Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 467 insertions, 0 deletions

diff --git a/drivers/block/mtip32xx/mtip32xx.h b/drivers/block/mtip32xx/mtip32xx.h
new file mode 100644
index 0000000000..f7328f19ac
--- /dev/null
+++ b/drivers/block/mtip32xx/mtip32xx.h
@@ -0,0 +1,467 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * 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.
+ */
+
+#ifndef __MTIP32XX_H__
+#define __MTIP32XX_H__
+
+#include <linux/spinlock.h>
+#include <linux/rwsem.h>
+#include <linux/ata.h>
+#include <linux/interrupt.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
+
+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_TO_ACTIVE_BIT       = 9, /* timeout handling */
+	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) |
+				(1 << MTIP_PF_TO_ACTIVE_BIT)),
+	MTIP_PF_HOST_CAP_64         = 10, /* cache HOST_CAP_64 */
+
+	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,
+
+	MTIP_PF_SVC_THD_WORK	= ((1 << MTIP_PF_EH_ACTIVE_BIT) |
+				  (1 << MTIP_PF_ISSUE_CMDS_BIT) |
+				  (1 << MTIP_PF_REBUILD_BIT) |
+				  (1 << MTIP_PF_SVC_THD_STOP_BIT) |
+				  (1 << MTIP_PF_TO_ACTIVE_BIT)),
+
+	/* 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;
+	__le16 flags;
+	u8 cur;
+	u8 worst;
+	__le32 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);     \
+	}
+
+/* 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).
+	 */
+	__le32 opts;
+	/* This field is unsed when using NCQ. */
+	union {
+		__le32 byte_count;
+		__le32 status;
+	};
+	/*
+	 * Lower 32 bits of the command table address associated with this
+	 * header. The command table addresses must be 128 byte aligned.
+	 */
+	__le32 ctba;
+	/*
+	 * If 64 bit addressing is used this field is the upper 32 bits
+	 * of the command table address associated with this command.
+	 */
+	__le32 ctbau;
+	/* Reserved and unused. */
+	u32 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.
+	 */
+	__le32 dba;
+	/*
+	 * When 64 bit addressing is used this field is the upper
+	 * 32 bits of the data buffer address.
+	 */
+	__le32 dba_upper;
+	/* Unused. */
+	__le32 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.
+	 */
+	__le32 info;
+};
+struct mtip_port;
+
+struct mtip_int_cmd;
+
+/* Structure used to describe a command. */
+struct mtip_cmd {
+	void *command; /* ptr to command table entry */
+
+	dma_addr_t command_dma; /* corresponding physical address */
+
+	int scatter_ents; /* Number of scatter list entries used */
+
+	int unaligned; /* command is unaligned on 4k boundary */
+
+	union {
+		struct scatterlist sg[MTIP_MAX_SG]; /* Scatter list entries */
+		struct mtip_int_cmd *icmd;
+	};
+
+	int retries; /* The number of retries left for this command. */
+
+	int direction; /* Data transfer direction */
+	blk_status_t status;
+};
+
+/* 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;
+
+	/* Counter to control queue depth of unaligned IOs */
+	atomic_t 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 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;
+
+	int unal_qdepth; /* qdepth of unaligned IO queue */
+};
+
+#endif