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Merge tag 'drm-intel-fixes-2021-03-18' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

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drm/i915 fixes for v5.12-rc4:
- Workaround async flip + VT-d frame corruption on HSW/BDW
- Fix NMI watchdog crash due to uninitialized OA buffer use on gen12+

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87blbg8y5t.fsf@intel.com
This commit is contained in:
Dave Airlie 2021-03-19 10:33:32 +10:00
commit 0677170bcf
3 changed files with 42 additions and 10 deletions
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13
drivers/gpu/drm/i915/i915_perf.c
View File

@ -603,7 +603,6 @@ static int append_oa_sample(struct i915_perf_stream *stream,
{
int report_size = stream->oa_buffer.format_size;
struct drm_i915_perf_record_header header;
u32 sample_flags = stream->sample_flags;
header.type = DRM_I915_PERF_RECORD_SAMPLE;
header.pad = 0;
@ -617,10 +616,8 @@ static int append_oa_sample(struct i915_perf_stream *stream,
return -EFAULT;
buf += sizeof(header);
if (sample_flags & SAMPLE_OA_REPORT) {
if (copy_to_user(buf, report, report_size))
return -EFAULT;
}
if (copy_to_user(buf, report, report_size))
return -EFAULT;
(*offset) += header.size;
@ -2682,7 +2679,7 @@ static void i915_oa_stream_enable(struct i915_perf_stream *stream)
stream->perf->ops.oa_enable(stream);
if (stream->periodic)
if (stream->sample_flags & SAMPLE_OA_REPORT)
hrtimer_start(&stream->poll_check_timer,
ns_to_ktime(stream->poll_oa_period),
HRTIMER_MODE_REL_PINNED);
@ -2745,7 +2742,7 @@ static void i915_oa_stream_disable(struct i915_perf_stream *stream)
{
stream->perf->ops.oa_disable(stream);
if (stream->periodic)
if (stream->sample_flags & SAMPLE_OA_REPORT)
hrtimer_cancel(&stream->poll_check_timer);
}
@ -3028,7 +3025,7 @@ static ssize_t i915_perf_read(struct file *file,
* disabled stream as an error. In particular it might otherwise lead
* to a deadlock for blocking file descriptors...
*/
if (!stream->enabled)
if (!stream->enabled || !(stream->sample_flags & SAMPLE_OA_REPORT))
return -EIO;
if (!(file->f_flags & O_NONBLOCK)) {

