// SPDX-License-Identifier: MIT
/*
* Copyright © 2022 Intel Corporation
*/
#include "xe_guc.h"
#include <drm/drm_managed.h>
#include <generated/xe_wa_oob.h>
#include "abi/guc_actions_abi.h"
#include "abi/guc_errors_abi.h"
#include "regs/xe_gt_regs.h"
#include "regs/xe_gtt_defs.h"
#include "regs/xe_guc_regs.h"
#include "regs/xe_irq_regs.h"
#include "xe_bo.h"
#include "xe_device.h"
#include "xe_force_wake.h"
#include "xe_gt.h"
#include "xe_gt_printk.h"
#include "xe_gt_sriov_vf.h"
#include "xe_gt_throttle.h"
#include "xe_guc_ads.h"
#include "xe_guc_buf.h"
#include "xe_guc_capture.h"
#include "xe_guc_ct.h"
#include "xe_guc_db_mgr.h"
#include "xe_guc_engine_activity.h"
#include "xe_guc_hwconfig.h"
#include "xe_guc_klv_helpers.h"
#include "xe_guc_log.h"
#include "xe_guc_pc.h"
#include "xe_guc_relay.h"
#include "xe_guc_submit.h"
#include "xe_memirq.h"
#include "xe_mmio.h"
#include "xe_platform_types.h"
#include "xe_sriov.h"
#include "xe_uc.h"
#include "xe_uc_fw.h"
#include "xe_wa.h"
#include "xe_wopcm.h"
static u32 guc_bo_ggtt_addr(struct xe_guc *guc,
struct xe_bo *bo)
{
struct xe_device *xe = guc_to_xe(guc);
u32 addr;
/*
* For most BOs , the address on the allocating tile is fine . However for
* some , e . g . G2G CTB , the address on a specific tile is required as it
* might be different for each tile . So , just always ask for the address
* on the target GuC .
*/
addr = __xe_bo_ggtt_addr(bo, gt_to_tile(guc_to_gt(guc))->id);
/* GuC addresses above GUC_GGTT_TOP don't map through the GTT */
xe_assert(xe, addr >= xe_wopcm_size(guc_to_xe(guc)));
xe_assert(xe, addr < GUC_GGTT_TOP);
xe_assert(xe, xe_bo_size(bo) <= GUC_GGTT_TOP - addr);
return addr;
}
static u32 guc_ctl_debug_flags(struct xe_guc *guc)
{
u32 level = xe_guc_log_get_level(&guc->log);
u32 flags = 0 ;
if (!GUC_LOG_LEVEL_IS_VERBOSE(level))
flags |= GUC_LOG_DISABLED;
else
flags |= GUC_LOG_LEVEL_TO_VERBOSITY(level) <<
GUC_LOG_VERBOSITY_SHIFT;
return flags;
}
static u32 guc_ctl_feature_flags(struct xe_guc *guc)
{
u32 flags = GUC_CTL_ENABLE_LITE_RESTORE;
if (!guc_to_xe(guc)->info.skip_guc_pc)
flags |= GUC_CTL_ENABLE_SLPC;
return flags;
}
static u32 guc_ctl_log_params_flags(struct xe_guc *guc)
{
u32 offset = guc_bo_ggtt_addr(guc, guc->log.bo) >> PAGE_SHIFT;
u32 flags;
#if (((CRASH_BUFFER_SIZE) % SZ_1M) == 0 )
#define LOG_UNIT SZ_1M
#define LOG_FLAG GUC_LOG_LOG_ALLOC_UNITS
#else
#define LOG_UNIT SZ_4K
#define LOG_FLAG 0
#endif
#if (((CAPTURE_BUFFER_SIZE) % SZ_1M) == 0 )
#define CAPTURE_UNIT SZ_1M
#define CAPTURE_FLAG GUC_LOG_CAPTURE_ALLOC_UNITS
#else
#define CAPTURE_UNIT SZ_4K
#define CAPTURE_FLAG 0
#endif
BUILD_BUG_ON(!CRASH_BUFFER_SIZE);
BUILD_BUG_ON(!IS_ALIGNED(CRASH_BUFFER_SIZE, LOG_UNIT));
BUILD_BUG_ON(!DEBUG_BUFFER_SIZE);
BUILD_BUG_ON(!IS_ALIGNED(DEBUG_BUFFER_SIZE, LOG_UNIT));
BUILD_BUG_ON(!CAPTURE_BUFFER_SIZE);
BUILD_BUG_ON(!IS_ALIGNED(CAPTURE_BUFFER_SIZE, CAPTURE_UNIT));
BUILD_BUG_ON((CRASH_BUFFER_SIZE / LOG_UNIT - 1 ) >
(GUC_LOG_CRASH_MASK >> GUC_LOG_CRASH_SHIFT));
BUILD_BUG_ON((DEBUG_BUFFER_SIZE / LOG_UNIT - 1 ) >
(GUC_LOG_DEBUG_MASK >> GUC_LOG_DEBUG_SHIFT));
BUILD_BUG_ON((CAPTURE_BUFFER_SIZE / CAPTURE_UNIT - 1 ) >
(GUC_LOG_CAPTURE_MASK >> GUC_LOG_CAPTURE_SHIFT));
flags = GUC_LOG_VALID |
GUC_LOG_NOTIFY_ON_HALF_FULL |
CAPTURE_FLAG |
LOG_FLAG |
((CRASH_BUFFER_SIZE / LOG_UNIT - 1 ) << GUC_LOG_CRASH_SHIFT) |
((DEBUG_BUFFER_SIZE / LOG_UNIT - 1 ) << GUC_LOG_DEBUG_SHIFT) |
((CAPTURE_BUFFER_SIZE / CAPTURE_UNIT - 1 ) <<
GUC_LOG_CAPTURE_SHIFT) |
(offset << GUC_LOG_BUF_ADDR_SHIFT);
#undef LOG_UNIT
#undef LOG_FLAG
#undef CAPTURE_UNIT
#undef CAPTURE_FLAG
return flags;
}
static u32 guc_ctl_ads_flags(struct xe_guc *guc)
{
u32 ads = guc_bo_ggtt_addr(guc, guc->ads.bo) >> PAGE_SHIFT;
u32 flags = ads << GUC_ADS_ADDR_SHIFT;
return flags;
}
static bool needs_wa_dual_queue(struct xe_gt *gt)
{
/*
* The DUAL_QUEUE_WA tells the GuC to not allow concurrent submissions
* on RCS and CCSes with different address spaces , which on DG2 is
* required as a WA for an HW bug .
*/
if (XE_WA(gt, 22011391025 ))
return true ;
/*
* On newer platforms , the HW has been updated to not allow parallel
* execution of different address spaces , so the RCS / CCS will stall the
* context switch if one of the other RCS / CCSes is busy with a different
* address space . While functionally correct , having a submission
* stalled on the HW limits the GuC ability to shuffle things around and
* can cause complications if the non - stalled submission runs for a long
* time , because the GuC doesn ' t know that the stalled submission isn ' t
* actually running and might declare it as hung . Therefore , we enable
* the DUAL_QUEUE_WA on all newer platforms on GTs that have CCS engines
* to move management back to the GuC .
*/
if (CCS_MASK(gt) && GRAPHICS_VERx100(gt_to_xe(gt)) >= 1270 )
return true ;
return false ;
}
static u32 guc_ctl_wa_flags(struct xe_guc *guc)
{
struct xe_device *xe = guc_to_xe(guc);
struct xe_gt *gt = guc_to_gt(guc);
u32 flags = 0 ;
if (XE_WA(gt, 22012773006 ))
flags |= GUC_WA_POLLCS;
if (XE_WA(gt, 14014475959 ))
flags |= GUC_WA_HOLD_CCS_SWITCHOUT;
if (needs_wa_dual_queue(gt))
flags |= GUC_WA_DUAL_QUEUE;
/*
* Wa_22011802037 : FIXME - there ' s more to be done than simply setting
* this flag : make sure each CS is stopped when preparing for GT reset
* and wait for pending MI_FW .
