Each gt contains an independent instance of pcode. Extend pcode functions
to interface with pcode on different gt's. To avoid creating dependency of
display functionality on intel_gt, new pcode function interfaces are
exposed in terms of uncore rather than intel_gt. Previous struct
drm_i915_private based pcode interfaces are preserved.
v2: Expose pcode functions in terms of uncore rather than gt (Jani/Rodrigo)
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
Cc: Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_gt.c | 17 +++++++
drivers/gpu/drm/i915/gt/intel_gt.h | 2 +
drivers/gpu/drm/i915/i915_driver.c | 4 +-
drivers/gpu/drm/i915/intel_pcode.c | 76 +++++++++++++++---------------
drivers/gpu/drm/i915/intel_pcode.h | 29 +++++++++---
5 files changed, 80 insertions(+), 48 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c
index 92394f13b42f..07cfe66dd0e8 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt.c
@@ -28,6 +28,7 @@
#include "intel_rps.h"
#include "intel_gt_sysfs.h"
#include "intel_uncore.h"
+#include "intel_pcode.h"
#include "shmem_utils.h"
static void __intel_gt_init_early(struct intel_gt *gt)
@@ -1240,3 +1241,19 @@ void intel_gt_invalidate_tlbs(struct intel_gt *gt)
intel_uncore_forcewake_put_delayed(uncore, FORCEWAKE_ALL);
mutex_unlock(>->tlb_invalidate_lock);
}
+
+int intel_gt_pcode_init(struct drm_i915_private *i915)
+{
+ struct intel_gt *gt;
+ int id, ret;
+
+ for_each_gt(gt, i915, id) {
+ ret = intel_pcode_init(gt->uncore);
+ if (ret) {
+ drm_err(>->i915->drm, "gt %d: intel_pcode_init failed %d\n", id, ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
diff --git a/drivers/gpu/drm/i915/gt/intel_gt.h b/drivers/gpu/drm/i915/gt/intel_gt.h
index 44c6cb63ccbc..241d833fdb1e 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt.h
+++ b/drivers/gpu/drm/i915/gt/intel_gt.h
@@ -125,6 +125,8 @@ void intel_gt_watchdog_work(struct work_struct *work);
void intel_gt_invalidate_tlbs(struct intel_gt *gt);
+int intel_gt_pcode_init(struct drm_i915_private *i915);
+
struct resource intel_pci_resource(struct pci_dev *pdev, int bar);
#endif /* __INTEL_GT_H__ */
diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c
index 90b0ce5051af..518d6e357017 100644
--- a/drivers/gpu/drm/i915/i915_driver.c
+++ b/drivers/gpu/drm/i915/i915_driver.c
@@ -629,7 +629,7 @@ static int i915_driver_hw_probe(struct drm_i915_private *dev_priv)
intel_opregion_setup(dev_priv);
- ret = intel_pcode_init(dev_priv);
+ ret = intel_gt_pcode_init(dev_priv);
if (ret)
goto err_msi;
@@ -1251,7 +1251,7 @@ static int i915_drm_resume(struct drm_device *dev)
disable_rpm_wakeref_asserts(&dev_priv->runtime_pm);
- ret = intel_pcode_init(dev_priv);
+ ret = intel_gt_pcode_init(dev_priv);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/i915/intel_pcode.c b/drivers/gpu/drm/i915/intel_pcode.c
index ac727546868e..66020b2e461f 100644
--- a/drivers/gpu/drm/i915/intel_pcode.c
+++ b/drivers/gpu/drm/i915/intel_pcode.c
@@ -52,14 +52,12 @@ static int gen7_check_mailbox_status(u32 mbox)
}
}
-static int __snb_pcode_rw(struct drm_i915_private *i915, u32 mbox,
+static int intel_pcode_rw(struct intel_uncore *uncore, u32 mbox,
u32 *val, u32 *val1,
int fast_timeout_us, int slow_timeout_ms,
bool is_read)
{
- struct intel_uncore *uncore = &i915->uncore;
-
- lockdep_assert_held(&i915->sb_lock);
+ lockdep_assert_held(&uncore->i915->sb_lock);
/*
* GEN6_PCODE_* are outside of the forcewake domain, we can use
@@ -88,22 +86,22 @@ static int __snb_pcode_rw(struct drm_i915_private *i915, u32 mbox,
if (is_read && val1)
