sandybride_pcode is another sideband, so move it to their new home.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_drv.h | 5 -
drivers/gpu/drm/i915/intel_hdcp.c | 3 +-
drivers/gpu/drm/i915/intel_pm.c | 190 ----------------------------------
drivers/gpu/drm/i915/intel_sideband.c | 190 ++++++++++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_sideband.h | 5 +
5 files changed, 197 insertions(+), 196 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 4d9e9741ed8f..a0bb0f018a76 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3706,11 +3706,6 @@ intel_display_capture_error_state(struct
drm_i915_private *dev_priv);
extern void intel_display_print_error_state(struct drm_i915_error_state_buf *e,
struct intel_display_error_state
*error);
-int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32
*val);
-int sandybridge_pcode_write(struct drm_i915_private *dev_priv, u32 mbox, u32
val);
-int skl_pcode_request(struct drm_i915_private *dev_priv, u32 mbox, u32 request,
- u32 reply_mask, u32 reply, int timeout_base_ms);
-
/* intel_dpio_phy.c */
void bxt_port_to_phy_channel(struct drm_i915_private *dev_priv, enum port port,
enum dpio_phy *phy, enum dpio_channel *ch);
diff --git a/drivers/gpu/drm/i915/intel_hdcp.c
b/drivers/gpu/drm/i915/intel_hdcp.c
index d0e97172b8ed..1afae93707a1 100644
--- a/drivers/gpu/drm/i915/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/intel_hdcp.c
@@ -11,8 +11,9 @@
#include <linux/i2c.h>
#include <linux/random.h>
-#include "intel_drv.h"
#include "i915_reg.h"
+#include "intel_drv.h"
+#include "intel_sideband.h"
#define KEY_LOAD_TRIES 5
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 18945264b835..a69b742147f7 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -9080,196 +9080,6 @@ void intel_init_pm(struct drm_i915_private *dev_priv)
}
}
-static inline int gen6_check_mailbox_status(struct drm_i915_private *dev_priv)
-{
- uint32_t flags =
- I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_ERROR_MASK;
-
- switch (flags) {
- 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(flags);
- return 0;
- }
-}
-
-static inline int gen7_check_mailbox_status(struct drm_i915_private *dev_priv)
-{
- uint32_t flags =
- I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_ERROR_MASK;
-
- switch (flags) {
- 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 GEN7_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE:
- return -EOVERFLOW;
- default:
- MISSING_CASE(flags);
- return 0;
- }
-}
-
-static int __sandybridge_pcode_rw(struct drm_i915_private *dev_priv,
- u32 mbox, u32 *val, bool is_read)
-{
- int status;
-
- lockdep_assert_held(&dev_priv->sb_lock);
-
- /*
- * GEN6_PCODE_* are outside of the forcewake domain, we can
- * use te fw I915_READ variants to reduce the amount of work
- * required when reading/writing.