*/
if (GRAPHICS_VERx100(xe) < 1270 )
flags |= GUC_WA_PRE_PARSER;
if (XE_WA(gt, 22012727170 ) || XE_WA(gt, 22012727685 ))
flags |= GUC_WA_CONTEXT_ISOLATION;
if (XE_WA(gt, 18020744125 ) &&
!xe_hw_engine_mask_per_class(gt, XE_ENGINE_CLASS_RENDER))
flags |= GUC_WA_RCS_REGS_IN_CCS_REGS_LIST;
if (XE_WA(gt, 1509372804 ))
flags |= GUC_WA_RENDER_RST_RC6_EXIT;
if (XE_WA(gt, 14018913170 ))
flags |= GUC_WA_ENABLE_TSC_CHECK_ON_RC6;
return flags;
}
static u32 guc_ctl_devid(struct xe_guc *guc)
{
struct xe_device *xe = guc_to_xe(guc);
return (((u32)xe->info.devid) << 16 ) | xe->info.revid;
}
static void guc_print_params(struct xe_guc *guc)
{
struct xe_gt *gt = guc_to_gt(guc);
u32 *params = guc->params;
int i;
BUILD_BUG_ON(sizeof (guc->params) != GUC_CTL_MAX_DWORDS * sizeof (u32));
BUILD_BUG_ON(GUC_CTL_MAX_DWORDS + 2 != SOFT_SCRATCH_COUNT);
for (i = 0 ; i < GUC_CTL_MAX_DWORDS; i++)
xe_gt_dbg(gt, "GuC param[%2d] = 0x%08x\n" , i, params[i]);
}
static void guc_init_params(struct xe_guc *guc)
{
u32 *params = guc->params;
params[GUC_CTL_LOG_PARAMS] = guc_ctl_log_params_flags(guc);
params[GUC_CTL_FEATURE] = 0 ;
params[GUC_CTL_DEBUG] = guc_ctl_debug_flags(guc);
params[GUC_CTL_ADS] = guc_ctl_ads_flags(guc);
params[GUC_CTL_WA] = 0 ;
params[GUC_CTL_DEVID] = guc_ctl_devid(guc);
guc_print_params(guc);
}
static void guc_init_params_post_hwconfig(struct xe_guc *guc)
{
u32 *params = guc->params;
params[GUC_CTL_LOG_PARAMS] = guc_ctl_log_params_flags(guc);
params[GUC_CTL_FEATURE] = guc_ctl_feature_flags(guc);
params[GUC_CTL_DEBUG] = guc_ctl_debug_flags(guc);
params[GUC_CTL_ADS] = guc_ctl_ads_flags(guc);
params[GUC_CTL_WA] = guc_ctl_wa_flags(guc);
params[GUC_CTL_DEVID] = guc_ctl_devid(guc);
guc_print_params(guc);
}
/*
* Initialize 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_write_params(struct xe_guc *guc)
{
struct xe_gt *gt = guc_to_gt(guc);
int i;
xe_force_wake_assert_held(gt_to_fw(gt), XE_FW_GT);
xe_mmio_write32(>->mmio, SOFT_SCRATCH(0 ), 0 );
for (i = 0 ; i < GUC_CTL_MAX_DWORDS; i++)
xe_mmio_write32(>->mmio, SOFT_SCRATCH(1 + i), guc->params[i]);
}
static int guc_action_register_g2g_buffer(struct xe_guc *guc, u32 type, u32 dst_tile, u32 dst_dev,
u32 desc_addr, u32 buff_addr, u32 size)
{
struct xe_gt *gt = guc_to_gt(guc);
struct xe_device *xe = gt_to_xe(gt);
u32 action[] = {
XE_GUC_ACTION_REGISTER_G2G,
FIELD_PREP(XE_G2G_REGISTER_SIZE, size / SZ_4K - 1 ) |
FIELD_PREP(XE_G2G_REGISTER_TYPE, type) |
FIELD_PREP(XE_G2G_REGISTER_TILE, dst_tile) |
FIELD_PREP(XE_G2G_REGISTER_DEVICE, dst_dev),
desc_addr,
buff_addr,
};
xe_assert(xe, (type == XE_G2G_TYPE_IN) || (type == XE_G2G_TYPE_OUT));
xe_assert(xe, !(size % SZ_4K));
return xe_guc_ct_send_block(&guc->ct, action, ARRAY_SIZE(action));
}
static int guc_action_deregister_g2g_buffer(struct xe_guc *guc, u32 type, u32 dst_tile, u32 dst_dev)
{
struct xe_gt *gt = guc_to_gt(guc);
struct xe_device *xe = gt_to_xe(gt);
u32 action[] = {
XE_GUC_ACTION_DEREGISTER_G2G,
FIELD_PREP(XE_G2G_DEREGISTER_TYPE, type) |
FIELD_PREP(XE_G2G_DEREGISTER_TILE, dst_tile) |
FIELD_PREP(XE_G2G_DEREGISTER_DEVICE, dst_dev),
};
xe_assert(xe, (type == XE_G2G_TYPE_IN) || (type == XE_G2G_TYPE_OUT));
return xe_guc_ct_send_block(&guc->ct, action, ARRAY_SIZE(action));
}
#define G2G_DEV(gt) (((gt)->info.type == XE_GT_TYPE_MAIN) ? 0 : 1 )
#define G2G_BUFFER_SIZE (SZ_4K)
#define G2G_DESC_SIZE (64 )
#define G2G_DESC_AREA_SIZE (SZ_4K)
/*
* Generate a unique id for each bi - directional CTB for each pair of
* near and far tiles / devices . The id can then be used as an index into
* a single allocation that is sub - divided into multiple CTBs .
*
* For example , with two devices per tile and two tiles , the table should
* look like :
* Far < tile > . < dev >
* 0 . 0 0 . 1 1 . 0 1 . 1
* N 0 . 0 - - / - - 00 / 01 02 / 03 04 / 05
* e 0 . 1 01 / 00 - - / - - 06 / 07 08 / 09
* a 1 . 0 03 / 02 07 / 06 - - / - - 10 / 11
* r 1 . 1 05 / 04 09 / 08 11 / 10 - - / - -
*
* Where each entry is Rx / Tx channel id .
*
* So GuC # 3 ( tile 1 , dev 1 ) talking to GuC # 2 ( tile 1 , dev 0 ) would
* be reading from channel # 11 and writing to channel # 10 . Whereas ,
* GuC # 2 talking to GuC # 3 would be read on # 10 and write to # 11 .
