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/* 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 <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/drm2/i915/i915_dma.c 235783 2012-05-22 11:07:44Z kib $");
#include <dev/drm2/drmP.h>
#include <dev/drm2/drm.h>
#include <dev/drm2/i915/i915_drm.h>
#include <dev/drm2/i915/i915_drv.h>
#include <dev/drm2/i915/intel_drv.h>
#include <dev/drm2/i915/intel_ringbuffer.h>
static struct drm_i915_private *i915_mch_dev;
/*
* Lock protecting IPS related data structures
* - i915_mch_dev
* - dev_priv->max_delay
* - dev_priv->min_delay
* - dev_priv->fmax
* - dev_priv->gpu_busy
*/
static struct mtx mchdev_lock;
MTX_SYSINIT(mchdev, &mchdev_lock, "mchdev", MTX_DEF);
static void i915_pineview_get_mem_freq(struct drm_device *dev);
static void i915_ironlake_get_mem_freq(struct drm_device *dev);
static int i915_driver_unload_int(struct drm_device *dev, bool locked);
static void i915_write_hws_pga(struct drm_device *dev)
{
drm_i915_private_t *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);
}
/**
* 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;
struct intel_ring_buffer *ring = LP_RING(dev_priv);
/*
* Program Hardware Status Page
* XXXKIB Keep 4GB limit for allocation for now. This method
* of allocation is used on <= 965 hardware, that has several
* erratas regarding the use of physical memory > 4 GB.
*/
DRM_UNLOCK(dev);
dev_priv->status_page_dmah =
drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE, 0xffffffff);
DRM_LOCK(dev);
if (!dev_priv->status_page_dmah) {
DRM_ERROR("Can not allocate hardware status page\n");
return -ENOMEM;
}
ring->status_page.page_addr = 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);
DRM_DEBUG("Enabled hardware status page, phys %jx\n",
(uintmax_t)dev_priv->dma_status_page);
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;
struct intel_ring_buffer *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 (dev_priv->status_gfx_addr) {
dev_priv->status_gfx_addr = 0;
ring->status_page.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;
struct intel_ring_buffer *ring = LP_RING(dev_priv);
/*
* 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;
ring->head = I915_READ_HEAD(ring) & HEAD_ADDR;
ring->tail = I915_READ_TAIL(ring) & TAIL_ADDR;
ring->space = ring->head - (ring->tail + 8);
if (ring->space < 0)
ring->space += ring->size;
#if 1
KIB_NOTYET();
#else
if (!dev->primary->master)
return;
#endif
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;
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);
for (i = 0; i < I915_NUM_RINGS; i++)
intel_cleanup_ring_buffer(&dev_priv->rings[i]);
/* 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)
{
drm_i915_private_t *dev_priv = dev->dev_private;
int ret;
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->virtual + init->sarea_priv_offset);
if (init->ring_size != 0) {
if (LP_RING(dev_priv)->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->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 = 0;
/* 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;
struct intel_ring_buffer *ring = LP_RING(dev_priv);
DRM_DEBUG("\n");
if (ring->map.handle == 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("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("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;
if ((dwords+1) * sizeof(int) >= LP_RING(dev_priv)->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 *boxes,
int i, int DR1, int DR4)
{
struct drm_clip_rect box;
if (DRM_COPY_FROM_USER_UNCHECKED(&box, &boxes[i], sizeof(box))) {
return -EFAULT;
}
return (i915_emit_box_p(dev, &box, DR1, DR4));
}
int
i915_emit_box_p(struct drm_device *dev, struct drm_clip_rect *box,
int DR1, int DR4)
{
drm_i915_private_t *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 != 0)
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 != 0)
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)
{
drm_i915_private_t *dev_priv = dev->dev_private;
if (++dev_priv->counter > 0x7FFFFFFFUL)
dev_priv->counter = 0;
if (dev_priv->sarea_priv)
dev_priv->sarea_priv->last_enqueue = dev_priv->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->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\n");
return -EINVAL;
}
i915_kernel_lost_context(dev);
count = nbox ? nbox : 1;
for (i = 0; i < count; i++) {
if (i < nbox) {
ret = i915_emit_box_p(dev, &cmd->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)
{
drm_i915_private_t *dev_priv = dev->dev_private;
int nbox = batch->num_cliprects;
int i, count, ret;
if ((batch->start | batch->used) & 0x7) {
DRM_ERROR("alignment\n");
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_p(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 != 0)
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 != 0)
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();
}
i915_emit_breadcrumb(dev);
return 0;
}
static int i915_dispatch_flip(struct drm_device * dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
int ret;
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);
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->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);
OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP);
OUT_RING(0);
ADVANCE_LP_RING();
if (++dev_priv->counter > 0x7FFFFFFFUL)
dev_priv->counter = 0;
if (dev_priv->sarea_priv)
dev_priv->sarea_priv->last_enqueue = dev_priv->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->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)
{
struct intel_ring_buffer *ring = LP_RING(dev->dev_private);
i915_kernel_lost_context(dev);
return (intel_wait_ring_idle(ring));
}
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);
