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linux/drivers/scsi/qlogicpti.h
Tushar Dave e58566b1b1 qlogicpti: Fix compiler warnings 
qlogicpti uses '__u32' for dma handle while invoking kernel DMA APIs,
instead of using dma_addr_t. This hasn't caused any 'incompatible
pointer type' warning on SPARC because until now dma_addr_t is of
type u32. However, recent changes in SPARC ATU (iommu) enabled 64bit
DMA and therefore dma_addr_t became of type u64. This makes
'incompatible pointer type' warnings inevitable.

e.g.
drivers/scsi/qlogicpti.c: In function ‘qpti_map_queues’:
drivers/scsi/qlogicpti.c:813: warning: passing argument 3 of ‘dma_alloc_coherent’ from incompatible pointer type
./include/linux/dma-mapping.h:445: note: expected ‘dma_addr_t *’ but argument is of type ‘__u32 *’
drivers/scsi/qlogicpti.c:822: warning: passing argument 3 of ‘dma_alloc_coherent’ from incompatible pointer type
./include/linux/dma-mapping.h:445: note: expected ‘dma_addr_t *’ but argument is of type ‘__u32 *’

For the record, qlogicpti never executes on sun4v. Therefore even
though 64bit DMA is enabled on SPARC, qlogicpti continues to use
legacy iommu that guarantees DMA address is always in 32bit range.

This patch resolves aforementioned compiler warnings.

Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com>
Reviewed-by: thomas tai <thomas.tai@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-28 15:51:31 -05:00

508 lines
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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 platform_device *op;
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;
dma_addr_t res_dvma; /* Ptr to RESPONSE bufs (DVMA)*/
dma_addr_t 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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