| /* |
| * This file is part of the coreboot project. |
| * |
| * |
| * 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. |
| */ |
| |
| #include <console/console.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <arch/io.h> |
| #include <device/pci_ops.h> |
| #include <delay.h> |
| #include "i82801dx.h" |
| |
| #define NAMBAR 0x10 |
| #define MASTER_VOL 0x02 |
| #define PAGING 0x24 |
| #define EXT_AUDIO 0x28 |
| #define FUNC_SEL 0x66 |
| #define INFO_IO 0x68 |
| #define CONNECTOR 0x6a |
| #define VENDOR_ID1 0x7c |
| #define VENDOR_ID2 0x7e |
| #define SEC_VENDOR_ID1 0xfc |
| #define SEC_VENDOR_ID2 0xfe |
| |
| #define NABMBAR 0x14 |
| #define GLOB_CNT 0x2c |
| #define GLOB_STA 0x30 |
| #define CAS 0x34 |
| |
| #define MMBAR 0x10 |
| #define EXT_MODEM_ID1 0x3c |
| #define EXT_MODEM_ID2 0xbc |
| |
| #define MBAR 0x14 |
| #define SEC_CODEC 0x40 |
| |
| |
| /* FIXME. This table is probably mainboard specific */ |
| static u16 ac97_function[16*2][4] = { |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) }, |
| { (1 << 5), (2 << 11), (1 << 10), (3 << 13) } |
| }; |
| |
| static u16 nabmbar; |
| static u16 nambar; |
| |
| static int ac97_semaphore(void) |
| { |
| int timeout; |
| u8 reg8; |
| |
| timeout = 0xffff; |
| do { |
| reg8 = inb(nabmbar + CAS); |
| timeout--; |
| } while ((reg8 & 1) && timeout); |
| if (! timeout) { |
| printk(BIOS_DEBUG, "Timeout!\n"); |
| } |
| |
| return (!timeout); |
| } |
| |
| static void init_cnr(void) |
| { |
| // TODO |
| } |
| |
| static void program_sigid(struct device *dev, u32 id) |
| { |
| pci_write_config32(dev, 0x2c, id); |
| } |
| |
| static void ac97_audio_init(struct device *dev) |
| { |
| u16 reg16; |
| u32 reg32; |
| int i; |
| |
| printk(BIOS_DEBUG, "Initializing AC'97 Audio.\n"); |
| |
| /* top 16 bits are zero, so don't read them */ |
| nabmbar = pci_read_config16(dev, NABMBAR) & 0xfffe; |
| nambar = pci_read_config16(dev, NAMBAR) & 0xfffe; |
| |
| reg16 = inw(nabmbar + GLOB_CNT); |
| reg16 |= (1 << 1); /* Remove AC_RESET# */ |
| outw(reg16, nabmbar + GLOB_CNT); |
| |
| /* Wait 600ms. Ouch. */ |
| udelay(600 * 1000); |
| |
| init_cnr(); |
| |
| /* Detect Primary AC'97 Codec */ |
| reg32 = inl(nabmbar + GLOB_STA); |
| if ((reg32 & ((1 << 28) | (1 << 9) | (1 << 8))) == 0) { |
| /* Primary Codec not found */ |
| printk(BIOS_DEBUG, "No primary codec. Disabling AC'97 Audio.\n"); |
| return; |
| } |
| |
| ac97_semaphore(); |
| |
| /* Detect if codec is programmable */ |
| outw(0x8000, nambar + MASTER_VOL); |
| ac97_semaphore(); |
| if (inw(nambar + MASTER_VOL) != 0x8000) { |
| printk(BIOS_DEBUG, "Codec not programmable. Disabling AC'97 Audio.\n"); |
| return; |
| } |
| |
| /* Program Vendor IDs */ |
| reg32 = inw(nambar + VENDOR_ID1); |
| reg32 <<= 16; |
| reg32 |= (u16)inw(nambar + VENDOR_ID2); |
| |
| program_sigid(dev, reg32); |
| |
| /* Is Codec AC'97 2.3 compliant? */ |
| reg16 = inw(nambar + EXT_AUDIO); |
| /* [11:10] = 10b -> AC'97 2.3 */ |