DRM_LOCK(dev);
ret = i915_quiescent(dev);
DRM_UNLOCK(dev);
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_batchbuffer_t *batch = data;
struct drm_clip_rect *cliprects;
size_t cliplen;
int ret;
if (!dev_priv->allow_batchbuffer) {
DRM_ERROR("Batchbuffer ioctl disabled\n");
return -EINVAL;
}
DRM_UNLOCK(dev);
DRM_DEBUG("i915 batchbuffer, start %x used %d cliprects %d\n",
batch->start, batch->used, batch->num_cliprects);
cliplen = batch->num_cliprects * sizeof(struct drm_clip_rect);
if (batch->num_cliprects < 0)
return -EFAULT;
if (batch->num_cliprects != 0) {
cliprects = malloc(batch->num_cliprects *
sizeof(struct drm_clip_rect), DRM_MEM_DMA,
M_WAITOK | M_ZERO);
ret = -copyin(batch->cliprects, cliprects,
batch->num_cliprects * sizeof(struct drm_clip_rect));
if (ret != 0) {
DRM_LOCK(dev);
goto fail_free;
}
} else
cliprects = NULL;
DRM_LOCK(dev);
RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
ret = i915_dispatch_batchbuffer(dev, batch, cliprects);
sarea_priv = (drm_i915_sarea_t *)dev_priv->sarea_priv;
if (sarea_priv)
sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
fail_free:
free(cliprects, DRM_MEM_DMA);
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_cmdbuffer_t *cmdbuf = data;
struct drm_clip_rect *cliprects = NULL;
void *batch_data;
int ret;
DRM_DEBUG("i915 cmdbuffer, buf %p sz %d cliprects %d\n",
cmdbuf->buf, cmdbuf->sz, cmdbuf->num_cliprects);
if (cmdbuf->num_cliprects < 0)
return -EINVAL;
DRM_UNLOCK(dev);
batch_data = malloc(cmdbuf->sz, DRM_MEM_DMA, M_WAITOK);
ret = -copyin(cmdbuf->buf, batch_data, cmdbuf->sz);
if (ret != 0) {
DRM_LOCK(dev);
goto fail_batch_free;
}
if (cmdbuf->num_cliprects) {
cliprects = malloc(cmdbuf->num_cliprects *
sizeof(struct drm_clip_rect), DRM_MEM_DMA,
M_WAITOK | M_ZERO);
ret = -copyin(cmdbuf->cliprects, cliprects,
cmdbuf->num_cliprects * sizeof(struct drm_clip_rect));
if (ret != 0) {
DRM_LOCK(dev);
goto fail_clip_free;
}
}
DRM_LOCK(dev);
RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
ret = i915_dispatch_cmdbuffer(dev, cmdbuf, cliprects, batch_data);
if (ret) {
DRM_ERROR("i915_dispatch_cmdbuffer failed\n");
goto fail_clip_free;
}
sarea_priv = (drm_i915_sarea_t *)dev_priv->sarea_priv;
if (sarea_priv)
sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
fail_clip_free:
free(cliprects, DRM_MEM_DMA);
fail_batch_free:
free(batch_data, DRM_MEM_DMA);
return ret;
}
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);
ret = i915_dispatch_flip(dev);
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->irq_enabled ? 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 = 1;
break;
case I915_PARAM_NUM_FENCES_AVAIL:
value = dev_priv->num_fence_regs - dev_priv->fence_reg_start;
break;
case I915_PARAM_HAS_OVERLAY:
value = dev_priv->overlay ? 1 : 0;
break;
case I915_PARAM_HAS_PAGEFLIPPING:
value = 1;
break;
case I915_PARAM_HAS_EXECBUF2:
value = 1;
break;
case I915_PARAM_HAS_BSD:
value = HAS_BSD(dev);
break;
case I915_PARAM_HAS_BLT:
value = HAS_BLT(dev);
break;
case I915_PARAM_HAS_RELAXED_FENCING:
value = 1;
break;
case I915_PARAM_HAS_COHERENT_RINGS:
value = 1;
break;
case I915_PARAM_HAS_EXEC_CONSTANTS:
value = INTEL_INFO(dev)->gen >= 4;
break;
case I915_PARAM_HAS_RELAXED_DELTA:
value = 1;
break;
case I915_PARAM_HAS_GEN7_SOL_RESET:
value = 1;
break;
case I915_PARAM_HAS_LLC:
value = HAS_LLC(dev);
break;
default:
DRM_DEBUG_DRIVER("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;
case I915_SETPARAM_NUM_USED_FENCES:
if (param->value > dev_priv->num_fence_regs ||
param->value < 0)
return -EINVAL;
/* Userspace can use first N regs */
dev_priv->fence_reg_start = param->value;
break;
default:
DRM_DEBUG("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;
struct intel_ring_buffer *ring = LP_RING(dev_priv);
if (!I915_NEED_GFX_HWS(dev))
return -EINVAL;
if (!dev_priv) {
DRM_ERROR("called with no initialization\n");
return -EINVAL;
}
DRM_DEBUG("set status page addr 0x%08x\n", (u32)hws->addr);
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
DRM_ERROR("tried to set status page when mode setting active\n");
return 0;
}
ring->status_page.gfx_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_wc(&dev_priv->hws_map, dev);
if (dev_priv->hws_map.virtual == NULL) {
i915_dma_cleanup(dev);
ring->status_page.gfx_addr = dev_priv->status_gfx_addr = 0;
DRM_ERROR("can not ioremap virtual address for"
" G33 hw status page\n");
return -ENOMEM;
}
ring->status_page.page_addr = dev_priv->hw_status_page =
dev_priv->hws_map.virtual;
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;
}
static bool
intel_enable_ppgtt(struct drm_device *dev)
{
if (i915_enable_ppgtt >= 0)
return i915_enable_ppgtt;
/* Disable ppgtt on SNB if VT-d is on. */
if (INTEL_INFO(dev)->gen == 6 && intel_iommu_enabled)
return false;
return true;
}
static int
i915_load_gem_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
unsigned long prealloc_size, gtt_size, mappable_size;
int ret;
prealloc_size = dev_priv->mm.gtt.stolen_size;
gtt_size = dev_priv->mm.gtt.gtt_total_entries << PAGE_SHIFT;
mappable_size = dev_priv->mm.gtt.gtt_mappable_entries << PAGE_SHIFT;
/* Basic memrange allocator for stolen space */
drm_mm_init(&dev_priv->mm.stolen, 0, prealloc_size);
DRM_LOCK(dev);
if (intel_enable_ppgtt(dev) && HAS_ALIASING_PPGTT(dev)) {
/* PPGTT pdes are stolen from global gtt ptes, so shrink the
* aperture accordingly when using aliasing ppgtt. */
gtt_size -= I915_PPGTT_PD_ENTRIES*PAGE_SIZE;
/* For paranoia keep the guard page in between. */
gtt_size -= PAGE_SIZE;
i915_gem_do_init(dev, 0, mappable_size, gtt_size);
ret = i915_gem_init_aliasing_ppgtt(dev);
if (ret) {
DRM_UNLOCK(dev);
return ret;
}
} else {
/* Let GEM Manage all of the aperture.
