diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_dma.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_dma.c | 1039 |
1 files changed, 29 insertions, 1010 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 9a7353302b3f..ecee3bcc8772 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -50,884 +50,6 @@ #include <linux/pm_runtime.h> #include <linux/oom.h> -#define LP_RING(d) (&((struct drm_i915_private *)(d))->ring[RCS]) - -#define BEGIN_LP_RING(n) \ - intel_ring_begin(LP_RING(dev_priv), (n)) - -#define OUT_RING(x) \ - intel_ring_emit(LP_RING(dev_priv), x) - -#define ADVANCE_LP_RING() \ - __intel_ring_advance(LP_RING(dev_priv)) - -/** - * Lock test for when it's just for synchronization of ring access. - * - * In that case, we don't need to do it when GEM is initialized as nobody else - * has access to the ring. - */ -#define RING_LOCK_TEST_WITH_RETURN(dev, file) do { \ - if (LP_RING(dev->dev_private)->buffer->obj == NULL) \ - LOCK_TEST_WITH_RETURN(dev, file); \ -} while (0) - -static inline u32 -intel_read_legacy_status_page(struct drm_i915_private *dev_priv, int reg) -{ - if (I915_NEED_GFX_HWS(dev_priv->dev)) - return ioread32(dev_priv->dri1.gfx_hws_cpu_addr + reg); - else - return intel_read_status_page(LP_RING(dev_priv), reg); -} - -#define READ_HWSP(dev_priv, reg) intel_read_legacy_status_page(dev_priv, reg) -#define READ_BREADCRUMB(dev_priv) READ_HWSP(dev_priv, I915_BREADCRUMB_INDEX) -#define I915_BREADCRUMB_INDEX 0x21 - -void i915_update_dri1_breadcrumb(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - struct drm_i915_master_private *master_priv; - - /* - * The dri breadcrumb update races against the drm master disappearing. - * Instead of trying to fix this (this is by far not the only ums issue) - * just don't do the update in kms mode. - */ - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return; - - if (dev->primary->master) { - master_priv = dev->primary->master->driver_priv; - if (master_priv->sarea_priv) - master_priv->sarea_priv->last_dispatch = - READ_BREADCRUMB(dev_priv); - } -} - -static void i915_write_hws_pga(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - u32 addr; - - addr = dev_priv->status_page_dmah->busaddr; - if (INTEL_INFO(dev)->gen >= 4) - addr |= (dev_priv->status_page_dmah->busaddr >> 28) & 0xf0; - I915_WRITE(HWS_PGA, addr); -} - -/** - * Frees the hardware status page, whether it's a physical address or a virtual - * address set up by the X Server. - */ -static void i915_free_hws(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - struct intel_engine_cs *ring = LP_RING(dev_priv); - - if (dev_priv->status_page_dmah) { - drm_pci_free(dev, dev_priv->status_page_dmah); - dev_priv->status_page_dmah = NULL; - } - - if (ring->status_page.gfx_addr) { - ring->status_page.gfx_addr = 0; - iounmap(dev_priv->dri1.gfx_hws_cpu_addr); - } - - /* Need to rewrite hardware status page */ - I915_WRITE(HWS_PGA, 0x1ffff000); -} - -void i915_kernel_lost_context(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - struct drm_i915_master_private *master_priv; - struct intel_engine_cs *ring = LP_RING(dev_priv); - struct intel_ringbuffer *ringbuf = ring->buffer; - - /* - * We should never lose context on the ring with modesetting - * as we don't expose it to userspace - */ - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return; - - ringbuf->head = I915_READ_HEAD(ring) & HEAD_ADDR; - ringbuf->tail = I915_READ_TAIL(ring) & TAIL_ADDR; - ringbuf->space = ringbuf->head - (ringbuf->tail + I915_RING_FREE_SPACE); - if (ringbuf->space < 0) - ringbuf->space += ringbuf->size; - - if (!dev->primary->master) - return; - - master_priv = dev->primary->master->driver_priv; - if (ringbuf->head == ringbuf->tail && master_priv->sarea_priv) - master_priv->sarea_priv->perf_boxes |= I915_BOX_RING_EMPTY; -} - -static int i915_dma_cleanup(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - int i; - - /* Make sure interrupts are disabled here because the uninstall ioctl - * may not have been called from userspace and after dev_private - * is freed, it's too late. - */ - if (dev->irq_enabled) - drm_irq_uninstall(dev); - - mutex_lock(&dev->struct_mutex); - for (i = 0; i < I915_NUM_RINGS; i++) - intel_cleanup_ring_buffer(&dev_priv->ring[i]); - mutex_unlock(&dev->struct_mutex); - - /* Clear the HWS virtual address at teardown */ - if (I915_NEED_GFX_HWS(dev)) - i915_free_hws(dev); - - return 0; -} - -static int i915_initialize(struct drm_device *dev, drm_i915_init_t *init) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv; - int ret; - - master_priv->sarea = drm_legacy_getsarea(dev); - if (master_priv->sarea) { - master_priv->sarea_priv = (drm_i915_sarea_t *) - ((u8 *)master_priv->sarea->handle + init->sarea_priv_offset); - } else { - DRM_DEBUG_DRIVER("sarea not found assuming DRI2 userspace\n"); - } - - if (init->ring_size != 0) { - if (LP_RING(dev_priv)->buffer->obj != NULL) { - i915_dma_cleanup(dev); - DRM_ERROR("Client tried to initialize ringbuffer in " - "GEM mode\n"); - return -EINVAL; - } - - ret = intel_render_ring_init_dri(dev, - init->ring_start, - init->ring_size); - if (ret) { - i915_dma_cleanup(dev); - return ret; - } - } - - dev_priv->dri1.cpp = init->cpp; - dev_priv->dri1.back_offset = init->back_offset; - dev_priv->dri1.front_offset = init->front_offset; - dev_priv->dri1.current_page = 0; - if (master_priv->sarea_priv) - master_priv->sarea_priv->pf_current_page = 0; - - /* Allow hardware batchbuffers unless told otherwise. - */ - dev_priv->dri1.allow_batchbuffer = 1; - - return 0; -} - -static int i915_dma_resume(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - struct intel_engine_cs *ring = LP_RING(dev_priv); - - DRM_DEBUG_DRIVER("%s\n", __func__); - - if (ring->buffer->virtual_start == NULL) { - DRM_ERROR("can not ioremap virtual address for" - " ring buffer\n"); - return -ENOMEM; - } - - /* Program Hardware Status Page */ - if (!ring->status_page.page_addr) { - DRM_ERROR("Can not find hardware status page\n"); - return -EINVAL; - } - DRM_DEBUG_DRIVER("hw status page @ %p\n", - ring->status_page.page_addr); - if (ring->status_page.gfx_addr != 0) - intel_ring_setup_status_page(ring); - else - i915_write_hws_pga(dev); - - DRM_DEBUG_DRIVER("Enabled hardware status page\n"); - - return 0; -} - -static int i915_dma_init(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - drm_i915_init_t *init = data; - int retcode = 0; - - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return -ENODEV; - - switch (init->func) { - case I915_INIT_DMA: - retcode = i915_initialize(dev, init); - break; - case I915_CLEANUP_DMA: - retcode = i915_dma_cleanup(dev); - break; - case I915_RESUME_DMA: - retcode = i915_dma_resume(dev); - break; - default: - retcode = -EINVAL; - break; - } - - return retcode; -} - -/* Implement basically the same security restrictions as hardware does - * for MI_BATCH_NON_SECURE. These can be made stricter at any time. - * - * Most of the calculations below involve calculating the size of a - * particular instruction. It's important to get the size right as - * that tells us where the next instruction to check is. Any illegal - * instruction detected will be given a size of zero, which is a - * signal to abort the rest of the buffer. - */ -static int validate_cmd(int cmd) -{ - switch (((cmd >> 29) & 0x7)) { - case 0x0: - switch ((cmd >> 23) & 0x3f) { - case 0x0: - return 1; /* MI_NOOP */ - case 0x4: - return 1; /* MI_FLUSH */ - default: - return 0; /* disallow everything else */ - } - break; - case 0x1: - return 