Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: floppy.h,v 1.32 2001/10/26 17:59:36 davem Exp $ |
| 2 | * asm-sparc64/floppy.h: Sparc specific parts of the Floppy driver. |
| 3 | * |
| 4 | * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) |
| 5 | * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
| 6 | * |
| 7 | * Ultra/PCI support added: Sep 1997 Eddie C. Dost (ecd@skynet.be) |
| 8 | */ |
| 9 | |
| 10 | #ifndef __ASM_SPARC64_FLOPPY_H |
| 11 | #define __ASM_SPARC64_FLOPPY_H |
| 12 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <linux/init.h> |
| 14 | |
| 15 | #include <asm/page.h> |
| 16 | #include <asm/pgtable.h> |
| 17 | #include <asm/system.h> |
| 18 | #include <asm/idprom.h> |
| 19 | #include <asm/oplib.h> |
| 20 | #include <asm/auxio.h> |
| 21 | #include <asm/sbus.h> |
| 22 | #include <asm/irq.h> |
| 23 | |
| 24 | |
| 25 | /* |
| 26 | * Define this to enable exchanging drive 0 and 1 if only drive 1 is |
| 27 | * probed on PCI machines. |
| 28 | */ |
| 29 | #undef PCI_FDC_SWAP_DRIVES |
| 30 | |
| 31 | |
| 32 | /* References: |
| 33 | * 1) Netbsd Sun floppy driver. |
| 34 | * 2) NCR 82077 controller manual |
| 35 | * 3) Intel 82077 controller manual |
| 36 | */ |
| 37 | struct sun_flpy_controller { |
| 38 | volatile unsigned char status1_82077; /* Auxiliary Status reg. 1 */ |
| 39 | volatile unsigned char status2_82077; /* Auxiliary Status reg. 2 */ |
| 40 | volatile unsigned char dor_82077; /* Digital Output reg. */ |
| 41 | volatile unsigned char tapectl_82077; /* Tape Control reg */ |
| 42 | volatile unsigned char status_82077; /* Main Status Register. */ |
| 43 | #define drs_82077 status_82077 /* Digital Rate Select reg. */ |
| 44 | volatile unsigned char data_82077; /* Data fifo. */ |
| 45 | volatile unsigned char ___unused; |
| 46 | volatile unsigned char dir_82077; /* Digital Input reg. */ |
| 47 | #define dcr_82077 dir_82077 /* Config Control reg. */ |
| 48 | }; |
| 49 | |
| 50 | /* You'll only ever find one controller on an Ultra anyways. */ |
| 51 | static struct sun_flpy_controller *sun_fdc = (struct sun_flpy_controller *)-1; |
| 52 | unsigned long fdc_status; |
| 53 | static struct sbus_dev *floppy_sdev = NULL; |
| 54 | |
| 55 | struct sun_floppy_ops { |
| 56 | unsigned char (*fd_inb) (unsigned long port); |
| 57 | void (*fd_outb) (unsigned char value, unsigned long port); |
| 58 | void (*fd_enable_dma) (void); |
| 59 | void (*fd_disable_dma) (void); |
| 60 | void (*fd_set_dma_mode) (int); |
| 61 | void (*fd_set_dma_addr) (char *); |
| 62 | void (*fd_set_dma_count) (int); |
| 63 | unsigned int (*get_dma_residue) (void); |
| 64 | int (*fd_request_irq) (void); |
| 65 | void (*fd_free_irq) (void); |
| 66 | int (*fd_eject) (int); |
| 67 | }; |
| 68 | |
| 69 | static struct sun_floppy_ops sun_fdops; |
| 70 | |
| 71 | #define fd_inb(port) sun_fdops.fd_inb(port) |
| 72 | #define fd_outb(value,port) sun_fdops.fd_outb(value,port) |
| 73 | #define fd_enable_dma() sun_fdops.fd_enable_dma() |
| 74 | #define fd_disable_dma() sun_fdops.fd_disable_dma() |
| 75 | #define fd_request_dma() (0) /* nothing... */ |
| 76 | #define fd_free_dma() /* nothing... */ |
| 77 | #define fd_clear_dma_ff() /* nothing... */ |
| 78 | #define fd_set_dma_mode(mode) sun_fdops.fd_set_dma_mode(mode) |
| 79 | #define fd_set_dma_addr(addr) sun_fdops.fd_set_dma_addr(addr) |
| 80 | #define fd_set_dma_count(count) sun_fdops.fd_set_dma_count(count) |
| 81 | #define get_dma_residue(x) sun_fdops.get_dma_residue() |
| 82 | #define fd_cacheflush(addr, size) /* nothing... */ |
| 83 | #define fd_request_irq() sun_fdops.fd_request_irq() |
| 84 | #define fd_free_irq() sun_fdops.fd_free_irq() |
| 85 | #define fd_eject(drive) sun_fdops.fd_eject(drive) |
| 86 | |
| 87 | static int FLOPPY_MOTOR_MASK = 0x10; |
| 88 | |
