[linux-2.6-block.git] / drivers / block / mtip32xx / mtip32xx.h

/*
 * mtip32xx.h - Header file for the P320 SSD Block Driver
 *   Copyright (C) 2011 Micron Technology, Inc.
 *
 * Portions of this code were derived from works subjected to the
 * following copyright:
 *    Copyright (C) 2009 Integrated Device Technology, Inc.
 *
 * 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.
 *
 */

#ifndef __MTIP32XX_H__
#define __MTIP32XX_H__

#include <linux/spinlock.h>
#include <linux/rwsem.h>
#include <linux/ata.h>
#include <linux/interrupt.h>
#include <linux/genhd.h>

/* Offset of Subsystem Device ID in pci confoguration space */
#define PCI_SUBSYSTEM_DEVICEID	0x2E

/* offset of Device Control register in PCIe extended capabilites space */
#define PCIE_CONFIG_EXT_DEVICE_CONTROL_OFFSET	0x48

/* check for erase mode support during secure erase */
#define MTIP_SEC_ERASE_MODE     0x2

/* # of times to retry timed out/failed IOs */
#define MTIP_MAX_RETRIES	2

/* Various timeout values in ms */
#define MTIP_NCQ_CMD_TIMEOUT_MS      15000
#define MTIP_IOCTL_CMD_TIMEOUT_MS    5000
#define MTIP_INT_CMD_TIMEOUT_MS      5000
#define MTIP_QUIESCE_IO_TIMEOUT_MS   (MTIP_NCQ_CMD_TIMEOUT_MS * \
				     (MTIP_MAX_RETRIES + 1))

/* check for timeouts every 500ms */
#define MTIP_TIMEOUT_CHECK_PERIOD	500

/* ftl rebuild */
#define MTIP_FTL_REBUILD_OFFSET		142
#define MTIP_FTL_REBUILD_MAGIC		0xED51
#define MTIP_FTL_REBUILD_TIMEOUT_MS	2400000

/* unaligned IO handling */
#define MTIP_MAX_UNALIGNED_SLOTS	2

/* Macro to extract the tag bit number from a tag value. */
#define MTIP_TAG_BIT(tag)	(tag & 0x1F)

/*
 * Macro to extract the tag index from a tag value. The index
 * is used to access the correct s_active/Command Issue register based
 * on the tag value.
 */
#define MTIP_TAG_INDEX(tag)	(tag >> 5)

/*
 * Maximum number of scatter gather entries
 * a single command may have.
 */
#define MTIP_MAX_SG		504

/*
 * Maximum number of slot groups (Command Issue & s_active registers)
 * NOTE: This is the driver maximum; check dd->slot_groups for actual value.
 */
#define MTIP_MAX_SLOT_GROUPS	8

/* Internal command tag. */
#define MTIP_TAG_INTERNAL	0

/* Micron Vendor ID & P320x SSD Device ID */
#define PCI_VENDOR_ID_MICRON    0x1344
#define P320H_DEVICE_ID		0x5150
#define P320M_DEVICE_ID		0x5151
#define P320S_DEVICE_ID		0x5152
#define P325M_DEVICE_ID		0x5153
#define P420H_DEVICE_ID		0x5160
#define P420M_DEVICE_ID		0x5161
#define P425M_DEVICE_ID		0x5163

/* Driver name and version strings */
#define MTIP_DRV_NAME		"mtip32xx"
#define MTIP_DRV_VERSION	"1.3.1"

/* Maximum number of minor device numbers per device. */
#define MTIP_MAX_MINORS		16

/* Maximum number of supported command slots. */
#define MTIP_MAX_COMMAND_SLOTS	(MTIP_MAX_SLOT_GROUPS * 32)

/*
 * Per-tag bitfield size in longs.
 * Linux bit manipulation functions
 * (i.e. test_and_set_bit, find_next_zero_bit)
 * manipulate memory in longs, so we try to make the math work.
 * take the slot groups and find the number of longs, rounding up.
 * Careful! i386 and x86_64 use different size longs!
 */
#define U32_PER_LONG	(sizeof(long) / sizeof(u32))
#define SLOTBITS_IN_LONGS ((MTIP_MAX_SLOT_GROUPS + \
					(U32_PER_LONG-1))/U32_PER_LONG)

/* BAR number used to access the HBA registers. */
#define MTIP_ABAR		5

#ifdef DEBUG
 #define dbg_printk(format, arg...)	\
	printk(pr_fmt(format), ##arg);
#else
 #define dbg_printk(format, arg...)
#endif

