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linux/drivers/scsi/qlogicpti.h
Matthew Wilcox 9ec76fbf7d [SCSI] qlogicpti: Add a slave_configure method 
By configuring targets in slave_configure, we can eliminate a shadow
queuecommand, a shadow scsi_done, a write to the host template, abuse of
SCp->Message and SCp->Status, a use of kmap_atomic() and sniffing the
results of INQUIRY.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-12 14:52:38 -04:00

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C
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/* qlogicpti.h: Performance Technologies QlogicISP sbus card defines.
*
* Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu)
*/
#ifndef _QLOGICPTI_H
#define _QLOGICPTI_H
/* Qlogic/SBUS controller registers. */
#define SBUS_CFG1 0x006UL
#define SBUS_CTRL 0x008UL
#define SBUS_STAT 0x00aUL
#define SBUS_SEMAPHORE 0x00cUL
#define CMD_DMA_CTRL 0x022UL
#define DATA_DMA_CTRL 0x042UL
#define MBOX0 0x080UL
#define MBOX1 0x082UL
#define MBOX2 0x084UL
#define MBOX3 0x086UL
#define MBOX4 0x088UL
#define MBOX5 0x08aUL
#define CPU_CMD 0x214UL
#define CPU_ORIDE 0x224UL
#define CPU_PCTRL 0x272UL
#define CPU_PDIFF 0x276UL
#define RISC_PSR 0x420UL
#define RISC_MTREG 0x42EUL
#define HCCTRL 0x440UL
/* SCSI parameters for this driver. */
#define MAX_TARGETS 16
#define MAX_LUNS 8
/* With the qlogic interface, every queue slot can hold a SCSI
* command with up to 4 scatter/gather entries. If we need more
* than 4 entries, continuation entries can be used that hold
* another 7 entries each. Unlike for other drivers, this means
* that the maximum number of scatter/gather entries we can
* support at any given time is a function of the number of queue
* slots available. That is, host->can_queue and host->sg_tablesize
* are dynamic and _not_ independent. This all works fine because
* requests are queued serially and the scatter/gather limit is
* determined for each queue request anew.
*/
#define QLOGICPTI_REQ_QUEUE_LEN 255 /* must be power of two - 1 */
#define QLOGICPTI_MAX_SG(ql) (4 + ((ql) > 0) ? 7*((ql) - 1) : 0)
/* mailbox command complete status codes */
#define MBOX_COMMAND_COMPLETE 0x4000
#define INVALID_COMMAND 0x4001
#define HOST_INTERFACE_ERROR 0x4002
#define TEST_FAILED 0x4003
#define COMMAND_ERROR 0x4005
#define COMMAND_PARAM_ERROR 0x4006
/* async event status codes */
#define ASYNC_SCSI_BUS_RESET 0x8001
#define SYSTEM_ERROR 0x8002
#define REQUEST_TRANSFER_ERROR 0x8003
#define RESPONSE_TRANSFER_ERROR 0x8004
#define REQUEST_QUEUE_WAKEUP 0x8005
#define EXECUTION_TIMEOUT_RESET 0x8006
/* Am I fucking pedantic or what? */
struct Entry_header {
#ifdef __BIG_ENDIAN
u8 entry_cnt;
u8 entry_type;
u8 flags;
u8 sys_def_1;
#else /* __LITTLE_ENDIAN */
