2 * Copyright (c) 1999 Seigo Tanimura
5 * Portions of this source are based on cwcealdr.cpp and dhwiface.cpp in
6 * cwcealdr1.zip, the sample sources by Crystal Semiconductor.
7 * Copyright (c) 1996-1998 Crystal Semiconductor Corp.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/kernel.h>
35 #include <sys/malloc.h>
36 #include <sys/module.h>
37 #include <machine/resource.h>
38 #include <machine/bus.h>
41 #ifdef HAVE_KERNEL_OPTION_HEADERS
45 #include <dev/sound/pcm/sound.h>
46 #include <dev/sound/chip.h>
47 #include <dev/sound/pci/csareg.h>
48 #include <dev/sound/pci/csavar.h>
50 #include <dev/pci/pcireg.h>
51 #include <dev/pci/pcivar.h>
53 #include <gnu/dev/sound/pci/csaimg.h>
55 SND_DECLARE_FILE("$FreeBSD$");
57 /* This is the pci device id. */
58 #define CS4610_PCI_ID 0x60011013
59 #define CS4614_PCI_ID 0x60031013
60 #define CS4615_PCI_ID 0x60041013
62 /* Here is the parameter structure per a device. */
64 device_t dev; /* device */
65 csa_res res; /* resources */
67 device_t pcm; /* pcm device */
68 driver_intr_t* pcmintr; /* pcm intr */
69 void *pcmintr_arg; /* pcm intr arg */
70 device_t midi; /* midi device */
71 driver_intr_t* midiintr; /* midi intr */
72 void *midiintr_arg; /* midi intr arg */
73 void *ih; /* cookie */
75 struct csa_card *card;
76 struct csa_bridgeinfo binfo; /* The state of this bridge. */
79 typedef struct csa_softc *sc_p;
81 static int csa_probe(device_t dev);
82 static int csa_attach(device_t dev);
83 static struct resource *csa_alloc_resource(device_t bus, device_t child, int type, int *rid,
84 u_long start, u_long end, u_long count, u_int flags);
85 static int csa_release_resource(device_t bus, device_t child, int type, int rid,
87 static int csa_setup_intr(device_t bus, device_t child,
88 struct resource *irq, int flags,
89 #if __FreeBSD_version >= 700031
90 driver_filter_t *filter,
92 driver_intr_t *intr, void *arg, void **cookiep);
93 static int csa_teardown_intr(device_t bus, device_t child,
94 struct resource *irq, void *cookie);
95 static driver_intr_t csa_intr;
96 static int csa_initialize(sc_p scp);
97 static int csa_downloadimage(csa_res *resp);
99 static devclass_t csa_devclass;
115 devclass_t pci_devclass;
116 device_t *pci_devices, *pci_children, *busp, *childp;
117 int pci_count = 0, pci_childcount = 0;
120 bus_space_tag_t btag;
122 if ((pci_devclass = devclass_find("pci")) == NULL) {
126 devclass_get_devices(pci_devclass, &pci_devices, &pci_count);
128 for (i = 0, busp = pci_devices; i < pci_count; i++, busp++) {
130 if (device_get_children(*busp, &pci_children, &pci_childcount))
132 for (j = 0, childp = pci_children; j < pci_childcount; j++, childp++) {
133 if (pci_get_vendor(*childp) == 0x8086 && pci_get_device(*childp) == 0x7113) {
134 port = (pci_read_config(*childp, 0x41, 1) << 8) + 0x10;
136 btag = I386_BUS_SPACE_IO;
138 control = bus_space_read_2(btag, 0x0, port);
140 control |= run? 0 : 0x2000;
141 bus_space_write_2(btag, 0x0, port, control);
142 free(pci_devices, M_TEMP);
143 free(pci_children, M_TEMP);
147 free(pci_children, M_TEMP);
150 free(pci_devices, M_TEMP);
157 static struct csa_card cards_4610[] = {
158 {0, 0, "Unknown/invalid SSID (CS4610)", NULL, NULL, NULL, 0},
161 static struct csa_card cards_4614[] = {
