drm/xe/soc_remapper: Add system controller config for SoC remapper

Define system controller config bits and helpers for SoC remapper.

Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Badal Nilawar <badal.nilawar@intel.com>
Link: https://patch.msgid.link/20251223183943.3175941-8-umesh.nerlige.ramappa@intel.com

Author: unerlige

drivers/gpu/drm/xe/regs/xe_soc_remapper_regs.h

@@ -9,5 +9,6 @@
 
 #define SG_REMAP_INDEX1			XE_REG(SOC_BASE + 0x08)
 #define   SG_REMAP_TELEM_MASK		REG_GENMASK(31, 24)
+#define   SG_REMAP_SYSCTRL_MASK		REG_GENMASK(23, 16)
 
 #endif

drivers/gpu/drm/xe/xe_device_types.h

@@ -334,6 +334,8 @@ struct xe_device {
 		u8 has_pxp:1;
 		/** @info.has_range_tlb_inval: Has range based TLB invalidations */
 		u8 has_range_tlb_inval:1;
+		/** @info.has_soc_remapper_sysctrl: Has SoC remapper system controller */
+		u8 has_soc_remapper_sysctrl:1;
 		/** @info.has_soc_remapper_telem: Has SoC remapper telemetry support */
 		u8 has_soc_remapper_telem:1;
 		/** @info.has_sriov: Supports SR-IOV */
@@ -587,6 +589,9 @@ struct xe_device {
 
 		/** @soc_remapper.set_telem_region: Set telemetry index */
 		void (*set_telem_region)(struct xe_device *xe, u32 index);
+
+		/** @soc_remapper.set_sysctrl_region: Set system controller index */
+		void (*set_sysctrl_region)(struct xe_device *xe, u32 index);
 	} soc_remapper;
 
 	/**

drivers/gpu/drm/xe/xe_pci.c

@@ -422,6 +422,7 @@ static const struct xe_device_desc cri_desc = {
 	.has_mbx_power_limits = true,
 	.has_mert = true,
 	.has_pre_prod_wa = 1,
+	.has_soc_remapper_sysctrl = true,
 	.has_soc_remapper_telem = true,
 	.has_sriov = true,
 	.max_gt_per_tile = 2,
@@ -694,6 +695,7 @@ static int xe_info_init_early(struct xe_device *xe,
 	xe->info.has_page_reclaim_hw_assist = desc->has_page_reclaim_hw_assist;
 	xe->info.has_pre_prod_wa = desc->has_pre_prod_wa;
 	xe->info.has_pxp = desc->has_pxp;
+	xe->info.has_soc_remapper_sysctrl = desc->has_soc_remapper_sysctrl;
 	xe->info.has_soc_remapper_telem = desc->has_soc_remapper_telem;
 	xe->info.has_sriov = xe_configfs_primary_gt_allowed(to_pci_dev(xe->drm.dev)) &&
 		desc->has_sriov;

drivers/gpu/drm/xe/xe_pci_types.h

@@ -53,6 +53,7 @@ struct xe_device_desc {
 	u8 has_pre_prod_wa:1;
 	u8 has_page_reclaim_hw_assist:1;
 	u8 has_pxp:1;
+	u8 has_soc_remapper_sysctrl:1;
 	u8 has_soc_remapper_telem:1;
 	u8 has_sriov:1;
 	u8 needs_scratch:1;

drivers/gpu/drm/xe/xe_soc_remapper.c

@@ -20,6 +20,12 @@ static void xe_soc_remapper_set_telem_region(struct xe_device *xe, u32 index)
 				   REG_FIELD_PREP(SG_REMAP_TELEM_MASK, index));
 }
 
+static void xe_soc_remapper_set_sysctrl_region(struct xe_device *xe, u32 index)
+{
+	xe_soc_remapper_set_region(xe, SG_REMAP_INDEX1, SG_REMAP_SYSCTRL_MASK,
+				   REG_FIELD_PREP(SG_REMAP_SYSCTRL_MASK, index));
+}
+
 /**
  * xe_soc_remapper_init() - Initialize SoC remapper
  * @xe: Pointer to xe device.
@@ -30,10 +36,17 @@ static void xe_soc_remapper_set_telem_region(struct xe_device *xe, u32 index)
  */
 int xe_soc_remapper_init(struct xe_device *xe)
 {
-	if (xe->info.has_soc_remapper_telem) {
+	bool has_soc_remapper = xe->info.has_soc_remapper_telem ||
+				xe->info.has_soc_remapper_sysctrl;
+
+	if (has_soc_remapper)
 		spin_lock_init(&xe->soc_remapper.lock);
+
+	if (xe->info.has_soc_remapper_telem)
 		xe->soc_remapper.set_telem_region = xe_soc_remapper_set_telem_region;
-	}
+
+	if (xe->info.has_soc_remapper_sysctrl)
+		xe->soc_remapper.set_sysctrl_region = xe_soc_remapper_set_sysctrl_region;
 
 	return 0;
 }