mtip32xx: updates based on feedback (60ec0eec) · Commits · e / devices / android_kernel_oneplus_sm7250

drivers/block/mtip32xx/mtip32xx.c

+202 −140

Original line number	Diff line number	Diff line
		@@ -34,6 +34,7 @@
		#include <linux/bio.h>
		#include <linux/dma-mapping.h>
		#include <linux/idr.h>
		#include <linux/kthread.h>
		#include <../drivers/ata/ahci.h>
		#include "mtip32xx.h"

		@@ -99,15 +100,6 @@ struct mtip_compat_ide_task_request_s {
		};
		#endif

		static int mtip_exec_internal_command(struct mtip_port *port,
		void *fis,
		int fisLen,
		dma_addr_t buffer,
		int bufLen,
		u32 opts,
		gfp_t atomic,
		unsigned long timeout);

		/*
		* This function check_for_surprise_removal is called
		* while card is removed from the system and it will
		@@ -414,9 +406,9 @@ static void mtip_init_port(struct mtip_port *port)
		port->mmio + PORT_FIS_ADDR_HI);
		}

		writel(port->command_list_dma & 0xffffffff,
		writel(port->command_list_dma & 0xFFFFFFFF,
		port->mmio + PORT_LST_ADDR);
		writel(port->rxfis_dma & 0xffffffff, port->mmio + PORT_FIS_ADDR);
		writel(port->rxfis_dma & 0xFFFFFFFF, port->mmio + PORT_FIS_ADDR);

		/* Clear SError */
		writel(readl(port->mmio + PORT_SCR_ERR), port->mmio + PORT_SCR_ERR);
		@@ -541,7 +533,7 @@ static void mtip_timeout_function(unsigned long int data)
		if (atomic_read(&port->commands[tag].active) &&
		(time_after(jiffies, port->commands[tag].comp_time))) {
		group = tag >> 5;
		bit = tag & 0x1f;
		bit = tag & 0x1F;

		command = &port->commands[tag];
		fis = (struct host_to_dev_fis *) command->command;
		@@ -551,7 +543,7 @@ static void mtip_timeout_function(unsigned long int data)

		cmdto_cnt++;
		if (cmdto_cnt == 1)
		atomic_inc(&port->dd->eh_active);
		set_bit(MTIP_FLAG_EH_ACTIVE_BIT, &port->flags);

		/*
		* Clear the completed bit. This should prevent
		@@ -589,7 +581,8 @@ static void mtip_timeout_function(unsigned long int data)
		"%d commands timed out: restarting port",
		cmdto_cnt);
		mtip_restart_port(port);
		atomic_dec(&port->dd->eh_active);
		clear_bit(MTIP_FLAG_EH_ACTIVE_BIT, &port->flags);
		wake_up_interruptible(&port->svc_wait);
		}

		/* Restart the timer */
		@@ -728,7 +721,7 @@ static void mtip_handle_tfe(struct driver_data *dd)
		del_timer(&port->cmd_timer);

		/* Set eh_active */
		atomic_inc(&dd->eh_active);
		set_bit(MTIP_FLAG_EH_ACTIVE_BIT, &port->flags);

		/* Loop through all the groups */
		for (group = 0; group < dd->slot_groups; group++) {
		@@ -835,8 +828,9 @@ static void mtip_handle_tfe(struct driver_data *dd)
		}
		print_tags(dd, "TFE tags reissued:", tagaccum);

		/* Decrement eh_active */
		atomic_dec(&dd->eh_active);
		/* clear eh_active */
		clear_bit(MTIP_FLAG_EH_ACTIVE_BIT, &port->flags);
		wake_up_interruptible(&port->svc_wait);

		mod_timer(&port->cmd_timer,
		jiffies + msecs_to_jiffies(MTIP_TIMEOUT_CHECK_PERIOD));
		@@ -871,7 +865,6 @@ static inline void mtip_process_sdbf(struct driver_data *dd)
		continue;

		command = &port->commands[tag];

