diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_dma.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_dma.c | 998 |
1 files changed, 998 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c new file mode 100644 index 0000000..afa8a12 --- /dev/null +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -0,0 +1,998 @@ +/* i915_dma.c -- DMA support for the I915 -*- linux-c -*- + */ +/* + * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + */ + +#include "drmP.h" +#include "drm.h" +#include "i915_drm.h" +#include "i915_drv.h" + +/* Really want an OS-independent resettable timer. Would like to have + * this loop run for (eg) 3 sec, but have the timer reset every time + * the head pointer changes, so that EBUSY only happens if the ring + * actually stalls for (eg) 3 seconds. + */ +int i915_wait_ring(struct drm_device * dev, int n, const char *caller) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + drm_i915_ring_buffer_t *ring = &(dev_priv->ring); + u32 acthd_reg = IS_I965G(dev) ? ACTHD_I965 : ACTHD; + u32 last_acthd = I915_READ(acthd_reg); + u32 acthd; + u32 last_head = I915_READ(PRB0_HEAD) & HEAD_ADDR; + int i; + + for (i = 0; i < 100000; i++) { + ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR; + acthd = I915_READ(acthd_reg); + ring->space = ring->head - (ring->tail + 8); + if (ring->space < 0) + ring->space += ring->Size; + if (ring->space >= n) + return 0; + + if (dev_priv->sarea_priv) + dev_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT; + + if (ring->head != last_head) + i = 0; + if (acthd != last_acthd) + i = 0; + + last_head = ring->head; + last_acthd = acthd; + msleep_interruptible(10); + + } + + return -EBUSY; +} + +/** + * Sets up the hardware status page for devices that need a physical address + * in the register. + */ +static int i915_init_phys_hws(struct drm_device *dev) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + /* Program Hardware Status Page */ + dev_priv->status_page_dmah = + drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE, 0xffffffff); + + if (!dev_priv->status_page_dmah) { + DRM_ERROR("Can not allocate hardware status page\n"); + return -ENOMEM; + } + dev_priv->hw_status_page = dev_priv->status_page_dmah->vaddr; + dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr; + + memset(dev_priv->hw_status_page, 0, PAGE_SIZE); + + I915_WRITE(HWS_PGA, dev_priv->dma_status_page); + DRM_DEBUG("Enabled hardware status page\n"); + return 0; +} + +/** + * 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) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + if (dev_priv->status_page_dmah) { + drm_pci_free(dev, dev_priv->status_page_dmah); + dev_priv->status_page_dmah = NULL; + } + + if (dev_priv->status_gfx_addr) { + dev_priv->status_gfx_addr = 0; + drm_core_ioremapfree(&dev_priv->hws_map, dev); + } + + /* Need to rewrite hardware status page */ + I915_WRITE(HWS_PGA, 0x1ffff000); +} + +void i915_kernel_lost_context(struct drm_device * dev) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + drm_i915_ring_buffer_t *ring = &(dev_priv->ring); + + ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR; + ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR; + ring->space = ring->head - (ring->tail + 8); + if (ring->space < 0) + ring->space += ring->Size; + + if (ring->head == ring->tail && dev_priv->sarea_priv) + dev_priv->sarea_priv->perf_boxes |= I915_BOX_RING_EMPTY; +} + +static int i915_dma_cleanup(struct drm_device * dev) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + /* 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); + + if (dev_priv->ring.virtual_start) { + drm_core_ioremapfree(&dev_priv->ring.map, dev); + dev_priv->ring.virtual_start = NULL; + dev_priv->ring.map.handle = NULL; + dev_priv->ring.map.size = 0; + } + + /* Clear the HWS virtual address at teardown */ + if (I915_NEED_GFX_HWS(dev)) + i915_free_hws(dev); + + dev_priv->sarea = NULL; + dev_priv->sarea_priv = NULL; + + return 0; +} + +static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + + dev_priv->sarea = drm_getsarea(dev); + if (!dev_priv->sarea) { + DRM_ERROR("can not find sarea!