u8 entry_type;
u8 entry_cnt;
u8 sys_def_1;
u8 flags;
#endif
};
/* entry header type commands */
#define ENTRY_COMMAND 1
#define ENTRY_CONTINUATION 2
#define ENTRY_STATUS 3
#define ENTRY_MARKER 4
#define ENTRY_EXTENDED_COMMAND 5
/* entry header flag definitions */
#define EFLAG_CONTINUATION 1
#define EFLAG_BUSY 2
#define EFLAG_BAD_HEADER 4
#define EFLAG_BAD_PAYLOAD 8
struct dataseg {
u32 d_base;
u32 d_count;
};
struct Command_Entry {
struct Entry_header hdr;
u32 handle;
#ifdef __BIG_ENDIAN
u8 target_id;
u8 target_lun;
#else /* __LITTLE_ENDIAN */
u8 target_lun;
u8 target_id;
#endif
u16 cdb_length;
u16 control_flags;
u16 rsvd;
u16 time_out;
u16 segment_cnt;
u8 cdb[12];
struct dataseg dataseg[4];
};
/* command entry control flag definitions */
#define CFLAG_NODISC 0x01
#define CFLAG_HEAD_TAG 0x02
#define CFLAG_ORDERED_TAG 0x04
#define CFLAG_SIMPLE_TAG 0x08
#define CFLAG_TAR_RTN 0x10
#define CFLAG_READ 0x20
#define CFLAG_WRITE 0x40
struct Ext_Command_Entry {
struct Entry_header hdr;
u32 handle;
#ifdef __BIG_ENDIAN
u8 target_id;
u8 target_lun;
#else /* __LITTLE_ENDIAN */
u8 target_lun;
u8 target_id;
#endif
u16 cdb_length;
u16 control_flags;
u16 rsvd;
u16 time_out;
u16 segment_cnt;
u8 cdb[44];
};
struct Continuation_Entry {
struct Entry_header hdr;
u32 reserved;
struct dataseg dataseg[7];
};
struct Marker_Entry {
struct Entry_header hdr;
u32 reserved;
#ifdef __BIG_ENDIAN
u8 target_id;
u8 target_lun;
#else /* __LITTLE_ENDIAN */
u8 target_lun;
u8 target_id;
#endif
#ifdef __BIG_ENDIAN
u8 rsvd;
u8 modifier;
#else /* __LITTLE_ENDIAN */
u8 modifier;
u8 rsvd;
#endif
u8 rsvds[52];
};
/* marker entry modifier definitions */
#define SYNC_DEVICE 0
#define SYNC_TARGET 1
#define SYNC_ALL 2
struct Status_Entry {
struct Entry_header hdr;
u32 handle;
u16 scsi_status;
u16 completion_status;
u16 state_flags;
u16 status_flags;
u16 time;
u16 req_sense_len;
u32 residual;
u8 rsvd[8];
u8 req_sense_data[32];
};
/* status entry completion status definitions */
#define CS_COMPLETE 0x0000
#define CS_INCOMPLETE 0x0001
#define CS_DMA_ERROR 0x0002
#define CS_TRANSPORT_ERROR 0x0003
#define CS_RESET_OCCURRED 0x0004
#define CS_ABORTED 0x0005
#define CS_TIMEOUT 0x0006
#define CS_DATA_OVERRUN 0x0007
#define CS_COMMAND_OVERRUN 0x0008
#define CS_STATUS_OVERRUN 0x0009
#define CS_BAD_MESSAGE 0x000a
#define CS_NO_MESSAGE_OUT 0x000b
#define CS_EXT_ID_FAILED 0x000c
#define CS_IDE_MSG_FAILED 0x000d
#define CS_ABORT_MSG_FAILED 0x000e
#define CS_REJECT_MSG_FAILED 0x000f
#define CS_NOP_MSG_FAILED 0x0010
#define CS_PARITY_ERROR_MSG_FAILED 0x0011
#define CS_DEVICE_RESET_MSG_FAILED 0x0012
#define CS_ID_MSG_FAILED 0x0013
#define CS_UNEXP_BUS_FREE 0x0014
#define CS_DATA_UNDERRUN 0x0015
#define CS_BUS_RESET 0x001c
/* status entry state flag definitions */
