| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* floppy.h: Sparc specific parts of the Floppy driver. |
| * |
| * Copyright (C) 1996, 2007, 2008 David S. Miller (davem@davemloft.net) |
| * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
| * |
| * Ultra/PCI support added: Sep 1997 Eddie C. Dost (ecd@skynet.be) |
| */ |
| |
| #ifndef __ASM_SPARC64_FLOPPY_H |
| #define __ASM_SPARC64_FLOPPY_H |
| |
| #include <linux/of.h> |
| #include <linux/of_device.h> |
| #include <linux/dma-mapping.h> |
| |
| #include <asm/auxio.h> |
| |
| /* |
| * Define this to enable exchanging drive 0 and 1 if only drive 1 is |
| * probed on PCI machines. |
| */ |
| #undef PCI_FDC_SWAP_DRIVES |
| |
| |
| /* References: |
| * 1) Netbsd Sun floppy driver. |
| * 2) NCR 82077 controller manual |
| * 3) Intel 82077 controller manual |
| */ |
| struct sun_flpy_controller { |
| volatile unsigned char status1_82077; /* Auxiliary Status reg. 1 */ |
| volatile unsigned char status2_82077; /* Auxiliary Status reg. 2 */ |
| volatile unsigned char dor_82077; /* Digital Output reg. */ |
| volatile unsigned char tapectl_82077; /* 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 an Ultra anyways. */ |
| static struct sun_flpy_controller *sun_fdc = (struct sun_flpy_controller *)-1; |
| unsigned long fdc_status; |
| static struct platform_device *floppy_op = NULL; |
| |
| struct sun_floppy_ops { |
| unsigned char (*fd_inb) (unsigned long port); |
| void (*fd_outb) (unsigned char value, unsigned long port); |
| void (*fd_enable_dma) (void); |
| void (*fd_disable_dma) (void); |
| void (*fd_set_dma_mode) (int); |
| void (*fd_set_dma_addr) (char *); |
| void (*fd_set_dma_count) (int); |
| unsigned int (*get_dma_residue) (void); |
| int (*fd_request_irq) (void); |
| void (*fd_free_irq) (void); |
| int (*fd_eject) (int); |
| }; |
| |
| 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_fdops.fd_enable_dma() |
| #define fd_disable_dma() sun_fdops.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_fdops.fd_set_dma_mode(mode) |
| #define fd_set_dma_addr(addr) sun_fdops.fd_set_dma_addr(addr) |
| #define fd_set_dma_count(count) sun_fdops.fd_set_dma_count(count) |
| #define get_dma_residue(x) sun_fdops.get_dma_residue() |
| #define fd_request_irq() sun_fdops.fd_request_irq() |
| #define fd_free_irq() sun_fdops.fd_free_irq() |
| #define fd_eject(drive) sun_fdops.fd_eject(drive) |
| |
| /* Super paranoid... */ |
| #undef HAVE_DISABLE_HLT |
| |
| static int sun_floppy_types[2] = { 0, 0 }; |
| |
| /* 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 FLOPPY0_TYPE sun_floppy_init() |
| #define FLOPPY1_TYPE sun_floppy_types[1] |
| |
| #define FDC1 ((unsigned long)sun_fdc) |
| |
| #define N_FDC 1 |
| #define N_DRIVE 8 |
| |
| /* No 64k boundary crossing problems on the Sparc. */ |
| #define CROSS_64KB(a,s) (0) |
| |
| static unsigned char sun_82077_fd_inb(unsigned long port) |
| { |
| udelay(5); |
| switch(port & 7) { |
| default: |
| printk("floppy: Asked to read unknown port %lx\n", port); |
| panic("floppy: Port bolixed."); |
| case 4: /* FD_STATUS */ |
| return sbus_readb(&sun_fdc->status_82077) & ~STATUS_DMA; |
| case 5: /* FD_DATA */ |
| return sbus_readb(&sun_fdc->data_82077); |
| case 7: /* FD_DIR */ |