162 {0x1489, 0x7001, "Genius Soundmaker 128 value", amp_none, NULL, NULL, 0},
163 {0x5053, 0x3357, "Turtle Beach Santa Cruz", amp_voyetra, NULL, NULL, 1},
164 {0x1071, 0x6003, "Mitac MI6020/21", amp_voyetra, NULL, NULL, 0},
165 {0x14AF, 0x0050, "Hercules Game Theatre XP", NULL, NULL, NULL, 0},
166 {0x1681, 0x0050, "Hercules Game Theatre XP", NULL, NULL, NULL, 0},
167 {0x1014, 0x0132, "Thinkpad 570", amp_none, NULL, NULL, 0},
168 {0x1014, 0x0153, "Thinkpad 600X/A20/T20", amp_none, NULL, clkrun_hack, 0},
169 {0x1014, 0x1010, "Thinkpad 600E (unsupported)", NULL, NULL, NULL, 0},
170 {0, 0, "Unknown/invalid SSID (CS4614)", NULL, NULL, NULL, 0},
173 static struct csa_card cards_4615[] = {
174 {0, 0, "Unknown/invalid SSID (CS4615)", NULL, NULL, NULL, 0},
177 static struct csa_card nocard = {0, 0, "unknown", NULL, NULL, NULL, 0};
182 struct csa_card *cards;
185 static struct card_type cards[] = {
186 {CS4610_PCI_ID, "CS4610/CS4611", cards_4610},
187 {CS4614_PCI_ID, "CS4280/CS4614/CS4622/CS4624/CS4630", cards_4614},
188 {CS4615_PCI_ID, "CS4615", cards_4615},
192 static struct card_type *
193 csa_findcard(device_t dev)
198 while (cards[i].devid != 0) {
199 if (pci_get_devid(dev) == cards[i].devid)
207 csa_findsubcard(device_t dev)
210 struct card_type *card;
211 struct csa_card *subcard;
213 card = csa_findcard(dev);
216 subcard = card->cards;
218 while (subcard[i].subvendor != 0) {
219 if (pci_get_subvendor(dev) == subcard[i].subvendor
220 && pci_get_subdevice(dev) == subcard[i].subdevice) {
229 csa_probe(device_t dev)
231 struct card_type *card;
233 card = csa_findcard(dev);
235 device_set_desc(dev, card->name);
236 return BUS_PROBE_DEFAULT;
242 csa_attach(device_t dev)
247 struct sndcard_func *func;
250 scp = device_get_softc(dev);
252 /* Fill in the softc. */
253 bzero(scp, sizeof(*scp));
256 /* Wake up the device. */
257 stcmd = pci_read_config(dev, PCIR_COMMAND, 2);
258 if ((stcmd & PCIM_CMD_MEMEN) == 0 || (stcmd & PCIM_CMD_BUSMASTEREN) == 0) {
259 stcmd |= (PCIM_CMD_MEMEN | PCIM_CMD_BUSMASTEREN);
260 pci_write_config(dev, PCIR_COMMAND, stcmd, 2);
263 /* Allocate the resources. */
265 scp->card = csa_findsubcard(dev);
266 scp->binfo.card = scp->card;
267 printf("csa: card is %s\n", scp->card->name);
268 resp->io_rid = PCIR_BAR(0);
269 resp->io = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
270 &resp->io_rid, RF_ACTIVE);
271 if (resp->io == NULL)
273 resp->mem_rid = PCIR_BAR(1);
274 resp->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
275 &resp->mem_rid, RF_ACTIVE);
276 if (resp->mem == NULL)
279 resp->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
280 &resp->irq_rid, RF_ACTIVE | RF_SHAREABLE);
281 if (resp->irq == NULL)
284 /* Enable interrupt. */
285 if (snd_setup_intr(dev, resp->irq, 0, csa_intr, scp, &scp->ih))
288 if ((csa_readio(resp, BA0_HISR) & HISR_INTENA) == 0)
289 csa_writeio(resp, BA0_HICR, HICR_IEV | HICR_CHGM);
292 /* Initialize the chip. */
293 if (csa_initialize(scp))
296 /* Reset the Processor. */
299 /* Download the Processor Image to the processor. */
300 if (csa_downloadimage(resp))
303 /* Attach the children. */
306 func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
311 func->varinfo = &scp->binfo;
312 func->func = SCF_PCM;