- */
-
- if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY)
- return -EAGAIN;
-
- I915_WRITE_FW(GEN6_PCODE_DATA, *val);
- I915_WRITE_FW(GEN6_PCODE_DATA1, 0);
- I915_WRITE_FW(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox);
-
- if (__intel_wait_for_register_fw(dev_priv,
- GEN6_PCODE_MAILBOX, GEN6_PCODE_READY,
0,
- 500, 0, NULL))
- return -ETIMEDOUT;
-
- if (is_read)
- *val = I915_READ_FW(GEN6_PCODE_DATA);
- I915_WRITE_FW(GEN6_PCODE_DATA, 0);
-
- if (INTEL_GEN(dev_priv) > 6)
- status = gen7_check_mailbox_status(dev_priv);
- else
- status = gen6_check_mailbox_status(dev_priv);
-
- return status;
-}
-
-int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32
*val)
-{
- int status;
-
- mutex_lock(&dev_priv->sb_lock);
- status = __sandybridge_pcode_rw(dev_priv, mbox, val, true);
- mutex_unlock(&dev_priv->sb_lock);
-
- if (status) {
- DRM_DEBUG_DRIVER("warning: pcode (read from mbox %x) mailbox
access failed for %ps: %d\n",
- mbox, __builtin_return_address(0), status);
- }
-
- return status;
-}
-
-int sandybridge_pcode_write(struct drm_i915_private *dev_priv,
- u32 mbox, u32 val)
-{
- int status;
-
- mutex_lock(&dev_priv->sb_lock);
- status = __sandybridge_pcode_rw(dev_priv, mbox, &val, false);
- mutex_unlock(&dev_priv->sb_lock);
-
- if (status) {
- DRM_DEBUG_DRIVER("warning: pcode (write of 0x%08x to mbox %x)
mailbox access failed for %ps: %d\n",
- val, mbox, __builtin_return_address(0),
status);
- }
-
- return status;
-}
-
-static bool skl_pcode_try_request(struct drm_i915_private *dev_priv, u32 mbox,
- u32 request, u32 reply_mask, u32 reply,
- u32 *status)
-{
- *status = __sandybridge_pcode_rw(dev_priv, mbox, &request, true);
-
- return *status || ((request & reply_mask) == reply);
-}
-
-/**
- * skl_pcode_request - send PCODE request until acknowledgment
- * @dev_priv: 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 *dev_priv, u32 mbox, u32 request,
- u32 reply_mask, u32 reply, int timeout_base_ms)
-{
- u32 status;
- int ret;
-
- mutex_lock(&dev_priv->sb_lock);
-
-#define COND skl_pcode_try_request(dev_priv, 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_DEBUG_KMS("PCODE timeout, retrying with preemption disabled\n");
- WARN_ON_ONCE(timeout_base_ms > 3);
- preempt_disable();
- ret = wait_for_atomic(COND, 50);
- preempt_enable();
-
-out:
- mutex_unlock(&dev_priv->sb_lock);
- return ret ? ret : status;
-#undef COND
-}
-
static int byt_gpu_freq(struct drm_i915_private *dev_priv, int val)
{
struct intel_rps *rps = &dev_priv->gt_pm.rps;
diff --git a/drivers/gpu/drm/i915/intel_sideband.c
b/drivers/gpu/drm/i915/intel_sideband.c
index 6815be9e5b7c..a9ba378bf9fc 100644
--- a/drivers/gpu/drm/i915/intel_sideband.c
+++ b/drivers/gpu/drm/i915/intel_sideband.c
@@ -383,3 +383,193 @@ void vlv_flisdsi_put(struct drm_i915_private *dev_priv)
{
vlv_iosf_sb_put(dev_priv, BIT(VLV_IOSF_SB_FLISDSI));
}
+
+static inline int gen6_check_mailbox_status(struct drm_i915_private *dev_priv)
+{
+ uint32_t flags =
+ I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_ERROR_MASK;
+
+ switch (flags) {
+ 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(flags);
+ return 0;
+ }
+}
+
+static inline int gen7_check_mailbox_status(struct drm_i915_private *dev_priv)
+{
+ uint32_t flags =
+ I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_ERROR_MASK;
+
+ switch (flags) {
+ 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 GEN7_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE:
+ return -EOVERFLOW;
+ default:
+ MISSING_CASE(flags);
+ return 0;
+ }
+}
+
+static int __sandybridge_pcode_rw(struct drm_i915_private *dev_priv,
+ u32 mbox, u32 *val, bool is_read)
+{
+ int status;
+
+ lockdep_assert_held(&dev_priv->sb_lock);
+
+ /*
+ * GEN6_PCODE_* are outside of the forcewake domain, we can
+ * use te fw I915_READ variants to reduce the amount of work
+ * required when reading/writing.