| 89 | /* Super paranoid... */ |
| 90 | #undef HAVE_DISABLE_HLT |
| 91 | |
| 92 | static int sun_floppy_types[2] = { 0, 0 }; |
| 93 | |
| 94 | /* Here is where we catch the floppy driver trying to initialize, |
| 95 | * therefore this is where we call the PROM device tree probing |
| 96 | * routine etc. on the Sparc. |
| 97 | */ |
| 98 | #define FLOPPY0_TYPE sun_floppy_init() |
| 99 | #define FLOPPY1_TYPE sun_floppy_types[1] |
| 100 | |
| 101 | #define FDC1 ((unsigned long)sun_fdc) |
| 102 | |
| 103 | #define N_FDC 1 |
| 104 | #define N_DRIVE 8 |
| 105 | |
| 106 | /* No 64k boundary crossing problems on the Sparc. */ |
| 107 | #define CROSS_64KB(a,s) (0) |
| 108 | |
| 109 | static unsigned char sun_82077_fd_inb(unsigned long port) |
| 110 | { |
| 111 | udelay(5); |
| 112 | switch(port & 7) { |
| 113 | default: |
| 114 | printk("floppy: Asked to read unknown port %lx\n", port); |
| 115 | panic("floppy: Port bolixed."); |
| 116 | case 4: /* FD_STATUS */ |
| 117 | return sbus_readb(&sun_fdc->status_82077) & ~STATUS_DMA; |
| 118 | case 5: /* FD_DATA */ |
| 119 | return sbus_readb(&sun_fdc->data_82077); |
| 120 | case 7: /* FD_DIR */ |
| 121 | /* XXX: Is DCL on 0x80 in sun4m? */ |
| 122 | return sbus_readb(&sun_fdc->dir_82077); |
| 123 | }; |
| 124 | panic("sun_82072_fd_inb: How did I get here?"); |
| 125 | } |
| 126 | |
| 127 | static void sun_82077_fd_outb(unsigned char value, unsigned long port) |
| 128 | { |
| 129 | udelay(5); |
| 130 | switch(port & 7) { |
| 131 | default: |
| 132 | printk("floppy: Asked to write to unknown port %lx\n", port); |
| 133 | panic("floppy: Port bolixed."); |
| 134 | case 2: /* FD_DOR */ |
| 135 | /* Happily, the 82077 has a real DOR register. */ |
| 136 | sbus_writeb(value, &sun_fdc->dor_82077); |
| 137 | break; |
| 138 | case 5: /* FD_DATA */ |
| 139 | sbus_writeb(value, &sun_fdc->data_82077); |
| 140 | break; |
| 141 | case 7: /* FD_DCR */ |
| 142 | sbus_writeb(value, &sun_fdc->dcr_82077); |
| 143 | break; |
| 144 | case 4: /* FD_STATUS */ |
| 145 | sbus_writeb(value, &sun_fdc->status_82077); |
| 146 | break; |
| 147 | }; |
| 148 | return; |
| 149 | } |
| 150 | |
| 151 | /* For pseudo-dma (Sun floppy drives have no real DMA available to |
| 152 | * them so we must eat the data fifo bytes directly ourselves) we have |
| 153 | * three state variables. doing_pdma tells our inline low-level |
| 154 | * assembly floppy interrupt entry point whether it should sit and eat |
| 155 | * bytes from the fifo or just transfer control up to the higher level |
| 156 | * floppy interrupt c-code. I tried very hard but I could not get the |
| 157 | * pseudo-dma to work in c-code without getting many overruns and |
| 158 | * underruns. If non-zero, doing_pdma encodes the direction of |
| 159 | * the transfer for debugging. 1=read 2=write |
| 160 | */ |
David S. Miller | 63b6145 | 2005-06-27 17:04:45 -0700 | [diff] [blame] | 161 | unsigned char *pdma_vaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | unsigned long pdma_size; |
| 163 | volatile int doing_pdma = 0; |
| 164 | |
| 165 | /* This is software state */ |
| 166 | char *pdma_base = NULL; |
| 167 | unsigned long pdma_areasize; |
| 168 | |
| 169 | /* Common routines to all controller types on the Sparc. */ |
| 170 | static void sun_fd_disable_dma(void) |
| 171 | { |
| 172 | doing_pdma = 0; |
| 173 | if (pdma_base) { |
| 174 | mmu_unlockarea(pdma_base, pdma_areasize); |
| 175 | pdma_base = NULL; |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | static void sun_fd_set_dma_mode(int mode) |
| 180 | { |
| 181 | switch(mode) { |
| 182 | case DMA_MODE_READ: |
| 183 | doing_pdma = 1; |
| 184 | break; |
| 185 | case DMA_MODE_WRITE: |
| 186 | doing_pdma = 2; |
| 187 | break; |
| 188 | default: |
| 189 | printk("Unknown dma mode %d\n", mode); |