313 scp->pcm = device_add_child(dev, "pcm", -1);
314 device_set_ivars(scp->pcm, func);
317 func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO);
322 func->varinfo = &scp->binfo;
323 func->func = SCF_MIDI;
324 scp->midi = device_add_child(dev, "midi", -1);
325 device_set_ivars(scp->midi, func);
327 bus_generic_attach(dev);
332 bus_teardown_intr(dev, resp->irq, scp->ih);
334 bus_release_resource(dev, SYS_RES_IRQ, resp->irq_rid, resp->irq);
336 bus_release_resource(dev, SYS_RES_MEMORY, resp->mem_rid, resp->mem);
338 bus_release_resource(dev, SYS_RES_MEMORY, resp->io_rid, resp->io);
343 csa_detach(device_t dev)
347 struct sndcard_func *func;
350 scp = device_get_softc(dev);
353 if (scp->midi != NULL) {
354 func = device_get_ivars(scp->midi);
355 err = device_delete_child(dev, scp->midi);
359 free(func, M_DEVBUF);
363 if (scp->pcm != NULL) {
364 func = device_get_ivars(scp->pcm);
365 err = device_delete_child(dev, scp->pcm);
369 free(func, M_DEVBUF);
373 bus_teardown_intr(dev, resp->irq, scp->ih);
374 bus_release_resource(dev, SYS_RES_IRQ, resp->irq_rid, resp->irq);
375 bus_release_resource(dev, SYS_RES_MEMORY, resp->mem_rid, resp->mem);
376 bus_release_resource(dev, SYS_RES_MEMORY, resp->io_rid, resp->io);
378 return bus_generic_detach(dev);
382 csa_resume(device_t dev)
387 scp = device_get_softc(dev);
390 /* Initialize the chip. */
391 if (csa_initialize(scp))
394 /* Reset the Processor. */
397 /* Download the Processor Image to the processor. */
398 if (csa_downloadimage(resp))
401 return (bus_generic_resume(dev));
404 static struct resource *
405 csa_alloc_resource(device_t bus, device_t child, int type, int *rid,
406 u_long start, u_long end, u_long count, u_int flags)
410 struct resource *res;
412 scp = device_get_softc(bus);
440 csa_release_resource(device_t bus, device_t child, int type, int rid,
447 * The following three functions deal with interrupt handling.
448 * An interrupt is primarily handled by the bridge driver.
449 * The bridge driver then determines the child devices to pass
450 * the interrupt. Certain information of the device can be read
451 * only once(eg the value of HISR). The bridge driver is responsible
452 * to pass such the information to the children.
456 csa_setup_intr(device_t bus, device_t child,
457 struct resource *irq, int flags,
458 #if __FreeBSD_version >= 700031
459 driver_filter_t *filter,
461 driver_intr_t *intr, void *arg, void **cookiep)
465 struct sndcard_func *func;
467 #if __FreeBSD_version >= 700031
468 if (filter != NULL) {
469 printf("ata-csa.c: we cannot use a filter here\n");
473 scp = device_get_softc(bus);
477 * Look at the function code of the child to determine
478 * the appropriate hander for it.
480 func = device_get_ivars(child);
481 if (func == NULL || irq != resp->irq)
484 switch (func->func) {
487 scp->pcmintr_arg = arg;
491 scp->midiintr = intr;
492 scp->midiintr_arg = arg;
499 if ((csa_readio(resp, BA0_HISR) & HISR_INTENA) == 0)
500 csa_writeio(resp, BA0_HICR, HICR_IEV | HICR_CHGM);
506 csa_teardown_intr(device_t bus, device_t child,
507 struct resource *irq, void *cookie)
511 struct sndcard_func *func;
513 scp = device_get_softc(bus);
517 * Look at the function code of the child to determine
518 * the appropriate hander for it.