		/* make internal callback */
		if (likely(command->comp_func)) {
		command->comp_func(
		@@ -904,9 +897,8 @@ static inline void mtip_process_legacy(struct driver_data *dd, u32 port_stat)
		struct mtip_port *port = dd->port;
		struct mtip_cmd *cmd = &port->commands[MTIP_TAG_INTERNAL];

		if (port->internal_cmd_in_progress &&
		cmd != NULL &&
		!(readl(port->cmd_issue[MTIP_TAG_INTERNAL])
		if (test_bit(MTIP_FLAG_IC_ACTIVE_BIT, &port->flags) &&
		(cmd != NULL) && !(readl(port->cmd_issue[MTIP_TAG_INTERNAL])
		& (1 << MTIP_TAG_INTERNAL))) {
		if (cmd->comp_func) {
		cmd->comp_func(port,
		@@ -1038,11 +1030,15 @@ static int mtip_quiesce_io(struct mtip_port *port, unsigned long timeout)

		to = jiffies + msecs_to_jiffies(timeout);
		do {
		if (test_bit(MTIP_FLAG_SVC_THD_ACTIVE_BIT, &port->flags)) {
		msleep(20);
		continue; /* svc thd is actively issuing commands */
		}
		/*
		* Ignore s_active bit 0 of array element 0.
		* This bit will always be set
		*/
		active = readl(port->s_active[0]) & 0xfffffffe;
		active = readl(port->s_active[0]) & 0xFFFFFFFE;
		for (n = 1; n < port->dd->slot_groups; n++)
		active \|= readl(port->s_active[n]);

		@@ -1060,9 +1056,9 @@ static int mtip_quiesce_io(struct mtip_port *port, unsigned long timeout)
		*
		* @port Pointer to the port data structure.
		* @fis Pointer to the FIS that describes the command.
		* @fisLen Length in WORDS of the FIS.
		* @fis_len Length in WORDS of the FIS.
		* @buffer DMA accessible for command data.
		* @bufLen Length, in bytes, of the data buffer.
		* @buf_len Length, in bytes, of the data buffer.
		* @opts Command header options, excluding the FIS length
		* and the number of PRD entries.
		* @timeout Time in ms to wait for the command to complete.
		@@ -1075,9 +1071,9 @@ static int mtip_quiesce_io(struct mtip_port *port, unsigned long timeout)
		*/
		static int mtip_exec_internal_command(struct mtip_port *port,
		void *fis,
		int fisLen,
		int fis_len,
		dma_addr_t buffer,
		int bufLen,
		int buf_len,
		u32 opts,
		gfp_t atomic,
		unsigned long timeout)
		@@ -1100,7 +1096,7 @@ static int mtip_exec_internal_command(struct mtip_port *port,
		"Internal command already active\n");
		return -EBUSY;
		}
		port->internal_cmd_in_progress = 1;
		set_bit(MTIP_FLAG_IC_ACTIVE_BIT, &port->flags);

		if (atomic == GFP_KERNEL) {
		/* wait for io to complete if non atomic */
		@@ -1108,7 +1104,8 @@ static int mtip_exec_internal_command(struct mtip_port *port,
		dev_warn(&port->dd->pdev->dev,
		"Failed to quiesce IO\n");
		release_slot(port, MTIP_TAG_INTERNAL);
		port->internal_cmd_in_progress = 0;
		clear_bit(MTIP_FLAG_IC_ACTIVE_BIT, &port->flags);
		wake_up_interruptible(&port->svc_wait);
		return -EBUSY;
		}

		@@ -1123,19 +1120,23 @@ static int mtip_exec_internal_command(struct mtip_port *port,
		}

		/* Copy the command to the command table */
		memcpy(int_cmd->command, fis, fisLen*4);
		memcpy(int_cmd->command, fis, fis_len*4);

		/* Populate the SG list */
		int_cmd->command_header->opts =
		cpu_to_le32(opts \| fisLen);
		if (bufLen) {
		__force_bit2int cpu_to_le32(opts \| fis_len);
		if (buf_len) {
		command_sg = int_cmd->command + AHCI_CMD_TBL_HDR_SZ;

		command_sg->info = cpu_to_le32((bufLen-1) & 0x3fffff);
		command_sg->dba = cpu_to_le32(buffer & 0xffffffff);
		command_sg->dba_upper = cpu_to_le32((buffer >> 16) >> 16);
		command_sg->info =
		__force_bit2int cpu_to_le32((buf_len-1) & 0x3FFFFF);
		command_sg->dba =
		__force_bit2int cpu_to_le32(buffer & 0xFFFFFFFF);
		command_sg->dba_upper =
		__force_bit2int cpu_to_le32((buffer >> 16) >> 16);

		int_cmd->command_header->opts \|= cpu_to_le32((1 << 16));
		int_cmd->command_header->opts \|=
		__force_bit2int cpu_to_le32((1 << 16));
		}

