/* SPDX-License-Identifier: GPL-2.0-only */ #include #include #include #include #include #include #include #include #include #include "chip.h" #include "i82801jx.h" typedef struct southbridge_intel_i82801jx_config config_t; static void sata_enable_ahci_mmap(struct device *const dev, const u8 port_map) { int i; u32 reg32; struct resource *res; /* Initialize AHCI memory-mapped space */ res = probe_resource(dev, PCI_BASE_ADDRESS_5); if (!res) return; u8 *abar = res2mmio(res, 0, 0); printk(BIOS_DEBUG, "ABAR: %p\n", abar); /* Set AHCI access mode. No other ABAR registers should be accessed before this. */ reg32 = read32(abar + 0x04); reg32 |= 1 << 31; write32(abar + 0x04, reg32); /* CAP (HBA Capabilities) : enable power management */ reg32 = read32(abar + 0x00); /* CCCS must be set. */ reg32 |= 0x0c006080; /* set CCCS+PSC+SSC+SALP+SSS */ reg32 &= ~0x00020060; /* clear SXS+EMS+PMS */ write32(abar + 0x00, reg32); /* PI (Ports implemented) */ write32(abar + 0x0c, port_map); /* PCH code reads back twice, do we need it, too? */ (void) read32(abar + 0x0c); /* Read back 1 */ (void) read32(abar + 0x0c); /* Read back 2 */ /* VSP (Vendor Specific Register) */ reg32 = read32(abar + 0xa0); reg32 &= ~0x00000001; /* clear SLPD */ write32(abar + 0xa0, reg32); /* Lock R/WO bits in Port command registers. */ for (i = 0; i < 6; ++i) { u8 *addr = abar + 0x118 + (i * 0x80); write32(addr, read32(addr)); } } static void sata_program_indexed(struct device *const dev) { u32 reg32; pci_write_config8(dev, D31F2_SIDX, 0x18); reg32 = pci_read_config32(dev, D31F2_SDAT); reg32 &= ~((7 << 6) | (7 << 3) | (7 << 0)); reg32 |= (3 << 3) | (3 << 0); pci_write_config32(dev, D31F2_SDAT, reg32); pci_write_config8(dev, D31F2_SIDX, 0x28); pci_write_config32(dev, D31F2_SDAT, 0x00cc2080); pci_write_config8(dev, D31F2_SIDX, 0x40); pci_write_config8(dev, D31F2_SDAT + 2, 0x22); pci_write_config8(dev, D31F2_SIDX, 0x78); pci_write_config8(dev, D31F2_SDAT + 2, 0x22); pci_write_config8(dev, D31F2_SIDX, 0x84); reg32 = pci_read_config32(dev, D31F2_SDAT); reg32 &= ~((7 << 3) | (7 << 0)); reg32 |= (3 << 3) | (3 << 0); pci_write_config32(dev, D31F2_SDAT, reg32); pci_write_config8(dev, D31F2_SIDX, 0x88); reg32 = pci_read_config32(dev, D31F2_SDAT); reg32 &= ~((7 << 27) | (7 << 24) | (7 << 11) | (7 << 8)); reg32 &= ~((7 << 19) | (7 << 16) | (7 << 3) | (7 << 0)); reg32 |= (4 << 27) | (4 << 24) | (2 << 11) | (2 << 8); reg32 |= (4 << 19) | (4 << 16) | (2 << 3) | (2 << 0); pci_write_config32(dev, D31F2_SDAT, reg32); pci_write_config8(dev, D31F2_SIDX, 0x8c); reg32 = pci_read_config32(dev, D31F2_SDAT); reg32 &= ~((7 << 27) | (7 << 24)); reg32 &= ~((7 << 19) | (7 << 16) | 0xffff); reg32 |= (2 << 27) | (2 << 24); reg32 |= (2 << 19) | (2 << 16) | 0x00aa; pci_write_config32(dev, D31F2_SDAT, reg32); pci_write_config8(dev, D31F2_SIDX, 0x94); pci_write_config32(dev, D31F2_SDAT, 0x00000022); pci_write_config8(dev, D31F2_SIDX, 0xa0); reg32 = pci_read_config32(dev, D31F2_SDAT); reg32 &= ~((7 << 3) | (7 << 0)); reg32 |= (3 << 3) | (3 << 0); pci_write_config32(dev, D31F2_SDAT, reg32); pci_write_config8(dev, D31F2_SIDX, 0xa8); reg32 = pci_read_config32(dev, D31F2_SDAT); reg32 &= ~((7 << 19) | (7 << 16) | (7 << 3) | (7 << 0)); reg32 |= (4 << 19) | (4 << 16) | (2 << 3) | (2 << 0); pci_write_config32(dev, D31F2_SDAT, reg32); pci_write_config8(dev, D31F2_SIDX, 0xac); reg32 = pci_read_config32(dev, D31F2_SDAT); reg32 &= ~((7 << 19) | (7 << 16) | 0xffff); reg32 |= (2 << 19) | (2 << 16) | 0x000a; pci_write_config32(dev, D31F2_SDAT, reg32); } static void sata_init(struct device *const dev) { u16 reg16; /* Get the chip configuration */ const config_t *const config = dev->chip_info; printk(BIOS_DEBUG, "i82801jx_sata: initializing...