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path: root/drivers/gpu/drm/i915/intel_uc.c
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Diffstat (limited to 'drivers/gpu/drm/i915/intel_uc.c')
-rw-r--r--drivers/gpu/drm/i915/intel_uc.c363
1 files changed, 57 insertions, 306 deletions
diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c
index 0178ba42a0e5..25bd162f38d2 100644
--- a/drivers/gpu/drm/i915/intel_uc.c
+++ b/drivers/gpu/drm/i915/intel_uc.c
@@ -22,22 +22,9 @@
*
*/
-#include "i915_drv.h"
#include "intel_uc.h"
-#include <linux/firmware.h>
-
-/* Cleans up uC firmware by releasing the firmware GEM obj.
- */
-static void __intel_uc_fw_fini(struct intel_uc_fw *uc_fw)
-{
- struct drm_i915_gem_object *obj;
-
- obj = fetch_and_zero(&uc_fw->obj);
- if (obj)
- i915_gem_object_put(obj);
-
- uc_fw->fetch_status = INTEL_UC_FIRMWARE_NONE;
-}
+#include "i915_drv.h"
+#include "i915_guc_submission.h"
/* Reset GuC providing us with fresh state for both GuC and HuC.
*/
@@ -63,234 +50,70 @@ static int __intel_uc_reset_hw(struct drm_i915_private *dev_priv)
void intel_uc_sanitize_options(struct drm_i915_private *dev_priv)
{
if (!HAS_GUC(dev_priv)) {
- if (i915.enable_guc_loading > 0 ||
- i915.enable_guc_submission > 0)
+ if (i915_modparams.enable_guc_loading > 0 ||
+ i915_modparams.enable_guc_submission > 0)
DRM_INFO("Ignoring GuC options, no hardware\n");
- i915.enable_guc_loading = 0;
- i915.enable_guc_submission = 0;
+ i915_modparams.enable_guc_loading = 0;
+ i915_modparams.enable_guc_submission = 0;
return;
}
/* A negative value means "use platform default" */
- if (i915.enable_guc_loading < 0)
- i915.enable_guc_loading = HAS_GUC_UCODE(dev_priv);
+ if (i915_modparams.enable_guc_loading < 0)
+ i915_modparams.enable_guc_loading = HAS_GUC_UCODE(dev_priv);
/* Verify firmware version */
- if (i915.enable_guc_loading) {
+ if (i915_modparams.enable_guc_loading) {
if (HAS_HUC_UCODE(dev_priv))
intel_huc_select_fw(&dev_priv->huc);
- if (intel_guc_select_fw(&dev_priv->guc))
- i915.enable_guc_loading = 0;
+ if (intel_guc_fw_select(&dev_priv->guc))
+ i915_modparams.enable_guc_loading = 0;
}
/* Can't enable guc submission without guc loaded */
- if (!i915.enable_guc_loading)
- i915.enable_guc_submission = 0;
+ if (!i915_modparams.enable_guc_loading)
+ i915_modparams.enable_guc_submission = 0;
/* A negative value means "use platform default" */
- if (i915.enable_guc_submission < 0)
- i915.enable_guc_submission = HAS_GUC_SCHED(dev_priv);
-}
-
-static void gen8_guc_raise_irq(struct intel_guc *guc)
-{
- struct drm_i915_private *dev_priv = guc_to_i915(guc);