| /* XXX: Is DCL on 0x80 in sun4m? */ |
| return sbus_readb(&sun_fdc->dir_82077); |
| } |
| panic("sun_82072_fd_inb: How did I get here?"); |
| } |
| |
| static void sun_82077_fd_outb(unsigned char value, unsigned long port) |
| { |
| udelay(5); |
| switch(port & 7) { |
| default: |
| printk("floppy: Asked to write to unknown port %lx\n", port); |
| panic("floppy: Port bolixed."); |
| case 2: /* FD_DOR */ |
| /* Happily, the 82077 has a real DOR register. */ |
| sbus_writeb(value, &sun_fdc->dor_82077); |
| break; |
| case 5: /* FD_DATA */ |
| sbus_writeb(value, &sun_fdc->data_82077); |
| break; |
| case 7: /* FD_DCR */ |
| sbus_writeb(value, &sun_fdc->dcr_82077); |
| break; |
| case 4: /* FD_STATUS */ |
| sbus_writeb(value, &sun_fdc->status_82077); |
| 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 |
| */ |
| unsigned char *pdma_vaddr; |
| unsigned long pdma_size; |
| volatile int doing_pdma = 0; |
| |
| /* This is software state */ |
| char *pdma_base = NULL; |
| unsigned long pdma_areasize; |
| |
| /* Common routines to all controller types on the Sparc. */ |
| static void sun_fd_disable_dma(void) |
| { |
| doing_pdma = 0; |
| pdma_base = NULL; |
| } |
| |
| static 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 void sun_fd_set_dma_addr(char *buffer) |
| { |
| pdma_vaddr = buffer; |
| } |
| |
| static void sun_fd_set_dma_count(int length) |
| { |
| pdma_size = length; |
| } |
| |
| static void sun_fd_enable_dma(void) |
| { |
| pdma_base = pdma_vaddr; |
| pdma_areasize = pdma_size; |
| } |
| |
| irqreturn_t sparc_floppy_irq(int irq, void *dev_cookie) |
| { |
| if (likely(doing_pdma)) { |
| void __iomem *stat = (void __iomem *) fdc_status; |
| unsigned char *vaddr = pdma_vaddr; |
| unsigned long size = pdma_size; |
| u8 val; |
| |
| while (size) { |
| val = readb(stat); |
| if (unlikely(!(val & 0x80))) { |
| pdma_vaddr = vaddr; |
| pdma_size = size; |
| return IRQ_HANDLED; |
| } |
| if (unlikely(!(val & 0x20))) { |
| pdma_vaddr = vaddr; |
| pdma_size = size; |
| doing_pdma = 0; |
| goto main_interrupt; |
| } |
| if (val & 0x40) { |
| /* read */ |
| *vaddr++ = readb(stat + 1); |
| } else { |
| unsigned char data = *vaddr++; |
| |
| /* write */ |
| writeb(data, stat + 1); |
| } |
| size--; |
| } |
| |
| pdma_vaddr = vaddr; |
| pdma_size = size; |
| |
| /* Send Terminal Count pulse to floppy controller. */ |
| val = readb(auxio_register); |
| val |= AUXIO_AUX1_FTCNT; |
| writeb(val, auxio_register); |
| val &= ~AUXIO_AUX1_FTCNT; |
| writeb(val, auxio_register); |
| |
| doing_pdma = 0; |
| } |
| |
| main_interrupt: |
| return floppy_interrupt(irq, dev_cookie); |
| } |
| |
| static int sun_fd_request_irq(void) |
| { |
| static int once = 0; |
| int error; |
| |
| if(!once) { |
| once = 1; |
| |
| error = request_irq(FLOPPY_IRQ, sparc_floppy_irq, |
| 0, "floppy", NULL); |
| |
| return ((error == 0) ? 0 : -1); |
| } |
| return 0; |
| } |
| |
| static void sun_fd_free_irq(void) |
| { |
| } |
| |
| static unsigned int sun_get_dma_residue(void) |
| { |
| /* XXX This isn't really correct. XXX */ |
| return 0; |
| } |
| |
| static int sun_fd_eject(int drive) |
| { |
| set_dor(0x00, 0xff, 0x90); |
| udelay(500); |
| set_dor(0x00, 0x6f, 0x00); |
| udelay(500); |
| return 0; |
| } |
| |
| #include <asm/ebus_dma.h> |