*/
static unsigned int g2g_slot(u32 near_tile, u32 near_dev, u32 far_tile, u32 far_dev,
u32 type, u32 max_inst, bool have_dev)
{
u32 near = near_tile, far = far_tile;
u32 idx = 0 , x, y, direction;
int i;
if (have_dev) {
near = (near << 1 ) | near_dev;
far = (far << 1 ) | far_dev;
}
/* No need to send to one's self */
if (far == near)
return -1 ;
if (far > near) {
/* Top right table half */
x = far;
y = near;
/* T/R is 'forwards' direction */
direction = type;
} else {
/* Bottom left table half */
x = near;
y = far;
/* B/L is 'backwards' direction */
direction = (1 - type);
}
/* Count the rows prior to the target */
for (i = y; i > 0 ; i--)
idx += max_inst - i;
/* Count this row up to the target */
idx += (x - 1 - y);
/* Slots are in Rx/Tx pairs */
idx *= 2 ;
/* Pick Rx/Tx direction */
idx += direction;
return idx;
}
static int guc_g2g_register(struct xe_guc *near_guc, struct xe_gt *far_gt, u32 type, bool have_dev)
{
struct xe_gt *near_gt = guc_to_gt(near_guc);
struct xe_device *xe = gt_to_xe(near_gt);
struct xe_bo *g2g_bo;
u32 near_tile = gt_to_tile(near_gt)->id;
u32 near_dev = G2G_DEV(near_gt);
u32 far_tile = gt_to_tile(far_gt)->id;
u32 far_dev = G2G_DEV(far_gt);
u32 max = xe->info.gt_count;
u32 base, desc, buf;
int slot;
/* G2G is not allowed between different cards */
xe_assert(xe, xe == gt_to_xe(far_gt));
g2g_bo = near_guc->g2g.bo;
xe_assert(xe, g2g_bo);
slot = g2g_slot(near_tile, near_dev, far_tile, far_dev, type, max, have_dev);
xe_assert(xe, slot >= 0 );
base = guc_bo_ggtt_addr(near_guc, g2g_bo);
desc = base + slot * G2G_DESC_SIZE;
buf = base + G2G_DESC_AREA_SIZE + slot * G2G_BUFFER_SIZE;
xe_assert(xe, (desc - base + G2G_DESC_SIZE) <= G2G_DESC_AREA_SIZE);
xe_assert(xe, (buf - base + G2G_BUFFER_SIZE) <= xe_bo_size(g2g_bo));
return guc_action_register_g2g_buffer(near_guc, type, far_tile, far_dev,
desc, buf, G2G_BUFFER_SIZE);
}
static void guc_g2g_deregister(struct xe_guc *guc, u32 far_tile, u32 far_dev, u32 type)
{
guc_action_deregister_g2g_buffer(guc, type, far_tile, far_dev);
}
static u32 guc_g2g_size(struct xe_guc *guc)
{
struct xe_gt *gt = guc_to_gt(guc);
struct xe_device *xe = gt_to_xe(gt);
unsigned int count = xe->info.gt_count;
u32 num_channels = (count * (count - 1 )) / 2 ;
xe_assert(xe, num_channels * XE_G2G_TYPE_LIMIT * G2G_DESC_SIZE <= G2G_DESC_AREA_SIZE);
return num_channels * XE_G2G_TYPE_LIMIT * G2G_BUFFER_SIZE + G2G_DESC_AREA_SIZE;
}
static bool xe_guc_g2g_wanted(struct xe_device *xe)
{
/* Can't do GuC to GuC communication if there is only one GuC */
if (xe->info.gt_count <= 1 )
return false ;
/* No current user */
return false ;
}
static int guc_g2g_alloc(struct xe_guc *guc)
{
struct xe_gt *gt = guc_to_gt(guc);
struct xe_device *xe = gt_to_xe(gt);
struct xe_tile *tile = gt_to_tile(gt);
struct xe_bo *bo;
u32 g2g_size;
if (guc->g2g.bo)
return 0 ;
if (gt->info.id != 0 ) {
struct xe_gt *root_gt = xe_device_get_gt(xe, 0 );
struct xe_guc *root_guc = &root_gt->uc.guc;
struct xe_bo *bo;
bo = xe_bo_get(root_guc->g2g.bo);
if (!bo)
return -ENODEV;
guc->g2g.bo = bo;
guc->g2g.owned = false ;
return 0 ;
}
g2g_size = guc_g2g_size(guc);
bo = xe_managed_bo_create_pin_map(xe, tile, g2g_size,
XE_BO_FLAG_VRAM_IF_DGFX(tile) |
XE_BO_FLAG_GGTT |
XE_BO_FLAG_GGTT_ALL |
XE_BO_FLAG_GGTT_INVALIDATE |
XE_BO_FLAG_PINNED_NORESTORE);
if (IS_ERR(bo))
return PTR_ERR(bo);
xe_map_memset(xe, &bo->vmap, 0 , 0 , g2g_size);
guc->g2g.bo = bo;
guc->g2g.owned = true ;
return 0 ;
}
static void guc_g2g_fini(struct xe_guc *guc)
{
if (!guc->g2g.bo)
return ;
/* Unpinning the owned object is handled by generic shutdown */
if (!guc->g2g.owned)
xe_bo_put(guc->g2g.bo);
guc->g2g.bo = NULL;
}
static int guc_g2g_start(struct xe_guc *guc)
{
struct xe_gt *far_gt, *gt = guc_to_gt(guc);
struct xe_device *xe = gt_to_xe(gt);
unsigned int i, j;
int t, err;
bool have_dev;
if (!guc->g2g.bo) {
int ret;
ret = guc_g2g_alloc(guc);
if (ret)
return ret;
}
/* GuC interface will need extending if more GT device types are ever created. */
xe_gt_assert(gt, (gt->info.type == XE_GT_TYPE_MAIN) || (gt->info.type == XE_GT_TYPE_MEDIA));
/* Channel numbering depends on whether there are multiple GTs per tile */
have_dev = xe->info.gt_count > xe->info.tile_count;
for_each_gt(far_gt, xe, i) {
u32 far_tile, far_dev;
if (far_gt->info.id == gt->info.id)
continue ;
far_tile = gt_to_tile(far_gt)->id;
far_dev = G2G_DEV(far_gt);
for (t = 0 ; t < XE_G2G_TYPE_LIMIT; t++) {
err = guc_g2g_register(guc, far_gt, t, have_dev);
if (err) {
while (--t >= 0 )
guc_g2g_deregister(guc, far_tile, far_dev, t);
goto err_deregister;
}
}
}
return 0 ;
err_deregister:
for_each_gt(far_gt, xe, j) {
u32 tile, dev;
if (far_gt->info.id == gt->info.id)
continue ;
if (j >= i)
break ;
tile = gt_to_tile(far_gt)->id;
dev = G2G_DEV(far_gt);
for (t = 0 ; t < XE_G2G_TYPE_LIMIT; t++)
guc_g2g_deregister(guc, tile, dev, t);
}
return err;
}
static int __guc_opt_in_features_enable(struct xe_guc *guc, u64 addr, u32 num_dwords)
{
u32 action[] = {
XE_GUC_ACTION_OPT_IN_FEATURE_KLV,
lower_32_bits(addr),
upper_32_bits(addr),
num_dwords
};
return xe_guc_ct_send_block(&guc->ct, action, ARRAY_SIZE(action));
}
static bool supports_dynamic_ics(struct xe_guc *guc)
{
struct xe_device *xe = guc_to_xe(guc);
struct xe_gt *gt = guc_to_gt(guc);
/* Dynamic ICS is available for PVC and Xe2 and newer platforms. */
if (xe->info.platform != XE_PVC && GRAPHICS_VER(xe) < 20 )
return false ;
/*
* The feature is currently not compatible with multi - lrc , so the GuC
* does not support it at all on the media engines ( which are the main
* users of mlrc ) . On the primary GT side , to avoid it being used in
* conjunction with mlrc , we only enable it if we are in single CCS
* mode .
*/
if (xe_gt_is_media_type(gt) || gt->ccs_mode > 1 )
return false ;
/*
* Dynamic ICS requires GuC v70 . 40 . 1 , which maps to compatibility
* version v1 . 18 . 4 .
*/
return GUC_SUBMIT_VER(guc) >= MAKE_GUC_VER(1 , 18 , 4 );
}
#define OPT_IN_MAX_DWORDS 16
int xe_guc_opt_in_features_enable(struct xe_guc *guc)
{
struct xe_device *xe = guc_to_xe(guc);
CLASS (xe_guc_buf, buf)(&guc->buf, OPT_IN_MAX_DWORDS);
u32 count = 0 ;
u32 *klvs;
int ret;
if (!xe_guc_buf_is_valid(buf))
return -ENOBUFS;
klvs = xe_guc_buf_cpu_ptr(buf);
/*
* The extra CAT error type opt - in was added in GuC v70 . 17 . 0 , which maps
* to compatibility version v1 . 7 . 0 .
