accel/amdxdna: Add hardware specific attributes

Add three hardware specific attributes to describe device capabilities:
  hwctx_limit: The maximum number of hardware context supported.
  max_tops: The maximum TOPS supported.
  curr_tops: The TOPS achievable with the current power and frequency
             configuration.

Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20251104062546.833771-1-lizhi.hou@amd.com

Author: houlz0507

drivers/accel/amdxdna/aie2_pci.h

@@ -195,6 +195,8 @@ struct amdxdna_dev_hdl {
 	u32				clk_gating;
 	u32				npuclk_freq;
 	u32				hclk_freq;
+	u32				max_tops;
+	u32				curr_tops;
 
 	/* Mailbox and the management channel */
 	struct mailbox			*mbox;
@@ -246,6 +248,7 @@ struct amdxdna_dev_priv {
 	u32				mbox_dev_addr;
 	/* If mbox_size is 0, use BAR size. See MBOX_SIZE macro */
 	u32				mbox_size;
+	u32				hwctx_limit;
 	u32				sram_dev_addr;
 	struct aie2_bar_off_pair	sram_offs[SRAM_MAX_INDEX];
 	struct aie2_bar_off_pair	psp_regs_off[PSP_MAX_REGS];

drivers/accel/amdxdna/aie2_smu.c

@@ -23,6 +23,13 @@
 #define AIE2_SMU_SET_SOFT_DPMLEVEL	0x7
 #define AIE2_SMU_SET_HARD_DPMLEVEL	0x8
 
+#define NPU4_DPM_TOPS(ndev, dpm_level) \
+({ \
+	typeof(ndev) _ndev = ndev; \
+	(4096 * (_ndev)->total_col * \
+	 (_ndev)->priv->dpm_clk_tbl[dpm_level].hclk / 1000000); \
+})
+
 static int aie2_smu_exec(struct amdxdna_dev_hdl *ndev, u32 reg_cmd,
 			 u32 reg_arg, u32 *out)
 {
@@ -84,6 +91,8 @@ int npu1_set_dpm(struct amdxdna_dev_hdl *ndev, u32 dpm_level)
 	amdxdna_pm_suspend_put(ndev->xdna);
 	ndev->hclk_freq = freq;
 	ndev->dpm_level = dpm_level;
+	ndev->max_tops = 2 * ndev->total_col;
+	ndev->curr_tops = ndev->max_tops * freq / 1028;
 
 	XDNA_DBG(ndev->xdna, "MP-NPU clock %d, H clock %d\n",
 		 ndev->npuclk_freq, ndev->hclk_freq);
@@ -121,6 +130,8 @@ int npu4_set_dpm(struct amdxdna_dev_hdl *ndev, u32 dpm_level)
 	ndev->npuclk_freq = ndev->priv->dpm_clk_tbl[dpm_level].npuclk;
 	ndev->hclk_freq = ndev->priv->dpm_clk_tbl[dpm_level].hclk;
 	ndev->dpm_level = dpm_level;
+	ndev->max_tops = NPU4_DPM_TOPS(ndev, ndev->max_dpm_level);
+	ndev->curr_tops = NPU4_DPM_TOPS(ndev, dpm_level);
 
 	XDNA_DBG(ndev->xdna, "MP-NPU clock %d, H clock %d\n",
 		 ndev->npuclk_freq, ndev->hclk_freq);

drivers/accel/amdxdna/npu1_regs.c

@@ -79,6 +79,7 @@ static const struct amdxdna_dev_priv npu1_dev_priv = {
 	.mbox_dev_addr  = NPU1_MBOX_BAR_BASE,
 	.mbox_size      = 0, /* Use BAR size */
 	.sram_dev_addr  = NPU1_SRAM_BAR_BASE,
+	.hwctx_limit    = 6,
 	.sram_offs      = {
 		DEFINE_BAR_OFFSET(MBOX_CHANN_OFF, NPU1_SRAM, MPNPU_SRAM_X2I_MAILBOX_0),
 		DEFINE_BAR_OFFSET(FW_ALIVE_OFF,   NPU1_SRAM, MPNPU_SRAM_I2X_MAILBOX_15),

drivers/accel/amdxdna/npu2_regs.c

@@ -72,6 +72,7 @@ static const struct amdxdna_dev_priv npu2_dev_priv = {
 	.mbox_dev_addr  = NPU2_MBOX_BAR_BASE,
 	.mbox_size      = 0, /* Use BAR size */
 	.sram_dev_addr  = NPU2_SRAM_BAR_BASE,
+	.hwctx_limit    = 16,
 	.sram_offs      = {
 		DEFINE_BAR_OFFSET(MBOX_CHANN_OFF, NPU2_SRAM, MPNPU_SRAM_X2I_MAILBOX_0),
 		DEFINE_BAR_OFFSET(FW_ALIVE_OFF,   NPU2_SRAM, MPNPU_SRAM_X2I_MAILBOX_15),

drivers/accel/amdxdna/npu4_regs.c

@@ -99,6 +99,7 @@ static const struct amdxdna_dev_priv npu4_dev_priv = {
 	.mbox_dev_addr  = NPU4_MBOX_BAR_BASE,
 	.mbox_size      = 0, /* Use BAR size */
 	.sram_dev_addr  = NPU4_SRAM_BAR_BASE,
+	.hwctx_limit    = 16,
 	.sram_offs      = {
 		DEFINE_BAR_OFFSET(MBOX_CHANN_OFF, NPU4_SRAM, MPNPU_SRAM_X2I_MAILBOX_0),
 		DEFINE_BAR_OFFSET(FW_ALIVE_OFF,   NPU4_SRAM, MPNPU_SRAM_X2I_MAILBOX_15),

drivers/accel/amdxdna/npu5_regs.c

@@ -72,6 +72,7 @@ static const struct amdxdna_dev_priv npu5_dev_priv = {
 	.mbox_dev_addr  = NPU5_MBOX_BAR_BASE,
 	.mbox_size      = 0, /* Use BAR size */
 	.sram_dev_addr  = NPU5_SRAM_BAR_BASE,
+	.hwctx_limit    = 16,
 	.sram_offs      = {
 		DEFINE_BAR_OFFSET(MBOX_CHANN_OFF, NPU5_SRAM, MPNPU_SRAM_X2I_MAILBOX_0),
 		DEFINE_BAR_OFFSET(FW_ALIVE_OFF,   NPU5_SRAM, MPNPU_SRAM_X2I_MAILBOX_15),

drivers/accel/amdxdna/npu6_regs.c

@@ -72,6 +72,7 @@ static const struct amdxdna_dev_priv npu6_dev_priv = {
 	.mbox_dev_addr  = NPU6_MBOX_BAR_BASE,
 	.mbox_size      = 0, /* Use BAR size */
 	.sram_dev_addr  = NPU6_SRAM_BAR_BASE,
+	.hwctx_limit    = 16,
 	.sram_offs      = {
 		DEFINE_BAR_OFFSET(MBOX_CHANN_OFF, NPU6_SRAM, MPNPU_SRAM_X2I_MAILBOX_0),
 		DEFINE_BAR_OFFSET(FW_ALIVE_OFF,   NPU6_SRAM, MPNPU_SRAM_X2I_MAILBOX_15),