*val1 = intel_uncore_read_fw(uncore, GEN6_PCODE_DATA1);
- if (GRAPHICS_VER(i915) > 6)
+ if (GRAPHICS_VER(uncore->i915) > 6)
return gen7_check_mailbox_status(mbox);
else
return gen6_check_mailbox_status(mbox);
}
-int snb_pcode_read(struct drm_i915_private *i915, u32 mbox, u32 *val, u32 *val1)
+int intel_pcode_read(struct intel_uncore *uncore, u32 mbox, u32 *val, u32 *val1)
{
int err;
- mutex_lock(&i915->sb_lock);
- err = __snb_pcode_rw(i915, mbox, val, val1, 500, 20, true);
- mutex_unlock(&i915->sb_lock);
+ mutex_lock(&uncore->i915->sb_lock);
+ err = intel_pcode_rw(uncore, mbox, val, val1, 500, 20, true);
+ mutex_unlock(&uncore->i915->sb_lock);
if (err) {
- drm_dbg(&i915->drm,
+ drm_dbg(&uncore->i915->drm,
"warning: pcode (read from mbox %x) mailbox access failed for %ps: %d\n",
mbox, __builtin_return_address(0), err);
}
@@ -111,18 +109,18 @@ int snb_pcode_read(struct drm_i915_private *i915, u32 mbox, u32 *val, u32 *val1)
return err;
}
-int snb_pcode_write_timeout(struct drm_i915_private *i915, u32 mbox, u32 val,
- int fast_timeout_us, int slow_timeout_ms)
+int intel_pcode_write_timeout(struct intel_uncore *uncore, u32 mbox, u32 val,
+ int fast_timeout_us, int slow_timeout_ms)
{
int err;
- mutex_lock(&i915->sb_lock);
- err = __snb_pcode_rw(i915, mbox, &val, NULL,
+ mutex_lock(&uncore->i915->sb_lock);
+ err = intel_pcode_rw(uncore, mbox, &val, NULL,
fast_timeout_us, slow_timeout_ms, false);
- mutex_unlock(&i915->sb_lock);
+ mutex_unlock(&uncore->i915->sb_lock);
if (err) {
- drm_dbg(&i915->drm,
+ drm_dbg(&uncore->i915->drm,
"warning: pcode (write of 0x%08x to mbox %x) mailbox access failed for %ps: %d\n",
val, mbox, __builtin_return_address(0), err);
}
@@ -130,18 +128,18 @@ int snb_pcode_write_timeout(struct drm_i915_private *i915, u32 mbox, u32 val,
return err;
}
-static bool skl_pcode_try_request(struct drm_i915_private *i915, u32 mbox,
- u32 request, u32 reply_mask, u32 reply,
- u32 *status)
+static bool intel_pcode_try_request(struct intel_uncore *uncore, u32 mbox,
+ u32 request, u32 reply_mask, u32 reply,
+ u32 *status)
{
- *status = __snb_pcode_rw(i915, mbox, &request, NULL, 500, 0, true);
+ *status = intel_pcode_rw(uncore, mbox, &request, NULL, 500, 0, true);
return (*status == 0) && ((request & reply_mask) == reply);
}
/**
- * skl_pcode_request - send PCODE request until acknowledgment
- * @i915: device private
+ * intel_pcode_request - send PCODE request until acknowledgment
+ * @uncore: uncore
* @mbox: PCODE mailbox ID the request is targeted for
* @request: request ID
* @reply_mask: mask used to check for request acknowledgment
@@ -158,16 +156,16 @@ static bool skl_pcode_try_request(struct drm_i915_private *i915, u32 mbox,
* Returns 0 on success, %-ETIMEDOUT in case of a timeout, <0 in case of some
* other error as reported by PCODE.
*/
-int skl_pcode_request(struct drm_i915_private *i915, u32 mbox, u32 request,
- u32 reply_mask, u32 reply, int timeout_base_ms)
+int intel_pcode_request(struct intel_uncore *uncore, u32 mbox, u32 request,
+ u32 reply_mask, u32 reply, int timeout_base_ms)
{
u32 status;
int ret;
- mutex_lock(&i915->sb_lock);
+ mutex_lock(&uncore->i915->sb_lock);
#define COND \
- skl_pcode_try_request(i915, mbox, request, reply_mask, reply, &status)
+ intel_pcode_try_request(uncore, mbox, request, reply_mask, reply, &status)
/*
* Prime the PCODE by doing a request first. Normally it guarantees
@@ -193,35 +191,35 @@ int skl_pcode_request(struct drm_i915_private *i915, u32 mbox, u32 request,
* requests, and for any quirks of the PCODE firmware that delays
* the request completion.
