[Intel-gfx] [PATCH v3 1/2] drm/i915: Make sandybridge_pcode_read() deal with the second data register
Ville Syrjala
ville.syrjala at linux.intel.com
Fri May 3 19:08:30 UTC 2019
From: Ville Syrjälä <ville.syrjala at linux.intel.com>
The pcode mailbox has two data registers. So far we've only ever used
the one, but that's about to change. Expose the second data register to
the callers of sandybridge_pcode_read().
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 4 ++--
drivers/gpu/drm/i915/intel_pm.c | 12 +++++++-----
drivers/gpu/drm/i915/intel_sideband.c | 15 +++++++++------
drivers/gpu/drm/i915/intel_sideband.h | 3 ++-
4 files changed, 20 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 14cd83e9ea8b..203088f6f269 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1494,7 +1494,7 @@ static int gen6_drpc_info(struct seq_file *m)
if (INTEL_GEN(dev_priv) <= 7)
sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS,
- &rc6vids);
+ &rc6vids, NULL);
seq_printf(m, "RC1e Enabled: %s\n",
yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
@@ -1777,7 +1777,7 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused)
ia_freq = gpu_freq;
sandybridge_pcode_read(dev_priv,
GEN6_PCODE_READ_MIN_FREQ_TABLE,
- &ia_freq);
+ &ia_freq, NULL);
seq_printf(m, "%d\t\t%d\t\t\t\t%d\n",
intel_gpu_freq(dev_priv, (gpu_freq *
(IS_GEN9_BC(dev_priv) ||
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index ef9fc77f8162..b043a96e123c 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -2822,7 +2822,7 @@ static void intel_read_wm_latency(struct drm_i915_private *dev_priv,
val = 0; /* data0 to be programmed to 0 for first set */
ret = sandybridge_pcode_read(dev_priv,
GEN9_PCODE_READ_MEM_LATENCY,
- &val);
+ &val, NULL);
if (ret) {
DRM_ERROR("SKL Mailbox read error = %d\n", ret);
@@ -2841,7 +2841,7 @@ static void intel_read_wm_latency(struct drm_i915_private *dev_priv,
val = 1; /* data0 to be programmed to 1 for second set */
ret = sandybridge_pcode_read(dev_priv,
GEN9_PCODE_READ_MEM_LATENCY,
- &val);
+ &val, NULL);
if (ret) {
DRM_ERROR("SKL Mailbox read error = %d\n", ret);
return;
@@ -7061,7 +7061,7 @@ static void gen6_init_rps_frequencies(struct drm_i915_private *dev_priv)
if (sandybridge_pcode_read(dev_priv,
HSW_PCODE_DYNAMIC_DUTY_CYCLE_CONTROL,
- &ddcc_status) == 0)
+ &ddcc_status, NULL) == 0)
rps->efficient_freq =
clamp_t(u8,
((ddcc_status >> 8) & 0xff),
@@ -7408,7 +7408,8 @@ static void gen6_enable_rc6(struct drm_i915_private *dev_priv)
GEN6_RC_CTL_HW_ENABLE);
rc6vids = 0;
- ret = sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids);
+ ret = sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS,
+ &rc6vids, NULL);
if (IS_GEN(dev_priv, 6) && ret) {
DRM_DEBUG_DRIVER("Couldn't check for BIOS workaround\n");
} else if (IS_GEN(dev_priv, 6) && (GEN6_DECODE_RC6_VID(rc6vids & 0xff) < 450)) {
@@ -8555,7 +8556,8 @@ void intel_init_gt_powersave(struct drm_i915_private *dev_priv)
IS_IVYBRIDGE(dev_priv) || IS_HASWELL(dev_priv)) {
u32 params = 0;
- sandybridge_pcode_read(dev_priv, GEN6_READ_OC_PARAMS, ¶ms);
+ sandybridge_pcode_read(dev_priv, GEN6_READ_OC_PARAMS,
+ ¶ms, NULL);