#define MTIP_DFS_MAX_BUF_SIZE 1024

#define __force_bit2int (unsigned int __force)

enum {
	/* below are bit numbers in 'flags' defined in mtip_port */
	MTIP_PF_IC_ACTIVE_BIT       = 0, /* pio/ioctl */
	MTIP_PF_EH_ACTIVE_BIT       = 1, /* error handling */
	MTIP_PF_SE_ACTIVE_BIT       = 2, /* secure erase */
	MTIP_PF_DM_ACTIVE_BIT       = 3, /* download microcde */
	MTIP_PF_PAUSE_IO      =	((1 << MTIP_PF_IC_ACTIVE_BIT) |
				(1 << MTIP_PF_EH_ACTIVE_BIT) |
				(1 << MTIP_PF_SE_ACTIVE_BIT) |
				(1 << MTIP_PF_DM_ACTIVE_BIT)),

	MTIP_PF_SVC_THD_ACTIVE_BIT  = 4,
	MTIP_PF_ISSUE_CMDS_BIT      = 5,
	MTIP_PF_REBUILD_BIT         = 6,
	MTIP_PF_SVC_THD_STOP_BIT    = 8,

	/* below are bit numbers in 'dd_flag' defined in driver_data */
	MTIP_DDF_SEC_LOCK_BIT	    = 0,
	MTIP_DDF_REMOVE_PENDING_BIT = 1,
	MTIP_DDF_OVER_TEMP_BIT      = 2,
	MTIP_DDF_WRITE_PROTECT_BIT  = 3,
	MTIP_DDF_CLEANUP_BIT        = 5,
	MTIP_DDF_RESUME_BIT         = 6,
	MTIP_DDF_INIT_DONE_BIT      = 7,
	MTIP_DDF_REBUILD_FAILED_BIT = 8,

	MTIP_DDF_STOP_IO      = ((1 << MTIP_DDF_REMOVE_PENDING_BIT) |
				(1 << MTIP_DDF_SEC_LOCK_BIT) |
				(1 << MTIP_DDF_OVER_TEMP_BIT) |
				(1 << MTIP_DDF_WRITE_PROTECT_BIT) |
				(1 << MTIP_DDF_REBUILD_FAILED_BIT)),

};

struct smart_attr {
	u8 attr_id;
	u16 flags;
	u8 cur;
	u8 worst;
	u32 data;
	u8 res[3];
} __packed;

struct mtip_work {
	struct work_struct work;
	void *port;
	int cpu_binding;
	u32 completed;
} ____cacheline_aligned_in_smp;

#define DEFINE_HANDLER(group)                                  \
	void mtip_workq_sdbf##group(struct work_struct *work)       \
	{                                                      \
		struct mtip_work *w = (struct mtip_work *) work;         \
		mtip_workq_sdbfx(w->port, group, w->completed);     \
	}

#define MTIP_TRIM_TIMEOUT_MS		240000
#define MTIP_MAX_TRIM_ENTRIES		8
#define MTIP_MAX_TRIM_ENTRY_LEN		0xfff8

struct mtip_trim_entry {
	u32 lba;   /* starting lba of region */
	u16 rsvd;  /* unused */
	u16 range; /* # of 512b blocks to trim */
} __packed;

struct mtip_trim {
	/* Array of regions to trim */
	struct mtip_trim_entry entry[MTIP_MAX_TRIM_ENTRIES];
} __packed;

/* Register Frame Information Structure (FIS), host to device. */
struct host_to_dev_fis {
	/*
	 * FIS type.
	 * - 27h Register FIS, host to device.
	 * - 34h Register FIS, device to host.
	 * - 39h DMA Activate FIS, device to host.
	 * - 41h DMA Setup FIS, bi-directional.
	 * - 46h Data FIS, bi-directional.
	 * - 58h BIST Activate FIS, bi-directional.
	 * - 5Fh PIO Setup FIS, device to host.
	 * - A1h Set Device Bits FIS, device to host.
	 */
	unsigned char type;
	unsigned char opts;
	unsigned char command;
	unsigned char features;

	union {
		unsigned char lba_low;
		unsigned char sector;
	};
	union {
		unsigned char lba_mid;
		unsigned char cyl_low;
	};
	union {
		unsigned char lba_hi;
		unsigned char cyl_hi;
	};
	union {
		unsigned char device;
		unsigned char head;
	};

	union {
		unsigned char lba_low_ex;
		unsigned char sector_ex;
	};
	union {
		unsigned char lba_mid_ex;
		unsigned char cyl_low_ex;
	};
	union {
		unsigned char lba_hi_ex;
		unsigned char cyl_hi_ex;
	};
	unsigned char features_ex;

	unsigned char sect_count;
	unsigned char sect_cnt_ex;
	unsigned char res2;
	unsigned char control;

	unsigned int res3;
};

