Release 4.11 drivers/scsi/csiostor/csio_hw.h
/*
* This file is part of the Chelsio FCoE driver for Linux.
*
* Copyright (c) 2008-2012 Chelsio Communications, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __CSIO_HW_H__
#define __CSIO_HW_H__
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/device.h>
#include <linux/workqueue.h>
#include <linux/compiler.h>
#include <linux/cdev.h>
#include <linux/list.h>
#include <linux/mempool.h>
#include <linux/io.h>
#include <linux/spinlock_types.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_transport_fc.h>
#include "t4_hw.h"
#include "csio_hw_chip.h"
#include "csio_wr.h"
#include "csio_mb.h"
#include "csio_scsi.h"
#include "csio_defs.h"
#include "t4_regs.h"
#include "t4_msg.h"
/*
* An error value used by host. Should not clash with FW defined return values.
*/
#define FW_HOSTERROR 255
#define CSIO_HW_NAME "Chelsio FCoE Adapter"
#define CSIO_MAX_PFN 8
#define CSIO_MAX_PPORTS 4
#define CSIO_MAX_LUN 0xFFFF
#define CSIO_MAX_QUEUE 2048
#define CSIO_MAX_CMD_PER_LUN 32
#define CSIO_MAX_DDP_BUF_SIZE (1024 * 1024)
#define CSIO_MAX_SECTOR_SIZE 128
/* Interrupts */
#define CSIO_EXTRA_MSI_IQS 2
/* Extra iqs for INTX/MSI mode
* (Forward intr iq + fw iq) */
#define CSIO_EXTRA_VECS 2
/* non-data + FW evt */
#define CSIO_MAX_SCSI_CPU 128
#define CSIO_MAX_SCSI_QSETS (CSIO_MAX_SCSI_CPU * CSIO_MAX_PPORTS)
#define CSIO_MAX_MSIX_VECS (CSIO_MAX_SCSI_QSETS + CSIO_EXTRA_VECS)
/* Queues */
enum {
CSIO_INTR_WRSIZE = 128,
CSIO_INTR_IQSIZE = ((CSIO_MAX_MSIX_VECS + 1) * CSIO_INTR_WRSIZE),
CSIO_FWEVT_WRSIZE = 128,
CSIO_FWEVT_IQLEN = 128,
CSIO_FWEVT_FLBUFS = 64,
CSIO_FWEVT_IQSIZE = (CSIO_FWEVT_WRSIZE * CSIO_FWEVT_IQLEN),
CSIO_HW_NIQ = 1,
CSIO_HW_NFLQ = 1,
CSIO_HW_NEQ = 1,
CSIO_HW_NINTXQ = 1,
};
struct csio_msix_entries {
unsigned short vector; /* Assigned MSI-X vector */
void *dev_id; /* Priv object associated w/ this msix*/
char desc[24]; /* Description of this vector */
};
struct csio_scsi_qset {
int iq_idx; /* Ingress index */
int eq_idx; /* Egress index */
uint32_t intr_idx; /* MSIX Vector index */
};
struct csio_scsi_cpu_info {
int16_t max_cpus;
};
extern int csio_dbg_level;
extern unsigned int csio_port_mask;
extern int csio_msi;
#define CSIO_VENDOR_ID 0x1425
#define CSIO_ASIC_DEVID_PROTO_MASK 0xFF00
#define CSIO_ASIC_DEVID_TYPE_MASK 0x00FF
#define CSIO_GLBL_INTR_MASK (CIM_F | MPS_F | PL_F | PCIE_F | MC_F | \
EDC0_F | EDC1_F | LE_F | TP_F | MA_F | \
PM_TX_F | PM_RX_F | ULP_RX_F | \
CPL_SWITCH_F | SGE_F | ULP_TX_F | SF_F)
/*
* Hard parameters used to initialize the card in the absence of a
* configuration file.
