diff options
Diffstat (limited to 'drivers/scsi/NCR53C9x.c')
| -rw-r--r-- | drivers/scsi/NCR53C9x.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/scsi/NCR53C9x.c b/drivers/scsi/NCR53C9x.c index c997cba65..875889706 100644 --- a/drivers/scsi/NCR53C9x.c +++ b/drivers/scsi/NCR53C9x.c @@ -9,6 +9,9 @@ * * Set up to use GETREG/SETREG (preprocessor macros in NCR53c9x.h) by * Tymm Twillman (tymm@coe.missouri.edu) + * + * Support for IOASIC DECstations by + * Harald Koerfgen (harald@unix-ag.org) */ /* TODO: @@ -52,6 +55,13 @@ #undef SYMBIOS_HACK #endif +#ifdef CONFIG_DECSTATION +/* IOASIC DECstations only! */ +#include <asm/wbflush.h> +#else +#define wbflush() +#endif + #include <asm/system.h> #include <asm/ptrace.h> #include <asm/pgtable.h> @@ -302,6 +312,7 @@ extern inline void esp_cmd(struct NCR_ESP *esp, struct ESP_regs *eregs, esp->espcmdent = (esp->espcmdent + 1) & 31; #endif SETREG(eregs->esp_cmnd, cmd); + wbflush(); } /* How we use the various Linux SCSI data structures for operation. @@ -442,6 +453,7 @@ static inline void esp_reset_esp(struct NCR_ESP *esp, struct ESP_regs *eregs) SETREG(eregs->esp_timeo, esp->neg_defp); esp->max_period = (esp->max_period + 3)>>2; esp->min_period = (esp->min_period + 3)>>2; + wbflush(); SETREG(eregs->esp_cfg1, esp->config1); switch(esp->erev) { @@ -492,6 +504,7 @@ static inline void esp_reset_esp(struct NCR_ESP *esp, struct ESP_regs *eregs) panic("esp: what could it be... I wonder..."); break; }; + wbflush(); /* Eat any bitrot in the chip */ trash = GETREG(eregs->esp_intrpt); @@ -515,6 +528,7 @@ inline void esp_bootup_reset(struct NCR_ESP *esp, struct ESP_regs *eregs) esp_cmd(esp, eregs, ESP_CMD_RS); udelay(400); SETREG(eregs->esp_cfg1, esp->config1); + wbflush(); /* Eat any bitrot in the chip and we are done... */ trash = GETREG(eregs->esp_intrpt); @@ -655,6 +669,7 @@ void esp_initialize(struct NCR_ESP *esp) esp->config1 = (ESP_CONFIG1_PENABLE | (esp->scsi_id & 7)); esp->config2 = (ESP_CONFIG2_SCSI2ENAB | ESP_CONFIG2_REGPARITY); SETREG(eregs->esp_cfg2, esp->config2); + wbflush(); #ifndef SYMBIOS_HACK if((GETREG(eregs->esp_cfg2) & ~(ESP_CONFIG2_MAGIC)) != (ESP_CONFIG2_SCSI2ENAB | ESP_CONFIG2_REGPARITY)) { @@ -667,6 +682,7 @@ void esp_initialize(struct NCR_ESP *esp) SETREG(eregs->esp_cfg3, 0); esp->config3[0] = 5; SETREG(eregs->esp_cfg3, esp->config3[0]); + wbflush(); #ifndef SYMBIOS_HACK if(GETREG(eregs->esp_cfg3) != 5) { printk("NCR53C90A(esp100a) detected\n"); @@ -695,6 +711,7 @@ void esp_initialize(struct NCR_ESP *esp) esp->config2 = 0; SETREG(eregs->esp_cfg2, esp->config2); } + wbflush(); } #endif } @@ -1676,6 +1693,7 @@ static inline void esp_setcount(struct ESP_regs *eregs, int cnt, int hme) SETREG(eregs->fas_rlo, 0); SETREG(eregs->fas_rhi, 0); } + wbflush(); } static inline int esp_getcount(struct ESP_regs *eregs) @@ -1831,6 +1849,7 @@ static inline void esp_connect(struct NCR_ESP *esp, struct ESP_regs *eregs, SETREG(eregs->esp_busid, (sp->target & 0xf) | (ESP_BUSID_RESELID | ESP_BUSID_CTR32BIT)); esp->current_SC = sp; + wbflush(); } /* This will place the current working command back into the issue queue @@ -2951,6 +2970,7 @@ static inline int check_multibyte_msg(struct NCR_ESP *esp, } SETREG(eregs->esp_soff, SDptr->sync_min_period); SETREG(eregs->esp_stp, SDptr->sync_max_offset); + wbflush(); ESPSDTR(("soff=%2x stp=%2x cfg3=%2x\n", SDptr->sync_max_offset, @@ -2975,6 +2995,7 @@ static inline int check_multibyte_msg(struct NCR_ESP *esp, esp->config3[SCptr->target] &= ~bit; SETREG(eregs->esp_cfg3, esp->config3[SCptr->target]); + wbflush(); } } @@ -3025,6 +3046,7 @@ static inline int check_multibyte_msg(struct NCR_ESP *esp, esp->config3[SCptr->target] &= ~(ESP_CONFIG3_EWIDE); } SETREG(eregs->esp_cfg3, esp->config3[SCptr->target]); + wbflush(); /* Regardless, next try for sync transfers. */ build_sync_nego_msg(esp, esp->sync_defp, 15); |