		/* Populate the command header */
		@@ -1151,8 +1152,9 @@ static int mtip_exec_internal_command(struct mtip_port *port,
		&wait,
		msecs_to_jiffies(timeout)) == 0) {
		dev_err(&port->dd->pdev->dev,
		"Internal command did not complete [%d]\n",
		atomic);
		"Internal command did not complete [%d] "
		"within timeout of %lu ms\n",
		atomic, timeout);
		rv = -EAGAIN;
		}

		@@ -1184,7 +1186,8 @@ static int mtip_exec_internal_command(struct mtip_port *port,
		/* Clear the allocated and active bits for the internal command. */
		atomic_set(&int_cmd->active, 0);
		release_slot(port, MTIP_TAG_INTERNAL);
		port->internal_cmd_in_progress = 0;
		clear_bit(MTIP_FLAG_IC_ACTIVE_BIT, &port->flags);
		wake_up_interruptible(&port->svc_wait);

		return rv;
		}
		@@ -1233,8 +1236,6 @@ static int mtip_get_identify(struct mtip_port port, void __user user_buffer)
		int rv = 0;
		struct host_to_dev_fis fis;

		down_write(&port->dd->internal_sem);

		/* Build the FIS. */
		memset(&fis, 0, sizeof(struct host_to_dev_fis));
		fis.type = 0x27;
		@@ -1292,7 +1293,6 @@ static int mtip_get_identify(struct mtip_port port, void __user user_buffer)
		}

		out:
		up_write(&port->dd->internal_sem);
		return rv;
		}

		@@ -1310,8 +1310,6 @@ static int mtip_standby_immediate(struct mtip_port *port)
		int rv;
		struct host_to_dev_fis fis;

		down_write(&port->dd->internal_sem);

		/* Build the FIS. */
		memset(&fis, 0, sizeof(struct host_to_dev_fis));
		fis.type = 0x27;
		@@ -1328,8 +1326,6 @@ static int mtip_standby_immediate(struct mtip_port *port)
		GFP_KERNEL,
		15000);

		up_write(&port->dd->internal_sem);

		return rv;
		}

		@@ -1430,7 +1426,7 @@ static void mtip_dump_identify(struct mtip_port *port)
		((u64)sectors) * ATA_SECT_SIZE >> 20);

		pci_read_config_word(port->dd->pdev, PCI_REVISION_ID, &revid);
		switch (revid & 0xff) {
		switch (revid & 0xFF) {
		case 0x1:
		strlcpy(cbuf, "A0", 3);
		break;
		@@ -1470,15 +1466,12 @@ static inline void fill_command_sg(struct driver_data *dd,
		if (dma_len > 0x400000)
		dev_err(&dd->pdev->dev,
		"DMA segment length truncated\n");
		command_sg->info = cpu_to_le32((dma_len-1) & 0x3fffff);
		#if (BITS_PER_LONG == 64)
		((unsigned long ) &command_sg->dba) =
		cpu_to_le64(sg_dma_address(sg));
		#else
		command_sg->dba = cpu_to_le32(sg_dma_address(sg));
		command_sg->dba_upper =
		command_sg->info = __force_bit2int
		cpu_to_le32((dma_len-1) & 0x3FFFFF);
		command_sg->dba = __force_bit2int
		cpu_to_le32(sg_dma_address(sg));
		command_sg->dba_upper = __force_bit2int
		cpu_to_le32((sg_dma_address(sg) >> 16) >> 16);
		#endif
		command_sg++;
		sg++;
		}
		@@ -1495,9 +1488,6 @@ static int exec_drive_task(struct mtip_port port, u8 command)
		struct host_to_dev_fis fis;
		struct host_to_dev_fis *reply = (port->rxfis + RX_FIS_D2H_REG);

		/* Lock the internal command semaphore. */
		down_write(&port->dd->internal_sem);

		/* Build the FIS. */
		memset(&fis, 0, sizeof(struct host_to_dev_fis));
		fis.type = 0x27;
		@@ -1532,7 +1522,6 @@ static int exec_drive_task(struct mtip_port port, u8 command)
		0,
		GFP_KERNEL,
		MTIP_IOCTL_COMMAND_TIMEOUT_MS) < 0) {
		up_write(&port->dd->internal_sem);
		return -1;
		}

		@@ -1549,7 +1538,6 @@ static int exec_drive_task(struct mtip_port port, u8 command)
		command[4],
		command[5]);

		up_write(&port->dd->internal_sem);
		return 0;
		}

		@@ -1572,9 +1560,6 @@ static int exec_drive_command(struct mtip_port port, u8 command,
		struct host_to_dev_fis fis;
		struct host_to_dev_fis *reply = (port->rxfis + RX_FIS_D2H_REG);