-
- I915_WRITE(GUC_SEND_INTERRUPT, GUC_SEND_TRIGGER);
+ if (i915_modparams.enable_guc_submission < 0)
+ i915_modparams.enable_guc_submission = HAS_GUC_SCHED(dev_priv);
}
void intel_uc_init_early(struct drm_i915_private *dev_priv)
{
- struct intel_guc *guc = &dev_priv->guc;
-
- intel_guc_ct_init_early(&guc->ct);
-
- mutex_init(&guc->send_mutex);
- guc->send = intel_guc_send_nop;
- guc->notify = gen8_guc_raise_irq;
-}
-
-static void fetch_uc_fw(struct drm_i915_private *dev_priv,
- struct intel_uc_fw *uc_fw)
-{
- struct pci_dev *pdev = dev_priv->drm.pdev;
- struct drm_i915_gem_object *obj;
- const struct firmware *fw = NULL;
- struct uc_css_header *css;
- size_t size;
- int err;
-
- if (!uc_fw->path)
- return;
-
- uc_fw->fetch_status = INTEL_UC_FIRMWARE_PENDING;
-
- DRM_DEBUG_DRIVER("before requesting firmware: uC fw fetch status %s\n",
- intel_uc_fw_status_repr(uc_fw->fetch_status));
-
- err = request_firmware(&fw, uc_fw->path, &pdev->dev);
- if (err)
- goto fail;
- if (!fw)
- goto fail;
-
- DRM_DEBUG_DRIVER("fetch uC fw from %s succeeded, fw %p\n",
- uc_fw->path, fw);
-
- /* Check the size of the blob before examining buffer contents */
- if (fw->size < sizeof(struct uc_css_header)) {
- DRM_NOTE("Firmware header is missing\n");
- goto fail;
- }
-
- css = (struct uc_css_header *)fw->data;
-
- /* Firmware bits always start from header */
- uc_fw->header_offset = 0;
- uc_fw->header_size = (css->header_size_dw - css->modulus_size_dw -
- css->key_size_dw - css->exponent_size_dw) * sizeof(u32);
-
- if (uc_fw->header_size != sizeof(struct uc_css_header)) {
- DRM_NOTE("CSS header definition mismatch\n");
- goto fail;
- }
-
- /* then, uCode */
- uc_fw->ucode_offset = uc_fw->header_offset + uc_fw->header_size;
- uc_fw->ucode_size = (css->size_dw - css->header_size_dw) * sizeof(u32);
-
- /* now RSA */
- if (css->key_size_dw != UOS_RSA_SCRATCH_MAX_COUNT) {
- DRM_NOTE("RSA key size is bad\n");
- goto fail;
- }
- uc_fw->rsa_offset = uc_fw->ucode_offset + uc_fw->ucode_size;
- uc_fw->rsa_size = css->key_size_dw * sizeof(u32);
-
- /* At least, it should have header, uCode and RSA. Size of all three. */
- size = uc_fw->header_size + uc_fw->ucode_size + uc_fw->rsa_size;
- if (fw->size < size) {
- DRM_NOTE("Missing firmware components\n");
- goto fail;
- }
-
- /*
- * The GuC firmware image has the version number embedded at a
- * well-known offset within the firmware blob; note that major / minor
- * version are TWO bytes each (i.e. u16), although all pointers and
- * offsets are defined in terms of bytes (u8).