*/
enum {
/* General */
CSIO_SGE_DBFIFO_INT_THRESH = 10,
CSIO_SGE_RX_DMA_OFFSET = 2,
CSIO_SGE_FLBUF_SIZE1 = 65536,
CSIO_SGE_FLBUF_SIZE2 = 1536,
CSIO_SGE_FLBUF_SIZE3 = 9024,
CSIO_SGE_FLBUF_SIZE4 = 9216,
CSIO_SGE_FLBUF_SIZE5 = 2048,
CSIO_SGE_FLBUF_SIZE6 = 128,
CSIO_SGE_FLBUF_SIZE7 = 8192,
CSIO_SGE_FLBUF_SIZE8 = 16384,
CSIO_SGE_TIMER_VAL_0 = 5,
CSIO_SGE_TIMER_VAL_1 = 10,
CSIO_SGE_TIMER_VAL_2 = 20,
CSIO_SGE_TIMER_VAL_3 = 50,
CSIO_SGE_TIMER_VAL_4 = 100,
CSIO_SGE_TIMER_VAL_5 = 200,
CSIO_SGE_INT_CNT_VAL_0 = 1,
CSIO_SGE_INT_CNT_VAL_1 = 4,
CSIO_SGE_INT_CNT_VAL_2 = 8,
CSIO_SGE_INT_CNT_VAL_3 = 16,
};
/* Slowpath events */
enum csio_evt {
CSIO_EVT_FW = 0, /* FW event */
CSIO_EVT_MBX, /* MBX event */
CSIO_EVT_SCN, /* State change notification */
CSIO_EVT_DEV_LOSS, /* Device loss event */
CSIO_EVT_MAX, /* Max supported event */
};
#define CSIO_EVT_MSG_SIZE 512
#define CSIO_EVTQ_SIZE 512
/* Event msg */
struct csio_evt_msg {
struct list_head list; /* evt queue*/
enum csio_evt type;
uint8_t data[CSIO_EVT_MSG_SIZE];
};
enum {
SERNUM_LEN = 16, /* Serial # length */
EC_LEN = 16, /* E/C length */
ID_LEN = 16, /* ID length */
};
enum {
SF_SIZE = SF_SEC_SIZE * 16, /* serial flash size */
};
/* serial flash and firmware constants */
enum {
SF_ATTEMPTS = 10, /* max retries for SF operations */
/* flash command opcodes */
SF_PROG_PAGE = 2, /* program page */
SF_WR_DISABLE = 4, /* disable writes */
SF_RD_STATUS = 5, /* read status register */
SF_WR_ENABLE = 6, /* enable writes */
SF_RD_DATA_FAST = 0xb, /* read flash */
SF_RD_ID = 0x9f, /* read ID */
SF_ERASE_SECTOR = 0xd8, /* erase sector */
};
/* Management module */
enum {
CSIO_MGMT_EQ_WRSIZE = 512,
CSIO_MGMT_IQ_WRSIZE = 128,
CSIO_MGMT_EQLEN = 64,
CSIO_MGMT_IQLEN = 64,
};
#define CSIO_MGMT_EQSIZE (CSIO_MGMT_EQLEN * CSIO_MGMT_EQ_WRSIZE)
#define CSIO_MGMT_IQSIZE (CSIO_MGMT_IQLEN * CSIO_MGMT_IQ_WRSIZE)
/* mgmt module stats */
struct csio_mgmtm_stats {
uint32_t n_abort_req; /* Total abort request */
uint32_t n_abort_rsp; /* Total abort response */
uint32_t n_close_req; /* Total close request */
uint32_t n_close_rsp; /* Total close response */
uint32_t n_err; /* Total Errors */
uint32_t n_drop; /* Total request dropped */
uint32_t n_active; /* Count of active_q */
uint32_t n_cbfn; /* Count of cbfn_q */
};
/* MGMT module */
struct csio_mgmtm {
struct csio_hw *hw; /* Pointer to HW moduel */
int eq_idx; /* Egress queue index */
int iq_idx; /* Ingress queue index */
int msi_vec; /* MSI vector */
struct list_head active_q; /* Outstanding ELS/CT */
struct list_head abort_q; /* Outstanding abort req */
struct list_head cbfn_q; /* Completion queue */
struct list_head mgmt_req_freelist; /* Free poll of reqs */
/* ELSCT request freelist*/
struct timer_list mgmt_timer; /* MGMT timer */
struct csio_mgmtm_stats stats; /* ELS/CT stats */
};
struct csio_adap_desc {
char model_no[16];
char description[32];
};
struct pci_params {
uint16_t vendor_id;
uint16_t device_id;
int vpd_cap_addr;
uint16_t speed;
uint8_t width;
};
/* User configurable hw parameters */
struct csio_hw_params {
uint32_t sf_size; /* serial flash
* size in bytes
*/
uint32_t sf_nsec; /* # of flash sectors */
struct pci_params pci;
uint32_t log_level; /* Module-level for
* debug log.