		/* Lock the internal command semaphore. */
		down_write(&port->dd->internal_sem);

		/* Build the FIS. */
		memset(&fis, 0, sizeof(struct host_to_dev_fis));
		fis.type = 0x27;
		@@ -1584,8 +1569,8 @@ static int exec_drive_command(struct mtip_port port, u8 command,
		fis.sect_count = command[3];
		if (fis.command == ATA_CMD_SMART) {
		fis.sector = command[1];
		fis.cyl_low = 0x4f;
		fis.cyl_hi = 0xc2;
		fis.cyl_low = 0x4F;
		fis.cyl_hi = 0xC2;
		}

		dbg_printk(MTIP_DRV_NAME
		@@ -1609,7 +1594,6 @@ static int exec_drive_command(struct mtip_port port, u8 command,
		GFP_KERNEL,
		MTIP_IOCTL_COMMAND_TIMEOUT_MS)
		< 0) {
		up_write(&port->dd->internal_sem);
		return -1;
		}

		@@ -1630,12 +1614,10 @@ static int exec_drive_command(struct mtip_port port, u8 command,
		if (copy_to_user(user_buffer,
		port->sector_buffer,
		ATA_SECT_SIZE * command[3])) {
		up_write(&port->dd->internal_sem);
		return -EFAULT;
		}
		}

		up_write(&port->dd->internal_sem);
		return 0;
		}

		@@ -1658,26 +1640,28 @@ static unsigned int implicit_sector(unsigned char command,

		/* list of commands that have an implicit sector count of 1 */
		switch (command) {
		case 0xF1:
		case 0xF2:
		case 0xF3:
		case 0xF4:
		case 0xF5:
		case 0xF6:
		case 0xE4:
		case 0xE8:
		case ATA_CMD_SEC_SET_PASS:
		case ATA_CMD_SEC_UNLOCK:
		case ATA_CMD_SEC_ERASE_PREP:
		case ATA_CMD_SEC_ERASE_UNIT:
		case ATA_CMD_SEC_FREEZE_LOCK:
		case ATA_CMD_SEC_DISABLE_PASS:
		case ATA_CMD_PMP_READ:
		case ATA_CMD_PMP_WRITE:
		rv = 1;
		break;
		case 0xF9:
		if (features == 0x03)
		case ATA_CMD_SET_MAX:
		if (features == ATA_SET_MAX_UNLOCK)
		rv = 1;
		break;
		case 0xB0:
		if ((features == 0xD0) \|\| (features == 0xD1))
		case ATA_CMD_SMART:
		if ((features == ATA_SMART_READ_VALUES) \|\|
		(features == ATA_SMART_READ_THRESHOLDS))
		rv = 1;
		break;
		case 0xB1:
		if ((features == 0xC2) \|\| (features == 0xC3))
		case ATA_CMD_CONF_OVERLAY:
		if ((features == ATA_DCO_IDENTIFY) \|\|
		(features == ATA_DCO_SET))
		rv = 1;
		break;
		}
		@@ -1777,9 +1761,6 @@ static int exec_drive_taskfile(struct driver_data *dd,
		goto abort;
		}

		/* Lock the internal command semaphore. */
		down_write(&dd->internal_sem);

		/* Build the FIS. */
		memset(&fis, 0, sizeof(struct host_to_dev_fis));

		@@ -1818,7 +1799,6 @@ static int exec_drive_taskfile(struct driver_data *dd,
		dev_warn(&dd->pdev->dev,
		"data movement but "
		"sect_count is 0\n");
		up_write(&dd->internal_sem);
		err = -EINVAL;
		goto abort;
		}
		@@ -1838,19 +1818,25 @@ static int exec_drive_taskfile(struct driver_data *dd,
		fis.device);

