kauai.c revision 1.35
1 /* $NetBSD: kauai.c,v 1.35 2014/03/29 19:28:29 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2003 Tsubai Masanari. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: kauai.c,v 1.35 2014/03/29 19:28:29 christos Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/device.h> 35 #include <sys/malloc.h> 36 37 #include <uvm/uvm_extern.h> 38 39 #include <sys/bus.h> 40 #include <machine/pio.h> 41 42 #include <dev/ata/atareg.h> 43 #include <dev/ata/atavar.h> 44 #include <dev/ic/wdcvar.h> 45 46 #include <dev/ofw/openfirm.h> 47 48 #include <dev/pci/pcivar.h> 49 #include <dev/pci/pcireg.h> 50 #include <dev/pci/pcidevs.h> 51 52 #include <macppc/dev/dbdma.h> 53 54 #define WDC_REG_NPORTS 8 55 #define WDC_AUXREG_OFFSET 0x16 56 #define WDC_AUXREG_NPORTS 1 57 58 #define PIO_CONFIG_REG 0x200 /* PIO and DMA access timing */ 59 #define DMA_CONFIG_REG 0x210 /* UDMA access timing */ 60 61 struct kauai_softc { 62 struct wdc_softc sc_wdcdev; 63 struct ata_channel *sc_chanptr; 64 struct ata_channel sc_channel; 65 struct wdc_regs sc_wdc_regs; 66 struct ata_queue sc_queue; 67 dbdma_regmap_t *sc_dmareg; 68 dbdma_command_t *sc_dmacmd; 69 u_int sc_piotiming_r[2]; 70 u_int sc_piotiming_w[2]; 71 u_int sc_dmatiming_r[2]; 72 u_int sc_dmatiming_w[2]; 73 void (*sc_calc_timing)(struct kauai_softc *, int); 74 }; 75 76 static int kauai_match(device_t, cfdata_t, void *); 77 static void kauai_attach(device_t, device_t, void *); 78 static int kauai_dma_init(void *, int, int, void *, size_t, int); 79 static void kauai_dma_start(void *, int, int); 80 static int kauai_dma_finish(void *, int, int, int); 81 static void kauai_set_modes(struct ata_channel *); 82 static void calc_timing_kauai(struct kauai_softc *, int); 83 84 CFATTACH_DECL_NEW(kauai, sizeof(struct kauai_softc), 85 kauai_match, kauai_attach, NULL, NULL); 86 87 int 88 kauai_match(device_t parent, cfdata_t match, void *aux) 89 { 90 struct pci_attach_args *pa = aux; 91 92 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_APPLE) { 93 switch (PCI_PRODUCT(pa->pa_id)) { 94 case PCI_PRODUCT_APPLE_KAUAI: 95 case PCI_PRODUCT_APPLE_UNINORTH_ATA: 96 case PCI_PRODUCT_APPLE_INTREPID2_ATA: 97 case PCI_PRODUCT_APPLE_SHASTA_ATA: 98 return 5; 99 } 100 } 101 102 return 0; 103 } 104 105 void 106 kauai_attach(device_t parent, device_t self, void *aux) 107 { 108 struct kauai_softc *sc = device_private(self); 109 struct pci_attach_args *pa = aux; 110 struct ata_channel *chp = &sc->sc_channel; 111 struct wdc_regs *wdr; 112 pci_intr_handle_t ih; 113 paddr_t regbase, dmabase; 114 int node, reg[5], i; 115 uint32_t intrs[4], intr; 116 char buf[PCI_INTRSTR_LEN]; 117 118 sc->sc_wdcdev.sc_atac.atac_dev = self; 119 120 sc->sc_dmacmd = dbdma_alloc(sizeof(dbdma_command_t) * 20); 121 node = pcidev_to_ofdev(pa->pa_pc, pa->pa_tag); 122 if (node == 0) { 123 aprint_error(": cannot find kauai node\n"); 124 return; 125 } 126 127 if (OF_getprop(node, "assigned-addresses", reg, sizeof reg) < 12) { 128 aprint_error(": cannot get address property\n"); 129 return; 130 } 131 regbase = reg[2] + 0x2000; 132 dmabase = reg[2] + 0x1000; 133 134 /* 135 * XXX PCI_INTERRUPT_REG seems to be wired to 0. 