/* * Copyright (c) 1999 Seigo Tanimura * All rights reserved. * * Portions of this source are based on cwcealdr.cpp and dhwiface.cpp in * cwcealdr1.zip, the sample sources by Crystal Semiconductor. * Copyright (c) 1996-1998 Crystal Semiconductor Corp. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* This is the pci device id. */ #define CS4610_PCI_ID 0x60011013 #define CS4614_PCI_ID 0x60031013 #define CS4615_PCI_ID 0x60041013 /* Here is the parameter structure per a device. */ struct csa_softc { device_t dev; /* device */ csa_res res; /* resources */ device_t pcm; /* pcm device */ driver_intr_t* pcmintr; /* pcm intr */ void *pcmintr_arg; /* pcm intr arg */ device_t midi; /* midi device */ driver_intr_t* midiintr; /* midi intr */ void *midiintr_arg; /* midi intr arg */ void *ih; /* cookie */ struct csa_card *card; struct csa_bridgeinfo binfo; /* The state of this bridge. */ }; typedef struct csa_softc *sc_p; static int csa_probe(device_t dev); static int csa_attach(device_t dev); static struct resource *csa_alloc_resource(device_t bus, device_t child, int type, int *rid, u_long start, u_long end, u_long count, u_int flags); static int csa_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r); static int csa_setup_intr(device_t bus, device_t child, struct resource *irq, int flags, driver_intr_t *intr, void *arg, void **cookiep); static int csa_teardown_intr(device_t bus, device_t child, struct resource *irq, void *cookie); static driver_intr_t csa_intr; static int csa_initialize(sc_p scp); static void csa_resetdsp(csa_res *resp); static int csa_downloadimage(csa_res *resp); static devclass_t csa_devclass; static void amp_none(void) { } static void amp_voyetra(void) { } static int clkrun_hack(int run) { #ifdef __i386__ devclass_t pci_devclass; device_t *pci_devices, *pci_children, *busp, *childp; int pci_count = 0, pci_childcount = 0; int i, j, port; u_int16_t control; bus_space_tag_t btag; if ((pci_devclass = devclass_find("pci")) == NULL) { return ENXIO; } devclass_get_devices(pci_devclass, &pci_devices, &pci_count); for (i = 0, busp = pci_devices; i < pci_count; i++, busp++) { pci_childcount = 0; device_get_children(*busp, &pci_children, &pci_childcount); for (j = 0, childp = pci_children; j < pci_childcount; j++, childp++) { if (pci_get_vendor(*childp) == 0x8086 && pci_get_device(*childp) == 0x7113) { port = (pci_read_config(*childp, 0x41, 1) << 8) + 0x10; /* XXX */ btag = I386_BUS_SPACE_IO; control = bus_space_read_2(btag, 0x0, port); control &= ~0x2000; control |= run? 0 : 0x2000; bus_space_write_2(btag, 0x0, port, control); free(pci_devices, M_TEMP); free(pci_children, M_TEMP); return 0; } } free(pci_children, M_TEMP); } free(pci_devices, M_TEMP); return ENXIO; #else return 0; #endif } static struct csa_card cards_4610[] = { {0, 0, "Unknown/invalid SSID (CS4610)", NULL, NULL, NULL, 0}, }; static struct csa_card cards_4614[] = { {0x1489, 0x7001, "Genius Soundmaker 128 value", amp_none, NULL, NULL, 0}, {0x5053, 0x3357, "Turtle Beach Santa Cruz", amp_voyetra, NULL, NULL, 1}, {0x1071, 0x6003, "Mitac MI6020/21", amp_voyetra, NULL, NULL, 0}, {0x14AF, 0x0050, "Hercules Game Theatre XP", NULL, NULL, NULL, 0}, {0x1681, 0x0050, "Hercules Game Theatre XP", NULL, NULL, NULL, 