diff options
Diffstat (limited to 'drivers/ata_piix.c')
| -rw-r--r-- | drivers/ata_piix.c | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/drivers/ata_piix.c b/drivers/ata_piix.c new file mode 100644 index 0000000..42456d7 --- /dev/null +++ b/drivers/ata_piix.c @@ -0,0 +1,216 @@ +/* + * Copyright (C) Procsys. All rights reserved. + * Author: Mushtaq Khan <mushtaq_k@procsys.com> + * <mushtaqk_921@yahoo.co.in> + * + * 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; either version 2 of + * the License, or (at your option) any later version. + * + * 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., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + * with the reference to ata_piix driver in kernel 2.4.32 + */ + +/* + * This file contains SATA controller and SATA drive initialization functions + */ + +#include <common.h> +#include <pci.h> +#include <command.h> +#include <config.h> +#include <asm/byteorder.h> +#include <ide.h> +#include <ata.h> + +#ifdef CFG_ATA_PIIX /*ata_piix driver */ + +#define DEBUG_SATA 0 /*For debug prints set DEBUG_SATA to 1 */ + +#define DRV_DECL /*For file specific declarations */ +#include <sata.h> +#undef DRV_DECL + +/*Macros realted to PCI*/ +#define PCI_SATA_BUS 0x00 +#define PCI_SATA_DEV 0x1f +#define PCI_SATA_FUNC 0x02 + +#define PCI_SATA_BASE1 0x10 +#define PCI_SATA_BASE2 0x14 +#define PCI_SATA_BASE3 0x18 +#define PCI_SATA_BASE4 0x1c +#define PCI_SATA_BASE5 0x20 +#define PCI_PMR 0x90 +#define PCI_PI 0x09 +#define PCI_PCS 0x92 +#define PCI_DMA_CTL 0x48 + +#define PORT_PRESENT (1<<0) +#define PORT_ENABLED (1<<4) + +u32 bdf; +u32 iobase1 = 0; /*Primary cmd block */ +u32 iobase2 = 0; /*Primary ctl block */ +u32 iobase3 = 0; /*Sec cmd block */ +u32 iobase4 = 0; /*sec ctl block */ +u32 iobase5 = 0; /*BMDMA*/ +int +pci_sata_init (void) +{ + u32 bus = PCI_SATA_BUS; + u32 dev = PCI_SATA_DEV; + u32 fun = PCI_SATA_FUNC; + u16 cmd = 0; + u8 lat = 0, pcibios_max_latency = 0xff; + u8 pmr; /*Port mapping reg */ + u8 pi; /*Prgming Interface reg */ + + bdf = PCI_BDF (bus, dev, fun); + pci_read_config_dword (bdf, PCI_SATA_BASE1, &iobase1); + pci_read_config_dword (bdf, PCI_SATA_BASE2, &iobase2); + pci_read_config_dword (bdf, PCI_SATA_BASE3, &iobase3); + pci_read_config_dword (bdf, PCI_SATA_BASE4, &iobase4); + pci_read_config_dword (bdf, PCI_SATA_BASE5, &iobase5); + + if ((iobase1 == 0xFFFFFFFF) || (iobase2 == 0xFFFFFFFF) || + (iobase3 == 0xFFFFFFFF) || (iobase4 == 0xFFFFFFFF) || + (iobase5 == 0xFFFFFFFF)) { + printf ("error no base addr for SATA controller\n"); + return 1; + /*ERROR*/} + + iobase1 &= 0xFFFFFFFE; + iobase2 &= 0xFFFFFFFE; + iobase3 &= 0xFFFFFFFE; + iobase4 &= 0xFFFFFFFE; + iobase5 &= 0xFFFFFFFE; + + /*check for mode */ + pci_read_config_byte (bdf, PCI_PMR, &pmr); + if (pmr > 1) { + printf ("combined mode not supported\n"); + return 1; + } + + pci_read_config_byte (bdf, PCI_PI, &pi); + if ((pi & 0x05) != 0x05) { + printf ("Sata is in Legacy mode\n"); + return 1; + } else { + printf ("sata is in Native mode\n"); + } + + /*MASTER CFG AND IO CFG */ + pci_read_config_word (bdf, PCI_COMMAND, &cmd); + cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_IO; + pci_write_config_word (bdf, PCI_COMMAND, cmd); + pci_read_config_byte (dev, PCI_LATENCY_TIMER, &lat); + + if (lat < 16) + lat = (64 <= pcibios_max_latency) ? 64 : pcibios_max_latency; + else if (lat > pcibios_max_latency) + lat = pcibios_max_latency; + pci_write_config_byte (dev, PCI_LATENCY_TIMER, lat); + + return 0; +} + +int +sata_bus_probe (int port_no) +{ + int orig_mask, mask; + u16 pcs; + + mask = (PORT_PRESENT << port_no); + pci_read_config_word (bdf, PCI_PCS, &pcs); + orig_mask = (int) pcs & 0xff; + if ((orig_mask & mask) != mask) + return 0; + else + return 1; +} + +int +init_sata (void) +{ + u8 i, rv = 0; + + for (i = 0; i < CFG_SATA_MAXDEVICES; i++) { + sata_dev_desc[i].type = DEV_TYPE_UNKNOWN; + sata_dev_desc[i].if_type = IF_TYPE_IDE; + sata_dev_desc[i].dev = i; + sata_dev_desc[i].part_type = PART_TYPE_UNKNOWN; + sata_dev_desc[i].blksz = 0; + sata_dev_desc[i].lba = 0; + sata_dev_desc[i].block_read = sata_read; + } + + rv = pci_sata_init (); + if (rv == 1) { + printf ("pci initialization failed\n"); + return 1; + } + + port[0].port_no = 0; + port[0].ioaddr.cmd_addr = iobase1; + port[0].ioaddr.altstatus_addr = port[0].ioaddr.ctl_addr = + iobase2 | ATA_PCI_CTL_OFS; + port[0].ioaddr.bmdma_addr = iobase5; + + port[1].port_no = 1; + port[1].ioaddr.cmd_addr = iobase3; + port[1].ioaddr.altstatus_addr = port[1].ioaddr.ctl_addr = + iobase4 | ATA_PCI_CTL_OFS; + port[1].ioaddr.bmdma_addr = iobase5 + 0x8; + + for (i = 0; i < CFG_SATA_MAXBUS; i++) + sata_port (&port[i].ioaddr); + + for (i = 0; i < CFG_SATA_MAXBUS; i++) { + if (!(sata_bus_probe (i))) { + port[i].port_state = 0; + printf ("SATA#%d port is not present \n", i); + } else { + printf ("SATA#%d port is present\n", i); + if (sata_bus_softreset (i)) { + port[i].port_state = 0; + } else { + port[i].port_state = 1; + } + } + } + + for (i = 0; i < CFG_SATA_MAXBUS; i++) { + u8 j, devno; + + if (port[i].port_state == 0) + continue; + for (j = 0; j < CFG_SATA_DEVS_PER_BUS; j++) { + sata_identify (i, j); + set_Feature_cmd (i, j); + devno = i * CFG_SATA_DEVS_PER_BUS + j; + if ((sata_dev_desc[devno].lba > 0) && + (sata_dev_desc[devno].blksz > 0)) { + dev_print (&sata_dev_desc[devno]); + /* initialize partition type */ + init_part (&sata_dev_desc[devno]); + if (curr_dev < 0) + curr_dev = + i * CFG_SATA_DEVS_PER_BUS + j; + } + } + } + return 0; +} +#endif |