| #include <asm/ns87303.h> |
| |
| static struct ebus_dma_info sun_pci_fd_ebus_dma; |
| static struct device *sun_floppy_dev; |
| static int sun_pci_broken_drive = -1; |
| |
| struct sun_pci_dma_op { |
| unsigned int addr; |
| int len; |
| int direction; |
| char *buf; |
| }; |
| static struct sun_pci_dma_op sun_pci_dma_current = { -1U, 0, 0, NULL}; |
| static struct sun_pci_dma_op sun_pci_dma_pending = { -1U, 0, 0, NULL}; |
| |
| irqreturn_t floppy_interrupt(int irq, void *dev_id); |
| |
| static unsigned char sun_pci_fd_inb(unsigned long port) |
| { |
| udelay(5); |
| return inb(port); |
| } |
| |
| static void sun_pci_fd_outb(unsigned char val, unsigned long port) |
| { |
| udelay(5); |
| outb(val, port); |
| } |
| |
| static void sun_pci_fd_broken_outb(unsigned char val, unsigned long port) |
| { |
| udelay(5); |
| /* |
| * XXX: Due to SUN's broken floppy connector on AX and AXi |
| * we need to turn on MOTOR_0 also, if the floppy is |
| * jumpered to DS1 (like most PC floppies are). I hope |
| * this does not hurt correct hardware like the AXmp. |
| * (Eddie, Sep 12 1998). |
| */ |
| if (port == ((unsigned long)sun_fdc) + 2) { |
| if (((val & 0x03) == sun_pci_broken_drive) && (val & 0x20)) { |
| val |= 0x10; |
| } |
| } |
| outb(val, port); |
| } |
| |
| #ifdef PCI_FDC_SWAP_DRIVES |
| static void sun_pci_fd_lde_broken_outb(unsigned char val, unsigned long port) |
| { |
| udelay(5); |
| /* |
| * XXX: Due to SUN's broken floppy connector on AX and AXi |
| * we need to turn on MOTOR_0 also, if the floppy is |
| * jumpered to DS1 (like most PC floppies are). I hope |
| * this does not hurt correct hardware like the AXmp. |
| * (Eddie, Sep 12 1998). |
| */ |
| if (port == ((unsigned long)sun_fdc) + 2) { |
| if (((val & 0x03) == sun_pci_broken_drive) && (val & 0x10)) { |
| val &= ~(0x03); |
| val |= 0x21; |
| } |
| } |
| outb(val, port); |
| } |
| #endif /* PCI_FDC_SWAP_DRIVES */ |
| |
| static void sun_pci_fd_enable_dma(void) |
| { |
| BUG_ON((NULL == sun_pci_dma_pending.buf) || |
| (0 == sun_pci_dma_pending.len) || |
| (0 == sun_pci_dma_pending.direction)); |
| |
| sun_pci_dma_current.buf = sun_pci_dma_pending.buf; |
| sun_pci_dma_current.len = sun_pci_dma_pending.len; |
| sun_pci_dma_current.direction = sun_pci_dma_pending.direction; |
| |
| sun_pci_dma_pending.buf = NULL; |
| sun_pci_dma_pending.len = 0; |
| sun_pci_dma_pending.direction = 0; |
| sun_pci_dma_pending.addr = -1U; |
| |
| sun_pci_dma_current.addr = |
| dma_map_single(sun_floppy_dev, |
| sun_pci_dma_current.buf, |
| sun_pci_dma_current.len, |
| sun_pci_dma_current.direction); |
| |
| ebus_dma_enable(&sun_pci_fd_ebus_dma, 1); |
| |
| if (ebus_dma_request(&sun_pci_fd_ebus_dma, |
| sun_pci_dma_current.addr, |
| sun_pci_dma_current.len)) |
| BUG(); |
| } |
| |
| static void sun_pci_fd_disable_dma(void) |
| { |
| ebus_dma_enable(&sun_pci_fd_ebus_dma, 0); |
| if (sun_pci_dma_current.addr != -1U) |
| dma_unmap_single(sun_floppy_dev, |
| sun_pci_dma_current.addr, |
| sun_pci_dma_current.len, |
| sun_pci_dma_current.direction); |
| sun_pci_dma_current.addr = -1U; |
| } |
| |
| static void sun_pci_fd_set_dma_mode(int mode) |
| { |
| if (mode == DMA_MODE_WRITE) |
| sun_pci_dma_pending.direction = DMA_TO_DEVICE; |
| else |
