415 lines
13 KiB
C
415 lines
13 KiB
C
/*
|
|
* Copyright © 2014 Intel Corporation
|
|
*
|
|
* 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, sublicense,
|
|
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
|
|
*
|
|
* Authors:
|
|
* Vinit Azad <vinit.azad@intel.com>
|
|
* Ben Widawsky <ben@bwidawsk.net>
|
|
* Dave Gordon <david.s.gordon@intel.com>
|
|
* Alex Dai <yu.dai@intel.com>
|
|
*/
|
|
#include "i915_drv.h"
|
|
#include "intel_uc.h"
|
|
|
|
/**
|
|
* DOC: GuC-specific firmware loader
|
|
*
|
|
* intel_guc:
|
|
* Top level structure of guc. It handles firmware loading and manages client
|
|
* pool and doorbells. intel_guc owns a i915_guc_client to replace the legacy
|
|
* ExecList submission.
|
|
*
|
|
* Firmware versioning:
|
|
* The firmware build process will generate a version header file with major and
|
|
* minor version defined. The versions are built into CSS header of firmware.
|
|
* i915 kernel driver set the minimal firmware version required per platform.
|
|
* The firmware installation package will install (symbolic link) proper version
|
|
* of firmware.
|
|
*
|
|
* GuC address space:
|
|
* GuC does not allow any gfx GGTT address that falls into range [0, WOPCM_TOP),
|
|
* which is reserved for Boot ROM, SRAM and WOPCM. Currently this top address is
|
|
* 512K. In order to exclude 0-512K address space from GGTT, all gfx objects
|
|
* used by GuC is pinned with PIN_OFFSET_BIAS along with size of WOPCM.
|
|
*
|
|
*/
|
|
|
|
#define SKL_FW_MAJOR 6
|
|
#define SKL_FW_MINOR 1
|
|
|
|
#define BXT_FW_MAJOR 8
|
|
#define BXT_FW_MINOR 7
|
|
|
|
#define KBL_FW_MAJOR 9
|
|
#define KBL_FW_MINOR 14
|
|
|
|
#define GUC_FW_PATH(platform, major, minor) \
|
|
"i915/" __stringify(platform) "_guc_ver" __stringify(major) "_" __stringify(minor) ".bin"
|
|
|
|
#define I915_SKL_GUC_UCODE GUC_FW_PATH(skl, SKL_FW_MAJOR, SKL_FW_MINOR)
|
|
MODULE_FIRMWARE(I915_SKL_GUC_UCODE);
|
|
|
|
#define I915_BXT_GUC_UCODE GUC_FW_PATH(bxt, BXT_FW_MAJOR, BXT_FW_MINOR)
|
|
MODULE_FIRMWARE(I915_BXT_GUC_UCODE);
|
|
|
|
#define I915_KBL_GUC_UCODE GUC_FW_PATH(kbl, KBL_FW_MAJOR, KBL_FW_MINOR)
|
|
MODULE_FIRMWARE(I915_KBL_GUC_UCODE);
|
|
|
|
|
|
static u32 get_gttype(struct drm_i915_private *dev_priv)
|
|
{
|
|
/* XXX: GT type based on PCI device ID? field seems unused by fw */
|
|
return 0;
|
|
}
|
|
|
|
static u32 get_core_family(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 gen = INTEL_GEN(dev_priv);
|
|
|
|
switch (gen) {
|
|
case 9:
|
|
return GFXCORE_FAMILY_GEN9;
|
|
|
|
default:
|
|
WARN(1, "GEN%d does not support GuC operation!\n", gen);
|
|
return GFXCORE_FAMILY_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Initialise the GuC parameter block before starting the firmware
|
|
* transfer. These parameters are read by the firmware on startup
|
|
* and cannot be changed thereafter.