*/
};
struct csio_vpd {
uint32_t cclk;
uint8_t ec[EC_LEN + 1];
uint8_t sn[SERNUM_LEN + 1];
uint8_t id[ID_LEN + 1];
};
struct csio_pport {
uint16_t pcap;
uint8_t portid;
uint8_t link_status;
uint16_t link_speed;
uint8_t mac[6];
uint8_t mod_type;
uint8_t rsvd1;
uint8_t rsvd2;
uint8_t rsvd3;
};
/* fcoe resource information */
struct csio_fcoe_res_info {
uint16_t e_d_tov;
uint16_t r_a_tov_seq;
uint16_t r_a_tov_els;
uint16_t r_r_tov;
uint32_t max_xchgs;
uint32_t max_ssns;
uint32_t used_xchgs;
uint32_t used_ssns;
uint32_t max_fcfs;
uint32_t max_vnps;
uint32_t used_fcfs;
uint32_t used_vnps;
};
/* HW State machine Events */
enum csio_hw_ev {
CSIO_HWE_CFG = (uint32_t)1, /* Starts off the State machine */
CSIO_HWE_INIT, /* Config done, start Init */
CSIO_HWE_INIT_DONE, /* Init Mailboxes sent, HW ready */
CSIO_HWE_FATAL, /* Fatal error during initialization */
CSIO_HWE_PCIERR_DETECTED,/* PCI error recovery detetced */
CSIO_HWE_PCIERR_SLOT_RESET, /* Slot reset after PCI recoviery */
CSIO_HWE_PCIERR_RESUME, /* Resume after PCI error recovery */
CSIO_HWE_QUIESCED, /* HBA quiesced */
CSIO_HWE_HBA_RESET, /* HBA reset requested */
CSIO_HWE_HBA_RESET_DONE, /* HBA reset completed */
CSIO_HWE_FW_DLOAD, /* FW download requested */
CSIO_HWE_PCI_REMOVE, /* PCI de-instantiation */
CSIO_HWE_SUSPEND, /* HW suspend for Online(hot) replacement */
CSIO_HWE_RESUME, /* HW resume for Online(hot) replacement */
CSIO_HWE_MAX, /* Max HW event */
};
/* hw stats */
struct csio_hw_stats {
uint32_t n_evt_activeq; /* Number of event in active Q */
uint32_t n_evt_freeq; /* Number of event in free Q */
uint32_t n_evt_drop; /* Number of event droped */
uint32_t n_evt_unexp; /* Number of unexpected events */
uint32_t n_pcich_offline;/* Number of pci channel offline */
uint32_t n_lnlkup_miss; /* Number of lnode lookup miss */
uint32_t n_cpl_fw6_msg; /* Number of cpl fw6 message*/
uint32_t n_cpl_fw6_pld; /* Number of cpl fw6 payload*/
uint32_t n_cpl_unexp; /* Number of unexpected cpl */
uint32_t n_mbint_unexp; /* Number of unexpected mbox */
/* interrupt */
uint32_t n_plint_unexp; /* Number of unexpected PL */
/* interrupt */
uint32_t n_plint_cnt; /* Number of PL interrupt */
uint32_t n_int_stray; /* Number of stray interrupt */
uint32_t n_err; /* Number of hw errors */
uint32_t n_err_fatal; /* Number of fatal errors */
uint32_t n_err_nomem; /* Number of memory alloc failure */
uint32_t n_err_io; /* Number of IO failure */
enum csio_hw_ev n_evt_sm[CSIO_HWE_MAX]; /* Number of sm events */
uint64_t n_reset_start; /* Start time after the reset */
uint32_t rsvd1;
};
/* Defines for hw->flags */
#define CSIO_HWF_MASTER 0x00000001
/* This is the Master
* function for the
* card.