| sun_pci_dma_pending.direction = DMA_FROM_DEVICE; |
| |
| ebus_dma_prepare(&sun_pci_fd_ebus_dma, mode != DMA_MODE_WRITE); |
| } |
| |
| static void sun_pci_fd_set_dma_count(int length) |
| { |
| sun_pci_dma_pending.len = length; |
| } |
| |
| static void sun_pci_fd_set_dma_addr(char *buffer) |
| { |
| sun_pci_dma_pending.buf = buffer; |
| } |
| |
| static unsigned int sun_pci_get_dma_residue(void) |
| { |
| return ebus_dma_residue(&sun_pci_fd_ebus_dma); |
| } |
| |
| static int sun_pci_fd_request_irq(void) |
| { |
| return ebus_dma_irq_enable(&sun_pci_fd_ebus_dma, 1); |
| } |
| |
| static void sun_pci_fd_free_irq(void) |
| { |
| ebus_dma_irq_enable(&sun_pci_fd_ebus_dma, 0); |
| } |
| |
| static int sun_pci_fd_eject(int drive) |
| { |
| return -EINVAL; |
| } |
| |
| void sun_pci_fd_dma_callback(struct ebus_dma_info *p, int event, void *cookie) |
| { |
| floppy_interrupt(0, NULL); |
| } |
| |
| /* |
| * Floppy probing, we'd like to use /dev/fd0 for a single Floppy on PCI, |
| * even if this is configured using DS1, thus looks like /dev/fd1 with |
| * the cabling used in Ultras. |
| */ |
| #define DOR (port + 2) |
| #define MSR (port + 4) |
| #define FIFO (port + 5) |
| |
| static void sun_pci_fd_out_byte(unsigned long port, unsigned char val, |
| unsigned long reg) |
| { |
| unsigned char status; |
| int timeout = 1000; |
| |
| while (!((status = inb(MSR)) & 0x80) && --timeout) |
| udelay(100); |
| outb(val, reg); |
| } |
| |
| static unsigned char sun_pci_fd_sensei(unsigned long port) |
| { |
| unsigned char result[2] = { 0x70, 0x00 }; |
| unsigned char status; |
| int i = 0; |
| |
| sun_pci_fd_out_byte(port, 0x08, FIFO); |
| do { |
| int timeout = 1000; |
| |
| while (!((status = inb(MSR)) & 0x80) && --timeout) |
| udelay(100); |
| |
| if (!timeout) |
| break; |
| |
| if ((status & 0xf0) == 0xd0) |
| result[i++] = inb(FIFO); |
| else |
| break; |
| } while (i < 2); |
| |
| return result[0]; |
| } |
| |
| static void sun_pci_fd_reset(unsigned long port) |
| { |
| unsigned char mask = 0x00; |
| unsigned char status; |
| int timeout = 10000; |
| |
| outb(0x80, MSR); |
| do { |
| status = sun_pci_fd_sensei(port); |
| if ((status & 0xc0) == 0xc0) |
| mask |= 1 << (status & 0x03); |
| else |
| udelay(100); |
| } while ((mask != 0x0f) && --timeout); |
| } |
| |
| static int sun_pci_fd_test_drive(unsigned long port, int drive) |
| { |
| unsigned char status, data; |
| int timeout = 1000; |
| int ready; |
| |
| sun_pci_fd_reset(port); |
| |
| data = (0x10 << drive) | 0x0c | drive; |
| sun_pci_fd_out_byte(port, data, DOR); |
| |
| sun_pci_fd_out_byte(port, 0x07, FIFO); |
| sun_pci_fd_out_byte(port, drive & 0x03, FIFO); |
| |
| do { |
| udelay(100); |
| status = sun_pci_fd_sensei(port); |
| } while (((status & 0xc0) == 0x80) && --timeout); |
| |
| if (!timeout) |
| ready = 0; |
| else |
| ready = (status & 0x10) ? 0 : 1; |
| |
| sun_pci_fd_reset(port); |
| return ready; |
| } |
| #undef FIFO |
| #undef MSR |
| #undef DOR |
| |
| static int __init ebus_fdthree_p(struct device_node *dp) |
| { |
| if (of_node_name_eq(dp, "fdthree")) |
| return 1; |
| if (of_node_name_eq(dp, "floppy")) { |
| const char *compat; |
| |
| compat = of_get_property(dp, "compatible", NULL); |
| if (compat && !strcmp(compat, "fdthree")) |
