/* SPDX-License-Identifier: GPL-2.0-or-later */ /* TODO: Check if this really works for all of the southbridges. */ #include <stdint.h> #include <console/console.h> #include <device/device.h> #include <device/pci.h> #include <device/pci_ops.h> #include <device/pci_ids.h> #include "chip.h" #include "i82371eb.h" /** * Initialize the IDE controller. * * Depending on the configuration variables 'ide0_enable' and 'ide1_enable' * enable or disable the primary and secondary IDE interface, respectively. * * Depending on the configuration variable 'ide_legacy_enable' enable or * disable access to the legacy IDE ports and the PCI Bus Master IDE I/O * registers (this is required for e.g. FILO). * * @param dev The device to use. */ static void ide_init_enable(struct device *dev) { u16 reg16; struct southbridge_intel_i82371eb_config *conf = dev->chip_info; /* Enable/disable the primary IDE interface. */ reg16 = pci_read_config16(dev, IDETIM_PRI); reg16 = ONOFF(conf->ide0_enable, reg16, IDE_DECODE_ENABLE); pci_write_config16(dev, IDETIM_PRI, reg16); printk(BIOS_DEBUG, "IDE: %s: %s\n", "Primary interface", conf->ide0_enable ? "on" : "off"); /* Enable/disable the secondary IDE interface. */ reg16 = pci_read_config16(dev, IDETIM_SEC); reg16 = ONOFF(conf->ide1_enable, reg16, IDE_DECODE_ENABLE); pci_write_config16(dev, IDETIM_SEC, reg16); printk(BIOS_DEBUG, "IDE: %s: %s\n", "Secondary interface", conf->ide1_enable ? "on" : "off"); /* Enable access to the legacy IDE ports (both primary and secondary), * and the PCI Bus Master IDE I/O registers. * Only do this if at least one IDE interface is enabled. */ if (conf->ide0_enable || conf->ide1_enable) { reg16 = pci_read_config16(dev, PCI_COMMAND); reg16 = ONOFF(conf->ide_legacy_enable, reg16, (PCI_COMMAND_IO | PCI_COMMAND_MASTER)); pci_write_config16(dev, PCI_COMMAND, reg16); printk(BIOS_DEBUG, "IDE: Access to legacy IDE ports: %s\n", conf->ide_legacy_enable ? "on" : "off"); } } /** * Initialize the Ultra DMA/33 support of the IDE controller. * * Depending on the configuration variables 'ide0_drive0_udma33_enable', * 'ide0_drive1_udma33_enable', 'ide1_drive0_udma33_enable', and * 'ide1_drive1_udma33_enable' enable or disable Ultra DMA/33 support for * the respective IDE controller and drive. * * Only do that if the respective controller is actually enabled, of course. * * @param dev The device to use. */ static void ide_init_udma33(struct device *dev) { u8 reg8; struct southbridge_intel_i82371eb_config *conf = dev->chip_info; /* Enable/disable UDMA/33 operation (primary IDE interface). */ if (conf->ide0_enable) { reg8 = pci_read_config8(dev, UDMACTL); reg8 = ONOFF(conf->ide0_drive0_udma33_enable, reg8, PSDE0); reg8 = ONOFF(conf->ide0_drive1_udma33_enable, reg8, PSDE1); pci_write_config8(dev, UDMACTL, reg8); printk(BIOS_DEBUG, "IDE: %s, drive %d: UDMA/33: %s\n", "Primary interface", 0, conf->ide0_drive0_udma33_enable ? "on" : "off"); printk(BIOS_DEBUG, "IDE: %s, drive %d: UDMA/33: %s\n", "Primary interface", 1, conf->ide0_drive1_udma33_enable ? "on" : "off"); } /* Enable/disable Ultra DMA/33 operation (secondary IDE interface). */ if (conf->ide1_enable) { reg8 = pci_read_config8(dev, UDMACTL); reg8 = ONOFF(conf->ide1_drive0_udma33_enable, reg8, SSDE0); reg8 = ONOFF(conf->ide1_drive1_udma33_enable, reg8, SSDE1); pci_write_config8(dev, UDMACTL, reg8); printk(BIOS_DEBUG, "IDE: %s, drive %d: UDMA/33: %s\n", "Secondary interface", 0, conf->ide1_drive0_udma33_enable ? "on" : "off"); printk(BIOS_DEBUG, "IDE: %s, drive %d: UDMA/33: %s\n", "Secondary interface", 1, conf->ide1_drive1_udma33_enable ? "on" : "off"); } } /** * IDE init for the Intel 82371FB/SB IDE controller. * * These devices do not support UDMA/33, so don't attempt to enable it. * * @param dev The device to use. */ static void ide_init_i82371fb_sb(struct device *dev) { ide_init_enable(dev); } /** * IDE init for the Intel 82371AB/EB/MB IDE controller. * * @param dev The device to use. */ static void ide_init_i82371ab_eb_mb(struct device *dev) { ide_init_enable(dev); ide_init_udma33(dev); } /* Intel 82371FB/SB */ static const struct device_operations ide_ops_fb_sb = { .read_resources = pci_dev_read_resources, .set_resources = pci_dev_set_resources, .enable_resources = pci_dev_enable_resources, .init = ide_init_i82371fb_sb, .ops_pci = 0, /* No subsystem IDs on 82371XX! */ }; /* Intel 82371AB/EB/MB */ static const struct device_operations ide_ops_ab_eb_mb = { .read_resources = pci_dev_read_resources, .set_resources = pci_dev_set_resources, .enable_resources = pci_dev_enable_resources, .init = ide_init_i82371ab_eb_mb, .ops_pci = 0, /* No subsystem IDs on 82371XX! */ }; /* Intel 82371FB (PIIX) */ static const struct pci_driver ide_driver_fb __pci_driver = { .ops = &ide_ops_fb_sb, .vendor = PCI_VID_INTEL, .device = PCI_DID_INTEL_82371FB_IDE, }; /* Intel 82371SB (PIIX3) */ static const struct pci_driver ide_driver_sb __pci_driver = { .ops = &ide_ops_fb_sb, .vendor = PCI_VID_INTEL, .device = PCI_DID_INTEL_82371SB_IDE, }; /* Intel 82371MX (MPIIX) */ static const struct pci_driver ide_driver_mx __pci_driver = { .ops = &ide_ops_fb_sb, .vendor = PCI_VID_INTEL, .device = PCI_DID_INTEL_82371MX_ISA_IDE, }; /* Intel 82437MX (part of the 430MX chipset) */ static const struct pci_driver ide_driver_82437mx __pci_driver = { .ops = &ide_ops_fb_sb, .vendor = PCI_VID_INTEL, .device = PCI_DID_INTEL_82437MX_ISA_IDE, }; /* Intel 82371AB/EB/MB */ static const struct pci_driver ide_driver_ab_eb_mb __pci_driver = { .ops = &ide_ops_ab_eb_mb, .vendor = PCI_VID_INTEL, .device = PCI_DID_INTEL_82371AB_IDE, };