		switch (fis.command) {
		case 0x92: /* Change timeout for Download Microcode to 60 seconds.*/
		case ATA_CMD_DOWNLOAD_MICRO:
		/* Change timeout for Download Microcode to 60 seconds.*/
		timeout = 60000;
		break;
		case 0xf4: /* Change timeout for Security Erase Unit to 4 minutes.*/
		case ATA_CMD_SEC_ERASE_UNIT:
		/* Change timeout for Security Erase Unit to 4 minutes.*/
		timeout = 240000;
		break;
		case 0xe0: /* Change timeout for standby immediate to 10 seconds.*/
		case ATA_CMD_STANDBYNOW1:
		/* Change timeout for standby immediate to 10 seconds.*/
		timeout = 10000;
		break;
		case 0xf7: /* Change timeout for vendor unique command to 10 secs */
		case 0xF7:
		case 0xFA:
		/* Change timeout for vendor unique command to 10 secs */
		timeout = 10000;
		break;
		case 0xfa: /* Change timeout for vendor unique command to 10 secs */
		case ATA_CMD_SMART:
		/* Change timeout for vendor unique command to 10 secs */
		timeout = 10000;
		break;
		default:
		@@ -1873,7 +1859,6 @@ static int exec_drive_taskfile(struct driver_data *dd,
		0,
		GFP_KERNEL,
		timeout) < 0) {
		up_write(&dd->internal_sem);
		err = -EIO;
		goto abort;
		}
		@@ -1916,7 +1901,7 @@ static int exec_drive_taskfile(struct driver_data *dd,
		}

		/* Com rest after secure erase or lowlevel format */
		if (((fis.command == 0xF4) \|\|
		if (((fis.command == ATA_CMD_SEC_ERASE_UNIT) \|\|
		((fis.command == 0xFC) &&
		(fis.features == 0x27 \|\| fis.features == 0x72 \|\|
		fis.features == 0x62 \|\| fis.features == 0x26))) &&
		@@ -1937,8 +1922,6 @@ static int exec_drive_taskfile(struct driver_data *dd,
		req_task->io_ports[5],
		req_task->io_ports[6]);

		up_write(&dd->internal_sem);

		if (taskout) {
		if (copy_to_user(buf + outtotal, outbuf, taskout)) {
		err = -EFAULT;
		@@ -2052,7 +2035,8 @@ static int mtip_hw_ioctl(struct driver_data *dd, unsigned int cmd,
		ret = exec_drive_taskfile(dd, (void __user *) arg,
		&req_task, outtotal);

		if (copy_to_user((void __user *) arg, &req_task, sizeof(req_task)))
		if (copy_to_user((void __user *) arg, &req_task,
		sizeof(req_task)))
		return -EFAULT;

		return ret;
		@@ -2117,13 +2101,13 @@ static void mtip_hw_submit_io(struct driver_data *dd, sector_t start,
		fis->opts = 1 << 7;
		fis->command =
		(dir == READ ? ATA_CMD_FPDMA_READ : ATA_CMD_FPDMA_WRITE);
		((unsigned int ) &fis->lba_low) = (start & 0xffffff);
		((unsigned int ) &fis->lba_low_ex) = ((start >> 24) & 0xffffff);
		((unsigned int ) &fis->lba_low) = (start & 0xFFFFFF);
		((unsigned int ) &fis->lba_low_ex) = ((start >> 24) & 0xFFFFFF);
		fis->device = 1 << 6;
		if (barrier)
		fis->device \|= FUA_BIT;
		fis->features = nsect & 0xff;
		fis->features_ex = (nsect >> 8) & 0xff;
		fis->features = nsect & 0xFF;
		fis->features_ex = (nsect >> 8) & 0xFF;
		fis->sect_count = ((tag << 3) \| (tag >> 5));
		fis->sect_cnt_ex = 0;
		fis->control = 0;
		@@ -2132,7 +2116,8 @@ static void mtip_hw_submit_io(struct driver_data *dd, sector_t start,
		fill_command_sg(dd, command, nents);

		/* Populate the command header */
		command->command_header->opts = cpu_to_le32(
		command->command_header->opts =
		__force_bit2int cpu_to_le32(
		(nents << 16) \| 5 \| AHCI_CMD_PREFETCH);
		command->command_header->byte_count = 0;

		@@ -2152,10 +2137,15 @@ static void mtip_hw_submit_io(struct driver_data *dd, sector_t start,
		command->async_callback = callback;

		/*
		* Lock used to prevent this command from being issued
		* if an internal command is in progress.
		* To prevent this command from being issued
		* if an internal command is in progress or error handling is active.
		*/
		down_read(&port->dd->internal_sem);
		if (unlikely(test_bit(MTIP_FLAG_IC_ACTIVE_BIT, &port->flags) \|\|
		test_bit(MTIP_FLAG_EH_ACTIVE_BIT, &port->flags))) {
		set_bit(tag, port->cmds_to_issue);
		set_bit(MTIP_FLAG_ISSUE_CMDS_BIT, &port->flags);
		return;
		}