| return 1; |
| } |
| return 0; |
| } |
| |
| static unsigned long __init sun_floppy_init(void) |
| { |
| static int initialized = 0; |
| struct device_node *dp; |
| struct platform_device *op; |
| const char *prop; |
| char state[128]; |
| |
| if (initialized) |
| return sun_floppy_types[0]; |
| initialized = 1; |
| |
| op = NULL; |
| |
| for_each_node_by_name(dp, "SUNW,fdtwo") { |
| if (!of_node_name_eq(dp->parent, "sbus")) |
| continue; |
| op = of_find_device_by_node(dp); |
| if (op) |
| break; |
| } |
| if (op) { |
| floppy_op = op; |
| FLOPPY_IRQ = op->archdata.irqs[0]; |
| } else { |
| struct device_node *ebus_dp; |
| void __iomem *auxio_reg; |
| const char *state_prop; |
| unsigned long config; |
| |
| dp = NULL; |
| for_each_node_by_name(ebus_dp, "ebus") { |
| for (dp = ebus_dp->child; dp; dp = dp->sibling) { |
| if (ebus_fdthree_p(dp)) |
| goto found_fdthree; |
| } |
| } |
| found_fdthree: |
| if (!dp) |
| return 0; |
| |
| op = of_find_device_by_node(dp); |
| if (!op) |
| return 0; |
| |
| state_prop = of_get_property(op->dev.of_node, "status", NULL); |
| if (state_prop && !strncmp(state_prop, "disabled", 8)) |
| return 0; |
| |
| FLOPPY_IRQ = op->archdata.irqs[0]; |
| |
| /* Make sure the high density bit is set, some systems |
| * (most notably Ultra5/Ultra10) come up with it clear. |
| */ |
| auxio_reg = (void __iomem *) op->resource[2].start; |
| writel(readl(auxio_reg)|0x2, auxio_reg); |
| |
| sun_floppy_dev = &op->dev; |
| |
| spin_lock_init(&sun_pci_fd_ebus_dma.lock); |
| |
| /* XXX ioremap */ |
| sun_pci_fd_ebus_dma.regs = (void __iomem *) |
| op->resource[1].start; |
| if (!sun_pci_fd_ebus_dma.regs) |
| return 0; |
| |
| sun_pci_fd_ebus_dma.flags = (EBUS_DMA_FLAG_USE_EBDMA_HANDLER | |
| EBUS_DMA_FLAG_TCI_DISABLE); |
| sun_pci_fd_ebus_dma.callback = sun_pci_fd_dma_callback; |
| sun_pci_fd_ebus_dma.client_cookie = NULL; |
| sun_pci_fd_ebus_dma.irq = FLOPPY_IRQ; |
| strcpy(sun_pci_fd_ebus_dma.name, "floppy"); |
| if (ebus_dma_register(&sun_pci_fd_ebus_dma)) |
| return 0; |
| |
| /* XXX ioremap */ |
| sun_fdc = (struct sun_flpy_controller *) op->resource[0].start; |
| |
| sun_fdops.fd_inb = sun_pci_fd_inb; |
| sun_fdops.fd_outb = sun_pci_fd_outb; |
| |
| can_use_virtual_dma = use_virtual_dma = 0; |
| sun_fdops.fd_enable_dma = sun_pci_fd_enable_dma; |
| sun_fdops.fd_disable_dma = sun_pci_fd_disable_dma; |
| sun_fdops.fd_set_dma_mode = sun_pci_fd_set_dma_mode; |
| sun_fdops.fd_set_dma_addr = sun_pci_fd_set_dma_addr; |
| sun_fdops.fd_set_dma_count = sun_pci_fd_set_dma_count; |
| sun_fdops.get_dma_residue = sun_pci_get_dma_residue; |
| |
| sun_fdops.fd_request_irq = sun_pci_fd_request_irq; |
| sun_fdops.fd_free_irq = sun_pci_fd_free_irq; |
| |
| sun_fdops.fd_eject = sun_pci_fd_eject; |
| |
| fdc_status = (unsigned long) &sun_fdc->status_82077; |
| |
| /* |
| * XXX: Find out on which machines this is really needed. |
| */ |
| if (1) { |
| sun_pci_broken_drive = 1; |
| sun_fdops.fd_outb = sun_pci_fd_broken_outb; |
| } |
| |
| allowed_drive_mask = 0; |
| if (sun_pci_fd_test_drive((unsigned long)sun_fdc, 0)) |
| sun_floppy_types[0] = 4; |
| if (sun_pci_fd_test_drive((unsigned long)sun_fdc, 1)) |
| sun_floppy_types[1] = 4; |
| |
| /* |
| * Find NS87303 SuperIO config registers (through ecpp). |