- */
- switch (uc_fw->type) {
- case INTEL_UC_FW_TYPE_GUC:
- /* Header and uCode will be loaded to WOPCM. Size of the two. */
- size = uc_fw->header_size + uc_fw->ucode_size;
-
- /* Top 32k of WOPCM is reserved (8K stack + 24k RC6 context). */
- if (size > intel_guc_wopcm_size(dev_priv)) {
- DRM_ERROR("Firmware is too large to fit in WOPCM\n");
- goto fail;
- }
- uc_fw->major_ver_found = css->guc.sw_version >> 16;
- uc_fw->minor_ver_found = css->guc.sw_version & 0xFFFF;
- break;
-
- case INTEL_UC_FW_TYPE_HUC:
- uc_fw->major_ver_found = css->huc.sw_version >> 16;
- uc_fw->minor_ver_found = css->huc.sw_version & 0xFFFF;
- break;
-
- default:
- DRM_ERROR("Unknown firmware type %d\n", uc_fw->type);
- err = -ENOEXEC;
- goto fail;
- }
-
- if (uc_fw->major_ver_wanted == 0 && uc_fw->minor_ver_wanted == 0) {
- DRM_NOTE("Skipping %s firmware version check\n",
- intel_uc_fw_type_repr(uc_fw->type));
- } else if (uc_fw->major_ver_found != uc_fw->major_ver_wanted ||
- uc_fw->minor_ver_found < uc_fw->minor_ver_wanted) {
- DRM_NOTE("%s firmware version %d.%d, required %d.%d\n",
- intel_uc_fw_type_repr(uc_fw->type),
- uc_fw->major_ver_found, uc_fw->minor_ver_found,
- uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted);
- err = -ENOEXEC;
- goto fail;
- }
-
- DRM_DEBUG_DRIVER("firmware version %d.%d OK (minimum %d.%d)\n",
- uc_fw->major_ver_found, uc_fw->minor_ver_found,
- uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted);
-
- obj = i915_gem_object_create_from_data(dev_priv, fw->data, fw->size);
- if (IS_ERR(obj)) {
- err = PTR_ERR(obj);
- goto fail;
- }
-
- uc_fw->obj = obj;
- uc_fw->size = fw->size;
-
- DRM_DEBUG_DRIVER("uC fw fetch status SUCCESS, obj %p\n",
- uc_fw->obj);
-
- release_firmware(fw);
- uc_fw->fetch_status = INTEL_UC_FIRMWARE_SUCCESS;
- return;
-
-fail:
- DRM_WARN("Failed to fetch valid uC firmware from %s (error %d)\n",
- uc_fw->path, err);
- DRM_DEBUG_DRIVER("uC fw fetch status FAIL; err %d, fw %p, obj %p\n",
- err, fw, uc_fw->obj);
-
- release_firmware(fw); /* OK even if fw is NULL */
- uc_fw->fetch_status = INTEL_UC_FIRMWARE_FAIL;
+ intel_guc_init_early(&dev_priv->guc);
}
void intel_uc_init_fw(struct drm_i915_private *dev_priv)
{
- fetch_uc_fw(dev_priv, &dev_priv->huc.fw);
- fetch_uc_fw(dev_priv, &dev_priv->guc.fw);
+ intel_uc_fw_fetch(dev_priv, &dev_priv->huc.fw);
+ intel_uc_fw_fetch(dev_priv, &dev_priv->guc.fw);
}
void intel_uc_fini_fw(struct drm_i915_private *dev_priv)
{
- __intel_uc_fw_fini(&dev_priv->guc.fw);
- __intel_uc_fw_fini(&dev_priv->huc.fw);
+ intel_uc_fw_fini(&dev_priv->guc.fw);
+ intel_uc_fw_fini(&dev_priv->huc.fw);
}
-static inline i915_reg_t guc_send_reg(struct intel_guc *guc, u32 i)
-{
- GEM_BUG_ON(!guc->send_regs.base);
- GEM_BUG_ON(!guc->send_regs.count);
- GEM_BUG_ON(i >= guc->send_regs.count);
-
- return _MMIO(guc->send_regs.base + 4 * i);
-}
-
-static void guc_init_send_regs(struct intel_guc *guc)
+/**
+ * intel_uc_init_mmio - setup uC MMIO access
+ *
+ * @dev_priv: device private
+ *
+ * Setup minimal state necessary for MMIO accesses later in the
+ * initialization sequence.
