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drm/i915: Split the ringbuffers from the rings (2/3) 

This refactoring has been performed using the following Coccinelle
semantic script:

    @@
    struct intel_engine_cs r;
    @@
    (
    - (r).obj
    + r.buffer->obj
    |
    - (r).virtual_start
    + r.buffer->virtual_start
    |
    - (r).head
    + r.buffer->head
    |
    - (r).tail
    + r.buffer->tail
    |
    - (r).space
    + r.buffer->space
    |
    - (r).size
    + r.buffer->size
    |
    - (r).effective_size
    + r.buffer->effective_size
    |
    - (r).last_retired_head
    + r.buffer->last_retired_head
    )

    @@
    struct intel_engine_cs *r;
    @@
    (
    - (r)->obj
    + r->buffer->obj
    |
    - (r)->virtual_start
    + r->buffer->virtual_start
    |
    - (r)->head
    + r->buffer->head
    |
    - (r)->tail
    + r->buffer->tail
    |
    - (r)->space
    + r->buffer->space
    |
    - (r)->size
    + r->buffer->size
    |
    - (r)->effective_size
    + r->buffer->effective_size
    |
    - (r)->last_retired_head
    + r->buffer->last_retired_head
    )

    @@
    expression E;
    @@
    (
    - LP_RING(E)->obj
    + LP_RING(E)->buffer->obj
    |
    - LP_RING(E)->virtual_start
    + LP_RING(E)->buffer->virtual_start
    |
    - LP_RING(E)->head
    + LP_RING(E)->buffer->head
    |
    - LP_RING(E)->tail
    + LP_RING(E)->buffer->tail
    |
    - LP_RING(E)->space
    + LP_RING(E)->buffer->space
    |
    - LP_RING(E)->size
    + LP_RING(E)->buffer->size
    |
    - LP_RING(E)->effective_size
    + LP_RING(E)->buffer->effective_size
    |
    - LP_RING(E)->last_retired_head
    + LP_RING(E)->buffer->last_retired_head
    )

Note: On top of this this patch also removes the now unused ringbuffer
fields in intel_engine_cs.

Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
[danvet: Add note about fixup patch included here.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Oscar Mateo 2014-05-22 14:13:35 +01:00 committed by Daniel Vetter
parent 8ee149756e
commit ee1b1e5ef3
6 changed files with 75 additions and 92 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/gpu/drm/i915/i915_dma.c
View File

@ -64,7 +64,7 @@
* has access to the ring.
*/
#define RING_LOCK_TEST_WITH_RETURN(dev, file) do { \
if (LP_RING(dev->dev_private)->obj == NULL) \
if (LP_RING(dev->dev_private)->buffer->obj == NULL) \
LOCK_TEST_WITH_RETURN(dev, file); \
} while (0)
@ -149,17 +149,17 @@ void i915_kernel_lost_context(struct drm_device * dev)
if (drm_core_check_feature(dev, DRIVER_MODESET))
return;
ring->head = I915_READ_HEAD(ring) & HEAD_ADDR;
ring->tail = I915_READ_TAIL(ring) & TAIL_ADDR;
ring->space = ring->head - (ring->tail + I915_RING_FREE_SPACE);
if (ring->space < 0)
ring->space += ring->size;
ring->buffer->head = I915_READ_HEAD(ring) & HEAD_ADDR;
ring->buffer->tail = I915_READ_TAIL(ring) & TAIL_ADDR;
ring->buffer->space = ring->buffer->head - (ring->buffer->tail + I915_RING_FREE_SPACE);
if (ring->buffer->space < 0)
ring->buffer->space += ring->buffer->size;
if (!dev->primary->master)
return;
master_priv = dev->primary->master->driver_priv;
if (ring->head == ring->tail && master_priv->sarea_priv)
if (ring->buffer->head == ring->buffer->tail && master_priv->sarea_priv)
master_priv->sarea_priv->perf_boxes |= I915_BOX_RING_EMPTY;
}
@ -202,7 +202,7 @@ static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init)
}
if (init->ring_size != 0) {
if (LP_RING(dev_priv)->obj != NULL) {
if (LP_RING(dev_priv)->buffer->obj != NULL) {
i915_dma_cleanup(dev);
DRM_ERROR("Client tried to initialize ringbuffer in "
"GEM mode\n");
@ -239,7 +239,7 @@ static int i915_dma_resume(struct drm_device * dev)
DRM_DEBUG_DRIVER("%s\n", __func__);
if (ring->virtual_start == NULL) {
if (ring->buffer->virtual_start == NULL) {
DRM_ERROR("can not ioremap virtual address for"
" ring buffer\n");
return -ENOMEM;
@ -361,7 +361,7 @@ static int i915_emit_cmds(struct drm_device * dev, int *buffer, int dwords)
struct drm_i915_private *dev_priv = dev->dev_private;
int i, ret;
if ((dwords+1) * sizeof(int) >= LP_RING(dev_priv)->size - 8)
if ((dwords+1) * sizeof(int) >= LP_RING(dev_priv)->buffer->size - 8)
return -EINVAL;
for (i = 0; i < dwords;) {
@ -824,7 +824,7 @@ static int i915_irq_emit(struct drm_device *dev, void *data,
if (drm_core_check_feature(dev, DRIVER_MODESET))
return -ENODEV;
if (!dev_priv || !LP_RING(dev_priv)->virtual_start) {
if (!dev_priv || !LP_RING(dev_priv)->buffer->virtual_start) {
DRM_ERROR("called with no initialization\n");
return -EINVAL;
}