*/
- drm_dbg_kms(&i915->drm,
+ drm_dbg_kms(&uncore->i915->drm,
"PCODE timeout, retrying with preemption disabled\n");
- drm_WARN_ON_ONCE(&i915->drm, timeout_base_ms > 3);
+ drm_WARN_ON_ONCE(&uncore->i915->drm, timeout_base_ms > 3);
preempt_disable();
ret = wait_for_atomic(COND, 50);
preempt_enable();
out:
- mutex_unlock(&i915->sb_lock);
+ mutex_unlock(&uncore->i915->sb_lock);
return status ? status : ret;
#undef COND
}
-int intel_pcode_init(struct drm_i915_private *i915)
+int intel_pcode_init(struct intel_uncore *uncore)
{
- int ret = 0;
+ int ret;
- if (!IS_DGFX(i915))
- return ret;
+ if (!IS_DGFX(uncore->i915))
+ return 0;
- ret = skl_pcode_request(i915, DG1_PCODE_STATUS,
- DG1_UNCORE_GET_INIT_STATUS,
- DG1_UNCORE_INIT_STATUS_COMPLETE,
- DG1_UNCORE_INIT_STATUS_COMPLETE, 180000);
+ ret = intel_pcode_request(uncore, DG1_PCODE_STATUS,
+ DG1_UNCORE_GET_INIT_STATUS,
+ DG1_UNCORE_INIT_STATUS_COMPLETE,
+ DG1_UNCORE_INIT_STATUS_COMPLETE, 180000);
- drm_dbg(&i915->drm, "PCODE init status %d\n", ret);
+ drm_dbg(&uncore->i915->drm, "PCODE init status %d\n", ret);
if (ret)
- drm_err(&i915->drm, "Pcode did not report uncore initialization completion!\n");
+ drm_err(&uncore->i915->drm, "Pcode did not report uncore initialization completion!\n");
return ret;
}
diff --git a/drivers/gpu/drm/i915/intel_pcode.h b/drivers/gpu/drm/i915/intel_pcode.h
index 0962a17fac48..a03d4ef688aa 100644
--- a/drivers/gpu/drm/i915/intel_pcode.h
+++ b/drivers/gpu/drm/i915/intel_pcode.h
@@ -8,17 +8,32 @@
#include <linux/types.h>
+struct intel_uncore;
struct drm_i915_private;
-int snb_pcode_read(struct drm_i915_private *i915, u32 mbox, u32 *val, u32 *val1);
-int snb_pcode_write_timeout(struct drm_i915_private *i915, u32 mbox, u32 val,
- int fast_timeout_us, int slow_timeout_ms);
-#define snb_pcode_write(i915, mbox, val) \
+int intel_pcode_read(struct intel_uncore *uncore, u32 mbox, u32 *val, u32 *val1);
+
+int intel_pcode_write_timeout(struct intel_uncore *uncore, u32 mbox, u32 val,
+ int fast_timeout_us, int slow_timeout_ms);
+
+#define intel_pcode_write(uncore, mbox, val) \
+ intel_pcode_write_timeout(uncore, mbox, val, 500, 0)
+
+int intel_pcode_request(struct intel_uncore *uncore, u32 mbox, u32 request,
+ u32 reply_mask, u32 reply, int timeout_base_ms);
+
+#define snb_pcode_read(i915, mbox, val, val1) \
+ intel_pcode_read(&(i915)->uncore, mbox, val, val1)
+
+#define snb_pcode_write_timeout(i915, mbox, val, fast_timeout_us, slow_timeout_ms) \
+ intel_pcode_write_timeout(&(i915)->uncore, mbox, val, fast_timeout_us, slow_timeout_ms)
+
+#define snb_pcode_write(i915, mbox, val) \
snb_pcode_write_timeout(i915, mbox, val, 500, 0)
-int skl_pcode_request(struct drm_i915_private *i915, u32 mbox, u32 request,
- u32 reply_mask, u32 reply, int timeout_base_ms);
+#define skl_pcode_request(i915, mbox, request, reply_mask, reply, timeout_base_ms) \
+ intel_pcode_request(&(i915)->uncore, mbox, request, reply_mask, reply, timeout_base_ms)
-int intel_pcode_init(struct drm_i915_private *i915);
+int intel_pcode_init(struct intel_uncore *uncore);
#endif /* _INTEL_PCODE_H */
--
2.34.1