|
|
*/
|
|
static void guc_params_init(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct intel_guc *guc = &dev_priv->guc;
|
|
u32 params[GUC_CTL_MAX_DWORDS];
|
|
int i;
|
|
|
|
memset(¶ms, 0, sizeof(params));
|
|
|
|
params[GUC_CTL_DEVICE_INFO] |=
|
|
(get_gttype(dev_priv) << GUC_CTL_GTTYPE_SHIFT) |
|
|
(get_core_family(dev_priv) << GUC_CTL_COREFAMILY_SHIFT);
|
|
|
|
/*
|
|
* GuC ARAT increment is 10 ns. GuC default scheduler quantum is one
|
|
* second. This ARAR is calculated by:
|
|
* Scheduler-Quantum-in-ns / ARAT-increment-in-ns = 1000000000 / 10
|
|
*/
|
|
params[GUC_CTL_ARAT_HIGH] = 0;
|
|
params[GUC_CTL_ARAT_LOW] = 100000000;
|
|
|
|
params[GUC_CTL_WA] |= GUC_CTL_WA_UK_BY_DRIVER;
|
|
|
|
params[GUC_CTL_FEATURE] |= GUC_CTL_DISABLE_SCHEDULER |
|
|
GUC_CTL_VCS2_ENABLED;
|
|
|
|
params[GUC_CTL_LOG_PARAMS] = guc->log.flags;
|
|
|
|
if (i915.guc_log_level >= 0) {
|
|
params[GUC_CTL_DEBUG] =
|
|
i915.guc_log_level << GUC_LOG_VERBOSITY_SHIFT;
|
|
} else
|
|
params[GUC_CTL_DEBUG] = GUC_LOG_DISABLED;
|
|
|
|
/* If GuC submission is enabled, set up additional parameters here */
|
|
if (i915.enable_guc_submission) {
|
|
u32 ads = guc_ggtt_offset(guc->ads_vma) >> PAGE_SHIFT;
|
|
u32 pgs = guc_ggtt_offset(dev_priv->guc.stage_desc_pool);
|
|
u32 ctx_in_16 = GUC_MAX_STAGE_DESCRIPTORS / 16;
|
|
|
|
params[GUC_CTL_DEBUG] |= ads << GUC_ADS_ADDR_SHIFT;
|
|
params[GUC_CTL_DEBUG] |= GUC_ADS_ENABLED;
|
|
|
|
pgs >>= PAGE_SHIFT;
|
|
params[GUC_CTL_CTXINFO] = (pgs << GUC_CTL_BASE_ADDR_SHIFT) |
|
|
(ctx_in_16 << GUC_CTL_CTXNUM_IN16_SHIFT);
|
|
|
|
params[GUC_CTL_FEATURE] |= GUC_CTL_KERNEL_SUBMISSIONS;
|
|
|
|
/* Unmask this bit to enable the GuC's internal scheduler */
|
|
params[GUC_CTL_FEATURE] &= ~GUC_CTL_DISABLE_SCHEDULER;
|
|
}
|
|
|
|
I915_WRITE(SOFT_SCRATCH(0), 0);
|
|
|
|
for (i = 0; i < GUC_CTL_MAX_DWORDS; i++)
|
|
I915_WRITE(SOFT_SCRATCH(1 + i), params[i]);
|
|
}
|
|
|
|
/*
|
|
* Read the GuC status register (GUC_STATUS) and store it in the
|
|
* specified location; then return a boolean indicating whether
|
|
* the value matches either of two values representing completion
|
|
* of the GuC boot process.
|
|
*
|
|
* This is used for polling the GuC status in a wait_for()
|
|
* loop below.
|
|
*/
|
|
static inline bool guc_ucode_response(struct drm_i915_private *dev_priv,
|
|
u32 *status)
|
|
{
|
|
u32 val = I915_READ(GUC_STATUS);
|
|
u32 uk_val = val & GS_UKERNEL_MASK;
|
|
*status = val;
|
|
return (uk_val == GS_UKERNEL_READY ||
|
|
((val & GS_MIA_CORE_STATE) && uk_val == GS_UKERNEL_LAPIC_DONE));
|
|
}
|
|
|
|
/*
|
|
* Transfer the firmware image to RAM for execution by the microcontroller.
|
|
*
|
|
* Architecturally, the DMA engine is bidirectional, and can potentially even
|
|
* transfer between GTT locations. This functionality is left out of the API
|
|
* for now as there is no need for it.
|
|
*
|
|
* Note that GuC needs the CSS header plus uKernel code to be copied by the
|
|
* DMA engine in one operation, whereas the RSA signature is loaded via MMIO.
|
|
*/
|
|
static int guc_ucode_xfer_dma(struct drm_i915_private *dev_priv,
|
|
struct i915_vma *vma)
|
|
{
|
|
struct intel_uc_fw *guc_fw = &dev_priv->guc.fw;
|
|
unsigned long offset;
|
|
struct sg_table *sg = vma->pages;
|
|
u32 status, rsa[UOS_RSA_SCRATCH_MAX_COUNT];
|
|
int i, ret = 0;
|
|
|
|
/* where RSA signature starts */
|
|
offset = guc_fw->rsa_offset;
|
|
|
|
/* Copy RSA signature from the fw image to HW for verification */
|
|
sg_pcopy_to_buffer(sg->sgl, sg->nents, rsa, sizeof(rsa), offset);
|
|
for (i = 0; i < UOS_RSA_SCRATCH_MAX_COUNT; i++)
|
|
I915_WRITE(UOS_RSA_SCRATCH(i), rsa[i]);
|
|
|
|
/* The header plus uCode will be copied to WOPCM via DMA, excluding any
|
|
* other components */
|
|
I915_WRITE(DMA_COPY_SIZE, guc_fw->header_size + guc_fw->ucode_size);
|
|
|
|
/* Set the source address for the new blob */
|
|
offset = guc_ggtt_offset(vma) + guc_fw->header_offset;
|
|
I915_WRITE(DMA_ADDR_0_LOW, lower_32_bits(offset));
|
|
I915_WRITE(DMA_ADDR_0_HIGH, upper_32_bits(offset) & 0xFFFF);
|
|
|
|
/*
|
|
* Set the DMA destination. Current uCode expects the code to be
|
|
* loaded at 8k; locations below this are used for the stack.
