mtip32xx: Add new bitwise flag 'dd_flag'
* Merged the following flags into one variable 'dd_flag':
* drv_cleanup_done
* resumeflag
* Added the following flags into 'dd_flag'
* remove pending
* init done
* Removed 'ftlrebuildflag' (similar flag is already part of mti_port->flags)
Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Asai Thambi S P
Jens Axboe
parent
6d27f09a63
commit
45038367c2
@ -36,6 +36,7 @@
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#include <linux/idr.h>
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#include <linux/kthread.h>
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#include <../drivers/ata/ahci.h>
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#include <linux/export.h>
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#include "mtip32xx.h"
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#define HW_CMD_SLOT_SZ (MTIP_MAX_COMMAND_SLOTS * 32)
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@ -44,6 +45,7 @@
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#define HW_PORT_PRIV_DMA_SZ \
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(HW_CMD_SLOT_SZ + HW_CMD_TBL_AR_SZ + AHCI_RX_FIS_SZ)
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#define HOST_CAP_NZDMA (1 << 19)
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#define HOST_HSORG 0xFC
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#define HSORG_DISABLE_SLOTGRP_INTR (1<<24)
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#define HSORG_DISABLE_SLOTGRP_PXIS (1<<16)
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@ -139,6 +141,12 @@ static void mtip_command_cleanup(struct driver_data *dd)
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int group = 0, commandslot = 0, commandindex = 0;
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struct mtip_cmd *command;
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struct mtip_port *port = dd->port;
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static int in_progress;
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if (in_progress)
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return;
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in_progress = 1;
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for (group = 0; group < 4; group++) {
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for (commandslot = 0; commandslot < 32; commandslot++) {
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@ -165,7 +173,8 @@ static void mtip_command_cleanup(struct driver_data *dd)
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up(&port->cmd_slot);
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atomic_set(&dd->drv_cleanup_done, true);
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set_bit(MTIP_DD_FLAG_CLEANUP_BIT, &dd->dd_flag);
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in_progress = 0;
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}
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/*
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@ -262,6 +271,9 @@ static int hba_reset_nosleep(struct driver_data *dd)
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&& time_before(jiffies, timeout))
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mdelay(1);
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if (test_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT, &dd->dd_flag))
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return -1;
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if (readl(dd->mmio + HOST_CTL) & HOST_RESET)
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return -1;
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@ -451,6 +463,9 @@ static void mtip_restart_port(struct mtip_port *port)
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&& time_before(jiffies, timeout))
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;
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if (test_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT, &port->dd->dd_flag))
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return;
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/*
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* Chip quirk: escalate to hba reset if
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* PxCMD.CR not clear after 500 ms
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@ -479,6 +494,9 @@ static void mtip_restart_port(struct mtip_port *port)
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while (time_before(jiffies, timeout))
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;
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if (test_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT, &port->dd->dd_flag))
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return;
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/* Clear PxSCTL.DET */
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writel(readl(port->mmio + PORT_SCR_CTL) & ~1,
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port->mmio + PORT_SCR_CTL);
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@ -490,6 +508,9 @@ static void mtip_restart_port(struct mtip_port *port)
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&& time_before(jiffies, timeout))
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;
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if (test_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT, &port->dd->dd_flag))
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return;
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if ((readl(port->mmio + PORT_SCR_STAT) & 0x01) == 0)
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dev_warn(&port->dd->pdev->dev,
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"COM reset failed\n");
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@ -520,7 +541,7 @@ static void mtip_timeout_function(unsigned long int data)
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if (unlikely(!port))
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return;
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if (atomic_read(&port->dd->resumeflag) == true) {
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if (test_bit(MTIP_DD_FLAG_RESUME_BIT, &port->dd->dd_flag)) {
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mod_timer(&port->cmd_timer,
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jiffies + msecs_to_jiffies(30000));
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return;
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@ -970,6 +991,9 @@ static inline irqreturn_t mtip_handle_irq(struct driver_data *data)
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/* don't proceed further */
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return IRQ_HANDLED;
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}
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if (test_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT,
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&dd->dd_flag))
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return rv;
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mtip_process_errors(dd, port_stat & PORT_IRQ_ERR);
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}
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@ -1040,6 +1064,9 @@ static int mtip_quiesce_io(struct mtip_port *port, unsigned long timeout)
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msleep(20);
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continue; /* svc thd is actively issuing commands */
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}
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if (test_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT,
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&port->dd->dd_flag))
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return -EFAULT;
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/*
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* Ignore s_active bit 0 of array element 0.