*
* However, leave one page at the end still bound to the scratch
* page. There are a number of places where the hardware
* apparently prefetches past the end of the object, and we've
* seen multiple hangs with the GPU head pointer stuck in a
* batchbuffer bound at the last page of the aperture. One page
* should be enough to keep any prefetching inside of the
* aperture.
*/
i915_gem_do_init(dev, 0, mappable_size, gtt_size - PAGE_SIZE);
}
ret = i915_gem_init_hw(dev);
DRM_UNLOCK(dev);
if (ret != 0) {
i915_gem_cleanup_aliasing_ppgtt(dev);
return (ret);
}
#if 0
/* Try to set up FBC with a reasonable compressed buffer size */
if (I915_HAS_FBC(dev) && i915_powersave) {
int cfb_size;
/* Leave 1M for line length buffer & misc. */
/* Try to get a 32M buffer... */
if (prealloc_size > (36*1024*1024))
cfb_size = 32*1024*1024;
else /* fall back to 7/8 of the stolen space */
cfb_size = prealloc_size * 7 / 8;
i915_setup_compression(dev, cfb_size);
}
#endif
/* Allow hardware batchbuffers unless told otherwise. */
dev_priv->allow_batchbuffer = 1;
return 0;
}
static int
i915_load_modeset_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
int ret;
ret = intel_parse_bios(dev);
if (ret)
DRM_INFO("failed to find VBIOS tables\n");
#if 0
intel_register_dsm_handler();
#endif
/* IIR "flip pending" bit means done if this bit is set */
if (IS_GEN3(dev) && (I915_READ(ECOSKPD) & ECO_FLIP_DONE))
dev_priv->flip_pending_is_done = true;
intel_modeset_init(dev);
ret = i915_load_gem_init(dev);
if (ret != 0)
goto cleanup_gem;
intel_modeset_gem_init(dev);
ret = drm_irq_install(dev);
if (ret)
goto cleanup_gem;
dev->vblank_disable_allowed = 1;
ret = intel_fbdev_init(dev);
if (ret)
goto cleanup_gem;
drm_kms_helper_poll_init(dev);
/* We're off and running w/KMS */
dev_priv->mm.suspended = 0;
return (0);
cleanup_gem:
DRM_LOCK(dev);
i915_gem_cleanup_ringbuffer(dev);
DRM_UNLOCK(dev);
i915_gem_cleanup_aliasing_ppgtt(dev);
return (ret);
}
static int
i915_get_bridge_dev(struct drm_device *dev)
{
struct drm_i915_private *dev_priv;
dev_priv = dev->dev_private;
dev_priv->bridge_dev = intel_gtt_get_bridge_device();
if (dev_priv->bridge_dev == NULL) {
DRM_ERROR("bridge device not found\n");
return (-1);
}
return (0);
}
#define MCHBAR_I915 0x44
#define MCHBAR_I965 0x48
#define MCHBAR_SIZE (4*4096)
#define DEVEN_REG 0x54
#define DEVEN_MCHBAR_EN (1 << 28)
/* Allocate space for the MCH regs if needed, return nonzero on error */
static int
intel_alloc_mchbar_resource(struct drm_device *dev)
{
drm_i915_private_t *dev_priv;
device_t vga;
int reg;
u32 temp_lo, temp_hi;
u64 mchbar_addr, temp;
dev_priv = dev->dev_private;
reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
if (INTEL_INFO(dev)->gen >= 4)
temp_hi = pci_read_config(dev_priv->bridge_dev, reg + 4, 4);
else
temp_hi = 0;
temp_lo = pci_read_config(dev_priv->bridge_dev, reg, 4);
mchbar_addr = ((u64)temp_hi << 32) | temp_lo;
/* If ACPI doesn't have it, assume we need to allocate it ourselves */
#ifdef XXX_CONFIG_PNP
if (mchbar_addr &&
pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE))
return 0;
#endif
/* Get some space for it */
vga = device_get_parent(dev->device);
dev_priv->mch_res_rid = 0x100;
dev_priv->mch_res = BUS_ALLOC_RESOURCE(device_get_parent(vga),
dev->device, SYS_RES_MEMORY, &dev_priv->mch_res_rid, 0, ~0UL,
MCHBAR_SIZE, RF_ACTIVE | RF_SHAREABLE);
if (dev_priv->mch_res == NULL) {
DRM_ERROR("failed mchbar resource alloc\n");
return (-ENOMEM);
}
if (INTEL_INFO(dev)->gen >= 4) {
temp = rman_get_start(dev_priv->mch_res);
temp >>= 32;
pci_write_config(dev_priv->bridge_dev, reg + 4, temp, 4);
}
pci_write_config(dev_priv->bridge_dev, reg,
rman_get_start(dev_priv->mch_res) & UINT32_MAX, 4);
return (0);
}
static void
intel_setup_mchbar(struct drm_device *dev)
{
drm_i915_private_t *dev_priv;
int mchbar_reg;
u32 temp;
bool enabled;
dev_priv = dev->dev_private;
mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
dev_priv->mchbar_need_disable = false;
if (IS_I915G(dev) || IS_I915GM(dev)) {
temp = pci_read_config(dev_priv->bridge_dev, DEVEN_REG, 4);
enabled = (temp & DEVEN_MCHBAR_EN) != 0;
} else {
temp = pci_read_config(dev_priv->bridge_dev, mchbar_reg, 4);
enabled = temp & 1;
}
/* If it's already enabled, don't have to do anything */
if (enabled) {
DRM_DEBUG("mchbar already enabled\n");
return;
}
if (intel_alloc_mchbar_resource(dev))
return;
dev_priv->mchbar_need_disable = true;
/* Space is allocated or reserved, so enable it. */
if (IS_I915G(dev) || IS_I915GM(dev)) {
pci_write_config(dev_priv->bridge_dev, DEVEN_REG,
temp | DEVEN_MCHBAR_EN, 4);
} else {
temp = pci_read_config(dev_priv->bridge_dev, mchbar_reg, 4);
pci_write_config(dev_priv->bridge_dev, mchbar_reg, temp | 1, 4);
}
}
static void
intel_teardown_mchbar(struct drm_device *dev)
{
drm_i915_private_t *dev_priv;
device_t vga;
int mchbar_reg;
u32 temp;
dev_priv = dev->dev_private;
mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
if (dev_priv->mchbar_need_disable) {
if (IS_I915G(dev) || IS_I915GM(dev)) {
temp = pci_read_config(dev_priv->bridge_dev,
DEVEN_REG, 4);
temp &= ~DEVEN_MCHBAR_EN;
pci_write_config(dev_priv->bridge_dev, DEVEN_REG,
temp, 4);
} else {
temp = pci_read_config(dev_priv->bridge_dev,
mchbar_reg, 4);
temp &= ~1;
pci_write_config(dev_priv->bridge_dev, mchbar_reg,
temp, 4);
}
}
if (dev_priv->mch_res != NULL) {
vga = device_get_parent(dev->device);
BUS_DEACTIVATE_RESOURCE(device_get_parent(vga), dev->device,
SYS_RES_MEMORY, dev_priv->mch_res_rid, dev_priv->mch_res);
BUS_RELEASE_RESOURCE(device_get_parent(vga), dev->device,
SYS_RES_MEMORY, dev_priv->mch_res_rid, dev_priv->mch_res);
dev_priv->mch_res = NULL;
}
}
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 mmio_bar, ret;
ret = 0;
/* 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 = malloc(sizeof(drm_i915_private_t), DRM_MEM_DRIVER,
M_ZERO | M_WAITOK);
if (dev_priv == NULL)
return -ENOMEM;
dev->dev_private = (void *)dev_priv;
dev_priv->dev = dev;
dev_priv->info = i915_get_device_id(dev->pci_device);
if (i915_get_bridge_dev(dev)) {
free(dev_priv, DRM_MEM_DRIVER);
return (-EIO);
}
dev_priv->mm.gtt = intel_gtt_get();
/* Add register map (needed for suspend/resume) */
mmio_bar = IS_GEN2(dev) ? 1 : 0;
base = drm_get_resource_start(dev, mmio_bar);
size = drm_get_resource_len(dev, mmio_bar);
ret = drm_addmap(dev, base, size, _DRM_REGISTERS,
_DRM_KERNEL | _DRM_DRIVER, &dev_priv->mmio_map);
dev_priv->tq = taskqueue_create("915", M_WAITOK,
taskqueue_thread_enqueue, &dev_priv->tq);
taskqueue_start_threads(&dev_priv->tq, 1, PWAIT, "i915 taskq");
mtx_init(&dev_priv->gt_lock, "915gt", NULL, MTX_DEF);
mtx_init(&dev_priv->error_lock, "915err", NULL, MTX_DEF);
mtx_init(&dev_priv->error_completion_lock, "915cmp", NULL, MTX_DEF);
mtx_init(&dev_priv->rps_lock, "915rps", NULL, MTX_DEF);
dev_priv->has_gem = 1;
intel_irq_init(dev);
intel_setup_mchbar(dev);
intel_setup_gmbus(dev);
intel_opregion_setup(dev);
intel_setup_bios(dev);
i915_gem_load(dev);
/* Init HWS */
if (!I915_NEED_GFX_HWS(dev)) {
ret = i915_init_phys_hws(dev);
if (ret != 0) {
drm_rmmap(dev, dev_priv->mmio_map);
drm_free(dev_priv, sizeof(struct drm_i915_private),
DRM_MEM_DRIVER);
return ret;
}
}
if (IS_PINEVIEW(dev))
i915_pineview_get_mem_freq(dev);
else if (IS_GEN5(dev))
i915_ironlake_get_mem_freq(dev);
mtx_init(&dev_priv->irq_lock, "userirq", NULL, MTX_DEF);
if (IS_IVYBRIDGE(dev))
dev_priv->num_pipe = 3;
else if (IS_MOBILE(dev) || !IS_GEN2(dev))
dev_priv->num_pipe = 2;
else
dev_priv->num_pipe = 1;
ret = drm_vblank_init(dev, dev_priv->num_pipe);
if (ret)
goto out_gem_unload;
/* Start out suspended */
dev_priv->mm.suspended = 1;
intel_detect_pch(dev);
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
DRM_UNLOCK(dev);
ret = i915_load_modeset_init(dev);
DRM_LOCK(dev);
if (ret < 0) {
DRM_ERROR("failed to init modeset\n");
goto out_gem_unload;
}
}
intel_opregion_init(dev);
callout_init(&dev_priv->hangcheck_timer, 1);
callout_reset(&dev_priv->hangcheck_timer, DRM_I915_HANGCHECK_PERIOD,
i915_hangcheck_elapsed, dev);
if (IS_GEN5(dev)) {
mtx_lock(&mchdev_lock);