#define SF_GOT_BUS 0x0100
#define SF_GOT_TARGET 0x0200
#define SF_SENT_CDB 0x0400
#define SF_TRANSFERRED_DATA 0x0800
#define SF_GOT_STATUS 0x1000
#define SF_GOT_SENSE 0x2000
/* status entry status flag definitions */
#define STF_DISCONNECT 0x0001
#define STF_SYNCHRONOUS 0x0002
#define STF_PARITY_ERROR 0x0004
#define STF_BUS_RESET 0x0008
#define STF_DEVICE_RESET 0x0010
#define STF_ABORTED 0x0020
#define STF_TIMEOUT 0x0040
#define STF_NEGOTIATION 0x0080
/* mailbox commands */
#define MBOX_NO_OP 0x0000
#define MBOX_LOAD_RAM 0x0001
#define MBOX_EXEC_FIRMWARE 0x0002
#define MBOX_DUMP_RAM 0x0003
#define MBOX_WRITE_RAM_WORD 0x0004
#define MBOX_READ_RAM_WORD 0x0005
#define MBOX_MAILBOX_REG_TEST 0x0006
#define MBOX_VERIFY_CHECKSUM 0x0007
#define MBOX_ABOUT_FIRMWARE 0x0008
#define MBOX_CHECK_FIRMWARE 0x000e
#define MBOX_INIT_REQ_QUEUE 0x0010
#define MBOX_INIT_RES_QUEUE 0x0011
#define MBOX_EXECUTE_IOCB 0x0012
#define MBOX_WAKE_UP 0x0013
#define MBOX_STOP_FIRMWARE 0x0014
#define MBOX_ABORT 0x0015
#define MBOX_ABORT_DEVICE 0x0016
#define MBOX_ABORT_TARGET 0x0017
#define MBOX_BUS_RESET 0x0018
#define MBOX_STOP_QUEUE 0x0019
#define MBOX_START_QUEUE 0x001a
#define MBOX_SINGLE_STEP_QUEUE 0x001b
#define MBOX_ABORT_QUEUE 0x001c
#define MBOX_GET_DEV_QUEUE_STATUS 0x001d
#define MBOX_GET_FIRMWARE_STATUS 0x001f
#define MBOX_GET_INIT_SCSI_ID 0x0020
#define MBOX_GET_SELECT_TIMEOUT 0x0021
#define MBOX_GET_RETRY_COUNT 0x0022
#define MBOX_GET_TAG_AGE_LIMIT 0x0023
#define MBOX_GET_CLOCK_RATE 0x0024
#define MBOX_GET_ACT_NEG_STATE 0x0025
#define MBOX_GET_ASYNC_DATA_SETUP_TIME 0x0026
#define MBOX_GET_SBUS_PARAMS 0x0027
#define MBOX_GET_TARGET_PARAMS 0x0028
#define MBOX_GET_DEV_QUEUE_PARAMS 0x0029
#define MBOX_SET_INIT_SCSI_ID 0x0030
#define MBOX_SET_SELECT_TIMEOUT 0x0031
#define MBOX_SET_RETRY_COUNT 0x0032
#define MBOX_SET_TAG_AGE_LIMIT 0x0033
#define MBOX_SET_CLOCK_RATE 0x0034
#define MBOX_SET_ACTIVE_NEG_STATE 0x0035
#define MBOX_SET_ASYNC_DATA_SETUP_TIME 0x0036
#define MBOX_SET_SBUS_CONTROL_PARAMS 0x0037
#define MBOX_SET_TARGET_PARAMS 0x0038
#define MBOX_SET_DEV_QUEUE_PARAMS 0x0039
struct host_param {
u_short initiator_scsi_id;
u_short bus_reset_delay;
u_short retry_count;
u_short retry_delay;
u_short async_data_setup_time;
u_short req_ack_active_negation;
u_short data_line_active_negation;
u_short data_dma_burst_enable;
u_short command_dma_burst_enable;
u_short tag_aging;
u_short selection_timeout;
u_short max_queue_depth;
};
/*
* Device Flags:
*
* Bit Name
* ---------
* 7 Disconnect Privilege
* 6 Parity Checking
* 5 Wide Data Transfers
* 4 Synchronous Data Transfers
* 3 Tagged Queuing
* 2 Automatic Request Sense
* 1 Stop Queue on Check Condition
* 0 Renegotiate on Error
*/
struct dev_param {
u_short device_flags;
