| /* 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 IDE interface: %s\n", "Primary", |
| 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 IDE interface: %s\n", "Secondary", |
| 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 IDE interface", 0, |
| conf->ide0_drive0_udma33_enable ? "on" : "off"); |
| printk(BIOS_DEBUG, "IDE: %s, drive %d: UDMA/33: %s\n", |
| "Primary IDE 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 IDE interface", 0, |
| conf->ide1_drive0_udma33_enable ? "on" : "off"); |
| printk(BIOS_DEBUG, "IDE: %s, drive %d: UDMA/33: %s\n", |
| "Secondary IDE 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_VENDOR_ID_INTEL, |
| .device = PCI_DEVICE_ID_INTEL_82371FB_IDE, |
| }; |
| |
| /* Intel 82371SB (PIIX3) */ |
| static const struct pci_driver ide_driver_sb __pci_driver = { |
| .ops = &ide_ops_fb_sb, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = PCI_DEVICE_ID_INTEL_82371SB_IDE, |
| }; |
| |
| /* Intel 82371MX (MPIIX) */ |
| static const struct pci_driver ide_driver_mx __pci_driver = { |
| .ops = &ide_ops_fb_sb, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = PCI_DEVICE_ID_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_VENDOR_ID_INTEL, |
| .device = PCI_DEVICE_ID_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_VENDOR_ID_INTEL, |
| .device = PCI_DEVICE_ID_INTEL_82371AB_IDE, |
| }; |