0; /* reserved */ - case 0x2: - return (cmd & 0xff) + 2; /* 2d commands */ - case 0x3: - if (((cmd >> 24) & 0x1f) <= 0x18) - return 1; - - switch ((cmd >> 24) & 0x1f) { - case 0x1c: - return 1; - case 0x1d: - switch ((cmd >> 16) & 0xff) { - case 0x3: - return (cmd & 0x1f) + 2; - case 0x4: - return (cmd & 0xf) + 2; - default: - return (cmd & 0xffff) + 2; - } - case 0x1e: - if (cmd & (1 << 23)) - return (cmd & 0xffff) + 1; - else - return 1; - case 0x1f: - if ((cmd & (1 << 23)) == 0) /* inline vertices */ - return (cmd & 0x1ffff) + 2; - else if (cmd & (1 << 17)) /* indirect random */ - if ((cmd & 0xffff) == 0) - return 0; /* unknown length, too hard */ - else - return (((cmd & 0xffff) + 1) / 2) + 1; - else - return 2; /* indirect sequential */ - default: - return 0; - } - default: - return 0; - } - - return 0; -} - -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)->buffer->size - 8) - return -EINVAL; - - for (i = 0; i < dwords;) { - int sz = validate_cmd(buffer[i]); - - if (sz == 0 || i + sz > dwords) - return -EINVAL; - i += sz; - } - - ret = BEGIN_LP_RING((dwords+1)&~1); - if (ret) - return ret; - - for (i = 0; i < dwords; i++) - OUT_RING(buffer[i]); - if (dwords & 1) - OUT_RING(0); - - ADVANCE_LP_RING(); - - return 0; -} - -int -i915_emit_box(struct drm_device *dev, - struct drm_clip_rect *box, - int DR1, int DR4) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - int ret; - - if (box->y2 <= box->y1 || box->x2 <= box->x1 || - box->y2 <= 0 || box->x2 <= 0) { - DRM_ERROR("Bad box %d,%d..%d,%d\n", - box->x1, box->y1, box->x2, box->y2); - return -EINVAL; - } - - if (INTEL_INFO(dev)->gen >= 4) { - ret = BEGIN_LP_RING(4); - if (ret) - return ret; - - OUT_RING(GFX_OP_DRAWRECT_INFO_I965); - OUT_RING((box->x1 & 0xffff) | (box->y1 << 16)); - OUT_RING(((box->x2 - 1) & 0xffff) | ((box->y2 - 1) << 16)); - OUT_RING(DR4); - } else { - ret = BEGIN_LP_RING(6); - if (ret) - return ret; - - OUT_RING(GFX_OP_DRAWRECT_INFO); - OUT_RING(DR1); - OUT_RING((box->x1 & 0xffff) | (box->y1 << 16)); - OUT_RING(((box->x2 - 1) & 0xffff) | ((box->y2 - 1) << 16)); - OUT_RING(DR4); - OUT_RING(0); - } - ADVANCE_LP_RING(); - - return 0; -} - -/* XXX: Emitting the counter should really be moved to part of the IRQ - * emit. For now, do it in both places: - */ - -static void i915_emit_breadcrumb(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv; - - dev_priv->dri1.counter++; - if (dev_priv->dri1.counter > 0x7FFFFFFFUL) - dev_priv->dri1.counter = 0; - if (master_priv->sarea_priv) - master_priv->sarea_priv->last_enqueue = dev_priv->dri1.counter; - - if (BEGIN_LP_RING(4) == 0) { - OUT_RING(MI_STORE_DWORD_INDEX); - OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT); - OUT_RING(dev_priv->dri1.counter); - OUT_RING(0); - ADVANCE_LP_RING(); - } -} - -static int i915_dispatch_cmdbuffer(struct drm_device *dev, - drm_i915_cmdbuffer_t *cmd, - struct drm_clip_rect *cliprects, - void *cmdbuf) -{ - int nbox = cmd->num_cliprects; - int i = 0, count, ret; - - if (cmd->sz & 0x3) { - DRM_ERROR("alignment"); - return -EINVAL; - } - - i915_kernel_lost_context(dev); - - count = nbox ? nbox : 1; - - for (i = 0; i < count; i++) { - if (i < nbox) { - ret = i915_emit_box(dev, &cliprects[i], - cmd->DR1, cmd->DR4); - if (ret) - return ret; - } - - ret = i915_emit_cmds(dev, cmdbuf, cmd->sz / 4); - if (ret) - return ret; - } - - i915_emit_breadcrumb(dev); - return 0; -} - -static int i915_dispatch_batchbuffer(struct drm_device *dev, - drm_i915_batchbuffer_t *batch, - struct drm_clip_rect *cliprects) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - int nbox = batch->num_cliprects; - int i, count, ret; - - if ((batch->start | batch->used) & 0x7) { - DRM_ERROR("alignment"); - return -EINVAL; - } - - i915_kernel_lost_context(dev); - - count = nbox ? nbox : 1; - for (i = 0; i < count; i++) { - if (i < nbox) { - ret = i915_emit_box(dev, &cliprects[i], - batch->DR1, batch->DR4); - if (ret) - return ret; - } - - if (!IS_I830(dev) && !IS_845G(dev)) { - ret = BEGIN_LP_RING(2); - if (ret) - return ret; - - if (INTEL_INFO(dev)->gen >= 4) { - OUT_RING(MI_BATCH_BUFFER_START | (2 << 6) | MI_BATCH_NON_SECURE_I965); - OUT_RING(batch->start); - } else { - OUT_RING(MI_BATCH_BUFFER_START | (2 << 6)); - OUT_RING(batch->start | MI_BATCH_NON_SECURE); - } - } else { - ret = BEGIN_LP_RING(4); - if (ret) - return ret; - - OUT_RING(MI_BATCH_BUFFER); - OUT_RING(batch->start | MI_BATCH_NON_SECURE); - OUT_RING(batch->start + batch->used - 4); - OUT_RING(0); - } - ADVANCE_LP_RING(); - } - - - if (IS_G4X(dev) || IS_GEN5(dev)) { - if (BEGIN_LP_RING(2) == 0) { - OUT_RING(MI_FLUSH | MI_NO_WRITE_FLUSH | MI_INVALIDATE_ISP); - OUT_RING(MI_NOOP); - ADVANCE_LP_RING(); - } - } - - i915_emit_breadcrumb(dev); - return 0; -} - -static int i915_dispatch_flip(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - struct drm_i915_master_private *master_priv = - dev->primary->master->driver_priv; - int ret; - - if (!master_priv->sarea_priv) - return -EINVAL; - - DRM_DEBUG_DRIVER("%s: page=%d pfCurrentPage=%d\n", - __func__, - dev_priv->dri1.current_page, - master_priv->sarea_priv->pf_current_page); - - i915_kernel_lost_context(dev); - - ret = BEGIN_LP_RING(10); - if (ret) - return ret; - - OUT_RING(MI_FLUSH | MI_READ_FLUSH); - OUT_RING(0); - - OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP); - OUT_RING(0); - if (dev_priv->dri1.current_page == 0) { - OUT_RING(dev_priv->dri1.back_offset); - dev_priv->dri1.current_page = 1; - } else { - OUT_RING(dev_priv->dri1.front_offset); - dev_priv->dri1.current_page = 0; - } - OUT_RING(0); - - OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP); - OUT_RING(0); - - ADVANCE_LP_RING(); - - master_priv->sarea_priv->last_enqueue = dev_priv->dri1.counter++; - - if (BEGIN_LP_RING(4) == 0) { - OUT_RING(MI_STORE_DWORD_INDEX); - OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT); - OUT_RING(dev_priv->dri1.counter); - OUT_RING(0); - ADVANCE_LP_RING(); - } - - master_priv->sarea_priv->pf_current_page = dev_priv->dri1.current_page; - return 0; -} - -static int i915_quiescent(struct drm_device *dev) -{ - i915_kernel_lost_context(dev); - return intel_ring_idle(LP_RING(dev->dev_private)); -} - -static int i915_flush_ioctl(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - int ret; - - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return -ENODEV; - - RING_LOCK_TEST_WITH_RETURN(dev, file_priv); - - mutex_lock(&dev->struct_mutex); - ret = i915_quiescent(dev); - mutex_unlock(&dev->struct_mutex); - - return ret; -} - -static int i915_batchbuffer(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - struct drm_i915_master_private *master_priv; - drm_i915_sarea_t *sarea_priv; - drm_i915_batchbuffer_t *batch = data; - int ret; - struct drm_clip_rect *cliprects = NULL; - - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return -ENODEV; - - master_priv = dev->primary->master->driver_priv; - sarea_priv = (drm_i915_sarea_t *) master_priv->sarea_priv; - - if (!dev_priv->dri1.allow_batchbuffer) { - DRM_ERROR("Batchbuffer ioctl disabled\n"); - return -EINVAL; - } - - DRM_DEBUG_DRIVER("i915 batchbuffer, start %x used %d cliprects %d\n", - batch->start, batch->used, batch->num_cliprects); - - RING_LOCK_TEST_WITH_RETURN(dev, file_priv); - - if (batch->num_cliprects < 0) - return -EINVAL; - - if (batch->num_cliprects) { - cliprects = kcalloc(batch->num_cliprects, - sizeof(*cliprects), - GFP_KERNEL); - if (cliprects == NULL) - return -ENOMEM; - - ret = copy_from_user(cliprects, batch->cliprects, - batch->num_cliprects * - sizeof(struct drm_clip_rect)); - if (ret != 0) { - ret = -EFAULT; - goto fail_free; - } - } - - mutex_lock(&dev->struct_mutex); - ret = i915_dispatch_batchbuffer(dev, batch, cliprects); - mutex_unlock(&dev->struct_mutex); - - if (sarea_priv) - sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv); - -fail_free: - kfree(cliprects); - - return ret; -} - -static int i915_cmdbuffer(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - struct drm_i915_master_private *master_priv; - drm_i915_sarea_t *sarea_priv; - drm_i915_cmdbuffer_t *cmdbuf = data; - struct drm_clip_rect *cliprects = NULL; - void *batch_data; - int ret; - - DRM_DEBUG_DRIVER("i915 cmdbuffer, buf %p sz %d cliprects %d\n", - cmdbuf->buf, cmdbuf->sz, cmdbuf->num_cliprects); - - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return -ENODEV; - - master_priv = dev->primary->master->driver_priv; - sarea_priv = (drm_i915_sarea_t *) master_priv->sarea_priv; - - RING_LOCK_TEST_WITH_RETURN(dev, file_priv); - - if (cmdbuf->num_cliprects < 0) - return -EINVAL; - - batch_data = kmalloc(cmdbuf->sz, GFP_KERNEL); - if (batch_data == NULL) - return -ENOMEM; - - ret = copy_from_user(batch_data, cmdbuf->buf, cmdbuf->sz); - if (ret != 0) { - ret = -EFAULT; - goto fail_batch_free; - } - - if (cmdbuf->num_cliprects) { - cliprects = kcalloc(cmdbuf->num_cliprects, - sizeof(*cliprects), GFP_KERNEL); - if (cliprects == NULL) { - ret = -ENOMEM; - goto fail_batch_free; - } - - ret = copy_from_user(cliprects, cmdbuf->cliprects, - cmdbuf->num_cliprects * - sizeof(struct drm_clip_rect)); - if (ret != 0) { - ret = -EFAULT; - goto fail_clip_free; - } - } - - mutex_lock(&dev->struct_mutex); - ret = i915_dispatch_cmdbuffer(dev, cmdbuf, cliprects, batch_data); - mutex_unlock(&dev->struct_mutex); - if (ret) { - DRM_ERROR("i915_dispatch_cmdbuffer failed\n"); - goto fail_clip_free; - } - - if (sarea_priv) - sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv); - -fail_clip_free: - kfree(cliprects); -fail_batch_free: - kfree(batch_data); - - return ret; -} - -static int i915_emit_irq(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv; - - i915_kernel_lost_context(dev); - - DRM_DEBUG_DRIVER("\n"); - - dev_priv->dri1.counter++; - if (dev_priv->dri1.counter > 0x7FFFFFFFUL) - dev_priv->dri1.counter = 1; - if (master_priv->sarea_priv) - master_priv->sarea_priv->last_enqueue = dev_priv->dri1.counter; - - if (BEGIN_LP_RING(4) == 0) { - OUT_RING(MI_STORE_DWORD_INDEX); - OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT); - OUT_RING(dev_priv->dri1.counter); - OUT_RING(MI_USER_INTERRUPT); - ADVANCE_LP_RING(); - } - - return dev_priv->dri1.counter; -} - -static int i915_wait_irq(struct drm_device *dev, int irq_nr) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv; - int ret = 0; - struct intel_engine_cs *ring = LP_RING(dev_priv); - - DRM_DEBUG_DRIVER("irq_nr=%d breadcrumb=%d\n", irq_nr, - READ_BREADCRUMB(dev_priv)); - - if (READ_BREADCRUMB(dev_priv) >= irq_nr) { - if (master_priv->sarea_priv) - master_priv->sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv); - return 0; - } - - if (master_priv->sarea_priv) - master_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT; - - if (ring->irq_get(ring)) { - DRM_WAIT_ON(ret, ring->irq_queue, 3 * HZ, - READ_BREADCRUMB(dev_priv) >= irq_nr); - ring->irq_put(ring); - } else if (wait_for(READ_BREADCRUMB(dev_priv) >= irq_nr, 3000)) - ret = -EBUSY; - - if (ret == -EBUSY) { - DRM_ERROR("EBUSY -- rec: %d emitted: %d\n", - READ_BREADCRUMB(dev_priv), (int)dev_priv->dri1.counter); - } - - return ret; -} - -/* Needs the lock as it touches the ring. - */ -static int i915_irq_emit(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - drm_i915_irq_emit_t *emit = data; - int result; - - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return -ENODEV; - - if (!dev_priv || !LP_RING(dev_priv)->buffer->virtual_start) { - DRM_ERROR("called with no initialization\n"); - return -EINVAL; - } - - RING_LOCK_TEST_WITH_RETURN(dev, file_priv); - - mutex_lock(&dev->struct_mutex); - result = i915_emit_irq(dev); - mutex_unlock(&dev->struct_mutex); - - if (copy_to_user(emit->irq_seq, &result, sizeof(int))) { - DRM_ERROR("copy_to_user\n"); - return -EFAULT; - } - - return 0; -} - -/* Doesn't need the hardware lock. - */ -static int i915_irq_wait(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - drm_i915_irq_wait_t *irqwait = data; - - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return -ENODEV; - - if (!dev_priv) { - DRM_ERROR("called with no initialization\n"); - return -EINVAL; - } - - return i915_wait_irq(dev, irqwait->irq_seq); -} - -static int i915_vblank_pipe_get(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - drm_i915_vblank_pipe_t *pipe = data; - - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return -ENODEV; - - if (!dev_priv) { - DRM_ERROR("called with no initialization\n"); - return -EINVAL; - } - - pipe->pipe = DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B; - - return 0; -} - -/** - * Schedule buffer swap at given vertical blank. - */ -static int i915_vblank_swap(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - /* The delayed swap mechanism was fundamentally racy, and has been - * removed. The model was that the client requested a delayed flip/swap - * from the kernel, then waited for vblank before continuing to perform - * rendering. The problem was that the kernel might wake the client - * up before it dispatched the vblank swap (since the lock has to be - * held while touching the ringbuffer), in which case the client would - * clear and start the next frame before the swap occurred, and - * flicker would occur in addition to likely missing the vblank. - * - * In the absence of this ioctl, userland falls back to a correct path - * of waiting for a vblank, then dispatching the swap on its own. - * Context switching to userland and back is plenty fast enough for - * meeting the requirements of vblank swapping. - */ - return -EINVAL; -} - -static int i915_flip_bufs(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - int ret; - - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return -ENODEV; - - DRM_DEBUG_DRIVER("%s\n", __func__); - - RING_LOCK_TEST_WITH_RETURN(dev, file_priv); - - mutex_lock(&dev->struct_mutex); - ret = i915_dispatch_flip(dev); - mutex_unlock(&dev->struct_mutex); - - return ret; -} static int i915_getparam(struct drm_device *dev, void *data, struct drm_file *file_priv) @@ -936,21 +58,12 @@ static int i915_getparam(struct drm_device *dev, void *data, drm_i915_getparam_t *param = data; int value; - if (!dev_priv) { - DRM_ERROR("called with no initialization\n"); - return -EINVAL; - } - switch (param->param) { case I915_PARAM_IRQ_ACTIVE: - value = dev->pdev->irq ? 1 : 0; - break; case I915_PARAM_ALLOW_BATCHBUFFER: - value = dev_priv->dri1.allow_batchbuffer ? 1 : 0; - break; case I915_PARAM_LAST_DISPATCH: - value = READ_BREADCRUMB(dev_priv); - break; + /* Reject all old ums/dri params. */ + return -ENODEV; case I915_PARAM_CHIPSET_ID: value = dev->pdev->device; break; @@ -1027,6 +140,9 @@ static int i915_getparam(struct drm_device *dev, void *data, case I915_PARAM_CMD_PARSER_VERSION: value = i915_cmd_parser_get_version(); break; + case I915_PARAM_HAS_COHERENT_PHYS_GTT: + value = 1; + break; default: DRM_DEBUG("Unknown parameter %d\n", param->param); return -EINVAL; @@ -1046,19 +162,13 @@ static int i915_setparam(struct drm_device *dev, void *data, struct drm_i915_private *dev_priv = dev->dev_private; drm_i915_setparam_t *param = data; - if (!dev_priv) { - DRM_ERROR("called with no initialization\n"); - return -EINVAL; - } - switch (param->param) { case I915_SETPARAM_USE_MI_BATCHBUFFER_START: - break; case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY: - break; case I915_SETPARAM_ALLOW_BATCHBUFFER: - dev_priv->dri1.allow_batchbuffer = param->value ? 