2
drivers/gpu/drm/i915/i915_gem.c
View File

@ -2523,7 +2523,7 @@ i915_gem_retire_requests_ring(struct intel_engine_cs *ring)
* of tail of the request to update the last known position
* of the GPU head.
*/
ring->last_retired_head = request->tail;
ring->buffer->last_retired_head = request->tail;
i915_gem_free_request(request);
}

6
drivers/gpu/drm/i915/i915_gpu_error.c
View File

@ -825,8 +825,8 @@ static void i915_record_ring_state(struct drm_device *dev,
ering->hws = I915_READ(mmio);
}
ering->cpu_ring_head = ring->head;
ering->cpu_ring_tail = ring->tail;
ering->cpu_ring_head = ring->buffer->head;
ering->cpu_ring_tail = ring->buffer->tail;
ering->hangcheck_score = ring->hangcheck.score;
ering->hangcheck_action = ring->hangcheck.action;
@ -930,7 +930,7 @@ static void i915_gem_record_rings(struct drm_device *dev,
}
error->ring[i].ringbuffer =
i915_error_ggtt_object_create(dev_priv, ring->obj);
i915_error_ggtt_object_create(dev_priv, ring->buffer->obj);
if (ring->status_page.obj)
error->ring[i].hws_page =

8
drivers/gpu/drm/i915/i915_irq.c
View File

@ -1219,7 +1219,7 @@ static void ironlake_rps_change_irq_handler(struct drm_device *dev)
static void notify_ring(struct drm_device *dev,
struct intel_engine_cs *ring)
{
if (ring->obj == NULL)
if (ring->buffer->obj == NULL)
return;
trace_i915_gem_request_complete(ring);
@ -2837,10 +2837,10 @@ semaphore_waits_for(struct intel_engine_cs *ring, u32 *seqno)
* our ring is smaller than what the hardware (and hence
* HEAD_ADDR) allows. Also handles wrap-around.
*/
head &= ring->size - 1;
head &= ring->buffer->size - 1;
/* This here seems to blow up */
cmd = ioread32(ring->virtual_start + head);
cmd = ioread32(ring->buffer->virtual_start + head);
if (cmd == ipehr)
break;
@ -2850,7 +2850,7 @@ semaphore_waits_for(struct intel_engine_cs *ring, u32 *seqno)
if (!i)
return NULL;
*seqno = ioread32(ring->virtual_start + head + 4) + 1;
*seqno = ioread32(ring->buffer->virtual_start + head + 4) + 1;
return semaphore_wait_to_signaller_ring(ring, ipehr);
}

