1 files changed, 0 insertions, 228 deletions
diff --git a/drivers/gpu/drm/i915/intel_sideband.c b/drivers/gpu/drm/i915/intel_sideband.c
index 59ef67216c15..1d30273b35c1 100644
--- a/drivers/gpu/drm/i915/intel_sideband.c
+++ b/drivers/gpu/drm/i915/intel_sideband.c
@@ -90,231 +90,3 @@ void intel_sbi_write(struct drm_i915_private *i915, u16 reg, u32 value,
 {
 	intel_sbi_rw(i915, reg, destination, &value, false);
 }
-
-static int gen6_check_mailbox_status(u32 mbox)
-{
-	switch (mbox & GEN6_PCODE_ERROR_MASK) {
-	case GEN6_PCODE_SUCCESS:
-		return 0;
-	case GEN6_PCODE_UNIMPLEMENTED_CMD:
-		return -ENODEV;
-	case GEN6_PCODE_ILLEGAL_CMD:
-		return -ENXIO;
-	case GEN6_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE:
-	case GEN7_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE:
-		return -EOVERFLOW;
-	case GEN6_PCODE_TIMEOUT:
-		return -ETIMEDOUT;
-	default:
-		MISSING_CASE(mbox & GEN6_PCODE_ERROR_MASK);
-		return 0;
-	}
-}
-
-static int gen7_check_mailbox_status(u32 mbox)
-{
-	switch (mbox & GEN6_PCODE_ERROR_MASK) {
-	case GEN6_PCODE_SUCCESS:
-		return 0;
-	case GEN6_PCODE_ILLEGAL_CMD:
-		return -ENXIO;
-	case GEN7_PCODE_TIMEOUT:
-		return -ETIMEDOUT;
-	case GEN7_PCODE_ILLEGAL_DATA:
-		return -EINVAL;
-	case GEN11_PCODE_ILLEGAL_SUBCOMMAND:
-		return -ENXIO;
-	case GEN11_PCODE_LOCKED:
-		return -EBUSY;
-	case GEN11_PCODE_REJECTED:
-		return -EACCES;
-	case GEN7_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE:
-		return -EOVERFLOW;
-	default:
-		MISSING_CASE(mbox & GEN6_PCODE_ERROR_MASK);
-		return 0;
-	}
-}
-
-static int __sandybridge_pcode_rw(struct drm_i915_private *i915,
-				  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);
-
-	/*
-	 * GEN6_PCODE_* are outside of the forcewake domain, we can use
-	 * intel_uncore_read/write_fw variants to reduce the amount of work
-	 * required when reading/writing.
-	 */
-
-	if (intel_uncore_read_fw(uncore, GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY)
-		return -EAGAIN;
-
-	intel_uncore_write_fw(uncore, GEN6_PCODE_DATA, *val);
-	intel_uncore_write_fw(uncore, GEN6_PCODE_DATA1, val1 ? *val1 : 0);
-	intel_uncore_write_fw(uncore,
-			      GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox);
-
-	if (__intel_wait_for_register_fw(uncore,
-					 GEN6_PCODE_MAILBOX,
-					 GEN6_PCODE_READY, 0,
-					 fast_timeout_us,
-					 slow_timeout_ms,
-					 &mbox))
-		return -ETIMEDOUT;
-
-	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 (GRAPHICS_VER(i915) > 6)
-		return gen7_check_mailbox_status(mbox);
-	else
-		return gen6_check_mailbox_status(mbox);
-}
-
-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, val1,
-				     500, 20,
-				     true);
-	mutex_unlock(&i915->sb_lock);
-
-	if (err) {
-		drm_dbg(&i915->drm,
-			"warning: pcode (read from mbox %x) mailbox access failed for %ps: %d\n",
-			mbox, __builtin_return_address(0), err);
-	}
-
-	return err;
-}
-
-int sandybridge_pcode_write_timeout(struct drm_i915_private *i915,
-				    u32 mbox, u32 val,
-				    int fast_timeout_us,
-				    int slow_timeout_ms)
-{
-	int err;
-
-	mutex_lock(&i915->sb_lock);
-	err = __sandybridge_pcode_rw(i915, mbox, &val, NULL,
-				     fast_timeout_us, slow_timeout_ms,
-				     false);
-	mutex_unlock(&i915->sb_lock);
-
-	if (err) {
-		drm_dbg(&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);
-	}
-
-	return err;
-}
-
-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, NULL,
-					 500, 0,
-					 true);
-
-	return *status || ((request & reply_mask) == reply);
-}
-
-/**
- * skl_pcode_request - send PCODE request until acknowledgment
- * @i915: device private
- * @mbox: PCODE mailbox ID the request is targeted for
- * @request: request ID
- * @reply_mask: mask used to check for request acknowledgment
- * @reply: value used to check for request acknowledgment
- * @timeout_base_ms: timeout for polling with preemption enabled
- *
- * Keep resending the @request to @mbox until PCODE acknowledges it, PCODE
- * reports an error or an overall timeout of @timeout_base_ms+50 ms expires.
- * The request is acknowledged once the PCODE reply dword equals @reply after
- * applying @reply_mask. Polling is first attempted with preemption enabled
- * for @timeout_base_ms and if this times out for another 50 ms with
- * preemption disabled.
- *
- * 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)
-{
-	u32 status;
-	int ret;
-
-	mutex_lock(&i915->sb_lock);
-
-#define COND \
-	skl_pcode_try_request(i915, mbox, request, reply_mask, reply, &status)
-
-	/*
-	 * Prime the PCODE by doing a request first. Normally it guarantees
-	 * that a subsequent request, at most @timeout_base_ms later, succeeds.
-	 * _wait_for() doesn't guarantee when its passed condition is evaluated
-	 * first, so send the first request explicitly.
-	 */
-	if (COND) {
-		ret = 0;
-		goto out;
-	}
-	ret = _wait_for(COND, timeout_base_ms * 1000, 10, 10);
-	if (!ret)
-		goto out;
-
-	/*
-	 * The above can time out if the number of requests was low (2 in the
-	 * worst case) _and_ PCODE was busy for some reason even after a
-	 * (queued) request and @timeout_base_ms delay. As a workaround retry
-	 * the poll with preemption disabled to maximize the number of
-	 * requests. Increase the timeout from @timeout_base_ms to 50ms to
-	 * account for interrupts that could reduce the number of these
-	 * requests, and for any quirks of the PCODE firmware that delays
-	 * the request completion.
-	 */
-	drm_dbg_kms(&i915->drm,
-		    "PCODE timeout, retrying with preemption disabled\n");
-	drm_WARN_ON_ONCE(&i915->drm, timeout_base_ms > 3);
-	preempt_disable();
-	ret = wait_for_atomic(COND, 50);
-	preempt_enable();
-
-out:
-	mutex_unlock(&i915->sb_lock);
-	return ret ? ret : status;
-#undef COND
-}
-
-int intel_pcode_init(struct drm_i915_private *i915)
-{
-	int ret = 0;
-
-	if (!IS_DGFX(i915))
-		return ret;
-
-	ret = skl_pcode_request(i915, 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);
-
-	if (ret)
-		drm_err(&i915->drm, "Pcode did not report uncore initialization completion!\n");
-
-	return ret;
-}