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drm/i915: add a new BSD ring buffer for Sandybridge

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This ring buffer is used for video decoding/encoding on Sandybridge.

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Xiang, Haihao
2010-09-19 14:40:43 +01:00
committed by Chris Wilson
parent a3f07cd53e
commit 881f47b647
4 changed files with 159 additions and 8 deletions
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124
drivers/gpu/drm/i915/intel_ringbuffer.c
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@ -32,6 +32,7 @@
#include "i915_drv.h"
#include "i915_drm.h"
#include "i915_trace.h"
#include "intel_drv.h"
static u32 i915_gem_get_seqno(struct drm_device *dev)
{
@ -865,6 +866,124 @@ static struct intel_ring_buffer bsd_ring = {
.map = {0,}
};
static void gen6_bsd_setup_status_page(struct drm_device *dev,
struct intel_ring_buffer *ring)
{
drm_i915_private_t *dev_priv = dev->dev_private;
I915_WRITE(GEN6_BSD_HWS_PGA, ring->status_page.gfx_addr);
I915_READ(GEN6_BSD_HWS_PGA);
}
static inline unsigned int gen6_bsd_ring_get_head(struct drm_device *dev,
struct intel_ring_buffer *ring)
{
drm_i915_private_t *dev_priv = dev->dev_private;
return I915_READ(GEN6_BSD_RING_HEAD) & HEAD_ADDR;
}
static inline unsigned int gen6_bsd_ring_get_tail(struct drm_device *dev,
struct intel_ring_buffer *ring)
{
drm_i915_private_t *dev_priv = dev->dev_private;
return I915_READ(GEN6_BSD_RING_TAIL) & TAIL_ADDR;
}
static inline void gen6_bsd_ring_set_tail(struct drm_device *dev,
u32 value)
{
drm_i915_private_t *dev_priv = dev->dev_private;
/* Every tail move must follow the sequence below */
I915_WRITE(GEN6_BSD_SLEEP_PSMI_CONTROL,
GEN6_BSD_SLEEP_PSMI_CONTROL_RC_ILDL_MESSAGE_MODIFY_MASK |
GEN6_BSD_SLEEP_PSMI_CONTROL_RC_ILDL_MESSAGE_DISABLE);
I915_WRITE(GEN6_BSD_RNCID, 0x0);
if (wait_for((I915_READ(GEN6_BSD_SLEEP_PSMI_CONTROL) &
GEN6_BSD_SLEEP_PSMI_CONTROL_IDLE_INDICATOR) == 0,
50))
DRM_ERROR("timed out waiting for IDLE Indicator\n");
I915_WRITE(GEN6_BSD_RING_TAIL, value);
I915_WRITE(GEN6_BSD_SLEEP_PSMI_CONTROL,
GEN6_BSD_SLEEP_PSMI_CONTROL_RC_ILDL_MESSAGE_MODIFY_MASK |
GEN6_BSD_SLEEP_PSMI_CONTROL_RC_ILDL_MESSAGE_ENABLE);
}
static inline unsigned int gen6_bsd_ring_get_active_head(struct drm_device *dev,
struct intel_ring_buffer *ring)
{
drm_i915_private_t *dev_priv = dev->dev_private;
return I915_READ(GEN6_BSD_RING_ACTHD);
}
static void gen6_bsd_ring_flush(struct drm_device *dev,
struct intel_ring_buffer *ring,
u32 invalidate_domains,
u32 flush_domains)
{
intel_ring_begin(dev, ring, 4);
intel_ring_emit(dev, ring, MI_FLUSH_DW);
intel_ring_emit(dev, ring, 0);
intel_ring_emit(dev, ring, 0);
intel_ring_emit(dev, ring, 0);
intel_ring_advance(dev, ring);
}
static int
gen6_bsd_ring_dispatch_gem_execbuffer(struct drm_device *dev,
struct intel_ring_buffer *ring,
struct drm_i915_gem_execbuffer2 *exec,
struct drm_clip_rect *cliprects,
uint64_t exec_offset)
{
uint32_t exec_start;
exec_start = (uint32_t) exec_offset + exec->batch_start_offset;
intel_ring_begin(dev, ring, 2);
intel_ring_emit(dev, ring, MI_BATCH_BUFFER_START | MI_BATCH_NON_SECURE_I965); /* bit0-7 is the length on GEN6+ */
intel_ring_emit(dev, ring, exec_start);
intel_ring_advance(dev, ring);
return 0;
}
/* ring buffer for Video Codec for Gen6+ */
static struct intel_ring_buffer gen6_bsd_ring = {
.name = "gen6 bsd ring",
.id = RING_BSD,
.regs = {
.ctl = GEN6_BSD_RING_CTL,
.head = GEN6_BSD_RING_HEAD,
.tail = GEN6_BSD_RING_TAIL,
.start = GEN6_BSD_RING_START
},
.size = 32 * PAGE_SIZE,
.alignment = PAGE_SIZE,
.virtual_start = NULL,
.dev = NULL,
.gem_object = NULL,
.head = 0,
.tail = 0,
.space = 0,
.user_irq_refcount = 0,
.irq_gem_seqno = 0,
.waiting_gem_seqno = 0,
.setup_status_page = gen6_bsd_setup_status_page,
.init = init_bsd_ring,
.get_head = gen6_bsd_ring_get_head,
.get_tail = gen6_bsd_ring_get_tail,
.set_tail = gen6_bsd_ring_set_tail,
.get_active_head = gen6_bsd_ring_get_active_head,
.flush = gen6_bsd_ring_flush,
.add_request = bsd_ring_add_request,
.get_gem_seqno = bsd_ring_get_gem_seqno,
.user_irq_get = bsd_ring_get_user_irq,
.user_irq_put = bsd_ring_put_user_irq,
.dispatch_gem_execbuffer = gen6_bsd_ring_dispatch_gem_execbuffer,
.status_page = {NULL, 0, NULL},
.map = {0,}
};
int intel_init_render_ring_buffer(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
@ -885,7 +1004,10 @@ int intel_init_bsd_ring_buffer(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
dev_priv->bsd_ring = bsd_ring;
if (IS_GEN6(dev))
dev_priv->bsd_ring = gen6_bsd_ring;
else
dev_priv->bsd_ring = bsd_ring;
return intel_init_ring_buffer(dev, &dev_priv->bsd_ring);
}