2 07/11] video/aperture: Disable and unregister sysfb devices via aperture helpers
2023-03-20 9:46 ` Thomas Zimmermann
@ 2023-03-20 10:13 ` Javier Martinez Canillas
2023-03-20 11:08 ` Samuel Čavoj
0 siblings, 1 reply; 21+ messages in thread
From: Javier Martinez Canillas @ 2023-03-20 10:13 UTC (permalink / raw)
To: Thomas Zimmermann, Samuel Čavoj
Cc: linux-fbdev, Daniel Vetter, deller, linux-staging,
Changcheng Deng, dri-devel, maxime, Zhen Lei, Alex Deucher, sam
Thomas Zimmermann <tzimmermann@suse.de> writes:
[...]
>>> + /*
>>> + * If a driver asked to unregister a platform device registered by
>>> + * sysfb, then can be assumed that this is a driver for a display
>>> + * that is set up by the system firmware and has a generic driver.
>>> + *
>>> + * Drivers for devices that don't have a generic driver will never
>>> + * ask for this, so let's assume that a real driver for the display
>>> + * was already probed and prevent sysfb to register devices later.
>>> + */
>>> + sysfb_disable();
>>
>> This call to sysfb_disable() has been causing trouble with regard to
>> VFIO. VFIO has been calling aperture_remove_conflicting_pci_devices to
>> get rid of any console drivers (d173780620792c) using the device in
>> question, but now even unrelated drivers are getting killed. Example
>> situation:
>
> Which drivers do you use?
>
Also, what kernel version?
[...]
>>
>> Machine has two GPUs and uses efifb for the console. Efifb registers
>> with the aperture system the efi framebuffer region, which is covered
>> by a BAR resource of GPU 1. VFIO grabs GPU 2 and calls
>> aperture_remove_conflicting_pci_devices(GPU 2). GPU 2 has no overlap
>> with the efifb on GPU1 but the efifb is killed regardless due to
>> the unconditional call to sysfb_disable(). The console switches
>> to dummy and locks up from the user perspective.
>> This seems unnecessary, as the device is unrelated.
>>
That's a bug indeed but I thought that was already fixed...
--
Best regards,
Javier Martinez Canillas
Core Platforms
Red Hat
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH v2 07/11] video/aperture: Disable and unregister sysfb devices via aperture helpers
2023-03-20 10:13 ` Javier Martinez Canillas
@ 2023-03-20 11:08 ` Samuel Čavoj
2023-03-20 12:12 ` Javier Martinez Canillas
0 siblings, 1 reply; 21+ messages in thread
From: Samuel Čavoj @ 2023-03-20 11:08 UTC (permalink / raw)
To: Javier Martinez Canillas
Cc: linux-fbdev, Thomas Zimmermann, Daniel Vetter, deller,
linux-staging, Changcheng Deng, dri-devel, maxime, Zhen Lei,
Alex Deucher, sam
On 2023-03-20 11:13, Javier Martinez Canillas wrote:
> Thomas Zimmermann <tzimmermann@suse.de> writes:
>
> [...]
>
>>>> + /*
>>>> + * If a driver asked to unregister a platform device registered
>>>> by
>>>> + * sysfb, then can be assumed that this is a driver for a
>>>> display
>>>> + * that is set up by the system firmware and has a generic
>>>> driver.
>>>> + *
>>>> + * Drivers for devices that don't have a generic driver will
>>>> never
>>>> + * ask for this, so let's assume that a real driver for the
>>>> display
>>>> + * was already probed and prevent sysfb to register devices
>>>> later.
>>>> + */
>>>> + sysfb_disable();
>>>
>>> This call to sysfb_disable() has been causing trouble with regard to
>>> VFIO. VFIO has been calling aperture_remove_conflicting_pci_devices
>>> to
>>> get rid of any console drivers (d173780620792c) using the device in
>>> question, but now even unrelated drivers are getting killed. Example
>>> situation:
>>
>> Which drivers do you use?
This happens with either no drivers loaded or the proprietary nvidia
driver. Nouveau is fine as it doesn't rely on efifb but brings its own.
>>
>
> Also, what kernel version?
I tried with 6.2.6, can build mainline and test there as well.
Thanks for help!
>
> [...]
>
>>>
>>> Machine has two GPUs and uses efifb for the console. Efifb registers
>>> with the aperture system the efi framebuffer region, which is covered
>>> by a BAR resource of GPU 1. VFIO grabs GPU 2 and calls
>>> aperture_remove_conflicting_pci_devices(GPU 2). GPU 2 has no overlap
>>> with the efifb on GPU1 but the efifb is killed regardless due to
>>> the unconditional call to sysfb_disable(). The console switches
>>> to dummy and locks up from the user perspective.
>>> This seems unnecessary, as the device is unrelated.
