mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-16 19:16:53 +07:00
e85c597469
Dial back the aggressiveness of the controller lockup detection thread. Currently it will declare the controller to be locked up if it goes for 10 seconds with no interrupts and no change in the heartbeat register. Dial back this to 30 seconds with no heartbeat change, and also snoop the ioctl path and if a firmware flash command is detected, dial it back further to 4 minutes until the firmware flash command completes. The reason for this is that during the firmware flash operation, the controller apparently doesn't update the heartbeat register as frequently as it is supposed to, and we can get a false positive. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
409 lines
12 KiB
C
409 lines
12 KiB
C
/*
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* Disk Array driver for HP Smart Array SAS controllers
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* Copyright 2000, 2009 Hewlett-Packard Development Company, L.P.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Questions/Comments/Bugfixes to iss_storagedev@hp.com
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*
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*/
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#ifndef HPSA_H
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#define HPSA_H
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#include <scsi/scsicam.h>
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#define IO_OK 0
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#define IO_ERROR 1
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struct ctlr_info;
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struct access_method {
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void (*submit_command)(struct ctlr_info *h,
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struct CommandList *c);
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void (*set_intr_mask)(struct ctlr_info *h, unsigned long val);
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unsigned long (*fifo_full)(struct ctlr_info *h);
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bool (*intr_pending)(struct ctlr_info *h);
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unsigned long (*command_completed)(struct ctlr_info *h, u8 q);
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};
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struct hpsa_scsi_dev_t {
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int devtype;
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int bus, target, lun; /* as presented to the OS */
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unsigned char scsi3addr[8]; /* as presented to the HW */
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#define RAID_CTLR_LUNID "\0\0\0\0\0\0\0\0"
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unsigned char device_id[16]; /* from inquiry pg. 0x83 */
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unsigned char vendor[8]; /* bytes 8-15 of inquiry data */
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unsigned char model[16]; /* bytes 16-31 of inquiry data */
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unsigned char raid_level; /* from inquiry page 0xC1 */
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};
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struct reply_pool {
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u64 *head;
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size_t size;
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u8 wraparound;
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u32 current_entry;
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};
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struct ctlr_info {
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int ctlr;
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char devname[8];
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char *product_name;
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struct pci_dev *pdev;
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u32 board_id;
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void __iomem *vaddr;
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unsigned long paddr;
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int nr_cmds; /* Number of commands allowed on this controller */
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struct CfgTable __iomem *cfgtable;
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int interrupts_enabled;
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int major;
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int max_commands;
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int commands_outstanding;
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int max_outstanding; /* Debug */
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int usage_count; /* number of opens all all minor devices */
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# define PERF_MODE_INT 0
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# define DOORBELL_INT 1
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# define SIMPLE_MODE_INT 2
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# define MEMQ_MODE_INT 3
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unsigned int intr[MAX_REPLY_QUEUES];
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unsigned int msix_vector;
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unsigned int msi_vector;
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int intr_mode; /* either PERF_MODE_INT or SIMPLE_MODE_INT */
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struct access_method access;
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/* queue and queue Info */
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struct list_head reqQ;
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struct list_head cmpQ;
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unsigned int Qdepth;
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unsigned int maxSG;
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spinlock_t lock;
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int maxsgentries;
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u8 max_cmd_sg_entries;
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int chainsize;
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struct SGDescriptor **cmd_sg_list;
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/* pointers to command and error info pool */
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struct CommandList *cmd_pool;
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dma_addr_t cmd_pool_dhandle;
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struct ErrorInfo *errinfo_pool;
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dma_addr_t errinfo_pool_dhandle;
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unsigned long *cmd_pool_bits;
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int nr_allocs;
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int nr_frees;
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int scan_finished;
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spinlock_t scan_lock;
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wait_queue_head_t scan_wait_queue;
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struct Scsi_Host *scsi_host;
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spinlock_t devlock; /* to protect hba[ctlr]->dev[]; */
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int ndevices; /* number of used elements in .dev[] array. */
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struct hpsa_scsi_dev_t *dev[HPSA_MAX_DEVICES];
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/*
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* Performant mode tables.