|
|
*/
|
|
I915_WRITE(DMA_ADDR_1_LOW, 0x2000);
|
|
I915_WRITE(DMA_ADDR_1_HIGH, DMA_ADDRESS_SPACE_WOPCM);
|
|
|
|
/* Finally start the DMA */
|
|
I915_WRITE(DMA_CTRL, _MASKED_BIT_ENABLE(UOS_MOVE | START_DMA));
|
|
|
|
/*
|
|
* Wait for the DMA to complete & the GuC to start up.
|
|
* NB: Docs recommend not using the interrupt for completion.
|
|
* Measurements indicate this should take no more than 20ms, so a
|
|
* timeout here indicates that the GuC has failed and is unusable.
|
|
* (Higher levels of the driver will attempt to fall back to
|
|
* execlist mode if this happens.)
|
|
*/
|
|
ret = wait_for(guc_ucode_response(dev_priv, &status), 100);
|
|
|
|
DRM_DEBUG_DRIVER("DMA status 0x%x, GuC status 0x%x\n",
|
|
I915_READ(DMA_CTRL), status);
|
|
|
|
if ((status & GS_BOOTROM_MASK) == GS_BOOTROM_RSA_FAILED) {
|
|
DRM_ERROR("GuC firmware signature verification failed\n");
|
|
ret = -ENOEXEC;
|
|
}
|
|
|
|
DRM_DEBUG_DRIVER("returning %d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
u32 intel_guc_wopcm_size(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 wopcm_size = GUC_WOPCM_TOP;
|
|
|
|
/* On BXT, the top of WOPCM is reserved for RC6 context */
|
|
if (IS_GEN9_LP(dev_priv))
|
|
wopcm_size -= BXT_GUC_WOPCM_RC6_RESERVED;
|
|
|
|
return wopcm_size;
|
|
}
|
|
|
|
/*
|
|
* Load the GuC firmware blob into the MinuteIA.
|
|
*/
|
|
static int guc_ucode_xfer(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct intel_uc_fw *guc_fw = &dev_priv->guc.fw;
|
|
struct i915_vma *vma;
|
|
int ret;
|
|
|
|
ret = i915_gem_object_set_to_gtt_domain(guc_fw->obj, false);
|
|
if (ret) {
|
|
DRM_DEBUG_DRIVER("set-domain failed %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
vma = i915_gem_object_ggtt_pin(guc_fw->obj, NULL, 0, 0,
|
|
PIN_OFFSET_BIAS | GUC_WOPCM_TOP);
|
|
if (IS_ERR(vma)) {
|
|
DRM_DEBUG_DRIVER("pin failed %d\n", (int)PTR_ERR(vma));
|
|
return PTR_ERR(vma);
|
|
}
|
|
|
|
intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
|
|
|
|
/* init WOPCM */
|
|
I915_WRITE(GUC_WOPCM_SIZE, intel_guc_wopcm_size(dev_priv));
|
|
I915_WRITE(DMA_GUC_WOPCM_OFFSET, GUC_WOPCM_OFFSET_VALUE);
|
|
|
|
/* Enable MIA caching. GuC clock gating is disabled. */
|
|
I915_WRITE(GUC_SHIM_CONTROL, GUC_SHIM_CONTROL_VALUE);
|
|
|
|
/* WaDisableMinuteIaClockGating:bxt */
|
|
if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1)) {
|
|
I915_WRITE(GUC_SHIM_CONTROL, (I915_READ(GUC_SHIM_CONTROL) &
|
|
~GUC_ENABLE_MIA_CLOCK_GATING));
|
|
}
|
|
|
|
/* WaC6DisallowByGfxPause:bxt */
|
|
if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_B0))
|
|
I915_WRITE(GEN6_GFXPAUSE, 0x30FFF);
|
|
|
|
if (IS_GEN9_LP(dev_priv))
|
|
I915_WRITE(GEN9LP_GT_PM_CONFIG, GT_DOORBELL_ENABLE);
|
|
else
|
|
I915_WRITE(GEN9_GT_PM_CONFIG, GT_DOORBELL_ENABLE);
|
|
|
|
if (IS_GEN9(dev_priv)) {
|
|
/* DOP Clock Gating Enable for GuC clocks */
|
|
I915_WRITE(GEN7_MISCCPCTL, (GEN8_DOP_CLOCK_GATE_GUC_ENABLE |
|
|
I915_READ(GEN7_MISCCPCTL)));
|
|
|
|
/* allows for 5us (in 10ns units) before GT can go to RC6 */
|
|
I915_WRITE(GUC_ARAT_C6DIS, 0x1FF);
|
|
}
|
|
|
|
guc_params_init(dev_priv);
|
|
|
|
ret = guc_ucode_xfer_dma(dev_priv, vma);
|
|
|
|
intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
|
|
|
|
/*
|
|
* We keep the object pages for reuse during resume. But we can unpin it
|
|
* now that DMA has completed, so it doesn't continue to take up space.