136 * XXX So use fixed intrpin and intrline values if the interrupts 137 * XXX property contains no IRQ line 138 */ 139 intr = 0; 140 pa->pa_intrpin = 1; 141 if (OF_getprop(node, "interrupts", intrs, sizeof(intrs)) >= 4) { 142 intr = intrs[0]; 143 /* 144 * the interrupts property on my iBook G4's kauai contains 145 * 0x00000001 0x00000000, so fix that up here 146 * TODO: use parent's interrupt-map property to do this right 147 */ 148 if (intr < 10) 149 intr = 0; 150 aprint_debug_dev(self, 151 "got %d from interrupts property\n", intr); 152 } 153 if (intr == 0) { 154 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_SHASTA_ATA) { 155 intr = 38; 156 } else 157 intr = 39; 158 } 159 pa->pa_intrline = intr; 160 161 if (pci_intr_map(pa, &ih)) { 162 aprint_error(": unable to map interrupt\n"); 163 return; 164 } 165 aprint_normal(": interrupting at %s\n", pci_intr_string(pa->pa_pc, ih, 166 buf, sizeof(buf))); 167 168 sc->sc_wdcdev.regs = wdr = &sc->sc_wdc_regs; 169 170 wdr->cmd_iot = wdr->ctl_iot = pa->pa_memt; 171 172 if (bus_space_map(wdr->cmd_iot, regbase, WDC_REG_NPORTS << 4, 0, 173 &wdr->cmd_baseioh) || 174 bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, 175 WDC_AUXREG_OFFSET << 4, 1, &wdr->ctl_ioh)) { 176 aprint_error_dev(self, "couldn't map registers\n"); 177 return; 178 } 179 for (i = 0; i < WDC_NREG; i++) { 180 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, i << 4, 181 i == 0 ? 4 : 1, &wdr->cmd_iohs[i]) != 0) { 182 bus_space_unmap(wdr->cmd_iot, wdr->cmd_baseioh, 183 WDC_REG_NPORTS << 4); 184 aprint_error_dev(self, 185 "couldn't subregion registers\n"); 186 return; 187 } 188 } 189 190 if (pci_intr_establish(pa->pa_pc, ih, IPL_BIO, wdcintr, chp) == NULL) { 191 aprint_error_dev(self, "unable to establish interrupt\n"); 192 return; 193 } 194 195 196 sc->sc_wdcdev.sc_atac.atac_pio_cap = 4; 197 sc->sc_wdcdev.sc_atac.atac_dma_cap = 2; 198 sc->sc_wdcdev.sc_atac.atac_udma_cap = 5; 199 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16; 200 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA | ATAC_CAP_UDMA; 201 sc->sc_chanptr = chp; 202 sc->sc_wdcdev.sc_atac.atac_channels = &sc->sc_chanptr; 203 sc->sc_wdcdev.sc_atac.atac_nchannels = 1; 204 sc->sc_wdcdev.wdc_maxdrives = 2; 205 sc->sc_wdcdev.dma_arg = sc; 206 sc->sc_wdcdev.dma_init = kauai_dma_init; 207 sc->sc_wdcdev.dma_start = kauai_dma_start; 208 sc->sc_wdcdev.dma_finish = kauai_dma_finish; 209 sc->sc_wdcdev.sc_atac.atac_set_modes = kauai_set_modes; 210 sc->sc_calc_timing = calc_timing_kauai; 211 sc->sc_dmareg = mapiodev(dmabase, 0x1000, false); 212 213 chp->ch_channel = 0; 214 chp->ch_atac = &sc->sc_wdcdev.sc_atac; 215 chp->ch_queue = &sc->sc_queue; 216 wdc_init_shadow_regs(chp); 217 218 wdcattach(chp); 219 } 220 221 void 222 kauai_set_modes(struct ata_channel *chp) 223 { 224 struct kauai_softc *sc = (void *)chp->ch_atac; 225 struct wdc_regs *wdr = CHAN_TO_WDC_REGS(chp); 226 struct ata_drive_datas *drvp0 = &chp->ch_drive[0]; 227 struct ata_drive_datas *drvp1 = &chp->ch_drive[1]; 228 struct ata_drive_datas *drvp; 229 int drive; 230 231 if (drvp0->drive_type != ATA_DRIVET_NONE && 232 drvp1->drive_type != ATA_DRIVET_NONE) { 233 drvp0->PIO_mode = drvp1->PIO_mode = 234 min(drvp0->PIO_mode, drvp1->PIO_mode); 235 } 236 237 for (drive = 0; drive < 2; drive++) { 238 drvp = &chp->ch_drive[drive]; 239 if (drvp->drive_type != ATA_DRIVET_NONE) { 240 (*sc->sc_calc_timing)(sc, drive); 241 bus_space_write_4(wdr->cmd_iot, wdr->cmd_baseioh, 242 PIO_CONFIG_REG, sc->sc_piotiming_r[drive]); 243 bus_space_write_4(wdr->cmd_iot, wdr->cmd_baseioh, 244 DMA_CONFIG_REG, sc->sc_dmatiming_r[drive]); 245 } 246 } 247 } 248 249 /* 250 * IDE transfer timings 251 */ 252 static const