\n"); + i915_dma_cleanup(dev); + return -EINVAL; + } + + dev_priv->sarea_priv = (drm_i915_sarea_t *) + ((u8 *) dev_priv->sarea->handle + init->sarea_priv_offset); + + if (init->ring_size != 0) { + if (dev_priv->ring.ring_obj != NULL) { + i915_dma_cleanup(dev); + DRM_ERROR("Client tried to initialize ringbuffer in " + "GEM mode\n"); + return -EINVAL; + } + + dev_priv->ring.Size = init->ring_size; + dev_priv->ring.tail_mask = dev_priv->ring.Size - 1; + + dev_priv->ring.map.offset = init->ring_start; + dev_priv->ring.map.size = init->ring_size; + dev_priv->ring.map.type = 0; + dev_priv->ring.map.flags = 0; + dev_priv->ring.map.mtrr = 0; + + drm_core_ioremap(&dev_priv->ring.map, dev); + + if (dev_priv->ring.map.handle == NULL) { + i915_dma_cleanup(dev); + DRM_ERROR("can not ioremap virtual address for" + " ring buffer\n"); + return -ENOMEM; + } + } + + dev_priv->ring.virtual_start = dev_priv->ring.map.handle; + + dev_priv->cpp = init->cpp; + dev_priv->back_offset = init->back_offset; + dev_priv->front_offset = init->front_offset; + dev_priv->current_page = 0; + dev_priv->sarea_priv->pf_current_page = dev_priv->current_page; + + /* Allow hardware batchbuffers unless told otherwise. + */ + dev_priv->allow_batchbuffer = 1; + + return 0; +} + +static int i915_dma_resume(struct drm_device * dev) +{ + drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; + + DRM_DEBUG("%s\n", __func__); + + if (!dev_priv->sarea) { + DRM_ERROR("can not find sarea!\n"); + return -EINVAL; + } + + if (dev_priv->ring.map.handle == NULL) { + DRM_ERROR("can not ioremap virtual address for" + " ring buffer\n"); + return -ENOMEM; + } + + /* Program Hardware Status Page */ + if (!dev_priv->hw_status_page) { + DRM_ERROR("Can not find hardware status page\n"); + return -EINVAL; + } + DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page); + + if (dev_priv->status_gfx_addr != 0) + I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr); + else + I915_WRITE(HWS_PGA, dev_priv->dma_status_page); + DRM_DEBUG("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; + + 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 do_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 validate_cmd(int cmd) +{ + int ret = do_validate_cmd(cmd); + +/* printk("validate_cmd( %x ): %d\n", cmd, ret); */ + + return ret; +} + +static int i915_emit_cmds(struct drm_device * dev, int __user * buffer, int dwords) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + int i; + RING_LOCALS; + + if ((dwords+1) * sizeof(int) >= dev_priv->ring.Size - 8) + return -EINVAL; + + BEGIN_LP_RING((dwords+1)&~1); + + for (i = 0; i < dwords;) { + int cmd, sz; + + if (DRM_COPY_FROM_USER_UNCHECKED(&cmd, &buffer[i], sizeof(cmd))) + return -EINVAL; + + if ((sz = validate_cmd(cmd)) == 0 || i + sz > dwords) + return -EINVAL; + + OUT_RING(cmd); + + while (++i, --sz) { + if (DRM_COPY_FROM_USER_UNCHECKED(&cmd, &buffer[i], + sizeof(cmd))) { + return -EINVAL; + } + OUT_RING(cmd); + } + } + + if (dwords & 1) + OUT_RING(0); + + ADVANCE_LP_RING(); + + return 0; +} + +int +i915_emit_box(struct drm_device *dev, + struct drm_clip_rect __user *boxes, + int i, int DR1, int DR4) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + struct drm_clip_rect box; + RING_LOCALS; + + if (DRM_COPY_FROM_USER_UNCHECKED(&box, &boxes[i], sizeof(box))) { + return -EFAULT; + } + + 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 (IS_I965G(dev)) { + BEGIN_LP_RING(4); + 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); + ADVANCE_LP_RING(); + } else { + BEGIN_LP_RING(6); + 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) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + RING_LOCALS; + + dev_priv->counter++; + if (dev_priv->counter > 0x7FFFFFFFUL) + dev_priv->counter = 0; + if (dev_priv->sarea_priv) + dev_priv->sarea_priv->last_enqueue = dev_priv->counter; + + BEGIN_LP_RING(4); + OUT_RING(MI_STORE_DWORD_INDEX); + OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT); + OUT_RING(dev_priv->counter); + OUT_RING(0); + ADVANCE_LP_RING(); +} + +static int i915_dispatch_cmdbuffer(struct drm_device * dev, + drm_i915_cmdbuffer_t * cmd) +{ + 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, cmd->cliprects, i, + cmd->DR1, cmd->DR4); + if (ret) + return ret; + } + + ret = i915_emit_cmds(dev, (int __user *)cmd->buf, 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) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + struct drm_clip_rect __user *boxes = batch->cliprects; + int nbox = batch->num_cliprects; + int i = 0, count; + RING_LOCALS; + + 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) { + int ret = i915_emit_box(dev, boxes, i, + batch->DR1, batch->DR4); + if (ret) + return ret; + } + + if (!IS_I830(dev) && !IS_845G(dev)) { + BEGIN_LP_RING(2); + if (IS_I965G(dev)) { + 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); + } + ADVANCE_LP_RING(); + } else { + BEGIN_LP_RING(4); + 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(); + } + } + + i915_emit_breadcrumb(dev); + + return 0; +} + +static int i915_dispatch_flip(struct drm_device * dev) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + RING_LOCALS; + + if (!dev_priv->sarea_priv) + return -EINVAL; + + DRM_DEBUG("%s: page=%d pfCurrentPage=%d\n", + __func__, + dev_priv->current_page, + dev_priv->sarea_priv->pf_current_page); + + i915_kernel_lost_context(dev); + + BEGIN_LP_RING(2); + OUT_RING(MI_FLUSH | MI_READ_FLUSH); + OUT_RING(0); + ADVANCE_LP_RING(); + + BEGIN_LP_RING(6); + OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP); + OUT_RING(0); + if (dev_priv->current_page == 0) { + OUT_RING(dev_priv->back_offset); + dev_priv->current_page = 1; + } else { + OUT_RING(dev_priv->front_offset); + dev_priv->current_page = 0; + } + OUT_RING(0); + ADVANCE_LP_RING(); + + BEGIN_LP_RING(2); + OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP); + OUT_RING(0); + ADVANCE_LP_RING(); + + dev_priv->sarea_priv->last_enqueue = dev_priv->counter++; + + BEGIN_LP_RING(4); + OUT_RING(MI_STORE_DWORD_INDEX); + OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT); + OUT_RING(dev_priv->counter); + OUT_RING(0); + ADVANCE_LP_RING(); + + dev_priv->sarea_priv->pf_current_page = dev_priv->current_page; + return 0; +} + +static int i915_quiescent(struct drm_device * dev) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + + i915_kernel_lost_context(dev); + return i915_wait_ring(dev, dev_priv->ring.Size - 8, __func__); +} + +static int i915_flush_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + int ret; + + 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) +{ + drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; + drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *) + dev_priv->sarea_priv; + drm_i915_batchbuffer_t *batch = data; + int ret; + + if (!dev_priv->allow_batchbuffer) { + DRM_ERROR("Batchbuffer ioctl disabled\n"); + return -EINVAL; + } + + DRM_DEBUG("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 && DRM_VERIFYAREA_READ(batch->cliprects, + batch->num_cliprects * + sizeof(struct drm_clip_rect))) + return -EFAULT; + + mutex_lock(&dev->struct_mutex); + ret = i915_dispatch_batchbuffer(dev, batch); + mutex_unlock(&dev->struct_mutex); + + if (sarea_priv) + sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv); + return ret; +} + +static int i915_cmdbuffer(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; + drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *) + dev_priv->sarea_priv; + drm_i915_cmdbuffer_t *cmdbuf = data; + int ret; + + DRM_DEBUG("i915 cmdbuffer, buf %p sz %d cliprects %d\n", + cmdbuf->buf, cmdbuf->sz, cmdbuf->num_cliprects); + + RING_LOCK_TEST_WITH_RETURN(dev, file_priv); + + if (cmdbuf->num_cliprects && + DRM_VERIFYAREA_READ(cmdbuf->cliprects, + cmdbuf->num_cliprects * + sizeof(struct drm_clip_rect))) { + DRM_ERROR("Fault accessing cliprects\n"); + return -EFAULT; + } + + mutex_lock(&dev->struct_mutex); + ret = i915_dispatch_cmdbuffer(dev, cmdbuf); + mutex_unlock(&dev->struct_mutex); + if (ret) { + DRM_ERROR("i915_dispatch_cmdbuffer failed\n"); + return ret; + } + + if (sarea_priv) + sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv); + return 0; +} + +static int i915_flip_bufs(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + int ret; + + DRM_DEBUG("%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) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + 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->allow_batchbuffer ? 