kauai.c revision 1.34
1 /* $NetBSD: kauai.c,v 1.34 2013/04/28 00:42:29 macallan 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 1.34 2013/04/28 00:42:29 macallan 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; 116 117 sc->sc_wdcdev.sc_atac.atac_dev = self; 118 119 sc->sc_dmacmd = dbdma_alloc(sizeof(dbdma_command_t) * 20); 120 node = pcidev_to_ofdev(pa->pa_pc, pa->pa_tag); 121 if (node == 0) { 122 aprint_error(": cannot find kauai node\n"); 123 return; 124 } 125 126 if (OF_getprop(node, "assigned-addresses", reg, sizeof reg) < 12) { 127 aprint_error(": cannot get address property\n"); 128 return; 129 } 130 regbase = reg[2] + 0x2000; 131 dmabase = reg[2] + 0x1000; 132 133 /* 134 * XXX PCI_INTERRUPT_REG seems to be wired to 0. 135 * XXX So use fixed intrpin and intrline values if the interrupts 136 * XXX property contains no IRQ line 137 */ 138 intr = 0; 139 pa->pa_intrpin = 1; 140 if (OF_getprop(node, "interrupts", intrs, sizeof(intrs)) >= 4) { 141 intr = intrs[0]; 142 /* 143 * the interrupts property on my iBook G4's kauai contains 144 * 0x00000001 0x00000000, so fix that up here 145 * TODO: use parent's interrupt-map property to do this right 146 */ 147 if (intr < 10) 148 intr = 0; 149 aprint_debug_dev(self, 150 "got %d from interrupts property\n", intr); 151 } 152 if (intr == 0) { 153 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_SHASTA_ATA) { 154 intr = 38; 155 } else 156 intr = 39; 157 } 158 pa->pa_intrline = intr; 159 160 if (pci_intr_map(pa, &ih)) { 161 aprint_error(": unable to map interrupt\n"); 162 return; 163 } 164 aprint_normal(": interrupting at %s\n", pci_intr_string(pa->pa_pc, ih)); 165 166 sc->sc_wdcdev.regs = wdr = &sc->sc_wdc_regs; 167 168 wdr->cmd_iot = wdr->ctl_iot = pa->pa_memt; 169 170 if (bus_space_map(wdr->cmd_iot, regbase, WDC_REG_NPORTS << 4, 0, 171 &wdr->cmd_baseioh) || 172 bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, 173 WDC_AUXREG_OFFSET << 4, 1, &wdr->ctl_ioh)) { 174 aprint_error_dev(self, "couldn't map registers\n"); 175 return; 176 } 177 for (i = 0; i < WDC_NREG; i++) { 178 if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh, i << 4, 179 i == 0 ? 4 : 1, &wdr->cmd_iohs[i]) != 0) { 180 bus_space_unmap(wdr->cmd_iot, wdr->cmd_baseioh, 181 WDC_REG_NPORTS << 4); 182 aprint_error_dev(self, 183 "couldn't subregion registers\n"); 184 return; 185 } 186 } 187 188 if (pci_intr_establish(pa->pa_pc, ih, IPL_BIO, wdcintr, chp) == NULL) { 189 aprint_error_dev(self, "unable to establish interrupt\n"); 190 return; 191 } 192 193 194 sc->sc_wdcdev.sc_atac.atac_pio_cap = 4; 195 sc->sc_wdcdev.sc_atac.atac_dma_cap = 2; 196 sc->sc_wdcdev.sc_atac.atac_udma_cap = 5; 197 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16; 198 sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA | ATAC_CAP_UDMA; 199 sc->sc_chanptr = chp; 200 sc->sc_wdcdev.sc_atac.atac_channels = &sc->sc_chanptr; 201 sc->sc_wdcdev.sc_atac.atac_nchannels = 1; 202 sc->sc_wdcdev.wdc_maxdrives = 2; 203 sc->sc_wdcdev.dma_arg = sc; 204 sc->sc_wdcdev.dma_init = kauai_dma_init; 205 sc->sc_wdcdev.dma_start = kauai_dma_start; 206 sc->sc_wdcdev.dma_finish = kauai_dma_finish; 207 sc->sc_wdcdev.sc_atac.atac_set_modes = kauai_set_modes; 208 sc->sc_calc_timing = calc_timing_kauai; 209 sc->sc_dmareg = mapiodev(dmabase, 0x1000, false); 210 211 chp->ch_channel = 0; 212 chp->ch_atac = &sc->sc_wdcdev.sc_atac; 213 chp->ch_queue = &sc->sc_queue; 214 wdc_init_shadow_regs(chp); 215 216 wdcattach(chp); 217 } 218 219 void 220 kauai_set_modes(struct ata_channel *chp) 221 { 222 struct kauai_softc *sc = (void *)chp->ch_atac; 223 struct wdc_regs *wdr = CHAN_TO_WDC_REGS(chp); 224 struct ata_drive_datas *drvp0 = &chp->ch_drive[0]; 225 struct ata_drive_datas *drvp1 = &chp->ch_drive[1]; 226 struct ata_drive_datas *drvp; 227 int drive; 228 229 if (drvp0->drive_type != ATA_DRIVET_NONE && 230 drvp1->drive_type != ATA_DRIVET_NONE) { 231 drvp0->PIO_mode = drvp1->PIO_mode = 