\n"); if (config == NULL) { printk(BIOS_ERR, "i82801jx_sata: error: " "device not in devicetree.cb!\n"); return; } /* Default to AHCI */ u8 sata_mode = get_int_option("sata_mode", 0); /* * TODO: In contrast to ICH7 and PCH code we don't set * timings, dma and IDE-I/O settings here. Looks like they * became obsolete with the fading of real IDE ports. * Maybe we can safely remove those settings from PCH code and * even ICH7 code if it doesn't use the feature to combine the * IDE and SATA controllers. */ pci_write_config16(dev, PCI_COMMAND, PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | /* read-only in IDE modes */ PCI_COMMAND_IO); if (sata_mode != 0) /* No AHCI: clear AHCI base */ pci_write_config32(dev, PCI_BASE_ADDRESS_5, 0x00000000); if (sata_mode == 0) { printk(BIOS_DEBUG, "SATA controller in AHCI mode.\n"); } else { printk(BIOS_DEBUG, "SATA controller in native mode.\n"); /* Enable native mode on both primary and secondary. */ pci_write_config8(dev, PCI_CLASS_PROG, 0x8f); } /* Looks like we should only enable decoding here. */ pci_write_config16(dev, D31F2_IDE_TIM_PRI, (1 << 15)); pci_write_config16(dev, D31F2_IDE_TIM_SEC, (1 << 15)); /* Port enable. For AHCI, it's managed in memory mapped space. */ reg16 = pci_read_config16(dev, 0x92); reg16 &= ~0x3f; reg16 |= (1 << 15) | ((sata_mode == 0) ? 0x3f : config->sata_port_map); pci_write_config16(dev, 0x92, reg16); /* SATA clock settings */ u32 sclkcg = 0; if (config->sata_clock_request && !(inb(DEFAULT_GPIOBASE + 0x30) & (1 << (35 - 32)))) sclkcg |= 1 << 30; /* Enable SATA clock request. */ /* Disable unused ports. */ sclkcg |= ((~config->sata_port_map) & 0x3f) << 24; /* Must be programmed. */ sclkcg |= 0x193; pci_write_config32(dev, 0x94, sclkcg); if (sata_mode == 0) sata_enable_ahci_mmap(dev, config->sata_port_map); sata_program_indexed(dev); } static void sata_enable(struct device *dev) { /* Get the chip configuration */ const config_t *const config = dev->chip_info; u16 map = 0; if (!config) return; /* Default to AHCI */ u8 sata_mode = get_int_option("sata_mode", 0); /* * Set SATA controller mode early so the resource allocator can * properly assign IO/Memory resources for the controller. */ if (sata_mode == 0) map = 0x0040 | 0x0020; /* SATA mode + all ports on D31:F2 */ map |= (config->sata_port_map ^ 0x3f) << 8; pci_write_config16(dev, 0x90, map); } static struct device_operations sata_ops = { .read_resources = pci_dev_read_resources, .set_resources = pci_dev_set_resources, .enable_resources = pci_dev_enable_resources, .init = sata_init, .enable = sata_enable, .ops_pci = &pci_dev_ops_pci, }; static const unsigned short pci_device_ids[] = { 0x3a00, 0x3a02, 0x3a05, 0x3a06, 0x3a20, 0x3a22, 0x3a25, 0x3a26, 0, }; static const struct pci_driver pch_sata __pci_driver = { .ops = &sata_ops, .vendor = PCI_VENDOR_ID_INTEL, .devices = pci_device_ids, };