| 190 | panic("floppy: Giving up..."); |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | static void sun_fd_set_dma_addr(char *buffer) |
| 195 | { |
| 196 | pdma_vaddr = buffer; |
| 197 | } |
| 198 | |
| 199 | static void sun_fd_set_dma_count(int length) |
| 200 | { |
| 201 | pdma_size = length; |
| 202 | } |
| 203 | |
| 204 | static void sun_fd_enable_dma(void) |
| 205 | { |
| 206 | pdma_vaddr = mmu_lockarea(pdma_vaddr, pdma_size); |
| 207 | pdma_base = pdma_vaddr; |
| 208 | pdma_areasize = pdma_size; |
| 209 | } |
| 210 | |
David S. Miller | 3505599 | 2006-06-25 01:32:25 -0700 | [diff] [blame] | 211 | irqreturn_t sparc_floppy_irq(int irq, void *dev_cookie, struct pt_regs *regs) |
| 212 | { |
| 213 | if (likely(doing_pdma)) { |
| 214 | void __iomem *stat = (void __iomem *) fdc_status; |
| 215 | unsigned char *vaddr = pdma_vaddr; |
| 216 | unsigned long size = pdma_size; |
| 217 | u8 val; |
| 218 | |
| 219 | while (size) { |
| 220 | val = readb(stat); |
| 221 | if (unlikely(!(val & 0x80))) { |
| 222 | pdma_vaddr = vaddr; |
| 223 | pdma_size = size; |
| 224 | return IRQ_HANDLED; |
| 225 | } |
| 226 | if (unlikely(!(val & 0x20))) { |
| 227 | pdma_vaddr = vaddr; |
| 228 | pdma_size = size; |
| 229 | doing_pdma = 0; |
| 230 | goto main_interrupt; |
| 231 | } |
| 232 | if (val & 0x40) { |
| 233 | /* read */ |
| 234 | *vaddr++ = readb(stat + 1); |
| 235 | } else { |
| 236 | unsigned char data = *vaddr++; |
| 237 | |
| 238 | /* write */ |
| 239 | writeb(data, stat + 1); |
| 240 | } |
| 241 | size--; |
| 242 | } |
| 243 | |
| 244 | pdma_vaddr = vaddr; |
| 245 | pdma_size = size; |
| 246 | |
| 247 | /* Send Terminal Count pulse to floppy controller. */ |
| 248 | val = readb(auxio_register); |
| 249 | val |= AUXIO_AUX1_FTCNT; |
| 250 | writeb(val, auxio_register); |
| 251 | val &= ~AUXIO_AUX1_FTCNT; |
| 252 | writeb(val, auxio_register); |
| 253 | |
| 254 | doing_pdma = 0; |
| 255 | } |
| 256 | |
| 257 | main_interrupt: |
| 258 | return floppy_interrupt(irq, dev_cookie, regs); |
| 259 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | |
| 261 | static int sun_fd_request_irq(void) |
| 262 | { |
| 263 | static int once = 0; |
| 264 | int error; |
| 265 | |
| 266 | if(!once) { |
| 267 | once = 1; |
| 268 | |
David S. Miller | 63b6145 | 2005-06-27 17:04:45 -0700 | [diff] [blame] | 269 | error = request_irq(FLOPPY_IRQ, sparc_floppy_irq, |
| 270 | SA_INTERRUPT, "floppy", NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | |
| 272 | return ((error == 0) ? 0 : -1); |
| 273 | } |
| 274 | return 0; |
| 275 | } |
| 276 | |
| 277 | static void sun_fd_free_irq(void) |
| 278 | { |
| 279 | } |
| 280 | |
| 281 | static unsigned int sun_get_dma_residue(void) |
| 282 | { |
| 283 | /* XXX This isn't really correct. XXX */ |
| 284 | return 0; |
| 285 | } |
| 286 | |
| 287 | static int sun_fd_eject(int drive) |
| 288 | { |
| 289 | set_dor(0x00, 0xff, 0x90); |
| 290 | udelay(500); |
| 291 | set_dor(0x00, 0x6f, 0x00); |
| 292 | udelay(500); |
| 293 | return 0; |
| 294 | } |
| 295 | |
| 296 | #ifdef CONFIG_PCI |
| 297 | #include <asm/ebus.h> |
| 298 | #include <asm/isa.h> |
| 299 | #include <asm/ns87303.h> |
| 300 | |
| 301 | static struct ebus_dma_info sun_pci_fd_ebus_dma; |
| 302 | static struct pci_dev *sun_pci_ebus_dev; |
| 303 | static int sun_pci_broken_drive = -1; |
| 304 | |
| 305 | struct sun_pci_dma_op { |
| 306 | unsigned int addr; |
| 307 | int len; |
| 308 | int direction; |
| 309 | char *buf; |
| 310 | }; |
| 311 | static struct sun_pci_dma_op sun_pci_dma_current = { -1U, 0, 0, NULL}; |
| 312 | static struct sun_pci_dma_op sun_pci_dma_pending = { -1U, 0, 0, NULL}; |
| 313 | |
| 314 | extern irqreturn_t floppy_interrupt(int irq, void *dev_id, struct pt_regs *regs); |
| 315 | |
| 316 | static unsigned char sun_pci_fd_inb(unsigned long port) |