u_short execution_throttle;
u_short synchronous_period;
u_short synchronous_offset;
u_short device_enable;
u_short reserved; /* pad */
};
/*
* The result queue can be quite a bit smaller since continuation entries
* do not show up there:
*/
#define RES_QUEUE_LEN 255 /* Must be power of two - 1 */
#define QUEUE_ENTRY_LEN 64
#define NEXT_REQ_PTR(wheee) (((wheee) + 1) & QLOGICPTI_REQ_QUEUE_LEN)
#define NEXT_RES_PTR(wheee) (((wheee) + 1) & RES_QUEUE_LEN)
#define PREV_REQ_PTR(wheee) (((wheee) - 1) & QLOGICPTI_REQ_QUEUE_LEN)
#define PREV_RES_PTR(wheee) (((wheee) - 1) & RES_QUEUE_LEN)
struct pti_queue_entry {
char __opaque[QUEUE_ENTRY_LEN];
};
struct scsi_cmnd;
/* Software state for the driver. */
struct qlogicpti {
/* These are the hot elements in the cache, so they come first. */
void __iomem *qregs; /* Adapter registers */
struct pti_queue_entry *res_cpu; /* Ptr to RESPONSE bufs (CPU) */
struct pti_queue_entry *req_cpu; /* Ptr to REQUEST bufs (CPU) */
u_int req_in_ptr; /* index of next request slot */
u_int res_out_ptr; /* index of next result slot */
long send_marker; /* must we send a marker? */
struct sbus_dev *sdev;
unsigned long __pad;
int cmd_count[MAX_TARGETS];
unsigned long tag_ages[MAX_TARGETS];
/* The cmd->handler is only 32-bits, so that things work even on monster
* Ex000 sparc64 machines with >4GB of ram we just keep track of the
* scsi command pointers here. This is essentially what Matt Jacob does. -DaveM
*/
struct scsi_cmnd *cmd_slots[QLOGICPTI_REQ_QUEUE_LEN + 1];
/* The rest of the elements are unimportant for performance. */
struct qlogicpti *next;
__u32 res_dvma; /* Ptr to RESPONSE bufs (DVMA)*/
__u32 req_dvma; /* Ptr to REQUEST bufs (DVMA) */
u_char fware_majrev, fware_minrev, fware_micrev;
struct Scsi_Host *qhost;
int qpti_id;
int scsi_id;
int prom_node;
char prom_name[64];
int irq;
char differential, ultra, clock;
unsigned char bursts;
struct host_param host_param;
struct dev_param dev_param[MAX_TARGETS];
void __iomem *sreg;
#define SREG_TPOWER 0x80 /* State of termpwr */
#define SREG_FUSE 0x40 /* State of on board fuse */
#define SREG_PDISAB 0x20 /* Disable state for power on */
#define SREG_DSENSE 0x10 /* Sense for differential */
#define SREG_IMASK 0x0c /* Interrupt level */
#define SREG_SPMASK 0x03 /* Mask for switch pack */
unsigned char swsreg;
unsigned int
gotirq : 1, /* this instance got an irq */
is_pti : 1; /* Non-zero if this is a PTI board. */
};
/* How to twiddle them bits... */
/* SBUS config register one. */
#define SBUS_CFG1_EPAR 0x0100 /* Enable parity checking */
#define SBUS_CFG1_FMASK 0x00f0 /* Forth code cycle mask */
#define SBUS_CFG1_BENAB 0x0004 /* Burst dvma enable */
#define SBUS_CFG1_B64 0x0003 /* Enable 64byte bursts */
#define SBUS_CFG1_B32 0x0002 /* Enable 32byte bursts */