1 : 0; - break; + /* Reject all old ums/dri params. */ + return -ENODEV; + case I915_SETPARAM_NUM_USED_FENCES: if (param->value > dev_priv->num_fence_regs || param->value < 0) @@ -1075,54 +185,6 @@ static int i915_setparam(struct drm_device *dev, void *data, return 0; } -static int i915_set_status_page(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - drm_i915_hws_addr_t *hws = data; - struct intel_engine_cs *ring; - - if (drm_core_check_feature(dev, DRIVER_MODESET)) - return -ENODEV; - - if (!I915_NEED_GFX_HWS(dev)) - return -EINVAL; - - if (!dev_priv) { - DRM_ERROR("called with no initialization\n"); - return -EINVAL; - } - - if (drm_core_check_feature(dev, DRIVER_MODESET)) { - WARN(1, "tried to set status page when mode setting active\n"); - return 0; - } - - DRM_DEBUG_DRIVER("set status page addr 0x%08x\n", (u32)hws->addr); - - ring = LP_RING(dev_priv); - ring->status_page.gfx_addr = hws->addr & (0x1ffff<<12); - - dev_priv->dri1.gfx_hws_cpu_addr = - ioremap_wc(dev_priv->gtt.mappable_base + hws->addr, 4096); - if (dev_priv->dri1.gfx_hws_cpu_addr == NULL) { - i915_dma_cleanup(dev); - ring->status_page.gfx_addr = 0; - DRM_ERROR("can not ioremap virtual address for" - " G33 hw status page\n"); - return -ENOMEM; - } - - memset_io(dev_priv->dri1.gfx_hws_cpu_addr, 0, PAGE_SIZE); - I915_WRITE(HWS_PGA, ring->status_page.gfx_addr); - - DRM_DEBUG_DRIVER("load hws HWS_PGA with gfx mem 0x%x\n", - ring->status_page.gfx_addr); - DRM_DEBUG_DRIVER("load hws at %p\n", - ring->status_page.page_addr); - return 0; -} - static int i915_get_bridge_dev(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; @@ -1398,30 +460,6 @@ out: return ret; } -int i915_master_create(struct drm_device *dev, struct drm_master *master) -{ - struct drm_i915_master_private *master_priv; - - master_priv = kzalloc(sizeof(*master_priv), GFP_KERNEL); - if (!master_priv) - return -ENOMEM; - - master->driver_priv = master_priv; - return 0; -} - -void i915_master_destroy(struct drm_device *dev, struct drm_master *master) -{ - struct drm_i915_master_private *master_priv = master->driver_priv; - - if (!master_priv) - return; - - kfree(master_priv); - - master->driver_priv = NULL; -} - #if IS_ENABLED(CONFIG_FB) static int i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv) { @@ -1663,15 +701,17 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) goto out_regs; if (drm_core_check_feature(dev, DRIVER_MODESET)) { - ret = i915_kick_out_vgacon(dev_priv); + /* WARNING: Apparently we must kick fbdev drivers before vgacon, + * otherwise the vga fbdev driver falls over. */ + ret = i915_kick_out_firmware_fb(dev_priv); if (ret) { - DRM_ERROR("failed to remove conflicting VGA console\n"); + DRM_ERROR("failed to remove conflicting framebuffer drivers\n"); goto out_gtt; } - ret = i915_kick_out_firmware_fb(dev_priv); + ret = i915_kick_out_vgacon(dev_priv); if (ret) { - DRM_ERROR("failed to remove conflicting framebuffer drivers\n"); + DRM_ERROR("failed to remove conflicting VGA console\n"); goto out_gtt; } } @@ -1775,9 +815,6 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) DRM_ERROR("failed to init modeset\n"); goto out_power_well; } - } else { - /* Start out suspended in ums mode. */ - dev_priv->ums.mm_suspended = 1; } i915_setup_sysfs(dev); @@ -1894,9 +931,6 @@ int i915_driver_unload(struct drm_device *dev) i915_gem_context_fini(dev); mutex_unlock(&dev->struct_mutex); i915_gem_cleanup_stolen(dev); - - if (!I915_NEED_GFX_HWS(dev)) - i915_free_hws(dev); } intel_teardown_gmbus(dev); @@ -1946,23 +980,8 @@ int i915_driver_open(struct drm_device *dev, struct drm_file *file) */ void i915_driver_lastclose(struct drm_device *dev) { - struct drm_i915_private *dev_priv = dev->dev_private; - - /* On gen6+ we refuse to init without kms enabled, but then the drm core - * goes right around and calls lastclose. Check for this and don't clean - * up anything. */ - if (!dev_priv) - return; - - if (drm_core_check_feature(dev, DRIVER_MODESET)) { - intel_fbdev_restore_mode(dev); - vga_switcheroo_process_delayed_switch(); - return; - } - - i915_gem_lastclose(dev); - - i915_dma_cleanup(dev); + intel_fbdev_restore_mode(dev); + vga_switcheroo_process_delayed_switch(); } void i915_driver_preclose(struct drm_device *dev, struct drm_file *file) @@ -1986,24 +1005,24 @@ void i915_driver_postclose(struct drm_device *dev, struct drm_file *file) } const struct drm_ioctl_desc i915_ioctls[] = { - DRM_IOCTL_DEF_DRV(I915_INIT, i915_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF_DRV(I915_FLUSH, i915_flush_ioctl, DRM_AUTH), - DRM_IOCTL_DEF_DRV(I915_FLIP, i915_flip_bufs, DRM_AUTH), - DRM_IOCTL_DEF_DRV(I915_BATCHBUFFER, i915_batchbuffer, DRM_AUTH), - DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT, i915_irq_emit, DRM_AUTH), - DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, i915_irq_wait, DRM_AUTH), + DRM_IOCTL_DEF_DRV(I915_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), + DRM_IOCTL_DEF_DRV(I915_FLUSH, drm_noop, DRM_AUTH), + DRM_IOCTL_DEF_DRV(I915_FLIP, drm_noop, DRM_AUTH), + DRM_IOCTL_DEF_DRV(I915_BATCHBUFFER, drm_noop, DRM_AUTH), + DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT, drm_noop, DRM_AUTH), + DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_GETPARAM, i915_getparam, DRM_AUTH|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_SETPARAM, i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_ALLOC, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_FREE, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF_DRV(I915_CMDBUFFER, i915_cmdbuffer, DRM_AUTH), + DRM_IOCTL_DEF_DRV(I915_CMDBUFFER, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_SET_VBLANK_PIPE, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE, i915_vblank_pipe_get, DRM_AUTH), - DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP, i915_vblank_swap, DRM_AUTH), - DRM_IOCTL_DEF_DRV(I915_HWS_ADDR, i915_set_status_page, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), - DRM_IOCTL_DEF_DRV(I915_GEM_INIT, i915_gem_init_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE, drm_noop, DRM_AUTH), + DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP, drm_noop, DRM_AUTH), + DRM_IOCTL_DEF_DRV(I915_HWS_ADDR, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), + DRM_IOCTL_DEF_DRV(I915_GEM_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER, i915_gem_execbuffer, DRM_AUTH|DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2, i915_gem_execbuffer2, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_PIN, i915_gem_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY|DRM_UNLOCKED), @@ -2012,8 +1031,8 @@ const struct drm_ioctl_desc i915_ioctls[] = { DRM_IOCTL_DEF_DRV(I915_GEM_SET_CACHING, i915_gem_set_caching_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_GET_CACHING, i915_gem_get_caching_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW), - DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT, i915_gem_entervt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT, i915_gem_leavevt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY|DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(I915_GEM_CREATE, i915_gem_create_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW), |