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-rw-r--r--include/asm-sparc/floppy.h394
1 files changed, 7 insertions, 387 deletions
diff --git a/include/asm-sparc/floppy.h b/include/asm-sparc/floppy.h
index d3978e068e2b..6c628ba15a8d 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 <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/idprom.h>
-#include <asm/machines.h>
-#include <asm/oplib.h>
-#include <asm/auxio.h>
-#include <asm/irq.h>
-
-/* 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 <asm-sparc/floppy_64.h>
+#else
+#include <asm-sparc/floppy_32.h>
+#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) */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.