1 files changed, 336 insertions, 0 deletions
diff --git a/drivers/dma/idxd/registers.h b/drivers/dma/idxd/registers.h
new file mode 100644
index 000000000000..a39e7ae6b3d9
--- /dev/null
+++ b/drivers/dma/idxd/registers.h
@@ -0,0 +1,336 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright(c) 2019 Intel Corporation. All rights rsvd. */
+#ifndef _IDXD_REGISTERS_H_
+#define _IDXD_REGISTERS_H_
+
+/* PCI Config */
+#define PCI_DEVICE_ID_INTEL_DSA_SPR0	0x0b25
+
+#define IDXD_MMIO_BAR		0
+#define IDXD_WQ_BAR		2
+#define IDXD_PORTAL_SIZE	0x4000
+
+/* MMIO Device BAR0 Registers */
+#define IDXD_VER_OFFSET			0x00
+#define IDXD_VER_MAJOR_MASK		0xf0
+#define IDXD_VER_MINOR_MASK		0x0f
+#define GET_IDXD_VER_MAJOR(x)		(((x) & IDXD_VER_MAJOR_MASK) >> 4)
+#define GET_IDXD_VER_MINOR(x)		((x) & IDXD_VER_MINOR_MASK)
+
+union gen_cap_reg {
+	struct {
+		u64 block_on_fault:1;
+		u64 overlap_copy:1;
+		u64 cache_control_mem:1;
+		u64 cache_control_cache:1;
+		u64 rsvd:3;
+		u64 int_handle_req:1;
+		u64 dest_readback:1;
+		u64 drain_readback:1;
+		u64 rsvd2:6;
+		u64 max_xfer_shift:5;
+		u64 max_batch_shift:4;
+		u64 max_ims_mult:6;
+		u64 config_en:1;
+		u64 max_descs_per_engine:8;
+		u64 rsvd3:24;
+	};
+	u64 bits;
+} __packed;
+#define IDXD_GENCAP_OFFSET		0x10
+
+union wq_cap_reg {
+	struct {
+		u64 total_wq_size:16;
+		u64 num_wqs:8;
+		u64 rsvd:24;
+		u64 shared_mode:1;
+		u64 dedicated_mode:1;
+		u64 rsvd2:1;
+		u64 priority:1;
+		u64 occupancy:1;
+		u64 occupancy_int:1;
+		u64 rsvd3:10;
+	};
+	u64 bits;
+} __packed;
+#define IDXD_WQCAP_OFFSET		0x20
+
+union group_cap_reg {
+	struct {
+		u64 num_groups:8;
+		u64 total_tokens:8;
+		u64 token_en:1;
+		u64 token_limit:1;
+		u64 rsvd:46;
+	};
+	u64 bits;
+} __packed;
+#define IDXD_GRPCAP_OFFSET		0x30
+
+union engine_cap_reg {
+	struct {
+		u64 num_engines:8;
+		u64 rsvd:56;
+	};
+	u64 bits;
+} __packed;
+
+#define IDXD_ENGCAP_OFFSET		0x38
+
+#define IDXD_OPCAP_NOOP			0x0001
+#define IDXD_OPCAP_BATCH			0x0002
+#define IDXD_OPCAP_MEMMOVE		0x0008
+struct opcap {
+	u64 bits[4];
+};
+
+#define IDXD_OPCAP_OFFSET		0x40
+
+#define IDXD_TABLE_OFFSET		0x60
+union offsets_reg {
+	struct {
+		u64 grpcfg:16;
+		u64 wqcfg:16;
+		u64 msix_perm:16;
+		u64 ims:16;
+		u64 perfmon:16;
+		u64 rsvd:48;