/* Command header structure. */
struct mtip_cmd_hdr {
	/*
	 * Command options.
	 * - Bits 31:16 Number of PRD entries.
	 * - Bits 15:8 Unused in this implementation.
	 * - Bit 7 Prefetch bit, informs the drive to prefetch PRD entries.
	 * - Bit 6 Write bit, should be set when writing data to the device.
	 * - Bit 5 Unused in this implementation.
	 * - Bits 4:0 Length of the command FIS in DWords (DWord = 4 bytes).
	 */
	unsigned int opts;
	/* This field is unsed when using NCQ. */
	union {
		unsigned int byte_count;
		unsigned int status;
	};
	/*
	 * Lower 32 bits of the command table address associated with this
	 * header. The command table addresses must be 128 byte aligned.
	 */
	unsigned int ctba;
	/*
	 * If 64 bit addressing is used this field is the upper 32 bits
	 * of the command table address associated with this command.
	 */
	unsigned int ctbau;
	/* Reserved and unused. */
	unsigned int res[4];
};

/* Command scatter gather structure (PRD). */
struct mtip_cmd_sg {
	/*
	 * Low 32 bits of the data buffer address. For P320 this
	 * address must be 8 byte aligned signified by bits 2:0 being
	 * set to 0.
	 */
	unsigned int dba;
	/*
	 * When 64 bit addressing is used this field is the upper
	 * 32 bits of the data buffer address.
	 */
	unsigned int dba_upper;
	/* Unused. */
	unsigned int reserved;
	/*
	 * Bit 31: interrupt when this data block has been transferred.
	 * Bits 30..22: reserved
	 * Bits 21..0: byte count (minus 1).  For P320 the byte count must be
	 * 8 byte aligned signified by bits 2:0 being set to 1.
	 */
	unsigned int info;
};
struct mtip_port;

/* Structure used to describe a command. */
struct mtip_cmd {

	struct mtip_cmd_hdr *command_header; /* ptr to command header entry */

	dma_addr_t command_header_dma; /* corresponding physical address */

	void *command; /* ptr to command table entry */

	dma_addr_t command_dma; /* corresponding physical address */

	void *comp_data; /* data passed to completion function comp_func() */
	/*
	 * Completion function called by the ISR upon completion of
	 * a command.
	 */
	void (*comp_func)(struct mtip_port *port,
				int tag,
				struct mtip_cmd *cmd,
				int status);

	int scatter_ents; /* Number of scatter list entries used */

	int unaligned; /* command is unaligned on 4k boundary */

	struct scatterlist sg[MTIP_MAX_SG]; /* Scatter list entries */

	int retries; /* The number of retries left for this command. */

	int direction; /* Data transfer direction */
};

/* Structure used to describe a port. */
struct mtip_port {
	/* Pointer back to the driver data for this port. */
	struct driver_data *dd;
	/*
	 * Used to determine if the data pointed to by the
	 * identify field is valid.
	 */
	unsigned long identify_valid;
	/* Base address of the memory mapped IO for the port. */
	void __iomem *mmio;
	/* Array of pointers to the memory mapped s_active registers. */
	void __iomem *s_active[MTIP_MAX_SLOT_GROUPS];
	/* Array of pointers to the memory mapped completed registers. */
	void __iomem *completed[MTIP_MAX_SLOT_GROUPS];
	/* Array of pointers to the memory mapped Command Issue registers. */
	void __iomem *cmd_issue[MTIP_MAX_SLOT_GROUPS];
	/*
	 * Pointer to the beginning of the command header memory as used
	 * by the driver.
	 */
	void *command_list;
	/*
	 * Pointer to the beginning of the command header memory as used
	 * by the DMA.
	 */
	dma_addr_t command_list_dma;
	/*
	 * Pointer to the beginning of the RX FIS memory as used
	 * by the driver.
	 */
	void *rxfis;
	/*
	 * Pointer to the beginning of the RX FIS memory as used
	 * by the DMA.
	 */
	dma_addr_t rxfis_dma;
	/*
	 * Pointer to the DMA region for RX Fis, Identify, RLE10, and SMART
	 */
	void *block1;
	/*
	 * DMA address of region for RX Fis, Identify, RLE10, and SMART
	 */
	dma_addr_t block1_dma;
	/*
	 * Pointer to the beginning of the identify data memory as used
	 * by the driver.
	 */
	u16 *identify;
	/*
	 * Pointer to the beginning of the identify data memory as used
	 * by the DMA.
	 */
	dma_addr_t identify_dma;
	/*
	 * Pointer to the beginning of a sector buffer that is used
	 * by the driver when issuing internal commands.
	 */
	u16 *sector_buffer;
	/*
	 * Pointer to the beginning of a sector buffer that is used
	 * by the DMA when the driver issues internal commands.
	 */
	dma_addr_t sector_buffer_dma;

	u16 *log_buf;
	dma_addr_t log_buf_dma;

	u8 *smart_buf;
	dma_addr_t smart_buf_dma;