0}, /* Not sure if the 570 needs the clkrun hack */ {0x1014, 0x0132, "Thinkpad 570", amp_none, NULL, clkrun_hack, 0}, {0x1014, 0x0153, "Thinkpad 600X/A20/T20", amp_none, NULL, clkrun_hack, 0}, {0x1014, 0x1010, "Thinkpad 600E (unsupported)", NULL, NULL, NULL, 0}, {0, 0, "Unknown/invalid SSID (CS4614)", NULL, NULL, NULL, 0}, }; static struct csa_card cards_4615[] = { {0, 0, "Unknown/invalid SSID (CS4615)", NULL, NULL, NULL, 0}, }; static struct csa_card nocard = {0, 0, "unknown", NULL, NULL, NULL, 0}; struct card_type { u_int32_t devid; char *name; struct csa_card *cards; }; static struct card_type cards[] = { {CS4610_PCI_ID, "CS4610/CS4611", cards_4610}, {CS4614_PCI_ID, "CS4280/CS4614/CS4622/CS4624/CS4630", cards_4614}, {CS4615_PCI_ID, "CS4615", cards_4615}, {0, NULL, NULL}, }; static struct card_type * csa_findcard(device_t dev) { int i; i = 0; while (cards[i].devid != 0) { if (pci_get_devid(dev) == cards[i].devid) return &cards[i]; i++; } return NULL; } struct csa_card * csa_findsubcard(device_t dev) { int i; struct card_type *card; struct csa_card *subcard; card = csa_findcard(dev); if (card == NULL) return &nocard; subcard = card->cards; i = 0; while (subcard[i].subvendor != 0) { if (pci_get_subvendor(dev) == subcard[i].subvendor && pci_get_subdevice(dev) == subcard[i].subdevice) { return &subcard[i]; } i++; } return &subcard[i]; } static int csa_probe(device_t dev) { struct card_type *card; card = csa_findcard(dev); if (card) { device_set_desc(dev, card->name); return 0; } return ENXIO; } static int csa_attach(device_t dev) { u_int32_t stcmd; sc_p scp; csa_res *resp; struct sndcard_func *func; int error = ENXIO; scp = device_get_softc(dev); /* Fill in the softc. */ bzero(scp, sizeof(*scp)); scp->dev = dev; /* Wake up the device. */ stcmd = pci_read_config(dev, PCIR_COMMAND, 2); if ((stcmd & PCIM_CMD_MEMEN) == 0 || (stcmd & PCIM_CMD_BUSMASTEREN) == 0) { stcmd |= (PCIM_CMD_MEMEN | PCIM_CMD_BUSMASTEREN); pci_write_config(dev, PCIR_COMMAND, stcmd, 2); } /* Allocate the resources. */ resp = &scp->res; scp->card = csa_findsubcard(dev); scp->binfo.card = scp->card; printf("csa: card is %s\n", scp->card->name); resp->io_rid = PCIR_MAPS; resp->io = bus_alloc_resource(dev, SYS_RES_MEMORY, &resp->io_rid, 0, ~0, 1, RF_ACTIVE); if (resp->io == NULL) return (ENXIO); resp->mem_rid = PCIR_MAPS + 4; resp->mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &resp->mem_rid, 0, ~0, 1, RF_ACTIVE); if (resp->mem == NULL) goto err_io; resp->irq_rid = 0; resp->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &resp->irq_rid, 0, ~0, 1, RF_ACTIVE | RF_SHAREABLE); if (resp->irq == NULL) goto err_mem; /* Enable interrupt. */ if (snd_setup_intr(dev, resp->irq, INTR_MPSAFE, csa_intr, scp, &scp->ih)) goto err_intr; #if 0 if ((csa_readio(resp, BA0_HISR) & HISR_INTENA) == 0) csa_writeio(resp, BA0_HICR, HICR_IEV | HICR_CHGM); #endif /* Initialize the chip. */ if (csa_initialize(scp)) goto err_teardown; /* Reset the Processor. */ csa_resetdsp(resp); /* Download the Processor Image to the processor. */ if (csa_downloadimage(resp)) goto err_teardown; /* Attach the children. */ /* PCM Audio */ func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO); if (func == NULL) { error = ENOMEM; goto err_teardown; } func->varinfo = &scp->binfo; func->func = SCF_PCM; scp->pcm = device_add_child(dev, "pcm", -1); device_set_ivars(scp->pcm, func); /* Midi Interface */ func = malloc(sizeof(struct sndcard_func), M_DEVBUF, M_NOWAIT | M_ZERO); if (func == NULL) { error = ENOMEM; goto err_teardown; } func->varinfo = &scp->binfo; func->func = SCF_MIDI; scp->midi = device_add_child(dev, "midi", -1); device_set_ivars(scp->midi, func); bus_generic_attach(dev); return (0); err_teardown: bus_teardown_intr(dev, resp->irq, scp->ih); err_intr: bus_release_resource(dev, SYS_RES_IRQ, resp->irq_rid, resp->irq); err_mem: bus_release_resource(dev, SYS_RES_MEMORY, resp->mem_rid, resp->mem); err_io: bus_release_resource(dev, SYS_RES_MEMORY, resp->io_rid, resp->io); return (error); } static int csa_detach(device_t dev) { sc_p scp; scp = device_get_softc(dev); device_delete_child(dev, scp->midi); device_delete_child(dev, scp->pcm); return bus_generic_detach(dev); } static struct resource * csa_alloc_resource(device_t bus, device_t child, int type, int *rid, u_long start, u_long end, u_long count, u_int flags) { sc_p scp; csa_res *resp; struct resource *res; scp = device_get_softc(bus); resp = &scp->res; switch (type) { case SYS_RES_IRQ: if (*rid != 0) return (NULL); res = resp->irq; break; case SYS_RES_MEMORY: switch (*rid) { case PCIR_MAPS: res = resp->io; break; case PCIR_MAPS + 4: res = resp->mem; break; default: return (NULL); } break; default: return (NULL); } return res; } static int csa_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r) { return (0); } /* * The following three functions deal with interrupt handling. * An interrupt is primarily handled by the bridge driver. * The bridge driver then determines the child devices to pass * the interrupt. Certain information of the device can be read * only once(eg the value of HISR). The bridge driver is responsible * to pass such the information to the children. */ static int csa_setup_intr(device_t bus, device_t child, struct resource *irq, int flags, driver_intr_t *intr, void *arg, void **cookiep) { sc_p scp; csa_res *resp; struct sndcard_func *func; scp = device_get_softc(bus); resp = &scp->res; /* * Look at the function code of the child to determine * the appropriate hander for it. */ func = device_get_ivars(child); if (func == NULL || irq != resp->irq) return (EINVAL); switch (func->func) { case SCF_PCM: scp->pcmintr = intr; scp->pcmintr_arg = arg; break; case SCF_MIDI: scp->midiintr = intr; scp->midiintr_arg = arg; break; default: return (EINVAL); } *cookiep = scp; if ((csa_readio(resp, BA0_HISR) & HISR_INTENA) == 0) csa_writeio(resp, BA0_HICR, HICR_IEV | HICR_CHGM); return (0); } static int csa_teardown_intr(device_t bus, device_t child, struct resource *irq, void *cookie) { sc_p scp; csa_res *resp; struct sndcard_func *func; scp = device_get_softc(bus); resp = &scp->res; /* * Look at the function code of the child to determine * the appropriate hander for it. */ func = device_get_ivars(child); if (func == NULL || irq != resp->irq || cookie != scp) return (EINVAL); switch (func->func) { case SCF_PCM: scp->pcmintr = NULL; scp->pcmintr_arg = NULL; break; case SCF_MIDI: scp->midiintr = NULL; scp->midiintr_arg = NULL; break; default: return (EINVAL); } return (0); } /* The interrupt handler */ static void csa_intr(void *arg) { sc_p scp = arg; csa_res *resp; u_int32_t hisr; resp = &scp->res; /* Is this interrupt for us? */ hisr = csa_readio(resp, BA0_HISR); if ((hisr & 0x7fffffff) == 0) { /* Throw an eoi. */ csa_writeio(resp, BA0_HICR, HICR_IEV | HICR_CHGM); return; } /* * Pass the value of HISR via struct csa_bridgeinfo. * The children get access through their ivars. */ scp->binfo.hisr = hisr; /* Invoke the handlers of the children. */ if ((hisr & (HISR_VC0 | HISR_VC1)) != 0 && scp->pcmintr != NULL) { scp->pcmintr(scp->pcmintr_arg); hisr &= ~(HISR_VC0 | HISR_VC1); } if ((hisr & HISR_MIDI) != 0 && scp->midiintr != NULL) { scp->midiintr(scp->midiintr_arg); hisr &= ~HISR_MIDI; } /* Throw an eoi. */ csa_writeio(resp, BA0_HICR, HICR_IEV | HICR_CHGM); } static int csa_initialize(sc_p scp) { int i; u_int32_t acsts, acisv; csa_res *resp; resp = &scp->res; /* * First, blast the clock control register to zero so that the PLL starts * out in a known state, and blast the master serial port control register * to zero so that the serial ports also start out in a known state. */ csa_writeio(resp, BA0_CLKCR1, 0); csa_writeio(resp, BA0_SERMC1, 0); /* * If we are in AC97 mode, then we must set the part to a host controlled * AC-link. Otherwise, we won't be able to bring up the link. */ #if 1 csa_writeio(resp, BA0_SERACC, SERACC_HSP | SERACC_CODEC_TYPE_1_03); /* 1.03 codec */ #else csa_writeio(resp, BA0_SERACC, SERACC_HSP | SERACC_CODEC_TYPE_2_0); /* 2.0 codec */ #endif /* 1 */ /* * Drive the ARST# pin low for a minimum of 1uS (as defined in the AC97 * spec) and then drive it high. This is done for non AC97 modes since * there might be logic external to the CS461x that uses the ARST# line * for a reset. */ csa_writeio(resp, BA0_ACCTL, 1); DELAY(50); csa_writeio(resp, BA0_ACCTL, 0); DELAY(50); csa_writeio(resp, BA0_ACCTL, ACCTL_RSTN); /* * The first thing we do here is to enable sync generation. As soon * as we start receiving bit clock, we'll start producing the SYNC * signal. */ csa_writeio(resp, BA0_ACCTL, ACCTL_ESYN | ACCTL_RSTN); /* * Now wait for a short while to allow the AC97 part to start * generating bit clock (so we don't try to start the PLL without an * input clock). */ DELAY(50000); /* * Set the serial port timing configuration, so that * the clock control circuit gets its clock from the correct place. */ csa_writeio(resp, BA0_SERMC1, SERMC1_PTC_AC97); DELAY(700000); /* * Write the selected clock control setup to the hardware. Do not turn on * SWCE yet (if requested), so that the devices clocked by the output of * PLL are not clocked until the PLL is stable. */ csa_writeio(resp, BA0_PLLCC, PLLCC_LPF_1050_2780_KHZ | PLLCC_CDR_73_104_MHZ); csa_writeio(resp, BA0_PLLM, 0x3a); csa_writeio(resp, BA0_CLKCR2, CLKCR2_PDIVS_8); /* * Power up the PLL. */ csa_writeio(resp, BA0_CLKCR1, CLKCR1_PLLP); /* * Wait until the PLL has stabilized. */ DELAY(5000); /* * Turn on clocking of the core so that we can setup the serial ports. */ csa_writeio(resp, BA0_CLKCR1, csa_readio(resp, BA0_CLKCR1) | CLKCR1_SWCE); /* * Fill the serial port FIFOs with silence. */ csa_clearserialfifos(resp); /* * Set the serial