diff options
Diffstat (limited to 'drivers/sbus/dvma.c')
| -rw-r--r-- | drivers/sbus/dvma.c | 130 |
1 files changed, 84 insertions, 46 deletions
diff --git a/drivers/sbus/dvma.c b/drivers/sbus/dvma.c index faa450eeb..f4ff7e539 100644 --- a/drivers/sbus/dvma.c +++ b/drivers/sbus/dvma.c @@ -3,6 +3,7 @@ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) */ +#include <linux/config.h> #include <linux/kernel.h> #include <linux/malloc.h> #include <linux/init.h> @@ -16,7 +17,7 @@ struct Linux_SBus_DMA *dma_chain; /* Print out the current values in the DMA control registers */ -static __inline__ void +extern __inline__ void dump_dma_regs(struct sparc_dma_registers *dregs) { printk("DMA CONTROL<%08lx> ADDR<%08lx> CNT<%08lx> TEST<%08lx>\n", @@ -27,6 +28,50 @@ dump_dma_regs(struct sparc_dma_registers *dregs) return; } +__initfunc(void +init_one_dvma(struct Linux_SBus_DMA *dma, int num_dma)) +{ + printk("dma%d: ", num_dma); + + dma->next = 0; + dma->running=0; /* No transfers going on as of yet */ + dma->allocated=0; /* No one has allocated us yet */ + switch((dma->regs->cond_reg)&DMA_DEVICE_ID) { + case DMA_VERS0: + dma->revision=dvmarev0; + printk("Revision 0 "); + break; + case DMA_ESCV1: + dma->revision=dvmaesc1; + printk("ESC Revision 1 "); + break; + case DMA_VERS1: + dma->revision=dvmarev1; + printk("Revision 1 "); + break; + case DMA_VERS2: + dma->revision=dvmarev2; + printk("Revision 2 "); + break; + case DMA_VERHME: + dma->revision=dvmahme; + printk("HME DVMA gate array "); + break; + case DMA_VERSPLUS: + dma->revision=dvmarevplus; + printk("Revision 1 PLUS "); + break; + default: + printk("unknown dma version %x", + (dma->regs->cond_reg)&DMA_DEVICE_ID); + dma->allocated = 1; + break; + } + printk("\n"); +#if 0 /* Clutters up the screen */ + dump_dma_regs(dma->regs); +#endif +} /* Probe this SBus DMA module(s) */ __initfunc(unsigned long @@ -40,11 +85,11 @@ dvma_init(struct linux_sbus *sbus, unsigned long memory_start)) for_each_sbusdev(this_dev, sbus) { int hme = 0; - if(!strcmp(this_dev->prom_name, "SUNW,fas")) { + if(!strcmp(this_dev->prom_name, "SUNW,fas")) hme = 1; - } else if(strcmp(this_dev->prom_name, "dma") && - strcmp(this_dev->prom_name, "ledma") && - strcmp(this_dev->prom_name, "espdma")) + else if(strcmp(this_dev->prom_name, "dma") && + strcmp(this_dev->prom_name, "ledma") && + strcmp(this_dev->prom_name, "espdma")) continue; /* Found one... */ @@ -62,10 +107,6 @@ dvma_init(struct linux_sbus *sbus, unsigned long memory_start)) /* We're the first in line */ dma_chain=dma; } - dma->next = 0; - - printk("dma%d: ", num_dma); - num_dma++; /* The constant PAGE_SIZE that is passed to sparc_alloc_io makes the * routine only alloc 1 page, that was what the original code did @@ -82,45 +123,42 @@ dvma_init(struct linux_sbus *sbus, unsigned long memory_start)) dma->SBus_dev->reg_addrs[0].which_io, 0x0); dma->node = dma->SBus_dev->prom_node; - dma->running=0; /* No transfers going on as of yet */ - dma->allocated=0; /* No one has allocated us yet */ - switch((dma->regs->cond_reg)&DMA_DEVICE_ID) { - case DMA_VERS0: - dma->revision=dvmarev0; - printk("Revision 0 "); - break; - case DMA_ESCV1: - dma->revision=dvmaesc1; - printk("ESC Revision 1 "); - break; - case DMA_VERS1: - dma->revision=dvmarev1; - printk("Revision 1 "); - break; - case DMA_VERS2: - dma->revision=dvmarev2; - printk("Revision 2 "); - break; - case DMA_VERHME: - dma->revision=dvmahme; - printk("HME DVMA gate array "); - break; - case DMA_VERSPLUS: - dma->revision=dvmarevplus; - printk("Revision 1 PLUS "); - break; - default: - printk("unknown dma version %x", - (dma->regs->cond_reg)&DMA_DEVICE_ID); - dma->allocated = 1; - break; - } - printk("\n"); -#if 0 /* Clutters up the screen */ - dump_dma_regs(dma->regs); -#endif + + init_one_dvma(dma, num_dma++); + }; /* while(this_dev) */ return memory_start; } +#ifdef CONFIG_SUN4 + +#include <asm/sun4paddr.h> + +__initfunc(unsigned long +sun4_dvma_init(unsigned long memory_start)) +{ + struct Linux_SBus_DMA *dma; + struct Linux_SBus_DMA *dchain; + + dma = (struct Linux_SBus_DMA *) memory_start; + memory_start += sizeof(struct Linux_SBus_DMA); + + /* No SBUS */ + dma->SBus_dev = 0x0; + + /* Only one DMA device */ + dma_chain=dma; + + dma->regs = (struct sparc_dma_registers *) + sparc_alloc_io (SUN4_300_DMA_PHYSADDR, 0, + PAGE_SIZE, "dma", 0x0, 0x0); + + /* No prom node */ + dma->node = 0x0; + + init_one_dvma(dma, 0); + return memory_start; +} + +#endif |