X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-sparc%2Ffloppy.h;h=6c628ba15a8d62ceaccb1e0124457435c478b445;hb=0c265f4e8598e251108759685dbb3789868086b2;hp=d3978e068e2bbb9be764d6150ad7a30a16d12ffe;hpb=62429f434091586d54b37b8dd46076e7c08b27b9;p=linux-2.6-omap-h63xx.git diff --git a/include/asm-sparc/floppy.h b/include/asm-sparc/floppy.h index d3978e068e2..6c628ba15a8 100644 --- a/include/asm-sparc/floppy.h +++ b/include/asm-sparc/floppy.h @@ -1,388 +1,8 @@ -/* asm-sparc/floppy.h: Sparc specific parts of the Floppy driver. - * - * Copyright (C) 1995 David S. Miller (davem@davemloft.net) - */ - -#ifndef __ASM_SPARC_FLOPPY_H -#define __ASM_SPARC_FLOPPY_H - -#include -#include -#include -#include -#include -#include -#include -#include - -/* We don't need no stinkin' I/O port allocation crap. */ -#undef release_region -#undef request_region -#define release_region(X, Y) do { } while(0) -#define request_region(X, Y, Z) (1) - -/* References: - * 1) Netbsd Sun floppy driver. - * 2) NCR 82077 controller manual - * 3) Intel 82077 controller manual - */ -struct sun_flpy_controller { - volatile unsigned char status_82072; /* Main Status reg. */ -#define dcr_82072 status_82072 /* Digital Control reg. */ -#define status1_82077 status_82072 /* Auxiliary Status reg. 1 */ - - volatile unsigned char data_82072; /* Data fifo. */ -#define status2_82077 data_82072 /* Auxiliary Status reg. 2 */ - - volatile unsigned char dor_82077; /* Digital Output reg. */ - volatile unsigned char tapectl_82077; /* What the? Tape control reg? */ - - volatile unsigned char status_82077; /* Main Status Register. */ -#define drs_82077 status_82077 /* Digital Rate Select reg. */ - - volatile unsigned char data_82077; /* Data fifo. */ - volatile unsigned char ___unused; - volatile unsigned char dir_82077; /* Digital Input reg. */ -#define dcr_82077 dir_82077 /* Config Control reg. */ -}; - -/* You'll only ever find one controller on a SparcStation anyways. */ -static struct sun_flpy_controller *sun_fdc = NULL; -extern volatile unsigned char *fdc_status; - -struct sun_floppy_ops { - unsigned char (*fd_inb)(int port); - void (*fd_outb)(unsigned char value, int port); -}; - -static struct sun_floppy_ops sun_fdops; - -#define fd_inb(port) sun_fdops.fd_inb(port) -#define fd_outb(value,port) sun_fdops.fd_outb(value,port) -#define fd_enable_dma() sun_fd_enable_dma() -#define fd_disable_dma() sun_fd_disable_dma() -#define fd_request_dma() (0) /* nothing... */ -#define fd_free_dma() /* nothing... */ -#define fd_clear_dma_ff() /* nothing... */ -#define fd_set_dma_mode(mode) sun_fd_set_dma_mode(mode) -#define fd_set_dma_addr(addr) sun_fd_set_dma_addr(addr) -#define fd_set_dma_count(count) sun_fd_set_dma_count(count) -#define fd_enable_irq() /* nothing... */ -#define fd_disable_irq() /* nothing... */ -#define fd_cacheflush(addr, size) /* nothing... */ -#define fd_request_irq() sun_fd_request_irq() -#define fd_free_irq() /* nothing... */ -#if 0 /* P3: added by Alain, these cause a MMU corruption. 19960524 XXX */ -#define fd_dma_mem_alloc(size) ((unsigned long) vmalloc(size)) -#define fd_dma_mem_free(addr,size) (vfree((void *)(addr))) +#ifndef ___ASM_SPARC_FLOPPY_H +#define ___ASM_SPARC_FLOPPY_H +#if defined(__sparc__) && defined(__arch64__) +#include +#else +#include +#endif #endif - -/* XXX This isn't really correct. XXX */ -#define get_dma_residue(x) (0) - -#define FLOPPY0_TYPE 4 -#define FLOPPY1_TYPE 0 - -/* Super paranoid... */ -#undef HAVE_DISABLE_HLT - -/* Here is where we catch the floppy driver trying to initialize, - * therefore this is where we call the PROM device tree probing - * routine etc. on the Sparc. - */ -#define FDC1 sun_floppy_init() - -#define N_FDC 1 -#define N_DRIVE 8 - -/* No 64k boundary crossing problems on the Sparc. */ -#define CROSS_64KB(a,s) (0) - -/* Routines unique to each controller type on a Sun. */ -static void sun_set_dor(unsigned char value, int fdc_82077) -{ - if (sparc_cpu_model == sun4c) { - unsigned int bits = 0; - if (value & 0x10) - bits |= AUXIO_FLPY_DSEL; - if ((value & 0x80) == 0) - bits |= AUXIO_FLPY_EJCT; - set_auxio(bits, (~bits) & (AUXIO_FLPY_DSEL|AUXIO_FLPY_EJCT)); - } - if (fdc_82077) { - sun_fdc->dor_82077 = value; - } -} - -static unsigned char sun_read_dir(void) -{ - if (sparc_cpu_model == sun4c) - return (get_auxio() & AUXIO_FLPY_DCHG) ? 0x80 : 0; - else - return sun_fdc->dir_82077; -} - -static unsigned char sun_82072_fd_inb(int port) -{ - udelay(5); - switch(port & 7) { - default: - printk("floppy: Asked to read unknown port %d\n", port); - panic("floppy: Port bolixed."); - case 4: /* FD_STATUS */ - return sun_fdc->status_82072 & ~STATUS_DMA; - case 5: /* FD_DATA */ - return sun_fdc->data_82072; - case 7: /* FD_DIR */ - return sun_read_dir(); - }; - panic("sun_82072_fd_inb: How did I get here?"); -} - -static void sun_82072_fd_outb(unsigned char value, int port) -{ - udelay(5); - switch(port & 7) { - default: - printk("floppy: Asked to write to unknown port %d\n", port); - panic("floppy: Port bolixed."); - case 2: /* FD_DOR */ - sun_set_dor(value, 0); - break; - case 5: /* FD_DATA */ - sun_fdc->data_82072 = value; - break; - case 7: /* FD_DCR */ - sun_fdc->dcr_82072 = value; - break; - case 4: /* FD_STATUS */ - sun_fdc->status_82072 = value; - break; - }; - return; -} - -static unsigned char sun_82077_fd_inb(int port) -{ - udelay(5); - switch(port & 7) { - default: - printk("floppy: Asked to read unknown port %d\n", port); - panic("floppy: Port bolixed."); - case 0: /* FD_STATUS_0 */ - return sun_fdc->status1_82077; - case 1: /* FD_STATUS_1 */ - return sun_fdc->status2_82077; - case 2: /* FD_DOR */ - return sun_fdc->dor_82077; - case 3: /* FD_TDR */ - return sun_fdc->tapectl_82077; - case 4: /* FD_STATUS */ - return sun_fdc->status_82077 & ~STATUS_DMA; - case 5: /* FD_DATA */ - return sun_fdc->data_82077; - case 7: /* FD_DIR */ - return sun_read_dir(); - }; - panic("sun_82077_fd_inb: How did I get here?"); -} - -static void sun_82077_fd_outb(unsigned char value, int port) -{ - udelay(5); - switch(port & 7) { - default: - printk("floppy: Asked to write to unknown port %d\n", port); - panic("floppy: Port bolixed."); - case 2: /* FD_DOR */ - sun_set_dor(value, 1); - break; - case 5: /* FD_DATA */ - sun_fdc->data_82077 = value; - break; - case 7: /* FD_DCR */ - sun_fdc->dcr_82077 = value; - break; - case 4: /* FD_STATUS */ - sun_fdc->status_82077 = value; - break; - case 3: /* FD_TDR */ - sun_fdc->tapectl_82077 = value; - break; - }; - return; -} - -/* For pseudo-dma (Sun floppy drives have no real DMA available to - * them so we must eat the data fifo bytes directly ourselves) we have - * three state variables. doing_pdma tells our inline low-level - * assembly floppy interrupt entry point whether it should sit and eat - * bytes from the fifo or just transfer control up to the higher level - * floppy interrupt c-code. I tried very hard but I could not get the - * pseudo-dma to work in c-code without getting many overruns and - * underruns. If non-zero, doing_pdma encodes the direction of - * the transfer for debugging. 