	/*
	 * used to queue commands when an internal command is in progress
	 * or error handling is active
	 */
	unsigned long cmds_to_issue[SLOTBITS_IN_LONGS];
	/* Used by mtip_service_thread to wait for an event */
	wait_queue_head_t svc_wait;
	/*
	 * indicates the state of the port. Also, helps the service thread
	 * to determine its action on wake up.
	 */
	unsigned long flags;
	/*
	 * Timer used to complete commands that have been active for too long.
	 */
	unsigned long ic_pause_timer;

	/* Semaphore to control queue depth of unaligned IOs */
	struct semaphore cmd_slot_unal;

	/* Spinlock for working around command-issue bug. */
	spinlock_t cmd_issue_lock[MTIP_MAX_SLOT_GROUPS];
};

/*
 * Driver private data structure.
 *
 * One structure is allocated per probed device.
 */
struct driver_data {
	void __iomem *mmio; /* Base address of the HBA registers. */

	int major; /* Major device number. */

	int instance; /* Instance number. First device probed is 0, ... */

	struct gendisk *disk; /* Pointer to our gendisk structure. */

	struct pci_dev *pdev; /* Pointer to the PCI device structure. */

	struct request_queue *queue; /* Our request queue. */

	struct blk_mq_tag_set tags; /* blk_mq tags */

	struct mtip_port *port; /* Pointer to the port data structure. */

	unsigned product_type; /* magic value declaring the product type */

	unsigned slot_groups; /* number of slot groups the product supports */

	unsigned long index; /* Index to determine the disk name */

	unsigned long dd_flag; /* NOTE: use atomic bit operations on this */

	struct task_struct *mtip_svc_handler; /* task_struct of svc thd */

	struct dentry *dfs_node;

	bool trim_supp; /* flag indicating trim support */

	bool sr;

	int numa_node; /* NUMA support */

	char workq_name[32];

	struct workqueue_struct *isr_workq;

	atomic_t irq_workers_active;

	struct mtip_work work[MTIP_MAX_SLOT_GROUPS];

	int isr_binding;

	struct block_device *bdev;

	struct list_head online_list; /* linkage for online list */

	struct list_head remove_list; /* linkage for removing list */

	int unal_qdepth; /* qdepth of unaligned IO queue */
};

