2 * Copyright (c) 2006 David Gwynne <dlg@openbsd.org>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 * Copyright (c) 2009 The DragonFly Project. All rights reserved.
19 * This code is derived from software contributed to The DragonFly Project
20 * by Matthew Dillon <dillon@backplane.com>
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the above copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in
30 * the documentation and/or other materials provided with the
32 * 3. Neither the name of The DragonFly Project nor the names of its
33 * contributors may be used to endorse or promote products derived
34 * from this software without specific, prior written permission.
36 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
37 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
38 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
39 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
40 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
41 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
42 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
44 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
45 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
46 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
49 * $OpenBSD: ahci.c,v 1.147 2009/02/16 21:19:07 miod Exp $
54 static int ahci_vt8251_attach(device_t);
55 static int ahci_ati_sb600_attach(device_t);
56 static int ahci_nvidia_mcp_attach(device_t);
57 static int ahci_pci_attach(device_t);
58 static int ahci_pci_detach(device_t);
60 static const struct ahci_device ahci_devices[] = {
61 { PCI_VENDOR_VIATECH, PCI_PRODUCT_VIATECH_VT8251_SATA,
62 ahci_vt8251_attach, ahci_pci_detach, "ViaTech-VT8251-SATA" },
63 { PCI_VENDOR_ATI, PCI_PRODUCT_ATI_SB600_SATA,
64 ahci_ati_sb600_attach, ahci_pci_detach, "ATI-SB600-SATA" },
65 { PCI_VENDOR_NVIDIA, PCI_PRODUCT_NVIDIA_MCP65_AHCI_2,
66 ahci_nvidia_mcp_attach, ahci_pci_detach, "NVidia-MCP65-SATA" },
67 { PCI_VENDOR_NVIDIA, PCI_PRODUCT_NVIDIA_MCP67_AHCI_1,
68 ahci_nvidia_mcp_attach, ahci_pci_detach, "NVidia-MCP67-SATA" },
69 { PCI_VENDOR_NVIDIA, PCI_PRODUCT_NVIDIA_MCP77_AHCI_5,
70 ahci_nvidia_mcp_attach, ahci_pci_detach, "NVidia-MCP77-SATA" },
72 ahci_pci_attach, ahci_pci_detach, "AHCI-PCI-SATA" }
76 * Match during probe and attach. The device does not yet have a softc.
78 const struct ahci_device *
79 ahci_lookup_device(device_t dev)
81 const struct ahci_device *ad;
82 u_int16_t vendor = pci_get_vendor(dev);
83 u_int16_t product = pci_get_device(dev);
84 u_int8_t class = pci_get_class(dev);
85 u_int8_t subclass = pci_get_subclass(dev);
86 u_int8_t progif = pci_read_config(dev, PCIR_PROGIF, 1);
88 for (ad = &ahci_devices[0]; ad->ad_vendor; ++ad) {
89 if (ad->ad_vendor == vendor && ad->ad_product == product)
94 * Last ad is the default match if the PCI device matches SATA.
96 if (class == PCIC_STORAGE && subclass == PCIS_STORAGE_SATA &&
97 progif == PCIP_STORAGE_SATA_AHCI_1_0) {
105 * Attach functions. They all eventually fall through to ahci_pci_attach().