+ */
+void intel_uc_init_mmio(struct drm_i915_private *dev_priv)
{
- struct drm_i915_private *dev_priv = guc_to_i915(guc);
- enum forcewake_domains fw_domains = 0;
- unsigned int i;
-
- guc->send_regs.base = i915_mmio_reg_offset(SOFT_SCRATCH(0));
- guc->send_regs.count = SOFT_SCRATCH_COUNT - 1;
-
- for (i = 0; i < guc->send_regs.count; i++) {
- fw_domains |= intel_uncore_forcewake_for_reg(dev_priv,
- guc_send_reg(guc, i),
- FW_REG_READ | FW_REG_WRITE);
- }
- guc->send_regs.fw_domains = fw_domains;
+ intel_guc_init_send_regs(&dev_priv->guc);
}
static void guc_capture_load_err_log(struct intel_guc *guc)
{
- if (!guc->log.vma || i915.guc_log_level < 0)
+ if (!guc->log.vma || i915_modparams.guc_log_level < 0)
return;
if (!guc->load_err_log)
@@ -309,8 +132,6 @@ static int guc_enable_communication(struct intel_guc *guc)
{
struct drm_i915_private *dev_priv = guc_to_i915(guc);
- guc_init_send_regs(guc);
-
if (HAS_GUC_CT(dev_priv))
return intel_guc_enable_ct(guc);
@@ -333,7 +154,7 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
struct intel_guc *guc = &dev_priv->guc;
int ret, attempts;
- if (!i915.enable_guc_loading)
+ if (!i915_modparams.enable_guc_loading)
return 0;
guc_disable_communication(guc);
@@ -342,7 +163,7 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
/* We need to notify the guc whenever we change the GGTT */
i915_ggtt_enable_guc(dev_priv);
- if (i915.enable_guc_submission) {
+ if (i915_modparams.enable_guc_submission) {
/*
* This is stuff we need to have available at fw load time
* if we are planning to enable submission later
@@ -374,7 +195,8 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
goto err_submission;
intel_huc_init_hw(&dev_priv->huc);
- ret = intel_guc_init_hw(&dev_priv->guc);
+ intel_guc_init_params(guc);
+ ret = intel_guc_fw_upload(guc);
if (ret == 0 || ret != -EAGAIN)
break;
@@ -390,9 +212,9 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
if (ret)
goto err_log_capture;
- intel_guc_auth_huc(dev_priv);
- if (i915.enable_guc_submission) {
- if (i915.guc_log_level >= 0)
+ intel_huc_auth(&dev_priv->huc);
+ if (i915_modparams.enable_guc_submission) {
+ if (i915_modparams.guc_log_level >= 0)
gen9_enable_guc_interrupts(dev_priv);
ret = i915_guc_submission_enable(dev_priv);
@@ -400,6 +222,12 @@ int intel_uc_init_hw(struct drm_i915_private *dev_priv)
goto err_interrupts;
}
+ dev_info(dev_priv->drm.dev, "GuC %s (firmware %s [version %u.%u])\n",
+ i915_modparams.enable_guc_submission ? "submission enabled" :
+ "loaded",
+ guc->fw.path,
+ guc->fw.major_ver_found, guc->fw.minor_ver_found);
+
return 0;
/*
@@ -417,24 +245,26 @@ err_interrupts:
err_log_capture:
guc_capture_load_err_log(guc);
err_submission:
- if (i915.enable_guc_submission)
+ if (i915_modparams.enable_guc_submission)
i915_guc_submission_fini(dev_priv);
err_guc:
i915_ggtt_disable_guc(dev_priv);
- DRM_ERROR("GuC init failed\n");
- if (i915.enable_guc_loading > 1 || i915.enable_guc_submission > 1)
+ if (i915_modparams.enable_guc_loading > 1 ||
+ i915_modparams.enable_guc_submission > 1) {
+ DRM_ERROR("GuC init failed. Firmware loading disabled.\n");
ret = -EIO;
- else
+ } else {
+ DRM_NOTE("GuC init failed. Firmware loading disabled.\n");
ret = 0;
+ }
- if (i915.enable_guc_submission) {
- i915.enable_guc_submission = 0;
+ if (i915_modparams.enable_guc_submission) {
+ i915_modparams.enable_guc_submission = 0;
DRM_NOTE("Falling back from GuC submission to execlist mode\n");
}
- i915.enable_guc_loading = 0;
- DRM_NOTE("GuC firmware loading disabled\n");
+ i915_modparams.enable_guc_loading = 0;
return ret;
}
@@ -443,97 +273,18 @@ void intel_uc_fini_hw(struct drm_i915_private *dev_priv)
{
guc_free_load_err_log(&dev_priv->guc);
- if (!i915.enable_guc_loading)
+ if (!i915_modparams.enable_guc_loading)
return;
- if (i915.enable_guc_submission)
+ if (i915_modparams.enable_guc_submission)
i915_guc_submission_disable(dev_priv);
guc_disable_communication(&dev_priv->guc);
- if (i915.enable_guc_submission) {
+ if (i915_modparams.enable_guc_submission) {
gen9_disable_guc_interrupts(dev_priv);
i915_guc_submission_fini(dev_priv);
}
i915_ggtt_disable_guc(dev_priv);
}
-
-int intel_guc_send_nop(struct intel_guc *guc, const u32 *action, u32 len)
-{
- WARN(1, "Unexpected send: action=%#x\n", *action);
- return -ENODEV;
-}
-
-/*
- * This function implements the MMIO based host to GuC interface.