102
drivers/gpu/drm/i915/intel_ringbuffer.c
View File

@ -50,7 +50,7 @@ static inline int __ring_space(int head, int tail, int size)
static inline int ring_space(struct intel_engine_cs *ring)
{
return __ring_space(ring->head & HEAD_ADDR, ring->tail, ring->size);
return __ring_space(ring->buffer->head & HEAD_ADDR, ring->buffer->tail, ring->buffer->size);
}
static bool intel_ring_stopped(struct intel_engine_cs *ring)
@ -61,10 +61,10 @@ static bool intel_ring_stopped(struct intel_engine_cs *ring)
void __intel_ring_advance(struct intel_engine_cs *ring)
{
ring->tail &= ring->size - 1;
ring->buffer->tail &= ring->buffer->size - 1;
if (intel_ring_stopped(ring))
return;
ring->write_tail(ring, ring->tail);
ring->write_tail(ring, ring->buffer->tail);
}
static int
@ -481,7 +481,7 @@ static int init_ring_common(struct intel_engine_cs *ring)
{
struct drm_device *dev = ring->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_gem_object *obj = ring->obj;
struct drm_i915_gem_object *obj = ring->buffer->obj;
int ret = 0;
gen6_gt_force_wake_get(dev_priv, FORCEWAKE_ALL);
@ -520,7 +520,7 @@ static int init_ring_common(struct intel_engine_cs *ring)
* register values. */
I915_WRITE_START(ring, i915_gem_obj_ggtt_offset(obj));
I915_WRITE_CTL(ring,
((ring->size - PAGE_SIZE) & RING_NR_PAGES)
((ring->buffer->size - PAGE_SIZE) & RING_NR_PAGES)
| RING_VALID);
/* If the head is still not zero, the ring is dead */
@ -540,10 +540,10 @@ static int init_ring_common(struct intel_engine_cs *ring)
if (!drm_core_check_feature(ring->dev, DRIVER_MODESET))
i915_kernel_lost_context(ring->dev);
else {
ring->head = I915_READ_HEAD(ring);
ring->tail = I915_READ_TAIL(ring) & TAIL_ADDR;
ring->space = ring_space(ring);
ring->last_retired_head = -1;
ring->buffer->head = I915_READ_HEAD(ring);
ring->buffer->tail = I915_READ_TAIL(ring) & TAIL_ADDR;
ring->buffer->space = ring_space(ring);
ring->buffer->last_retired_head = -1;
}
memset(&ring->hangcheck, 0, sizeof(ring->hangcheck));
@ -1382,14 +1382,14 @@ static int allocate_ring_buffer(struct intel_engine_cs *ring)
struct drm_i915_gem_object *obj;
int ret;
if (ring->obj)
if (ring->buffer->obj)
return 0;
obj = NULL;
if (!HAS_LLC(dev))
obj = i915_gem_object_create_stolen(dev, ring->size);
obj = i915_gem_object_create_stolen(dev, ring->buffer->size);
if (obj == NULL)
obj = i915_gem_alloc_object(dev, ring->size);
obj = i915_gem_alloc_object(dev, ring->buffer->size);
if (obj == NULL)
return -ENOMEM;
@ -1401,15 +1401,15 @@ static int allocate_ring_buffer(struct intel_engine_cs *ring)
if (ret)
goto err_unpin;
ring->virtual_start =
ring->buffer->virtual_start =
ioremap_wc(dev_priv->gtt.mappable_base + i915_gem_obj_ggtt_offset(obj),
ring->size);
if (ring->virtual_start == NULL) {
ring->buffer->size);
if (ring->buffer->virtual_start == NULL) {
ret = -EINVAL;
goto err_unpin;
}
ring->obj = obj;
ring->buffer->obj = obj;
return 0;
err_unpin:
@ -1435,7 +1435,7 @@ static int intel_init_ring_buffer(struct drm_device *dev,
ring->dev = dev;
INIT_LIST_HEAD(&ring->active_list);
INIT_LIST_HEAD(&ring->request_list);
ring->size = 32 * PAGE_SIZE;
ring->buffer->size = 32 * PAGE_SIZE;
memset(ring->semaphore.sync_seqno, 0, sizeof(ring->semaphore.sync_seqno));
init_waitqueue_head(&ring->irq_queue);
@ -1461,9 +1461,9 @@ static int intel_init_ring_buffer(struct drm_device *dev,
* the TAIL pointer points to within the last 2 cachelines
* of the buffer.
*/
ring->effective_size = ring->size;
ring->buffer->effective_size = ring->buffer->size;
if (IS_I830(dev) || IS_845G(dev))
ring->effective_size -= 2 * CACHELINE_BYTES;
ring->buffer->effective_size -= 2 * CACHELINE_BYTES;
ret = i915_cmd_parser_init_ring(ring);
if (ret)
@ -1485,17 +1485,17 @@ void intel_cleanup_ring_buffer(struct intel_engine_cs *ring)
{
struct drm_i915_private *dev_priv = to_i915(ring->dev);
if (ring->obj == NULL)
if (ring->buffer->obj == NULL)
return;
intel_stop_ring_buffer(ring);
WARN_ON((I915_READ_MODE(ring) & MODE_IDLE) == 0);
iounmap(ring->virtual_start);
iounmap(ring->buffer->virtual_start);
i915_gem_object_ggtt_unpin(ring->obj);
drm_gem_object_unreference(&ring->obj->base);
ring->obj = NULL;
i915_gem_object_ggtt_unpin(ring->buffer->obj);