i915_mch_dev = dev_priv;
dev_priv->mchdev_lock = &mchdev_lock;
mtx_unlock(&mchdev_lock);
}
return (0);
out_gem_unload:
/* XXXKIB */
(void) i915_driver_unload_int(dev, true);
return (ret);
}
static int
i915_driver_unload_int(struct drm_device *dev, bool locked)
{
struct drm_i915_private *dev_priv = dev->dev_private;
int ret;
if (!locked)
DRM_LOCK(dev);
ret = i915_gpu_idle(dev, true);
if (ret)
DRM_ERROR("failed to idle hardware: %d\n", ret);
if (!locked)
DRM_UNLOCK(dev);
i915_free_hws(dev);
intel_teardown_mchbar(dev);
if (locked)
DRM_UNLOCK(dev);
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
intel_fbdev_fini(dev);
intel_modeset_cleanup(dev);
}
/* Free error state after interrupts are fully disabled. */
callout_stop(&dev_priv->hangcheck_timer);
callout_drain(&dev_priv->hangcheck_timer);
i915_destroy_error_state(dev);
intel_opregion_fini(dev);
if (locked)
DRM_LOCK(dev);
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
if (!locked)
DRM_LOCK(dev);
i915_gem_free_all_phys_object(dev);
i915_gem_cleanup_ringbuffer(dev);
if (!locked)
DRM_UNLOCK(dev);
i915_gem_cleanup_aliasing_ppgtt(dev);
#if 1
KIB_NOTYET();
#else
if (I915_HAS_FBC(dev) && i915_powersave)
i915_cleanup_compression(dev);
#endif
drm_mm_takedown(&dev_priv->mm.stolen);
intel_cleanup_overlay(dev);
if (!I915_NEED_GFX_HWS(dev))
i915_free_hws(dev);
}
i915_gem_unload(dev);
mtx_destroy(&dev_priv->irq_lock);
if (dev_priv->tq != NULL)
taskqueue_free(dev_priv->tq);
bus_generic_detach(dev->device);
drm_rmmap(dev, dev_priv->mmio_map);
intel_teardown_gmbus(dev);
mtx_destroy(&dev_priv->error_lock);
mtx_destroy(&dev_priv->error_completion_lock);
mtx_destroy(&dev_priv->rps_lock);
drm_free(dev->dev_private, sizeof(drm_i915_private_t),
DRM_MEM_DRIVER);
return (0);
}
int
i915_driver_unload(struct drm_device *dev)
{
return (i915_driver_unload_int(dev, true));
}
int
i915_driver_open(struct drm_device *dev, struct drm_file *file_priv)
{
struct drm_i915_file_private *i915_file_priv;
i915_file_priv = malloc(sizeof(*i915_file_priv), DRM_MEM_FILES,
M_WAITOK | M_ZERO);
mtx_init(&i915_file_priv->mm.lck, "915fp", NULL, MTX_DEF);
INIT_LIST_HEAD(&i915_file_priv->mm.request_list);
file_priv->driver_priv = i915_file_priv;
return (0);
}
void
i915_driver_lastclose(struct drm_device * dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
if (!dev_priv || drm_core_check_feature(dev, DRIVER_MODESET)) {
#if 1
KIB_NOTYET();
#else
drm_fb_helper_restore();
vga_switcheroo_process_delayed_switch();
#endif
return;
}
i915_gem_lastclose(dev);
i915_dma_cleanup(dev);
}
void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
{
i915_gem_release(dev, file_priv);
}
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;
mtx_destroy(&i915_file_priv->mm.lck);
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, drm_noop, DRM_AUTH),
DRM_IOCTL_DEF(DRM_I915_FREE, drm_noop, DRM_AUTH),
DRM_IOCTL_DEF(DRM_I915_INIT_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
DRM_IOCTL_DEF(DRM_I915_CMDBUFFER, i915_cmdbuffer, DRM_AUTH),
DRM_IOCTL_DEF(DRM_I915_DESTROY_HEAP, drm_noop, 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_UNLOCKED),
DRM_IOCTL_DEF(DRM_I915_GEM_EXECBUFFER2, i915_gem_execbuffer2, DRM_AUTH | DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_I915_GEM_PIN, i915_gem_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY|DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_I915_GEM_UNPIN, i915_gem_unpin_ioctl, DRM_AUTH|DRM_ROOT_ONLY|DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH|DRM_UNLOCKED),
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, DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_I915_GEM_MMAP, i915_gem_mmap_ioctl, 0),
DRM_IOCTL_DEF(DRM_I915_GEM_MMAP_GTT, i915_gem_mmap_gtt_ioctl, DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_UNLOCKED),
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, DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id, DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_I915_OVERLAY_ATTRS, intel_overlay_attrs, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_I915_SET_SPRITE_COLORKEY, intel_sprite_set_colorkey, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_I915_GET_SPRITE_COLORKEY, intel_sprite_get_colorkey, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
