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Diffstat (limited to 'src/southbridge/amd/sb800/usb.c')
| -rw-r--r-- | src/southbridge/amd/sb800/usb.c | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/src/southbridge/amd/sb800/usb.c b/src/southbridge/amd/sb800/usb.c new file mode 100644 index 0000000000..473ff5e199 --- /dev/null +++ b/src/southbridge/amd/sb800/usb.c @@ -0,0 +1,234 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2010 Advanced Micro Devices, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <console/console.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <device/pci_ops.h> +#include <usbdebug.h> +#include <arch/io.h> +#include "sb800.h" + +static struct pci_operations lops_pci = { + .set_subsystem = pci_dev_set_subsystem, +}; + +static void usb_init(struct device *dev) +{ + u8 byte; + u16 word; + + /* 7.1 Enable OHCI0-4 and EHCI Controllers */ + /* pmio 0xEF; */ + + /* RPR 7.2 USB S4/S5 Wake-up or PHY Power-down Support */ + byte = pm_ioread(0xF0); + byte |= 1 << 0; /* A12, USB Wake from S5 not supported on the platform */ + pm_iowrite(0xF0, byte); + + /* RPR 7.4 Enable the USB controller to get reset by any software that generate a PCIRst# condition */ + byte = pm_ioread(0xF0); + byte |= (1 << 2); + byte |= 3 << 8; /* rpr 7.5 */ + pm_iowrite(0xF0, byte); + + /* RPR 7.9 Disable OHCI MSI Capability. */ + word = pci_read_config16(dev, 0x40); + word |= (0x1 << 8); + pci_write_config16(dev, 0x40, word); +} + +static void usb_init2(struct device *dev) +{ + u32 dword; + u32 usb2_bar0; + device_t sm_dev; + + sm_dev = dev_find_slot(0, PCI_DEVFN(0x14, 0)); + //rev = get_sb800_revision(sm_dev); + + /* dword = pci_read_config32(dev, 0xf8); */ + /* dword |= 40; */ + /* pci_write_config32(dev, 0xf8, dword); */ + + usb2_bar0 = pci_read_config32(dev, 0x10) & ~0xFF; + printk(BIOS_INFO, "usb2_bar0=0x%x\n", usb2_bar0); + + /* RPR7.3 Enables the USB PHY auto calibration resister to match 45ohm resistence */ + dword = 0x00020F00; + write32(usb2_bar0 + 0xC0, dword); + + /* RPR7.8 Sets In/OUT FIFO threshold for best performance */ + dword = 0x00400040; + write32(usb2_bar0 + 0xA4, dword); + + /* RPR7.10 Disable EHCI MSI support */ + dword = pci_read_config32(dev, 0x50); + dword |= (1 << 6); + pci_write_config32(dev, 0x50, dword); + + /* RPR7.12 EHCI Async Park Mode */ + dword = pci_read_config32(dev, 0x50); + dword &= ~(0xF << 8); + dword &= ~(0xF << 12); + dword |= 1 << 8; + dword |= 2 << 12; + pci_write_config32(dev, 0x50, dword); + + /* RPR 6.12 EHCI Advance PHY Power Savings */ + /* RPR says it is just for A12. CIMM sets it when it is above A11. */ + /* But it makes the linux crash, so we skip it */ + #if 0 + dword = pci_read_config32(dev, 0x50); + dword |= 1 << 31; + pci_write_config32(dev, 0x50, dword); + #endif + + /* Each step below causes the linux crashes. Leave them here + * for future debugging. */ +#if 0 + u8 byte; + u16 word; + + + /* RPR6.17 Disable the EHCI Dynamic Power Saving feature */ + word = read32(usb2_bar0 + 0xBC); + word &= ~(1 << 12); + write16(usb2_bar0 + 0xBC, word); + + /* RPR6.19 USB