soc.h
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上传日期:2013-02-24
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- /* soc.h: Definitions for Sparc SUNW,soc Fibre Channel Sbus driver.
- *
- * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- */
- #ifndef __SOC_H
- #define __SOC_H
- #include "fc.h"
- #include "fcp.h"
- #include "fcp_impl.h"
- /* Hardware register offsets and constants first {{{ */
- #define CFG 0x00UL /* Config Register */
- #define SAE 0x04UL /* Slave Access Error Register */
- #define CMD 0x08UL /* Command and Status Register */
- #define IMASK 0x0cUL /* Interrupt Mask Register */
- /* Config Register */
- #define SOC_CFG_EXT_RAM_BANK_MASK 0x07000000
- #define SOC_CFG_EEPROM_BANK_MASK 0x00030000
- #define SOC_CFG_BURST64_MASK 0x00000700
- #define SOC_CFG_SBUS_PARITY_TEST 0x00000020
- #define SOC_CFG_SBUS_PARITY_CHECK 0x00000010
- #define SOC_CFG_SBUS_ENHANCED 0x00000008
- #define SOC_CFG_BURST_MASK 0x00000007
- /* Bursts */
- #define SOC_CFG_BURST_4 0x00000000
- #define SOC_CFG_BURST_16 0x00000004
- #define SOC_CFG_BURST_32 0x00000005
- #define SOC_CFG_BURST_64 0x00000006
- /* Slave Access Error Register */
- #define SOC_SAE_ALIGNMENT 0x00000004
- #define SOC_SAE_UNSUPPORTED 0x00000002
- #define SOC_SAE_PARITY 0x00000001
- /* Command & Status Register */
- #define SOC_CMD_RSP_QALL 0x000f0000
- #define SOC_CMD_RSP_Q0 0x00010000
- #define SOC_CMD_RSP_Q1 0x00020000
- #define SOC_CMD_RSP_Q2 0x00040000
- #define SOC_CMD_RSP_Q3 0x00080000
- #define SOC_CMD_REQ_QALL 0x00000f00
- #define SOC_CMD_REQ_Q0 0x00000100
- #define SOC_CMD_REQ_Q1 0x00000200
- #define SOC_CMD_REQ_Q2 0x00000400
- #define SOC_CMD_REQ_Q3 0x00000800
- #define SOC_CMD_SAE 0x00000080
- #define SOC_CMD_INTR_PENDING 0x00000008
- #define SOC_CMD_NON_QUEUED 0x00000004
- #define SOC_CMD_IDLE 0x00000002
- #define SOC_CMD_SOFT_RESET 0x00000001
- /* Interrupt Mask Register */
- #define SOC_IMASK_RSP_QALL 0x000f0000
- #define SOC_IMASK_RSP_Q0 0x00010000
- #define SOC_IMASK_RSP_Q1 0x00020000
- #define SOC_IMASK_RSP_Q2 0x00040000
- #define SOC_IMASK_RSP_Q3 0x00080000
- #define SOC_IMASK_REQ_QALL 0x00000f00
- #define SOC_IMASK_REQ_Q0 0x00000100
- #define SOC_IMASK_REQ_Q1 0x00000200
- #define SOC_IMASK_REQ_Q2 0x00000400
- #define SOC_IMASK_REQ_Q3 0x00000800
- #define SOC_IMASK_SAE 0x00000080
- #define SOC_IMASK_NON_QUEUED 0x00000004
- #define SOC_INTR(s, cmd)
- (((cmd & SOC_CMD_RSP_QALL) | ((~cmd) & SOC_CMD_REQ_QALL))
- & s->imask)
-
- #define SOC_SETIMASK(s, i)
- do { (s)->imask = (i);
- sbus_writel((i), (s)->regs + IMASK);
- } while(0)
- /* XRAM
- *
- * This is a 64KB register area. It accepts only halfword access.
- * That's why here are the following inline functions...