520 func = device_get_ivars(child);
521 if (func == NULL || irq != resp->irq || cookie != scp)
524 switch (func->func) {
527 scp->pcmintr_arg = NULL;
531 scp->midiintr = NULL;
532 scp->midiintr_arg = NULL;
542 /* The interrupt handler */
552 /* Is this interrupt for us? */
553 hisr = csa_readio(resp, BA0_HISR);
554 if ((hisr & 0x7fffffff) == 0) {
556 csa_writeio(resp, BA0_HICR, HICR_IEV | HICR_CHGM);
561 * Pass the value of HISR via struct csa_bridgeinfo.
562 * The children get access through their ivars.
564 scp->binfo.hisr = hisr;
566 /* Invoke the handlers of the children. */
567 if ((hisr & (HISR_VC0 | HISR_VC1)) != 0 && scp->pcmintr != NULL) {
568 scp->pcmintr(scp->pcmintr_arg);
569 hisr &= ~(HISR_VC0 | HISR_VC1);
571 if ((hisr & HISR_MIDI) != 0 && scp->midiintr != NULL) {
572 scp->midiintr(scp->midiintr_arg);
577 csa_writeio(resp, BA0_HICR, HICR_IEV | HICR_CHGM);
581 csa_initialize(sc_p scp)
584 u_int32_t acsts, acisv;
590 * First, blast the clock control register to zero so that the PLL starts
591 * out in a known state, and blast the master serial port control register
592 * to zero so that the serial ports also start out in a known state.
594 csa_writeio(resp, BA0_CLKCR1, 0);
595 csa_writeio(resp, BA0_SERMC1, 0);
598 * If we are in AC97 mode, then we must set the part to a host controlled
599 * AC-link. Otherwise, we won't be able to bring up the link.
602 csa_writeio(resp, BA0_SERACC, SERACC_HSP | SERACC_CODEC_TYPE_1_03); /* 1.03 codec */
604 csa_writeio(resp, BA0_SERACC, SERACC_HSP | SERACC_CODEC_TYPE_2_0); /* 2.0 codec */
608 * Drive the ARST# pin low for a minimum of 1uS (as defined in the AC97
609 * spec) and then drive it high. This is done for non AC97 modes since
610 * there might be logic external to the CS461x that uses the ARST# line
613 csa_writeio(resp, BA0_ACCTL, 1);
615 csa_writeio(resp, BA0_ACCTL, 0);
617 csa_writeio(resp, BA0_ACCTL, ACCTL_RSTN);
620 * The first thing we do here is to enable sync generation. As soon
621 * as we start receiving bit clock, we'll start producing the SYNC
624 csa_writeio(resp, BA0_ACCTL, ACCTL_ESYN | ACCTL_RSTN);
627 * Now wait for a short while to allow the AC97 part to start
628 * generating bit clock (so we don't try to start the PLL without an
634 * Set the serial port timing configuration, so that
635 * the clock control circuit gets its clock from the correct place.
637 csa_writeio(resp, BA0_SERMC1, SERMC1_PTC_AC97);
641 * Write the selected clock control setup to the hardware. Do not turn on
642 * SWCE yet (if requested), so that the devices clocked by the output of
643 * PLL are not clocked until the PLL is stable.
645 csa_writeio(resp, BA0_PLLCC, PLLCC_LPF_1050_2780_KHZ | PLLCC_CDR_73_104_MHZ);
646 csa_writeio(resp, BA0_PLLM, 0x3a);
647 csa_writeio(resp, BA0_CLKCR2, CLKCR2_PDIVS_8);
652 csa_writeio(resp, BA0_CLKCR1, CLKCR1_PLLP);
655 * Wait until the PLL has stabilized.
660 * Turn on clocking of the core so that we can setup the serial ports.
662 csa_writeio(resp, BA0_CLKCR1, csa_readio(resp, BA0_CLKCR1) | CLKCR1_SWCE);
665 * Fill the serial port FIFOs with silence.