23
drivers/gpu/drm/i915/i915_reg.h
View File

@ -3316,7 +3316,18 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
#define ILK_DISPLAY_CHICKEN1 _MMIO(0x42000)
#define ILK_FBCQ_DIS (1 << 22)
#define ILK_PABSTRETCH_DIS (1 << 21)
#define ILK_PABSTRETCH_DIS REG_BIT(21)
#define ILK_SABSTRETCH_DIS REG_BIT(20)
#define IVB_PRI_STRETCH_MAX_MASK REG_GENMASK(21, 20)
#define IVB_PRI_STRETCH_MAX_X8 REG_FIELD_PREP(IVB_PRI_STRETCH_MAX_MASK, 0)
#define IVB_PRI_STRETCH_MAX_X4 REG_FIELD_PREP(IVB_PRI_STRETCH_MAX_MASK, 1)
#define IVB_PRI_STRETCH_MAX_X2 REG_FIELD_PREP(IVB_PRI_STRETCH_MAX_MASK, 2)
#define IVB_PRI_STRETCH_MAX_X1 REG_FIELD_PREP(IVB_PRI_STRETCH_MAX_MASK, 3)
#define IVB_SPR_STRETCH_MAX_MASK REG_GENMASK(19, 18)
#define IVB_SPR_STRETCH_MAX_X8 REG_FIELD_PREP(IVB_SPR_STRETCH_MAX_MASK, 0)
#define IVB_SPR_STRETCH_MAX_X4 REG_FIELD_PREP(IVB_SPR_STRETCH_MAX_MASK, 1)
#define IVB_SPR_STRETCH_MAX_X2 REG_FIELD_PREP(IVB_SPR_STRETCH_MAX_MASK, 2)
#define IVB_SPR_STRETCH_MAX_X1 REG_FIELD_PREP(IVB_SPR_STRETCH_MAX_MASK, 3)
/*
@ -8039,6 +8050,16 @@ enum {
#define _CHICKEN_PIPESL_1_A 0x420b0
#define _CHICKEN_PIPESL_1_B 0x420b4
#define HSW_PRI_STRETCH_MAX_MASK REG_GENMASK(28, 27)
#define HSW_PRI_STRETCH_MAX_X8 REG_FIELD_PREP(HSW_PRI_STRETCH_MAX_MASK, 0)
#define HSW_PRI_STRETCH_MAX_X4 REG_FIELD_PREP(HSW_PRI_STRETCH_MAX_MASK, 1)
#define HSW_PRI_STRETCH_MAX_X2 REG_FIELD_PREP(HSW_PRI_STRETCH_MAX_MASK, 2)
#define HSW_PRI_STRETCH_MAX_X1 REG_FIELD_PREP(HSW_PRI_STRETCH_MAX_MASK, 3)
#define HSW_SPR_STRETCH_MAX_MASK REG_GENMASK(26, 25)
#define HSW_SPR_STRETCH_MAX_X8 REG_FIELD_PREP(HSW_SPR_STRETCH_MAX_MASK, 0)
#define HSW_SPR_STRETCH_MAX_X4 REG_FIELD_PREP(HSW_SPR_STRETCH_MAX_MASK, 1)
#define HSW_SPR_STRETCH_MAX_X2 REG_FIELD_PREP(HSW_SPR_STRETCH_MAX_MASK, 2)
#define HSW_SPR_STRETCH_MAX_X1 REG_FIELD_PREP(HSW_SPR_STRETCH_MAX_MASK, 3)
#define HSW_FBCQ_DIS (1 << 22)
#define BDW_DPRS_MASK_VBLANK_SRD (1 << 0)
#define CHICKEN_PIPESL_1(pipe) _MMIO_PIPE(pipe, _CHICKEN_PIPESL_1_A, _CHICKEN_PIPESL_1_B)

16
drivers/gpu/drm/i915/intel_pm.c
View File

@ -7245,11 +7245,16 @@ static void bdw_init_clock_gating(struct drm_i915_private *dev_priv)
intel_uncore_write(&dev_priv->uncore, CHICKEN_PAR1_1,
intel_uncore_read(&dev_priv->uncore, CHICKEN_PAR1_1) | DPA_MASK_VBLANK_SRD);
/* WaPsrDPRSUnmaskVBlankInSRD:bdw */
for_each_pipe(dev_priv, pipe) {
/* WaPsrDPRSUnmaskVBlankInSRD:bdw */
intel_uncore_write(&dev_priv->uncore, CHICKEN_PIPESL_1(pipe),
intel_uncore_read(&dev_priv->uncore, CHICKEN_PIPESL_1(pipe)) |
BDW_DPRS_MASK_VBLANK_SRD);
/* Undocumented but fixes async flip + VT-d corruption */
if (intel_vtd_active())
intel_uncore_rmw(&dev_priv->uncore, CHICKEN_PIPESL_1(pipe),
HSW_PRI_STRETCH_MAX_MASK, HSW_PRI_STRETCH_MAX_X1);
}
/* WaVSRefCountFullforceMissDisable:bdw */
@ -7285,11 +7290,20 @@ static void bdw_init_clock_gating(struct drm_i915_private *dev_priv)
static void hsw_init_clock_gating(struct drm_i915_private *dev_priv)
{
enum pipe pipe;
/* WaFbcAsynchFlipDisableFbcQueue:hsw,bdw */
intel_uncore_write(&dev_priv->uncore, CHICKEN_PIPESL_1(PIPE_A),
intel_uncore_read(&dev_priv->uncore, CHICKEN_PIPESL_1(PIPE_A)) |
HSW_FBCQ_DIS);
for_each_pipe(dev_priv, pipe) {
/* Undocumented but fixes async flip + VT-d corruption */
if (intel_vtd_active())
intel_uncore_rmw(&dev_priv->uncore, CHICKEN_PIPESL_1(pipe),
HSW_PRI_STRETCH_MAX_MASK, HSW_PRI_STRETCH_MAX_X1);
}
/* This is required by WaCatErrorRejectionIssue:hsw */
intel_uncore_write(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,
intel_uncore_read(&dev_priv->uncore, GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |