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kolibrios/drivers/video/drm/i915/i915_dma.c
Sergey Semyonov (Serge) d2905e7c3f i915-4.5.7 
git-svn-id: svn://kolibrios.org@6937 a494cfbc-eb01-0410-851d-a64ba20cac60
2017-07-28 20:01:47 +00:00

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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.
*
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_legacy.h>
#include "intel_drv.h"
#include <drm/i915_drm.h>
#include "i915_drv.h"
#include "i915_vgpu.h"
#include "i915_trace.h"
#include <linux/pci.h>
#include <linux/vgaarb.h>
#include <linux/acpi.h>
//#include <linux/pnp.h>
//#include <linux/vga_switcheroo.h>
#include <linux/slab.h>
//#include <acpi/video.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen);
int i915_getparam(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_i915_private *dev_priv = dev->dev_private;
drm_i915_getparam_t *param = data;
int value;
switch (param->param) {
case I915_PARAM_IRQ_ACTIVE:
case I915_PARAM_ALLOW_BATCHBUFFER:
case I915_PARAM_LAST_DISPATCH:
/* Reject all old ums/dri params. */
return -ENODEV;
case I915_PARAM_CHIPSET_ID:
value = dev->pdev->device;
break;
case I915_PARAM_REVISION:
value = dev->pdev->revision;
break;
case I915_PARAM_HAS_GEM:
value = 1;
break;
case I915_PARAM_NUM_FENCES_AVAIL:
value = dev_priv->num_fence_regs;
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:
/* depends on GEM */
value = 1;
break;
case I915_PARAM_HAS_BSD:
value = intel_ring_initialized(&dev_priv->ring[VCS]);
break;
case I915_PARAM_HAS_BLT:
value = intel_ring_initialized(&dev_priv->ring[BCS]);
break;
case I915_PARAM_HAS_VEBOX:
value = intel_ring_initialized(&dev_priv->ring[VECS]);
break;
case I915_PARAM_HAS_BSD2:
value = intel_ring_initialized(&dev_priv->ring[VCS2]);
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;
case I915_PARAM_HAS_WT:
value = HAS_WT(dev);
break;
case I915_PARAM_HAS_ALIASING_PPGTT:
value = USES_PPGTT(dev);
break;
case I915_PARAM_HAS_WAIT_TIMEOUT:
value = 1;
break;
case I915_PARAM_HAS_SEMAPHORES:
value = i915_semaphore_is_enabled(dev);
break;
case I915_PARAM_HAS_PRIME_VMAP_FLUSH:
value = 1;
break;
case I915_PARAM_HAS_SECURE_BATCHES:
value = capable(CAP_SYS_ADMIN);
break;
case I915_PARAM_HAS_PINNED_BATCHES:
value = 1;
break;
case I915_PARAM_HAS_EXEC_NO_RELOC:
value = 1;
break;
case I915_PARAM_HAS_EXEC_HANDLE_LUT:
value = 1;
break;
case I915_PARAM_CMD_PARSER_VERSION:
value = i915_cmd_parser_get_version();
break;
case I915_PARAM_HAS_COHERENT_PHYS_GTT:
value = 1;
break;
case I915_PARAM_MMAP_VERSION:
value = 1;
break;
case I915_PARAM_SUBSLICE_TOTAL:
value = INTEL_INFO(dev)->subslice_total;
if (!value)
return -ENODEV;
break;
case I915_PARAM_EU_TOTAL:
value = INTEL_INFO(dev)->eu_total;
if (!value)
return -ENODEV;
break;
case I915_PARAM_HAS_GPU_RESET:
value = i915.enable_hangcheck &&
intel_has_gpu_reset(dev);
break;
case I915_PARAM_HAS_RESOURCE_STREAMER:
value = HAS_RESOURCE_STREAMER(dev);
break;
default:
DRM_DEBUG("Unknown parameter %d\n", param->param);
return -EINVAL;
}
*param->value = value;
return 0;
}
static int i915_get_bridge_dev(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
dev_priv->bridge_dev = _pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
if (!dev_priv->bridge_dev) {
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)
/* Setup MCHBAR if possible, return true if we should disable it again */
static void
intel_setup_mchbar(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
u32 temp;
bool enabled;
if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev))
return;
dev_priv->mchbar_need_disable = false;
if (IS_I915G(dev) || IS_I915GM(dev)) {
pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
enabled = !!(temp & DEVEN_MCHBAR_EN);
} else {
pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
enabled = temp & 1;
}
/* If it's already enabled, don't have to do anything */
if (enabled)
return;
/*
if (intel_alloc_mchbar_resource(dev))
return;
God help us all
*/
dev_priv->mchbar_need_disable = true;
/* Space is allocated or reserved, so enable it. */
if (IS_I915G(dev) || IS_I915GM(dev)) {
pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG,
temp | DEVEN_MCHBAR_EN);
} else {
pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1);
}
}
static void
intel_teardown_mchbar(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
int mchbar_reg = INTEL_INFO(dev)->gen >= 4 ? MCHBAR_I965 : MCHBAR_I915;
u32 temp;
if (dev_priv->mchbar_need_disable) {
if (IS_I915G(dev) || IS_I915GM(dev)) {
pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
temp &= ~DEVEN_MCHBAR_EN;
pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG, temp);
} else {
pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
temp &= ~1;
pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp);
}
}
if (dev_priv->mch_res.start)
release_resource(&dev_priv->mch_res);
}
/* true = enable decode, false = disable decoder */
static unsigned int i915_vga_set_decode(void *cookie, bool state)
{
struct drm_device *dev = cookie;
intel_modeset_vga_set_state(dev, state);
if (state)
return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
else
return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
}
static int i915_load_modeset_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
int ret;
ret = intel_bios_init(dev_priv);
if (ret)
DRM_INFO("failed to find VBIOS tables\n");
/* If we have > 1 VGA cards, then we need to arbitrate access
* to the common VGA resources.
*
* If we are a secondary display controller (!PCI_DISPLAY_CLASS_VGA),
* then we do not take part in VGA arbitration and the
* vga_client_register() fails with -ENODEV.
*/
/* Initialise stolen first so that we may reserve preallocated
* objects for the BIOS to KMS transition.
*/
ret = i915_gem_init_stolen(dev);
if (ret)
goto cleanup_vga_switcheroo;
intel_power_domains_init_hw(dev_priv, false);
intel_csr_ucode_init(dev_priv);
ret = intel_irq_install(dev_priv);
if (ret)
goto cleanup_gem_stolen;
intel_setup_gmbus(dev);
/* Important: The output setup functions called by modeset_init need
* working irqs for e.g. gmbus and dp aux transfers. */
intel_modeset_init(dev);
intel_guc_ucode_init(dev);
ret = i915_gem_init(dev);
if (ret)
goto cleanup_irq;
intel_modeset_gem_init(dev);
/* Always safe in the mode setting case. */
/* FIXME: do pre/post-mode set stuff in core KMS code */
dev->vblank_disable_allowed = true;
if (INTEL_INFO(dev)->num_pipes == 0)
return 0;
ret = intel_fbdev_init(dev);
if (ret)
goto cleanup_gem;
/* Only enable hotplug handling once the fbdev is fully set up. */
intel_hpd_init(dev_priv);
/*
* Some ports require correctly set-up hpd registers for detection to
* work properly (leading to ghost connected connector status), e.g. VGA
* on gm45. Hence we can only set up the initial fbdev config after hpd
* irqs are fully enabled. Now we should scan for the initial config
* only once hotplug handling is enabled, but due to screwed-up locking
* around kms/fbdev init we can't protect the fdbev initial config
* scanning against hotplug events. Hence do this first and ignore the
* tiny window where we will loose hotplug notifactions.
*/
intel_fbdev_initial_config(dev_priv, 0);
drm_kms_helper_poll_init(dev);
return 0;
cleanup_gem:
mutex_lock(&dev->struct_mutex);
i915_gem_cleanup_ringbuffer(dev);
i915_gem_context_fini(dev);
mutex_unlock(&dev->struct_mutex);
cleanup_irq:
intel_guc_ucode_fini(dev);
// drm_irq_uninstall(dev);
cleanup_gem_stolen:
i915_gem_cleanup_stolen(dev);
cleanup_vga_switcheroo:
// vga_switcheroo_unregister_client(dev->pdev);
cleanup_vga_client:
// vga_client_register(dev->pdev, NULL, NULL, NULL);
out:
return ret;
}
#if IS_ENABLED(CONFIG_FB)
static int i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
{
struct apertures_struct *ap;
struct pci_dev *pdev = dev_priv->dev->pdev;
bool primary;
int ret;
ap = alloc_apertures(1);
if (!ap)
return -ENOMEM;
ap->ranges[0].base = dev_priv->gtt.mappable_base;
ap->ranges[0].size = dev_priv->gtt.mappable_end;
primary =
pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
ret = remove_conflicting_framebuffers(ap, "inteldrmfb", primary);
kfree(ap);
return ret;
}
#else
static int i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
{
return 0;
}
#endif
#if !defined(CONFIG_VGA_CONSOLE)
static int i915_kick_out_vgacon(struct drm_i915_private *dev_priv)
{
return 0;
}
#elif !defined(CONFIG_DUMMY_CONSOLE)
static int i915_kick_out_vgacon(struct drm_i915_private *dev_priv)
{
return -ENODEV;
}
#else
static int i915_kick_out_vgacon(struct drm_i915_private *dev_priv)
{
int ret = 0;
DRM_INFO("Replacing VGA console driver\n");
console_lock();
if (con_is_bound(&vga_con))
ret = do_take_over_console(&dummy_con, 0, MAX_NR_CONSOLES - 1, 1);
if (ret == 0) {
ret = do_unregister_con_driver(&vga_con);
/* Ignore "already unregistered". */
if (ret == -ENODEV)
ret = 0;
}
console_unlock();
return ret;
}
#endif
static void i915_dump_device_info(struct drm_i915_private *dev_priv)
{
const struct intel_device_info *info = &dev_priv->info;
#define PRINT_S(name) "%s"
#define SEP_EMPTY
#define PRINT_FLAG(name) info->name ? #name "," : ""
#define SEP_COMMA ,
DRM_DEBUG_DRIVER("i915 device info: gen=%i, pciid=0x%04x rev=0x%02x flags="
DEV_INFO_FOR_EACH_FLAG(PRINT_S, SEP_EMPTY),
info->gen,
dev_priv->dev->pdev->device,
dev_priv->dev->pdev->revision,
DEV_INFO_FOR_EACH_FLAG(PRINT_FLAG, SEP_COMMA));
#undef PRINT_S
#undef SEP_EMPTY
#undef PRINT_FLAG
#undef SEP_COMMA
}
static void cherryview_sseu_info_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_device_info *info;
u32 fuse, eu_dis;
info = (struct intel_device_info *)&dev_priv->info;
fuse = I915_READ(CHV_FUSE_GT);
info->slice_total = 1;
if (!(fuse & CHV_FGT_DISABLE_SS0)) {
info->subslice_per_slice++;
eu_dis = fuse & (CHV_FGT_EU_DIS_SS0_R0_MASK |
CHV_FGT_EU_DIS_SS0_R1_MASK);
info->eu_total += 8 - hweight32(eu_dis);
}
if (!(fuse & CHV_FGT_DISABLE_SS1)) {
info->subslice_per_slice++;
eu_dis = fuse & (CHV_FGT_EU_DIS_SS1_R0_MASK |
CHV_FGT_EU_DIS_SS1_R1_MASK);
info->eu_total += 8 - hweight32(eu_dis);
}
info->subslice_total = info->subslice_per_slice;
/*
* CHV expected to always have a uniform distribution of EU
* across subslices.
*/
info->eu_per_subslice = info->subslice_total ?
info->eu_total / info->subslice_total :
0;
/*
* CHV supports subslice power gating on devices with more than
* one subslice, and supports EU power gating on devices with
* more than one EU pair per subslice.
*/
info->has_slice_pg = 0;
info->has_subslice_pg = (info->subslice_total > 1);
info->has_eu_pg = (info->eu_per_subslice > 2);
}
static void gen9_sseu_info_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_device_info *info;
int s_max = 3, ss_max = 4, eu_max = 8;
int s, ss;
u32 fuse2, s_enable, ss_disable, eu_disable;
u8 eu_mask = 0xff;
info = (struct intel_device_info *)&dev_priv->info;
fuse2 = I915_READ(GEN8_FUSE2);
s_enable = (fuse2 & GEN8_F2_S_ENA_MASK) >>
GEN8_F2_S_ENA_SHIFT;
ss_disable = (fuse2 & GEN9_F2_SS_DIS_MASK) >>
GEN9_F2_SS_DIS_SHIFT;
info->slice_total = hweight32(s_enable);
/*
* The subslice disable field is global, i.e. it applies
* to each of the enabled slices.
*/
info->subslice_per_slice = ss_max - hweight32(ss_disable);
info->subslice_total = info->slice_total *
info->subslice_per_slice;
/*
* Iterate through enabled slices and subslices to
* count the total enabled EU.
*/
for (s = 0; s < s_max; s++) {
if (!(s_enable & (0x1 << s)))
/* skip disabled slice */
continue;
eu_disable = I915_READ(GEN9_EU_DISABLE(s));
for (ss = 0; ss < ss_max; ss++) {
int eu_per_ss;
if (ss_disable & (0x1 << ss))
/* skip disabled subslice */
continue;
eu_per_ss = eu_max - hweight8((eu_disable >> (ss*8)) &
eu_mask);
/*
* Record which subslice(s) has(have) 7 EUs. we
* can tune the hash used to spread work among
* subslices if they are unbalanced.
*/
if (eu_per_ss == 7)
info->subslice_7eu[s] |= 1 << ss;
info->eu_total += eu_per_ss;
}
}
/*
* SKL is expected to always have a uniform distribution
* of EU across subslices with the exception that any one
* EU in any one subslice may be fused off for die
* recovery. BXT is expected to be perfectly uniform in EU
* distribution.
*/
info->eu_per_subslice = info->subslice_total ?
DIV_ROUND_UP(info->eu_total,
info->subslice_total) : 0;
/*
* SKL supports slice power gating on devices with more than
* one slice, and supports EU power gating on devices with
* more than one EU pair per subslice. BXT supports subslice
* power gating on devices with more than one subslice, and
* supports EU power gating on devices with more than one EU
* pair per subslice.
*/
info->has_slice_pg = ((IS_SKYLAKE(dev) || IS_KABYLAKE(dev)) &&
(info->slice_total > 1));
info->has_subslice_pg = (IS_BROXTON(dev) && (info->subslice_total > 1));
info->has_eu_pg = (info->eu_per_subslice > 2);
}
static void broadwell_sseu_info_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_device_info *info;
const int s_max = 3, ss_max = 3, eu_max = 8;
int s, ss;
u32 fuse2, eu_disable[s_max], s_enable, ss_disable;
fuse2 = I915_READ(GEN8_FUSE2);
s_enable = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
ss_disable = (fuse2 & GEN8_F2_SS_DIS_MASK) >> GEN8_F2_SS_DIS_SHIFT;
eu_disable[0] = I915_READ(GEN8_EU_DISABLE0) & GEN8_EU_DIS0_S0_MASK;
eu_disable[1] = (I915_READ(GEN8_EU_DISABLE0) >> GEN8_EU_DIS0_S1_SHIFT) |
((I915_READ(GEN8_EU_DISABLE1) & GEN8_EU_DIS1_S1_MASK) <<
(32 - GEN8_EU_DIS0_S1_SHIFT));
eu_disable[2] = (I915_READ(GEN8_EU_DISABLE1) >> GEN8_EU_DIS1_S2_SHIFT) |
((I915_READ(GEN8_EU_DISABLE2) & GEN8_EU_DIS2_S2_MASK) <<
(32 - GEN8_EU_DIS1_S2_SHIFT));
info = (struct intel_device_info *)&dev_priv->info;
info->slice_total = hweight32(s_enable);
/*
* The subslice disable field is global, i.e. it applies
* to each of the enabled slices.
*/
info->subslice_per_slice = ss_max - hweight32(ss_disable);
info->subslice_total = info->slice_total * info->subslice_per_slice;
/*
* Iterate through enabled slices and subslices to
* count the total enabled EU.
*/
for (s = 0; s < s_max; s++) {
if (!(s_enable & (0x1 << s)))
/* skip disabled slice */
continue;
for (ss = 0; ss < ss_max; ss++) {
u32 n_disabled;
if (ss_disable & (0x1 << ss))
/* skip disabled subslice */
continue;
n_disabled = hweight8(eu_disable[s] >> (ss * eu_max));
/*
* Record which subslices have 7 EUs.
*/
if (eu_max - n_disabled == 7)
info->subslice_7eu[s] |= 1 << ss;
info->eu_total += eu_max - n_disabled;
}
}
/*
* BDW is expected to always have a uniform distribution of EU across
* subslices with the exception that any one EU in any one subslice may
* be fused off for die recovery.
*/
info->eu_per_subslice = info->subslice_total ?
DIV_ROUND_UP(info->eu_total, info->subslice_total) : 0;
/*
* BDW supports slice power gating on devices with more than
* one slice.
*/
info->has_slice_pg = (info->slice_total > 1);
info->has_subslice_pg = 0;
info->has_eu_pg = 0;
}
/*
* Determine various intel_device_info fields at runtime.
*
* Use it when either:
* - it's judged too laborious to fill n static structures with the limit
* when a simple if statement does the job,
* - run-time checks (eg read fuse/strap registers) are needed.
*
* This function needs to be called:
* - after the MMIO has been setup as we are reading registers,
* - after the PCH has been detected,
* - before the first usage of the fields it can tweak.
*/
static void intel_device_info_runtime_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_device_info *info;
enum pipe pipe;
info = (struct intel_device_info *)&dev_priv->info;
/*
* Skylake and Broxton currently don't expose the topmost plane as its
* use is exclusive with the legacy cursor and we only want to expose
* one of those, not both. Until we can safely expose the topmost plane
* as a DRM_PLANE_TYPE_CURSOR with all the features exposed/supported,
* we don't expose the topmost plane at all to prevent ABI breakage
* down the line.
*/
if (IS_BROXTON(dev)) {
info->num_sprites[PIPE_A] = 2;
info->num_sprites[PIPE_B] = 2;
info->num_sprites[PIPE_C] = 1;
} else if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev))
for_each_pipe(dev_priv, pipe)
info->num_sprites[pipe] = 2;
else
for_each_pipe(dev_priv, pipe)
info->num_sprites[pipe] = 1;
if (i915.disable_display) {
DRM_INFO("Display disabled (module parameter)\n");
info->num_pipes = 0;
} else if (info->num_pipes > 0 &&
(INTEL_INFO(dev)->gen == 7 || INTEL_INFO(dev)->gen == 8) &&
HAS_PCH_SPLIT(dev)) {
u32 fuse_strap = I915_READ(FUSE_STRAP);
u32 sfuse_strap = I915_READ(SFUSE_STRAP);
/*
* SFUSE_STRAP is supposed to have a bit signalling the display
* is fused off. Unfortunately it seems that, at least in
* certain cases, fused off display means that PCH display
* reads don't land anywhere. In that case, we read 0s.
*
* On CPT/PPT, we can detect this case as SFUSE_STRAP_FUSE_LOCK
* should be set when taking over after the firmware.
*/
if (fuse_strap & ILK_INTERNAL_DISPLAY_DISABLE ||
sfuse_strap & SFUSE_STRAP_DISPLAY_DISABLED ||
(dev_priv->pch_type == PCH_CPT &&
!(sfuse_strap & SFUSE_STRAP_FUSE_LOCK))) {
DRM_INFO("Display fused off, disabling\n");
info->num_pipes = 0;
}
}
/* Initialize slice/subslice/EU info */
if (IS_CHERRYVIEW(dev))
cherryview_sseu_info_init(dev);
else if (IS_BROADWELL(dev))
broadwell_sseu_info_init(dev);
else if (INTEL_INFO(dev)->gen >= 9)
gen9_sseu_info_init(dev);
DRM_DEBUG_DRIVER("slice total: %u\n", info->slice_total);
DRM_DEBUG_DRIVER("subslice total: %u\n", info->subslice_total);
DRM_DEBUG_DRIVER("subslice per slice: %u\n", info->subslice_per_slice);
DRM_DEBUG_DRIVER("EU total: %u\n", info->eu_total);
DRM_DEBUG_DRIVER("EU per subslice: %u\n", info->eu_per_subslice);
DRM_DEBUG_DRIVER("has slice power gating: %s\n",
info->has_slice_pg ? "y" : "n");
DRM_DEBUG_DRIVER("has subslice power gating: %s\n",
info->has_subslice_pg ? "y" : "n");
DRM_DEBUG_DRIVER("has EU power gating: %s\n",
info->has_eu_pg ? "y" : "n");
}
static void intel_init_dpio(struct drm_i915_private *dev_priv)
{
/*
* IOSF_PORT_DPIO is used for VLV x2 PHY (DP/HDMI B and C),
* CHV x1 PHY (DP/HDMI D)
* IOSF_PORT_DPIO_2 is used for CHV x2 PHY (DP/HDMI B and C)
*/
if (IS_CHERRYVIEW(dev_priv)) {
DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO_2;
DPIO_PHY_IOSF_PORT(DPIO_PHY1) = IOSF_PORT_DPIO;
} else if (IS_VALLEYVIEW(dev_priv)) {
DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO;
}
}
/**
* i915_driver_load - setup chip and create an initial config
* @dev: DRM device
* @flags: startup flags
*
* The driver load routine has to do several things:
* - drive output discovery via intel_modeset_init()
* - initialize the memory manager
* - allocate initial config memory
* - setup the DRM framebuffer with the allocated memory
*/
int i915_driver_load(struct drm_device *dev, unsigned long flags)
{
struct drm_i915_private *dev_priv;
struct intel_device_info *info, *device_info;
int ret = 0, mmio_bar, mmio_size;
uint32_t aperture_size;
info = (struct intel_device_info *) flags;
dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
if (dev_priv == NULL)
return -ENOMEM;
dev->dev_private = dev_priv;
dev_priv->dev = dev;
/* Setup the write-once "constant" device info */
device_info = (struct intel_device_info *)&dev_priv->info;
memcpy(device_info, info, sizeof(dev_priv->info));
device_info->device_id = dev->pdev->device;
spin_lock_init(&dev_priv->irq_lock);
spin_lock_init(&dev_priv->gpu_error.lock);
mutex_init(&dev_priv->backlight_lock);
spin_lock_init(&dev_priv->uncore.lock);
spin_lock_init(&dev_priv->mm.object_stat_lock);
spin_lock_init(&dev_priv->mmio_flip_lock);
mutex_init(&dev_priv->sb_lock);
mutex_init(&dev_priv->modeset_restore_lock);
mutex_init(&dev_priv->av_mutex);
intel_pm_setup(dev);
intel_runtime_pm_get(dev_priv);
intel_display_crc_init(dev);
i915_dump_device_info(dev_priv);
/* Not all pre-production machines fall into this category, only the
* very first ones. Almost everything should work, except for maybe
* suspend/resume. And we don't implement workarounds that affect only
* pre-production machines. */
if (IS_HSW_EARLY_SDV(dev))
DRM_INFO("This is an early pre-production Haswell machine. "
"It may not be fully functional.\n");
if (i915_get_bridge_dev(dev)) {
ret = -EIO;
goto free_priv;
}
mmio_bar = IS_GEN2(dev) ? 1 : 0;
/* Before gen4, the registers and the GTT are behind different BARs.
* However, from gen4 onwards, the registers and the GTT are shared
* in the same BAR, so we want to restrict this ioremap from
* clobbering the GTT which we want ioremap_wc instead. Fortunately,
* the register BAR remains the same size for all the earlier
* generations up to Ironlake.
*/
if (info->gen < 5)
mmio_size = 512*1024;
else
mmio_size = 2*1024*1024;
dev_priv->regs = pci_iomap(dev->pdev, mmio_bar, mmio_size);
if (!dev_priv->regs) {
DRM_ERROR("failed to map registers\n");
ret = -EIO;
goto put_bridge;
}
set_fake_framebuffer();
/* This must be called before any calls to HAS_PCH_* */
intel_detect_pch(dev);
intel_uncore_init(dev);
ret = i915_gem_gtt_init(dev);
if (ret)
goto out_freecsr;
/* 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 framebuffer drivers\n");
goto out_gtt;
}
ret = i915_kick_out_vgacon(dev_priv);
if (ret) {
DRM_ERROR("failed to remove conflicting VGA console\n");
goto out_gtt;
}
pci_set_master(dev->pdev);
/* 965GM sometimes incorrectly writes to hardware status page (HWS)
* using 32bit addressing, overwriting memory if HWS is located
* above 4GB.
*
* The documentation also mentions an issue with undefined
* behaviour if any general state is accessed within a page above 4GB,
* which also needs to be handled carefully.
*/
aperture_size = dev_priv->gtt.mappable_end;
dev_priv->gtt.mappable = AllocKernelSpace(8192);
if (dev_priv->gtt.mappable == NULL) {
ret = -EIO;
goto out_gtt;
}
/* The i915 workqueue is primarily used for batched retirement of
* requests (and thus managing bo) once the task has been completed
* by the GPU. i915_gem_retire_requests() is called directly when we
* need high-priority retirement, such as waiting for an explicit
* bo.