* Note that the GuC allows enabling this KLV even on platforms that do
* not support the extra type ; in such case the returned type variable
* will be set to a known invalid value which we can check against .
*/
if (GUC_SUBMIT_VER(guc) >= MAKE_GUC_VER(1 , 7 , 0 ))
klvs[count++] = PREP_GUC_KLV_TAG(OPT_IN_FEATURE_EXT_CAT_ERR_TYPE);
if (supports_dynamic_ics(guc))
klvs[count++] = PREP_GUC_KLV_TAG(OPT_IN_FEATURE_DYNAMIC_INHIBIT_CONTEXT_SWITCH);
if (count) {
xe_assert(xe, count <= OPT_IN_MAX_DWORDS);
ret = __guc_opt_in_features_enable(guc, xe_guc_buf_flush(buf), count);
if (ret < 0 ) {
xe_gt_err(guc_to_gt(guc),
"failed to enable GuC opt-in features: %pe\n" ,
ERR_PTR(ret));
return ret;
}
}
return 0 ;
}
static void guc_fini_hw(void *arg)
{
struct xe_guc *guc = arg;
struct xe_gt *gt = guc_to_gt(guc);
unsigned int fw_ref;
fw_ref = xe_force_wake_get(gt_to_fw(gt), XE_FORCEWAKE_ALL);
xe_uc_sanitize_reset(&guc_to_gt(guc)->uc);
xe_force_wake_put(gt_to_fw(gt), fw_ref);
guc_g2g_fini(guc);
}
/**
* xe_guc_comm_init_early - early initialization of GuC communication
* @ guc : the & xe_guc to initialize
*
* Must be called prior to first MMIO communication with GuC firmware .
*/
void xe_guc_comm_init_early(struct xe_guc *guc)
{
struct xe_gt *gt = guc_to_gt(guc);
if (xe_gt_is_media_type(gt))
guc->notify_reg = MED_GUC_HOST_INTERRUPT;
else
guc->notify_reg = GUC_HOST_INTERRUPT;
}
static int xe_guc_realloc_post_hwconfig(struct xe_guc *guc)
{
struct xe_tile *tile = gt_to_tile(guc_to_gt(guc));
struct xe_device *xe = guc_to_xe(guc);
int ret;
if (!IS_DGFX(guc_to_xe(guc)))
return 0 ;
ret = xe_managed_bo_reinit_in_vram(xe, tile, &guc->fw.bo);
if (ret)
return ret;
ret = xe_managed_bo_reinit_in_vram(xe, tile, &guc->log.bo);
if (ret)
return ret;
ret = xe_managed_bo_reinit_in_vram(xe, tile, &guc->ads.bo);
if (ret)
return ret;
return 0 ;
}
static int vf_guc_init_noalloc(struct xe_guc *guc)
{
struct xe_gt *gt = guc_to_gt(guc);
int err;
err = xe_gt_sriov_vf_bootstrap(gt);
if (err)
return err;
err = xe_gt_sriov_vf_query_config(gt);
if (err)
return err;
return 0 ;
}
int xe_guc_init_noalloc(struct xe_guc *guc)
{
struct xe_device *xe = guc_to_xe(guc);
struct xe_gt *gt = guc_to_gt(guc);
int ret;
xe_guc_comm_init_early(guc);
ret = xe_guc_ct_init_noalloc(&guc->ct);
if (ret)
goto out;
ret = xe_guc_relay_init(&guc->relay);
if (ret)
goto out;
if (IS_SRIOV_VF(xe)) {
ret = vf_guc_init_noalloc(guc);
if (ret)
goto out;
}
return 0 ;
out:
xe_gt_err(gt, "GuC init failed with %pe\n" , ERR_PTR(ret));
return ret;
}
int xe_guc_init(struct xe_guc *guc)
{
struct xe_device *xe = guc_to_xe(guc);
struct xe_gt *gt = guc_to_gt(guc);
int ret;
guc->fw.type = XE_UC_FW_TYPE_GUC;
ret = xe_uc_fw_init(&guc->fw);
if (ret)
return ret;
if (!xe_uc_fw_is_enabled(&guc->fw))
return 0 ;
if (IS_SRIOV_VF(xe)) {
ret = xe_guc_ct_init(&guc->ct);
if (ret)
goto out;
return 0 ;
}
ret = xe_guc_log_init(&guc->log);
if (ret)
goto out;
ret = xe_guc_capture_init(guc);
if (ret)
goto out;
ret = xe_guc_ads_init(&guc->ads);
if (ret)
goto out;
ret = xe_guc_ct_init(&guc->ct);
if (ret)
goto out;
xe_uc_fw_change_status(&guc->fw, XE_UC_FIRMWARE_LOADABLE);
ret = devm_add_action_or_reset(xe->drm.dev, guc_fini_hw, guc);
if (ret)
goto out;
guc_init_params(guc);
return 0 ;
out:
xe_gt_err(gt, "GuC init failed with %pe\n" , ERR_PTR(ret));
return ret;
}
static int vf_guc_init_post_hwconfig(struct xe_guc *guc)
{
int err;
err = xe_guc_submit_init(guc, xe_gt_sriov_vf_guc_ids(guc_to_gt(guc)));
if (err)
return err;
err = xe_guc_buf_cache_init(&guc->buf);
if (err)
return err;
/* XXX xe_guc_db_mgr_init not needed for now */
return 0 ;
}
/**
* xe_guc_init_post_hwconfig - initialize GuC post hwconfig load
* @ guc : The GuC object
*
* Return : 0 on success , negative error code on error .
