/* * This file is part of the coreboot project. * * Copyright (C) 2008 Advanced Micro Devices, Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include "sb600.h" #define HDA_ICII_REG 0x68 #define HDA_ICII_BUSY (1 << 0) #define HDA_ICII_VALID (1 << 1) static int set_bits(u32 port, u32 mask, u32 val) { u32 dword; int count; /* Write (val & ~mask) to port */ val &= mask; dword = read32(port); dword &= ~mask; dword |= val; write32(port, dword); /* Wait for readback of register to * match what was just written to it */ count = 50; do { /* Wait 1ms based on BKDG wait time */ mdelay(1); dword = read32(port); dword &= mask; } while ((dword != val) && --count); /* Timeout occured */ if (!count) return -1; return 0; } static u32 codec_detect(u32 base) { u32 dword; /* Set Bit0 to 0 to enter reset state (BAR + 0x8)[0] */ if (set_bits(base + 0x08, 1, 0) == -1) goto no_codec; /* Set Bit 0 to 1 to exit reset state (BAR + 0x8)[0] */ if (set_bits(base + 0x08, 1, 1) == -1) goto no_codec; /* Delay for 1 ms since the BKDG does */ mdelay(1); /* Read in Codec location (BAR + 0xe)[3..0]*/ dword = read32(base + 0xe); dword &= 0x0F; if (!dword) goto no_codec; return dword; no_codec: /* Codec Not found */ /* Put HDA back in reset (BAR + 0x8) [0] */ set_bits(base + 0x08, 1, 0); printk(BIOS_DEBUG, "No codec!\n"); return 0; } static u32 cim_verb_data[] = { 0x01471c10, 0x01471d40, 0x01471e01, 0x01471f01, /* 1 */ 0x01571c12, 0x01571d10, 0x01571e01, 0x01571f01, /* 2 */ 0x01671c11, 0x01671d60, 0x01671e01, 0x01671f01, /* 3 */ 0x01771c14, 0x01771d20, 0x01771e01, 0x01771f01, /* 4 */ 0x01871c30, 0x01871d90, 0x01871ea1, 0x01871f01, /* 5 */ 0x01971cf0, 0x01971d11, 0x01971e11, 0x01971f41, /* 6 */ 0x01a71c80, 0x01a71d30, 0x01a71e81, 0x01a71f01, /* 7 */ 0x01b71cf0, 0x01b71d11, 0x01b71e11, 0x01b71f41, /* 8 */ 0x01c71cf0, 0x01c71d11, 0x01c71e11, 0x01c71f41, /* 9 */ 0x01d71cf0, 0x01d71d11, 0x01d71e11, 0x01d71f41, /* 10 */ 0x01e71c50, 0x01e71d11, 0x01e71e44, 0x01e71f01, /* 11 */ 0x01f71c60, 0x01f71d61, 0x01f71ec4, 0x01f71f01, }; static u32 find_verb(u32 viddid, u32 ** verb) { device_t azalia_dev = dev_find_slot(0, PCI_DEVFN(0x14, 2)); struct southbridge_amd_sb600_config *cfg = (struct southbridge_amd_sb600_config *)azalia_dev->chip_info; printk(BIOS_DEBUG, "Dev=%s\n", dev_path(azalia_dev)); printk(BIOS_DEBUG, "Default viddid=%x\n", cfg->hda_viddid); printk(BIOS_DEBUG, "Reading viddid=%x\n", viddid); if (!cfg) return 0; if (viddid != cfg->hda_viddid) return 0; *verb = (u32 *) cim_verb_data; return sizeof(cim_verb_data) / sizeof(u32); } /** * Wait 50usec for for the codec to indicate it is ready * no response would imply that the codec is non-operative */ static int wait_for_ready(u32 base) { /* Use a 50 usec timeout - the Linux kernel uses the * same duration */ int timeout = 50; while(timeout--) { u32 dword=read32(base + HDA_ICII_REG); if (!(dword & HDA_ICII_BUSY)) return 0; udelay(1); } return -1; } /** * Wait 50usec for for the codec to indicate that it accepted * the previous command. No response would imply that the code * is non-operative */ static int wait_for_valid(u32 base) { /* Use a 50 usec timeout - the Linux kernel uses the * same duration */ int timeout = 50; while(timeout--) { u32 dword = read32(base + HDA_ICII_REG); if ((dword & (HDA_ICII_VALID | HDA_ICII_BUSY)) == HDA_ICII_VALID) return 0; udelay(1); } return 1; } static void codec_init(u32 base, int addr) { u32 dword; u32 *verb; u32 verb_size; int i; /* 1 */ if (wait_for_ready(base) == -1) return; dword = (addr << 28) | 0x000f0000; write32(base + 0x60, dword); if (wait_for_valid(base) == -1) return; dword = read32(base + 0x64); /* 2 */ printk(BIOS_DEBUG, "codec viddid: %08x\n", dword); verb_size = find_verb(dword, &verb); if (!verb_size) { printk(BIOS_DEBUG, "No verb!\n"); return; } printk(BIOS_DEBUG, "verb_size: %d\n", verb_size); /* 3 */ for (i = 0; i < verb_size; i++) { if (wait_for_ready(base) == -1) return; write32(base + 0x60, verb[i]); if (wait_for_valid(base) == -1) return; } printk(BIOS_DEBUG, "verb loaded!\n"); } static void codecs_init(u32 base, u32 codec_mask) { int i; for (i = 2; i >= 0; i--) { if (codec_mask & (1 << i)) codec_init(base, i); } } static void hda_init(struct device *dev) { u8 byte; u32 dword; u32 base; struct resource *res; u32 codec_mask; device_t sm_dev; /* Enable azalia - PM_io 0x59[4], disable ac97 - PM_io 0x59[1..0] */ pm_iowrite(0x59, 0xB); /* Find the SMBus */ /* FIXME: Need to find out why the call below crashes. */ /*sm_dev = dev_find_device(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_ATI_SB600_SM, 0);*/ sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0)); /* Set routing pin - SMBus ExtFunc (0xf8/0xfc) */ pci_write_config32(sm_dev, 0xf8, 0x00); pci_write_config8(sm_dev, 0xfc, 0xAA); /* Set INTA - SMBus 0x63 [2..0] */ byte = pci_read_config8(sm_dev, 0x63); byte &= ~0x7; byte |= 0x0; /* INTA:0x0 - INTH:0x7 */ pci_write_config8(sm_dev, 0x63, byte); /* Program the 2C to 0x437b1002 */ dword = 0x437b1002; pci_write_config32(dev, 0x2c, dword); /* Read in BAR */ /* Is this right? HDA allows for a 64-bit BAR * but this is only setup for a 32-bit one */ res = find_resource(dev, 0x10); if (!res) return; base = (u32)res->base; printk(BIOS_DEBUG, "base = 0x%x\n", base); codec_mask = codec_detect(base); if (codec_mask) { printk(BIOS_DEBUG, "codec_mask = %02x\n", codec_mask); codecs_init(base, codec_mask); } } static struct pci_operations lops_pci = { .set_subsystem = pci_dev_set_subsystem, }; static struct device_operations hda_audio_ops = { .read_resources = pci_dev_read_resources, .set_resources = pci_dev_set_resources, .enable_resources = pci_dev_enable_resources, /*.enable = sb600_enable, */ .init = hda_init, .scan_bus = 0, .ops_pci = &lops_pci, }; static const struct pci_driver hdaaudio_driver __pci_driver = { .ops = &hda_audio_ops, .vendor = PCI_VENDOR_ID_ATI, .device = PCI_DEVICE_ID_ATI_SB600_HDA, };