drm_gem_object_unreference(&ring->buffer->obj->base);
ring->buffer->obj = NULL;
ring->preallocated_lazy_request = NULL;
ring->outstanding_lazy_seqno = 0;
@ -1516,17 +1516,17 @@ static int intel_ring_wait_request(struct intel_engine_cs *ring, int n)
u32 seqno = 0;
int ret;
if (ring->last_retired_head != -1) {
ring->head = ring->last_retired_head;
ring->last_retired_head = -1;
if (ring->buffer->last_retired_head != -1) {
ring->buffer->head = ring->buffer->last_retired_head;
ring->buffer->last_retired_head = -1;
ring->space = ring_space(ring);
if (ring->space >= n)
ring->buffer->space = ring_space(ring);
if (ring->buffer->space >= n)
return 0;
}
list_for_each_entry(request, &ring->request_list, list) {
if (__ring_space(request->tail, ring->tail, ring->size) >= n) {
if (__ring_space(request->tail, ring->buffer->tail, ring->buffer->size) >= n) {
seqno = request->seqno;
break;
}
@ -1540,10 +1540,10 @@ static int intel_ring_wait_request(struct intel_engine_cs *ring, int n)
return ret;
i915_gem_retire_requests_ring(ring);
ring->head = ring->last_retired_head;
ring->last_retired_head = -1;
ring->buffer->head = ring->buffer->last_retired_head;
ring->buffer->last_retired_head = -1;
ring->space = ring_space(ring);
ring->buffer->space = ring_space(ring);
return 0;
}
@ -1570,9 +1570,9 @@ static int ring_wait_for_space(struct intel_engine_cs *ring, int n)
trace_i915_ring_wait_begin(ring);
do {
ring->head = I915_READ_HEAD(ring);
ring->space = ring_space(ring);
if (ring->space >= n) {
ring->buffer->head = I915_READ_HEAD(ring);
ring->buffer->space = ring_space(ring);
if (ring->buffer->space >= n) {
ret = 0;
break;
}
@ -1608,21 +1608,21 @@ static int ring_wait_for_space(struct intel_engine_cs *ring, int n)
static int intel_wrap_ring_buffer(struct intel_engine_cs *ring)
{
uint32_t __iomem *virt;
int rem = ring->size - ring->tail;
int rem = ring->buffer->size - ring->buffer->tail;
if (ring->space < rem) {
if (ring->buffer->space < rem) {
int ret = ring_wait_for_space(ring, rem);
if (ret)
return ret;
}
virt = ring->virtual_start + ring->tail;
virt = ring->buffer->virtual_start + ring->buffer->tail;
rem /= 4;
while (rem--)
iowrite32(MI_NOOP, virt++);
ring->tail = 0;
ring->space = ring_space(ring);
ring->buffer->tail = 0;
ring->buffer->space = ring_space(ring);
return 0;
}
@ -1674,13 +1674,13 @@ static int __intel_ring_prepare(struct intel_engine_cs *ring,
{
int ret;
if (unlikely(ring->tail + bytes > ring->effective_size)) {
if (unlikely(ring->buffer->tail + bytes > ring->buffer->effective_size)) {
ret = intel_wrap_ring_buffer(ring);
if (unlikely(ret))
return ret;
}
if (unlikely(ring->space < bytes)) {
if (unlikely(ring->buffer->space < bytes)) {
ret = ring_wait_for_space(ring, bytes);
if (unlikely(ret))
return ret;
@ -1709,14 +1709,14 @@ int intel_ring_begin(struct intel_engine_cs *ring,
if (ret)
return ret;
ring->space -= num_dwords * sizeof(uint32_t);
ring->buffer->space -= num_dwords * sizeof(uint32_t);
return 0;
}
/* Align the ring tail to a cacheline boundary */
int intel_ring_cacheline_align(struct intel_engine_cs *ring)
{
int num_dwords = (ring->tail & (CACHELINE_BYTES - 1)) / sizeof(uint32_t);
int num_dwords = (ring->buffer->tail & (CACHELINE_BYTES - 1)) / sizeof(uint32_t);
int ret;
if (num_dwords == 0)
@ -2094,13 +2094,13 @@ int intel_render_ring_init_dri(struct drm_device *dev, u64 start, u32 size)
INIT_LIST_HEAD(&ring->active_list);
INIT_LIST_HEAD(&ring->request_list);
ring->size = size;
ring->effective_size = ring->size;
ring->buffer->size = size;
ring->buffer->effective_size = ring->buffer->size;
if (IS_I830(ring->dev) || IS_845G(ring->dev))
ring->effective_size -= 2 * CACHELINE_BYTES;
ring->buffer->effective_size -= 2 * CACHELINE_BYTES;
ring->virtual_start = ioremap_wc(start, size);
if (ring->virtual_start == NULL) {
ring->buffer->virtual_start = ioremap_wc(start, size);
if (ring->buffer->virtual_start == NULL) {
DRM_ERROR("can not ioremap virtual address for"
" ring buffer\n");
ret = -ENOMEM;
@ -2116,7 +2116,7 @@ int intel_render_ring_init_dri(struct drm_device *dev, u64 start, u32 size)
return 0;
err_vstart:
iounmap(ring->virtual_start);
iounmap(ring->buffer->virtual_start);
err_ringbuf:
kfree(ringbuf);
ring->buffer = NULL;