+	};
+	u64 bits[2];
+} __packed;
+
+#define IDXD_GENCFG_OFFSET		0x80
+union gencfg_reg {
+	struct {
+		u32 token_limit:8;
+		u32 rsvd:4;
+		u32 user_int_en:1;
+		u32 rsvd2:19;
+	};
+	u32 bits;
+} __packed;
+
+#define IDXD_GENCTRL_OFFSET		0x88
+union genctrl_reg {
+	struct {
+		u32 softerr_int_en:1;
+		u32 rsvd:31;
+	};
+	u32 bits;
+} __packed;
+
+#define IDXD_GENSTATS_OFFSET		0x90
+union gensts_reg {
+	struct {
+		u32 state:2;
+		u32 reset_type:2;
+		u32 rsvd:28;
+	};
+	u32 bits;
+} __packed;
+
+enum idxd_device_status_state {
+	IDXD_DEVICE_STATE_DISABLED = 0,
+	IDXD_DEVICE_STATE_ENABLED,
+	IDXD_DEVICE_STATE_DRAIN,
+	IDXD_DEVICE_STATE_HALT,
+};
+
+enum idxd_device_reset_type {
+	IDXD_DEVICE_RESET_SOFTWARE = 0,
+	IDXD_DEVICE_RESET_FLR,
+	IDXD_DEVICE_RESET_WARM,
+	IDXD_DEVICE_RESET_COLD,
+};
+
+#define IDXD_INTCAUSE_OFFSET		0x98
+#define IDXD_INTC_ERR			0x01
+#define IDXD_INTC_CMD			0x02
+#define IDXD_INTC_OCCUPY			0x04
+#define IDXD_INTC_PERFMON_OVFL		0x08
+
+#define IDXD_CMD_OFFSET			0xa0
+union idxd_command_reg {
+	struct {
+		u32 operand:20;
+		u32 cmd:5;
+		u32 rsvd:6;
+		u32 int_req:1;
+	};
+	u32 bits;
+} __packed;
+
+enum idxd_cmd {
+	IDXD_CMD_ENABLE_DEVICE = 1,
+	IDXD_CMD_DISABLE_DEVICE,
+	IDXD_CMD_DRAIN_ALL,
+	IDXD_CMD_ABORT_ALL,
+	IDXD_CMD_RESET_DEVICE,
+	IDXD_CMD_ENABLE_WQ,
+	IDXD_CMD_DISABLE_WQ,
+	IDXD_CMD_DRAIN_WQ,
+	IDXD_CMD_ABORT_WQ,
+	IDXD_CMD_RESET_WQ,
+	IDXD_CMD_DRAIN_PASID,
+	IDXD_CMD_ABORT_PASID,
+	IDXD_CMD_REQUEST_INT_HANDLE,
+};
+
+#define IDXD_CMDSTS_OFFSET		0xa8
+union cmdsts_reg {
+	struct {
+		u8 err;
+		u16 result;
+		u8 rsvd:7;
+		u8 active:1;
+	};
+	u32 bits;
+} __packed;
+#define IDXD_CMDSTS_ACTIVE		0x80000000
+
+enum idxd_cmdsts_err {
+	IDXD_CMDSTS_SUCCESS = 0,
+	IDXD_CMDSTS_INVAL_CMD,
+	IDXD_CMDSTS_INVAL_WQIDX,
+	IDXD_CMDSTS_HW_ERR,
+	/* enable device errors */
+	IDXD_CMDSTS_ERR_DEV_ENABLED = 0x10,
+	IDXD_CMDSTS_ERR_CONFIG,
+	IDXD_CMDSTS_ERR_BUSMASTER_EN,
+	IDXD_CMDSTS_ERR_PASID_INVAL,
+	IDXD_CMDSTS_ERR_WQ_SIZE_ERANGE,
+	IDXD_CMDSTS_ERR_GRP_CONFIG,
+	IDXD_CMDSTS_ERR_GRP_CONFIG2,
+	IDXD_CMDSTS_ERR_GRP_CONFIG3,
+	IDXD_CMDSTS_ERR_GRP_CONFIG4,
+	/* enable wq errors */
+	IDXD_CMDSTS_ERR_DEV_NOTEN = 0x20,
+	IDXD_CMDSTS_ERR_WQ_ENABLED,
+	IDXD_CMDSTS_ERR_WQ_SIZE,
+	IDXD_CMDSTS_ERR_WQ_PRIOR,
