--- /dev/null
+/*
+ * Copyright (C) Excito Elektronik i Skåne AB, All rights reserved.
+ * Author: Tor Krill <tor@excito.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ *
+ * This is a driver for Silicon Image sil3114 sata chip modelled on
+ * the ata_piix driver
+ */
+
+#include <common.h>
+#include <pci.h>
+#include <command.h>
+#include <config.h>
+#include <asm/byteorder.h>
+#include <asm/io.h>
+#include <ide.h>
+#include <sata.h>
+#include <libata.h>
+#include "sata_sil3114.h"
+
+/* Convert sectorsize to wordsize */
+#define ATA_SECTOR_WORDS (ATA_SECT_SIZE/2)
+
+/* Forwards */
+u8 sil3114_spin_up (int num);
+u8 sil3114_spin_down (int num);
+static int sata_bus_softreset (int num);
+static void sata_identify (int num, int dev);
+static u8 check_power_mode (int num);
+static void sata_port (struct sata_ioports *ioport);
+static void set_Feature_cmd (int num, int dev);
+static u8 sata_busy_wait (struct sata_ioports *ioaddr, int bits,
+ unsigned int max, u8 usealtstatus);
+static u8 sata_chk_status (struct sata_ioports *ioaddr, u8 usealtstatus);
+static void msleep (int count);
+
+static u32 iobase[6] = { 0, 0, 0, 0, 0, 0}; /* PCI BAR registers for device */
+
+static struct sata_port port[CONFIG_SYS_SATA_MAX_DEVICE];
+
+static void output_data (struct sata_ioports *ioaddr, u16 * sect_buf, int words)
+{
+ while (words--) {
+ __raw_writew (*sect_buf++, (void *)ioaddr->data_addr);
+ }
+}
+
+static int input_data (struct sata_ioports *ioaddr, u16 * sect_buf, int words)
+{
+ while (words--) {
+ *sect_buf++ = __raw_readw ((void *)ioaddr->data_addr);
+ }
+ return 0;
+}
+
+static int sata_bus_softreset (int num)
+{
+ u8 status = 0;
+
+ port[num].dev_mask = 1;
+
+ port[num].ctl_reg = 0x08; /*Default value of control reg */
+ writeb (port[num].ctl_reg, port[num].ioaddr.ctl_addr);
+ udelay (10);
+ writeb (port[num].ctl_reg | ATA_SRST, port[num].ioaddr.ctl_addr);
+ udelay (10);
+ writeb (port[num].ctl_reg, port[num].ioaddr.ctl_addr);
+
+ /* spec mandates ">= 2ms" before checking status.
+ * We wait 150ms, because that was the magic delay used for
+ * ATAPI devices in Hale Landis's ATADRVR, for the period of time
+ * between when the ATA command register is written, and then
+ * status is checked. Because waiting for "a while" before
+ * checking status is fine, post SRST, we perform this magic
+ * delay here as well.
+ */
+ msleep (150);
+ status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 300, 0);
+ while ((status & ATA_BUSY)) {
+ msleep (100);
+ status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 3, 0);
+ }
+
+ if (status & ATA_BUSY) {
+ printf ("ata%u is slow to respond,plz be patient\n", num);
+ }
+
+ while ((status & ATA_BUSY)) {
+ msleep (100);
+ status = sata_chk_status (&port[num].ioaddr, 0);
+ }
+
+ if (status & ATA_BUSY) {
+ printf ("ata%u failed to respond : ", num);
+ printf ("bus reset failed\n");
+ port[num].dev_mask = 0;
+ return 1;
+ }
+ return 0;
+}
+
+static void sata_identify (int num, int dev)
+{
+ u8 cmd = 0, status = 0, devno = num;