#define SBUS_CFG1_B16 0x0001 /* Enable 16byte bursts */
#define SBUS_CFG1_B8 0x0008 /* Enable 8byte bursts */
/* SBUS control register */
#define SBUS_CTRL_EDIRQ 0x0020 /* Enable Data DVMA Interrupts */
#define SBUS_CTRL_ECIRQ 0x0010 /* Enable Command DVMA Interrupts */
#define SBUS_CTRL_ESIRQ 0x0008 /* Enable SCSI Processor Interrupts */
#define SBUS_CTRL_ERIRQ 0x0004 /* Enable RISC Processor Interrupts */
#define SBUS_CTRL_GENAB 0x0002 /* Global Interrupt Enable */
#define SBUS_CTRL_RESET 0x0001 /* Soft Reset */
/* SBUS status register */
#define SBUS_STAT_DINT 0x0020 /* Data DVMA IRQ pending */
#define SBUS_STAT_CINT 0x0010 /* Command DVMA IRQ pending */
#define SBUS_STAT_SINT 0x0008 /* SCSI Processor IRQ pending */
#define SBUS_STAT_RINT 0x0004 /* RISC Processor IRQ pending */
#define SBUS_STAT_GINT 0x0002 /* Global IRQ pending */
/* SBUS semaphore register */
#define SBUS_SEMAPHORE_STAT 0x0002 /* Semaphore status bit */
#define SBUS_SEMAPHORE_LCK 0x0001 /* Semaphore lock bit */
/* DVMA control register */
#define DMA_CTRL_CSUSPEND 0x0010 /* DMA channel suspend */
#define DMA_CTRL_CCLEAR 0x0008 /* DMA channel clear and reset */
#define DMA_CTRL_FCLEAR 0x0004 /* DMA fifo clear */
#define DMA_CTRL_CIRQ 0x0002 /* DMA irq clear */
#define DMA_CTRL_DMASTART 0x0001 /* DMA transfer start */
/* SCSI processor override register */
#define CPU_ORIDE_ETRIG 0x8000 /* External trigger enable */
#define CPU_ORIDE_STEP 0x4000 /* Single step mode enable */
#define CPU_ORIDE_BKPT 0x2000 /* Breakpoint reg enable */
#define CPU_ORIDE_PWRITE 0x1000 /* SCSI pin write enable */
#define CPU_ORIDE_OFORCE 0x0800 /* Force outputs on */
#define CPU_ORIDE_LBACK 0x0400 /* SCSI loopback enable */
#define CPU_ORIDE_PTEST 0x0200 /* Parity test enable */
#define CPU_ORIDE_TENAB 0x0100 /* SCSI pins tristate enable */
#define CPU_ORIDE_TPINS 0x0080 /* SCSI pins enable */
#define CPU_ORIDE_FRESET 0x0008 /* FIFO reset */
#define CPU_ORIDE_CTERM 0x0004 /* Command terminate */
#define CPU_ORIDE_RREG 0x0002 /* Reset SCSI processor regs */
#define CPU_ORIDE_RMOD 0x0001 /* Reset SCSI processor module */
/* SCSI processor commands */
#define CPU_CMD_BRESET 0x300b /* Reset SCSI bus */
/* SCSI processor pin control register */
#define CPU_PCTRL_PVALID 0x8000 /* Phase bits are valid */
#define CPU_PCTRL_PHI 0x0400 /* Parity bit high */
#define CPU_PCTRL_PLO 0x0200 /* Parity bit low */
#define CPU_PCTRL_REQ 0x0100 /* REQ bus signal */
#define CPU_PCTRL_ACK 0x0080 /* ACK bus signal */
#define CPU_PCTRL_RST 0x0040 /* RST bus signal */
#define CPU_PCTRL_BSY 0x0020 /* BSY bus signal */
#define CPU_PCTRL_SEL 0x0010 /* SEL bus signal */
#define CPU_PCTRL_ATN 0x0008 /* ATN bus signal */
#define CPU_PCTRL_MSG 0x0004 /* MSG bus signal */