| if ((reg16 & 0x0c00) != 0x0800) { |
| /* No 2.3 Codec. We're done */ |
| return; |
| } |
| |
| /* Select Page 1 */ |
| reg16 = inw(nambar + PAGING); |
| reg16 &= 0xfff0; |
| reg16 |= 0x0001; |
| outw(reg16, nambar + PAGING); |
| |
| for (i = 0x0a * 2; i > 0; i--) { |
| outw(i, nambar + FUNC_SEL); |
| |
| /* Function could not be selected. Next one */ |
| if (inw(nambar + FUNC_SEL) != i) |
| continue; |
| |
| reg16 = inw(nambar + INFO_IO); |
| |
| /* Function Information present? */ |
| if (!(reg16 & (1 << 0))) |
| continue; |
| |
| /* Function Information valid? */ |
| if (!(reg16 & (1 << 4))) |
| continue; |
| |
| /* Program Buffer Delay [9:5] */ |
| reg16 &= 0x03e0; |
| reg16 |= ac97_function[i][0]; |
| |
| /* Program Gain [15:11] */ |
| reg16 |= ac97_function[i][1]; |
| |
| /* Program Inversion [10] */ |
| reg16 |= ac97_function[i][2]; |
| |
| outw(reg16, nambar + INFO_IO); |
| |
| /* Program Connector / Jack Location */ |
| reg16 = inw(nambar + CONNECTOR); |
| reg16 &= 0x1fff; |
| reg16 |= ac97_function[i][3]; |
| outw(reg16, nambar + CONNECTOR); |
| } |
| } |
| |
| static void ac97_modem_init(struct device *dev) |
| { |
| u16 reg16; |
| u32 reg32; |
| u16 mmbar, mbar; |
| |
| mmbar = pci_read_config16(dev, MMBAR) & 0xfffe; |
| mbar = pci_read_config16(dev, MBAR) & 0xfffe; |
| |
| reg16 = inw(mmbar + EXT_MODEM_ID1); |
| if ((reg16 & 0xc000) != 0xc000) { |
| if (reg16 & (1 << 0)) { |
| reg32 = inw(mmbar + VENDOR_ID2); |
| reg32 <<= 16; |
| reg32 |= (u16)inw(mmbar + VENDOR_ID1); |
| program_sigid(dev, reg32); |
| return; |
| } |
| } |
| |
| /* Secondary codec? */ |
| reg16 = inw(mbar + SEC_CODEC); |
| if ((reg16 & (1 << 9)) == 0) |
| return; |
| |
| reg16 = inw(mmbar + EXT_MODEM_ID2); |
| if ((reg16 & 0xc000) == 0x4000) { |
| if (reg16 & (1 << 0)) { |
| reg32 = inw(mmbar + SEC_VENDOR_ID2); |
| reg32 <<= 16; |
| reg32 |= (u16)inw(mmbar + SEC_VENDOR_ID1); |
| program_sigid(dev, reg32); |
| return; |
| } |
| } |
| } |
| |
| static struct device_operations ac97_audio_ops = { |
| .read_resources = pci_dev_read_resources, |
| .set_resources = pci_dev_set_resources, |
| .enable_resources = pci_dev_enable_resources, |
| .enable = i82801dx_enable, |
| .init = ac97_audio_init, |
| .scan_bus = 0, |
| }; |
| |
| static struct device_operations ac97_modem_ops = { |
| .read_resources = pci_dev_read_resources, |
| .set_resources = pci_dev_set_resources, |
| .enable_resources = pci_dev_enable_resources, |
| .enable = i82801dx_enable, |
| .init = ac97_modem_init, |
| .scan_bus = 0, |
| }; |
| |
| /* 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) */ |
| static const struct pci_driver i82801db_ac97_audio __pci_driver = { |
| .ops = &ac97_audio_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = PCI_DEVICE_ID_INTEL_82801DB_AC97_AUDIO, |
| }; |
| |
| static const struct pci_driver i82801db_ac97_modem __pci_driver = { |
| .ops = &ac97_modem_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = PCI_DEVICE_ID_INTEL_82801DB_AC97_MODEM, |
| }; |