#endif
Commit	Line	Data
88523a61 SB	1	/*
	2	* mtip32xx.h - Header file for the P320 SSD Block Driver
	3	* Copyright (C) 2011 Micron Technology, Inc.
	4	*
	5	* Portions of this code were derived from works subjected to the
	6	* following copyright:
	7	* Copyright (C) 2009 Integrated Device Technology, Inc.
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	*/
	20
	21	#ifndef __MTIP32XX_H__
	22	#define __MTIP32XX_H__
	23
	24	#include <linux/spinlock.h>
	25	#include <linux/rwsem.h>
	26	#include <linux/ata.h>
	27	#include <linux/interrupt.h>
	28	#include <linux/genhd.h>
88523a61 SB	29
	30	/* Offset of Subsystem Device ID in pci confoguration space */
	31	#define PCI_SUBSYSTEM_DEVICEID 0x2E
	32
	33	/* offset of Device Control register in PCIe extended capabilites space */
	34	#define PCIE_CONFIG_EXT_DEVICE_CONTROL_OFFSET 0x48
	35
4453bc88	36	/* check for erase mode support during secure erase */
4b9e8845	37	#define MTIP_SEC_ERASE_MODE 0x2
4453bc88	38
c74b0f58 AT	39	/* # of times to retry timed out/failed IOs */
c74b0f58 AT	40	#define MTIP_MAX_RETRIES 2
88523a61 SB	41
88523a61 SB	42	/* Various timeout values in ms */
9b204fbf AT	43	#define MTIP_NCQ_CMD_TIMEOUT_MS 15000
	44	#define MTIP_IOCTL_CMD_TIMEOUT_MS 5000
	45	#define MTIP_INT_CMD_TIMEOUT_MS 5000
	46	#define MTIP_QUIESCE_IO_TIMEOUT_MS (MTIP_NCQ_CMD_TIMEOUT_MS * \
	47	(MTIP_MAX_RETRIES + 1))
88523a61 SB	48
	49	/* check for timeouts every 500ms */
	50	#define MTIP_TIMEOUT_CHECK_PERIOD 500
	51
	52	/* ftl rebuild */
	53	#define MTIP_FTL_REBUILD_OFFSET 142
60ec0eec	54	#define MTIP_FTL_REBUILD_MAGIC 0xED51
88523a61 SB	55	#define MTIP_FTL_REBUILD_TIMEOUT_MS 2400000
88523a61 SB	56
2077d947	57	/* unaligned IO handling */
5a98268e	58	#define MTIP_MAX_UNALIGNED_SLOTS 2
2077d947	59
88523a61	60	/* Macro to extract the tag bit number from a tag value. */
60ec0eec	61	#define MTIP_TAG_BIT(tag) (tag & 0x1F)
88523a61 SB	62
	63	/*
	64	* Macro to extract the tag index from a tag value. The index
	65	* is used to access the correct s_active/Command Issue register based
	66	* on the tag value.
	67	*/
	68	#define MTIP_TAG_INDEX(tag) (tag >> 5)
	69
	70	/*
	71	* Maximum number of scatter gather entries
	72	* a single command may have.
	73	*/
188b9f49	74	#define MTIP_MAX_SG 504
88523a61 SB	75
	76	/*
	77	* Maximum number of slot groups (Command Issue & s_active registers)
	78	* NOTE: This is the driver maximum; check dd->slot_groups for actual value.
	79	*/
	80	#define MTIP_MAX_SLOT_GROUPS 8
	81
	82	/* Internal command tag. */
	83	#define MTIP_TAG_INTERNAL 0
	84
	85	/* Micron Vendor ID & P320x SSD Device ID */
	86	#define PCI_VENDOR_ID_MICRON 0x1344
1a131458 AT	87	#define P320H_DEVICE_ID 0x5150
	88	#define P320M_DEVICE_ID 0x5151
	89	#define P320S_DEVICE_ID 0x5152
	90	#define P325M_DEVICE_ID 0x5153
	91	#define P420H_DEVICE_ID 0x5160
	92	#define P420M_DEVICE_ID 0x5161
	93	#define P425M_DEVICE_ID 0x5163
88523a61 SB	94
	95	/* Driver name and version strings */
	96	#define MTIP_DRV_NAME "mtip32xx"
5eb9291c	97	#define MTIP_DRV_VERSION "1.3.1"
88523a61 SB	98
	99	/* Maximum number of minor device numbers per device. */
	100	#define MTIP_MAX_MINORS 16
	101
	102	/* Maximum number of supported command slots. */
	103	#define MTIP_MAX_COMMAND_SLOTS (MTIP_MAX_SLOT_GROUPS * 32)
	104
	105	/*
	106	* Per-tag bitfield size in longs.
	107	* Linux bit manipulation functions
	108	* (i.e. test_and_set_bit, find_next_zero_bit)
	109	* manipulate memory in longs, so we try to make the math work.
	110	* take the slot groups and find the number of longs, rounding up.
	111	* Careful! i386 and x86_64 use different size longs!
	112	*/
	113	#define U32_PER_LONG (sizeof(long) / sizeof(u32))
	114	#define SLOTBITS_IN_LONGS ((MTIP_MAX_SLOT_GROUPS + \
	115	(U32_PER_LONG-1))/U32_PER_LONG)
	116
	117	/* BAR number used to access the HBA registers. */
	118	#define MTIP_ABAR 5
	119
88523a61 SB	120	#ifdef DEBUG
	121	#define dbg_printk(format, arg...) \
	122	printk(pr_fmt(format), ##arg);
	123	#else