+ u16 iobuf[ATA_SECTOR_WORDS];
+ u64 n_sectors = 0;
+
+ memset (iobuf, 0, sizeof (iobuf));
+
+ if (!(port[num].dev_mask & 0x01)) {
+ printf ("dev%d is not present on port#%d\n", dev, num);
+ return;
+ }
+
+ debug ("port=%d dev=%d\n", num, dev);
+
+ status = 0;
+ cmd = ATA_CMD_ID_ATA; /*Device Identify Command */
+ writeb (cmd, port[num].ioaddr.command_addr);
+ readb (port[num].ioaddr.altstatus_addr);
+ udelay (10);
+
+ status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 1000, 0);
+ if (status & ATA_ERR) {
+ printf ("\ndevice not responding\n");
+ port[num].dev_mask &= ~0x01;
+ return;
+ }
+
+ input_data (&port[num].ioaddr, iobuf, ATA_SECTOR_WORDS);
+
+ ata_swap_buf_le16 (iobuf, ATA_SECTOR_WORDS);
+
+ debug ("Specific config: %x\n", iobuf[2]);
+
+ /* we require LBA and DMA support (bits 8 & 9 of word 49) */
+ if (!ata_id_has_dma (iobuf) || !ata_id_has_lba (iobuf)) {
+ debug ("ata%u: no dma/lba\n", num);
+ }
+#ifdef DEBUG
+ ata_dump_id (iobuf);
+#endif
+ n_sectors = ata_id_n_sectors (iobuf);
+
+ if (n_sectors == 0) {
+ port[num].dev_mask &= ~0x01;
+ return;
+ }
+ ata_id_c_string (iobuf, (unsigned char *)sata_dev_desc[devno].revision,
+ ATA_ID_FW_REV, sizeof (sata_dev_desc[devno].revision));
+ ata_id_c_string (iobuf, (unsigned char *)sata_dev_desc[devno].vendor,
+ ATA_ID_PROD, sizeof (sata_dev_desc[devno].vendor));
+ ata_id_c_string (iobuf, (unsigned char *)sata_dev_desc[devno].product,
+ ATA_ID_SERNO, sizeof (sata_dev_desc[devno].product));
+
+ /* TODO - atm we asume harddisk ie not removable */
+ sata_dev_desc[devno].removable = 0;
+
+ sata_dev_desc[devno].lba = (u32) n_sectors;
+ debug("lba=0x%lx\n", sata_dev_desc[devno].lba);
+
+#ifdef CONFIG_LBA48
+ if (iobuf[83] & (1 << 10)) {
+ sata_dev_desc[devno].lba48 = 1;
+ } else {
+ sata_dev_desc[devno].lba48 = 0;
+ }
+#endif
+
+ /* assuming HD */
+ sata_dev_desc[devno].type = DEV_TYPE_HARDDISK;
+ sata_dev_desc[devno].blksz = ATA_SECT_SIZE;
+ sata_dev_desc[devno].lun = 0; /* just to fill something in... */
+}
+
+static void set_Feature_cmd (int num, int dev)
+{
+ u8 status = 0;
+
+ if (!(port[num].dev_mask & 0x01)) {
+ debug ("dev%d is not present on port#%d\n", dev, num);
+ return;
+ }
+
+ writeb (SETFEATURES_XFER, port[num].ioaddr.feature_addr);
+ writeb (XFER_PIO_4, port[num].ioaddr.nsect_addr);
+ writeb (0, port[num].ioaddr.lbal_addr);
+ writeb (0, port[num].ioaddr.lbam_addr);
+ writeb (0, port[num].ioaddr.lbah_addr);
+
+ writeb (ATA_DEVICE_OBS, port[num].ioaddr.device_addr);
+ writeb (ATA_CMD_SET_FEATURES, port[num].ioaddr.command_addr);
+
+ udelay (50);
+ msleep (150);
+
+ status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 5000, 0);
+ if ((status & (ATA_BUSY | ATA_ERR))) {
+ printf ("Error : status 0x%02x\n", status);
+ port[num].dev_mask &= ~0x01;
+ }
+}
+
+u8 sil3114_spin_down (int num)
+{
+ u8 status = 0;
+
+ debug ("Spin down disk\n");
+
+ if (!(port[num].dev_mask & 0x01)) {
+ debug ("Device ata%d is not present\n", num);
+ return 1;
+ }
+
+ if ((status = check_power_mode (num)) == 0x00) {
+ debug ("Already in standby\n");