*/
int xe_guc_init_post_hwconfig(struct xe_guc *guc)
{
int ret;
if (IS_SRIOV_VF(guc_to_xe(guc)))
return vf_guc_init_post_hwconfig(guc);
ret = xe_guc_realloc_post_hwconfig(guc);
if (ret)
return ret;
ret = xe_guc_ct_init_post_hwconfig(&guc->ct);
if (ret)
return ret;
guc_init_params_post_hwconfig(guc);
ret = xe_guc_submit_init(guc, ~0 );
if (ret)
return ret;
ret = xe_guc_db_mgr_init(&guc->dbm, ~0 );
if (ret)
return ret;
ret = xe_guc_pc_init(&guc->pc);
if (ret)
return ret;
ret = xe_guc_engine_activity_init(guc);
if (ret)
return ret;
ret = xe_guc_buf_cache_init(&guc->buf);
if (ret)
return ret;
return xe_guc_ads_init_post_hwconfig(&guc->ads);
}
int xe_guc_post_load_init(struct xe_guc *guc)
{
int ret;
xe_guc_ads_populate_post_load(&guc->ads);
ret = xe_guc_opt_in_features_enable(guc);
if (ret)
return ret;
if (xe_guc_g2g_wanted(guc_to_xe(guc))) {
ret = guc_g2g_start(guc);
if (ret)
return ret;
}
return xe_guc_submit_enable(guc);
}
int xe_guc_reset(struct xe_guc *guc)
{
struct xe_gt *gt = guc_to_gt(guc);
struct xe_mmio *mmio = >->mmio;
u32 guc_status, gdrst;
int ret;
xe_force_wake_assert_held(gt_to_fw(gt), XE_FW_GT);
if (IS_SRIOV_VF(gt_to_xe(gt)))
return xe_gt_sriov_vf_bootstrap(gt);
xe_mmio_write32(mmio, GDRST, GRDOM_GUC);
ret = xe_mmio_wait32(mmio, GDRST, GRDOM_GUC, 0 , 5000 , &gdrst, false );
if (ret) {
xe_gt_err(gt, "GuC reset timed out, GDRST=%#x\n" , gdrst);
goto err_out;
}
guc_status = xe_mmio_read32(mmio, GUC_STATUS);
if (!(guc_status & GS_MIA_IN_RESET)) {
xe_gt_err(gt, "GuC status: %#x, MIA core expected to be in reset\n" ,
guc_status);
ret = -EIO;
goto err_out;
}
return 0 ;
err_out:
return ret;
}
static void guc_prepare_xfer(struct xe_guc *guc)
{
struct xe_gt *gt = guc_to_gt(guc);
struct xe_mmio *mmio = >->mmio;
struct xe_device *xe = guc_to_xe(guc);
u32 shim_flags = GUC_ENABLE_READ_CACHE_LOGIC |
GUC_ENABLE_READ_CACHE_FOR_SRAM_DATA |
GUC_ENABLE_READ_CACHE_FOR_WOPCM_DATA |
GUC_ENABLE_MIA_CLOCK_GATING;
if (GRAPHICS_VERx100(xe) < 1250 )
shim_flags |= GUC_DISABLE_SRAM_INIT_TO_ZEROES |
GUC_ENABLE_MIA_CACHING;
if (GRAPHICS_VER(xe) >= 20 || xe->info.platform == XE_PVC)
shim_flags |= REG_FIELD_PREP(GUC_MOCS_INDEX_MASK, gt->mocs.uc_index);
/* Must program this register before loading the ucode with DMA */
xe_mmio_write32(mmio, GUC_SHIM_CONTROL, shim_flags);
xe_mmio_write32(mmio, GT_PM_CONFIG, GT_DOORBELL_ENABLE);
/* Make sure GuC receives ARAT interrupts */
xe_mmio_rmw32(mmio, PMINTRMSK, ARAT_EXPIRED_INTRMSK, 0 );
}
/*
* Supporting MMIO & in memory RSA
*/
static int guc_xfer_rsa(struct xe_guc *guc)
{
struct xe_gt *gt = guc_to_gt(guc);
u32 rsa[UOS_RSA_SCRATCH_COUNT];
size_t copied;
int i;
if (guc->fw.rsa_size > 256 ) {
u32 rsa_ggtt_addr = xe_bo_ggtt_addr(guc->fw.bo) +
xe_uc_fw_rsa_offset(&guc->fw);
xe_mmio_write32(>->mmio, UOS_RSA_SCRATCH(0 ), rsa_ggtt_addr);
return 0 ;
}
copied = xe_uc_fw_copy_rsa(&guc->fw, rsa, sizeof (rsa));
if (copied < sizeof (rsa))
return -ENOMEM;
for (i = 0 ; i < UOS_RSA_SCRATCH_COUNT; i++)
xe_mmio_write32(>->mmio, UOS_RSA_SCRATCH(i), rsa[i]);
return 0 ;
}
/*
* Check a previously read GuC status register ( GUC_STATUS ) looking for
* known terminal states ( either completion or failure ) of either the
* microkernel status field or the boot ROM status field . Returns + 1 for
* successful completion , - 1 for failure and 0 for any intermediate state .
*/
static int guc_load_done(u32 status)
{
u32 uk_val = REG_FIELD_GET(GS_UKERNEL_MASK, status);
u32 br_val = REG_FIELD_GET(GS_BOOTROM_MASK, status);
switch (uk_val) {
case XE_GUC_LOAD_STATUS_READY:
return 1 ;
case XE_GUC_LOAD_STATUS_ERROR_DEVID_BUILD_MISMATCH:
case XE_GUC_LOAD_STATUS_GUC_PREPROD_BUILD_MISMATCH:
case XE_GUC_LOAD_STATUS_ERROR_DEVID_INVALID_GUCTYPE:
case XE_GUC_LOAD_STATUS_HWCONFIG_ERROR:
case XE_GUC_LOAD_STATUS_BOOTROM_VERSION_MISMATCH:
case XE_GUC_LOAD_STATUS_DPC_ERROR:
case XE_GUC_LOAD_STATUS_EXCEPTION:
case XE_GUC_LOAD_STATUS_INIT_DATA_INVALID:
case XE_GUC_LOAD_STATUS_MPU_DATA_INVALID:
case XE_GUC_LOAD_STATUS_INIT_MMIO_SAVE_RESTORE_INVALID:
case XE_GUC_LOAD_STATUS_KLV_WORKAROUND_INIT_ERROR:
case XE_GUC_LOAD_STATUS_INVALID_FTR_FLAG:
return -1 ;
}
switch (br_val) {
case XE_BOOTROM_STATUS_NO_KEY_FOUND:
case XE_BOOTROM_STATUS_RSA_FAILED:
case XE_BOOTROM_STATUS_PAVPC_FAILED:
case XE_BOOTROM_STATUS_WOPCM_FAILED:
case XE_BOOTROM_STATUS_LOADLOC_FAILED:
case XE_BOOTROM_STATUS_JUMP_FAILED:
case XE_BOOTROM_STATUS_RC6CTXCONFIG_FAILED:
case XE_BOOTROM_STATUS_MPUMAP_INCORRECT:
case XE_BOOTROM_STATUS_EXCEPTION:
case XE_BOOTROM_STATUS_PROD_KEY_CHECK_FAILURE:
return -1 ;
}
return 0 ;
}
static s32 guc_pc_get_cur_freq(struct xe_guc_pc *guc_pc)
{
u32 freq;
int ret = xe_guc_pc_get_cur_freq(guc_pc, &freq);
return ret ? ret : freq;
}
/*
* Wait for the GuC to start up .
*
* Measurements indicate this should take no more than 20 ms ( assuming the GT
* clock is at maximum frequency ) . However , thermal throttling and other issues
* can prevent the clock hitting max and thus making the load take significantly
* longer . Allow up to 200 ms as a safety margin for real world worst case situations .
*
* However , bugs anywhere from KMD to GuC to PCODE to fan failure in a CI farm can
* lead to even longer times . E . g . if the GT is clamped to minimum frequency then
* the load times can be in the seconds range . So the timeout is increased for debug
* builds to ensure that problems can be correctly analysed . For release builds , the
* timeout is kept short so that users don ' t wait forever to find out that there is a
* problem . In either case , if the load took longer than is reasonable even with some
* ' sensible ' throttling , then flag a warning because something is not right .
*
* Note that there is a limit on how long an individual usleep_range ( ) can wait for ,
* hence longer waits require wrapping a shorter wait in a loop .
*
* Note that the only reason an end user should hit the shorter timeout is in case of
* extreme thermal throttling . And a system that is that hot during boot is probably
* dead anyway !
*/
#if IS_ENABLED(CONFIG_DRM_XE_DEBUG)
#define GUC_LOAD_RETRY_LIMIT 20
#else
#define GUC_LOAD_RETRY_LIMIT 3
#endif
#define GUC_LOAD_TIME_WARN_MS 200
static int guc_wait_ucode(struct xe_guc *guc)
{
struct xe_gt *gt = guc_to_gt(guc);
struct xe_mmio *mmio = >->mmio;
struct xe_guc_pc *guc_pc = >->uc.guc.pc;
ktime_t before, after, delta;
int load_done;
u32 status = 0 ;
int count = 0 ;
u64 delta_ms;
u32 before_freq;
before_freq = xe_guc_pc_get_act_freq(guc_pc);
before = ktime_get();
/*
* Note , can ' t use any kind of timing information from the call to xe_mmio_wait .
* It could return a thousand intermediate stages at random times . Instead , must
* manually track the total time taken and locally implement the timeout .
*/
do {
u32 last_status = status & (GS_UKERNEL_MASK | GS_BOOTROM_MASK);
int ret;
/*
* Wait for any change ( intermediate or terminal ) in the status register .