	124	#define dbg_printk(format, arg...)
	125	#endif
	126
7b421d24 AT	127	#define MTIP_DFS_MAX_BUF_SIZE 1024
7b421d24 AT	128
60ec0eec AT	129	#define __force_bit2int (unsigned int __force)
60ec0eec AT	130
8ce80093 AT	131	enum {
	132	/* below are bit numbers in 'flags' defined in mtip_port */
	133	MTIP_PF_IC_ACTIVE_BIT = 0, /* pio/ioctl */
	134	MTIP_PF_EH_ACTIVE_BIT = 1, /* error handling */
	135	MTIP_PF_SE_ACTIVE_BIT = 2, /* secure erase */
	136	MTIP_PF_DM_ACTIVE_BIT = 3, /* download microcde */
0caff003 AT	137	MTIP_PF_PAUSE_IO = ((1 << MTIP_PF_IC_ACTIVE_BIT) \|
	138	(1 << MTIP_PF_EH_ACTIVE_BIT) \|
	139	(1 << MTIP_PF_SE_ACTIVE_BIT) \|
8ce80093 AT	140	(1 << MTIP_PF_DM_ACTIVE_BIT)),
	141
	142	MTIP_PF_SVC_THD_ACTIVE_BIT = 4,
	143	MTIP_PF_ISSUE_CMDS_BIT = 5,
	144	MTIP_PF_REBUILD_BIT = 6,
	145	MTIP_PF_SVC_THD_STOP_BIT = 8,
	146
	147	/* below are bit numbers in 'dd_flag' defined in driver_data */
12a166c9	148	MTIP_DDF_SEC_LOCK_BIT = 0,
8ce80093 AT	149	MTIP_DDF_REMOVE_PENDING_BIT = 1,
	150	MTIP_DDF_OVER_TEMP_BIT = 2,
	151	MTIP_DDF_WRITE_PROTECT_BIT = 3,
8ce80093 AT	152	MTIP_DDF_CLEANUP_BIT = 5,
	153	MTIP_DDF_RESUME_BIT = 6,
	154	MTIP_DDF_INIT_DONE_BIT = 7,
	155	MTIP_DDF_REBUILD_FAILED_BIT = 8,
8f8b8995 AT	156
	157	MTIP_DDF_STOP_IO = ((1 << MTIP_DDF_REMOVE_PENDING_BIT) \|
	158	(1 << MTIP_DDF_SEC_LOCK_BIT) \|
	159	(1 << MTIP_DDF_OVER_TEMP_BIT) \|
	160	(1 << MTIP_DDF_WRITE_PROTECT_BIT) \|
	161	(1 << MTIP_DDF_REBUILD_FAILED_BIT)),
	162
8ce80093	163	};
f6587217	164
836413e8	165	struct smart_attr {
f6587217 AT	166	u8 attr_id;
	167	u16 flags;
	168	u8 cur;
	169	u8 worst;
	170	u32 data;
	171	u8 res[3];
836413e8	172	} __packed;
f6587217	173
16c906e5 AT	174	struct mtip_work {
	175	struct work_struct work;
	176	void *port;
	177	int cpu_binding;
	178	u32 completed;
	179	} ____cacheline_aligned_in_smp;
	180
	181	#define DEFINE_HANDLER(group) \
	182	void mtip_workq_sdbf##group(struct work_struct *work) \
	183	{ \
	184	struct mtip_work w = (struct mtip_work ) work; \
	185	mtip_workq_sdbfx(w->port, group, w->completed); \
	186	}
	187
15283469 AT	188	#define MTIP_TRIM_TIMEOUT_MS 240000
15283469 AT	189	#define MTIP_MAX_TRIM_ENTRIES 8
0caff003	190	#define MTIP_MAX_TRIM_ENTRY_LEN 0xfff8
15283469 AT	191
	192	struct mtip_trim_entry {
	193	u32 lba; /* starting lba of region */
	194	u16 rsvd; /* unused */
	195	u16 range; /* # of 512b blocks to trim */
	196	} __packed;
	197
	198	struct mtip_trim {
	199	/* Array of regions to trim */
	200	struct mtip_trim_entry entry[MTIP_MAX_TRIM_ENTRIES];
	201	} __packed;
	202
88523a61 SB	203	/* Register Frame Information Structure (FIS), host to device. */
	204	struct host_to_dev_fis {
	205	/*
	206	* FIS type.
	207	* - 27h Register FIS, host to device.
	208	* - 34h Register FIS, device to host.
	209	* - 39h DMA Activate FIS, device to host.
	210	* - 41h DMA Setup FIS, bi-directional.
	211	* - 46h Data FIS, bi-directional.
	212	* - 58h BIST Activate FIS, bi-directional.
	213	* - 5Fh PIO Setup FIS, device to host.
	214	* - A1h Set Device Bits FIS, device to host.
	215	*/
	216	unsigned char type;
	217	unsigned char opts;
	218	unsigned char command;
	219	unsigned char features;
	220
	221	union {
	222	unsigned char lba_low;
	223	unsigned char sector;
	224	};
	225	union {
	226	unsigned char lba_mid;
	227	unsigned char cyl_low;
	228	};
	229	union {
	230	unsigned char lba_hi;
	231	unsigned char cyl_hi;
	232	};
	233	union {
	234	unsigned char device;
	235	unsigned char head;
	236	};
	237
	238	union {
	239	unsigned char lba_low_ex;
	240	unsigned char sector_ex;
	241	};
	242	union {
	243	unsigned char lba_mid_ex;
	244	unsigned char cyl_low_ex;
	245	};
	246	union {
	247	unsigned char lba_hi_ex;
	248	unsigned char cyl_hi_ex;
	249	};
	250	unsigned char features_ex;
	251
	252	unsigned char sect_count;
	253	unsigned char sect_cnt_ex;
	254	unsigned char res2;
	255	unsigned char control;
	256
	257	unsigned int res3;
	258	};
	259
	260	/* Command header structure. */
	261	struct mtip_cmd_hdr {