		/* Issue the command to the hardware */
		mtip_issue_ncq_command(port, tag);
		@@ -2163,8 +2153,6 @@ static void mtip_hw_submit_io(struct driver_data *dd, sector_t start,
		/* Set the command's timeout value.*/
		port->commands[tag].comp_time = jiffies + msecs_to_jiffies(
		MTIP_NCQ_COMMAND_TIMEOUT_MS);

		up_read(&port->dd->internal_sem);
		}

		/*
		@@ -2400,10 +2388,9 @@ static int mtip_ftl_rebuild_poll(struct driver_data *dd)
		timeout = jiffies + msecs_to_jiffies(MTIP_FTL_REBUILD_TIMEOUT_MS);

		do {
		#ifdef CONFIG_HOTPLUG
		if (mtip_check_surprise_removal(dd->pdev))
		return -EFAULT;
		#endif

		if (mtip_get_identify(dd->port, NULL) < 0)
		return -EFAULT;

		@@ -2438,6 +2425,74 @@ static int mtip_ftl_rebuild_poll(struct driver_data *dd)
		return 0;
		}

		/*
		* service thread to issue queued commands
		*
		* @data Pointer to the driver data structure.
		*
		* return value
		* 0
		*/

		static int mtip_service_thread(void *data)
		{
		struct driver_data dd = (struct driver_data )data;
		unsigned long slot, slot_start, slot_wrap;
		unsigned int num_cmd_slots = dd->slot_groups * 32;
		struct mtip_port *port = dd->port;

		while (1) {
		/*
		* the condition is to check neither an internal command is
		* is in progress nor error handling is active
		*/
		wait_event_interruptible(port->svc_wait, (port->flags) &&
		!test_bit(MTIP_FLAG_IC_ACTIVE_BIT, &port->flags) &&
		!test_bit(MTIP_FLAG_EH_ACTIVE_BIT, &port->flags));

		if (kthread_should_stop())
		break;

		if (test_bit(MTIP_FLAG_ISSUE_CMDS_BIT, &port->flags)) {
		set_bit(MTIP_FLAG_SVC_THD_ACTIVE_BIT, &port->flags);
		slot = 1;
		/* used to restrict the loop to one iteration */
		slot_start = num_cmd_slots;
		slot_wrap = 0;
		while (1) {
		slot = find_next_bit(port->cmds_to_issue,
		num_cmd_slots, slot);
		if (slot_wrap == 1) {
		if ((slot_start >= slot) \|\|
		(slot >= num_cmd_slots))
		break;
		}
		if (unlikely(slot_start == num_cmd_slots))
		slot_start = slot;

		if (unlikely(slot == num_cmd_slots)) {
		slot = 1;
		slot_wrap = 1;
		continue;
		}

		/* Issue the command to the hardware */
		mtip_issue_ncq_command(port, slot);

		/* Set the command's timeout value.*/
		port->commands[slot].comp_time = jiffies +
		msecs_to_jiffies(MTIP_NCQ_COMMAND_TIMEOUT_MS);

		clear_bit(slot, port->cmds_to_issue);
		}

		clear_bit(MTIP_FLAG_ISSUE_CMDS_BIT, &port->flags);
		clear_bit(MTIP_FLAG_SVC_THD_ACTIVE_BIT, &port->flags);
		}
		}
		return 0;
		}

		/*
		* Called once for each card.
		*
		@@ -2463,13 +2518,6 @@ static int mtip_hw_init(struct driver_data *dd)

		hba_setup(dd);

		/*
		* Initialize the internal semaphore
		* Use a rw semaphore to enable prioritization of
		* mgmnt ioctl traffic during heavy IO load
		*/
		init_rwsem(&dd->internal_sem);

		tasklet_init(&dd->tasklet, mtip_tasklet, (unsigned long)dd);

		dd->port = kzalloc(sizeof(struct mtip_port), GFP_KERNEL);
		@@ -2541,10 +2589,11 @@ static int mtip_hw_init(struct driver_data *dd)

		if (readl(dd->mmio + HOST_CAP) & HOST_CAP_64)
		dd->port->commands[i].command_header->ctbau =
		cpu_to_le32(
		__force_bit2int cpu_to_le32(
		(dd->port->commands[i].command_dma >> 16) >> 16);
		dd->port->commands[i].command_header->ctba = cpu_to_le32(
		dd->port->commands[i].command_dma & 0xffffffff);
		dd->port->commands[i].command_header->ctba =
		__force_bit2int cpu_to_le32(
		dd->port->commands[i].command_dma & 0xFFFFFFFF);