667 csa_clearserialfifos(resp);
670 * Set the serial port FIFO pointer to the first sample in the FIFO.
673 csa_writeio(resp, BA0_SERBSP, 0);
677 * Write the serial port configuration to the part. The master
678 * enable bit is not set until all other values have been written.
680 csa_writeio(resp, BA0_SERC1, SERC1_SO1F_AC97 | SERC1_SO1EN);
681 csa_writeio(resp, BA0_SERC2, SERC2_SI1F_AC97 | SERC1_SO1EN);
682 csa_writeio(resp, BA0_SERMC1, SERMC1_PTC_AC97 | SERMC1_MSPE);
685 * Wait for the codec ready signal from the AC97 codec.
688 for (i = 0 ; i < 1000 ; i++) {
690 * First, lets wait a short while to let things settle out a bit,
691 * and to prevent retrying the read too quickly.
696 * Read the AC97 status register to see if we've seen a CODEC READY
697 * signal from the AC97 codec.
699 acsts = csa_readio(resp, BA0_ACSTS);
700 if ((acsts & ACSTS_CRDY) != 0)
705 * Make sure we sampled CODEC READY.
707 if ((acsts & ACSTS_CRDY) == 0)
711 * Assert the vaid frame signal so that we can start sending commands
714 csa_writeio(resp, BA0_ACCTL, ACCTL_VFRM | ACCTL_ESYN | ACCTL_RSTN);
717 * Wait until we've sampled input slots 3 and 4 as valid, meaning that
718 * the codec is pumping ADC data across the AC-link.
721 for (i = 0 ; i < 1000 ; i++) {
723 * First, lets wait a short while to let things settle out a bit,
724 * and to prevent retrying the read too quickly.
727 DELAY(10000000L); /* clw */
732 * Read the input slot valid register and see if input slots 3 and
735 acisv = csa_readio(resp, BA0_ACISV);
736 if ((acisv & (ACISV_ISV3 | ACISV_ISV4)) == (ACISV_ISV3 | ACISV_ISV4))
740 * Make sure we sampled valid input slots 3 and 4. If not, then return
743 if ((acisv & (ACISV_ISV3 | ACISV_ISV4)) != (ACISV_ISV3 | ACISV_ISV4))
747 * Now, assert valid frame and the slot 3 and 4 valid bits. This will
748 * commense the transfer of digital audio data to the AC97 codec.
750 csa_writeio(resp, BA0_ACOSV, ACOSV_SLV3 | ACOSV_SLV4);
753 * Power down the DAC and ADC. We will power them up (if) when we need
757 csa_writeio(resp, BA0_AC97_POWERDOWN, 0x300);
761 * Turn off the Processor by turning off the software clock enable flag in
762 * the clock control register.
765 clkcr1 = csa_readio(resp, BA0_CLKCR1) & ~CLKCR1_SWCE;
766 csa_writeio(resp, BA0_CLKCR1, clkcr1);
770 * Enable interrupts on the part.
773 csa_writeio(resp, BA0_HICR, HICR_IEV | HICR_CHGM);
780 csa_clearserialfifos(csa_res *resp)
783 u_int8_t clkcr1, serbst;
786 * See if the devices are powered down. If so, we must power them up first
787 * or they will not respond.
790 clkcr1 = csa_readio(resp, BA0_CLKCR1);
791 if ((clkcr1 & CLKCR1_SWCE) == 0) {
792 csa_writeio(resp, BA0_CLKCR1, clkcr1 | CLKCR1_SWCE);
797 * We want to clear out the serial port FIFOs so we don't end up playing
798 * whatever random garbage happens to be in them. We fill the sample FIFOs
799 * with zero (silence).