108 ahci_vt8251_attach(device_t dev)
110 struct ahci_softc *sc = device_get_softc(dev);
112 sc->sc_flags |= AHCI_F_NO_NCQ;
113 return (ahci_pci_attach(dev));
117 ahci_ati_sb600_attach(device_t dev)
119 struct ahci_softc *sc = device_get_softc(dev);
121 u_int8_t subclass = pci_get_subclass(dev);
124 if (subclass == PCIS_STORAGE_IDE) {
125 revid = pci_read_config(dev, PCIR_REVID, 1);
126 magic = pci_read_config(dev, AHCI_PCI_ATI_SB600_MAGIC, 4);
127 pci_write_config(dev, AHCI_PCI_ATI_SB600_MAGIC,
128 magic | AHCI_PCI_ATI_SB600_LOCKED, 4);
129 pci_write_config(dev, PCIR_REVID,
130 (PCIC_STORAGE << 24) |
131 (PCIS_STORAGE_SATA << 16) |
132 (PCIP_STORAGE_SATA_AHCI_1_0 << 8) |
134 pci_write_config(dev, AHCI_PCI_ATI_SB600_MAGIC, magic, 4);
137 sc->sc_flags |= AHCI_F_IGN_FR;
138 return (ahci_pci_attach(dev));
142 ahci_nvidia_mcp_attach(device_t dev)
144 struct ahci_softc *sc = device_get_softc(dev);
146 sc->sc_flags |= AHCI_F_IGN_FR;
147 return (ahci_pci_attach(dev));
151 ahci_pci_attach(device_t dev)
153 struct ahci_softc *sc = device_get_softc(dev);
154 struct ahci_port *ap;
156 u_int32_t cap, pi, reg;
160 const char *revision;
163 * Map the AHCI controller's IRQ and BAR(5) (hardware registers)
166 sc->sc_rid_irq = AHCI_IRQ_RID;
167 sc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->sc_rid_irq,
168 RF_SHAREABLE | RF_ACTIVE);
169 if (sc->sc_irq == NULL) {
170 device_printf(dev, "unable to map interrupt\n");
171 ahci_pci_detach(dev);
176 * When mapping the register window store the tag and handle
177 * separately so we can use the tag with per-port bus handle
180 sc->sc_rid_regs = PCIR_BAR(5);
181 sc->sc_regs = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
182 &sc->sc_rid_regs, RF_ACTIVE);
183 if (sc->sc_regs == NULL) {
184 device_printf(dev, "unable to map registers\n");
185 ahci_pci_detach(dev);
188 sc->sc_iot = rman_get_bustag(sc->sc_regs);
189 sc->sc_ioh = rman_get_bushandle(sc->sc_regs);
192 * Initialize the chipset and then set the interrupt vector up
194 error = ahci_init(sc);
196 ahci_pci_detach(dev);
201 * Get the AHCI capabilities and max number of concurrent
202 * command tags and set up the DMA tags.
204 cap = ahci_read(sc, AHCI_REG_CAP);
205 if (sc->sc_flags & AHCI_F_NO_NCQ)
206 cap &= ~AHCI_REG_CAP_SNCQ;
210 * We assume at least 4 commands.
212 sc->sc_ncmds = AHCI_REG_CAP_NCS(cap);
213 if (sc->sc_ncmds < 4) {
214 device_printf(dev, "NCS must probe a value >= 4\n");
215 ahci_pci_detach(dev);
219 addr = (cap & AHCI_REG_CAP_S64A) ?
220 BUS_SPACE_MAXADDR : BUS_SPACE_MAXADDR_32BIT;
223 * DMA tags for allocation of DMA memory buffers, lists, and so
224 * forth. These are typically per-port.