		/*
		* If this is not done, a bug is reported by the stock
		@@ -2597,6 +2646,8 @@ static int mtip_hw_init(struct driver_data *dd)
		dd->mmio + HOST_CTL);

		init_timer(&dd->port->cmd_timer);
		init_waitqueue_head(&dd->port->svc_wait);

		dd->port->cmd_timer.data = (unsigned long int) dd->port;
		dd->port->cmd_timer.function = mtip_timeout_function;
		mod_timer(&dd->port->cmd_timer,
		@@ -2667,12 +2718,12 @@ static int mtip_hw_exit(struct driver_data *dd)

		del_timer_sync(&dd->port->cmd_timer);

		/* Stop the bottom half tasklet. */
		tasklet_kill(&dd->tasklet);

		/* Release the IRQ. */
		devm_free_irq(&dd->pdev->dev, dd->pdev->irq, dd);

		/* Stop the bottom half tasklet. */
		tasklet_kill(&dd->tasklet);

		/* Free the command/command header memory. */
		dmam_free_coherent(&dd->pdev->dev,
		HW_PORT_PRIV_DMA_SZ + (ATA_SECT_SIZE * 2),
		@@ -2835,7 +2886,7 @@ static int mtip_block_ioctl(struct block_device *dev,

		switch (cmd) {
		case BLKFLSBUF:
		return 0;
		return -ENOTTY;
		default:
		return mtip_hw_ioctl(dd, cmd, arg);
		}
		@@ -2870,13 +2921,14 @@ static int mtip_block_compat_ioctl(struct block_device *dev,

		switch (cmd) {
		case BLKFLSBUF:
		return 0;
		return -ENOTTY;
		case HDIO_DRIVE_TASKFILE: {
		struct mtip_compat_ide_task_request_s *compat_req_task;
		struct mtip_compat_ide_task_request_s __user *compat_req_task;
		ide_task_request_t req_task;
		int compat_tasksize, outtotal, ret;

		compat_tasksize = sizeof(struct mtip_compat_ide_task_request_s);
		compat_tasksize =
		sizeof(struct mtip_compat_ide_task_request_s);

		compat_req_task =
		(struct mtip_compat_ide_task_request_s __user *) arg;
		@@ -2950,12 +3002,8 @@ static int mtip_block_getgeo(struct block_device *dev,

		geo->heads = 224;
		geo->sectors = 56;
		#if BITS_PER_LONG == 64
		geo->cylinders = capacity / (geo->heads * geo->sectors);
		#else
		do_div(capacity, (geo->heads * geo->sectors));
		sector_div(capacity, (geo->heads * geo->sectors));
		geo->cylinders = capacity;
		#endif
		return 0;
		}

		@@ -2999,11 +3047,6 @@ static void mtip_make_request(struct request_queue queue, struct bio bio)
		return;
		}

		if (unlikely(atomic_read(&dd->eh_active))) {
		bio_endio(bio, -EBUSY);
		return;
		}

		sg = mtip_hw_get_scatterlist(dd, &tag);
		if (likely(sg != NULL)) {
		blk_queue_bounce(queue, &bio);
		@@ -3032,7 +3075,7 @@ static void mtip_make_request(struct request_queue queue, struct bio bio)
		tag,
		bio_endio,
		bio,
		bio->bi_rw & REQ_FLUSH,
		bio->bi_rw & REQ_FUA,
		bio_data_dir(bio));
		} else
		bio_io_error(bio);
		@@ -3055,6 +3098,7 @@ static int mtip_block_initialize(struct driver_data *dd)
		sector_t capacity;
		unsigned int index = 0;
		struct kobject *kobj;
		unsigned char thd_name[16];

		/* Initialize the protocol layer. */
		rv = mtip_hw_init(dd);
		@@ -3082,6 +3126,7 @@ static int mtip_block_initialize(struct driver_data *dd)
		blk_queue_max_segments(dd->queue, MTIP_MAX_SG);
		blk_queue_physical_block_size(dd->queue, 4096);
		blk_queue_io_min(dd->queue, 4096);
		blk_queue_flush(dd->queue, 0);

		dd->disk = alloc_disk(MTIP_MAX_MINORS);
		if (dd->disk == NULL) {
		@@ -3142,6 +3187,18 @@ static int mtip_block_initialize(struct driver_data *dd)
		kobject_put(kobj);
		}

		sprintf(thd_name, "mtip_svc_thd_%02d", index);

		dd->mtip_svc_handler = kthread_run(mtip_service_thread,
		dd, thd_name);

