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drm/i915/guc: Add GuC ADS (Addition Data Structure) - allocation 

The GuC firmware uses this for various purposes. The ADS itself is
a chunk of memory created by driver to share with GuC. Its members
are usually addresses telling where GuC to access them, including
things like scheduler policies, register list that will be saved
and restored during reset etc.

This is the first patch of a series to enable GuC ADS. For now, we
only create the ADS obj whilst keep it disabled.

v1: remove dead code checking return of kmap_atomic (Chris Wilson)
v2: use kmap instead of the atomic version of it.

Signed-off-by: Alex Dai <yu.dai@intel.com>
Reviewed-by: Dave Gordon <david.s.gordon@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1450468812-4882-3-git-send-email-yu.dai@intel.com
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Alex Dai 2015-12-18 12:00:09 -08:00 committed by Daniel Vetter
parent 95a66f7e71
commit 68371a954c
4 changed files with 78 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/drm/i915/i915_guc_reg.h
View File

@ -40,6 +40,7 @@
#define GS_MIA_CORE_STATE (1 << GS_MIA_SHIFT)
#define SOFT_SCRATCH(n) _MMIO(0xc180 + (n) * 4)
#define SOFT_SCRATCH_COUNT 16
#define UOS_RSA_SCRATCH(i) _MMIO(0xc200 + (i) * 4)
#define UOS_RSA_SCRATCH_MAX_COUNT 64

45
drivers/gpu/drm/i915/i915_guc_submission.c
View File

@ -839,6 +839,46 @@ static void guc_create_log(struct intel_guc *guc)
guc->log_flags = (offset << GUC_LOG_BUF_ADDR_SHIFT) | flags;
}
static void guc_create_ads(struct intel_guc *guc)
{
struct drm_i915_private *dev_priv = guc_to_i915(guc);
struct drm_i915_gem_object *obj;
struct guc_ads *ads;
struct intel_engine_cs *ring;
struct page *page;
u32 size, i;
/* The ads obj includes the struct itself and buffers passed to GuC */
size = sizeof(struct guc_ads);
obj = guc->ads_obj;
if (!obj) {
obj = gem_allocate_guc_obj(dev_priv->dev, PAGE_ALIGN(size));
if (!obj)
return;
guc->ads_obj = obj;
}
page = i915_gem_object_get_page(obj, 0);
ads = kmap(page);
/*
* The GuC requires a "Golden Context" when it reinitialises
* engines after a reset. Here we use the Render ring default
* context, which must already exist and be pinned in the GGTT,
* so its address won't change after we've told the GuC where
* to find it.
*/
ring = &dev_priv->ring[RCS];
ads->golden_context_lrca = ring->status_page.gfx_addr;
for_each_ring(ring, dev_priv, i)
ads->eng_state_size[i] = intel_lr_context_size(ring);
kunmap(page);
}
/*
* Set up the memory resources to be shared with the GuC. At this point,
* we require just one object that can be mapped through the GGTT.
@ -865,6 +905,8 @@ int i915_guc_submission_init(struct drm_device *dev)
guc_create_log(guc);
guc_create_ads(guc);
return 0;
}
@ -903,6 +945,9 @@ void i915_guc_submission_fini(struct drm_device *dev)
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_guc *guc = &dev_priv->guc;
gem_release_guc_obj(dev_priv->guc.ads_obj);
guc->ads_obj = NULL;
gem_release_guc_obj(dev_priv->guc.log_obj);
guc->log_obj = NULL;

2
drivers/gpu/drm/i915/intel_guc.h
View File

@ -89,6 +89,8 @@ struct intel_guc {
uint32_t log_flags;
struct drm_i915_gem_object *log_obj;
struct drm_i915_gem_object *ads_obj;
struct drm_i915_gem_object *ctx_pool_obj;
struct ida ctx_ids;

31
drivers/gpu/drm/i915/intel_guc_fwif.h
View File

@ -81,11 +81,14 @@
#define GUC_CTL_CTXINFO 0
#define GUC_CTL_CTXNUM_IN16_SHIFT 0
#define GUC_CTL_BASE_ADDR_SHIFT 12
#define GUC_CTL_ARAT_HIGH 1
#define GUC_CTL_ARAT_LOW 2
#define GUC_CTL_DEVICE_INFO 3
#define GUC_CTL_GTTYPE_SHIFT 0
#define GUC_CTL_COREFAMILY_SHIFT 7
#define GUC_CTL_LOG_PARAMS 4
#define GUC_LOG_VALID (1 << 0)
#define GUC_LOG_NOTIFY_ON_HALF_FULL (1 << 1)
@ -97,9 +100,12 @@
#define GUC_LOG_ISR_PAGES 3
#define GUC_LOG_ISR_SHIFT 9
#define GUC_LOG_BUF_ADDR_SHIFT 12
#define GUC_CTL_PAGE_FAULT_CONTROL 5
#define GUC_CTL_WA 6
#define GUC_CTL_WA_UK_BY_DRIVER (1 << 3)
#define GUC_CTL_FEATURE 7
#define GUC_CTL_VCS2_ENABLED (1 << 0)
#define GUC_CTL_KERNEL_SUBMISSIONS (1 << 1)
@ -109,6 +115,7 @@
#define GUC_CTL_PREEMPTION_LOG (1 << 5)
#define GUC_CTL_ENABLE_SLPC (1 << 7)
#define GUC_CTL_RESET_ON_PREMPT_FAILURE (1 << 8)
#define GUC_CTL_DEBUG 8
#define GUC_LOG_VERBOSITY_SHIFT 0
#define GUC_LOG_VERBOSITY_LOW (0 << GUC_LOG_VERBOSITY_SHIFT)
@ -118,9 +125,19 @@
/* Verbosity range-check limits, without the shift */
#define GUC_LOG_VERBOSITY_MIN 0
#define GUC_LOG_VERBOSITY_MAX 3
#define GUC_LOG_VERBOSITY_MASK 0x0000000f
#define GUC_LOG_DESTINATION_MASK (3 << 4)
#define GUC_LOG_DISABLED (1 << 6)
#define GUC_PROFILE_ENABLED (1 << 7)
#define GUC_WQ_TRACK_ENABLED (1 << 8)
#define GUC_ADS_ENABLED (1 << 9)
#define GUC_DEBUG_RESERVED (1 << 10)
#define GUC_ADS_ADDR_SHIFT 11
#define GUC_ADS_ADDR_MASK 0xfffff800
#define GUC_CTL_RSRVD 9
#define GUC_CTL_MAX_DWORDS (GUC_CTL_RSRVD + 1)
#define GUC_CTL_MAX_DWORDS (SOFT_SCRATCH_COUNT - 2) /* [1..14] */
/**
* DOC: GuC Firmware Layout
@ -299,6 +316,18 @@ struct guc_context_desc {
#define GUC_POWER_D2 3
#define GUC_POWER_D3 4
/* GuC Additional Data Struct */
struct guc_ads {
u32 reg_state_addr;
u32 reg_state_buffer;
u32 golden_context_lrca;
u32 scheduler_policies;
u32 reserved0[3];
u32 eng_state_size[I915_NUM_RINGS];
u32 reserved2[4];
} __packed;
/* This Action will be programmed in C180 - SOFT_SCRATCH_O_REG */
enum host2guc_action {
HOST2GUC_ACTION_DEFAULT = 0x0,