+	IDXD_CMDSTS_ERR_WQ_MODE,
+	IDXD_CMDSTS_ERR_BOF_EN,
+	IDXD_CMDSTS_ERR_PASID_EN,
+	IDXD_CMDSTS_ERR_MAX_BATCH_SIZE,
+	IDXD_CMDSTS_ERR_MAX_XFER_SIZE,
+	/* disable device errors */
+	IDXD_CMDSTS_ERR_DIS_DEV_EN = 0x31,
+	/* disable WQ, drain WQ, abort WQ, reset WQ */
+	IDXD_CMDSTS_ERR_DEV_NOT_EN,
+	/* request interrupt handle */
+	IDXD_CMDSTS_ERR_INVAL_INT_IDX = 0x41,
+	IDXD_CMDSTS_ERR_NO_HANDLE,
+};
+
+#define IDXD_SWERR_OFFSET		0xc0
+#define IDXD_SWERR_VALID		0x00000001
+#define IDXD_SWERR_OVERFLOW		0x00000002
+#define IDXD_SWERR_ACK			(IDXD_SWERR_VALID | IDXD_SWERR_OVERFLOW)
+union sw_err_reg {
+	struct {
+		u64 valid:1;
+		u64 overflow:1;
+		u64 desc_valid:1;
+		u64 wq_idx_valid:1;
+		u64 batch:1;
+		u64 fault_rw:1;
+		u64 priv:1;
+		u64 rsvd:1;
+		u64 error:8;
+		u64 wq_idx:8;
+		u64 rsvd2:8;
+		u64 operation:8;
+		u64 pasid:20;
+		u64 rsvd3:4;
+
+		u64 batch_idx:16;
+		u64 rsvd4:16;
+		u64 invalid_flags:32;
+
+		u64 fault_addr;
+
+		u64 rsvd5;
+	};
+	u64 bits[4];
+} __packed;
+
+union msix_perm {
+	struct {
+		u32 rsvd:2;
+		u32 ignore:1;
+		u32 pasid_en:1;
+		u32 rsvd2:8;
+		u32 pasid:20;
+	};
+	u32 bits;
+} __packed;
+
+union group_flags {
+	struct {
+		u32 tc_a:3;
+		u32 tc_b:3;
+		u32 rsvd:1;
+		u32 use_token_limit:1;
+		u32 tokens_reserved:8;
+		u32 rsvd2:4;
+		u32 tokens_allowed:8;
+		u32 rsvd3:4;
+	};
+	u32 bits;
+} __packed;
+
+struct grpcfg {
+	u64 wqs[4];
+	u64 engines;
+	union group_flags flags;
+} __packed;
+
+union wqcfg {
+	struct {
+		/* bytes 0-3 */
+		u16 wq_size;
+		u16 rsvd;
+
+		/* bytes 4-7 */
+		u16 wq_thresh;
+		u16 rsvd1;
+
+		/* bytes 8-11 */
+		u32 mode:1;	/* shared or dedicated */
+		u32 bof:1;	/* block on fault */
+		u32 rsvd2:2;
+		u32 priority:4;
+		u32 pasid:20;
+		u32 pasid_en:1;
+		u32 priv:1;
+		u32 rsvd3:2;
+
+		/* bytes 12-15 */
+		u32 max_xfer_shift:5;
+		u32 max_batch_shift:4;
+		u32 rsvd4:23;
+
+		/* bytes 16-19 */
+		u16 occupancy_inth;
+		u16 occupancy_table_sel:1;
+		u16 rsvd5:15;
+
+		/* bytes 20-23 */
+		u16 occupancy_limit;
+		u16 occupancy_int_en:1;
+		u16 rsvd6:15;
+
+		/* bytes 24-27 */
+		u16 occupancy;
+		u16 occupancy_int:1;
+		u16 rsvd7:12;
+		u16 mode_support:1;
+		u16 wq_state:2;
+
+		/* bytes 28-31 */
+		u32 rsvd8;
+	};
+	u32 bits[8];
+} __packed;
+#endif