* Note , the return value is a don ' t care . The only failure code is timeout
* but the timeouts need to be accumulated over all the intermediate partial
* timeouts rather than allowing a huge timeout each time . So basically , need
* to treat a timeout no different to a value change .
*/
ret = xe_mmio_wait32_not(mmio, GUC_STATUS, GS_UKERNEL_MASK | GS_BOOTROM_MASK,
last_status, 1000 * 1000 , &status, false );
if (ret < 0 )
count++;
after = ktime_get();
delta = ktime_sub(after, before);
delta_ms = ktime_to_ms(delta);
load_done = guc_load_done(status);
if (load_done != 0 )
break ;
if (delta_ms >= (GUC_LOAD_RETRY_LIMIT * 1000 ))
break ;
xe_gt_dbg(gt, "load still in progress, timeouts = %d, freq = %dMHz (req %dMHz), status = 0x%08X [0x%02X/%02X]\n" ,
count, xe_guc_pc_get_act_freq(guc_pc),
guc_pc_get_cur_freq(guc_pc), status,
REG_FIELD_GET(GS_BOOTROM_MASK, status),
REG_FIELD_GET(GS_UKERNEL_MASK, status));
} while (1 );
if (load_done != 1 ) {
u32 ukernel = REG_FIELD_GET(GS_UKERNEL_MASK, status);
u32 bootrom = REG_FIELD_GET(GS_BOOTROM_MASK, status);
xe_gt_err(gt, "load failed: status = 0x%08X, time = %lldms, freq = %dMHz (req %dMHz), done = %d\n" ,
status, delta_ms, xe_guc_pc_get_act_freq(guc_pc),
guc_pc_get_cur_freq(guc_pc), load_done);
xe_gt_err(gt, "load failed: status: Reset = %d, BootROM = 0x%02X, UKernel = 0x%02X, MIA = 0x%02X, Auth = 0x%02X\n" ,
REG_FIELD_GET(GS_MIA_IN_RESET, status),
bootrom, ukernel,
REG_FIELD_GET(GS_MIA_MASK, status),
REG_FIELD_GET(GS_AUTH_STATUS_MASK, status));
switch (bootrom) {
case XE_BOOTROM_STATUS_NO_KEY_FOUND:
xe_gt_err(gt, "invalid key requested, header = 0x%08X\n" ,
xe_mmio_read32(mmio, GUC_HEADER_INFO));
break ;
case XE_BOOTROM_STATUS_RSA_FAILED:
xe_gt_err(gt, "firmware signature verification failed\n" );
break ;
case XE_BOOTROM_STATUS_PROD_KEY_CHECK_FAILURE:
xe_gt_err(gt, "firmware production part check failure\n" );
break ;
}
switch (ukernel) {
case XE_GUC_LOAD_STATUS_HWCONFIG_START:
xe_gt_err(gt, "still extracting hwconfig table.\n" );
break ;
case XE_GUC_LOAD_STATUS_EXCEPTION:
xe_gt_err(gt, "firmware exception. EIP: %#x\n" ,
xe_mmio_read32(mmio, SOFT_SCRATCH(13 )));
break ;
case XE_GUC_LOAD_STATUS_INIT_DATA_INVALID:
xe_gt_err(gt, "illegal init/ADS data\n" );
break ;
case XE_GUC_LOAD_STATUS_INIT_MMIO_SAVE_RESTORE_INVALID:
xe_gt_err(gt, "illegal register in save/restore workaround list\n" );
break ;
case XE_GUC_LOAD_STATUS_KLV_WORKAROUND_INIT_ERROR:
xe_gt_err(gt, "illegal workaround KLV data\n" );
break ;
case XE_GUC_LOAD_STATUS_INVALID_FTR_FLAG:
xe_gt_err(gt, "illegal feature flag specified\n" );
break ;
}
return -EPROTO;
} else if (delta_ms > GUC_LOAD_TIME_WARN_MS) {
xe_gt_warn(gt, "excessive init time: %lldms! [status = 0x%08X, timeouts = %d]\n" ,
delta_ms, status, count);
xe_gt_warn(gt, "excessive init time: [freq = %dMHz (req = %dMHz), before = %dMHz, perf_limit_reasons = 0x%08X]\n" ,
xe_guc_pc_get_act_freq(guc_pc), guc_pc_get_cur_freq(guc_pc),
before_freq, xe_gt_throttle_get_limit_reasons(gt));
} else {
xe_gt_dbg(gt, "init took %lldms, freq = %dMHz (req = %dMHz), before = %dMHz, status = 0x%08X, timeouts = %d\n" ,
delta_ms, xe_guc_pc_get_act_freq(guc_pc), guc_pc_get_cur_freq(guc_pc),
before_freq, status, count);
}
return 0 ;
}
ALLOW_ERROR_INJECTION(guc_wait_ucode, ERRNO);
static int __xe_guc_upload(struct xe_guc *guc)
{
int ret;
/* Raise GT freq to speed up HuC/GuC load */
xe_guc_pc_raise_unslice(&guc->pc);
guc_write_params(guc);
guc_prepare_xfer(guc);
/*
* 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 separately , either by copying it to the UOS_RSA_SCRATCH
* register ( if key size < = 256 ) or through a ggtt - pinned vma ( if key
* size > 256 ) . The RSA size and therefore the way we provide it to the
* HW is fixed for each platform and hard - coded in the bootrom .
*/
ret = guc_xfer_rsa(guc);
if (ret)
goto out;
/*
* Current uCode expects the code to be loaded at 8 k ; locations below
* this are used for the stack .
*/
ret = xe_uc_fw_upload(&guc->fw, 0 x2000, UOS_MOVE);
if (ret)
goto out;
/* Wait for authentication */
ret = guc_wait_ucode(guc);
if (ret)
goto out;
xe_uc_fw_change_status(&guc->fw, XE_UC_FIRMWARE_RUNNING);
return 0 ;
out:
xe_uc_fw_change_status(&guc->fw, XE_UC_FIRMWARE_LOAD_FAIL);
return ret;
}
static int vf_guc_min_load_for_hwconfig(struct xe_guc *guc)
{
struct xe_gt *gt = guc_to_gt(guc);
int ret;
ret = xe_guc_hwconfig_init(guc);
if (ret)
return ret;
ret = xe_guc_enable_communication(guc);
if (ret)
return ret;
ret = xe_gt_sriov_vf_connect(gt);
if (ret)
goto err_out;
ret = xe_gt_sriov_vf_query_runtime(gt);
if (ret)
goto err_out;
return 0 ;
err_out:
xe_guc_sanitize(guc);
return ret;
}
/**
* xe_guc_min_load_for_hwconfig - load minimal GuC and read hwconfig table
* @ guc : The GuC object
*
* This function uploads a minimal GuC that does not support submissions but
* in a state where the hwconfig table can be read . Next , it reads and parses
* the hwconfig table so it can be used for subsequent steps in the driver load .
* Lastly , it enables CT communication ( XXX : this is needed for PFs / VFs only ) .
*
* Return : 0 on success , negative error code on error .