- */
-int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len)
-{
- struct drm_i915_private *dev_priv = guc_to_i915(guc);
- u32 status;
- int i;
- int ret;
-
- GEM_BUG_ON(!len);
- GEM_BUG_ON(len > guc->send_regs.count);
-
- /* If CT is available, we expect to use MMIO only during init/fini */
- GEM_BUG_ON(HAS_GUC_CT(dev_priv) &&
- *action != INTEL_GUC_ACTION_REGISTER_COMMAND_TRANSPORT_BUFFER &&
- *action != INTEL_GUC_ACTION_DEREGISTER_COMMAND_TRANSPORT_BUFFER);
-
- mutex_lock(&guc->send_mutex);
- intel_uncore_forcewake_get(dev_priv, guc->send_regs.fw_domains);
-
- for (i = 0; i < len; i++)
- I915_WRITE(guc_send_reg(guc, i), action[i]);
-
- POSTING_READ(guc_send_reg(guc, i - 1));
-
- intel_guc_notify(guc);
-
- /*
- * No GuC command should ever take longer than 10ms.
- * Fast commands should still complete in 10us.
- */
- ret = __intel_wait_for_register_fw(dev_priv,
- guc_send_reg(guc, 0),
- INTEL_GUC_RECV_MASK,
- INTEL_GUC_RECV_MASK,
- 10, 10, &status);
- if (status != INTEL_GUC_STATUS_SUCCESS) {
- /*
- * Either the GuC explicitly returned an error (which
- * we convert to -EIO here) or no response at all was
- * received within the timeout limit (-ETIMEDOUT)
- */
- if (ret != -ETIMEDOUT)
- ret = -EIO;
-
- DRM_WARN("INTEL_GUC_SEND: Action 0x%X failed;"
- " ret=%d status=0x%08X response=0x%08X\n",
- action[0], ret, status, I915_READ(SOFT_SCRATCH(15)));
- }
-
- intel_uncore_forcewake_put(dev_priv, guc->send_regs.fw_domains);
- mutex_unlock(&guc->send_mutex);
-
- return ret;
-}
-
-int intel_guc_sample_forcewake(struct intel_guc *guc)
-{
- struct drm_i915_private *dev_priv = guc_to_i915(guc);
- u32 action[2];
-
- action[0] = INTEL_GUC_ACTION_SAMPLE_FORCEWAKE;
- /* WaRsDisableCoarsePowerGating:skl,bxt */
- if (!intel_enable_rc6() || NEEDS_WaRsDisableCoarsePowerGating(dev_priv))
- action[1] = 0;
- else
- /* bit 0 and 1 are for Render and Media domain separately */
- action[1] = GUC_FORCEWAKE_RENDER | GUC_FORCEWAKE_MEDIA;
-
- return intel_guc_send(guc, action, ARRAY_SIZE(action));
-}