>>>
>
> That's a bug indeed but I thought that was already fixed...
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH v2 07/11] video/aperture: Disable and unregister sysfb devices via aperture helpers
2023-03-20 11:08 ` Samuel Čavoj
@ 2023-03-20 12:12 ` Javier Martinez Canillas
2023-03-28 15:19 ` Samuel Čavoj
0 siblings, 1 reply; 21+ messages in thread
From: Javier Martinez Canillas @ 2023-03-20 12:12 UTC (permalink / raw)
To: Samuel Čavoj
Cc: linux-fbdev, Thomas Zimmermann, Daniel Vetter, deller,
linux-staging, Changcheng Deng, dri-devel, maxime, Zhen Lei,
Alex Deucher, sam
Samuel Čavoj <samuel@cavoj.net> writes:
[...]
>>>> This call to sysfb_disable() has been causing trouble with regard to
>>>> VFIO. VFIO has been calling aperture_remove_conflicting_pci_devices
>>>> to
>>>> get rid of any console drivers (d173780620792c) using the device in
>>>> question, but now even unrelated drivers are getting killed. Example
>>>> situation:
>>>
>>> Which drivers do you use?
>
> This happens with either no drivers loaded or the proprietary nvidia
> driver. Nouveau is fine as it doesn't rely on efifb but brings its own.
>
Which is what all DRM drivers should do. If they want to make sure that a
fbdev will be present after the DRM driver probes, then should register an
emulated fbdev.
There was an attempt to workaround that in [0], in particular patch [1]
but that effort was not continued since the only DRM driver that would be
affected is the Nvidia proprietary driver that relies on efifb/simpledrm
to have a VT.
[0]: https://patchwork.kernel.org/project/dri-devel/list/?series=711019&archive=both
[1]: https://patchwork.kernel.org/project/dri-devel/patch/20230111154112.90575-11-daniel.vetter@ffwll.ch/
--
Best regards,
Javier Martinez Canillas
Core Platforms
Red Hat
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH v2 07/11] video/aperture: Disable and unregister sysfb devices via aperture helpers
2023-03-20 12:12 ` Javier Martinez Canillas
@ 2023-03-28 15:19 ` Samuel Čavoj
2023-04-04 11:36 ` Javier Martinez Canillas
0 siblings, 1 reply; 21+ messages in thread
From: Samuel Čavoj @ 2023-03-28 15:19 UTC (permalink / raw)
To: Javier Martinez Canillas
Cc: linux-fbdev, Thomas Zimmermann, Daniel Vetter, deller,
linux-staging, Changcheng Deng, dri-devel, maxime, Zhen Lei,
Alex Deucher, sam
On 2023-03-20 13:12, Javier Martinez Canillas wrote:
> Samuel Čavoj <samuel@cavoj.net> writes:
>
> [...]
>
>>>>> This call to sysfb_disable() has been causing trouble with regard
>>>>> to
>>>>> VFIO. VFIO has been calling aperture_remove_conflicting_pci_devices
>>>>> to
>>>>> get rid of any console drivers (d173780620792c) using the device in
>>>>> question, but now even unrelated drivers are getting killed.
>>>>> Example
>>>>> situation:
>>>>
>>>> Which drivers do you use?
>>
>> This happens with either no drivers loaded or the proprietary nvidia
>> driver. Nouveau is fine as it doesn't rely on efifb but brings its
>> own.
>>
>
> Which is what all DRM drivers should do. If they want to make sure that
> a
> fbdev will be present after the DRM driver probes, then should register
> an
> emulated fbdev.
I don't see how this is specific to Nvidia or DRM drivers.
The efifb is killed if vfio-pci (or another driver which uses the
aperture system to remove conflicting drivers) is bound to ANY pci
device, regardless of whether it's nvidia's fault for not implementing
a framebuffer. Fair enough, I agree that they should, but
I for one expect my efifb to not die at a random time
when a random unrelated driver does a random thing with another
unrelated GPU.
Or is the efifb considered a stop-gap solution the only purpose of
which is early boot--before another GPU driver is loaded?
>
> There was an attempt to workaround that in [0], in particular patch [1]
> but that effort was not continued since the only DRM driver that would
> be
> affected is the Nvidia proprietary driver that relies on
> efifb/simpledrm
> to have a VT.
