linux/drivers/dma/ioat/hw.h

/*
 * Copyright(c) 2004 - 2009 Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * The full GNU General Public License is included in this distribution in the
 * file called COPYING.
 */
#ifndef _IOAT_HW_H_
#define _IOAT_HW_H_

/* PCI Configuration Space Values */
#define IOAT_MMIO_BAR		0

/* CB device ID's */
#define PCI_DEVICE_ID_INTEL_IOAT_IVB0	0x0e20
#define PCI_DEVICE_ID_INTEL_IOAT_IVB1	0x0e21
#define PCI_DEVICE_ID_INTEL_IOAT_IVB2	0x0e22
#define PCI_DEVICE_ID_INTEL_IOAT_IVB3	0x0e23
#define PCI_DEVICE_ID_INTEL_IOAT_IVB4	0x0e24
#define PCI_DEVICE_ID_INTEL_IOAT_IVB5	0x0e25
#define PCI_DEVICE_ID_INTEL_IOAT_IVB6	0x0e26
#define PCI_DEVICE_ID_INTEL_IOAT_IVB7	0x0e27
#define PCI_DEVICE_ID_INTEL_IOAT_IVB8	0x0e2e
#define PCI_DEVICE_ID_INTEL_IOAT_IVB9	0x0e2f

#define PCI_DEVICE_ID_INTEL_IOAT_HSW0	0x2f20
#define PCI_DEVICE_ID_INTEL_IOAT_HSW1	0x2f21
#define PCI_DEVICE_ID_INTEL_IOAT_HSW2	0x2f22
#define PCI_DEVICE_ID_INTEL_IOAT_HSW3	0x2f23
#define PCI_DEVICE_ID_INTEL_IOAT_HSW4	0x2f24
#define PCI_DEVICE_ID_INTEL_IOAT_HSW5	0x2f25
#define PCI_DEVICE_ID_INTEL_IOAT_HSW6	0x2f26
#define PCI_DEVICE_ID_INTEL_IOAT_HSW7	0x2f27
#define PCI_DEVICE_ID_INTEL_IOAT_HSW8	0x2f2e
#define PCI_DEVICE_ID_INTEL_IOAT_HSW9	0x2f2f

#define PCI_DEVICE_ID_INTEL_IOAT_BWD0	0x0C50
#define PCI_DEVICE_ID_INTEL_IOAT_BWD1	0x0C51
#define PCI_DEVICE_ID_INTEL_IOAT_BWD2	0x0C52
#define PCI_DEVICE_ID_INTEL_IOAT_BWD3	0x0C53

#define PCI_DEVICE_ID_INTEL_IOAT_BDXDE0	0x6f50
#define PCI_DEVICE_ID_INTEL_IOAT_BDXDE1	0x6f51
#define PCI_DEVICE_ID_INTEL_IOAT_BDXDE2	0x6f52
#define PCI_DEVICE_ID_INTEL_IOAT_BDXDE3	0x6f53

#define PCI_DEVICE_ID_INTEL_IOAT_BDX0	0x6f20
#define PCI_DEVICE_ID_INTEL_IOAT_BDX1	0x6f21
#define PCI_DEVICE_ID_INTEL_IOAT_BDX2	0x6f22
#define PCI_DEVICE_ID_INTEL_IOAT_BDX3	0x6f23
#define PCI_DEVICE_ID_INTEL_IOAT_BDX4	0x6f24
#define PCI_DEVICE_ID_INTEL_IOAT_BDX5	0x6f25
#define PCI_DEVICE_ID_INTEL_IOAT_BDX6	0x6f26
#define PCI_DEVICE_ID_INTEL_IOAT_BDX7	0x6f27
#define PCI_DEVICE_ID_INTEL_IOAT_BDX8	0x6f2e
#define PCI_DEVICE_ID_INTEL_IOAT_BDX9	0x6f2f

#define IOAT_VER_1_2            0x12    /* Version 1.2 */
#define IOAT_VER_2_0            0x20    /* Version 2.0 */
#define IOAT_VER_3_0            0x30    /* Version 3.0 */
#define IOAT_VER_3_2            0x32    /* Version 3.2 */
#define IOAT_VER_3_3            0x33    /* Version 3.3 */


int system_has_dca_enabled(struct pci_dev *pdev);

#define IOAT_DESC_SZ	64

struct ioat_dma_descriptor {
	uint32_t	size;
	union {
		uint32_t ctl;
		struct {
			unsigned int int_en:1;
			unsigned int src_snoop_dis:1;
			unsigned int dest_snoop_dis:1;
			unsigned int compl_write:1;
			unsigned int fence:1;
			unsigned int null:1;
			unsigned int src_brk:1;
			unsigned int dest_brk:1;
			unsigned int bundle:1;
			unsigned int dest_dca:1;
			unsigned int hint:1;
			unsigned int rsvd2:13;
			#define IOAT_OP_COPY 0x00
			unsigned int op:8;
		} ctl_f;
	};
	uint64_t	src_addr;
	uint64_t	dst_addr;
	uint64_t	next;
	uint64_t	rsv1;
	uint64_t	rsv2;
	/* store some driver data in an unused portion of the descriptor */
	union {
		uint64_t	user1;
		uint64_t	tx_cnt;
	};
	uint64_t	user2;
};