*/
#define CSIO_HWF_HW_INTR_ENABLED 0x00000002
/* Are HW Interrupt
* enable bit set?
*/
#define CSIO_HWF_FWEVT_PENDING 0x00000004
/* FW events pending */
#define CSIO_HWF_Q_MEM_ALLOCED 0x00000008
/* Queues have been
* allocated memory.
*/
#define CSIO_HWF_Q_FW_ALLOCED 0x00000010
/* Queues have been
* allocated in FW.
*/
#define CSIO_HWF_VPD_VALID 0x00000020
/* Valid VPD copied */
#define CSIO_HWF_DEVID_CACHED 0X00000040
/* PCI vendor & device
* id cached */
#define CSIO_HWF_FWEVT_STOP 0x00000080
/* Stop processing
* FW events
*/
#define CSIO_HWF_USING_SOFT_PARAMS 0x00000100
/* Using FW config
* params
*/
#define CSIO_HWF_HOST_INTR_ENABLED 0x00000200
/* Are host interrupts
* enabled?
*/
#define csio_is_hw_intr_enabled(__hw) \
((__hw)->flags & CSIO_HWF_HW_INTR_ENABLED)
#define csio_is_host_intr_enabled(__hw) \
((__hw)->flags & CSIO_HWF_HOST_INTR_ENABLED)
#define csio_is_hw_master(__hw) ((__hw)->flags & CSIO_HWF_MASTER)
#define csio_is_valid_vpd(__hw) ((__hw)->flags & CSIO_HWF_VPD_VALID)
#define csio_is_dev_id_cached(__hw) ((__hw)->flags & CSIO_HWF_DEVID_CACHED)
#define csio_valid_vpd_copied(__hw) ((__hw)->flags |= CSIO_HWF_VPD_VALID)
#define csio_dev_id_cached(__hw) ((__hw)->flags |= CSIO_HWF_DEVID_CACHED)
/* Defines for intr_mode */
enum csio_intr_mode {
CSIO_IM_NONE = 0,
CSIO_IM_INTX = 1,
CSIO_IM_MSI = 2,
CSIO_IM_MSIX = 3,
};
/* Master HW structure: One per function */
struct csio_hw {
struct csio_sm sm; /* State machine: should
* be the 1st member.
*/
spinlock_t lock; /* Lock for hw */
struct csio_scsim scsim; /* SCSI module*/
struct csio_wrm wrm; /* Work request module*/
struct pci_dev *pdev; /* PCI device */
void __iomem *regstart; /* Virtual address of
* register map
*/
/* SCSI queue sets */
uint32_t num_sqsets; /* Number of SCSI
* queue sets */
uint32_t num_scsi_msix_cpus; /* Number of CPUs that
* will be used
* for ingress
* processing.
*/
struct csio_scsi_qset sqset[CSIO_MAX_PPORTS][CSIO_MAX_SCSI_CPU];
struct csio_scsi_cpu_info scsi_cpu_info[CSIO_MAX_PPORTS];
uint32_t evtflag; /* Event flag */
uint32_t flags; /* HW flags */
struct csio_mgmtm mgmtm; /* management module */
struct csio_mbm mbm; /* Mailbox module */
/* Lnodes */
uint32_t num_lns; /* Number of lnodes */
struct csio_lnode *rln; /* Root lnode */
struct list_head sln_head; /* Sibling node list
* list
*/
int intr_iq_idx; /* Forward interrupt
* queue.