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*/
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u32 trans_support;
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u32 trans_offset;
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struct TransTable_struct *transtable;
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unsigned long transMethod;
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/*
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* Performant mode completion buffers
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*/
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u64 *reply_pool;
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size_t reply_pool_size;
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struct reply_pool reply_queue[MAX_REPLY_QUEUES];
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u8 nreply_queues;
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dma_addr_t reply_pool_dhandle;
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u32 *blockFetchTable;
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unsigned char *hba_inquiry_data;
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u64 last_intr_timestamp;
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u32 last_heartbeat;
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u64 last_heartbeat_timestamp;
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u32 heartbeat_sample_interval;
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atomic_t firmware_flash_in_progress;
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u32 lockup_detected;
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struct list_head lockup_list;
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/* Address of h->q[x] is passed to intr handler to know which queue */
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u8 q[MAX_REPLY_QUEUES];
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u32 TMFSupportFlags; /* cache what task mgmt funcs are supported. */
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#define HPSATMF_BITS_SUPPORTED (1 << 0)
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#define HPSATMF_PHYS_LUN_RESET (1 << 1)
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#define HPSATMF_PHYS_NEX_RESET (1 << 2)
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#define HPSATMF_PHYS_TASK_ABORT (1 << 3)
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#define HPSATMF_PHYS_TSET_ABORT (1 << 4)
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#define HPSATMF_PHYS_CLEAR_ACA (1 << 5)
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#define HPSATMF_PHYS_CLEAR_TSET (1 << 6)
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#define HPSATMF_PHYS_QRY_TASK (1 << 7)
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#define HPSATMF_PHYS_QRY_TSET (1 << 8)
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#define HPSATMF_PHYS_QRY_ASYNC (1 << 9)
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#define HPSATMF_MASK_SUPPORTED (1 << 16)
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#define HPSATMF_LOG_LUN_RESET (1 << 17)
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#define HPSATMF_LOG_NEX_RESET (1 << 18)
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#define HPSATMF_LOG_TASK_ABORT (1 << 19)
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#define HPSATMF_LOG_TSET_ABORT (1 << 20)
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#define HPSATMF_LOG_CLEAR_ACA (1 << 21)
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#define HPSATMF_LOG_CLEAR_TSET (1 << 22)
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#define HPSATMF_LOG_QRY_TASK (1 << 23)
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#define HPSATMF_LOG_QRY_TSET (1 << 24)
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#define HPSATMF_LOG_QRY_ASYNC (1 << 25)
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};
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#define HPSA_ABORT_MSG 0
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#define HPSA_DEVICE_RESET_MSG 1
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#define HPSA_RESET_TYPE_CONTROLLER 0x00
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#define HPSA_RESET_TYPE_BUS 0x01
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#define HPSA_RESET_TYPE_TARGET 0x03
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#define HPSA_RESET_TYPE_LUN 0x04
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#define HPSA_MSG_SEND_RETRY_LIMIT 10
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#define HPSA_MSG_SEND_RETRY_INTERVAL_MSECS (10000)
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/* Maximum time in seconds driver will wait for command completions
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* when polling before giving up.
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*/
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#define HPSA_MAX_POLL_TIME_SECS (20)
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/* During SCSI error recovery, HPSA_TUR_RETRY_LIMIT defines
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* how many times to retry TEST UNIT READY on a device
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* while waiting for it to become ready before giving up.
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* HPSA_MAX_WAIT_INTERVAL_SECS is the max wait interval
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* between sending TURs while waiting for a device
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* to become ready.
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*/
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#define HPSA_TUR_RETRY_LIMIT (20)
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#define HPSA_MAX_WAIT_INTERVAL_SECS (30)
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/* HPSA_BOARD_READY_WAIT_SECS is how long to wait for a board
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* to become ready, in seconds, before giving up on it.