232 min(drvp0->PIO_mode, drvp1->PIO_mode); 233 } 234 235 for (drive = 0; drive < 2; drive++) { 236 drvp = &chp->ch_drive[drive]; 237 if (drvp->drive_type != ATA_DRIVET_NONE) { 238 (*sc->sc_calc_timing)(sc, drive); 239 bus_space_write_4(wdr->cmd_iot, wdr->cmd_baseioh, 240 PIO_CONFIG_REG, sc->sc_piotiming_r[drive]); 241 bus_space_write_4(wdr->cmd_iot, wdr->cmd_baseioh, 242 DMA_CONFIG_REG, sc->sc_dmatiming_r[drive]); 243 } 244 } 245 } 246 247 /* 248 * IDE transfer timings 249 */ 250 static const u_int pio_timing_kauai[] = { /* 0xff000fff */ 251 0x08000a92, /* Mode 0 */ 252 0x0800060f, /* 1 */ 253 0x0800038b, /* 2 */ 254 0x05000249, /* 3 */ 255 0x04000148 /* 4 */ 256 }; 257 static const u_int dma_timing_kauai[] = { /* 0x00fff000 */ 258 0x00618000, /* Mode 0 */ 259 0x00209000, /* 1 */ 260 0x00148000 /* 2 */ 261 }; 262 static const u_int udma_timing_kauai[] = { /* 0x0000ffff */ 263 0x000070c0, /* Mode 0 */ 264 0x00005d80, /* 1 */ 265 0x00004a60, /* 2 */ 266 0x00003a50, /* 3 */ 267 0x00002a30, /* 4 */ 268 0x00002921 /* 5 */ 269 }; 270 271 /* 272 * Timing calculation for Kauai. 273 */ 274 void 275 calc_timing_kauai(struct kauai_softc *sc, int drive) 276 { 277 struct ata_channel *chp = &sc->sc_channel; 278 struct ata_drive_datas *drvp = &chp->ch_drive[drive]; 279 int piomode = drvp->PIO_mode; 280 int dmamode = drvp->DMA_mode; 281 int udmamode = drvp->UDMA_mode; 282 u_int pioconf, dmaconf; 283 284 pioconf = pio_timing_kauai[piomode]; 285 286 dmaconf = 0; 287 if (drvp->drive_flags & ATA_DRIVE_DMA) 288 dmaconf |= dma_timing_kauai[dmamode]; 289 if (drvp->drive_flags & ATA_DRIVE_UDMA) 290 dmaconf |= udma_timing_kauai[udmamode]; 291 292 if (drvp->drive_flags & ATA_DRIVE_UDMA) 293 dmaconf |= 1; 294 295 sc->sc_piotiming_r[drive] = sc->sc_piotiming_w[drive] = pioconf; 296 sc->sc_dmatiming_r[drive] = sc->sc_dmatiming_w[drive] = dmaconf; 297 } 298 299 int 300 kauai_dma_init(void *v, int channel, int drive, void *databuf, 301 size_t datalen, int flags) 302 { 303 struct kauai_softc *sc = v; 304 dbdma_command_t *cmdp = sc->sc_dmacmd; 305 struct ata_channel *chp = &sc->sc_channel; 306 struct wdc_regs *wdr = CHAN_TO_WDC_REGS(chp); 307 vaddr_t va = (vaddr_t)databuf; 308 int read = flags & WDC_DMA_READ; 309 int cmd = read ? DBDMA_CMD_IN_MORE : DBDMA_CMD_OUT_MORE; 310 u_int offset; 311 312 bus_space_write_4(wdr->cmd_iot, wdr->cmd_baseioh, DMA_CONFIG_REG, 313 read ? sc->sc_dmatiming_r[drive] : sc->sc_dmatiming_w[drive]); 314 bus_space_read_4(wdr->cmd_iot, wdr->cmd_baseioh, DMA_CONFIG_REG); 315 316 offset = va & PGOFSET; 317 318 /* if va is not page-aligned, setup the first page */ 319 if (offset != 0) { 320 int rest = PAGE_SIZE - offset; /* the rest of the page */ 321 322 if (datalen > rest) { /* if continues to next page */ 323 DBDMA_BUILD(cmdp, cmd, 0, rest, vtophys(va), 324 DBDMA_INT_NEVER, DBDMA_WAIT_NEVER, 325 DBDMA_BRANCH_NEVER); 326 datalen -= rest; 327 va += rest; 328 cmdp++; 329 } 330 } 331 332 /* now va is page-aligned */ 333 while (datalen > PAGE_SIZE) { 334 DBDMA_BUILD(cmdp, cmd, 0, PAGE_SIZE, vtophys(va), 335 DBDMA_INT_NEVER, DBDMA_WAIT_NEVER, DBDMA_BRANCH_NEVER); 336 datalen -= PAGE_SIZE; 337 va += PAGE_SIZE; 338 cmdp++; 339 } 340 341 /* the last page (datalen <= PAGE_SIZE here) */ 342 cmd = read ? DBDMA_CMD_IN_LAST : DBDMA_CMD_OUT_LAST; 343 DBDMA_BUILD(cmdp, cmd, 0, datalen, vtophys(va), 344 DBDMA_INT_NEVER, DBDMA_WAIT_NEVER, DBDMA_BRANCH_NEVER); 345 cmdp++; 346 347 DBDMA_BUILD(cmdp, DBDMA_CMD_STOP, 0, 0, 0, 348 DBDMA_INT_NEVER, DBDMA_WAIT_NEVER, DBDMA_BRANCH_NEVER); 349 350 return 0; 351 } 352 353 void 354 kauai_dma_start(void *v, int channel, int drive) 355 { 356 struct kauai_softc *sc = v; 357 358 dbdma_start(sc->sc_dmareg, sc->sc_dmacmd); 359 } 360 361 int 362 kauai_dma_finish(void *v, int channel, int drive, int read) 363 { 364 struct kauai_softc *sc = v; 365 366 dbdma_stop(sc->sc_dmareg); 367 return 0; 368 } 369
Indexes created Fri Oct 03 02:09:57 GMT 2025