/* SPDX-License-Identifier: GPL-2.0-only */ #include #include #include #include #include #include #include #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, }; 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, }; /* 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) */ static const struct pci_driver i82801db_ac97_audio __pci_driver = { .ops = &ac97_audio_ops, .vendor = PCI_VID_INTEL, .device = PCI_DID_INTEL_82801DB_AC97_AUDIO, }; static const struct pci_driver i82801db_ac97_modem __pci_driver = { .ops = &ac97_modem_ops, .vendor = PCI_VID_INTEL, .device = PCI_DID_INTEL_82801DB_AC97_MODEM, };