port FIFO pointer to the first sample in the FIFO. */ #if notdef csa_writeio(resp, BA0_SERBSP, 0); #endif /* notdef */ /* * Write the serial port configuration to the part. The master * enable bit is not set until all other values have been written. */ csa_writeio(resp, BA0_SERC1, SERC1_SO1F_AC97 | SERC1_SO1EN); csa_writeio(resp, BA0_SERC2, SERC2_SI1F_AC97 | SERC1_SO1EN); csa_writeio(resp, BA0_SERMC1, SERMC1_PTC_AC97 | SERMC1_MSPE); /* * Wait for the codec ready signal from the AC97 codec. */ acsts = 0; for (i = 0 ; i < 1000 ; i++) { /* * First, lets wait a short while to let things settle out a bit, * and to prevent retrying the read too quickly. */ DELAY(125); /* * Read the AC97 status register to see if we've seen a CODEC READY * signal from the AC97 codec. */ acsts = csa_readio(resp, BA0_ACSTS); if ((acsts & ACSTS_CRDY) != 0) break; } /* * Make sure we sampled CODEC READY. */ if ((acsts & ACSTS_CRDY) == 0) return (ENXIO); /* * Assert the vaid frame signal so that we can start sending commands * to the AC97 codec. */ csa_writeio(resp, BA0_ACCTL, ACCTL_VFRM | ACCTL_ESYN | ACCTL_RSTN); /* * Wait until we've sampled input slots 3 and 4 as valid, meaning that * the codec is pumping ADC data across the AC-link. */ acisv = 0; for (i = 0 ; i < 1000 ; i++) { /* * First, lets wait a short while to let things settle out a bit, * and to prevent retrying the read too quickly. */ #if notdef DELAY(10000000L); /* clw */ #else DELAY(1000); #endif /* notdef */ /* * Read the input slot valid register and see if input slots 3 and * 4 are valid yet. */ acisv = csa_readio(resp, BA0_ACISV); if ((acisv & (ACISV_ISV3 | ACISV_ISV4)) == (ACISV_ISV3 | ACISV_ISV4)) break; } /* * Make sure we sampled valid input slots 3 and 4. If not, then return * an error. */ if ((acisv & (ACISV_ISV3 | ACISV_ISV4)) != (ACISV_ISV3 | ACISV_ISV4)) return (ENXIO); /* * Now, assert valid frame and the slot 3 and 4 valid bits. This will * commense the transfer of digital audio data to the AC97 codec. */ csa_writeio(resp, BA0_ACOSV, ACOSV_SLV3 | ACOSV_SLV4); /* * Power down the DAC and ADC. We will power them up (if) when we need * them. */ #if notdef csa_writeio(resp, BA0_AC97_POWERDOWN, 0x300); #endif /* notdef */ /* * Turn off the Processor by turning off the software clock enable flag in * the clock control register. */ #if notdef clkcr1 = csa_readio(resp, BA0_CLKCR1) & ~CLKCR1_SWCE; csa_writeio(resp, BA0_CLKCR1, clkcr1); #endif /* notdef */ /* * Enable interrupts on the part. */ #if 0 csa_writeio(resp, BA0_HICR, HICR_IEV | HICR_CHGM); #endif /* notdef */ return (0); } void csa_clearserialfifos(csa_res *resp) { int i, j, pwr; u_int8_t clkcr1, serbst; /* * See if the devices are powered down. If so, we must power them up first * or they will not respond. */ pwr = 1; clkcr1 = csa_readio(resp, BA0_CLKCR1); if ((clkcr1 & CLKCR1_SWCE) == 0) { csa_writeio(resp, BA0_CLKCR1, clkcr1 | CLKCR1_SWCE); pwr = 0; } /* * We want to clear out the serial port FIFOs so we don't end up playing * whatever random garbage happens to be in them. We fill the sample FIFOs * with zero (silence). */ csa_writeio(resp, BA0_SERBWP, 0); /* Fill all 256 sample FIFO locations. */ serbst = 0; for (i = 0 ; i < 256 ; i++) { /* Make sure the