+ return 0;
+ }
+
+ if (status == 0x01) {
+ printf ("Failed to check power mode on ata%d\n", num);
+ return 1;
+ }
+
+ if (!((status = sata_chk_status (&port[num].ioaddr, 0)) & ATA_DRDY)) {
+ printf ("Device ata%d not ready\n", num);
+ return 1;
+ }
+
+ writeb (0x00, port[num].ioaddr.feature_addr);
+
+ writeb (0x00, port[num].ioaddr.nsect_addr);
+ writeb (0x00, port[num].ioaddr.lbal_addr);
+ writeb (0x00, port[num].ioaddr.lbam_addr);
+ writeb (0x00, port[num].ioaddr.lbah_addr);
+
+ writeb (ATA_DEVICE_OBS, port[num].ioaddr.device_addr);
+ writeb (ATA_CMD_STANDBY, port[num].ioaddr.command_addr);
+
+ status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 30000, 0);
+ if ((status & (ATA_BUSY | ATA_ERR))) {
+ printf ("Error waiting for disk spin down: status 0x%02x\n",
+ status);
+ port[num].dev_mask &= ~0x01;
+ return 1;
+ }
+ return 0;
+}
+
+u8 sil3114_spin_up (int num)
+{
+ u8 status = 0;
+
+ debug ("Spin up disk\n");
+
+ if (!(port[num].dev_mask & 0x01)) {
+ debug ("Device ata%d is not present\n", num);
+ return 1;
+ }
+
+ if ((status = check_power_mode (num)) != 0x00) {
+ if (status == 0x01) {
+ printf ("Failed to check power mode on ata%d\n", num);
+ return 1;
+ } else {
+ /* should be up and running already */
+ return 0;
+ }
+ }
+
+ if (!((status = sata_chk_status (&port[num].ioaddr, 0)) & ATA_DRDY)) {
+ printf ("Device ata%d not ready\n", num);
+ return 1;
+ }
+
+ debug ("Stautus of device check: %d\n", status);
+
+ writeb (0x00, port[num].ioaddr.feature_addr);
+
+ writeb (0x00, port[num].ioaddr.nsect_addr);
+ writeb (0x00, port[num].ioaddr.lbal_addr);
+ writeb (0x00, port[num].ioaddr.lbam_addr);
+ writeb (0x00, port[num].ioaddr.lbah_addr);
+
+ writeb (ATA_DEVICE_OBS, port[num].ioaddr.device_addr);
+ writeb (ATA_CMD_IDLE, port[num].ioaddr.command_addr);
+
+ status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 30000, 0);
+ if ((status & (ATA_BUSY | ATA_ERR))) {
+ printf ("Error waiting for disk spin up: status 0x%02x\n",
+ status);
+ port[num].dev_mask &= ~0x01;
+ return 1;
+ }
+
+ /* Wait for disk to enter Active state */
+ do {
+ msleep (10);
+ status = check_power_mode (num);
+ } while ((status == 0x00) || (status == 0x80));
+
+ if (status == 0x01) {
+ printf ("Falied waiting for disk to spin up\n");
+ return 1;
+ }
+
+ return 0;
+}
+
+/* Return value is not the usual here
+ * 0x00 - Device stand by
+ * 0x01 - Operation failed
+ * 0x80 - Device idle
+ * 0xff - Device active
+*/
+static u8 check_power_mode (int num)
+{
+ u8 status = 0;
+ u8 res = 0;
+ if (!(port[num].dev_mask & 0x01)) {
+ debug ("Device ata%d is not present\n", num);
+ return 1;
+ }
+
+ if (!(sata_chk_status (&port[num].ioaddr, 0) & ATA_DRDY)) {
+ printf ("Device ata%d not ready\n", num);
+ return 1;
+ }
+
+ writeb (0, port[num].ioaddr.feature_addr);
+ writeb (0, port[num].ioaddr.nsect_addr);
+ writeb (0, port[num].ioaddr.lbal_addr);
+ writeb (0, port[num].ioaddr.lbam_addr);
+ writeb (0, port[num].ioaddr.lbah_addr);
+
+ writeb (ATA_DEVICE_OBS, port[num].ioaddr.device_addr);