| 317 | { |
| 318 | udelay(5); |
| 319 | return inb(port); |
| 320 | } |
| 321 | |
| 322 | static void sun_pci_fd_outb(unsigned char val, unsigned long port) |
| 323 | { |
| 324 | udelay(5); |
| 325 | outb(val, port); |
| 326 | } |
| 327 | |
| 328 | static void sun_pci_fd_broken_outb(unsigned char val, unsigned long port) |
| 329 | { |
| 330 | udelay(5); |
| 331 | /* |
| 332 | * XXX: Due to SUN's broken floppy connector on AX and AXi |
| 333 | * we need to turn on MOTOR_0 also, if the floppy is |
| 334 | * jumpered to DS1 (like most PC floppies are). I hope |
| 335 | * this does not hurt correct hardware like the AXmp. |
| 336 | * (Eddie, Sep 12 1998). |
| 337 | */ |
| 338 | if (port == ((unsigned long)sun_fdc) + 2) { |
| 339 | if (((val & 0x03) == sun_pci_broken_drive) && (val & 0x20)) { |
| 340 | val |= 0x10; |
| 341 | } |
| 342 | } |
| 343 | outb(val, port); |
| 344 | } |
| 345 | |
| 346 | #ifdef PCI_FDC_SWAP_DRIVES |
| 347 | static void sun_pci_fd_lde_broken_outb(unsigned char val, unsigned long port) |
| 348 | { |
| 349 | udelay(5); |
| 350 | /* |
| 351 | * XXX: Due to SUN's broken floppy connector on AX and AXi |
| 352 | * we need to turn on MOTOR_0 also, if the floppy is |
| 353 | * jumpered to DS1 (like most PC floppies are). I hope |
| 354 | * this does not hurt correct hardware like the AXmp. |
| 355 | * (Eddie, Sep 12 1998). |
| 356 | */ |
| 357 | if (port == ((unsigned long)sun_fdc) + 2) { |
| 358 | if (((val & 0x03) == sun_pci_broken_drive) && (val & 0x10)) { |
| 359 | val &= ~(0x03); |
| 360 | val |= 0x21; |
| 361 | } |
| 362 | } |
| 363 | outb(val, port); |
| 364 | } |
| 365 | #endif /* PCI_FDC_SWAP_DRIVES */ |
| 366 | |
| 367 | static void sun_pci_fd_enable_dma(void) |
| 368 | { |
| 369 | BUG_ON((NULL == sun_pci_dma_pending.buf) || |
| 370 | (0 == sun_pci_dma_pending.len) || |
| 371 | (0 == sun_pci_dma_pending.direction)); |
| 372 | |
| 373 | sun_pci_dma_current.buf = sun_pci_dma_pending.buf; |
| 374 | sun_pci_dma_current.len = sun_pci_dma_pending.len; |
| 375 | sun_pci_dma_current.direction = sun_pci_dma_pending.direction; |
| 376 | |
| 377 | sun_pci_dma_pending.buf = NULL; |
| 378 | sun_pci_dma_pending.len = 0; |
| 379 | sun_pci_dma_pending.direction = 0; |
| 380 | sun_pci_dma_pending.addr = -1U; |
| 381 | |
| 382 | sun_pci_dma_current.addr = |
| 383 | pci_map_single(sun_pci_ebus_dev, |
| 384 | sun_pci_dma_current.buf, |
| 385 | sun_pci_dma_current.len, |
| 386 | sun_pci_dma_current.direction); |
| 387 | |
| 388 | ebus_dma_enable(&sun_pci_fd_ebus_dma, 1); |
| 389 | |
| 390 | if (ebus_dma_request(&sun_pci_fd_ebus_dma, |
| 391 | sun_pci_dma_current.addr, |
| 392 | sun_pci_dma_current.len)) |
| 393 | BUG(); |
| 394 | } |
| 395 | |
| 396 | static void sun_pci_fd_disable_dma(void) |
| 397 | { |
| 398 | ebus_dma_enable(&sun_pci_fd_ebus_dma, 0); |
| 399 | if (sun_pci_dma_current.addr != -1U) |
| 400 | pci_unmap_single(sun_pci_ebus_dev, |
| 401 | sun_pci_dma_current.addr, |
| 402 | sun_pci_dma_current.len, |
| 403 | sun_pci_dma_current.direction); |
| 404 | sun_pci_dma_current.addr = -1U; |
| 405 | } |
| 406 | |
| 407 | static void sun_pci_fd_set_dma_mode(int mode) |
| 408 | { |
| 409 | if (mode == DMA_MODE_WRITE) |
| 410 | sun_pci_dma_pending.direction = PCI_DMA_TODEVICE; |
| 411 | else |
| 412 | sun_pci_dma_pending.direction = PCI_DMA_FROMDEVICE; |
| 413 | |
| 414 | ebus_dma_prepare(&sun_pci_fd_ebus_dma, mode != DMA_MODE_WRITE); |
| 415 | } |
| 416 | |
| 417 | static void sun_pci_fd_set_dma_count(int length) |
| 418 | { |
| 419 | sun_pci_dma_pending.len = length; |
| 420 | } |
| 421 | |
| 422 | static void sun_pci_fd_set_dma_addr(char *buffer) |
| 423 | { |
| 424 | sun_pci_dma_pending.buf = buffer; |
| 425 | } |
| 426 | |
| 427 | static unsigned int sun_pci_get_dma_residue(void) |