previous FIFO write operation has completed. */ for (j = 0 ; j < 5 ; j++) { DELAY(100); serbst = csa_readio(resp, BA0_SERBST); if ((serbst & SERBST_WBSY) == 0) break; } if ((serbst & SERBST_WBSY) != 0) { if (!pwr) csa_writeio(resp, BA0_CLKCR1, clkcr1); } /* Write the serial port FIFO index. */ csa_writeio(resp, BA0_SERBAD, i); /* Tell the serial port to load the new value into the FIFO location. */ csa_writeio(resp, BA0_SERBCM, SERBCM_WRC); } /* * Now, if we powered up the devices, then power them back down again. * This is kinda ugly, but should never happen. */ if (!pwr) csa_writeio(resp, BA0_CLKCR1, clkcr1); } static void csa_resetdsp(csa_res *resp) { int i; /* * Write the reset bit of the SP control register. */ csa_writemem(resp, BA1_SPCR, SPCR_RSTSP); /* * Write the control register. */ csa_writemem(resp, BA1_SPCR, SPCR_DRQEN); /* * Clear the trap registers. */ for (i = 0 ; i < 8 ; i++) { csa_writemem(resp, BA1_DREG, DREG_REGID_TRAP_SELECT + i); csa_writemem(resp, BA1_TWPR, 0xffff); } csa_writemem(resp, BA1_DREG, 0); /* * Set the frame timer to reflect the number of cycles per frame. */ csa_writemem(resp, BA1_FRMT, 0xadf); } static int csa_downloadimage(csa_res *resp) { int i; u_int32_t tmp, src, dst, count, data; for (i = 0; i < CLEAR__COUNT; i++) { dst = ClrStat[i].BA1__DestByteOffset; count = ClrStat[i].BA1__SourceSize; for (tmp = 0; tmp < count; tmp += 4) csa_writemem(resp, dst + tmp, 0x00000000); } for (i = 0; i < FILL__COUNT; i++) { src = 0; dst = FillStat[i].Offset; count = FillStat[i].Size; for (tmp = 0; tmp < count; tmp += 4) { data = FillStat[i].pFill[src]; csa_writemem(resp, dst + tmp, data); src++; } } return (0); } int csa_readcodec(csa_res *resp, u_long offset, u_int32_t *data) { int i; u_int32_t acsda, acctl, acsts; /* * Make sure that there is not data sitting around from a previous * uncompleted access. ACSDA = Status Data Register = 47Ch */ acsda = csa_readio(resp, BA0_ACSDA); /* * Setup the AC97 control registers on the CS461x to send the * appropriate command to the AC97 to perform the read. * ACCAD = Command Address Register = 46Ch * ACCDA = Command Data Register = 470h * ACCTL = Control Register = 460h * set DCV - will clear when process completed * set CRW - Read command * set VFRM - valid frame enabled * set ESYN - ASYNC generation enabled * set RSTN - ARST# inactive, AC97 codec not reset */ /* * Get the actual AC97 register from the offset */ csa_writeio(resp, BA0_ACCAD, offset - BA0_AC97_RESET); csa_writeio(resp, BA0_ACCDA, 0); csa_writeio(resp, BA0_ACCTL, ACCTL_DCV | ACCTL_CRW | ACCTL_VFRM | ACCTL_ESYN | ACCTL_RSTN); /* * Wait for the read to occur. */ acctl = 0; for (i = 0 ; i < 10 ; i++) { /* * First, we want to wait for a short time. */ DELAY(25); /* * Now, check to see if the read has completed. * ACCTL = 460h, DCV should be reset by now and 460h = 17h */ acctl = csa_readio(resp, BA0_ACCTL); if ((acctl & ACCTL_DCV) == 0) break; } /* * Make sure the read completed. */ if ((acctl & ACCTL_DCV) != 0) return (EAGAIN); /* * Wait for the valid status bit to go active. */ acsts = 0; for (i = 0 ; i < 10 ; i++) { /* * Read the AC97 status register. * ACSTS = Status Register = 464h */ acsts = csa_readio(resp, BA0_ACSTS); /* * See if we have