227 error += bus_dma_tag_create(
228 NULL, /* parent tag */
230 PAGE_SIZE, /* boundary */
232 BUS_SPACE_MAXADDR, /* hiaddr */
234 NULL, /* filterarg */
235 sizeof(struct ahci_rfis), /* [max]size */
237 sizeof(struct ahci_rfis), /* maxsegsz */
239 &sc->sc_tag_rfis); /* return tag */
241 error += bus_dma_tag_create(
242 NULL, /* parent tag */
244 4096 * 1024, /* boundary */
246 BUS_SPACE_MAXADDR, /* hiaddr */
248 NULL, /* filterarg */
249 sc->sc_ncmds * sizeof(struct ahci_cmd_hdr),
251 sc->sc_ncmds * sizeof(struct ahci_cmd_hdr),
253 &sc->sc_tag_cmdh); /* return tag */
256 * NOTE: ahci_cmd_table is sized to a power of 2
258 error += bus_dma_tag_create(
259 NULL, /* parent tag */
260 sizeof(struct ahci_cmd_table), /* alignment */
261 4096 * 1024, /* boundary */
263 BUS_SPACE_MAXADDR, /* hiaddr */
265 NULL, /* filterarg */
266 sc->sc_ncmds * sizeof(struct ahci_cmd_table),
268 sc->sc_ncmds * sizeof(struct ahci_cmd_table),
270 &sc->sc_tag_cmdt); /* return tag */
273 * The data tag is used for later dmamaps and not immediately
276 error += bus_dma_tag_create(
277 NULL, /* parent tag */
281 BUS_SPACE_MAXADDR, /* hiaddr */
283 NULL, /* filterarg */
284 4096 * 1024, /* maxiosize */
285 AHCI_MAX_PRDT, /* maxsegs */
286 65536, /* maxsegsz */
288 &sc->sc_tag_data); /* return tag */
291 device_printf(dev, "unable to create dma tags\n");
292 ahci_pci_detach(dev);
296 switch (cap & AHCI_REG_CAP_ISS) {
297 case AHCI_REG_CAP_ISS_G1:
300 case AHCI_REG_CAP_ISS_G1_2:
301 gen = "1 (1.5Gbps) and 2 (3Gbps)";
308 /* check the revision */
309 reg = ahci_read(sc, AHCI_REG_VS);
311 case AHCI_REG_VS_0_95:
312 revision = "AHCI 0.95";
314 case AHCI_REG_VS_1_0:
315 revision = "AHCI 1.0";
317 case AHCI_REG_VS_1_1:
318 revision = "AHCI 1.1";
320 case AHCI_REG_VS_1_2:
321 revision = "AHCI 1.2";
324 device_printf(sc->sc_dev,
325 "Warning: Unknown AHCI revision 0x%08x\n", reg);
326 revision = "AHCI <unknown>";
331 "%s capabilities 0x%b, %d ports, %d tags/port, gen %s\n",
334 AHCI_REG_CAP_NP(cap), sc->sc_ncmds, gen);
336 pi = ahci_read(sc, AHCI_REG_PI);
337 DPRINTF(AHCI_D_VERBOSE, "%s: ports implemented: 0x%08x\n",
341 /* Naive coalescing support - enable for all ports. */
342 if (cap & AHCI_REG_CAP_CCCS) {
343 u_int16_t ccc_timeout = 20;
344 u_int8_t ccc_numcomplete = 12;
347 /* disable coalescing during reconfiguration. */
348 ccc_ctl = ahci_read(sc, AHCI_REG_CCC_CTL);
349 ccc_ctl &= ~0x00000001;
350 ahci_write(sc, AHCI_REG_CCC_CTL, ccc_ctl);
352 sc->sc_ccc_mask = 1 << AHCI_REG_CCC_CTL_INT(ccc_ctl);
353 if (pi & sc->sc_ccc_mask) {
354 /* A conflict with the implemented port list? */
355 printf("%s: coalescing interrupt/implemented port list "
356 "conflict, PI: %08x, ccc_mask: %08x\n",
357 DEVNAME(sc), pi, sc->sc_ccc_mask);
362 /* ahci_port_start will enable each port when it starts. */
363 sc->sc_ccc_ports = pi;
364 sc->sc_ccc_ports_cur = 0;
366 /* program thresholds and enable overall coalescing. */
367 ccc_ctl &= ~0xffffff00;
368 ccc_ctl |= (ccc_timeout << 16) | (ccc_numcomplete << 8);
369 ahci_write(sc, AHCI_REG_CCC_CTL, ccc_ctl);
370 ahci_write(sc, AHCI_REG_CCC_PORTS, 0);
371 ahci_write(sc, AHCI_REG_CCC_CTL, ccc_ctl | 1);
376 * Allocate per-port resources
378 * Ignore attach errors, leave the port intact for
379 * rescan and continue the loop.