| 428 | { |
| 429 | return ebus_dma_residue(&sun_pci_fd_ebus_dma); |
| 430 | } |
| 431 | |
| 432 | static int sun_pci_fd_request_irq(void) |
| 433 | { |
| 434 | return ebus_dma_irq_enable(&sun_pci_fd_ebus_dma, 1); |
| 435 | } |
| 436 | |
| 437 | static void sun_pci_fd_free_irq(void) |
| 438 | { |
| 439 | ebus_dma_irq_enable(&sun_pci_fd_ebus_dma, 0); |
| 440 | } |
| 441 | |
| 442 | static int sun_pci_fd_eject(int drive) |
| 443 | { |
| 444 | return -EINVAL; |
| 445 | } |
| 446 | |
| 447 | void sun_pci_fd_dma_callback(struct ebus_dma_info *p, int event, void *cookie) |
| 448 | { |
| 449 | floppy_interrupt(0, NULL, NULL); |
| 450 | } |
| 451 | |
| 452 | /* |
| 453 | * Floppy probing, we'd like to use /dev/fd0 for a single Floppy on PCI, |
| 454 | * even if this is configured using DS1, thus looks like /dev/fd1 with |
| 455 | * the cabling used in Ultras. |
| 456 | */ |
| 457 | #define DOR (port + 2) |
| 458 | #define MSR (port + 4) |
| 459 | #define FIFO (port + 5) |
| 460 | |
| 461 | static void sun_pci_fd_out_byte(unsigned long port, unsigned char val, |
| 462 | unsigned long reg) |
| 463 | { |
| 464 | unsigned char status; |
| 465 | int timeout = 1000; |
| 466 | |
| 467 | while (!((status = inb(MSR)) & 0x80) && --timeout) |
| 468 | udelay(100); |
| 469 | outb(val, reg); |
| 470 | } |
| 471 | |
| 472 | static unsigned char sun_pci_fd_sensei(unsigned long port) |
| 473 | { |
| 474 | unsigned char result[2] = { 0x70, 0x00 }; |
| 475 | unsigned char status; |
| 476 | int i = 0; |
| 477 | |
| 478 | sun_pci_fd_out_byte(port, 0x08, FIFO); |
| 479 | do { |
| 480 | int timeout = 1000; |
| 481 | |
| 482 | while (!((status = inb(MSR)) & 0x80) && --timeout) |
| 483 | udelay(100); |
| 484 | |
| 485 | if (!timeout) |
| 486 | break; |
| 487 | |
| 488 | if ((status & 0xf0) == 0xd0) |
| 489 | result[i++] = inb(FIFO); |
| 490 | else |
| 491 | break; |
| 492 | } while (i < 2); |
| 493 | |
| 494 | return result[0]; |
| 495 | } |
| 496 | |
| 497 | static void sun_pci_fd_reset(unsigned long port) |
| 498 | { |
| 499 | unsigned char mask = 0x00; |
| 500 | unsigned char status; |
| 501 | int timeout = 10000; |
| 502 | |
| 503 | outb(0x80, MSR); |
| 504 | do { |
| 505 | status = sun_pci_fd_sensei(port); |
| 506 | if ((status & 0xc0) == 0xc0) |
| 507 | mask |= 1 << (status & 0x03); |
| 508 | else |
| 509 | udelay(100); |
| 510 | } while ((mask != 0x0f) && --timeout); |
| 511 | } |
| 512 | |
| 513 | static int sun_pci_fd_test_drive(unsigned long port, int drive) |
| 514 | { |
| 515 | unsigned char status, data; |
| 516 | int timeout = 1000; |
| 517 | int ready; |
| 518 | |
| 519 | sun_pci_fd_reset(port); |
| 520 | |
| 521 | data = (0x10 << drive) | 0x0c | drive; |
| 522 | sun_pci_fd_out_byte(port, data, DOR); |
| 523 | |
| 524 | sun_pci_fd_out_byte(port, 0x07, FIFO); |
| 525 | sun_pci_fd_out_byte(port, drive & 0x03, FIFO); |
| 526 | |
| 527 | do { |
| 528 | udelay(100); |
| 529 | status = sun_pci_fd_sensei(port); |
| 530 | } while (((status & 0xc0) == 0x80) && --timeout); |
| 531 | |
| 532 | if (!timeout) |
| 533 | ready = 0; |
| 534 | else |
| 535 | ready = (status & 0x10) ? 0 : 1; |
| 536 | |
| 537 | sun_pci_fd_reset(port); |
| 538 | return ready; |
| 539 | } |
| 540 | #undef FIFO |
| 541 | #undef MSR |
| 542 | #undef DOR |
| 543 | |
| 544 | #endif /* CONFIG_PCI */ |
| 545 | |
| 546 | #ifdef CONFIG_PCI |
| 547 | static int __init ebus_fdthree_p(struct linux_ebus_device *edev) |
| 548 | { |
David S. Miller | 690c8fd | 2006-06-22 19:12:03 -0700 | [diff] [blame] | 549 | if (!strcmp(edev->prom_node->name, "fdthree")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | return 1; |
David S. Miller | 690c8fd | 2006-06-22 19:12:03 -0700 | [diff] [blame] | 551 | if (!strcmp(edev->prom_node->name, "floppy")) { |