+ writeb (ATA_CMD_CHK_POWER, port[num].ioaddr.command_addr);
+
+ status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 5000, 0);
+ if ((status & (ATA_BUSY | ATA_ERR))) {
+ printf
+ ("Error waiting for check power mode complete : status 0x%02x\n",
+ status);
+ port[num].dev_mask &= ~0x01;
+ return 1;
+ }
+ res = readb (port[num].ioaddr.nsect_addr);
+ debug ("Check powermode: %d\n", res);
+ return res;
+
+}
+
+static void sata_port (struct sata_ioports *ioport)
+{
+ ioport->data_addr = ioport->cmd_addr + ATA_REG_DATA;
+ ioport->error_addr = ioport->cmd_addr + ATA_REG_ERR;
+ ioport->feature_addr = ioport->cmd_addr + ATA_REG_FEATURE;
+ ioport->nsect_addr = ioport->cmd_addr + ATA_REG_NSECT;
+ ioport->lbal_addr = ioport->cmd_addr + ATA_REG_LBAL;
+ ioport->lbam_addr = ioport->cmd_addr + ATA_REG_LBAM;
+ ioport->lbah_addr = ioport->cmd_addr + ATA_REG_LBAH;
+ ioport->device_addr = ioport->cmd_addr + ATA_REG_DEVICE;
+ ioport->status_addr = ioport->cmd_addr + ATA_REG_STATUS;
+ ioport->command_addr = ioport->cmd_addr + ATA_REG_CMD;
+}
+
+static u8 wait_for_irq (int num, unsigned int max)
+{
+
+ u32 port = iobase[5];
+ switch (num) {
+ case 0:
+ port += VND_TF_CNST_CH0;
+ break;
+ case 1:
+ port += VND_TF_CNST_CH1;
+ break;
+ case 2:
+ port += VND_TF_CNST_CH2;
+ break;
+ case 3:
+ port += VND_TF_CNST_CH3;
+ break;
+ default:
+ return 1;
+ }
+
+ do {
+ if (readl (port) & VND_TF_CNST_INTST) {
+ break;
+ }
+ udelay (1000);
+ max--;
+ } while ((max > 0));
+
+ return (max == 0);
+}
+
+static u8 sata_busy_wait (struct sata_ioports *ioaddr, int bits,
+ unsigned int max, u8 usealtstatus)
+{
+ u8 status;
+
+ do {
+ if (!((status = sata_chk_status (ioaddr, usealtstatus)) & bits)) {
+ break;
+ }
+ udelay (1000);
+ max--;
+ } while ((status & bits) && (max > 0));
+
+ return status;
+}
+
+static u8 sata_chk_status (struct sata_ioports *ioaddr, u8 usealtstatus)
+{
+ if (!usealtstatus) {
+ return readb (ioaddr->status_addr);
+ } else {
+ return readb (ioaddr->altstatus_addr);
+ }
+}
+
+static void msleep (int count)
+{
+ int i;
+
+ for (i = 0; i < count; i++)
+ udelay (1000);
+}
+
+/* Read up to 255 sectors
+ *
+ * Returns sectors read
+*/
+static u8 do_one_read (int device, ulong block, u8 blkcnt, u16 * buff,
+ uchar lba48)
+{
+
+ u8 sr = 0;
+ u8 status;
+ u64 blknr = (u64) block;
+
+ if (!(sata_chk_status (&port[device].ioaddr, 0) & ATA_DRDY)) {
+ printf ("Device ata%d not ready\n", device);
+ return 0;
+ }
+
+ /* Set up transfer */
+#ifdef CONFIG_LBA48
+ if (lba48) {
+ /* write high bits */
+ writeb (0, port[device].ioaddr.nsect_addr);
+ writeb ((blknr >> 24) & 0xFF, port[device].ioaddr.lbal_addr);
+ writeb ((blknr >> 32) & 0xFF, port[device].ioaddr.lbam_addr);
+ writeb ((blknr >> 40) & 0xFF, port[device].ioaddr.lbah_addr);
+ }
+#endif
+ writeb (blkcnt, port[device].ioaddr.nsect_addr);
+ writeb (((blknr) >> 0) & 0xFF, port[device].ioaddr.lbal_addr);
+ writeb ((blknr >> 8) & 0xFF, port[device].ioaddr.lbam_addr);
+ writeb ((blknr >> 16) & 0xFF, port[device].ioaddr.lbah_addr);
+
+#ifdef CONFIG_LBA48
+ if (lba48) {