struct ioat_xor_descriptor {
	uint32_t	size;
	union {
		uint32_t ctl;
		struct {
			unsigned int int_en:1;
			unsigned int src_snoop_dis:1;
			unsigned int dest_snoop_dis:1;
			unsigned int compl_write:1;
			unsigned int fence:1;
			unsigned int src_cnt:3;
			unsigned int bundle:1;
			unsigned int dest_dca:1;
			unsigned int hint:1;
			unsigned int rsvd:13;
			#define IOAT_OP_XOR 0x87
			#define IOAT_OP_XOR_VAL 0x88
			unsigned int op:8;
		} ctl_f;
	};
	uint64_t	src_addr;
	uint64_t	dst_addr;
	uint64_t	next;
	uint64_t	src_addr2;
	uint64_t	src_addr3;
	uint64_t	src_addr4;
	uint64_t	src_addr5;
};

struct ioat_xor_ext_descriptor {
	uint64_t	src_addr6;
	uint64_t	src_addr7;
	uint64_t	src_addr8;
	uint64_t	next;
	uint64_t	rsvd[4];
};

struct ioat_pq_descriptor {
	union {
		uint32_t	size;
		uint32_t	dwbes;
		struct {
			unsigned int rsvd:25;
			unsigned int p_val_err:1;
			unsigned int q_val_err:1;
			unsigned int rsvd1:4;
			unsigned int wbes:1;
		} dwbes_f;
	};
	union {
		uint32_t ctl;
		struct {
			unsigned int int_en:1;
			unsigned int src_snoop_dis:1;
			unsigned int dest_snoop_dis:1;
			unsigned int compl_write:1;
			unsigned int fence:1;
			unsigned int src_cnt:3;
			unsigned int bundle:1;
			unsigned int dest_dca:1;
			unsigned int hint:1;
			unsigned int p_disable:1;
			unsigned int q_disable:1;
			unsigned int rsvd2:2;
			unsigned int wb_en:1;
			unsigned int prl_en:1;
			unsigned int rsvd3:7;
			#define IOAT_OP_PQ 0x89
			#define IOAT_OP_PQ_VAL 0x8a
			#define IOAT_OP_PQ_16S 0xa0
			#define IOAT_OP_PQ_VAL_16S 0xa1
			unsigned int op:8;
		} ctl_f;
	};
	uint64_t	src_addr;
	uint64_t	p_addr;
	uint64_t	next;
	uint64_t	src_addr2;
	union {
		uint64_t	src_addr3;
		uint64_t	sed_addr;
	};
	uint8_t		coef[8];
	uint64_t	q_addr;
};

struct ioat_pq_ext_descriptor {
	uint64_t	src_addr4;
	uint64_t	src_addr5;
	uint64_t	src_addr6;
	uint64_t	next;
	uint64_t	src_addr7;
	uint64_t	src_addr8;
	uint64_t	rsvd[2];
};

struct ioat_pq_update_descriptor {
	uint32_t	size;
	union {
		uint32_t ctl;
		struct {
			unsigned int int_en:1;
			unsigned int src_snoop_dis:1;
			unsigned int dest_snoop_dis:1;
			unsigned int compl_write:1;
			unsigned int fence:1;
			unsigned int src_cnt:3;
			unsigned int bundle:1;
			unsigned int dest_dca:1;
			unsigned int hint:1;
			unsigned int p_disable:1;
			unsigned int q_disable:1;
			unsigned int rsvd:3;
			unsigned int coef:8;
			#define IOAT_OP_PQ_UP 0x8b
			unsigned int op:8;
		} ctl_f;
	};
	uint64_t	src_addr;
	uint64_t	p_addr;
	uint64_t	next;
	uint64_t	src_addr2;
	uint64_t	p_src;
	uint64_t	q_src;
	uint64_t	q_addr;
};

struct ioat_raw_descriptor {
	uint64_t	field[8];
};

struct ioat_pq16a_descriptor {
	uint8_t coef[8];
	uint64_t src_addr3;
	uint64_t src_addr4;
	uint64_t src_addr5;
	uint64_t src_addr6;
	uint64_t src_addr7;
	uint64_t src_addr8;
	uint64_t src_addr9;
};

struct ioat_pq16b_descriptor {
	uint64_t src_addr10;
	uint64_t src_addr11;
	uint64_t src_addr12;
	uint64_t src_addr13;
	uint64_t src_addr14;
	uint64_t src_addr15;
	uint64_t src_addr16;
	uint64_t rsvd;
};

union ioat_sed_pq_descriptor {
	struct ioat_pq16a_descriptor a;
	struct ioat_pq16b_descriptor b;
};

#define SED_SIZE	64

struct ioat_sed_raw_descriptor {
	uint64_t	a[8];
	uint64_t	b[8];
	uint64_t	c[8];
};

#endif