| 552 | char *compat; |
| 553 | |
| 554 | compat = of_get_property(edev->prom_node, |
| 555 | "compatible", NULL); |
| 556 | if (compat && !strcmp(compat, "fdthree")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | return 1; |
| 558 | } |
| 559 | return 0; |
| 560 | } |
| 561 | #endif |
| 562 | |
| 563 | #ifdef CONFIG_PCI |
| 564 | #undef ISA_FLOPPY_WORKS |
| 565 | |
| 566 | #ifdef ISA_FLOPPY_WORKS |
| 567 | static unsigned long __init isa_floppy_init(void) |
| 568 | { |
| 569 | struct sparc_isa_bridge *isa_br; |
| 570 | struct sparc_isa_device *isa_dev = NULL; |
| 571 | |
| 572 | for_each_isa(isa_br) { |
| 573 | for_each_isadev(isa_dev, isa_br) { |
David S. Miller | 690c8fd | 2006-06-22 19:12:03 -0700 | [diff] [blame] | 574 | if (!strcmp(isa_dev->prom_node->name, "dma")) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | struct sparc_isa_device *child = |
| 576 | isa_dev->child; |
| 577 | |
| 578 | while (child) { |
David S. Miller | 690c8fd | 2006-06-22 19:12:03 -0700 | [diff] [blame] | 579 | if (!strcmp(child->prom_node->name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | "floppy")) { |
| 581 | isa_dev = child; |
| 582 | goto isa_done; |
| 583 | } |
| 584 | child = child->next; |
| 585 | } |
| 586 | } |
| 587 | } |
| 588 | } |
| 589 | isa_done: |
| 590 | if (!isa_dev) |
| 591 | return 0; |
| 592 | |
| 593 | /* We could use DMA on devices behind the ISA bridge, but... |
| 594 | * |
| 595 | * There is a slight problem. Normally on x86 kit the x86 processor |
| 596 | * delays I/O port instructions when the ISA bus "dma in progress" |
| 597 | * signal is active. Well, sparc64 systems do not monitor this |
| 598 | * signal thus we would need to block all I/O port accesses in software |
| 599 | * when a dma transfer is active for some device. |
| 600 | */ |
| 601 | |
| 602 | sun_fdc = (struct sun_flpy_controller *)isa_dev->resource.start; |
| 603 | FLOPPY_IRQ = isa_dev->irq; |
| 604 | |
| 605 | sun_fdops.fd_inb = sun_pci_fd_inb; |
| 606 | sun_fdops.fd_outb = sun_pci_fd_outb; |
| 607 | |
| 608 | can_use_virtual_dma = use_virtual_dma = 1; |
| 609 | sun_fdops.fd_enable_dma = sun_fd_enable_dma; |
| 610 | sun_fdops.fd_disable_dma = sun_fd_disable_dma; |
| 611 | sun_fdops.fd_set_dma_mode = sun_fd_set_dma_mode; |
| 612 | sun_fdops.fd_set_dma_addr = sun_fd_set_dma_addr; |
| 613 | sun_fdops.fd_set_dma_count = sun_fd_set_dma_count; |
| 614 | sun_fdops.get_dma_residue = sun_get_dma_residue; |
| 615 | |
| 616 | sun_fdops.fd_request_irq = sun_fd_request_irq; |
| 617 | sun_fdops.fd_free_irq = sun_fd_free_irq; |
| 618 | |
| 619 | /* Floppy eject is manual. Actually, could determine this |
| 620 | * via presence of 'manual' property in OBP node. |
| 621 | */ |
| 622 | sun_fdops.fd_eject = sun_pci_fd_eject; |
| 623 | |
| 624 | fdc_status = (unsigned long) &sun_fdc->status_82077; |
| 625 | FLOPPY_MOTOR_MASK = 0xf0; |
| 626 | |
| 627 | allowed_drive_mask = 0; |
| 628 | sun_floppy_types[0] = 0; |
| 629 | sun_floppy_types[1] = 4; |
| 630 | |
| 631 | sun_pci_broken_drive = 1; |
| 632 | sun_fdops.fd_outb = sun_pci_fd_broken_outb; |
| 633 | |
| 634 | return sun_floppy_types[0]; |
| 635 | } |
| 636 | #endif /* ISA_FLOPPY_WORKS */ |
| 637 | |
| 638 | #endif |
| 639 | |
| 640 | static unsigned long __init sun_floppy_init(void) |
| 641 | { |
| 642 | char state[128]; |
| 643 | struct sbus_bus *bus; |
| 644 | struct sbus_dev *sdev = NULL; |
| 645 | static int initialized = 0; |
| 646 | |
| 647 | if (initialized) |
| 648 | return sun_floppy_types[0]; |
| 649 | initialized = 1; |
| 650 | |
| 651 | for_all_sbusdev (sdev, bus) { |
| 652 | if (!strcmp(sdev->prom_name, "SUNW,fdtwo")) |
| 653 | break; |
| 654 | } |
| 655 | if(sdev) { |
| 656 | floppy_sdev = sdev; |
| 657 | FLOPPY_IRQ = sdev->irqs[0]; |
| 658 | } else { |
