[Intel-gfx] [PATCH 1/6] drm/i915/gen9: Removed csr-lock and csr-state
Animesh Manna
animesh.manna at intel.com
Wed Jul 8 07:24:42 PDT 2015
v1: As per review comments from Daniel, removed the csr-lock
and csr-state which was used before in dmc firmware loading.
Planning to have a single async task which will responsible
for firmware loading and register programming for dc5/dc6,
so removed csr-lock and csr-state from intel_csr structure.
Signed-off-by: Animesh Manna <animesh.manna at intel.com>
---
drivers/gpu/drm/i915/i915_dma.c | 1 -
drivers/gpu/drm/i915/i915_drv.c | 6 ----
drivers/gpu/drm/i915/i915_drv.h | 10 -------
drivers/gpu/drm/i915/intel_csr.c | 52 ---------------------------------
drivers/gpu/drm/i915/intel_drv.h | 3 --
drivers/gpu/drm/i915/intel_runtime_pm.c | 17 ++---------
6 files changed, 3 insertions(+), 86 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index c5349fa..1ebf0e1 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -820,7 +820,6 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
spin_lock_init(&dev_priv->mmio_flip_lock);
mutex_init(&dev_priv->sb_lock);
mutex_init(&dev_priv->modeset_restore_lock);
- mutex_init(&dev_priv->csr_lock);
intel_pm_setup(dev);
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index e44dc0d..4d8d2d8 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1019,12 +1019,6 @@ static int skl_suspend_complete(struct drm_i915_private *dev_priv)
{
/* Enabling DC6 is not a hard requirement to enter runtime D3 */
- /*
- * This is to ensure that CSR isn't identified as loaded before
- * CSR-loading program is called during runtime-resume.
- */
- intel_csr_load_status_set(dev_priv, FW_UNINITIALIZED);
-
skl_uninit_cdclk(dev_priv);
return 0;
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 1dbd957..b3a0fd6 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -737,12 +737,6 @@ struct intel_uncore {
#define for_each_fw_domain(domain__, dev_priv__, i__) \
for_each_fw_domain_mask(domain__, FORCEWAKE_ALL, dev_priv__, i__)
-enum csr_state {
- FW_UNINITIALIZED = 0,
- FW_LOADED,
- FW_FAILED
-};
-
struct intel_csr {
const char *fw_path;
__be32 *dmc_payload;
@@ -750,7 +744,6 @@ struct intel_csr {
uint32_t mmio_count;
uint32_t mmioaddr[8];
uint32_t mmiodata[8];
- enum csr_state state;
};
#define DEV_INFO_FOR_EACH_FLAG(func, sep) \
@@ -1689,9 +1682,6 @@ struct drm_i915_private {
struct intel_csr csr;
- /* Display CSR-related protection */
- struct mutex csr_lock;
-
struct intel_gmbus gmbus[GMBUS_NUM_PINS];
/** gmbus_mutex protects against concurrent usage of the single hw gmbus
diff --git a/drivers/gpu/drm/i915/intel_csr.c b/drivers/gpu/drm/i915/intel_csr.c
index 6d8a7bf..62fd1b0 100644
--- a/drivers/gpu/drm/i915/intel_csr.c
+++ b/drivers/gpu/drm/i915/intel_csr.c
@@ -32,13 +32,6 @@
* onwards to drive newly added DMC (Display microcontroller) in display
* engine to save and restore the state of display engine when it enter into
* low-power state and comes back to normal.
- *
- * Firmware loading status will be one of the below states: FW_UNINITIALIZED,
- * FW_LOADED, FW_FAILED.
- *
- * Once the firmware is written into the registers status will be moved from
- * FW_UNINITIALIZED to FW_LOADED and for any erroneous condition status will
- * be moved to FW_FAILED.
*/
#define I915_CSR_SKL "i915/skl_dmc_ver1.bin"
@@ -200,40 +193,6 @@ static char intel_get_substepping(struct drm_device *dev)
}
/**
- * intel_csr_load_status_get() - to get firmware loading status.
- * @dev_priv: i915 device.
- *
- * This function helps to get the firmware loading status.
- *
- * Return: Firmware loading status.
- */
-enum csr_state intel_csr_load_status_get(struct drm_i915_private *dev_priv)
-{
- enum csr_state state;
-
- mutex_lock(&dev_priv->csr_lock);
- state = dev_priv->csr.state;
- mutex_unlock(&dev_priv->csr_lock);
-
- return state;
-}
-
-/**
- * intel_csr_load_status_set() - help to set firmware loading status.