	262	/*
	263	* Command options.
	264	* - Bits 31:16 Number of PRD entries.
	265	* - Bits 15:8 Unused in this implementation.
	266	* - Bit 7 Prefetch bit, informs the drive to prefetch PRD entries.
267	* - Bit 6 Write bit, should be set when writing data to the device.
268	* - Bit 5 Unused in this implementation.
269	* - Bits 4:0 Length of the command FIS in DWords (DWord = 4 bytes).
270	*/
271	unsigned int opts;
272	/* This field is unsed when using NCQ. */
273	union {
274	unsigned int byte_count;
275	unsigned int status;
276	};
277	/*
278	* Lower 32 bits of the command table address associated with this
279	* header. The command table addresses must be 128 byte aligned.
280	*/
281	unsigned int ctba;
282	/*
283	* If 64 bit addressing is used this field is the upper 32 bits
284	* of the command table address associated with this command.
285	*/
286	unsigned int ctbau;
287	/* Reserved and unused. */
288	unsigned int res[4];
289	};
290
291	/* Command scatter gather structure (PRD). */
292	struct mtip_cmd_sg {
293	/*
294	* Low 32 bits of the data buffer address. For P320 this
295	* address must be 8 byte aligned signified by bits 2:0 being
296	* set to 0.
297	*/
298	unsigned int dba;
299	/*
300	* When 64 bit addressing is used this field is the upper
301	* 32 bits of the data buffer address.
302	*/
303	unsigned int dba_upper;
304	/* Unused. */
305	unsigned int reserved;
306	/*
307	* Bit 31: interrupt when this data block has been transferred.
308	* Bits 30..22: reserved
309	* Bits 21..0: byte count (minus 1). For P320 the byte count must be
310	* 8 byte aligned signified by bits 2:0 being set to 1.
311	*/
312	unsigned int info;
313	};
314	struct mtip_port;
315
316	/* Structure used to describe a command. */
317	struct mtip_cmd {
318
319	struct mtip_cmd_hdr command_header; / ptr to command header entry */
320
321	dma_addr_t command_header_dma; /* corresponding physical address */
322
323	void command; / ptr to command table entry */
324
325	dma_addr_t command_dma; /* corresponding physical address */
326
327	void comp_data; / data passed to completion function comp_func() */
328	/*
329	* Completion function called by the ISR upon completion of
330	* a command.
331	*/
332	void (comp_func)(struct mtip_port port,
333	int tag,
ffc771b3	334	struct mtip_cmd *cmd,
88523a61	335	int status);
88523a61 SB	336
	337	int scatter_ents; /* Number of scatter list entries used */
	338
2077d947 AT	339	int unaligned; /* command is unaligned on 4k boundary */
2077d947 AT	340
88523a61 SB	341	struct scatterlist sg[MTIP_MAX_SG]; /* Scatter list entries */
	342
	343	int retries; /* The number of retries left for this command. */
	344
	345	int direction; /* Data transfer direction */
88523a61 SB	346	};
	347
	348	/* Structure used to describe a port. */
	349	struct mtip_port {
	350	/* Pointer back to the driver data for this port. */
	351	struct driver_data *dd;
	352	/*
	353	* Used to determine if the data pointed to by the
	354	* identify field is valid.
	355	*/
	356	unsigned long identify_valid;
	357	/* Base address of the memory mapped IO for the port. */
	358	void __iomem *mmio;
	359	/* Array of pointers to the memory mapped s_active registers. */
	360	void __iomem *s_active[MTIP_MAX_SLOT_GROUPS];
60ec0eec	361	/* Array of pointers to the memory mapped completed registers. */
88523a61 SB	362	void __iomem *completed[MTIP_MAX_SLOT_GROUPS];
	363	/* Array of pointers to the memory mapped Command Issue registers. */
	364	void __iomem *cmd_issue[MTIP_MAX_SLOT_GROUPS];
	365	/*
	366	* Pointer to the beginning of the command header memory as used
	367	* by the driver.
	368	*/
	369	void *command_list;
	370	/*
	371	* Pointer to the beginning of the command header memory as used
	372	* by the DMA.
	373	*/
	374	dma_addr_t command_list_dma;
	375	/*
	376	* Pointer to the beginning of the RX FIS memory as used
	377	* by the driver.
	378	*/
	379	void *rxfis;
	380	/*
	381	* Pointer to the beginning of the RX FIS memory as used
