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| author | Matthew Brost <matthew.brost@intel.com> | 2023-01-13 01:25:33 +0300 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2023-12-12 22:06:00 +0300 |
| commit | 5e37266307df08f981d929c267bab6bfae8c4d53 (patch) | |
| tree | 5403961e926a4486d0f53f3bcdded9ad68a76944 /drivers/gpu/drm/xe/xe_guc.c | |
| parent | f900725af8b66ec8484680c693fa4ae93cb7259d (diff) | |
| download | linux-5e37266307df08f981d929c267bab6bfae8c4d53.tar.xz | |
drm/xe/guc: Add support GuC MMIO send / recv
SRIOV has a use case of GuC MMIO send / recv, add a function for it.
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Philippe Lecluse <philippe.lecluse1@gmail.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/gpu/drm/xe/xe_guc.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_guc.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/gpu/drm/xe/xe_guc.c b/drivers/gpu/drm/xe/xe_guc.c index 2efa01dfff6d..88a3a96da084 100644 --- a/drivers/gpu/drm/xe/xe_guc.c +++ b/drivers/gpu/drm/xe/xe_guc.c @@ -630,7 +630,8 @@ int xe_guc_auth_huc(struct xe_guc *guc, u32 rsa_addr) #define MEDIA_SOFT_SCRATCH(n) _MMIO(0x190310 + (n) * 4) #define MEDIA_SOFT_SCRATCH_COUNT 4 -int xe_guc_mmio_send(struct xe_guc *guc, const u32 *request, u32 len) +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); @@ -640,6 +641,7 @@ int xe_guc_mmio_send(struct xe_guc *guc, const u32 *request, u32 len) int ret; int i; + BUILD_BUG_ON(GEN11_SOFT_SCRATCH_COUNT != MEDIA_SOFT_SCRATCH_COUNT); XE_BUG_ON(guc->ct.enabled); XE_BUG_ON(!len); XE_BUG_ON(len > GEN11_SOFT_SCRATCH_COUNT); @@ -723,10 +725,24 @@ proto: return -EPROTO; } + /* Just copy entire possible message response */ + if (response_buf) { + response_buf[0] = header; + + for (i = 1; i < GEN11_SOFT_SCRATCH_COUNT; i++) + response_buf[i] = + xe_mmio_read32(gt, reply_reg + i * sizeof(u32)); + } + /* Use data from the GuC response as our return value */ return FIELD_GET(GUC_HXG_RESPONSE_MSG_0_DATA0, header); } +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) { u32 request[HOST2GUC_SELF_CFG_REQUEST_MSG_LEN] = { |