>
> [0]:
> https://patchwork.kernel.org/project/dri-devel/list/?series=711019&archive=both
> [1]:
> https://patchwork.kernel.org/project/dri-devel/patch/20230111154112.90575-11-daniel.vetter@ffwll.ch/
^ permalink raw reply [flat|nested] 21+ messages in thread
* Re: [PATCH v2 07/11] video/aperture: Disable and unregister sysfb devices via aperture helpers
2023-03-28 15:19 ` Samuel Čavoj
@ 2023-04-04 11:36 ` Javier Martinez Canillas
0 siblings, 0 replies; 21+ messages in thread
From: Javier Martinez Canillas @ 2023-04-04 11:36 UTC (permalink / raw)
To: Samuel Čavoj
Cc: linux-fbdev, Thomas Zimmermann, Daniel Vetter, deller,
linux-staging, Changcheng Deng, dri-devel, maxime, Zhen Lei,
Alex Deucher, sam
Samuel Čavoj <samuel@cavoj.net> writes:
Hello Samuel,
> On 2023-03-20 13:12, Javier Martinez Canillas wrote:
>> Samuel Čavoj <samuel@cavoj.net> writes:
>>
>> [...]
>>
>>>>>> This call to sysfb_disable() has been causing trouble with regard
>>>>>> to
>>>>>> VFIO. VFIO has been calling aperture_remove_conflicting_pci_devices
>>>>>> to
>>>>>> get rid of any console drivers (d173780620792c) using the device in
>>>>>> question, but now even unrelated drivers are getting killed.
>>>>>> Example
>>>>>> situation:
>>>>>
>>>>> Which drivers do you use?
>>>
>>> This happens with either no drivers loaded or the proprietary nvidia
>>> driver. Nouveau is fine as it doesn't rely on efifb but brings its
>>> own.
>>>
>>
>> Which is what all DRM drivers should do. If they want to make sure that
>> a
>> fbdev will be present after the DRM driver probes, then should register
>> an
>> emulated fbdev.
>
> I don't see how this is specific to Nvidia or DRM drivers.
>
Not specific to Nvidia per se but as mentioned it only affected Nvidia due
that driver relying on a different graphics driver to get a VT console.
> The efifb is killed if vfio-pci (or another driver which uses the
> aperture system to remove conflicting drivers) is bound to ANY pci
> device, regardless of whether it's nvidia's fault for not implementing
> a framebuffer. Fair enough, I agree that they should, but
> I for one expect my efifb to not die at a random time
> when a random unrelated driver does a random thing with another
> unrelated GPU.
>
There was a patch series to address that:
https://patchwork.kernel.org/project/dri-devel/list/?series=711019&archive=both
In particular, this patch:
https://patchwork.kernel.org/project/dri-devel/patch/20230111154112.90575-11-daniel.vetter@ffwll.ch/
> Or is the efifb considered a stop-gap solution the only purpose of
> which is early boot--before another GPU driver is loaded?
>
All the firmware-provided graphics drivers are really a best effort IMO,
that is something only to be used to get early video output and any in the
case of "nomodeset" (i.e: some distros have a "Safe graphics mode" boot
entry that prevents DRM drivers to be loaded but used for troubleshooting.
But as soon as a real DRM driver is probed (either in the host or a guest
when the device is passed-through), I believe that is very likely that it
won't work anymore. In other words, is not a robust way to get output and
is just a best effort.
--
Best regards,
Javier Martinez Canillas
Core Platforms
Red Hat
^ permalink raw reply [flat|nested] 21+ messages in thread
end of thread, other threads:[~2023-04-04 11:36 UTC | newest]
Thread overview: 21+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-07-18 7:23 [PATCH v2 00/11] fbdev: Maintain device ownership with aperture helpers Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 01/11] fbdev: Remove trailing whitespaces Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 02/11] fbdev/vga16fb: Create EGA/VGA devices in sysfb code Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 03/11] fbdev/vga16fb: Auto-generate module init/exit code Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 04/11] fbdev/core: Remove remove_conflicting_pci_framebuffers() Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 05/11] fbdev: Convert drivers to aperture helpers Thomas Zimmermann
2022-07-18 9:57 ` kernel test robot
2022-07-18 7:23 ` [PATCH v2 06/11] fbdev: Remove conflicting devices on PCI bus Thomas Zimmermann
2022-07-21 14:17 ` Geert Uytterhoeven
2022-07-18 7:23 ` [PATCH v2 07/11] video/aperture: Disable and unregister sysfb devices via aperture helpers Thomas Zimmermann
2023-03-20 1:47 ` Samuel Čavoj
2023-03-20 9:46 ` Thomas Zimmermann
2023-03-20 10:13 ` Javier Martinez Canillas
2023-03-20 11:08 ` Samuel Čavoj
2023-03-20 12:12 ` Javier Martinez Canillas
2023-03-28 15:19 ` Samuel Čavoj
2023-04-04 11:36 ` Javier Martinez Canillas
2022-07-18 7:23 ` [PATCH v2 08/11] video: Provide constants for VGA I/O range Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 09/11] video/aperture: Remove conflicting VGA devices, if any Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 10/11] fbdev: Acquire framebuffer apertures for firmware devices Thomas Zimmermann
2022-07-18 7:23 ` [PATCH v2 11/11] fbdev: Remove conflict-handling code Thomas Zimmermann
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