+ writeb (ATA_LBA, port[device].ioaddr.device_addr);
+ writeb (ATA_CMD_PIO_READ_EXT, port[device].ioaddr.command_addr);
+ } else
+#endif
+ {
+ writeb (ATA_LBA | ((blknr >> 24) & 0xF),
+ port[device].ioaddr.device_addr);
+ writeb (ATA_CMD_PIO_READ, port[device].ioaddr.command_addr);
+ }
+
+ status = sata_busy_wait (&port[device].ioaddr, ATA_BUSY, 10000, 1);
+
+ if (status & ATA_BUSY) {
+ u8 err = 0;
+
+ printf ("Device %d not responding status %d\n", device, status);
+ err = readb (port[device].ioaddr.error_addr);
+ printf ("Error reg = 0x%x\n", err);
+
+ return (sr);
+ }
+ while (blkcnt--) {
+
+ if (wait_for_irq (device, 500)) {
+ printf ("ata%u irq failed\n", device);
+ return sr;
+ }
+
+ status = sata_chk_status (&port[device].ioaddr, 0);
+ if (status & ATA_ERR) {
+ printf ("ata%u error %d\n", device,
+ readb (port[device].ioaddr.error_addr));
+ return sr;
+ }
+ /* Read one sector */
+ input_data (&port[device].ioaddr, buff, ATA_SECTOR_WORDS);
+ buff += ATA_SECTOR_WORDS;
+ sr++;
+
+ }
+ return sr;
+}
+
+ulong sata_read (int device, ulong block, lbaint_t blkcnt, void *buff)
+{
+ ulong n = 0, sread;
+ u16 *buffer = (u16 *) buff;
+ u8 status = 0;
+ u64 blknr = (u64) block;
+ unsigned char lba48 = 0;
+
+#ifdef CONFIG_LBA48
+ if (blknr > 0xfffffff) {
+ if (!sata_dev_desc[device].lba48) {
+ printf ("Drive doesn't support 48-bit addressing\n");
+ return 0;
+ }
+ /* more than 28 bits used, use 48bit mode */
+ lba48 = 1;
+ }
+#endif
+
+ while (blkcnt > 0) {
+
+ if (blkcnt > 255) {
+ sread = 255;
+ } else {
+ sread = blkcnt;
+ }
+
+ status = do_one_read (device, blknr, sread, buffer, lba48);
+ if (status != sread) {
+ printf ("Read failed\n");
+ return n;
+ }
+
+ blkcnt -= sread;
+ blknr += sread;
+ n += sread;
+ buffer += sread * ATA_SECTOR_WORDS;
+ }
+ return n;
+}
+
+ulong sata_write (int device, ulong block, lbaint_t blkcnt, const void *buff)
+{
+ ulong n = 0;
+ u16 *buffer = (u16 *) buff;
+ unsigned char status = 0, num = 0;
+ u64 blknr = (u64) block;
+#ifdef CONFIG_LBA48
+ unsigned char lba48 = 0;
+
+ if (blknr > 0xfffffff) {
+ if (!sata_dev_desc[device].lba48) {
+ printf ("Drive doesn't support 48-bit addressing\n");
+ return 0;
+ }
+ /* more than 28 bits used, use 48bit mode */
+ lba48 = 1;
+ }
+#endif
+ /*Port Number */
+ num = device;
+
+ while (blkcnt-- > 0) {
+ status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 500, 0);
+ if (status & ATA_BUSY) {
+ printf ("ata%u failed to respond\n", port[num].port_no);
+ return n;
+ }
+#ifdef CONFIG_LBA48
+ if (lba48) {
+ /* write high bits */
+ writeb (0, port[num].ioaddr.nsect_addr);
+ writeb ((blknr >> 24) & 0xFF,
+ port[num].ioaddr.lbal_addr);
+ writeb ((blknr >> 32) & 0xFF,
+ port[num].ioaddr.lbam_addr);
+ writeb ((blknr >> 40) & 0xFF,
+ port[num].ioaddr.lbah_addr);
+ }
+#endif
+ writeb (1, port[num].ioaddr.nsect_addr);
+ writeb ((blknr >> 0) & 0xFF, port[num].ioaddr.lbal_addr);
+ writeb ((blknr >> 8) & 0xFF, port[num].ioaddr.lbam_addr);
+ writeb ((blknr >> 16) & 0xFF, port[num].ioaddr.lbah_addr);
+#ifdef CONFIG_LBA48