};
struct drm_driver_info i915_driver_info = {
.driver_features = DRIVER_USE_AGP | DRIVER_REQUIRE_AGP |
DRIVER_USE_MTRR | DRIVER_HAVE_IRQ | DRIVER_LOCKLESS_IRQ |
DRIVER_GEM /*| DRIVER_MODESET*/,
.buf_priv_size = sizeof(drm_i915_private_t),
.load = i915_driver_load,
.open = i915_driver_open,
.unload = i915_driver_unload,
.preclose = i915_driver_preclose,
.lastclose = i915_driver_lastclose,
.postclose = i915_driver_postclose,
.device_is_agp = i915_driver_device_is_agp,
.gem_init_object = i915_gem_init_object,
.gem_free_object = i915_gem_free_object,
.gem_pager_ops = &i915_gem_pager_ops,
.dumb_create = i915_gem_dumb_create,
.dumb_map_offset = i915_gem_mmap_gtt,
.dumb_destroy = i915_gem_dumb_destroy,
.sysctl_init = i915_sysctl_init,
.sysctl_cleanup = i915_sysctl_cleanup,
.ioctls = i915_ioctls,
.max_ioctl = DRM_ARRAY_SIZE(i915_ioctls),
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.date = DRIVER_DATE,
.major = DRIVER_MAJOR,
.minor = DRIVER_MINOR,
.patchlevel = DRIVER_PATCHLEVEL,
};
/**
* Determine if the device really is AGP or not.
*
* All Intel graphics chipsets are treated as AGP, even if they are really
* built-in.
*
* \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;
}
static void i915_pineview_get_mem_freq(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
u32 tmp;
tmp = I915_READ(CLKCFG);
switch (tmp & CLKCFG_FSB_MASK) {
case CLKCFG_FSB_533:
dev_priv->fsb_freq = 533; /* 133*4 */
break;
case CLKCFG_FSB_800:
dev_priv->fsb_freq = 800; /* 200*4 */
break;
case CLKCFG_FSB_667:
dev_priv->fsb_freq = 667; /* 167*4 */
break;
case CLKCFG_FSB_400:
dev_priv->fsb_freq = 400; /* 100*4 */
break;
}
switch (tmp & CLKCFG_MEM_MASK) {
case CLKCFG_MEM_533:
dev_priv->mem_freq = 533;
break;
case CLKCFG_MEM_667:
dev_priv->mem_freq = 667;
break;
case CLKCFG_MEM_800:
dev_priv->mem_freq = 800;
break;
}
/* detect pineview DDR3 setting */
tmp = I915_READ(CSHRDDR3CTL);
dev_priv->is_ddr3 = (tmp & CSHRDDR3CTL_DDR3) ? 1 : 0;
}
static void i915_ironlake_get_mem_freq(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
u16 ddrpll, csipll;
ddrpll = I915_READ16(DDRMPLL1);
csipll = I915_READ16(CSIPLL0);
switch (ddrpll & 0xff) {
case 0xc:
dev_priv->mem_freq = 800;
break;
case 0x10:
dev_priv->mem_freq = 1066;
break;
case 0x14:
dev_priv->mem_freq = 1333;
break;
case 0x18:
dev_priv->mem_freq = 1600;
break;
default:
DRM_DEBUG("unknown memory frequency 0x%02x\n",
ddrpll & 0xff);
dev_priv->mem_freq = 0;
break;
}
dev_priv->r_t = dev_priv->mem_freq;
switch (csipll & 0x3ff) {
case 0x00c:
dev_priv->fsb_freq = 3200;
break;
case 0x00e:
dev_priv->fsb_freq = 3733;
break;
case 0x010:
dev_priv->fsb_freq = 4266;
break;
case 0x012:
dev_priv->fsb_freq = 4800;
break;
case 0x014:
dev_priv->fsb_freq = 5333;
break;
case 0x016:
dev_priv->fsb_freq = 5866;
break;
case 0x018:
dev_priv->fsb_freq = 6400;
break;
default:
DRM_DEBUG("unknown fsb frequency 0x%04x\n",
csipll & 0x3ff);
dev_priv->fsb_freq = 0;
break;
}
if (dev_priv->fsb_freq == 3200) {
dev_priv->c_m = 0;
} else if (dev_priv->fsb_freq > 3200 && dev_priv->fsb_freq <= 4800) {
dev_priv->c_m = 1;
} else {
dev_priv->c_m = 2;
}
}
static const struct cparams {
u16 i;
u16 t;
u16 m;
u16 c;
} cparams[] = {
{ 1, 1333, 301, 28664 },
{ 1, 1066, 294, 24460 },
{ 1, 800, 294, 25192 },
{ 0, 1333, 276, 27605 },
{ 0, 1066, 276, 27605 },
{ 0, 800, 231, 23784 },
};
unsigned long i915_chipset_val(struct drm_i915_private *dev_priv)
{
u64 total_count, diff, ret;
u32 count1, count2, count3, m = 0, c = 0;
unsigned long now = jiffies_to_msecs(jiffies), diff1;
int i;
diff1 = now - dev_priv->last_time1;
/*
* sysctl(8) reads the value of sysctl twice in rapid
* succession. There is high chance that it happens in the
* same timer tick. Use the cached value to not divide by
* zero and give the hw a chance to gather more samples.
