sbi.h
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- /* $Id: sbi.h,v 1.2 1998/03/09 14:04:48 jj Exp $
- * sbi.h: SBI (Sbus Interface on sun4d) definitions
- *
- * Copyright (C) 1997 Jakub Jelinek <jj@sunsite.mff.cuni.cz>
- */
- #ifndef _SPARC_SBI_H
- #define _SPARC_SBI_H
- #include <asm/obio.h>
- /* SBI */
- struct sbi_regs {
- /* 0x0000 */ u32 cid; /* Component ID */
- /* 0x0004 */ u32 ctl; /* Control */
- /* 0x0008 */ u32 status; /* Status */
- u32 _unused1;
-
- /* 0x0010 */ u32 cfg0; /* Slot0 config reg */
- /* 0x0014 */ u32 cfg1; /* Slot1 config reg */
- /* 0x0018 */ u32 cfg2; /* Slot2 config reg */
- /* 0x001c */ u32 cfg3; /* Slot3 config reg */
- /* 0x0020 */ u32 stb0; /* Streaming buf control for slot 0 */
- /* 0x0024 */ u32 stb1; /* Streaming buf control for slot 1 */
- /* 0x0028 */ u32 stb2; /* Streaming buf control for slot 2 */
- /* 0x002c */ u32 stb3; /* Streaming buf control for slot 3 */
- /* 0x0030 */ u32 intr_state; /* Interrupt state */
- /* 0x0034 */ u32 intr_tid; /* Interrupt target ID */
- /* 0x0038 */ u32 intr_diag; /* Interrupt diagnostics */
- };
- #define SBI_CID 0x02800000
- #define SBI_CTL 0x02800004
- #define SBI_STATUS 0x02800008
- #define SBI_CFG0 0x02800010
- #define SBI_CFG1 0x02800014
- #define SBI_CFG2 0x02800018
- #define SBI_CFG3 0x0280001c
- #define SBI_STB0 0x02800020
- #define SBI_STB1 0x02800024
- #define SBI_STB2 0x02800028
- #define SBI_STB3 0x0280002c
- #define SBI_INTR_STATE 0x02800030
- #define SBI_INTR_TID 0x02800034
- #define SBI_INTR_DIAG 0x02800038
- /* Burst bits for 8, 16, 32, 64 are in cfgX registers at bits 2, 3, 4, 5 respectively */
- #define SBI_CFG_BURST_MASK 0x0000001e
- /* How to make devid from sbi no */
- #define SBI2DEVID(sbino) ((sbino<<4)|2)
- /* intr_state has 4 bits for slots 0 .. 3 and these bits are repeated for each sbus irq level
- *
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * SBUS IRQ LEVEL | 7 | 6 | 5 | 4 | 3 | 2 | 1 | |
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Reser |
- * SLOT # |3|2|1|0|3|2|1|0|3|2|1|0|3|2|1|0|3|2|1|0|3|2|1|0|3|2|1|0| ved |
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-------+
- * Bits 31 27 23 19 15 11 7 3 0
- */
- #ifndef __ASSEMBLY__
- extern __inline__ int acquire_sbi(int devid, int mask)
- {
- __asm__ __volatile__ ("swapa [%2] %3, %0" :
- "=r" (mask) :
- "0" (mask),
- "r" (ECSR_DEV_BASE(devid) | SBI_INTR_STATE),
- "i" (ASI_M_CTL));
- return mask;
- }
- extern __inline__ void release_sbi(int devid, int mask)
- {
- __asm__ __volatile__ ("sta %0, [%1] %2" : :
- "r" (mask),
- "r" (ECSR_DEV_BASE(devid) | SBI_INTR_STATE),
- "i" (ASI_M_CTL));
- }
- extern __inline__ void set_sbi_tid(int devid, int targetid)
- {
- __asm__ __volatile__ ("sta %0, [%1] %2" : :
- "r" (targetid),
- "r" (ECSR_DEV_BASE(devid) | SBI_INTR_TID),
- "i" (ASI_M_CTL));
- }
- extern __inline__ int get_sbi_ctl(int devid, int cfgno)
- {
- int cfg;
-
- __asm__ __volatile__ ("lda [%1] %2, %0" :
- "=r" (cfg) :
- "r" ((ECSR_DEV_BASE(devid) | SBI_CFG0) + (cfgno<<2)),
- "i" (ASI_M_CTL));
- return cfg;
- }
- extern __inline__ void set_sbi_ctl(int devid, int cfgno, int cfg)
- {
- __asm__ __volatile__ ("sta %0, [%1] %2" : :
- "r" (cfg),
- "r" ((ECSR_DEV_BASE(devid) | SBI_CFG0) + (cfgno<<2)),
- "i" (ASI_M_CTL));
- }
- #endif /* !__ASSEMBLY__ */
- #endif /* !(_SPARC_SBI_H) */