+ if (lba48) {
+ writeb (ATA_LBA, port[num].ioaddr.device_addr);
+ writeb (ATA_CMD_PIO_WRITE_EXT, port[num].ioaddr.command_addr);
+ } else
+#endif
+ {
+ writeb (ATA_LBA | ((blknr >> 24) & 0xF),
+ port[num].ioaddr.device_addr);
+ writeb (ATA_CMD_PIO_WRITE, port[num].ioaddr.command_addr);
+ }
+
+ msleep (50);
+ /*may take up to 4 sec */
+ status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 4000, 0);
+ if ((status & (ATA_DRQ | ATA_BUSY | ATA_ERR)) != ATA_DRQ) {
+ printf ("Error no DRQ dev %d blk %ld: sts 0x%02x\n",
+ device, (ulong) blknr, status);
+ return (n);
+ }
+
+ output_data (&port[num].ioaddr, buffer, ATA_SECTOR_WORDS);
+ readb (port[num].ioaddr.altstatus_addr);
+ udelay (50);
+
+ ++n;
+ ++blknr;
+ buffer += ATA_SECTOR_WORDS;
+ }
+ return n;
+}
+
+/* Driver implementation */
+static u8 sil_get_device_cache_line (pci_dev_t pdev)
+{
+ u8 cache_line = 0;
+ pci_read_config_byte (pdev, PCI_CACHE_LINE_SIZE, &cache_line);
+ return cache_line;
+}
+
+int init_sata (int dev)
+{
+ static u8 init_done = 0;
+ static int res = 1;
+ pci_dev_t devno;
+ u8 cls = 0;
+ u16 cmd = 0;
+ u32 sconf = 0;
+
+ if (init_done) {
+ return res;
+ }
+
+ init_done = 1;
+
+ if ((devno = pci_find_device (SIL_VEND_ID, SIL3114_DEVICE_ID, 0)) == -1) {
+ res = 1;
+ return res;
+ }
+
+ /* Read out all BARs, even though we only use MMIO from BAR5 */
+ pci_read_config_dword (devno, PCI_BASE_ADDRESS_0, &iobase[0]);
+ pci_read_config_dword (devno, PCI_BASE_ADDRESS_1, &iobase[1]);
+ pci_read_config_dword (devno, PCI_BASE_ADDRESS_2, &iobase[2]);
+ pci_read_config_dword (devno, PCI_BASE_ADDRESS_3, &iobase[3]);
+ pci_read_config_dword (devno, PCI_BASE_ADDRESS_4, &iobase[4]);
+ pci_read_config_dword (devno, PCI_BASE_ADDRESS_5, &iobase[5]);
+
+ if ((iobase[0] == 0xFFFFFFFF) || (iobase[1] == 0xFFFFFFFF) ||
+ (iobase[2] == 0xFFFFFFFF) || (iobase[3] == 0xFFFFFFFF) ||
+ (iobase[4] == 0xFFFFFFFF) || (iobase[5] == 0xFFFFFFFF)) {
+ printf ("Error no base addr for SATA controller\n");
+ res = 1;
+ return res;
+ }
+
+ /* mask off unused bits */
+ iobase[0] &= 0xfffffffc;
+ iobase[1] &= 0xfffffff8;
+ iobase[2] &= 0xfffffffc;
+ iobase[3] &= 0xfffffff8;
+ iobase[4] &= 0xfffffff0;
+ iobase[5] &= 0xfffffc00;
+
+ /* from sata_sil in Linux kernel */
+ cls = sil_get_device_cache_line (devno);
+ if (cls) {
+ cls >>= 3;
+ cls++; /* cls = (line_size/8)+1 */
+ writel (cls << 8 | cls, iobase[5] + VND_FIFOCFG_CH0);
+ writel (cls << 8 | cls, iobase[5] + VND_FIFOCFG_CH1);
+ writel (cls << 8 | cls, iobase[5] + VND_FIFOCFG_CH2);
+ writel (cls << 8 | cls, iobase[5] + VND_FIFOCFG_CH3);
+ } else {
+ printf ("Cache line not set. Driver may not function\n");
+ }
+
+ /* Enable operation */
+ pci_read_config_word (devno, PCI_COMMAND, &cmd);
+ cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_IO | PCI_COMMAND_MEMORY;
+ pci_write_config_word (devno, PCI_COMMAND, cmd);
+
+ /* Disable interrupt usage */
+ pci_read_config_dword (devno, VND_SYSCONFSTAT, &sconf);
+ sconf |= (VND_SYSCONFSTAT_CHN_0_INTBLOCK | VND_SYSCONFSTAT_CHN_1_INTBLOCK);