*/
if (diff1 <= 10)
return (dev_priv->chipset_power);
count1 = I915_READ(DMIEC);
count2 = I915_READ(DDREC);
count3 = I915_READ(CSIEC);
total_count = count1 + count2 + count3;
/* FIXME: handle per-counter overflow */
if (total_count < dev_priv->last_count1) {
diff = ~0UL - dev_priv->last_count1;
diff += total_count;
} else {
diff = total_count - dev_priv->last_count1;
}
for (i = 0; i < DRM_ARRAY_SIZE(cparams); i++) {
if (cparams[i].i == dev_priv->c_m &&
cparams[i].t == dev_priv->r_t) {
m = cparams[i].m;
c = cparams[i].c;
break;
}
}
diff = diff / diff1;
ret = ((m * diff) + c);
ret = ret / 10;
dev_priv->last_count1 = total_count;
dev_priv->last_time1 = now;
dev_priv->chipset_power = ret;
return (ret);
}
unsigned long i915_mch_val(struct drm_i915_private *dev_priv)
{
unsigned long m, x, b;
u32 tsfs;
tsfs = I915_READ(TSFS);
m = ((tsfs & TSFS_SLOPE_MASK) >> TSFS_SLOPE_SHIFT);
x = I915_READ8(I915_TR1);
b = tsfs & TSFS_INTR_MASK;
return ((m * x) / 127) - b;
}
static u16 pvid_to_extvid(struct drm_i915_private *dev_priv, u8 pxvid)
{
static const struct v_table {
u16 vd; /* in .1 mil */
u16 vm; /* in .1 mil */
} v_table[] = {
{ 0, 0, },
{ 375, 0, },
{ 500, 0, },
{ 625, 0, },
{ 750, 0, },
{ 875, 0, },
{ 1000, 0, },
{ 1125, 0, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4125, 3000, },
{ 4250, 3125, },
{ 4375, 3250, },
{ 4500, 3375, },
{ 4625, 3500, },
{ 4750, 3625, },
{ 4875, 3750, },
{ 5000, 3875, },
{ 5125, 4000, },
{ 5250, 4125, },
{ 5375, 4250, },
{ 5500, 4375, },
{ 5625, 4500, },
{ 5750, 4625, },
{ 5875, 4750, },
{ 6000, 4875, },
{ 6125, 5000, },
{ 6250, 5125, },
{ 6375, 5250, },
{ 6500, 5375, },
{ 6625, 5500, },
{ 6750, 5625, },
{ 6875, 5750, },
{ 7000, 5875, },
{ 7125, 6000, },
{ 7250, 6125, },
{ 7375, 6250, },
{ 7500, 6375, },
{ 7625, 6500, },
{ 7750, 6625, },
{ 7875, 6750, },
{ 8000, 6875, },
{ 8125, 7000, },
{ 8250, 7125, },
{ 8375, 7250, },
{ 8500, 7375, },
{ 8625, 7500, },
{ 8750, 7625, },
{ 8875, 7750, },
{ 9000, 7875, },
{ 9125, 8000, },
{ 9250, 8125, },
{ 9375, 8250, },
{ 9500, 8375, },
{ 9625, 8500, },
{ 9750, 8625, },
{ 9875, 8750, },
{ 10000, 8875, },
{ 10125, 9000, },
{ 10250, 9125, },
{ 10375, 9250, },
{ 10500, 9375, },
{ 10625, 9500, },
{ 10750, 9625, },
{ 10875, 9750, },
{ 11000, 9875, },
{ 11125, 10000, },
{ 11250, 10125, },
{ 11375, 10250, },
{ 11500, 10375, },
{ 11625, 10500, },
{ 11750, 10625, },
{ 11875, 10750, },
{ 12000, 10875, },
{ 12125, 11000, },
{ 12250, 11125, },
{ 12375, 11250, },
{ 12500, 11375, },
{ 12625, 11500, },
{ 12750, 11625, },
{ 12875, 11750, },
{ 13000, 11875, },
{ 13125, 12000, },
{ 13250, 12125, },
{ 13375, 12250, },
{ 13500, 12375, },
{ 13625, 12500, },
{ 13750, 12625, },
{ 13875, 12750, },
{ 14000, 12875, },
{ 14125, 13000, },
{ 14250, 13125, },
{ 14375, 13250, },
{ 14500, 13375, },
{ 14625, 13500, },
{ 14750, 13625, },
{ 14875, 13750, },
{ 15000, 13875, },
{ 15125, 14000, },
{ 15250, 14125, },
{ 15375, 14250, },
{ 15500, 14375, },
{ 15625, 14500, },
{ 15750, 14625, },
{ 15875, 14750, },
{ 16000, 14875, },
{ 16125, 15000, },
};
if (dev_priv->info->is_mobile)
return v_table[pxvid].vm;
else
return v_table[pxvid].vd;
}
void i915_update_gfx_val(struct drm_i915_private *dev_priv)
{
struct timespec now, diff1;
u64 diff;
unsigned long diffms;
u32 count;
if (dev_priv->info->gen != 5)
return;
nanotime(&now);
diff1 = now;
timespecsub(&diff1, &dev_priv->last_time2);
/* Don't divide by 0 */
diffms = diff1.tv_sec * 1000 + diff1.tv_nsec / 1000000;