*/
int xe_guc_min_load_for_hwconfig(struct xe_guc *guc)
{
int ret;
if (IS_SRIOV_VF(guc_to_xe(guc)))
return vf_guc_min_load_for_hwconfig(guc);
xe_guc_ads_populate_minimal(&guc->ads);
xe_guc_pc_init_early(&guc->pc);
ret = __xe_guc_upload(guc);
if (ret)
return ret;
ret = xe_guc_hwconfig_init(guc);
if (ret)
return ret;
ret = xe_guc_enable_communication(guc);
if (ret)
return ret;
return 0 ;
}
int xe_guc_upload(struct xe_guc *guc)
{
xe_guc_ads_populate(&guc->ads);
return __xe_guc_upload(guc);
}
static void guc_handle_mmio_msg(struct xe_guc *guc)
{
struct xe_gt *gt = guc_to_gt(guc);
u32 msg;
if (IS_SRIOV_VF(guc_to_xe(guc)))
return ;
xe_force_wake_assert_held(gt_to_fw(gt), XE_FW_GT);
msg = xe_mmio_read32(>->mmio, SOFT_SCRATCH(15 ));
msg &= XE_GUC_RECV_MSG_EXCEPTION |
XE_GUC_RECV_MSG_CRASH_DUMP_POSTED;
xe_mmio_write32(>->mmio, SOFT_SCRATCH(15 ), 0 );
if (msg & XE_GUC_RECV_MSG_CRASH_DUMP_POSTED)
xe_gt_err(gt, "Received early GuC crash dump notification!\n" );
if (msg & XE_GUC_RECV_MSG_EXCEPTION)
xe_gt_err(gt, "Received early GuC exception notification!\n" );
}
static void guc_enable_irq(struct xe_guc *guc)
{
struct xe_gt *gt = guc_to_gt(guc);
u32 events = xe_gt_is_media_type(gt) ?
REG_FIELD_PREP(ENGINE0_MASK, GUC_INTR_GUC2HOST) :
REG_FIELD_PREP(ENGINE1_MASK, GUC_INTR_GUC2HOST);
/* Primary GuC and media GuC share a single enable bit */
xe_mmio_write32(>->mmio, GUC_SG_INTR_ENABLE,
REG_FIELD_PREP(ENGINE1_MASK, GUC_INTR_GUC2HOST));
/*
* There are separate mask bits for primary and media GuCs , so use
* a RMW operation to avoid clobbering the other GuC ' s setting .
*/
xe_mmio_rmw32(>->mmio, GUC_SG_INTR_MASK, events, 0 );
}
int xe_guc_enable_communication(struct xe_guc *guc)
{
struct xe_device *xe = guc_to_xe(guc);
int err;
if (IS_SRIOV_VF(xe) && xe_device_has_memirq(xe)) {
struct xe_gt *gt = guc_to_gt(guc);
struct xe_tile *tile = gt_to_tile(gt);
err = xe_memirq_init_guc(&tile->memirq, guc);
if (err)
return err;
} else {
guc_enable_irq(guc);
}
err = xe_guc_ct_enable(&guc->ct);
if (err)
return err;
guc_handle_mmio_msg(guc);
return 0 ;
}
int xe_guc_suspend(struct xe_guc *guc)
{
struct xe_gt *gt = guc_to_gt(guc);
u32 action[] = {
XE_GUC_ACTION_CLIENT_SOFT_RESET,
};
int ret;
ret = xe_guc_mmio_send(guc, action, ARRAY_SIZE(action));
if (ret) {
xe_gt_err(gt, "GuC suspend failed: %pe\n" , ERR_PTR(ret));
return ret;
}
xe_guc_sanitize(guc);
return 0 ;
}
void xe_guc_notify(struct xe_guc *guc)
{
struct xe_gt *gt = guc_to_gt(guc);
const u32 default_notify_data = 0 ;
/*
* Both GUC_HOST_INTERRUPT and MED_GUC_HOST_INTERRUPT can pass
* additional payload data to the GuC but this capability is not
* used by the firmware yet . Use default value in the meantime .
*/
xe_mmio_write32(>->mmio, guc->notify_reg, default_notify_data);
}
int xe_guc_auth_huc(struct xe_guc *guc, u32 rsa_addr)
{
u32 action[] = {
XE_GUC_ACTION_AUTHENTICATE_HUC,
rsa_addr
};
return xe_guc_ct_send_block(&guc->ct, action, ARRAY_SIZE(action));
}
int xe_guc_mmio_send_recv(struct xe_guc *guc, const u32 *request,
u32 len, u32 *response_buf)
{
struct xe_device *xe = guc_to_xe(guc);
struct xe_gt *gt = guc_to_gt(guc);
struct xe_mmio *mmio = >->mmio;
u32 header, reply;
struct xe_reg reply_reg = xe_gt_is_media_type(gt) ?
MED_VF_SW_FLAG(0 ) : VF_SW_FLAG(0 );
const u32 LAST_INDEX = VF_SW_FLAG_COUNT - 1 ;
bool lost = false ;
int ret;
int i;
BUILD_BUG_ON(VF_SW_FLAG_COUNT != MED_VF_SW_FLAG_COUNT);
xe_assert(xe, len);
xe_assert(xe, len <= VF_SW_FLAG_COUNT);
xe_assert(xe, len <= MED_VF_SW_FLAG_COUNT);
xe_assert(xe, FIELD_GET(GUC_HXG_MSG_0_ORIGIN, request[0 ]) ==
GUC_HXG_ORIGIN_HOST);
xe_assert(xe, FIELD_GET(GUC_HXG_MSG_0_TYPE, request[0 ]) ==
GUC_HXG_TYPE_REQUEST);
retry:
/* Not in critical data-path, just do if else for GT type */
if (xe_gt_is_media_type(gt)) {
for (i = 0 ; i < len; ++i)
xe_mmio_write32(mmio, MED_VF_SW_FLAG(i),
request[i]);
xe_mmio_read32(mmio, MED_VF_SW_FLAG(LAST_INDEX));
} else {
for (i = 0 ; i < len; ++i)
xe_mmio_write32(mmio, VF_SW_FLAG(i),
request[i]);
xe_mmio_read32(mmio, VF_SW_FLAG(LAST_INDEX));
}
xe_guc_notify(guc);
ret = xe_mmio_wait32(mmio, reply_reg, GUC_HXG_MSG_0_ORIGIN,
FIELD_PREP(GUC_HXG_MSG_0_ORIGIN, GUC_HXG_ORIGIN_GUC),
50000 , &reply, false );
if (ret) {
/* scratch registers might be cleared during FLR, try once more */
if (!reply && !lost) {
xe_gt_dbg(gt, "GuC mmio request %#x: lost, trying again\n" , request[0 ]);
lost = true ;
goto retry;
}
timeout:
xe_gt_err(gt, "GuC mmio request %#x: no reply %#x\n" ,
request[0 ], reply);
return ret;
}
header = xe_mmio_read32(mmio, reply_reg);
if (FIELD_GET(GUC_HXG_MSG_0_TYPE, header) ==
GUC_HXG_TYPE_NO_RESPONSE_BUSY) {
/*
* Once we got a BUSY reply we must wait again for the final
* response but this time we can ' t use ORIGIN mask anymore .
* To spot a right change in the reply , we take advantage that
* response SUCCESS and FAILURE differ only by the single bit
* and all other bits are set and can be used as a new mask .