u_int pio_timing_kauai[] = { /* 0xff000fff */ 253 0x08000a92, /* Mode 0 */ 254 0x0800060f, /* 1 */ 255 0x0800038b, /* 2 */ 256 0x05000249, /* 3 */ 257 0x04000148 /* 4 */ 258 }; 259 static const u_int dma_timing_kauai[] = { /* 0x00fff000 */ 260 0x00618000, /* Mode 0 */ 261 0x00209000, /* 1 */ 262 0x00148000 /* 2 */ 263 }; 264 static const u_int udma_timing_kauai[] = { /* 0x0000ffff */ 265 0x000070c0, /* Mode 0 */ 266 0x00005d80, /* 1 */ 267 0x00004a60, /* 2 */ 268 0x00003a50, /* 3 */ 269 0x00002a30, /* 4 */ 270 0x00002921 /* 5 */ 271 }; 272 273 /* 274 * Timing calculation for Kauai. 275 */ 276 void 277 calc_timing_kauai(struct kauai_softc *sc, int drive) 278 { 279 struct ata_channel *chp = &sc->sc_channel; 280 struct ata_drive_datas *drvp = &chp->ch_drive[drive]; 281 int piomode = drvp->PIO_mode; 282 int dmamode = drvp->DMA_mode; 283 int udmamode = drvp->UDMA_mode; 284 u_int pioconf, dmaconf; 285 286 pioconf = pio_timing_kauai[piomode]; 287 288 dmaconf = 0; 289 if (drvp->drive_flags & ATA_DRIVE_DMA) 290 dmaconf |= dma_timing_kauai[dmamode]; 291 if (drvp->drive_flags & ATA_DRIVE_UDMA) 292 dmaconf |= udma_timing_kauai[udmamode]; 293 294 if (drvp->drive_flags & ATA_DRIVE_UDMA) 295 dmaconf |= 1; 296 297 sc->sc_piotiming_r[drive] = sc->sc_piotiming_w[drive] = pioconf; 298 sc->sc_dmatiming_r[drive] = sc->sc_dmatiming_w[drive] = dmaconf; 299 } 300 301 int 302 kauai_dma_init(void *v, int channel, int drive, void *databuf, 303 size_t datalen, int flags) 304 { 305 struct kauai_softc *sc = v; 306 dbdma_command_t *cmdp = sc->sc_dmacmd; 307 struct ata_channel *chp = &sc->sc_channel; 308 struct wdc_regs *wdr = CHAN_TO_WDC_REGS(chp); 309 vaddr_t va = (vaddr_t)databuf; 310 int read = flags & WDC_DMA_READ; 311 int cmd = read ? DBDMA_CMD_IN_MORE : DBDMA_CMD_OUT_MORE; 312 u_int offset; 313 314 bus_space_write_4(wdr->cmd_iot, wdr->cmd_baseioh, DMA_CONFIG_REG, 315 read ? sc->sc_dmatiming_r[drive] : sc->sc_dmatiming_w[drive]); 316 bus_space_read_4(wdr->cmd_iot, wdr->cmd_baseioh, DMA_CONFIG_REG); 317 318 offset = va & PGOFSET; 319 320 /* if va is not page-aligned, setup the first page */ 321 if (offset != 0) { 322 int rest = PAGE_SIZE - offset; /* the rest of the page */ 323 324 if (datalen > rest) { /* if continues to next page */ 325 DBDMA_BUILD(cmdp, cmd, 0, rest, vtophys(va), 326 DBDMA_INT_NEVER, DBDMA_WAIT_NEVER, 327 DBDMA_BRANCH_NEVER); 328 datalen -= rest; 329 va += rest; 330 cmdp++; 331 } 332 } 333 334 /* now va is page-aligned */ 335 while (datalen > PAGE_SIZE) { 336 DBDMA_BUILD(cmdp, cmd, 0, PAGE_SIZE, vtophys(va), 337 DBDMA_INT_NEVER, DBDMA_WAIT_NEVER, DBDMA_BRANCH_NEVER); 338 datalen -= PAGE_SIZE; 339 va += PAGE_SIZE; 340 cmdp++; 341 } 342 343 /* the last page (datalen <= PAGE_SIZE here) */ 344 cmd = read ? DBDMA_CMD_IN_LAST : DBDMA_CMD_OUT_LAST; 345 DBDMA_BUILD(cmdp, cmd, 0, datalen, vtophys(va), 346 DBDMA_INT_NEVER, DBDMA_WAIT_NEVER, DBDMA_BRANCH_NEVER); 347 cmdp++; 348 349 DBDMA_BUILD(cmdp, DBDMA_CMD_STOP, 0, 0, 0, 350 DBDMA_INT_NEVER, DBDMA_WAIT_NEVER, DBDMA_BRANCH_NEVER); 351 352 return 0; 353 } 354 355 void 356 kauai_dma_start(void *v, int channel, int drive) 357 { 358 struct kauai_softc *sc = v; 359 360 dbdma_start(sc->sc_dmareg, sc->sc_dmacmd); 361 } 362 363 int 364 kauai_dma_finish(void *v, int channel, int drive, int read) 365 { 366 struct kauai_softc *sc = v; 367 368 dbdma_stop(sc->sc_dmareg); 369 return 0; 370 } 371
Indexes created Fri Oct 03 02:09:57 GMT 2025