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* This bit will always be set
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@ -1161,6 +1188,12 @@ static int mtip_exec_internal_command(struct mtip_port *port,
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"Internal command did not complete [%d] "
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"within timeout of %lu ms\n",
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atomic, timeout);
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if (mtip_check_surprise_removal(port->dd->pdev) ||
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test_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT,
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&port->dd->dd_flag)) {
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rv = -ENXIO;
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goto exec_ic_exit;
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}
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rv = -EAGAIN;
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}
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@ -1168,6 +1201,15 @@ static int mtip_exec_internal_command(struct mtip_port *port,
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& (1 << MTIP_TAG_INTERNAL)) {
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dev_warn(&port->dd->pdev->dev,
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"Retiring internal command but CI is 1.\n");
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if (test_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT,
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&port->dd->dd_flag)) {
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hba_reset_nosleep(port->dd);
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rv = -ENXIO;
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} else {
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mtip_restart_port(port);
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rv = -EAGAIN;
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}
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goto exec_ic_exit;
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}
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} else {
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@ -1177,8 +1219,14 @@ static int mtip_exec_internal_command(struct mtip_port *port,
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while ((readl(
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port->cmd_issue[MTIP_TAG_INTERNAL])
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& (1 << MTIP_TAG_INTERNAL))
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&& time_before(jiffies, timeout))
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;
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&& time_before(jiffies, timeout)) {
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if (mtip_check_surprise_removal(port->dd->pdev) ||
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test_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT,
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&port->dd->dd_flag)) {
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rv = -ENXIO;
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goto exec_ic_exit;
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}
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}
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if (readl(port->cmd_issue[MTIP_TAG_INTERNAL])
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& (1 << MTIP_TAG_INTERNAL)) {
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@ -1186,9 +1234,17 @@ static int mtip_exec_internal_command(struct mtip_port *port,
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"Internal command did not complete [%d]\n",
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atomic);
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rv = -EAGAIN;
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if (test_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT,
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&port->dd->dd_flag)) {
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hba_reset_nosleep(port->dd);
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rv = -ENXIO;
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} else {
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mtip_restart_port(port);
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rv = -EAGAIN;
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}
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}
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}
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exec_ic_exit:
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/* Clear the allocated and active bits for the internal command. */
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atomic_set(&int_cmd->active, 0);
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release_slot(port, MTIP_TAG_INTERNAL);
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@ -1242,6 +1298,9 @@ static int mtip_get_identify(struct mtip_port *port, void __user *user_buffer)
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int rv = 0;
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struct host_to_dev_fis fis;
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if (test_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT, &port->dd->dd_flag))
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return -EFAULT;
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/* Build the FIS. */
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memset(&fis, 0, sizeof(struct host_to_dev_fis));
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fis.type = 0x27;
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@ -1507,9 +1566,7 @@ static int exec_drive_task(struct mtip_port *port, u8 *command)
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fis.device = command[6] & ~0x10; /* Clear the dev bit*/
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dbg_printk(MTIP_DRV_NAME "%s: User Command: cmd %x, feat %x, "
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"nsect %x, sect %x, lcyl %x, "
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"hcyl %x, sel %x\n",
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dbg_printk(MTIP_DRV_NAME "%s: User Command: cmd %x, feat %x, nsect %x, sect %x, lcyl %x, hcyl %x, sel %x\n",
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__func__,
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command[0],
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command[1],
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@ -1536,8 +1593,7 @@ static int exec_drive_task(struct mtip_port *port, u8 *command)
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command[4] = reply->cyl_low;