#define CPU_PCTRL_CD 0x0002 /* CD bus signal */
#define CPU_PCTRL_IO 0x0001 /* IO bus signal */
/* SCSI processor differential pins register */
#define CPU_PDIFF_SENSE 0x0200 /* Differential sense */
#define CPU_PDIFF_MODE 0x0100 /* Differential mode */
#define CPU_PDIFF_OENAB 0x0080 /* Outputs enable */
#define CPU_PDIFF_PMASK 0x007c /* Differential control pins */
#define CPU_PDIFF_TGT 0x0002 /* Target mode enable */
#define CPU_PDIFF_INIT 0x0001 /* Initiator mode enable */
/* RISC processor status register */
#define RISC_PSR_FTRUE 0x8000 /* Force true */
#define RISC_PSR_LCD 0x4000 /* Loop counter shows done status */
#define RISC_PSR_RIRQ 0x2000 /* RISC irq status */
#define RISC_PSR_TOFLOW 0x1000 /* Timer overflow (rollover) */
#define RISC_PSR_AOFLOW 0x0800 /* Arithmetic overflow */
#define RISC_PSR_AMSB 0x0400 /* Arithmetic big endian */
#define RISC_PSR_ACARRY 0x0200 /* Arithmetic carry */
#define RISC_PSR_AZERO 0x0100 /* Arithmetic zero */
#define RISC_PSR_ULTRA 0x0020 /* Ultra mode */
#define RISC_PSR_DIRQ 0x0010 /* DVMA interrupt */
#define RISC_PSR_SIRQ 0x0008 /* SCSI processor interrupt */
#define RISC_PSR_HIRQ 0x0004 /* Host interrupt */
#define RISC_PSR_IPEND 0x0002 /* Interrupt pending */
#define RISC_PSR_FFALSE 0x0001 /* Force false */
/* RISC processor memory timing register */
#define RISC_MTREG_P1DFLT 0x1200 /* Default read/write timing, pg1 */
#define RISC_MTREG_P0DFLT 0x0012 /* Default read/write timing, pg0 */
#define RISC_MTREG_P1ULTRA 0x2300 /* Ultra-mode rw timing, pg1 */
#define RISC_MTREG_P0ULTRA 0x0023 /* Ultra-mode rw timing, pg0 */
/* Host command/ctrl register */
#define HCCTRL_NOP 0x0000 /* CMD: No operation */
#define HCCTRL_RESET 0x1000 /* CMD: Reset RISC cpu */
#define HCCTRL_PAUSE 0x2000 /* CMD: Pause RISC cpu */
#define HCCTRL_REL 0x3000 /* CMD: Release paused RISC cpu */
#define HCCTRL_STEP 0x4000 /* CMD: Single step RISC cpu */
#define HCCTRL_SHIRQ 0x5000 /* CMD: Set host irq */
#define HCCTRL_CHIRQ 0x6000 /* CMD: Clear host irq */
#define HCCTRL_CRIRQ 0x7000 /* CMD: Clear RISC cpu irq */
#define HCCTRL_BKPT 0x8000 /* CMD: Breakpoint enables change */
#define HCCTRL_TMODE 0xf000 /* CMD: Enable test mode */
#define HCCTRL_HIRQ 0x0080 /* Host IRQ pending */
#define HCCTRL_RRIP 0x0040 /* RISC cpu reset in happening now */
#define HCCTRL_RPAUSED 0x0020 /* RISC cpu is paused now */
#define HCCTRL_EBENAB 0x0010 /* External breakpoint enable */
#define HCCTRL_B1ENAB 0x0008 /* Breakpoint 1 enable */
#define HCCTRL_B0ENAB 0x0004 /* Breakpoint 0 enable */
/* For our interrupt engine. */
#define for_each_qlogicpti(qp) \
for((qp) = qptichain; (qp); (qp) = (qp)->next)
#endif /* !(_QLOGICPTI_H) */
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