- * @dev_priv: i915 device.
- * @state: enumeration of firmware loading status.
- *
- * Set the firmware loading status.
- */
-void intel_csr_load_status_set(struct drm_i915_private *dev_priv,
- enum csr_state state)
-{
- mutex_lock(&dev_priv->csr_lock);
- dev_priv->csr.state = state;
- mutex_unlock(&dev_priv->csr_lock);
-}
-
-/**
* intel_csr_load_program() - write the firmware from memory to register.
* @dev: drm device.
*
@@ -252,7 +211,6 @@ void intel_csr_load_program(struct drm_device *dev)
return;
}
- mutex_lock(&dev_priv->csr_lock);
fw_size = dev_priv->csr.dmc_fw_size;
for (i = 0; i < fw_size; i++)
I915_WRITE(CSR_PROGRAM_BASE + i * 4,
@@ -262,9 +220,6 @@ void intel_csr_load_program(struct drm_device *dev)
I915_WRITE(dev_priv->csr.mmioaddr[i],
dev_priv->csr.mmiodata[i]);
}
-
- dev_priv->csr.state = FW_LOADED;
- mutex_unlock(&dev_priv->csr_lock);
}
static void finish_csr_load(const struct firmware *fw, void *context)
@@ -393,8 +348,6 @@ static void finish_csr_load(const struct firmware *fw, void *context)
out:
if (fw_loaded)
intel_runtime_pm_put(dev_priv);
- else
- intel_csr_load_status_set(dev_priv, FW_FAILED);
release_firmware(fw);
}
@@ -419,7 +372,6 @@ void intel_csr_ucode_init(struct drm_device *dev)
csr->fw_path = I915_CSR_SKL;
else {
DRM_ERROR("Unexpected: no known CSR firmware for platform\n");
- intel_csr_load_status_set(dev_priv, FW_FAILED);
return;
}
@@ -438,7 +390,6 @@ void intel_csr_ucode_init(struct drm_device *dev)
finish_csr_load);
if (ret) {
i915_firmware_load_error_print(csr->fw_path, ret);
- intel_csr_load_status_set(dev_priv, FW_FAILED);
}
}
@@ -456,14 +407,11 @@ void intel_csr_ucode_fini(struct drm_device *dev)
if (!HAS_CSR(dev))
return;
- intel_csr_load_status_set(dev_priv, FW_FAILED);
kfree(dev_priv->csr.dmc_payload);
}
void assert_csr_loaded(struct drm_i915_private *dev_priv)
{
- WARN(intel_csr_load_status_get(dev_priv) != FW_LOADED,
- "CSR is not loaded.\n");
WARN(!I915_READ(CSR_PROGRAM_BASE),
"CSR program storage start is NULL\n");
WARN(!I915_READ(CSR_SSP_BASE), "CSR SSP Base Not fine\n");
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 3f0a890..f437a90 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1163,9 +1163,6 @@ u32 skl_plane_ctl_rotation(unsigned int rotation);
/* intel_csr.c */
void intel_csr_ucode_init(struct drm_device *dev);
-enum csr_state intel_csr_load_status_get(struct drm_i915_private *dev_priv);
-void intel_csr_load_status_set(struct drm_i915_private *dev_priv,
- enum csr_state state);
void intel_csr_load_program(struct drm_device *dev);
void intel_csr_ucode_fini(struct drm_device *dev);
void assert_csr_loaded(struct drm_i915_private *dev_priv);
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 1a45385..0b81d6f 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -644,21 +644,10 @@ static void skl_set_power_well(struct drm_i915_private *dev_priv,
if ((GEN9_ENABLE_DC5(dev) || SKL_ENABLE_DC6(dev)) &&
power_well->data == SKL_DISP_PW_2) {
- enum csr_state state;
- /* TODO: wait for a completion event or
- * similar here instead of busy
- * waiting using wait_for function.
- */
- wait_for((state = intel_csr_load_status_get(dev_priv)) !=
- FW_UNINITIALIZED, 1000);
- if (state != FW_LOADED)
- DRM_ERROR("CSR firmware not ready (%d)\n",
- state);
+ if (SKL_ENABLE_DC6(dev))
+ skl_enable_dc6(dev_priv);
else
- if (SKL_ENABLE_DC6(dev))
- skl_enable_dc6(dev_priv);
- else
- gen9_enable_dc5(dev_priv);
+ gen9_enable_dc5(dev_priv);
}
}
}
--
2.0.2
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