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command[5] = reply->cyl_hi;
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dbg_printk(MTIP_DRV_NAME "%s: Completion Status: stat %x, "
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"err %x , cyl_lo %x cyl_hi %x\n",
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dbg_printk(MTIP_DRV_NAME "%s: Completion Status: stat %x, err %x , cyl_lo %x cyl_hi %x\n",
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__func__,
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command[0],
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command[1],
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@ -2082,14 +2138,10 @@ static void mtip_hw_submit_io(struct driver_data *dd, sector_t start,
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struct host_to_dev_fis *fis;
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struct mtip_port *port = dd->port;
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struct mtip_cmd *command = &port->commands[tag];
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int dma_dir = (dir == READ) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
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/* Map the scatter list for DMA access */
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if (dir == READ)
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nents = dma_map_sg(&dd->pdev->dev, command->sg,
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nents, DMA_FROM_DEVICE);
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else
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nents = dma_map_sg(&dd->pdev->dev, command->sg,
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nents, DMA_TO_DEVICE);
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nents = dma_map_sg(&dd->pdev->dev, command->sg, nents, dma_dir);
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command->scatter_ents = nents;
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@ -2129,7 +2181,7 @@ static void mtip_hw_submit_io(struct driver_data *dd, sector_t start,
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*/
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command->comp_data = dd;
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command->comp_func = mtip_async_complete;
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command->direction = (dir == READ ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
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command->direction = dma_dir;
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/*
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* Set the completion function and data for the command passed
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@ -2193,6 +2245,10 @@ static struct scatterlist *mtip_hw_get_scatterlist(struct driver_data *dd,
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down(&dd->port->cmd_slot);
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*tag = get_slot(dd->port);
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if (unlikely(test_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT, &dd->dd_flag))) {
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up(&dd->port->cmd_slot);
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return NULL;
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}
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if (unlikely(*tag < 0))
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return NULL;
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@ -2209,7 +2265,7 @@ static struct scatterlist *mtip_hw_get_scatterlist(struct driver_data *dd,
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* return value
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* The size, in bytes, of the data copied into buf.
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*/
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static ssize_t hw_show_registers(struct device *dev,
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static ssize_t mtip_hw_show_registers(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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@ -2255,7 +2311,7 @@ static ssize_t hw_show_registers(struct device *dev,
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return size;
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}
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static DEVICE_ATTR(registers, S_IRUGO, hw_show_registers, NULL);
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static DEVICE_ATTR(registers, S_IRUGO, mtip_hw_show_registers, NULL);
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/*
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* Create the sysfs related attributes.
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@ -2386,10 +2442,12 @@ static int mtip_ftl_rebuild_poll(struct driver_data *dd)
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"FTL rebuild in progress. Polling for completion.\n");
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start = jiffies;
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dd->ftlrebuildflag = 1;
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timeout = jiffies + msecs_to_jiffies(MTIP_FTL_REBUILD_TIMEOUT_MS);
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do {
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if (unlikely(test_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT,
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&dd->dd_flag)))
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return -EFAULT;
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if (mtip_check_surprise_removal(dd->pdev))
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return -EFAULT;
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@ -2410,22 +2468,17 @@ static int mtip_ftl_rebuild_poll(struct driver_data *dd)
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dev_warn(&dd->pdev->dev,
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"FTL rebuild complete (%d secs).\n",
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jiffies_to_msecs(jiffies - start) / 1000);
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dd->ftlrebuildflag = 0;
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mtip_block_initialize(dd);
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break;
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return 0;
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}
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ssleep(10);
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} while (time_before(jiffies, timeout));
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/* Check for timeout */
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if (dd->ftlrebuildflag) {