*/
u32 resp_bits = GUC_HXG_TYPE_RESPONSE_SUCCESS & GUC_HXG_TYPE_RESPONSE_FAILURE;
u32 resp_mask = FIELD_PREP(GUC_HXG_MSG_0_TYPE, resp_bits);
BUILD_BUG_ON(FIELD_MAX(GUC_HXG_MSG_0_TYPE) != GUC_HXG_TYPE_RESPONSE_SUCCESS);
BUILD_BUG_ON((GUC_HXG_TYPE_RESPONSE_SUCCESS ^ GUC_HXG_TYPE_RESPONSE_FAILURE) != 1 );
ret = xe_mmio_wait32(mmio, reply_reg, resp_mask, resp_mask,
1000000 , &header, false );
if (unlikely(FIELD_GET(GUC_HXG_MSG_0_ORIGIN, header) !=
GUC_HXG_ORIGIN_GUC))
goto proto;
if (unlikely(ret)) {
if (FIELD_GET(GUC_HXG_MSG_0_TYPE, header) !=
GUC_HXG_TYPE_NO_RESPONSE_BUSY)
goto proto;
goto timeout;
}
}
if (FIELD_GET(GUC_HXG_MSG_0_TYPE, header) ==
GUC_HXG_TYPE_NO_RESPONSE_RETRY) {
u32 reason = FIELD_GET(GUC_HXG_RETRY_MSG_0_REASON, header);
xe_gt_dbg(gt, "GuC mmio request %#x: retrying, reason %#x\n" ,
request[0 ], reason);
goto retry;
}
if (FIELD_GET(GUC_HXG_MSG_0_TYPE, header) ==
GUC_HXG_TYPE_RESPONSE_FAILURE) {
u32 hint = FIELD_GET(GUC_HXG_FAILURE_MSG_0_HINT, header);
u32 error = FIELD_GET(GUC_HXG_FAILURE_MSG_0_ERROR, header);
xe_gt_err(gt, "GuC mmio request %#x: failure %#x hint %#x\n" ,
request[0 ], error, hint);
return -ENXIO;
}
if (FIELD_GET(GUC_HXG_MSG_0_TYPE, header) !=
GUC_HXG_TYPE_RESPONSE_SUCCESS) {
proto:
xe_gt_err(gt, "GuC mmio request %#x: unexpected reply %#x\n" ,
request[0 ], header);
return -EPROTO;
}
/* Just copy entire possible message response */
if (response_buf) {
response_buf[0 ] = header;
for (i = 1 ; i < VF_SW_FLAG_COUNT; i++) {
reply_reg.addr += sizeof (u32);
response_buf[i] = xe_mmio_read32(mmio, reply_reg);
}
}
/* Use data from the GuC response as our return value */
return FIELD_GET(GUC_HXG_RESPONSE_MSG_0_DATA0, header);
}
ALLOW_ERROR_INJECTION(xe_guc_mmio_send_recv, ERRNO);
int xe_guc_mmio_send(struct xe_guc *guc, const u32 *request, u32 len)
{
return xe_guc_mmio_send_recv(guc, request, len, NULL);
}
static int guc_self_cfg(struct xe_guc *guc, u16 key, u16 len, u64 val)
{
struct xe_device *xe = guc_to_xe(guc);
u32 request[HOST2GUC_SELF_CFG_REQUEST_MSG_LEN] = {
FIELD_PREP(GUC_HXG_MSG_0_ORIGIN, GUC_HXG_ORIGIN_HOST) |
FIELD_PREP(GUC_HXG_MSG_0_TYPE, GUC_HXG_TYPE_REQUEST) |
FIELD_PREP(GUC_HXG_REQUEST_MSG_0_ACTION,
GUC_ACTION_HOST2GUC_SELF_CFG),
FIELD_PREP(HOST2GUC_SELF_CFG_REQUEST_MSG_1_KLV_KEY, key) |
FIELD_PREP(HOST2GUC_SELF_CFG_REQUEST_MSG_1_KLV_LEN, len),
FIELD_PREP(HOST2GUC_SELF_CFG_REQUEST_MSG_2_VALUE32,
lower_32_bits(val)),
FIELD_PREP(HOST2GUC_SELF_CFG_REQUEST_MSG_3_VALUE64,
upper_32_bits(val)),
};
int ret;
xe_assert(xe, len <= 2 );
xe_assert(xe, len != 1 || !upper_32_bits(val));
/* Self config must go over MMIO */
ret = xe_guc_mmio_send(guc, request, ARRAY_SIZE(request));
if (unlikely(ret < 0 ))
return ret;
if (unlikely(ret > 1 ))
return -EPROTO;
if (unlikely(!ret))
return -ENOKEY;
return 0 ;
}
int xe_guc_self_cfg32(struct xe_guc *guc, u16 key, u32 val)
{
return guc_self_cfg(guc, key, 1 , val);
}
int xe_guc_self_cfg64(struct xe_guc *guc, u16 key, u64 val)
{
return guc_self_cfg(guc, key, 2 , val);
}
static void xe_guc_sw_0_irq_handler(struct xe_guc *guc)
{
struct xe_gt *gt = guc_to_gt(guc);
if (IS_SRIOV_VF(gt_to_xe(gt)))
xe_gt_sriov_vf_migrated_event_handler(gt);
}
void xe_guc_irq_handler(struct xe_guc *guc, const u16 iir)
{
if (iir & GUC_INTR_GUC2HOST)
xe_guc_ct_irq_handler(&guc->ct);
if (iir & GUC_INTR_SW_INT_0)
xe_guc_sw_0_irq_handler(guc);
}
void xe_guc_sanitize(struct xe_guc *guc)
{
xe_uc_fw_sanitize(&guc->fw);
xe_guc_ct_disable(&guc->ct);
xe_guc_submit_disable(guc);
}
int xe_guc_reset_prepare(struct xe_guc *guc)
{
return xe_guc_submit_reset_prepare(guc);
}
void xe_guc_reset_wait(struct xe_guc *guc)
{
xe_guc_submit_reset_wait(guc);
}
void xe_guc_stop_prepare(struct xe_guc *guc)
{
if (!IS_SRIOV_VF(guc_to_xe(guc))) {
int err;
err = xe_guc_pc_stop(&guc->pc);
xe_gt_WARN(guc_to_gt(guc), err, "Failed to stop GuC PC: %pe\n" ,
ERR_PTR(err));
}
}
void xe_guc_stop(struct xe_guc *guc)
{
xe_guc_ct_stop(&guc->ct);
xe_guc_submit_stop(guc);
}
int xe_guc_start(struct xe_guc *guc)
{
return xe_guc_submit_start(guc);
}
void xe_guc_print_info(struct xe_guc *guc, struct drm_printer *p)
{
struct xe_gt *gt = guc_to_gt(guc);
unsigned int fw_ref;
u32 status;
int i;
xe_uc_fw_print(&guc->fw, p);
if (!IS_SRIOV_VF(gt_to_xe(gt))) {
fw_ref = xe_force_wake_get(gt_to_fw(gt), XE_FW_GT);
if (!fw_ref)
return ;
status = xe_mmio_read32(>->mmio, GUC_STATUS);
drm_printf(p, "\nGuC status 0x%08x:\n" , status);
drm_printf(p, "\tBootrom status = 0x%x\n" ,
REG_FIELD_GET(GS_BOOTROM_MASK, status));
drm_printf(p, "\tuKernel status = 0x%x\n" ,
REG_FIELD_GET(GS_UKERNEL_MASK, status));
drm_printf(p, "\tMIA Core status = 0x%x\n" ,
REG_FIELD_GET(GS_MIA_MASK, status));
drm_printf(p, "\tLog level = %d\n" ,
xe_guc_log_get_level(&guc->log));
drm_puts(p, "\nScratch registers:\n" );
for (i = 0 ; i < SOFT_SCRATCH_COUNT; i++) {
drm_printf(p, "\t%2d: \t0x%x\n" ,
i, xe_mmio_read32(>->mmio, SOFT_SCRATCH(i)));
}
xe_force_wake_put(gt_to_fw(gt), fw_ref);
}
drm_puts(p, "\n" );
xe_guc_ct_print(&guc->ct, p, false );
drm_puts(p, "\n" );
xe_guc_submit_print(guc, p);
}
/**
* xe_guc_declare_wedged ( ) - Declare GuC wedged
* @ guc : the GuC object
*
* Wedge the GuC which stops all submission , saves desired debug state , and
* cleans up anything which could timeout .
*/
void xe_guc_declare_wedged(struct xe_guc *guc)
{
xe_gt_assert(guc_to_gt(guc), guc_to_xe(guc)->wedged.mode);
xe_guc_reset_prepare(guc);
xe_guc_ct_stop(&guc->ct);
xe_guc_submit_wedge(guc);
}
Messung V0.5 in Prozent C=99 H=94 G=96
¤ Dauer der Verarbeitung: 0.21 Sekunden
(vorverarbeitet am 2026-09-29)
¤
*© Formatika GbR, Deutschland