Controller DMA Read Delay Tolerant. */ + if (rev >= REV_SB800_A14) { + byte = pci_read_config8(dev, 0x50); + byte |= (1 << 7); + pci_write_config8(dev, 0x50, byte); + } + + /* RPR6.20 Async Park Mode. */ + /* RPR recommends not to set these bits. */ + #if 0 + dword = pci_read_config32(dev, 0x50); + dword |= 1 << 23; + if (rev >= REV_SB800_A14) { + dword &= ~(1 << 2); + } + pci_write_config32(dev, 0x50, dword); + #endif + + /* RPR6.22 Advance Async Enhancement */ + /* RPR6.23 USB Periodic Cache Setting */ + dword = pci_read_config32(dev, 0x50); + if (rev == REV_SB800_A12) { + dword |= 1 << 28; /* 6.22 */ + dword |= 1 << 27; /* 6.23 */ + } else if (rev >= REV_SB800_A14) { + dword |= 1 << 3; + dword &= ~(1 << 28); /* 6.22 */ + dword |= 1 << 8; + dword &= ~(1 << 27); /* 6.23 */ + } + printk(BIOS_DEBUG, "rpr 6.23, final dword=%x\n", dword); +#endif +} + +static void usb_set_resources(struct device *dev) +{ +#if CONFIG_USBDEBUG + struct resource *res; + u32 base; + u32 old_debug; + + old_debug = get_ehci_debug(); + set_ehci_debug(0); +#endif + pci_dev_set_resources(dev); + +#if CONFIG_USBDEBUG + res = find_resource(dev, 0x10); + set_ehci_debug(old_debug); + if (!res) + return; + base = res->base; + set_ehci_base(base); + report_resource_stored(dev, res, ""); +#endif + +} + +static struct device_operations usb_ops = { + .read_resources = pci_dev_read_resources, + .set_resources = usb_set_resources, /* pci_dev_set_resources, */ + .enable_resources = pci_dev_enable_resources, + .init = usb_init, + .scan_bus = 0, + .ops_pci = &lops_pci, +}; + +static const struct pci_driver usb_0_driver __pci_driver = { + .ops = &usb_ops, + .vendor = PCI_VENDOR_ID_ATI, + .device = PCI_DEVICE_ID_ATI_SB800_USB_18_0, +}; +static const struct pci_driver usb_1_driver __pci_driver = { + .ops = &usb_ops, + .vendor = PCI_VENDOR_ID_ATI, + .device = PCI_DEVICE_ID_ATI_SB800_USB_18_2, +}; + +/* the pci id of usb ctrl 0 and 1 are the same. */ +/* + * static const struct pci_driver usb_3_driver __pci_driver = { + * .ops = &usb_ops, + * .vendor = PCI_VENDOR_ID_ATI, + * .device = PCI_DEVICE_ID_ATI_SB800_USB_19_0, + * }; + * static const struct pci_driver usb_4_driver __pci_driver = { + * .ops = &usb_ops, + * .vendor = PCI_VENDOR_ID_ATI, + * .device = PCI_DEVICE_ID_ATI_SB800_USB_19_1, + * }; + */ + +static const struct pci_driver usb_4_driver __pci_driver = { + .ops = &usb_ops, + .vendor = PCI_VENDOR_ID_ATI, + .device = PCI_DEVICE_ID_ATI_SB800_USB_20_5, +}; + +static struct device_operations usb_ops2 = { + .read_resources = pci_dev_read_resources, + .set_resources = usb_set_resources, /* pci_dev_set_resources, */ + .enable_resources = pci_dev_enable_resources, + .init = usb_init2, + .scan_bus = 0, + .ops_pci = &lops_pci, +}; + +static const struct pci_driver usb_5_driver __pci_driver = { + .ops = &usb_ops2, + .vendor = PCI_VENDOR_ID_ATI, + .device = PCI_DEVICE_ID_ATI_SB800_USB_18_2, +}; +/* + * static const struct pci_driver usb_5_driver __pci_driver = { + * .ops = &usb_ops2, + * .vendor = PCI_VENDOR_ID_ATI, + * .device = PCI_DEVICE_ID_ATI_SB800_USB_19_2, + * }; + */ |