1=read 2=write - */ -extern char *pdma_vaddr; -extern unsigned long pdma_size; -extern volatile int doing_pdma; - -/* This is software state */ -extern char *pdma_base; -extern unsigned long pdma_areasize; - -/* Common routines to all controller types on the Sparc. */ -static inline void virtual_dma_init(void) -{ - /* nothing... */ -} - -static inline void sun_fd_disable_dma(void) -{ - doing_pdma = 0; - if (pdma_base) { - mmu_unlockarea(pdma_base, pdma_areasize); - pdma_base = NULL; - } -} - -static inline void sun_fd_set_dma_mode(int mode) -{ - switch(mode) { - case DMA_MODE_READ: - doing_pdma = 1; - break; - case DMA_MODE_WRITE: - doing_pdma = 2; - break; - default: - printk("Unknown dma mode %d\n", mode); - panic("floppy: Giving up..."); - } -} - -static inline void sun_fd_set_dma_addr(char *buffer) -{ - pdma_vaddr = buffer; -} - -static inline void sun_fd_set_dma_count(int length) -{ - pdma_size = length; -} - -static inline void sun_fd_enable_dma(void) -{ - pdma_vaddr = mmu_lockarea(pdma_vaddr, pdma_size); - pdma_base = pdma_vaddr; - pdma_areasize = pdma_size; -} - -/* Our low-level entry point in arch/sparc/kernel/entry.S */ -extern int sparc_floppy_request_irq(int irq, unsigned long flags, - irq_handler_t irq_handler); - -static int sun_fd_request_irq(void) -{ - static int once = 0; - int error; - - if(!once) { - once = 1; - error = sparc_floppy_request_irq(FLOPPY_IRQ, - IRQF_DISABLED, - floppy_interrupt); - return ((error == 0) ? 0 : -1); - } else return 0; -} - -static struct linux_prom_registers fd_regs[2]; - -static int sun_floppy_init(void) -{ - char state[128]; - int tnode, fd_node, num_regs; - struct resource r; - - use_virtual_dma = 1; - - FLOPPY_IRQ = 11; - /* Forget it if we aren't on a machine that could possibly - * ever have a floppy drive. - */ - if((sparc_cpu_model != sun4c && sparc_cpu_model != sun4m) || - ((idprom->id_machtype == (SM_SUN4C | SM_4C_SLC)) || - (idprom->id_machtype == (SM_SUN4C | SM_4C_ELC)))) { - /* We certainly don't have a floppy controller. */ - goto no_sun_fdc; - } - /* Well, try to find one. */ - tnode = prom_getchild(prom_root_node); - fd_node = prom_searchsiblings(tnode, "obio"); - if(fd_node != 0) { - tnode = prom_getchild(fd_node); - fd_node = prom_searchsiblings(tnode, "SUNW,fdtwo"); - } else { - fd_node = prom_searchsiblings(tnode, "fd"); - } - if(fd_node == 0) { - goto no_sun_fdc; - } - - /* The sun4m lets us know if the controller is actually usable. */ - if(sparc_cpu_model == sun4m && - prom_getproperty(fd_node, "status", state, sizeof(state)) != -1) { - if(!strcmp(state, "disabled")) { - goto no_sun_fdc; - } - } - num_regs = prom_getproperty(fd_node, "reg", (char *) fd_regs, sizeof(fd_regs)); - num_regs = (num_regs / sizeof(fd_regs[0])); - prom_apply_obio_ranges(fd_regs, num_regs); - memset(&r, 0, sizeof(r)); - r.flags = fd_regs[0].which_io; - r.start = fd_regs[0].phys_addr; - sun_fdc = (struct sun_flpy_controller *) - sbus_ioremap(&r, 0, fd_regs[0].reg_size, "floppy"); - - /* Last minute sanity check... */ - if(sun_fdc->status_82072 == 0xff) { - sun_fdc = NULL; - goto no_sun_fdc; - } - - sun_fdops.fd_inb = sun_82077_fd_inb; - sun_fdops.fd_outb = sun_82077_fd_outb; - fdc_status = &sun_fdc->status_82077; - - if (sun_fdc->dor_82077 == 0x80) { - sun_fdc->dor_82077 = 0x02; - if (sun_fdc->dor_82077 == 0x80) { - sun_fdops.fd_inb = sun_82072_fd_inb; - sun_fdops.fd_outb = sun_82072_fd_outb; - fdc_status = &sun_fdc->status_82072; - } - } - - /* Success... */ - allowed_drive_mask = 0x01; - return (int) sun_fdc; - -no_sun_fdc: - return -1; -} - -static int sparc_eject(void) -{ - set_dor(0x00, 0xff, 0x90); - udelay(500); - set_dor(0x00, 0x6f, 0x00); - udelay(500); - return 0; -} - -#define fd_eject(drive) sparc_eject() - -#define EXTRA_FLOPPY_PARAMS - -#endif /* !(__ASM_SPARC_FLOPPY_H) */