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* HPSA_BOARD_READY_POLL_INTERVAL_MSECS * is how long to wait
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* between polling the board to see if it is ready, in
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* milliseconds. HPSA_BOARD_READY_POLL_INTERVAL and
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* HPSA_BOARD_READY_ITERATIONS are derived from those.
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*/
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#define HPSA_BOARD_READY_WAIT_SECS (120)
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#define HPSA_BOARD_NOT_READY_WAIT_SECS (100)
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#define HPSA_BOARD_READY_POLL_INTERVAL_MSECS (100)
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#define HPSA_BOARD_READY_POLL_INTERVAL \
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((HPSA_BOARD_READY_POLL_INTERVAL_MSECS * HZ) / 1000)
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#define HPSA_BOARD_READY_ITERATIONS \
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((HPSA_BOARD_READY_WAIT_SECS * 1000) / \
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HPSA_BOARD_READY_POLL_INTERVAL_MSECS)
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#define HPSA_BOARD_NOT_READY_ITERATIONS \
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((HPSA_BOARD_NOT_READY_WAIT_SECS * 1000) / \
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HPSA_BOARD_READY_POLL_INTERVAL_MSECS)
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#define HPSA_POST_RESET_PAUSE_MSECS (3000)
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#define HPSA_POST_RESET_NOOP_RETRIES (12)
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/* Defining the diffent access_menthods */
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/*
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* Memory mapped FIFO interface (SMART 53xx cards)
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*/
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#define SA5_DOORBELL 0x20
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#define SA5_REQUEST_PORT_OFFSET 0x40
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#define SA5_REPLY_INTR_MASK_OFFSET 0x34
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#define SA5_REPLY_PORT_OFFSET 0x44
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#define SA5_INTR_STATUS 0x30
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#define SA5_SCRATCHPAD_OFFSET 0xB0
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#define SA5_CTCFG_OFFSET 0xB4
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#define SA5_CTMEM_OFFSET 0xB8
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#define SA5_INTR_OFF 0x08
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#define SA5B_INTR_OFF 0x04
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#define SA5_INTR_PENDING 0x08
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#define SA5B_INTR_PENDING 0x04
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#define FIFO_EMPTY 0xffffffff
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#define HPSA_FIRMWARE_READY 0xffff0000 /* value in scratchpad register */
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#define HPSA_ERROR_BIT 0x02
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/* Performant mode flags */
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#define SA5_PERF_INTR_PENDING 0x04
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#define SA5_PERF_INTR_OFF 0x05
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#define SA5_OUTDB_STATUS_PERF_BIT 0x01
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#define SA5_OUTDB_CLEAR_PERF_BIT 0x01
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#define SA5_OUTDB_CLEAR 0xA0
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#define SA5_OUTDB_CLEAR_PERF_BIT 0x01
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#define SA5_OUTDB_STATUS 0x9C
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#define HPSA_INTR_ON 1
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#define HPSA_INTR_OFF 0
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/*
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Send the command to the hardware
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*/
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static void SA5_submit_command(struct ctlr_info *h,
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struct CommandList *c)
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{
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dev_dbg(&h->pdev->dev, "Sending %x, tag = %x\n", c->busaddr,
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c->Header.Tag.lower);
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writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
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(void) readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
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}
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/*
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* This card is the opposite of the other cards.
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* 0 turns interrupts on...
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* 0x08 turns them off...
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*/
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static void SA5_intr_mask(struct ctlr_info *h, unsigned long val)
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{
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if (val) { /* Turn interrupts on */
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h->interrupts_enabled = 1;
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writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
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(void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
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} else { /* Turn them off */
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h->interrupts_enabled = 0;
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writel(SA5_INTR_OFF,
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h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
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(void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
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}
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}
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static void SA5_performant_intr_mask(struct ctlr_info *h, unsigned long val)
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{
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if (val) { /* turn on interrupts */
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h->interrupts_enabled = 1;
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writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
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(void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
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} else {
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h->interrupts_enabled = 0;
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writel(SA5_PERF_INTR_OFF,
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h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
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(void) readl(h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
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}
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}
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static unsigned long SA5_performant_completed(struct ctlr_info *h, u8 q)
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{
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struct reply_pool *rq = &h->reply_queue[q];
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unsigned long flags, register_value = FIFO_EMPTY;
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/* msi auto clears the interrupt pending bit. */
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if (!(h->msi_vector || h->msix_vector)) {
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/* flush the controller write of the reply queue by reading
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* outbound doorbell status register.