*/
int fwevt_iq_idx; /* FW evt queue */
struct work_struct evtq_work; /* Worker thread for
* HW events.
*/
struct list_head evt_free_q; /* freelist of evt
* elements
*/
struct list_head evt_active_q; /* active evt queue*/
/* board related info */
char name[32];
char hw_ver[16];
char model_desc[32];
char drv_version[32];
char fwrev_str[32];
uint32_t optrom_ver;
uint32_t fwrev;
uint32_t tp_vers;
char chip_ver;
uint16_t chip_id; /* Tells T4/T5 chip */
enum csio_dev_state fw_state;
struct csio_vpd vpd;
uint8_t pfn; /* Physical Function
* number
*/
uint32_t port_vec; /* Port vector */
uint8_t num_pports; /* Number of physical
* ports.
*/
uint8_t rst_retries; /* Reset retries */
uint8_t cur_evt; /* current s/m evt */
uint8_t prev_evt; /* Previous s/m evt */
uint32_t dev_num; /* device number */
struct csio_pport pport[CSIO_MAX_PPORTS]; /* Ports (XGMACs) */
struct csio_hw_params params; /* Hw parameters */
struct pci_pool *scsi_pci_pool; /* PCI pool for SCSI */
mempool_t *mb_mempool; /* Mailbox memory pool*/
mempool_t *rnode_mempool; /* rnode memory pool */
/* Interrupt */
enum csio_intr_mode intr_mode; /* INTx, MSI, MSIX */
uint32_t fwevt_intr_idx; /* FW evt MSIX/interrupt
* index
*/
uint32_t nondata_intr_idx; /* nondata MSIX/intr
* idx
*/
uint8_t cfg_neq; /* FW configured no of
* egress queues
*/
uint8_t cfg_niq; /* FW configured no of
* iq queues.
*/
struct csio_fcoe_res_info fres_info; /* Fcoe resource info */
struct csio_hw_chip_ops *chip_ops; /* T4/T5 Chip specific
* Operations
*/
/* MSIX vectors */
struct csio_msix_entries msix_entries[CSIO_MAX_MSIX_VECS];
struct dentry *debugfs_root; /* Debug FS */
struct csio_hw_stats stats; /* Hw statistics */
};
/* Register access macros */
#define csio_reg(_b, _r) ((_b) + (_r))
#define csio_rd_reg8(_h, _r) readb(csio_reg((_h)->regstart, (_r)))
#define csio_rd_reg16(_h, _r) readw(csio_reg((_h)->regstart, (_r)))
#define csio_rd_reg32(_h, _r) readl(csio_reg((_h)->regstart, (_r)))
#define csio_rd_reg64(_h, _r) readq(csio_reg((_h)->regstart, (_r)))
#define csio_wr_reg8(_h, _v, _r) writeb((_v), \
csio_reg((_h)->regstart, (_r)))
#define csio_wr_reg16(_h, _v, _r) writew((_v), \
csio_reg((_h)->regstart, (_r)))
#define csio_wr_reg32(_h, _v, _r) writel((_v), \
csio_reg((_h)->regstart, (_r)))
#define csio_wr_reg64(_h, _v, _r) writeq((_v), \
csio_reg((_h)->regstart, (_r)))
void csio_set_reg_field(struct csio_hw *, uint32_t, uint32_t, uint32_t);
/* Core clocks <==> uSecs */
static inline uint32_t
csio_core_ticks_to_us(struct csio_hw *hw, uint32_t ticks)
{
/* add Core Clock / 2 to round ticks to nearest uS */
return (ticks * 1000 + hw->vpd.cclk/2) / hw->vpd.cclk;
}
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static inline uint32_t
csio_us_to_core_ticks(struct csio_hw *hw, uint32_t us)