801 csa_writeio(resp, BA0_SERBWP, 0);
803 /* Fill all 256 sample FIFO locations. */
805 for (i = 0 ; i < 256 ; i++) {
806 /* Make sure the previous FIFO write operation has completed. */
807 for (j = 0 ; j < 5 ; j++) {
809 serbst = csa_readio(resp, BA0_SERBST);
810 if ((serbst & SERBST_WBSY) == 0)
813 if ((serbst & SERBST_WBSY) != 0) {
815 csa_writeio(resp, BA0_CLKCR1, clkcr1);
817 /* Write the serial port FIFO index. */
818 csa_writeio(resp, BA0_SERBAD, i);
819 /* Tell the serial port to load the new value into the FIFO location. */
820 csa_writeio(resp, BA0_SERBCM, SERBCM_WRC);
823 * Now, if we powered up the devices, then power them back down again.
824 * This is kinda ugly, but should never happen.
827 csa_writeio(resp, BA0_CLKCR1, clkcr1);
831 csa_resetdsp(csa_res *resp)
836 * Write the reset bit of the SP control register.
838 csa_writemem(resp, BA1_SPCR, SPCR_RSTSP);
841 * Write the control register.
843 csa_writemem(resp, BA1_SPCR, SPCR_DRQEN);
846 * Clear the trap registers.
848 for (i = 0 ; i < 8 ; i++) {
849 csa_writemem(resp, BA1_DREG, DREG_REGID_TRAP_SELECT + i);
850 csa_writemem(resp, BA1_TWPR, 0xffff);
852 csa_writemem(resp, BA1_DREG, 0);
855 * Set the frame timer to reflect the number of cycles per frame.
857 csa_writemem(resp, BA1_FRMT, 0xadf);
861 csa_downloadimage(csa_res *resp)
864 u_int32_t tmp, src, dst, count, data;
866 for (i = 0; i < CLEAR__COUNT; i++) {
867 dst = ClrStat[i].BA1__DestByteOffset;
868 count = ClrStat[i].BA1__SourceSize;
869 for (tmp = 0; tmp < count; tmp += 4)
870 csa_writemem(resp, dst + tmp, 0x00000000);
873 for (i = 0; i < FILL__COUNT; i++) {
875 dst = FillStat[i].Offset;
876 count = FillStat[i].Size;
877 for (tmp = 0; tmp < count; tmp += 4) {
878 data = FillStat[i].pFill[src];
879 csa_writemem(resp, dst + tmp, data);
888 csa_readcodec(csa_res *resp, u_long offset, u_int32_t *data)
891 u_int32_t acctl, acsts;
894 * Make sure that there is not data sitting around from a previous
895 * uncompleted access. ACSDA = Status Data Register = 47Ch
897 csa_readio(resp, BA0_ACSDA);
900 * Setup the AC97 control registers on the CS461x to send the
901 * appropriate command to the AC97 to perform the read.
902 * ACCAD = Command Address Register = 46Ch
903 * ACCDA = Command Data Register = 470h
904 * ACCTL = Control Register = 460h
905 * set DCV - will clear when process completed
906 * set CRW - Read command
907 * set VFRM - valid frame enabled
908 * set ESYN - ASYNC generation enabled
909 * set RSTN - ARST# inactive, AC97 codec not reset
913 * Get the actual AC97 register from the offset
915 csa_writeio(resp, BA0_ACCAD, offset - BA0_AC97_RESET);
916 csa_writeio(resp, BA0_ACCDA, 0);
917 csa_writeio(resp, BA0_ACCTL, ACCTL_DCV | ACCTL_CRW | ACCTL_VFRM | ACCTL_ESYN | ACCTL_RSTN);
920 * Wait for the read to occur.
923 for (i = 0 ; i < 10 ; i++) {
925 * First, we want to wait for a short time.
930 * Now, check to see if the read has completed.
931 * ACCTL = 460h, DCV should be reset by now and 460h = 17h
933 acctl = csa_readio(resp, BA0_ACCTL);
934 if ((acctl & ACCTL_DCV) == 0)
939 * Make sure the read completed.
941 if ((acctl & ACCTL_DCV) != 0)
945 * Wait for the valid status bit to go active.
948 for (i = 0 ; i < 10 ; i++) {
950 * Read the AC97 status register.
951 * ACSTS = Status Register = 464h
953 acsts = csa_readio(resp, BA0_ACSTS);
955 * See if we have valid status.