	382	* by the DMA.
	383	*/
	384	dma_addr_t rxfis_dma;
	385	/*
188b9f49	386	* Pointer to the DMA region for RX Fis, Identify, RLE10, and SMART
88523a61	387	*/
188b9f49	388	void *block1;
88523a61	389	/*
188b9f49	390	* DMA address of region for RX Fis, Identify, RLE10, and SMART
88523a61	391	*/
188b9f49	392	dma_addr_t block1_dma;
88523a61 SB	393	/*
	394	* Pointer to the beginning of the identify data memory as used
	395	* by the driver.
	396	*/
	397	u16 *identify;
	398	/*
	399	* Pointer to the beginning of the identify data memory as used
	400	* by the DMA.
	401	*/
	402	dma_addr_t identify_dma;
	403	/*
	404	* Pointer to the beginning of a sector buffer that is used
	405	* by the driver when issuing internal commands.
	406	*/
	407	u16 *sector_buffer;
	408	/*
	409	* Pointer to the beginning of a sector buffer that is used
	410	* by the DMA when the driver issues internal commands.
	411	*/
	412	dma_addr_t sector_buffer_dma;
a7806fad	413
f6587217 AT	414	u16 *log_buf;
	415	dma_addr_t log_buf_dma;
	416
	417	u8 *smart_buf;
	418	dma_addr_t smart_buf_dma;
	419
60ec0eec AT	420	/*
	421	* used to queue commands when an internal command is in progress
	422	* or error handling is active
	423	*/
	424	unsigned long cmds_to_issue[SLOTBITS_IN_LONGS];
60ec0eec AT	425	/* Used by mtip_service_thread to wait for an event */
	426	wait_queue_head_t svc_wait;
	427	/*
	428	* indicates the state of the port. Also, helps the service thread
	429	* to determine its action on wake up.
	430	*/
	431	unsigned long flags;
88523a61 SB	432	/*
	433	* Timer used to complete commands that have been active for too long.
	434	*/
c74b0f58	435	unsigned long ic_pause_timer;
2077d947 AT	436
	437	/* Semaphore to control queue depth of unaligned IOs */
	438	struct semaphore cmd_slot_unal;
	439
88523a61	440	/* Spinlock for working around command-issue bug. */
16c906e5	441	spinlock_t cmd_issue_lock[MTIP_MAX_SLOT_GROUPS];
88523a61 SB	442	};
	443
	444	/*
	445	* Driver private data structure.
	446	*
	447	* One structure is allocated per probed device.
	448	*/
	449	struct driver_data {
	450	void __iomem mmio; / Base address of the HBA registers. */
	451
	452	int major; /* Major device number. */
	453
	454	int instance; /* Instance number. First device probed is 0, ... */
	455
88523a61 SB	456	struct gendisk disk; / Pointer to our gendisk structure. */
	457
	458	struct pci_dev pdev; / Pointer to the PCI device structure. */
	459
	460	struct request_queue queue; / Our request queue. */
88523a61	461
ffc771b3 JA	462	struct blk_mq_tag_set tags; /* blk_mq tags */
ffc771b3 JA	463
88523a61 SB	464	struct mtip_port port; / Pointer to the port data structure. */
88523a61 SB	465
88523a61 SB	466	unsigned product_type; /* magic value declaring the product type */
	467
	468	unsigned slot_groups; /* number of slot groups the product supports */
	469
88523a61 SB	470	unsigned long index; /* Index to determine the disk name */
88523a61 SB	471
45038367	472	unsigned long dd_flag; /* NOTE: use atomic bit operations on this */
88523a61	473
60ec0eec	474	struct task_struct mtip_svc_handler; / task_struct of svc thd */
7b421d24 AT	475
7b421d24 AT	476	struct dentry *dfs_node;
16c906e5	477
15283469 AT	478	bool trim_supp; /* flag indicating trim support */
15283469 AT	479
8f8b8995 AT	480	bool sr;
8f8b8995 AT	481
16c906e5 AT	482	int numa_node; /* NUMA support */
	483
	484	char workq_name[32];
	485
	486	struct workqueue_struct *isr_workq;
	487
16c906e5 AT	488	atomic_t irq_workers_active;
16c906e5 AT	489
f45c40a9 SB	490	struct mtip_work work[MTIP_MAX_SLOT_GROUPS];
f45c40a9 SB	491
16c906e5	492	int isr_binding;
0caff003	493
8f8b8995 AT	494	struct block_device *bdev;
8f8b8995 AT	495
0caff003 AT	496	struct list_head online_list; /* linkage for online list */
	497
	498	struct list_head remove_list; /* linkage for removing list */
f45c40a9 SB	499
f45c40a9 SB	500	int unal_qdepth; /* qdepth of unaligned IO queue */
88523a61 SB	501	};
88523a61 SB	502
88523a61	503	#endif