*
* It is also used for periodic low-priority events, such as
* idle-timers and recording error state.
*
* All tasks on the workqueue are expected to acquire the dev mutex
* so there is no point in running more than one instance of the
* workqueue at any time. Use an ordered one.
*/
dev_priv->wq = alloc_ordered_workqueue("i915", 0);
if (dev_priv->wq == NULL) {
DRM_ERROR("Failed to create our workqueue.\n");
ret = -ENOMEM;
goto out_mtrrfree;
}
system_wq = dev_priv->wq;
dev_priv->hotplug.dp_wq = alloc_ordered_workqueue("i915-dp", 0);
if (dev_priv->hotplug.dp_wq == NULL) {
DRM_ERROR("Failed to create our dp workqueue.\n");
ret = -ENOMEM;
goto out_freewq;
}
intel_irq_init(dev_priv);
intel_uncore_sanitize(dev);
/* Try to make sure MCHBAR is enabled before poking at it */
intel_setup_mchbar(dev);
intel_opregion_setup(dev);
i915_gem_load(dev);
/* 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.
*/
intel_device_info_runtime_init(dev);
intel_init_dpio(dev_priv);
if (INTEL_INFO(dev)->num_pipes) {
ret = drm_vblank_init(dev, INTEL_INFO(dev)->num_pipes);
if (ret)
goto out_gem_unload;
}
intel_power_domains_init(dev_priv);
ret = i915_load_modeset_init(dev);
if (ret < 0) {
DRM_ERROR("failed to init modeset\n");
goto out_power_well;
}
/*
* Notify a valid surface after modesetting,
* when running inside a VM.
*/
if (intel_vgpu_active(dev))
I915_WRITE(vgtif_reg(display_ready), VGT_DRV_DISPLAY_READY);
if (INTEL_INFO(dev)->num_pipes) {
/* Must be done after probing outputs */
intel_opregion_init(dev);
}
if (IS_GEN5(dev))
intel_gpu_ips_init(dev_priv);
// intel_runtime_pm_enable(dev_priv);
main_device = dev;
return 0;
out_power_well:
drm_vblank_cleanup(dev);
out_gem_unload:
out_freewq:
out_mtrrfree:
out_gtt:
i915_global_gtt_cleanup(dev);
out_freecsr:
put_bridge:
free_priv:
kfree(dev_priv);
return ret;
}
#if 0
int i915_driver_unload(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
int ret;
intel_fbdev_fini(dev);
i915_audio_component_cleanup(dev_priv);
ret = i915_gem_suspend(dev);
if (ret) {
DRM_ERROR("failed to idle hardware: %d\n", ret);
return ret;
}
intel_power_domains_fini(dev_priv);
intel_gpu_ips_teardown();
i915_teardown_sysfs(dev);
WARN_ON(unregister_oom_notifier(&dev_priv->mm.oom_notifier));
unregister_shrinker(&dev_priv->mm.shrinker);
io_mapping_free(dev_priv->gtt.mappable);
arch_phys_wc_del(dev_priv->gtt.mtrr);
acpi_video_unregister();
drm_vblank_cleanup(dev);
intel_modeset_cleanup(dev);
/*
* free the memory space allocated for the child device
* config parsed from VBT
*/
if (dev_priv->vbt.child_dev && dev_priv->vbt.child_dev_num) {
kfree(dev_priv->vbt.child_dev);
dev_priv->vbt.child_dev = NULL;
dev_priv->vbt.child_dev_num = 0;
}
kfree(dev_priv->vbt.sdvo_lvds_vbt_mode);
dev_priv->vbt.sdvo_lvds_vbt_mode = NULL;
kfree(dev_priv->vbt.lfp_lvds_vbt_mode);
dev_priv->vbt.lfp_lvds_vbt_mode = NULL;
vga_switcheroo_unregister_client(dev->pdev);
vga_client_register(dev->pdev, NULL, NULL, NULL);
/* Free error state after interrupts are fully disabled. */
cancel_delayed_work_sync(&dev_priv->gpu_error.hangcheck_work);
i915_destroy_error_state(dev);
if (dev->pdev->msi_enabled)
pci_disable_msi(dev->pdev);
intel_opregion_fini(dev);
/* Flush any outstanding unpin_work. */
flush_workqueue(dev_priv->wq);
intel_guc_ucode_fini(dev);
mutex_lock(&dev->struct_mutex);
i915_gem_cleanup_ringbuffer(dev);
i915_gem_context_fini(dev);
mutex_unlock(&dev->struct_mutex);
intel_fbc_cleanup_cfb(dev_priv);
i915_gem_cleanup_stolen(dev);
intel_csr_ucode_fini(dev_priv);
intel_teardown_mchbar(dev);
destroy_workqueue(dev_priv->hotplug.dp_wq);
destroy_workqueue(dev_priv->wq);
destroy_workqueue(dev_priv->gpu_error.hangcheck_wq);
pm_qos_remove_request(&dev_priv->pm_qos);
i915_global_gtt_cleanup(dev);
intel_uncore_fini(dev);
if (dev_priv->regs != NULL)
pci_iounmap(dev->pdev, dev_priv->regs);
kmem_cache_destroy(dev_priv->requests);