		if (IS_ERR(dd->mtip_svc_handler)) {
		printk(KERN_ERR "mtip32xx: service thread failed to start\n");
		dd->mtip_svc_handler = NULL;
		rv = -EFAULT;
		goto read_capacity_error;
		}

		return rv;

		read_capacity_error:
		@@ -3183,6 +3240,13 @@ static int mtip_block_initialize(struct driver_data *dd)
		static int mtip_block_remove(struct driver_data *dd)
		{
		struct kobject *kobj;

		if (dd->mtip_svc_handler) {
		set_bit(MTIP_FLAG_SVC_THD_SHOULD_STOP_BIT, &dd->port->flags);
		wake_up_interruptible(&dd->port->svc_wait);
		kthread_stop(dd->mtip_svc_handler);
		}

		/* Clean up the sysfs attributes managed by the protocol layer. */
		kobj = kobject_get(&disk_to_dev(dd->disk)->kobj);
		if (kobj) {
		@@ -3275,7 +3339,6 @@ static int mtip_pci_probe(struct pci_dev *pdev,
		atomic_set(&dd->drv_cleanup_done, true);

		atomic_set(&dd->resumeflag, false);
		atomic_set(&dd->eh_active, 0);

		/* Attach the private data to this PCI device. */
		pci_set_drvdata(pdev, dd);
		@@ -3317,7 +3380,6 @@ static int mtip_pci_probe(struct pci_dev *pdev,

		/* Copy the info we may need later into the private data structure. */
		dd->major = mtip_major;
		dd->protocol = ent->driver_data;
		dd->instance = instance;
		dd->pdev = pdev;

drivers/block/mtip32xx/mtip32xx.h

+28 −14

Original line number	Diff line number	Diff line
		@@ -47,11 +47,11 @@

		/* ftl rebuild */
		#define MTIP_FTL_REBUILD_OFFSET 142
		#define MTIP_FTL_REBUILD_MAGIC 0xed51
		#define MTIP_FTL_REBUILD_MAGIC 0xED51
		#define MTIP_FTL_REBUILD_TIMEOUT_MS 2400000

		/* Macro to extract the tag bit number from a tag value. */
		#define MTIP_TAG_BIT(tag) (tag & 0x1f)
		#define MTIP_TAG_BIT(tag) (tag & 0x1F)

		/*
		* Macro to extract the tag index from a tag value. The index
		@@ -81,7 +81,7 @@

		/* Driver name and version strings */
		#define MTIP_DRV_NAME "mtip32xx"
		#define MTIP_DRV_VERSION "1.2.6os2"
		#define MTIP_DRV_VERSION "1.2.6os3"

		/* Maximum number of minor device numbers per device. */
		#define MTIP_MAX_MINORS 16
		@@ -114,6 +114,15 @@
		#define dbg_printk(format, arg...)
		#endif

		#define __force_bit2int (unsigned int __force)

		/* below are bit numbers in 'flags' defined in mtip_port */
		#define MTIP_FLAG_IC_ACTIVE_BIT 0
		#define MTIP_FLAG_EH_ACTIVE_BIT 1
		#define MTIP_FLAG_SVC_THD_ACTIVE_BIT 2
		#define MTIP_FLAG_ISSUE_CMDS_BIT 4
		#define MTIP_FLAG_SVC_THD_SHOULD_STOP_BIT 8

		/* Register Frame Information Structure (FIS), host to device. */
		struct host_to_dev_fis {
		/*
		@@ -339,14 +348,24 @@ struct mtip_port {
		* are no longer needed.
		*/
		unsigned long allocated[SLOTBITS_IN_LONGS];
		/*
		* used to queue commands when an internal command is in progress
		* or error handling is active
		*/
		unsigned long cmds_to_issue[SLOTBITS_IN_LONGS];
		/*
		* Array of command slots. Structure includes pointers to the
		* command header and command table, and completion function and data
		* pointers.
		*/
		struct mtip_cmd commands[MTIP_MAX_COMMAND_SLOTS];
		/* Non-zero if an internal command is in progress. */
		int internal_cmd_in_progress;
		/* 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.
		*/
		@@ -372,18 +391,11 @@ struct driver_data {

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

		int protocol; /* FIXME: Protocol ops array index. */

		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. */
		/*
		* Semaphore used to lock out read/write commands during the
		* execution of an internal command.
		*/
		struct rw_semaphore internal_sem;

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

		@@ -403,6 +415,8 @@ struct driver_data {
		atomic_t resumeflag; /* Atomic variable to track suspend/resume */

		atomic_t eh_active; /* Flag for error handling tracking */

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

		#endif