27
drivers/gpu/drm/i915/intel_ringbuffer.h
View File

@ -91,28 +91,11 @@ struct intel_engine_cs {
#define I915_NUM_RINGS 5
#define LAST_USER_RING (VECS + 1)
u32 mmio_base;
void __iomem *virtual_start;
struct drm_device *dev;
struct drm_i915_gem_object *obj;
struct intel_ringbuffer *buffer;
u32 head;
u32 tail;
int space;
int size;
int effective_size;
struct intel_hw_status_page status_page;
/** We track the position of the requests in the ring buffer, and
* when each is retired we increment last_retired_head as the GPU
* must have finished processing the request and so we know we
* can advance the ringbuffer up to that position.
*
* last_retired_head is set to -1 after the value is consumed so
* we can detect new retirements.
*/
u32 last_retired_head;
unsigned irq_refcount; /* protected by dev_priv->irq_lock */
u32 irq_enable_mask; /* bitmask to enable ring interrupt */
u32 trace_irq_seqno;
@ -239,7 +222,7 @@ struct intel_engine_cs {
static inline bool
intel_ring_initialized(struct intel_engine_cs *ring)
{
return ring->buffer && ring->obj;
return ring->buffer && ring->buffer->obj;
}
static inline unsigned
@ -310,12 +293,12 @@ int __must_check intel_ring_cacheline_align(struct intel_engine_cs *ring);
static inline void intel_ring_emit(struct intel_engine_cs *ring,
u32 data)
{
iowrite32(data, ring->virtual_start + ring->tail);
ring->tail += 4;
iowrite32(data, ring->buffer->virtual_start + ring->buffer->tail);
ring->buffer->tail += 4;
}
static inline void intel_ring_advance(struct intel_engine_cs *ring)
{
ring->tail &= ring->size - 1;
ring->buffer->tail &= ring->buffer->size - 1;
}
void __intel_ring_advance(struct intel_engine_cs *ring);
@ -335,7 +318,7 @@ void intel_ring_setup_status_page(struct intel_engine_cs *ring);
static inline u32 intel_ring_get_tail(struct intel_engine_cs *ring)
{
return ring->tail;
return ring->buffer->tail;
}
static inline u32 intel_ring_get_seqno(struct intel_engine_cs *ring)