+ */
+
+ if (I915_READ_FW(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY)
+ return -EAGAIN;
+
+ I915_WRITE_FW(GEN6_PCODE_DATA, *val);
+ I915_WRITE_FW(GEN6_PCODE_DATA1, 0);
+ I915_WRITE_FW(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY | mbox);
+
+ if (__intel_wait_for_register_fw(dev_priv,
+ GEN6_PCODE_MAILBOX, GEN6_PCODE_READY,
0,
+ 500, 0, NULL))
+ return -ETIMEDOUT;
+
+ if (is_read)
+ *val = I915_READ_FW(GEN6_PCODE_DATA);
+ I915_WRITE_FW(GEN6_PCODE_DATA, 0);
+
+ if (INTEL_GEN(dev_priv) > 6)
+ status = gen7_check_mailbox_status(dev_priv);
+ else
+ status = gen6_check_mailbox_status(dev_priv);
+
+ return status;
+}
+
+int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32
*val)
+{
+ int status;
+
+ mutex_lock(&dev_priv->sb_lock);
+ status = __sandybridge_pcode_rw(dev_priv, mbox, val, true);
+ mutex_unlock(&dev_priv->sb_lock);
+
+ if (status) {
+ DRM_DEBUG_DRIVER("warning: pcode (read from mbox %x) mailbox
access failed for %ps: %d\n",
+ mbox, __builtin_return_address(0), status);
+ }
+
+ return status;
+}
+
+int sandybridge_pcode_write(struct drm_i915_private *dev_priv,
+ u32 mbox, u32 val)
+{
+ int status;
+
+ mutex_lock(&dev_priv->sb_lock);
+ status = __sandybridge_pcode_rw(dev_priv, mbox, &val, false);
+ mutex_unlock(&dev_priv->sb_lock);
+
+ if (status) {
+ DRM_DEBUG_DRIVER("warning: pcode (write of 0x%08x to mbox %x)
mailbox access failed for %ps: %d\n",
+ val, mbox, __builtin_return_address(0),
status);
+ }
+
+ return status;
+}
+
+static bool skl_pcode_try_request(struct drm_i915_private *dev_priv, u32 mbox,
+ u32 request, u32 reply_mask, u32 reply,
+ u32 *status)
+{
+ *status = __sandybridge_pcode_rw(dev_priv, mbox, &request, true);
+
+ return *status || ((request & reply_mask) == reply);
+}
+
+/**
+ * skl_pcode_request - send PCODE request until acknowledgment
+ * @dev_priv: 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 *dev_priv, u32 mbox, u32 request,
+ u32 reply_mask, u32 reply, int timeout_base_ms)
+{
+ u32 status;
+ int ret;
+
+ mutex_lock(&dev_priv->sb_lock);
+
+#define COND skl_pcode_try_request(dev_priv, 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_DEBUG_KMS("PCODE timeout, retrying with preemption disabled\n");
+ WARN_ON_ONCE(timeout_base_ms > 3);
+ preempt_disable();
+ ret = wait_for_atomic(COND, 50);
+ preempt_enable();
+
+out:
+ mutex_unlock(&dev_priv->sb_lock);
+ return ret ? ret : status;
+#undef COND
+}
diff --git a/drivers/gpu/drm/i915/intel_sideband.h
b/drivers/gpu/drm/i915/intel_sideband.h
index 46e917dd3973..999c1da2cd93 100644
--- a/drivers/gpu/drm/i915/intel_sideband.h
+++ b/drivers/gpu/drm/i915/intel_sideband.h
@@ -68,4 +68,9 @@ u32 intel_sbi_read(struct drm_i915_private *dev_priv, u16 reg,
void intel_sbi_write(struct drm_i915_private *dev_priv, u16 reg, u32 value,
enum intel_sbi_destination destination);
+int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32
*val);
+int sandybridge_pcode_write(struct drm_i915_private *dev_priv, u32 mbox, u32
val);
+int skl_pcode_request(struct drm_i915_private *dev_priv, u32 mbox, u32 request,
+ u32 reply_mask, u32 reply, int timeout_base_ms);
+
#endif /* _INTEL_SIDEBAND_H */
--
2.15.1
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