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dev_err(&dd->pdev->dev,
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dev_err(&dd->pdev->dev,
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"Timed out waiting for FTL rebuild to complete (%d secs).\n",
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jiffies_to_msecs(jiffies - start) / 1000);
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return -EFAULT;
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}
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return 0;
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return -EFAULT;
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}
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/*
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@ -2456,6 +2509,9 @@ static int mtip_service_thread(void *data)
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if (kthread_should_stop())
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break;
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if (unlikely(test_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT,
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&dd->dd_flag)))
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break;
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set_bit(MTIP_FLAG_SVC_THD_ACTIVE_BIT, &port->flags);
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if (test_bit(MTIP_FLAG_ISSUE_CMDS_BIT, &port->flags)) {
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slot = 1;
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@ -2515,6 +2571,7 @@ static int mtip_hw_init(struct driver_data *dd)
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int i;
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int rv;
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unsigned int num_command_slots;
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unsigned long timeout, timetaken;
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dd->mmio = pcim_iomap_table(dd->pdev)[MTIP_ABAR];
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@ -2625,14 +2682,43 @@ static int mtip_hw_init(struct driver_data *dd)
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dd->port->mmio + i*0x80 + PORT_SDBV;
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}
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/* Reset the HBA. */
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if (mtip_hba_reset(dd) < 0) {
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dev_err(&dd->pdev->dev,
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"Card did not reset within timeout\n");
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rv = -EIO;
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timetaken = jiffies;
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timeout = jiffies + msecs_to_jiffies(30000);
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while (((readl(dd->port->mmio + PORT_SCR_STAT) & 0x0F) != 0x03) &&
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time_before(jiffies, timeout)) {
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mdelay(100);
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}
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if (unlikely(mtip_check_surprise_removal(dd->pdev))) {
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timetaken = jiffies - timetaken;
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dev_warn(&dd->pdev->dev,
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"Surprise removal detected at %u ms\n",
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jiffies_to_msecs(timetaken));
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rv = -ENODEV;
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goto out2 ;
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}
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if (unlikely(test_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT, &dd->dd_flag))) {
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timetaken = jiffies - timetaken;
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dev_warn(&dd->pdev->dev,
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"Removal detected at %u ms\n",
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jiffies_to_msecs(timetaken));
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rv = -EFAULT;
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goto out2;
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}
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/* Conditionally reset the HBA. */
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if (!(readl(dd->mmio + HOST_CAP) & HOST_CAP_NZDMA)) {
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if (mtip_hba_reset(dd) < 0) {
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dev_err(&dd->pdev->dev,
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"Card did not reset within timeout\n");
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rv = -EIO;
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goto out2;
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}
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} else {
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/* Clear any pending interrupts on the HBA */
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writel(readl(dd->mmio + HOST_IRQ_STAT),
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dd->mmio + HOST_IRQ_STAT);
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}
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mtip_init_port(dd->port);
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mtip_start_port(dd->port);
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@ -2662,6 +2748,12 @@ static int mtip_hw_init(struct driver_data *dd)
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mod_timer(&dd->port->cmd_timer,
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jiffies + msecs_to_jiffies(MTIP_TIMEOUT_CHECK_PERIOD));
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if (test_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT, &dd->dd_flag)) {
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rv = -EFAULT;
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goto out3;
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}
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if (mtip_get_identify(dd->port, NULL) < 0) {
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rv = -EFAULT;
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goto out3;
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@ -2714,9 +2806,12 @@ static int mtip_hw_exit(struct driver_data *dd)
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* Send standby immediate (E0h) to the drive so that it
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* saves its state.