1 : 0; + break; + case I915_PARAM_LAST_DISPATCH: + value = READ_BREADCRUMB(dev_priv); + break; + case I915_PARAM_CHIPSET_ID: + value = dev->pci_device; + break; + case I915_PARAM_HAS_GEM: + value = dev_priv->has_gem; + break; + default: + DRM_ERROR("Unknown parameter %d\n", param->param); + return -EINVAL; + } + + if (DRM_COPY_TO_USER(param->value, &value, sizeof(int))) { + DRM_ERROR("DRM_COPY_TO_USER failed\n"); + return -EFAULT; + } + + return 0; +} + +static int i915_setparam(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + drm_i915_private_t *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: + dev_priv->tex_lru_log_granularity = param->value; + break; + case I915_SETPARAM_ALLOW_BATCHBUFFER: + dev_priv->allow_batchbuffer = param->value; + break; + default: + DRM_ERROR("unknown parameter %d\n", param->param); + return -EINVAL; + } + + return 0; +} + +static int i915_set_status_page(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + drm_i915_hws_addr_t *hws = data; + + if (!I915_NEED_GFX_HWS(dev)) + return -EINVAL; + + if (!dev_priv) { + DRM_ERROR("called with no initialization\n"); + return -EINVAL; + } + + printk(KERN_DEBUG "set status page addr 0x%08x\n", (u32)hws->addr); + + dev_priv->status_gfx_addr = hws->addr & (0x1ffff<<12); + + dev_priv->hws_map.offset = dev->agp->base + hws->addr; + dev_priv->hws_map.size = 4*1024; + dev_priv->hws_map.type = 0; + dev_priv->hws_map.flags = 0; + dev_priv->hws_map.mtrr = 0; + + drm_core_ioremap(&dev_priv->hws_map, dev); + if (dev_priv->hws_map.handle == NULL) { + i915_dma_cleanup(dev); + dev_priv->status_gfx_addr = 0; + DRM_ERROR("can not ioremap virtual address for" + " G33 hw status page\n"); + return -ENOMEM; + } + dev_priv->hw_status_page = dev_priv->hws_map.handle; + + memset(dev_priv->hw_status_page, 0, PAGE_SIZE); + I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr); + DRM_DEBUG("load hws HWS_PGA with gfx mem 0x%x\n", + dev_priv->status_gfx_addr); + DRM_DEBUG("load hws at %p\n", dev_priv->hw_status_page); + return 0; +} + +int i915_driver_load(struct drm_device *dev, unsigned long flags) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + unsigned long base, size; + int ret = 0, mmio_bar = IS_I9XX(dev) ? 0 : 1; + + /* i915 has 4 more counters */ + dev->counters += 4; + dev->types[6] = _DRM_STAT_IRQ; + dev->types[7] = _DRM_STAT_PRIMARY; + dev->types[8] = _DRM_STAT_SECONDARY; + dev->types[9] = _DRM_STAT_DMA; + + dev_priv = drm_alloc(sizeof(drm_i915_private_t), DRM_MEM_DRIVER); + if (dev_priv == NULL) + return -ENOMEM; + + memset(dev_priv, 0, sizeof(drm_i915_private_t)); + + dev->dev_private = (void *)dev_priv; + dev_priv->dev = dev; + + /* Add register map (needed for suspend/resume) */ + base = drm_get_resource_start(dev, mmio_bar); + size = drm_get_resource_len(dev, mmio_bar); + + dev_priv->regs = ioremap(base, size); + +#ifdef CONFIG_HIGHMEM64G + /* don't enable GEM on PAE - needs agp + set_memory_* interface fixes */ + dev_priv->has_gem = 0; +#else + /* enable GEM by default */ + dev_priv->has_gem = 1; +#endif + + i915_gem_load(dev); + + /* Init HWS */ + if (!I915_NEED_GFX_HWS(dev)) { + ret = i915_init_phys_hws(dev); + if (ret != 0) + return ret; + } + + /* On the 945G/GM, the chipset reports the MSI capability on the + * integrated graphics even though the support isn't actually there + * according to the published specs. It doesn't appear to function + * correctly in testing on 945G. + * This may be a side effect of MSI having been made available for PEG + * and the registers being closely associated. + * + * According to chipset errata, on the 965GM, MSI interrupts may + * be lost or delayed, but we use them anyways to avoid + * stuck interrupts on some machines. + */ + if (!IS_I945G(dev) && !IS_I945GM(dev)) + pci_enable_msi(dev->pdev); + + intel_opregion_init(dev); + + spin_lock_init(&dev_priv->user_irq_lock); + + ret = drm_vblank_init(dev, I915_NUM_PIPE); + + if (ret) { + (void) i915_driver_unload(dev); + return ret; + } + + return ret; +} + +int i915_driver_unload(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + + if (dev->pdev->msi_enabled) + pci_disable_msi(dev->pdev); + + i915_free_hws(dev); + + if (dev_priv->regs != NULL) + iounmap(dev_priv->regs); + + intel_opregion_free(dev); + + drm_free(dev->dev_private, sizeof(drm_i915_private_t), + DRM_MEM_DRIVER); + + return 0; +} + +int i915_driver_open(struct drm_device *dev, struct drm_file *file_priv) +{ + struct drm_i915_file_private *i915_file_priv; + + DRM_DEBUG("\n"); + i915_file_priv = (struct drm_i915_file_private *) + drm_alloc(sizeof(*i915_file_priv), DRM_MEM_FILES); + + if (!i915_file_priv) + return -ENOMEM; + + file_priv->driver_priv = i915_file_priv; + + i915_file_priv->mm.last_gem_seqno = 0; + i915_file_priv->mm.last_gem_throttle_seqno = 0; + + return 0; +} + +void i915_driver_lastclose(struct drm_device * dev) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + + if (!dev_priv) + return; + + i915_gem_lastclose(dev); + + if (dev_priv->agp_heap) + i915_mem_takedown(&(dev_priv->agp_heap)); + + i915_dma_cleanup(dev); +} + +void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv) +{ + drm_i915_private_t *dev_priv = dev->dev_private; + i915_mem_release(dev, file_priv, dev_priv->agp_heap); +} + +void i915_driver_postclose(struct drm_device *dev, struct drm_file *file_priv) +{ + struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv; + + drm_free(i915_file_priv, sizeof(*i915_file_priv), DRM_MEM_FILES); +} + +struct drm_ioctl_desc i915_ioctls[] = { + DRM_IOCTL_DEF(DRM_I915_INIT, i915_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), + DRM_IOCTL_DEF(DRM_I915_FLUSH, i915_flush_ioctl, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I915_FLIP, i915_flip_bufs, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I915_BATCHBUFFER, i915_batchbuffer, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I915_IRQ_EMIT, i915_irq_emit, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I915_IRQ_WAIT, i915_irq_wait, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I915_GETPARAM, i915_getparam, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I915_SETPARAM, i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), + DRM_IOCTL_DEF(DRM_I915_ALLOC, i915_mem_alloc, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I915_FREE, i915_mem_free, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I915_INIT_HEAP, i915_mem_init_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), + DRM_IOCTL_DEF(DRM_I915_CMDBUFFER, i915_cmdbuffer, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I915_DESTROY_HEAP, i915_mem_destroy_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY ), + DRM_IOCTL_DEF(DRM_I915_SET_VBLANK_PIPE, i915_vblank_pipe_set, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY ), + DRM_IOCTL_DEF(DRM_I915_GET_VBLANK_PIPE, i915_vblank_pipe_get, DRM_AUTH ), + DRM_IOCTL_DEF(DRM_I915_VBLANK_SWAP, i915_vblank_swap, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I915_HWS_ADDR, i915_set_status_page, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), + DRM_IOCTL_DEF(DRM_I915_GEM_INIT, i915_gem_init_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), + DRM_IOCTL_DEF(DRM_I915_GEM_EXECBUFFER, i915_gem_execbuffer, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I915_GEM_PIN, i915_gem_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY), + DRM_IOCTL_DEF(DRM_I915_GEM_UNPIN, i915_gem_unpin_ioctl, DRM_AUTH|DRM_ROOT_ONLY), + DRM_IOCTL_DEF(DRM_I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH), + DRM_IOCTL_DEF(DRM_I915_GEM_ENTERVT, i915_gem_entervt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), + DRM_IOCTL_DEF(DRM_I915_GEM_LEAVEVT, i915_gem_leavevt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), + DRM_IOCTL_DEF(DRM_I915_GEM_CREATE, i915_gem_create_ioctl, 0), + DRM_IOCTL_DEF(DRM_I915_GEM_PREAD, i915_gem_pread_ioctl, 0), + DRM_IOCTL_DEF(DRM_I915_GEM_PWRITE, i915_gem_pwrite_ioctl, 0), + DRM_IOCTL_DEF(DRM_I915_GEM_MMAP, i915_gem_mmap_ioctl, 0), + DRM_IOCTL_DEF(DRM_I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, 0), + DRM_IOCTL_DEF(DRM_I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, 0), + DRM_IOCTL_DEF(DRM_I915_GEM_SET_TILING, i915_gem_set_tiling, 0), + DRM_IOCTL_DEF(DRM_I915_GEM_GET_TILING, i915_gem_get_tiling, 0), + DRM_IOCTL_DEF(DRM_I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, 0), +}; + +int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls); + +/** + * Determine if the device really is AGP or not. + * + * All Intel graphics chipsets are treated as AGP, even if they are really + * PCI-e. + * + * \param dev The device to be tested. + * + * \returns + * A value of 1 is always retured to indictate every i9x5 is AGP. + */ +int i915_driver_device_is_agp(struct drm_device * dev) +{ + return 1; +} |