| 659 | #ifdef CONFIG_PCI |
| 660 | struct linux_ebus *ebus; |
| 661 | struct linux_ebus_device *edev = NULL; |
| 662 | unsigned long config = 0; |
David S. Miller | 63b6145 | 2005-06-27 17:04:45 -0700 | [diff] [blame] | 663 | void __iomem *auxio_reg; |
David S. Miller | 690c8fd | 2006-06-22 19:12:03 -0700 | [diff] [blame] | 664 | char *state_prop; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | |
| 666 | for_each_ebus(ebus) { |
| 667 | for_each_ebusdev(edev, ebus) { |
| 668 | if (ebus_fdthree_p(edev)) |
| 669 | goto ebus_done; |
| 670 | } |
| 671 | } |
| 672 | ebus_done: |
| 673 | if (!edev) { |
| 674 | #ifdef ISA_FLOPPY_WORKS |
| 675 | return isa_floppy_init(); |
| 676 | #else |
| 677 | return 0; |
| 678 | #endif |
| 679 | } |
| 680 | |
David S. Miller | 690c8fd | 2006-06-22 19:12:03 -0700 | [diff] [blame] | 681 | state_prop = of_get_property(edev->prom_node, "status", NULL); |
| 682 | if (state_prop && !strncmp(state_prop, "disabled", 8)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | return 0; |
| 684 | |
| 685 | FLOPPY_IRQ = edev->irqs[0]; |
| 686 | |
| 687 | /* Make sure the high density bit is set, some systems |
| 688 | * (most notably Ultra5/Ultra10) come up with it clear. |
| 689 | */ |
David S. Miller | 63b6145 | 2005-06-27 17:04:45 -0700 | [diff] [blame] | 690 | auxio_reg = (void __iomem *) edev->resource[2].start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | writel(readl(auxio_reg)|0x2, auxio_reg); |
| 692 | |
| 693 | sun_pci_ebus_dev = ebus->self; |
| 694 | |
| 695 | spin_lock_init(&sun_pci_fd_ebus_dma.lock); |
| 696 | |
| 697 | /* XXX ioremap */ |
David S. Miller | 63b6145 | 2005-06-27 17:04:45 -0700 | [diff] [blame] | 698 | sun_pci_fd_ebus_dma.regs = (void __iomem *) |
| 699 | edev->resource[1].start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | if (!sun_pci_fd_ebus_dma.regs) |
| 701 | return 0; |
| 702 | |
| 703 | sun_pci_fd_ebus_dma.flags = (EBUS_DMA_FLAG_USE_EBDMA_HANDLER | |
| 704 | EBUS_DMA_FLAG_TCI_DISABLE); |
| 705 | sun_pci_fd_ebus_dma.callback = sun_pci_fd_dma_callback; |
| 706 | sun_pci_fd_ebus_dma.client_cookie = NULL; |
| 707 | sun_pci_fd_ebus_dma.irq = FLOPPY_IRQ; |
| 708 | strcpy(sun_pci_fd_ebus_dma.name, "floppy"); |
| 709 | if (ebus_dma_register(&sun_pci_fd_ebus_dma)) |
| 710 | return 0; |
| 711 | |
| 712 | /* XXX ioremap */ |
| 713 | sun_fdc = (struct sun_flpy_controller *)edev->resource[0].start; |
| 714 | |
| 715 | sun_fdops.fd_inb = sun_pci_fd_inb; |
| 716 | sun_fdops.fd_outb = sun_pci_fd_outb; |
| 717 | |
| 718 | can_use_virtual_dma = use_virtual_dma = 0; |
| 719 | sun_fdops.fd_enable_dma = sun_pci_fd_enable_dma; |
| 720 | sun_fdops.fd_disable_dma = sun_pci_fd_disable_dma; |
| 721 | sun_fdops.fd_set_dma_mode = sun_pci_fd_set_dma_mode; |
| 722 | sun_fdops.fd_set_dma_addr = sun_pci_fd_set_dma_addr; |
| 723 | sun_fdops.fd_set_dma_count = sun_pci_fd_set_dma_count; |
| 724 | sun_fdops.get_dma_residue = sun_pci_get_dma_residue; |
| 725 | |
| 726 | sun_fdops.fd_request_irq = sun_pci_fd_request_irq; |
| 727 | sun_fdops.fd_free_irq = sun_pci_fd_free_irq; |
| 728 | |
| 729 | sun_fdops.fd_eject = sun_pci_fd_eject; |
| 730 | |
| 731 | fdc_status = (unsigned long) &sun_fdc->status_82077; |
| 732 | FLOPPY_MOTOR_MASK = 0xf0; |
| 733 | |
| 734 | /* |
| 735 | * XXX: Find out on which machines this is really needed. |
| 736 | */ |
| 737 | if (1) { |
| 738 | sun_pci_broken_drive = 1; |
| 739 | sun_fdops.fd_outb = sun_pci_fd_broken_outb; |
| 740 | } |
| 741 | |
| 742 | allowed_drive_mask = 0; |
| 743 | if (sun_pci_fd_test_drive((unsigned long)sun_fdc, 0)) |
| 744 | sun_floppy_types[0] = 4; |
| 745 | if (sun_pci_fd_test_drive((unsigned long)sun_fdc, 1)) |
| 746 | sun_floppy_types[1] = 4; |
| 747 | |
| 748 | /* |
| 749 | * Find NS87303 SuperIO config registers (through ecpp). |