| */ |
| config = 0; |
| for (dp = ebus_dp->child; dp; dp = dp->sibling) { |
| if (of_node_name_eq(dp, "ecpp")) { |
| struct platform_device *ecpp_op; |
| |
| ecpp_op = of_find_device_by_node(dp); |
| if (ecpp_op) |
| config = ecpp_op->resource[1].start; |
| goto config_done; |
| } |
| } |
| config_done: |
| |
| /* |
| * Sanity check, is this really the NS87303? |
| */ |
| switch (config & 0x3ff) { |
| case 0x02e: |
| case 0x15c: |
| case 0x26e: |
| case 0x398: |
| break; |
| default: |
| config = 0; |
| } |
| |
| if (!config) |
| return sun_floppy_types[0]; |
| |
| /* Enable PC-AT mode. */ |
| ns87303_modify(config, ASC, 0, 0xc0); |
| |
| #ifdef PCI_FDC_SWAP_DRIVES |
| /* |
| * If only Floppy 1 is present, swap drives. |
| */ |
| if (!sun_floppy_types[0] && sun_floppy_types[1]) { |
| /* |
| * Set the drive exchange bit in FCR on NS87303, |
| * make sure other bits are sane before doing so. |
| */ |
| ns87303_modify(config, FER, FER_EDM, 0); |
| ns87303_modify(config, ASC, ASC_DRV2_SEL, 0); |
| ns87303_modify(config, FCR, 0, FCR_LDE); |
| |
| config = sun_floppy_types[0]; |
| sun_floppy_types[0] = sun_floppy_types[1]; |
| sun_floppy_types[1] = config; |
| |
| if (sun_pci_broken_drive != -1) { |
| sun_pci_broken_drive = 1 - sun_pci_broken_drive; |
| sun_fdops.fd_outb = sun_pci_fd_lde_broken_outb; |
| } |
| } |
| #endif /* PCI_FDC_SWAP_DRIVES */ |
| |
| return sun_floppy_types[0]; |
| } |
| prop = of_get_property(op->dev.of_node, "status", NULL); |
| if (prop && !strncmp(state, "disabled", 8)) |
| return 0; |
| |
| /* |
| * We cannot do of_ioremap here: it does request_region, |
| * which the generic floppy driver tries to do once again. |
| * But we must use the sdev resource values as they have |
| * had parent ranges applied. |
| */ |
| sun_fdc = (struct sun_flpy_controller *) |
| (op->resource[0].start + |
| ((op->resource[0].flags & 0x1ffUL) << 32UL)); |
| |
| /* Last minute sanity check... */ |
| if (sbus_readb(&sun_fdc->status1_82077) == 0xff) { |
| sun_fdc = (struct sun_flpy_controller *)-1; |
| return 0; |
| } |
| |
| sun_fdops.fd_inb = sun_82077_fd_inb; |
| sun_fdops.fd_outb = sun_82077_fd_outb; |
| |
| can_use_virtual_dma = use_virtual_dma = 1; |
| sun_fdops.fd_enable_dma = sun_fd_enable_dma; |
| sun_fdops.fd_disable_dma = sun_fd_disable_dma; |
| sun_fdops.fd_set_dma_mode = sun_fd_set_dma_mode; |
| sun_fdops.fd_set_dma_addr = sun_fd_set_dma_addr; |
| sun_fdops.fd_set_dma_count = sun_fd_set_dma_count; |
| sun_fdops.get_dma_residue = sun_get_dma_residue; |
| |
| sun_fdops.fd_request_irq = sun_fd_request_irq; |
| sun_fdops.fd_free_irq = sun_fd_free_irq; |
| |
| sun_fdops.fd_eject = sun_fd_eject; |
| |
| fdc_status = (unsigned long) &sun_fdc->status_82077; |
| |
| /* Success... */ |
| allowed_drive_mask = 0x01; |
| sun_floppy_types[0] = 4; |
| sun_floppy_types[1] = 0; |
| |
| return sun_floppy_types[0]; |
| } |
| |
| #define EXTRA_FLOPPY_PARAMS |
| |
| static DEFINE_SPINLOCK(dma_spin_lock); |
| |
| #define claim_dma_lock() \ |
| ({ unsigned long flags; \ |
| spin_lock_irqsave(&dma_spin_lock, flags); \ |
| flags; \ |
| }) |
| |
| #define release_dma_lock(__flags) \ |
| spin_unlock_irqrestore(&dma_spin_lock, __flags); |
| |
| #endif /* !(__ASM_SPARC64_FLOPPY_H) */ |