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*/
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register_value = readl(h->vaddr + SA5_OUTDB_STATUS);
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writel(SA5_OUTDB_CLEAR_PERF_BIT, h->vaddr + SA5_OUTDB_CLEAR);
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/* Do a read in order to flush the write to the controller
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* (as per spec.)
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*/
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register_value = readl(h->vaddr + SA5_OUTDB_STATUS);
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}
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if ((rq->head[rq->current_entry] & 1) == rq->wraparound) {
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register_value = rq->head[rq->current_entry];
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rq->current_entry++;
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spin_lock_irqsave(&h->lock, flags);
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h->commands_outstanding--;
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spin_unlock_irqrestore(&h->lock, flags);
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} else {
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register_value = FIFO_EMPTY;
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}
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/* Check for wraparound */
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if (rq->current_entry == h->max_commands) {
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rq->current_entry = 0;
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rq->wraparound ^= 1;
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}
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return register_value;
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}
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/*
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* Returns true if fifo is full.
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*
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*/
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static unsigned long SA5_fifo_full(struct ctlr_info *h)
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{
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if (h->commands_outstanding >= h->max_commands)
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return 1;
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else
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return 0;
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}
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/*
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* returns value read from hardware.
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* returns FIFO_EMPTY if there is nothing to read
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*/
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static unsigned long SA5_completed(struct ctlr_info *h,
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__attribute__((unused)) u8 q)
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{
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unsigned long register_value
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= readl(h->vaddr + SA5_REPLY_PORT_OFFSET);
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unsigned long flags;
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if (register_value != FIFO_EMPTY) {
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spin_lock_irqsave(&h->lock, flags);
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h->commands_outstanding--;
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spin_unlock_irqrestore(&h->lock, flags);
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}
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#ifdef HPSA_DEBUG
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if (register_value != FIFO_EMPTY)
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dev_dbg(&h->pdev->dev, "Read %lx back from board\n",
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register_value);
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else
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dev_dbg(&h->pdev->dev, "FIFO Empty read\n");
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#endif
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return register_value;
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}
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/*
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* Returns true if an interrupt is pending..
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*/
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static bool SA5_intr_pending(struct ctlr_info *h)
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{
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unsigned long register_value =
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readl(h->vaddr + SA5_INTR_STATUS);
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dev_dbg(&h->pdev->dev, "intr_pending %lx\n", register_value);
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return register_value & SA5_INTR_PENDING;
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}
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static bool SA5_performant_intr_pending(struct ctlr_info *h)
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{
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unsigned long register_value = readl(h->vaddr + SA5_INTR_STATUS);
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if (!register_value)
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return false;
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if (h->msi_vector || h->msix_vector)
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return true;
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/* Read outbound doorbell to flush */
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register_value = readl(h->vaddr + SA5_OUTDB_STATUS);
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return register_value & SA5_OUTDB_STATUS_PERF_BIT;
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}
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static struct access_method SA5_access = {
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SA5_submit_command,
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SA5_intr_mask,
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SA5_fifo_full,
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SA5_intr_pending,
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SA5_completed,
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};
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static struct access_method SA5_performant_access = {
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SA5_submit_command,
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SA5_performant_intr_mask,
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SA5_fifo_full,
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SA5_performant_intr_pending,
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SA5_performant_completed,
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};
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struct board_type {
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u32 board_id;
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char *product_name;
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struct access_method *access;
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};
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#endif /* HPSA_H */
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