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*/
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if (atomic_read(&dd->drv_cleanup_done) != true) {
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if (!test_bit(MTIP_DD_FLAG_CLEANUP_BIT, &dd->dd_flag)) {
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mtip_standby_immediate(dd->port);
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if (test_bit(MTIP_FLAG_REBUILD_BIT, &dd->dd_flag))
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if (mtip_standby_immediate(dd->port))
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dev_warn(&dd->pdev->dev,
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"STANDBY IMMEDIATE failed\n");
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/* de-initialize the port. */
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mtip_deinit_port(dd->port);
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@ -2894,6 +2989,9 @@ static int mtip_block_ioctl(struct block_device *dev,
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if (!dd)
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return -ENOTTY;
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if (unlikely(test_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT, &dd->dd_flag)))
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return -ENOTTY;
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switch (cmd) {
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case BLKFLSBUF:
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return -ENOTTY;
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@ -2929,6 +3027,9 @@ static int mtip_block_compat_ioctl(struct block_device *dev,
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if (!dd)
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return -ENOTTY;
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if (unlikely(test_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT, &dd->dd_flag)))
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return -ENOTTY;
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switch (cmd) {
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||||
case BLKFLSBUF:
|
||||
return -ENOTTY;
|
||||
@ -3051,6 +3152,11 @@ static void mtip_make_request(struct request_queue *queue, struct bio *bio)
|
||||
int nents = 0;
|
||||
int tag = 0;
|
||||
|
||||
if (test_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT, &dd->dd_flag)) {
|
||||
bio_endio(bio, -ENXIO);
|
||||
return;
|
||||
}
|
||||
|
||||
if (unlikely(!bio_has_data(bio))) {
|
||||
blk_queue_flush(queue, 0);
|
||||
bio_endio(bio, 0);
|
||||
@ -3063,7 +3169,7 @@ static void mtip_make_request(struct request_queue *queue, struct bio *bio)
|
||||
|
||||
if (unlikely((bio)->bi_vcnt > MTIP_MAX_SG)) {
|
||||
dev_warn(&dd->pdev->dev,
|
||||
"Maximum number of SGL entries exceeded");
|
||||
"Maximum number of SGL entries exceeded\n");
|
||||
bio_io_error(bio);
|
||||
mtip_hw_release_scatterlist(dd, tag);
|
||||
return;
|
||||
@ -3212,8 +3318,10 @@ skip_create_disk:
|
||||
kobject_put(kobj);
|
||||
}
|
||||
|
||||
if (dd->mtip_svc_handler)
|
||||
if (dd->mtip_svc_handler) {
|
||||
set_bit(MTIP_DD_FLAG_INIT_DONE_BIT, &dd->dd_flag);
|
||||
return rv; /* service thread created for handling rebuild */
|
||||
}
|
||||
|
||||
start_service_thread:
|
||||
sprintf(thd_name, "mtip_svc_thd_%02d", index);
|
||||
@ -3228,6 +3336,9 @@ start_service_thread:
|
||||
goto kthread_run_error;
|
||||
}
|
||||
|
||||
if (wait_for_rebuild == MTIP_FTL_REBUILD_MAGIC)
|
||||
rv = wait_for_rebuild;
|
||||
|
||||
return rv;
|
||||
|
||||
kthread_run_error:
|
||||
@ -3274,10 +3385,12 @@ static int mtip_block_remove(struct driver_data *dd)
|
||||
}
|
||||
|
||||
/* Clean up the sysfs attributes managed by the protocol layer. */
|
||||
kobj = kobject_get(&disk_to_dev(dd->disk)->kobj);
|
||||
if (kobj) {
|
||||
mtip_hw_sysfs_exit(dd, kobj);
|
||||
kobject_put(kobj);
|
||||
if (test_bit(MTIP_DD_FLAG_INIT_DONE_BIT, &dd->dd_flag)) {
|
||||
kobj = kobject_get(&disk_to_dev(dd->disk)->kobj);
|
||||
if (kobj) {
|
||||
mtip_hw_sysfs_exit(dd, kobj);
|
||||
kobject_put(kobj);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
@ -3361,8 +3474,6 @@ static int mtip_pci_probe(struct pci_dev *pdev,
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
atomic_set(&dd->resumeflag, false);
|
||||
|
||||
/* Attach the private data to this PCI device. */
|
||||
pci_set_drvdata(pdev, dd);
|
||||
|
||||
@ -3419,7 +3530,8 @@ static int mtip_pci_probe(struct pci_dev *pdev,
|
||||
* instance number.