- */
-
- typedef unsigned long xram_p;
- /* Get 32bit number from XRAM */
- static inline u32 xram_get_32 (xram_p x)
- {
- return ((sbus_readw(x + 0x00UL) << 16) |
- (sbus_readw(x + 0x02UL)));
- }
- /* Like the above, but when we don't care about the high 16 bits */
- static inline u32 xram_get_32low (xram_p x)
- {
- return (u32) sbus_readw(x + 0x02UL);
- }
- static inline u16 xram_get_16 (xram_p x)
- {
- return sbus_readw(x);
- }
- static inline u8 xram_get_8 (xram_p x)
- {
- if (x & (xram_p)0x1) {
- x = x - 1;
- return (u8) sbus_readw(x);
- } else {
- return (u8) (sbus_readw(x) >> 8);
- }
- }
- static inline void xram_copy_from (void *p, xram_p x, int len)
- {
- for (len >>= 2; len > 0; len--, x += sizeof(u32)) {
- u32 val;
- val = ((sbus_readw(x + 0x00UL) << 16) |
- (sbus_readw(x + 0x02UL)));
- *((u32 *)p)++ = val;
- }
- }
- static inline void xram_copy_to (xram_p x, void *p, int len)
- {
- for (len >>= 2; len > 0; len--, x += sizeof(u32)) {
- u32 tmp = *((u32 *)p)++;
- sbus_writew(tmp >> 16, x + 0x00UL);
- sbus_writew(tmp, x + 0x02UL);
- }
- }
- static inline void xram_bzero (xram_p x, int len)
- {
- for (len >>= 1; len > 0; len--, x += sizeof(u16))
- sbus_writew(0, x);
- }
- /* Circular Queue */
- #define SOC_CQ_REQ_OFFSET (0x100 * sizeof(u16))
- #define SOC_CQ_RSP_OFFSET (0x110 * sizeof(u16))
- typedef struct {
- u32 address;
- u8 in;
- u8 out;
- u8 last;
- u8 seqno;
- } soc_hw_cq;
- #define SOC_PORT_A 0x0000 /* From/To Port A */
- #define SOC_PORT_B 0x0001 /* From/To Port A */
- #define SOC_FC_HDR 0x0002 /* Contains FC Header */
- #define SOC_NORSP 0x0004 /* Don't generate response nor interrupt */
- #define SOC_NOINT 0x0008 /* Generate response but not interrupt */
- #define SOC_XFERRDY 0x0010 /* Generate XFERRDY */
- #define SOC_IGNOREPARAM 0x0020 /* Ignore PARAM field in the FC header */
- #define SOC_COMPLETE 0x0040 /* Command completed */
- #define SOC_UNSOLICITED 0x0080 /* For request this is the packet to establish unsolicited pools, */
- /* for rsp this is unsolicited packet */
- #define SOC_STATUS 0x0100 /* State change (on/off line) */
- typedef struct {
- u32 token;
- u16 flags;
- u8 class;
- u8 segcnt;
- u32 bytecnt;
- } soc_hdr;
- typedef struct {
- u32 base;
- u32 count;
- } soc_data;
- #define SOC_CQTYPE_OUTBOUND 0x01
- #define SOC_CQTYPE_INBOUND 0x02
- #define SOC_CQTYPE_SIMPLE 0x03
- #define SOC_CQTYPE_IO_WRITE 0x04
- #define SOC_CQTYPE_IO_READ 0x05
- #define SOC_CQTYPE_UNSOLICITED 0x06
- #define SOC_CQTYPE_DIAG 0x07
- #define SOC_CQTYPE_OFFLINE 0x08
- #define SOC_CQTYPE_RESPONSE 0x10
- #define SOC_CQTYPE_INLINE 0x20
- #define SOC_CQFLAGS_CONT 0x01
- #define SOC_CQFLAGS_FULL 0x02
- #define SOC_CQFLAGS_BADHDR 0x04
- #define SOC_CQFLAGS_BADPKT 0x08
- typedef struct {
- soc_hdr shdr;
- soc_data data[3];
- fc_hdr fchdr;
- u8 count;
- u8 type;
- u8 flags;
- u8 seqno;
- } soc_req;
- #define SOC_OK 0
- #define SOC_P_RJT 2
- #define SOC_F_RJT 3
- #define SOC_P_BSY 4
- #define SOC_F_BSY 5
- #define SOC_ONLINE 0x10
- #define SOC_OFFLINE 0x11
- #define SOC_TIMEOUT 0x12
- #define SOC_OVERRUN 0x13
- #define SOC_UNKOWN_CQ_TYPE 0x20
- #define SOC_BAD_SEG_CNT 0x21
- #define SOC_MAX_XCHG_EXCEEDED 0x22
- #define SOC_BAD_XID 0x23
- #define SOC_XCHG_BUSY 0x24
- #define SOC_BAD_POOL_ID 0x25
- #define SOC_INSUFFICIENT_CQES 0x26
- #define SOC_ALLOC_FAIL 0x27
- #define SOC_BAD_SID 0x28
- #define SOC_NO_SEG_INIT 0x29
- typedef struct {
- soc_hdr shdr;
- u32 status;
- soc_data data;
- u8 xxx1[12];
- fc_hdr fchdr;
- u8 count;
- u8 type;
- u8 flags;
- u8 seqno;
- } soc_rsp;
- /* }}} */
- /* Now our software structures and constants we use to drive the beast {{{ */
- #define SOC_CQ_REQ0_SIZE 4
- #define SOC_CQ_REQ1_SIZE 64
- #define SOC_CQ_RSP0_SIZE 8
- #define SOC_CQ_RSP1_SIZE 4
- #define SOC_SOLICITED_RSP_Q 0
- #define SOC_UNSOLICITED_RSP_Q 1
- struct soc;
- typedef struct {
- /* This must come first */
- fc_channel fc;
- struct soc *s;
- u16 flags;
- u16 mask;
- } soc_port;
- typedef struct {
- soc_hw_cq *hw_cq; /* Related XRAM cq */
- soc_req *pool;
- u8 in;
- u8 out;
- u8 last;
- u8 seqno;
- } soc_cq;
- struct soc {
- soc_port port[2]; /* Every SOC has one or two FC ports */
- soc_cq req[2]; /* Request CQs */
- soc_cq rsp[2]; /* Response CQs */
- int soc_no;
- unsigned long regs;
- xram_p xram;
- fc_wwn wwn;
- u32 imask; /* Our copy of regs->imask */
- u32 cfg; /* Our copy of regs->cfg */
- char serv_params[80];
- struct soc *next;
- int curr_port; /* Which port will have priority to fcp_queue_empty */
- soc_req *req_cpu;
- u32 req_dvma;
- };
- /* }}} */
- #endif /* !(__SOC_H) */