+ pci_write_config_dword (devno, VND_SYSCONFSTAT, sconf);
+
+ res = 0;
+ return res;
+}
+
+/* Check if device is connected to port */
+int sata_bus_probe (int portno)
+{
+ u32 port = iobase[5];
+ u32 val;
+ switch (portno) {
+ case 0:
+ port += VND_SSTATUS_CH0;
+ break;
+ case 1:
+ port += VND_SSTATUS_CH1;
+ break;
+ case 2:
+ port += VND_SSTATUS_CH2;
+ break;
+ case 3:
+ port += VND_SSTATUS_CH3;
+ break;
+ default:
+ return 0;
+ }
+ val = readl (port);
+ if ((val & SATA_DET_PRES) == SATA_DET_PRES) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+int sata_phy_reset (int portno)
+{
+ u32 port = iobase[5];
+ u32 val;
+ switch (portno) {
+ case 0:
+ port += VND_SCONTROL_CH0;
+ break;
+ case 1:
+ port += VND_SCONTROL_CH1;
+ break;
+ case 2:
+ port += VND_SCONTROL_CH2;
+ break;
+ case 3:
+ port += VND_SCONTROL_CH3;
+ break;
+ default:
+ return 0;
+ }
+ val = readl (port);
+ writel (val | SATA_SC_DET_RST, port);
+ msleep (150);
+ writel (val & ~SATA_SC_DET_RST, port);
+ return 0;
+}
+
+int scan_sata (int dev)
+{
+ /* A bit brain dead, but the code has a legacy */
+ switch (dev) {
+ case 0:
+ port[0].port_no = 0;
+ port[0].ioaddr.cmd_addr = iobase[5] + VND_TF0_CH0;
+ port[0].ioaddr.altstatus_addr = port[0].ioaddr.ctl_addr =
+ (iobase[5] + VND_TF2_CH0) | ATA_PCI_CTL_OFS;
+ port[0].ioaddr.bmdma_addr = iobase[5] + VND_BMDMA_CH0;
+ break;
+#if (CONFIG_SYS_SATA_MAX_DEVICE >= 1)
+ case 1:
+ port[1].port_no = 0;
+ port[1].ioaddr.cmd_addr = iobase[5] + VND_TF0_CH1;
+ port[1].ioaddr.altstatus_addr = port[1].ioaddr.ctl_addr =
+ (iobase[5] + VND_TF2_CH1) | ATA_PCI_CTL_OFS;
+ port[1].ioaddr.bmdma_addr = iobase[5] + VND_BMDMA_CH1;
+ break;
+#elif (CONFIG_SYS_SATA_MAX_DEVICE >= 2)
+ case 2:
+ port[2].port_no = 0;
+ port[2].ioaddr.cmd_addr = iobase[5] + VND_TF0_CH2;
+ port[2].ioaddr.altstatus_addr = port[2].ioaddr.ctl_addr =
+ (iobase[5] + VND_TF2_CH2) | ATA_PCI_CTL_OFS;
+ port[2].ioaddr.bmdma_addr = iobase[5] + VND_BMDMA_CH2;
+ break;
+#elif (CONFIG_SYS_SATA_MAX_DEVICE >= 3)
+ case 3:
+ port[3].port_no = 0;
+ port[3].ioaddr.cmd_addr = iobase[5] + VND_TF0_CH3;
+ port[3].ioaddr.altstatus_addr = port[3].ioaddr.ctl_addr =
+ (iobase[5] + VND_TF2_CH3) | ATA_PCI_CTL_OFS;
+ port[3].ioaddr.bmdma_addr = iobase[5] + VND_BMDMA_CH3;
+ break;
+#endif
+ default:
+ printf ("Tried to scan unknown port: ata%d\n", dev);
+ return 1;
+ }
+
+ /* Initialize other registers */
+ sata_port (&port[dev].ioaddr);
+
+ /* Check for attached device */
+ if (!sata_bus_probe (dev)) {
+ port[dev].port_state = 0;
+ debug ("SATA#%d port is not present\n", dev);
+ } else {
+ debug ("SATA#%d port is present\n", dev);
+ if (sata_bus_softreset (dev)) {
+ /* soft reset failed, try a hard one */
+ sata_phy_reset (dev);
+ if (sata_bus_softreset (dev)) {
+ port[dev].port_state = 0;
+ } else {
+ port[dev].port_state = 1;
+ }
+ } else {
+ port[dev].port_state = 1;
+ }
+ }
+ if (port[dev].port_state == 1) {
+ /* Probe device and set xfer mode */
+ sata_identify (dev, 0);
+ set_Feature_cmd (dev, 0);
+ }
+
+ return 0;
+}
Code Review / kvmfornfv.git / blobdiff