diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/r100.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/r100.c | 37 |
1 files changed, 31 insertions, 6 deletions
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c index ab37717a5d39..e115583f84fb 100644 --- a/drivers/gpu/drm/radeon/r100.c +++ b/drivers/gpu/drm/radeon/r100.c @@ -1230,7 +1230,6 @@ int r100_cs_packet_parse_vline(struct radeon_cs_parser *p) header = radeon_get_ib_value(p, h_idx); crtc_id = radeon_get_ib_value(p, h_idx + 5); reg = CP_PACKET0_GET_REG(header); - mutex_lock(&p->rdev->ddev->mode_config.mutex); obj = drm_mode_object_find(p->rdev->ddev, crtc_id, DRM_MODE_OBJECT_CRTC); if (!obj) { DRM_ERROR("cannot find crtc %d\n", crtc_id); @@ -1264,7 +1263,6 @@ int r100_cs_packet_parse_vline(struct radeon_cs_parser *p) ib[h_idx + 3] |= RADEON_ENG_DISPLAY_SELECT_CRTC1; } out: - mutex_unlock(&p->rdev->ddev->mode_config.mutex); return r; } @@ -2354,6 +2352,7 @@ void r100_mc_init(struct radeon_device *rdev) if (rdev->flags & RADEON_IS_IGP) base = (RREG32(RADEON_NB_TOM) & 0xffff) << 16; radeon_vram_location(rdev, &rdev->mc, base); + rdev->mc.gtt_base_align = 0; if (!(rdev->flags & RADEON_IS_AGP)) radeon_gtt_location(rdev, &rdev->mc); radeon_update_bandwidth_info(rdev); @@ -2365,11 +2364,10 @@ void r100_mc_init(struct radeon_device *rdev) */ void r100_pll_errata_after_index(struct radeon_device *rdev) { - if (!(rdev->pll_errata & CHIP_ERRATA_PLL_DUMMYREADS)) { - return; + if (rdev->pll_errata & CHIP_ERRATA_PLL_DUMMYREADS) { + (void)RREG32(RADEON_CLOCK_CNTL_DATA); + (void)RREG32(RADEON_CRTC_GEN_CNTL); } - (void)RREG32(RADEON_CLOCK_CNTL_DATA); - (void)RREG32(RADEON_CRTC_GEN_CNTL); } static void r100_pll_errata_after_data(struct radeon_device *rdev) @@ -3810,6 +3808,31 @@ void r100_fini(struct radeon_device *rdev) rdev->bios = NULL; } +/* + * Due to how kexec works, it can leave the hw fully initialised when it + * boots the new kernel. However doing our init sequence with the CP and + * WB stuff setup causes GPU hangs on the RN50 at least. So at startup + * do some quick sanity checks and restore sane values to avoid this + * problem. + */ +void r100_restore_sanity(struct radeon_device *rdev) +{ + u32 tmp; + + tmp = RREG32(RADEON_CP_CSQ_CNTL); + if (tmp) { + WREG32(RADEON_CP_CSQ_CNTL, 0); + } + tmp = RREG32(RADEON_CP_RB_CNTL); + if (tmp) { + WREG32(RADEON_CP_RB_CNTL, 0); + } + tmp = RREG32(RADEON_SCRATCH_UMSK); + if (tmp) { + WREG32(RADEON_SCRATCH_UMSK, 0); + } +} + int r100_init(struct radeon_device *rdev) { int r; @@ -3822,6 +3845,8 @@ int r100_init(struct radeon_device *rdev) radeon_scratch_init(rdev); /* Initialize surface registers */ radeon_surface_init(rdev); + /* sanity check some register to avoid hangs like after kexec */ + r100_restore_sanity(rdev); /* TODO: disable VGA need to use VGA request */ /* BIOS*/ if (!radeon_get_bios(rdev)) { |