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authormushtaq khan <mushtaq_k@procsys.com>2007-04-20 14:23:02 +0530
committerWolfgang Denk <wd@denx.de>2007-05-15 23:25:37 +0200
commit66d9dbec1cc27d6398ee6cf84639dbe14971251e (patch)
tree55c162c1992cf22fb7a94cb71009e5a9e87f36f9 /drivers/ata_piix.c
parent644e6fb4eb8be90ea04ba34b643a8bf019d680e0 (diff)
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Add driver for S-ATA-controller on Intel processors with South
Bridge, ICH-5, ICH-6 and ICH-7. Implementation: 1. Code is divided in to two files. All functions, which are controller specific are kept in "drivers/ata_piix.c" file and functions, which are not controller specific, are kept in "common/cmd_sata.c" file. 2. Reading and Writing from the S-ATA drive is done using PIO method. 3. Driver can be configured for 48-bit addressing by defining macro CONFIG_LBA48, if this macro is not defined driver uses the 28-bit addressing. 4. S-ATA read function is hooked to the File system, commands like ext2ls and ext2load file can be used. This has been tested. 5. U-Boot command "SATA_init" is added, which initializes the S-ATA controller and identifies the S-ATA drives connected to it. 6. U-Boot command "sata" is added, which is used to read/write, print partition table and get info about the drives present. This I have implemented in same way as "ide" command is implemented in U-Boot. 7. This driver is for S-ATA in native mode. 8. This driver does not support the Native command queuing and Hot-plugging. Signed-off-by: Mushtaq Khan <mushtaq_k@procsys.com>
Diffstat (limited to 'drivers/ata_piix.c')
-rw-r--r--drivers/ata_piix.c216
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..7e61163
--- /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