{
return (us * hw->vpd.cclk) / 1000;
}
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/* Easy access macros */
#define csio_hw_to_wrm(hw) ((struct csio_wrm *)(&(hw)->wrm))
#define csio_hw_to_mbm(hw) ((struct csio_mbm *)(&(hw)->mbm))
#define csio_hw_to_scsim(hw) ((struct csio_scsim *)(&(hw)->scsim))
#define csio_hw_to_mgmtm(hw) ((struct csio_mgmtm *)(&(hw)->mgmtm))
#define CSIO_PCI_BUS(hw) ((hw)->pdev->bus->number)
#define CSIO_PCI_DEV(hw) (PCI_SLOT((hw)->pdev->devfn))
#define CSIO_PCI_FUNC(hw) (PCI_FUNC((hw)->pdev->devfn))
#define csio_set_fwevt_intr_idx(_h, _i) ((_h)->fwevt_intr_idx = (_i))
#define csio_get_fwevt_intr_idx(_h) ((_h)->fwevt_intr_idx)
#define csio_set_nondata_intr_idx(_h, _i) ((_h)->nondata_intr_idx = (_i))
#define csio_get_nondata_intr_idx(_h) ((_h)->nondata_intr_idx)
/* Printing/logging */
#define CSIO_DEVID(__dev) ((__dev)->dev_num)
#define CSIO_DEVID_LO(__dev) (CSIO_DEVID((__dev)) & 0xFFFF)
#define CSIO_DEVID_HI(__dev) ((CSIO_DEVID((__dev)) >> 16) & 0xFFFF)
#define csio_info(__hw, __fmt, ...) \
dev_info(&(__hw)->pdev->dev, __fmt, ##__VA_ARGS__)
#define csio_fatal(__hw, __fmt, ...) \
dev_crit(&(__hw)->pdev->dev, __fmt, ##__VA_ARGS__)
#define csio_err(__hw, __fmt, ...) \
dev_err(&(__hw)->pdev->dev, __fmt, ##__VA_ARGS__)
#define csio_warn(__hw, __fmt, ...) \
dev_warn(&(__hw)->pdev->dev, __fmt, ##__VA_ARGS__)
#ifdef __CSIO_DEBUG__
#define csio_dbg(__hw, __fmt, ...) \
csio_info((__hw), __fmt, ##__VA_ARGS__);
#else
#define csio_dbg(__hw, __fmt, ...)
#endif
int csio_hw_wait_op_done_val(struct csio_hw *, int, uint32_t, int,
int, int, uint32_t *);
void csio_hw_tp_wr_bits_indirect(struct csio_hw *, unsigned int,
unsigned int, unsigned int);
int csio_mgmt_req_lookup(struct csio_mgmtm *, struct csio_ioreq *);
void csio_hw_intr_disable(struct csio_hw *);
int csio_hw_slow_intr_handler(struct csio_hw *);
int csio_handle_intr_status(struct csio_hw *, unsigned int,
const struct intr_info *);
int csio_hw_start(struct csio_hw *);
int csio_hw_stop(struct csio_hw *);
int csio_hw_reset(struct csio_hw *);
int csio_is_hw_ready(struct csio_hw *);
int csio_is_hw_removing(struct csio_hw *);
int csio_fwevtq_handler(struct csio_hw *);
void csio_evtq_worker(struct work_struct *);
int csio_enqueue_evt(struct csio_hw *, enum csio_evt, void *, uint16_t);
void csio_evtq_flush(struct csio_hw *hw);
int csio_request_irqs(struct csio_hw *);
void csio_intr_enable(struct csio_hw *);
void csio_intr_disable(struct csio_hw *, bool);
void csio_hw_fatal_err(struct csio_hw *);
struct csio_lnode *csio_lnode_alloc(struct csio_hw *);
int csio_config_queues(struct csio_hw *);
int csio_hw_init(struct csio_hw *);
void csio_hw_exit(struct csio_hw *);
#endif /* ifndef __CSIO_HW_H__ */
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