kmem_cache_destroy(dev_priv->vmas);
kmem_cache_destroy(dev_priv->objects);
pci_dev_put(dev_priv->bridge_dev);
kfree(dev_priv);
return 0;
}
#endif
int i915_driver_open(struct drm_device *dev, struct drm_file *file)
{
int ret;
ret = i915_gem_open(dev, file);
if (ret)
return ret;
return 0;
}
#if 0
/**
* i915_driver_lastclose - clean up after all DRM clients have exited
* @dev: DRM device
*
* Take care of cleaning up after all DRM clients have exited. In the
* mode setting case, we want to restore the kernel's initial mode (just
* in case the last client left us in a bad state).
*
* Additionally, in the non-mode setting case, we'll tear down the GTT
* and DMA structures, since the kernel won't be using them, and clea
* up any GEM state.
*/
void i915_driver_lastclose(struct drm_device *dev)
{
intel_fbdev_restore_mode(dev);
vga_switcheroo_process_delayed_switch();
}
void i915_driver_preclose(struct drm_device *dev, struct drm_file *file)
{
mutex_lock(&dev->struct_mutex);
i915_gem_context_close(dev, file);
i915_gem_release(dev, file);
mutex_unlock(&dev->struct_mutex);
intel_modeset_preclose(dev, file);
}
void i915_driver_postclose(struct drm_device *dev, struct drm_file *file)
{
struct drm_i915_file_private *file_priv = file->driver_priv;
kfree(file_priv);
}
static int
i915_gem_reject_pin_ioctl(struct drm_device *dev, void *data,
struct drm_file *file)
{
return -ENODEV;
}
const struct drm_ioctl_desc i915_ioctls[] = {
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, drm_noop, 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, 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, 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_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER, i915_gem_execbuffer, DRM_AUTH),
DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2, i915_gem_execbuffer2, DRM_AUTH|DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_PIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
DRM_IOCTL_DEF_DRV(I915_GEM_UNPIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
DRM_IOCTL_DEF_DRV(I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_SET_CACHING, i915_gem_set_caching_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_GET_CACHING, i915_gem_get_caching_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
DRM_IOCTL_DEF_DRV(I915_GEM_CREATE, i915_gem_create_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_MMAP, i915_gem_mmap_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_MMAP_GTT, i915_gem_mmap_gtt_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_SET_TILING, i915_gem_set_tiling, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_GET_TILING, i915_gem_get_tiling, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id, 0),
DRM_IOCTL_DEF_DRV(I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image, DRM_MASTER|DRM_CONTROL_ALLOW),
DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS, intel_overlay_attrs, DRM_MASTER|DRM_CONTROL_ALLOW),
DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY, intel_sprite_set_colorkey, DRM_MASTER|DRM_CONTROL_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_WAIT, i915_gem_wait_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE, i915_gem_context_create_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_DESTROY, i915_gem_context_destroy_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_REG_READ, i915_reg_read_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GET_RESET_STATS, i915_get_reset_stats_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_USERPTR, i915_gem_userptr_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_GETPARAM, i915_gem_context_getparam_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_SETPARAM, i915_gem_context_setparam_ioctl, DRM_RENDER_ALLOW),
};
int i915_max_ioctl = ARRAY_SIZE(i915_ioctls);
#endif
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