|
||||
*/
|
||||
instance++;
|
||||
|
||||
if (rv != MTIP_FTL_REBUILD_MAGIC)
|
||||
set_bit(MTIP_DD_FLAG_INIT_DONE_BIT, &dd->dd_flag);
|
||||
goto done;
|
||||
|
||||
block_initialize_err:
|
||||
@ -3433,9 +3545,6 @@ iomap_err:
|
||||
pci_set_drvdata(pdev, NULL);
|
||||
return rv;
|
||||
done:
|
||||
/* Set the atomic variable as 0 */
|
||||
atomic_set(&dd->drv_cleanup_done, false);
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
@ -3451,8 +3560,10 @@ static void mtip_pci_remove(struct pci_dev *pdev)
|
||||
struct driver_data *dd = pci_get_drvdata(pdev);
|
||||
int counter = 0;
|
||||
|
||||
set_bit(MTIP_DD_FLAG_REMOVE_PENDING_BIT, &dd->dd_flag);
|
||||
|
||||
if (mtip_check_surprise_removal(pdev)) {
|
||||
while (atomic_read(&dd->drv_cleanup_done) == false) {
|
||||
while (!test_bit(MTIP_DD_FLAG_CLEANUP_BIT, &dd->dd_flag)) {
|
||||
counter++;
|
||||
msleep(20);
|
||||
if (counter == 10) {
|
||||
@ -3490,7 +3601,7 @@ static int mtip_pci_suspend(struct pci_dev *pdev, pm_message_t mesg)
|
||||
return -EFAULT;
|
||||
}
|
||||
|
||||
atomic_set(&dd->resumeflag, true);
|
||||
set_bit(MTIP_DD_FLAG_RESUME_BIT, &dd->dd_flag);
|
||||
|
||||
/* Disable ports & interrupts then send standby immediate */
|
||||
rv = mtip_block_suspend(dd);
|
||||
@ -3556,7 +3667,7 @@ static int mtip_pci_resume(struct pci_dev *pdev)
|
||||
dev_err(&pdev->dev, "Unable to resume\n");
|
||||
|
||||
err:
|
||||
atomic_set(&dd->resumeflag, false);
|
||||
clear_bit(MTIP_DD_FLAG_RESUME_BIT, &dd->dd_flag);
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
@ -121,6 +121,12 @@
|
||||
#define MTIP_FLAG_REBUILD_BIT 5
|
||||
#define MTIP_FLAG_SVC_THD_SHOULD_STOP_BIT 8
|
||||
|
||||
/* below are bit numbers in 'dd_flag' defined in driver_data */
|
||||
#define MTIP_DD_FLAG_REMOVE_PENDING_BIT 1
|
||||
#define MTIP_DD_FLAG_RESUME_BIT 2
|
||||
#define MTIP_DD_FLAG_CLEANUP_BIT 3
|
||||
#define MTIP_DD_FLAG_INIT_DONE_BIT 4
|
||||
|
||||
/* Register Frame Information Structure (FIS), host to device. */
|
||||
struct host_to_dev_fis {
|
||||
/*
|
||||
@ -404,13 +410,9 @@ struct driver_data {
|
||||
|
||||
unsigned slot_groups; /* number of slot groups the product supports */
|
||||
|
||||
atomic_t drv_cleanup_done; /* Atomic variable for SRSI */
|
||||
|
||||
unsigned long index; /* Index to determine the disk name */
|
||||
|
||||
unsigned int ftlrebuildflag; /* FTL rebuild flag */
|
||||
|
||||
atomic_t resumeflag; /* Atomic variable to track suspend/resume */
|
||||
unsigned long dd_flag; /* NOTE: use atomic bit operations on this */
|
||||
|
||||
struct task_struct *mtip_svc_handler; /* task_struct of svc thd */
|
||||
};
|
||||
|
||||
Loading…
Reference in New Issue
Block a user