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| author | Alex Deucher <alexdeucher@gmail.com> | 2010-06-30 11:52:50 -0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-08-02 10:00:07 +1000 |
| commit | 351a52a2414d2b104269755c86b476863c248034 (patch) | |
| tree | 71e25c5cceab9235e5bca4a8d521f73b3adf3fa6 /drivers/gpu/drm/radeon/radeon.h | |
| parent | fe50ac78a6ec20db267b32e27a1d191128eaaa46 (diff) | |
| download | lwn-351a52a2414d2b104269755c86b476863c248034.tar.gz lwn-351a52a2414d2b104269755c86b476863c248034.zip | |
drm/radeon/kms: add ioport register access
This is required for the NB_MISC regs on rs780/rs880 which
means HDMI/DVI/DP ports using PCIEPHY won't work without
it. It might also help with s/r (asic init) issues on other
atombios cards.
Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=28774
and similar issues reported by Alberto Milone.
[airlied: Squash io fix patch]
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Tested-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon.h')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 03141755c2ea..966ba0751feb 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -1048,6 +1048,9 @@ struct radeon_device { uint32_t pcie_reg_mask; radeon_rreg_t pciep_rreg; radeon_wreg_t pciep_wreg; + /* io port */ + void __iomem *rio_mem; + resource_size_t rio_mem_size; struct radeon_clock clock; struct radeon_mc mc; struct radeon_gart gart; @@ -1130,6 +1133,26 @@ static inline void r100_mm_wreg(struct radeon_device *rdev, uint32_t reg, uint32 } } +static inline u32 r100_io_rreg(struct radeon_device *rdev, u32 reg) +{ + if (reg < rdev->rio_mem_size) + return ioread32(rdev->rio_mem + reg); + else { + iowrite32(reg, rdev->rio_mem + RADEON_MM_INDEX); + return ioread32(rdev->rio_mem + RADEON_MM_DATA); + } +} + +static inline void r100_io_wreg(struct radeon_device *rdev, u32 reg, u32 v) +{ + if (reg < rdev->rio_mem_size) + iowrite32(v, rdev->rio_mem + reg); + else { + iowrite32(reg, rdev->rio_mem + RADEON_MM_INDEX); + iowrite32(v, rdev->rio_mem + RADEON_MM_DATA); + } +} + /* * Cast helper */ @@ -1168,6 +1191,8 @@ static inline void r100_mm_wreg(struct radeon_device *rdev, uint32_t reg, uint32 WREG32_PLL(reg, tmp_); \ } while (0) #define DREG32_SYS(sqf, rdev, reg) seq_printf((sqf), #reg " : 0x%08X\n", r100_mm_rreg((rdev), (reg))) +#define RREG32_IO(reg) r100_io_rreg(rdev, (reg)) +#define WREG32_IO(reg, v) r100_io_wreg(rdev, (reg), (v)) /* * Indirect registers accessor |