[PATCH v2] drm/xe/guc: Add XE_LP steered register lists
Zhanjun Dong
zhanjun.dong at intel.com
Tue Jan 16 23:15:55 UTC 2024
Add the ability for runtime allocation and freeing of
steered register list extentions that depend on the
detected HW config fuses.
Signed-off-by: Zhanjun Dong <zhanjun.dong at intel.com>
---
drivers/gpu/drm/xe/xe_guc_capture.c | 187 +++++++++++++++++++++++++++-
1 file changed, 185 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_guc_capture.c b/drivers/gpu/drm/xe/xe_guc_capture.c
index 52435a0468db..bcb23a89606f 100644
--- a/drivers/gpu/drm/xe/xe_guc_capture.c
+++ b/drivers/gpu/drm/xe/xe_guc_capture.c
@@ -94,6 +94,81 @@
{ SFC_DONE(2), 0, 0, "SFC_DONE[2]" }, \
{ SFC_DONE(3), 0, 0, "SFC_DONE[3]" }
+/* XE_LP Global */
+static const struct __guc_mmio_reg_descr xe_lp_global_regs[] = {
+ COMMON_XELP_BASE_GLOBAL,
+};
+
+/* XE_LP Render / Compute Per-Class */
+static const struct __guc_mmio_reg_descr xe_lp_rc_class_regs[] = {
+ COMMON_XELP_BASE_RENDER,
+};
+
+/* Pre-Xe Render / Compute Per-Engine-Instance */
+static const struct __guc_mmio_reg_descr pre_xe_rc_inst_regs[] = {
+ COMMON_BASE_ENGINE_INSTANCE,
+};
+
+/* Pre-Xe Media Decode/Encode Per-Engine-Instance */
+static const struct __guc_mmio_reg_descr pre_xe_vd_inst_regs[] = {
+ COMMON_BASE_ENGINE_INSTANCE,
+};
+
+/* XE_LP Video Enhancement Per-Class */
+static const struct __guc_mmio_reg_descr xe_lp_vec_class_regs[] = {
+ COMMON_XELP_BASE_VEC,
+};
+
+/* Pre-Xe Video Enhancement Per-Engine-Instance */
+static const struct __guc_mmio_reg_descr pre_xe_vec_inst_regs[] = {
+ COMMON_BASE_ENGINE_INSTANCE,
+};
+
+/* Pre-Xe Blitter Per-Engine-Instance */
+static const struct __guc_mmio_reg_descr pre_xe_blt_inst_regs[] = {
+ COMMON_BASE_ENGINE_INSTANCE,
+};
+
+/* XE_LP - GSC Per-Engine-Instance */
+static const struct __guc_mmio_reg_descr xe_lp_gsc_inst_regs[] = {
+ COMMON_BASE_ENGINE_INSTANCE,
+};
+
+/*
+ * Empty list to prevent warnings about unknown class/instance types
+ * as not all class/instanace types have entries on all platforms.
+ */
+static const struct __guc_mmio_reg_descr empty_regs_list[] = {
+};
+
+#define TO_GCAP_DEF_OWNER(x) (GUC_CAPTURE_LIST_INDEX_##x)
+#define TO_GCAP_DEF_TYPE(x) (GUC_CAPTURE_LIST_TYPE_##x)
+#define MAKE_REGLIST(regslist, regsowner, regstype, class) \
+ { \
+ regslist, \
+ ARRAY_SIZE(regslist), \
+ TO_GCAP_DEF_OWNER(regsowner), \
+ TO_GCAP_DEF_TYPE(regstype), \
+ class, \
+ NULL, \
+ }
+
+/* List of lists */
+static const struct __guc_mmio_reg_descr_group xe_lp_lists[] = {
+ MAKE_REGLIST(xe_lp_global_regs, PF, GLOBAL, 0),
+ MAKE_REGLIST(xe_lp_rc_class_regs, PF, ENGINE_CLASS, GUC_CAPTURE_LIST_CLASS_RENDER_COMPUTE),
+ MAKE_REGLIST(pre_xe_rc_inst_regs, PF, ENGINE_INSTANCE, GUC_CAPTURE_LIST_CLASS_RENDER_COMPUTE),
+ MAKE_REGLIST(empty_regs_list, PF, ENGINE_CLASS, GUC_CAPTURE_LIST_CLASS_VIDEO),
+ MAKE_REGLIST(pre_xe_vd_inst_regs, PF, ENGINE_INSTANCE, GUC_CAPTURE_LIST_CLASS_VIDEO),
+ MAKE_REGLIST(xe_lp_vec_class_regs, PF, ENGINE_CLASS, GUC_CAPTURE_LIST_CLASS_VIDEOENHANCE),
+ MAKE_REGLIST(pre_xe_vec_inst_regs, PF, ENGINE_INSTANCE, GUC_CAPTURE_LIST_CLASS_VIDEOENHANCE),
+ MAKE_REGLIST(empty_regs_list, PF, ENGINE_CLASS, GUC_CAPTURE_LIST_CLASS_BLITTER),
+ MAKE_REGLIST(pre_xe_blt_inst_regs, PF, ENGINE_INSTANCE, GUC_CAPTURE_LIST_CLASS_BLITTER),
+ MAKE_REGLIST(empty_regs_list, PF, ENGINE_CLASS, GUC_CAPTURE_LIST_CLASS_GSC_OTHER),
+ MAKE_REGLIST(xe_lp_gsc_inst_regs, PF, ENGINE_INSTANCE, GUC_CAPTURE_LIST_CLASS_GSC_OTHER),
+ {}
+};
+
static const char * const capture_list_type_names[] = {
"Global",
"Class",