381 * All ports are attached in parallel but the CAM scan-bus
382 * is held up until all ports are attached so we get a deterministic
385 for (i = 0; error == 0 && i < AHCI_MAX_PORTS; i++) {
386 if ((pi & (1 << i)) == 0) {
387 /* dont allocate stuff if the port isnt implemented */
390 error = ahci_port_alloc(sc, i);
394 * Setup the interrupt vector and enable interrupts. Note that
395 * since the irq may be shared we do not set it up until we are
399 error = bus_setup_intr(dev, sc->sc_irq, 0, ahci_intr, sc,
400 &sc->sc_irq_handle, NULL);
404 device_printf(dev, "unable to install interrupt\n");
405 ahci_pci_detach(dev);
410 * Master interrupt enable, and call ahci_intr() in case we race
411 * our AHCI_F_INT_GOOD flag.
414 ahci_write(sc, AHCI_REG_GHC, AHCI_REG_GHC_AE | AHCI_REG_GHC_IE);
415 sc->sc_flags |= AHCI_F_INT_GOOD;
420 * All ports are probing in parallel. Wait for them to finish
421 * and then issue the cam attachment and bus scan serially so
422 * the 'da' assignments are deterministic.
424 for (i = 0; i < AHCI_MAX_PORTS; i++) {
425 if ((ap = sc->sc_ports[i]) != NULL) {
426 while (ap->ap_signal & AP_SIGF_INIT)
427 tsleep(&ap->ap_signal, 0, "ahprb1", hz);
428 ahci_os_lock_port(ap);
429 if (ahci_cam_attach(ap) == 0) {
430 ahci_cam_changed(ap, NULL, -1);
431 ahci_os_unlock_port(ap);
432 while ((ap->ap_flags & AP_F_SCAN_COMPLETED) == 0) {
433 tsleep(&ap->ap_flags, 0, "ahprb2", hz);
436 ahci_os_unlock_port(ap);
445 * Device unload / detachment
448 ahci_pci_detach(device_t dev)
450 struct ahci_softc *sc = device_get_softc(dev);
451 struct ahci_port *ap;
455 * Disable the controller and de-register the interrupt, if any.
457 * XXX interlock last interrupt?
459 sc->sc_flags &= ~AHCI_F_INT_GOOD;
461 ahci_write(sc, AHCI_REG_GHC, 0);
463 if (sc->sc_irq_handle) {
464 bus_teardown_intr(dev, sc->sc_irq, sc->sc_irq_handle);
465 sc->sc_irq_handle = NULL;
469 * Free port structures and DMA memory
471 for (i = 0; i < AHCI_MAX_PORTS; i++) {
472 ap = sc->sc_ports[i];
475 ahci_port_free(sc, i);
480 * Clean up the bus space
483 bus_release_resource(dev, SYS_RES_IRQ,
484 sc->sc_rid_irq, sc->sc_irq);
488 bus_release_resource(dev, SYS_RES_MEMORY,
489 sc->sc_rid_regs, sc->sc_regs);
493 if (sc->sc_tag_rfis) {
494 bus_dma_tag_destroy(sc->sc_tag_rfis);
495 sc->sc_tag_rfis = NULL;
497 if (sc->sc_tag_cmdh) {
498 bus_dma_tag_destroy(sc->sc_tag_cmdh);
499 sc->sc_tag_cmdh = NULL;
501 if (sc->sc_tag_cmdt) {
502 bus_dma_tag_destroy(sc->sc_tag_cmdt);
503 sc->sc_tag_cmdt = NULL;
505 if (sc->sc_tag_data) {
506 bus_dma_tag_destroy(sc->sc_tag_data);
507 sc->sc_tag_data = NULL;