/* SPDX-License-Identifier: GPL-2.0-only */ #include #include #include #include #include #include #include #include #include #include "chip.h" #include "pch.h" typedef struct southbridge_intel_bd82x6x_config config_t; static inline u32 sir_read(struct device *dev, int idx) { pci_write_config32(dev, SATA_SIRI, idx); return pci_read_config32(dev, SATA_SIRD); } static inline void sir_write(struct device *dev, int idx, u32 value) { pci_write_config32(dev, SATA_SIRI, idx); pci_write_config32(dev, SATA_SIRD, value); } static void sata_read_resources(struct device *dev) { struct resource *res; pci_dev_read_resources(dev); /* Assign fixed resources for IDE legacy mode */ u8 sata_mode = get_uint_option("sata_mode", 0); if (sata_mode != 2) return; res = probe_resource(dev, PCI_BASE_ADDRESS_0); if (res) { res->base = 0x1f0; res->size = 8; res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; } res = probe_resource(dev, PCI_BASE_ADDRESS_1); if (res) { res->base = 0x3f4; res->size = 4; res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; } res = probe_resource(dev, PCI_BASE_ADDRESS_2); if (res) { res->base = 0x170; res->size = 8; res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; } res = probe_resource(dev, PCI_BASE_ADDRESS_3); if (res) { res->base = 0x374; res->size = 4; res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; } } static void sata_set_resources(struct device *dev) { /* work around bug in pci_dev_set_resources(), it bails out on FIXED */ u8 sata_mode = get_uint_option("sata_mode", 0); if (sata_mode == 2) { unsigned int i; for (i = PCI_BASE_ADDRESS_0; i <= PCI_BASE_ADDRESS_3; i += 4) { struct resource *const res = probe_resource(dev, i); if (res) res->flags &= ~IORESOURCE_FIXED; } } pci_dev_set_resources(dev); } static void sata_init(struct device *dev) { u32 reg32; u16 reg16; /* Get the chip configuration */ config_t *config = dev->chip_info; printk(BIOS_DEBUG, "SATA: Initializing...\n"); if (config == NULL) { printk(BIOS_ERR, "SATA: ERROR: Device not in devicetree.cb!\n"); return; } /* Default to AHCI */ u8 sata_mode = get_uint_option("sata_mode", 0); /* SATA configuration */ /* Enable BARs */ pci_write_config16(dev, PCI_COMMAND, PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO); /* AHCI */ if (sata_mode == 0) { u8 *abar; printk(BIOS_DEBUG, "SATA: Controller in AHCI mode.\n"); pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE); pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE); /* for AHCI, Port Enable is managed in memory mapped space */ reg16 = pci_read_config16(dev, 0x92); reg16 &= ~0x3f; /* 6 ports SKU + ORM */ reg16 |= 0x8000 | config->sata_port_map; pci_write_config16(dev, 0x92, reg16); /* SATA Initialization register */ pci_write_config32(dev, 0x94, ((config->sata_port_map ^ 0x3f) << 24) | 0x183); /* Initialize AHCI memory-mapped space */ abar = (u8 *)(uintptr_t)pci_read_config32(dev, PCI_BASE_ADDRESS_5); printk(BIOS_DEBUG, "ABAR: %p\n", abar); /* CAP (HBA Capabilities) : enable power management */ reg32 = read32(abar + 0x00); reg32 |= 0x0c006000; // set PSC+SSC+SALP+SSS reg32 &= ~0x00020060; // clear SXS+EMS+PMS /* Set ISS, if available */ if (config->sata_interface_speed_support) { reg32 &= ~0x00f00000; reg32 |= (config->sata_interface_speed_support & 0x03) << 20; } write32(abar + 0x00, reg32); /* PI (Ports implemented) */ write32(abar + 0x0c, config->sata_port_map); (void)read32(abar + 0x0c); /* Read back 1 */ (void)read32(abar + 0x0c); /* Read back 2 */ /* CAP2 (HBA Capabilities Extended)*/ reg32 = read32(abar + 0x24); reg32 &= ~0x00000002; write32(abar + 0x24, reg32); /* VSP (Vendor Specific Register */ reg32 = read32(abar + 0xa0); reg32 &= ~0x00000005; write32(abar + 0xa0, reg32); } else { /* IDE */ /* Without AHCI BAR no memory decoding */ pci_and_config16(dev, PCI_COMMAND, ~PCI_COMMAND_MEMORY); if (sata_mode == 1) { /* Native mode on both primary and secondary. */ pci_or_config8(dev, 0x09, 0x05); printk(BIOS_DEBUG, "SATA: Controller in IDE compat mode.\n"); } else { /* Legacy mode on both primary and secondary. */ pci_and_config8(dev, 0x09, ~0x05); printk(BIOS_DEBUG, "SATA: Controller in IDE legacy mode.\n"); } /* Enable I/O decoding */ pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE); pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE); /* Port enable + OOB retry mode */ pci_update_config16(dev, 0x92, ~0x3f, config->sata_port_map | 0x8000); /* SATA Initialization register */ pci_write_config32(dev, 0x94, ((config->sata_port_map ^ 0x3f) << 24) | 0x183); } /* Set Gen3 Transmitter settings if needed */ if (config->sata_port0_gen3_tx) pch_iobp_update(SATA_IOBP_SP0G3IR, 0, config->sata_port0_gen3_tx); if (config->sata_port1_gen3_tx) pch_iobp_update(SATA_IOBP_SP1G3IR, 0, config->sata_port1_gen3_tx); /* Additional Programming Requirements */ sir_write(dev, 0x04, 0x00001600); sir_write(dev, 0x28, 0xa0000033); reg32 = sir_read(dev, 0x54); reg32 &= 0xff000000; reg32 |= 0x5555aa; sir_write(dev, 0x54, reg32); sir_write(dev, 0x64, 0xcccc8484); reg32 = sir_read(dev, 0x68); reg32 &= 0xffff0000; reg32 |= 0xcccc; sir_write(dev, 0x68, reg32); reg32 = sir_read(dev, 0x78); reg32 &= 0x0000ffff; reg32 |= 0x88880000; sir_write(dev, 0x78, reg32); sir_write(dev, 0x84, 0x001c7000); sir_write(dev, 0x88, 0x88338822); sir_write(dev, 0xa0, 0x001c7000); // a4 sir_write(dev, 0xc4, 0x0c0c0c0c); sir_write(dev, 0xc8, 0x0c0c0c0c); sir_write(dev, 0xd4, 0x10000000); pch_iobp_update(0xea004001, 0x3fffffff, 0xc0000000); pch_iobp_update(0xea00408a, 0xfffffcff, 0x00000100); pci_update_config32(dev, 0x98, ~(1 << 16 | 0x3f << 7 | 3 << 5 | 3 << 3), 1 << 24 | 1 << 22 | 1 << 20 | 1 << 19 | 1 << 18 | 1 << 14 | 0x04 << 7 | 1 << 3); } static void sata_enable(struct device *dev) { /* Get the chip configuration */ config_t *config = dev->chip_info; u16 map = 0; if (!config) return; u8 sata_mode = get_uint_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 = 0x0060; map |= (config->sata_port_map ^ 0x3f) << 8; pci_write_config16(dev, 0x90, map); } static const char *sata_acpi_name(const struct device *dev) { return "SATA"; } static void sata_fill_ssdt(const struct device *dev) { config_t *config = dev->chip_info; generate_sata_ssdt_ports("\\_SB_.PCI0.SATA", config->sata_port_map); } static struct device_operations sata_ops = { .read_resources = sata_read_resources, .set_resources = sata_set_resources, .enable_resources = pci_dev_enable_resources, .acpi_fill_ssdt = sata_fill_ssdt, .init = sata_init, .enable = sata_enable, .ops_pci = &pci_dev_ops_pci, .acpi_name = sata_acpi_name, }; static const unsigned short pci_device_ids[] = { 0x1c00, 0x1c01, 0x1c02, 0x1c03, 0x1e00, 0x1e01, 0x1e02, 0x1e03, 0 }; static const struct pci_driver pch_sata __pci_driver = { .ops = &sata_ops, .vendor = PCI_VID_INTEL, .devices = pci_device_ids, };