@@ -179,11 +254,119 @@ guc_capture_get_one_ext_list(struct __guc_mmio_reg_descr_group *reglists,
return NULL;
}
+struct __ext_steer_reg {
+ const char *name;
+ struct xe_reg_mcr reg;
+};
+
+static const struct __ext_steer_reg pre_xe_extregs[] = {
+ {"SAMPLER_INSTDONE", SAMPLER_INSTDONE},
+ {"ROW_INSTDONE", ROW_INSTDONE}
+};
+
+static const struct __ext_steer_reg xehpg_extregs[] = {
+ {"XEHPG_INSTDONE_GEOM_SVG", XEHPG_INSTDONE_GEOM_SVG}
+};
+
+static void __fill_ext_reg(struct __guc_mmio_reg_descr *ext,
+ const struct __ext_steer_reg *extlist,
+ int slice_id, int subslice_id)
+{
+ ext->reg = XE_REG(extlist->reg.__reg.addr);
+ ext->flags = FIELD_PREP(GUC_REGSET_STEERING_GROUP, slice_id);
+ ext->flags |= FIELD_PREP(GUC_REGSET_STEERING_INSTANCE, subslice_id);
+ ext->regname = extlist->name;
+}
+
+static int
+__alloc_ext_regs(struct __guc_mmio_reg_descr_group *newlist,
+ const struct __guc_mmio_reg_descr_group *rootlist, int num_regs)
+{
+ struct __guc_mmio_reg_descr *list;
+
+ list = kcalloc(num_regs, sizeof(struct __guc_mmio_reg_descr), GFP_KERNEL);
+ if (!list)
+ return -ENOMEM;
+
+ newlist->extlist = list;
+ newlist->num_regs = num_regs;
+ newlist->owner = rootlist->owner;
+ newlist->engine = rootlist->engine;
+ newlist->type = rootlist->type;
+
+ return 0;
+}
+
+static void
+guc_capture_alloc_steered_lists(struct xe_guc *guc, const struct __guc_mmio_reg_descr_group *lists)
+{
+ struct xe_gt *gt = guc_to_gt(guc);
+ int slice, subslice, iter, i, num_steer_regs, num_tot_regs = 0;
+ const struct __guc_mmio_reg_descr_group *list;
+ struct __guc_mmio_reg_descr_group *extlists;
+ struct __guc_mmio_reg_descr *extarray;
+ bool has_xehpg_extregs;
+
+ /* steered registers currently only exist for the render-class */
+ list = guc_capture_get_one_list(lists, GUC_CAPTURE_LIST_INDEX_PF,
+ GUC_CAPTURE_LIST_TYPE_ENGINE_CLASS,
+ GUC_CAPTURE_LIST_CLASS_RENDER_COMPUTE);
+ /* skip if extlists was previously allocated */
+ if (!list || guc->capture->extlists)
+ return;
+
+ has_xehpg_extregs = GRAPHICS_VERx100(gt_to_xe(gt)) >= 1255;
+
+ num_steer_regs = ARRAY_SIZE(pre_xe_extregs);
+ if (has_xehpg_extregs)
+ num_steer_regs += ARRAY_SIZE(xehpg_extregs);
+
+ num_tot_regs += num_steer_regs * bitmap_weight(gt->fuse_topo.g_dss_mask,
+ sizeof(gt->fuse_topo.g_dss_mask) * 8);
+ if (!num_tot_regs)
+ return;
+
+ /* allocate an extra for an end marker */
+ extlists = kcalloc(2, sizeof(struct __guc_mmio_reg_descr_group), GFP_KERNEL);
+ if (!extlists)
+ return;
+
+ if (__alloc_ext_regs(&extlists[0], list, num_tot_regs)) {
+ kfree(extlists);
+ return;
+ }
+
+ extarray = extlists[0].extlist;
+ for_each_ss_steering(iter, gt, slice, subslice) {
+ for (i = 0; i < ARRAY_SIZE(pre_xe_extregs); ++i) {
+ __fill_ext_reg(extarray, &pre_xe_extregs[i], slice, subslice);
+ ++extarray;
+ }
+
+ if (has_xehpg_extregs) {
+ for (i = 0; i < ARRAY_SIZE(xehpg_extregs); ++i) {
+ __fill_ext_reg(extarray, &xehpg_extregs[i], slice, subslice);
+ ++extarray;
+ }
+ }
+ }
+
+ xe_gt_dbg(guc_to_gt(guc), "capture found %d ext-regs.\n", num_tot_regs);
+ guc->capture->extlists = extlists;
+}
+
static const struct __guc_mmio_reg_descr_group *
guc_capture_get_device_reglist(struct xe_guc *guc)
{
- //FIXME: add register list
- return NULL;
+ /*
+ * For certain engine classes, there are slice and subslice
+ * level registers requiring steering. We allocate and populate
+ * these at init time based on hw config add it as an extension
+ * list at the end of the pre-populated render list.
+ */
+ guc_capture_alloc_steered_lists(guc, xe_lp_lists);
+
+ return xe_lp_lists;
}
static int
--
2.34.1
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