|
|
*/
|
|
i915_vma_unpin(vma);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* intel_guc_init_hw() - finish preparing the GuC for activity
|
|
* @guc: intel_guc structure
|
|
*
|
|
* Called during driver loading and also after a GPU reset.
|
|
*
|
|
* The main action required here it to load the GuC uCode into the device.
|
|
* The firmware image should have already been fetched into memory by the
|
|
* earlier call to intel_guc_init(), so here we need only check that
|
|
* worked, and then transfer the image to the h/w.
|
|
*
|
|
* Return: non-zero code on error
|
|
*/
|
|
int intel_guc_init_hw(struct intel_guc *guc)
|
|
{
|
|
struct drm_i915_private *dev_priv = guc_to_i915(guc);
|
|
const char *fw_path = guc->fw.path;
|
|
int ret;
|
|
|
|
DRM_DEBUG_DRIVER("GuC fw status: path %s, fetch %s, load %s\n",
|
|
fw_path,
|
|
intel_uc_fw_status_repr(guc->fw.fetch_status),
|
|
intel_uc_fw_status_repr(guc->fw.load_status));
|
|
|
|
if (guc->fw.fetch_status != INTEL_UC_FIRMWARE_SUCCESS)
|
|
return -EIO;
|
|
|
|
guc->fw.load_status = INTEL_UC_FIRMWARE_PENDING;
|
|
|
|
DRM_DEBUG_DRIVER("GuC fw status: fetch %s, load %s\n",
|
|
intel_uc_fw_status_repr(guc->fw.fetch_status),
|
|
intel_uc_fw_status_repr(guc->fw.load_status));
|
|
|
|
ret = guc_ucode_xfer(dev_priv);
|
|
|
|
if (ret)
|
|
return -EAGAIN;
|
|
|
|
guc->fw.load_status = INTEL_UC_FIRMWARE_SUCCESS;
|
|
|
|
DRM_INFO("GuC %s (firmware %s [version %u.%u])\n",
|
|
i915.enable_guc_submission ? "submission enabled" : "loaded",
|
|
guc->fw.path,
|
|
guc->fw.major_ver_found, guc->fw.minor_ver_found);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* intel_guc_select_fw() - selects GuC firmware for loading
|
|
* @guc: intel_guc struct
|
|
*
|
|
* Return: zero when we know firmware, non-zero in other case
|
|
*/
|
|
int intel_guc_select_fw(struct intel_guc *guc)
|
|
{
|
|
struct drm_i915_private *dev_priv = guc_to_i915(guc);
|
|
|
|
guc->fw.path = NULL;
|
|
guc->fw.fetch_status = INTEL_UC_FIRMWARE_NONE;
|
|
guc->fw.load_status = INTEL_UC_FIRMWARE_NONE;
|
|
guc->fw.type = INTEL_UC_FW_TYPE_GUC;
|
|
|
|
if (i915.guc_firmware_path) {
|
|
guc->fw.path = i915.guc_firmware_path;
|
|
guc->fw.major_ver_wanted = 0;
|
|
guc->fw.minor_ver_wanted = 0;
|
|
} else if (IS_SKYLAKE(dev_priv)) {
|
|
guc->fw.path = I915_SKL_GUC_UCODE;
|
|
guc->fw.major_ver_wanted = SKL_FW_MAJOR;
|
|
guc->fw.minor_ver_wanted = SKL_FW_MINOR;
|
|
} else if (IS_BROXTON(dev_priv)) {
|
|
guc->fw.path = I915_BXT_GUC_UCODE;
|
|
guc->fw.major_ver_wanted = BXT_FW_MAJOR;
|
|
guc->fw.minor_ver_wanted = BXT_FW_MINOR;
|
|
} else if (IS_KABYLAKE(dev_priv)) {
|
|
guc->fw.path = I915_KBL_GUC_UCODE;
|
|
guc->fw.major_ver_wanted = KBL_FW_MAJOR;
|
|
guc->fw.minor_ver_wanted = KBL_FW_MINOR;
|
|
} else {
|
|
DRM_ERROR("No GuC firmware known for platform with GuC!\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
return 0;
|
|
}
|