if (params & BIT(31)) { /* OC supported */
DRM_DEBUG_DRIVER("Overclocking supported, max: %dMHz, overclock: %dMHz\n",
(rps->max_freq & 0xff) * 50,
diff --git a/drivers/gpu/drm/i915/intel_sideband.c b/drivers/gpu/drm/i915/intel_sideband.c
index 87b5a14c7ca8..a115625e980c 100644
--- a/drivers/gpu/drm/i915/intel_sideband.c
+++ b/drivers/gpu/drm/i915/intel_sideband.c
@@ -374,7 +374,7 @@ static inline int gen7_check_mailbox_status(u32 mbox)
}
static int __sandybridge_pcode_rw(struct drm_i915_private *i915,
- u32 mbox, u32 *val,
+ u32 mbox, u32 *val, u32 *val1,
int fast_timeout_us,
int slow_timeout_ms,
bool is_read)
@@ -393,7 +393,7 @@ static int __sandybridge_pcode_rw(struct drm_i915_private *i915,
return -EAGAIN;
intel_uncore_write_fw(uncore, GEN6_PCODE_DATA, *val);
- intel_uncore_write_fw(uncore, GEN6_PCODE_DATA1, 0);
+ intel_uncore_write_fw(uncore, GEN6_PCODE_DATA1, val1 ? *val1 : 0);
intel_uncore_write_fw(uncore,
GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox);
@@ -407,6 +407,8 @@ static int __sandybridge_pcode_rw(struct drm_i915_private *i915,
if (is_read)
*val = intel_uncore_read_fw(uncore, GEN6_PCODE_DATA);
+ if (is_read && val1)
+ *val1 = intel_uncore_read_fw(uncore, GEN6_PCODE_DATA1);
if (INTEL_GEN(i915) > 6)
return gen7_check_mailbox_status(mbox);
@@ -414,12 +416,13 @@ static int __sandybridge_pcode_rw(struct drm_i915_private *i915,
return gen6_check_mailbox_status(mbox);
}
-int sandybridge_pcode_read(struct drm_i915_private *i915, u32 mbox, u32 *val)
+int sandybridge_pcode_read(struct drm_i915_private *i915, u32 mbox,
+ u32 *val, u32 *val1)
{
int err;
mutex_lock(&i915->sb_lock);
- err = __sandybridge_pcode_rw(i915, mbox, val,
+ err = __sandybridge_pcode_rw(i915, mbox, val, val1,
500, 0,
true);
mutex_unlock(&i915->sb_lock);
@@ -440,7 +443,7 @@ int sandybridge_pcode_write_timeout(struct drm_i915_private *i915,
int err;
mutex_lock(&i915->sb_lock);
- err = __sandybridge_pcode_rw(i915, mbox, &val,
+ err = __sandybridge_pcode_rw(i915, mbox, &val, NULL,
fast_timeout_us, slow_timeout_ms,
false);
mutex_unlock(&i915->sb_lock);
@@ -457,7 +460,7 @@ static bool skl_pcode_try_request(struct drm_i915_private *i915, u32 mbox,
u32 request, u32 reply_mask, u32 reply,
u32 *status)
{
- *status = __sandybridge_pcode_rw(i915, mbox, &request,
+ *status = __sandybridge_pcode_rw(i915, mbox, &request, NULL,
500, 0,
true);
diff --git a/drivers/gpu/drm/i915/intel_sideband.h b/drivers/gpu/drm/i915/intel_sideband.h
index a0907e2c4992..7fb95745a444 100644
--- a/drivers/gpu/drm/i915/intel_sideband.h
+++ b/drivers/gpu/drm/i915/intel_sideband.h
@@ -127,7 +127,8 @@ u32 intel_sbi_read(struct drm_i915_private *i915, u16 reg,
void intel_sbi_write(struct drm_i915_private *i915, u16 reg, u32 value,
enum intel_sbi_destination destination);
-int sandybridge_pcode_read(struct drm_i915_private *i915, u32 mbox, u32 *val);
+int sandybridge_pcode_read(struct drm_i915_private *i915, u32 mbox,
+ u32 *val, u32 *val1);
int sandybridge_pcode_write_timeout(struct drm_i915_private *i915, u32 mbox,
u32 val, int fast_timeout_us,
int slow_timeout_ms);
--
2.21.0
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