| 750 | */ |
| 751 | for_each_ebus(ebus) { |
| 752 | for_each_ebusdev(edev, ebus) { |
David S. Miller | 690c8fd | 2006-06-22 19:12:03 -0700 | [diff] [blame] | 753 | if (!strcmp(edev->prom_node->name, "ecpp")) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | config = edev->resource[1].start; |
| 755 | goto config_done; |
| 756 | } |
| 757 | } |
| 758 | } |
| 759 | config_done: |
| 760 | |
| 761 | /* |
| 762 | * Sanity check, is this really the NS87303? |
| 763 | */ |
| 764 | switch (config & 0x3ff) { |
| 765 | case 0x02e: |
| 766 | case 0x15c: |
| 767 | case 0x26e: |
| 768 | case 0x398: |
| 769 | break; |
| 770 | default: |
| 771 | config = 0; |
| 772 | } |
| 773 | |
| 774 | if (!config) |
| 775 | return sun_floppy_types[0]; |
| 776 | |
| 777 | /* Enable PC-AT mode. */ |
| 778 | ns87303_modify(config, ASC, 0, 0xc0); |
| 779 | |
| 780 | #ifdef PCI_FDC_SWAP_DRIVES |
| 781 | /* |
| 782 | * If only Floppy 1 is present, swap drives. |
| 783 | */ |
| 784 | if (!sun_floppy_types[0] && sun_floppy_types[1]) { |
| 785 | /* |
| 786 | * Set the drive exchange bit in FCR on NS87303, |
Alexey Dobriyan | 7f927fc | 2006-03-28 01:56:53 -0800 | [diff] [blame] | 787 | * make sure other bits are sane before doing so. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | */ |
| 789 | ns87303_modify(config, FER, FER_EDM, 0); |
| 790 | ns87303_modify(config, ASC, ASC_DRV2_SEL, 0); |
| 791 | ns87303_modify(config, FCR, 0, FCR_LDE); |
| 792 | |
| 793 | config = sun_floppy_types[0]; |
| 794 | sun_floppy_types[0] = sun_floppy_types[1]; |
| 795 | sun_floppy_types[1] = config; |
| 796 | |
| 797 | if (sun_pci_broken_drive != -1) { |
| 798 | sun_pci_broken_drive = 1 - sun_pci_broken_drive; |
| 799 | sun_fdops.fd_outb = sun_pci_fd_lde_broken_outb; |
| 800 | } |
| 801 | } |
| 802 | #endif /* PCI_FDC_SWAP_DRIVES */ |
| 803 | |
| 804 | return sun_floppy_types[0]; |
| 805 | #else |
| 806 | return 0; |
| 807 | #endif |
| 808 | } |
| 809 | prom_getproperty(sdev->prom_node, "status", state, sizeof(state)); |
| 810 | if(!strncmp(state, "disabled", 8)) |
| 811 | return 0; |
| 812 | |
| 813 | /* |
| 814 | * We cannot do sbus_ioremap here: it does request_region, |
| 815 | * which the generic floppy driver tries to do once again. |
| 816 | * But we must use the sdev resource values as they have |
| 817 | * had parent ranges applied. |
| 818 | */ |
| 819 | sun_fdc = (struct sun_flpy_controller *) |
| 820 | (sdev->resource[0].start + |
| 821 | ((sdev->resource[0].flags & 0x1ffUL) << 32UL)); |
| 822 | |
| 823 | /* Last minute sanity check... */ |
| 824 | if(sbus_readb(&sun_fdc->status1_82077) == 0xff) { |
| 825 | sun_fdc = (struct sun_flpy_controller *)-1; |
| 826 | return 0; |
| 827 | } |
| 828 | |
| 829 | sun_fdops.fd_inb = sun_82077_fd_inb; |
| 830 | sun_fdops.fd_outb = sun_82077_fd_outb; |
| 831 | |
| 832 | can_use_virtual_dma = use_virtual_dma = 1; |
| 833 | sun_fdops.fd_enable_dma = sun_fd_enable_dma; |
| 834 | sun_fdops.fd_disable_dma = sun_fd_disable_dma; |
| 835 | sun_fdops.fd_set_dma_mode = sun_fd_set_dma_mode; |
| 836 | sun_fdops.fd_set_dma_addr = sun_fd_set_dma_addr; |
| 837 | sun_fdops.fd_set_dma_count = sun_fd_set_dma_count; |
| 838 | sun_fdops.get_dma_residue = sun_get_dma_residue; |
| 839 | |
| 840 | sun_fdops.fd_request_irq = sun_fd_request_irq; |
| 841 | sun_fdops.fd_free_irq = sun_fd_free_irq; |
| 842 | |
| 843 | sun_fdops.fd_eject = sun_fd_eject; |
| 844 | |
| 845 | fdc_status = (unsigned long) &sun_fdc->status_82077; |
| 846 | |
| 847 | /* Success... */ |
| 848 | allowed_drive_mask = 0x01; |
| 849 | sun_floppy_types[0] = 4; |
| 850 | sun_floppy_types[1] = 0; |
| 851 | |
| 852 | return sun_floppy_types[0]; |
| 853 | } |
| 854 | |
| 855 | #define EXTRA_FLOPPY_PARAMS |
| 856 | |
| 857 | #endif /* !(__ASM_SPARC64_FLOPPY_H) */ |