if (!diffms)
return;
count = I915_READ(GFXEC);
if (count < dev_priv->last_count2) {
diff = ~0UL - dev_priv->last_count2;
diff += count;
} else {
diff = count - dev_priv->last_count2;
}
dev_priv->last_count2 = count;
dev_priv->last_time2 = now;
/* More magic constants... */
diff = diff * 1181;
diff = diff / (diffms * 10);
dev_priv->gfx_power = diff;
}
unsigned long i915_gfx_val(struct drm_i915_private *dev_priv)
{
unsigned long t, corr, state1, corr2, state2;
u32 pxvid, ext_v;
pxvid = I915_READ(PXVFREQ_BASE + (dev_priv->cur_delay * 4));
pxvid = (pxvid >> 24) & 0x7f;
ext_v = pvid_to_extvid(dev_priv, pxvid);
state1 = ext_v;
t = i915_mch_val(dev_priv);
/* Revel in the empirically derived constants */
/* Correction factor in 1/100000 units */
if (t > 80)
corr = ((t * 2349) + 135940);
else if (t >= 50)
corr = ((t * 964) + 29317);
else /* < 50 */
corr = ((t * 301) + 1004);
corr = corr * ((150142 * state1) / 10000 - 78642);
corr /= 100000;
corr2 = (corr * dev_priv->corr);
state2 = (corr2 * state1) / 10000;
state2 /= 100; /* convert to mW */
i915_update_gfx_val(dev_priv);
return dev_priv->gfx_power + state2;
}
/**
* i915_read_mch_val - return value for IPS use
*
* Calculate and return a value for the IPS driver to use when deciding whether
* we have thermal and power headroom to increase CPU or GPU power budget.
*/
unsigned long i915_read_mch_val(void)
{
struct drm_i915_private *dev_priv;
unsigned long chipset_val, graphics_val, ret = 0;
mtx_lock(&mchdev_lock);
if (!i915_mch_dev)
goto out_unlock;
dev_priv = i915_mch_dev;
chipset_val = i915_chipset_val(dev_priv);
graphics_val = i915_gfx_val(dev_priv);
ret = chipset_val + graphics_val;
out_unlock:
mtx_unlock(&mchdev_lock);
return ret;
}
/**
* i915_gpu_raise - raise GPU frequency limit
*
* Raise the limit; IPS indicates we have thermal headroom.
*/
bool i915_gpu_raise(void)
{
struct drm_i915_private *dev_priv;
bool ret = true;
mtx_lock(&mchdev_lock);
if (!i915_mch_dev) {
ret = false;
goto out_unlock;
}
dev_priv = i915_mch_dev;
if (dev_priv->max_delay > dev_priv->fmax)
dev_priv->max_delay--;
out_unlock:
mtx_unlock(&mchdev_lock);
return ret;
}
/**
* i915_gpu_lower - lower GPU frequency limit
*
* IPS indicates we're close to a thermal limit, so throttle back the GPU
* frequency maximum.
*/
bool i915_gpu_lower(void)
{
struct drm_i915_private *dev_priv;
bool ret = true;
mtx_lock(&mchdev_lock);
if (!i915_mch_dev) {
ret = false;
goto out_unlock;
}
dev_priv = i915_mch_dev;
if (dev_priv->max_delay < dev_priv->min_delay)
dev_priv->max_delay++;
out_unlock:
mtx_unlock(&mchdev_lock);
return ret;
}
/**
* i915_gpu_busy - indicate GPU business to IPS
*
* Tell the IPS driver whether or not the GPU is busy.
*/
bool i915_gpu_busy(void)
{
struct drm_i915_private *dev_priv;
bool ret = false;
mtx_lock(&mchdev_lock);
if (!i915_mch_dev)
goto out_unlock;
dev_priv = i915_mch_dev;
ret = dev_priv->busy;
out_unlock:
mtx_unlock(&mchdev_lock);
return ret;
}
/**
* i915_gpu_turbo_disable - disable graphics turbo
*
* Disable graphics turbo by resetting the max frequency and setting the
* current frequency to the default.
*/
bool i915_gpu_turbo_disable(void)
{
struct drm_i915_private *dev_priv;
bool ret = true;
mtx_lock(&mchdev_lock);
if (!i915_mch_dev) {
ret = false;
goto out_unlock;
}
dev_priv = i915_mch_dev;
dev_priv->max_delay = dev_priv->fstart;
if (!ironlake_set_drps(dev_priv->dev, dev_priv->fstart))
ret = false;
out_unlock:
mtx_unlock(&mchdev_lock);
return ret;
}