956 * VSTS - Valid Status
958 if ((acsts & ACSTS_VSTS) != 0)
961 * Wait for a short while.
967 * Make sure we got valid status.
969 if ((acsts & ACSTS_VSTS) == 0)
973 * Read the data returned from the AC97 register.
974 * ACSDA = Status Data Register = 474h
976 *data = csa_readio(resp, BA0_ACSDA);
982 csa_writecodec(csa_res *resp, u_long offset, u_int32_t data)
988 * Setup the AC97 control registers on the CS461x to send the
989 * appropriate command to the AC97 to perform the write.
990 * ACCAD = Command Address Register = 46Ch
991 * ACCDA = Command Data Register = 470h
992 * ACCTL = Control Register = 460h
993 * set DCV - will clear when process completed
994 * set VFRM - valid frame enabled
995 * set ESYN - ASYNC generation enabled
996 * set RSTN - ARST# inactive, AC97 codec not reset
1000 * Get the actual AC97 register from the offset
1002 csa_writeio(resp, BA0_ACCAD, offset - BA0_AC97_RESET);
1003 csa_writeio(resp, BA0_ACCDA, data);
1004 csa_writeio(resp, BA0_ACCTL, ACCTL_DCV | ACCTL_VFRM | ACCTL_ESYN | ACCTL_RSTN);
1007 * Wait for the write to occur.
1010 for (i = 0 ; i < 10 ; i++) {
1012 * First, we want to wait for a short time.
1017 * Now, check to see if the read has completed.
1018 * ACCTL = 460h, DCV should be reset by now and 460h = 17h
1020 acctl = csa_readio(resp, BA0_ACCTL);
1021 if ((acctl & ACCTL_DCV) == 0)
1026 * Make sure the write completed.
1028 if ((acctl & ACCTL_DCV) != 0)
1035 csa_readio(csa_res *resp, u_long offset)
1039 if (offset < BA0_AC97_RESET)
1040 return bus_space_read_4(rman_get_bustag(resp->io), rman_get_bushandle(resp->io), offset) & 0xffffffff;
1042 if (csa_readcodec(resp, offset, &ul))
1049 csa_writeio(csa_res *resp, u_long offset, u_int32_t data)
1051 if (offset < BA0_AC97_RESET)
1052 bus_space_write_4(rman_get_bustag(resp->io), rman_get_bushandle(resp->io), offset, data);
1054 csa_writecodec(resp, offset, data);
1058 csa_readmem(csa_res *resp, u_long offset)
1060 return bus_space_read_4(rman_get_bustag(resp->mem), rman_get_bushandle(resp->mem), offset);
1064 csa_writemem(csa_res *resp, u_long offset, u_int32_t data)
1066 bus_space_write_4(rman_get_bustag(resp->mem), rman_get_bushandle(resp->mem), offset, data);
1069 static device_method_t csa_methods[] = {
1070 /* Device interface */
1071 DEVMETHOD(device_probe, csa_probe),
1072 DEVMETHOD(device_attach, csa_attach),
1073 DEVMETHOD(device_detach, csa_detach),
1074 DEVMETHOD(device_shutdown, bus_generic_shutdown),
1075 DEVMETHOD(device_suspend, bus_generic_suspend),
1076 DEVMETHOD(device_resume, csa_resume),
1079 DEVMETHOD(bus_print_child, bus_generic_print_child),
1080 DEVMETHOD(bus_alloc_resource, csa_alloc_resource),
1081 DEVMETHOD(bus_release_resource, csa_release_resource),
1082 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
1083 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
1084 DEVMETHOD(bus_setup_intr, csa_setup_intr),
1085 DEVMETHOD(bus_teardown_intr, csa_teardown_intr),
1090 static driver_t csa_driver = {
1093 sizeof(struct csa_softc),
1097 * csa can be attached to a pci bus.
1099 DRIVER_MODULE(snd_csa, pci, csa_driver, csa_devclass, 0, 0);
1100 MODULE_DEPEND(snd_csa, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
1101 MODULE_VERSION(snd_csa, 1);