valid status. * VSTS - Valid Status */ if ((acsts & ACSTS_VSTS) != 0) break; /* * Wait for a short while. */ DELAY(25); } /* * Make sure we got valid status. */ if ((acsts & ACSTS_VSTS) == 0) return (EAGAIN); /* * Read the data returned from the AC97 register. * ACSDA = Status Data Register = 474h */ *data = csa_readio(resp, BA0_ACSDA); return (0); } int csa_writecodec(csa_res *resp, u_long offset, u_int32_t data) { int i; u_int32_t acctl; /* * Setup the AC97 control registers on the CS461x to send the * appropriate command to the AC97 to perform the write. * ACCAD = Command Address Register = 46Ch * ACCDA = Command Data Register = 470h * ACCTL = Control Register = 460h * set DCV - will clear when process completed * set VFRM - valid frame enabled * set ESYN - ASYNC generation enabled * set RSTN - ARST# inactive, AC97 codec not reset */ /* * Get the actual AC97 register from the offset */ csa_writeio(resp, BA0_ACCAD, offset - BA0_AC97_RESET); csa_writeio(resp, BA0_ACCDA, data); csa_writeio(resp, BA0_ACCTL, ACCTL_DCV | ACCTL_VFRM | ACCTL_ESYN | ACCTL_RSTN); /* * Wait for the write to occur. */ acctl = 0; for (i = 0 ; i < 10 ; i++) { /* * First, we want to wait for a short time. */ DELAY(25); /* * Now, check to see if the read has completed. * ACCTL = 460h, DCV should be reset by now and 460h = 17h */ acctl = csa_readio(resp, BA0_ACCTL); if ((acctl & ACCTL_DCV) == 0) break; } /* * Make sure the write completed. */ if ((acctl & ACCTL_DCV) != 0) return (EAGAIN); return (0); } u_int32_t csa_readio(csa_res *resp, u_long offset) { u_int32_t ul; if (offset < BA0_AC97_RESET) return bus_space_read_4(rman_get_bustag(resp->io), rman_get_bushandle(resp->io), offset) & 0xffffffff; else { if (csa_readcodec(resp, offset, &ul)) ul = 0; return (ul); } } void csa_writeio(csa_res *resp, u_long offset, u_int32_t data) { if (offset < BA0_AC97_RESET) bus_space_write_4(rman_get_bustag(resp->io), rman_get_bushandle(resp->io), offset, data); else csa_writecodec(resp, offset, data); } u_int32_t csa_readmem(csa_res *resp, u_long offset) { return bus_space_read_4(rman_get_bustag(resp->mem), rman_get_bushandle(resp->mem), offset); } void csa_writemem(csa_res *resp, u_long offset, u_int32_t data) { bus_space_write_4(rman_get_bustag(resp->mem), rman_get_bushandle(resp->mem), offset, data); } static device_method_t csa_methods[] = { /* Device interface */ DEVMETHOD(device_probe, csa_probe), DEVMETHOD(device_attach, csa_attach), DEVMETHOD(device_detach, csa_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD(device_suspend, bus_generic_suspend), DEVMETHOD(device_resume, bus_generic_resume), /* Bus interface */ DEVMETHOD(bus_print_child, bus_generic_print_child), DEVMETHOD(bus_alloc_resource, csa_alloc_resource), DEVMETHOD(bus_release_resource, csa_release_resource), DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), DEVMETHOD(bus_setup_intr, csa_setup_intr), DEVMETHOD(bus_teardown_intr, csa_teardown_intr), { 0, 0 } }; static driver_t csa_driver = { "csa", csa_methods, sizeof(struct csa_softc), }; /* * csa can be attached to a pci bus. */ DRIVER_MODULE(snd_csa, pci, csa_driver, csa_devclass, 0, 0); MODULE_DEPEND(snd_csa, snd_pcm, PCM_MINVER, PCM_PREFVER, PCM_MAXVER); MODULE_VERSION(snd_csa, 1);