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1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
388 lines
10 KiB
C
388 lines
10 KiB
C
/*
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sata_via.c - VIA Serial ATA controllers
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Maintained by: Jeff Garzik <jgarzik@pobox.com>
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Please ALWAYS copy linux-ide@vger.kernel.org
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on emails.
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Copyright 2003-2004 Red Hat, Inc. All rights reserved.
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Copyright 2003-2004 Jeff Garzik
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The contents of this file are subject to the Open
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Software License version 1.1 that can be found at
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http://www.opensource.org/licenses/osl-1.1.txt and is included herein
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by reference.
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Alternatively, the contents of this file may be used under the terms
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of the GNU General Public License version 2 (the "GPL") as distributed
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in the kernel source COPYING file, in which case the provisions of
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the GPL are applicable instead of the above. If you wish to allow
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the use of your version of this file only under the terms of the
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GPL and not to allow others to use your version of this file under
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the OSL, indicate your decision by deleting the provisions above and
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replace them with the notice and other provisions required by the GPL.
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If you do not delete the provisions above, a recipient may use your
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version of this file under either the OSL or the GPL.
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----------------------------------------------------------------------
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To-do list:
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* VT6421 PATA support
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/blkdev.h>
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#include <linux/delay.h>
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#include "scsi.h"
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#include <scsi/scsi_host.h>
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#include <linux/libata.h>
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#include <asm/io.h>
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#define DRV_NAME "sata_via"
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#define DRV_VERSION "1.1"
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enum board_ids_enum {
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vt6420,
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vt6421,
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};
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enum {
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SATA_CHAN_ENAB = 0x40, /* SATA channel enable */
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SATA_INT_GATE = 0x41, /* SATA interrupt gating */
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SATA_NATIVE_MODE = 0x42, /* Native mode enable */
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SATA_PATA_SHARING = 0x49, /* PATA/SATA sharing func ctrl */
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PORT0 = (1 << 1),
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PORT1 = (1 << 0),
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ALL_PORTS = PORT0 | PORT1,
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N_PORTS = 2,
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NATIVE_MODE_ALL = (1 << 7) | (1 << 6) | (1 << 5) | (1 << 4),
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SATA_EXT_PHY = (1 << 6), /* 0==use PATA, 1==ext phy */
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SATA_2DEV = (1 << 5), /* SATA is master/slave */
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};
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static int svia_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
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static u32 svia_scr_read (struct ata_port *ap, unsigned int sc_reg);
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static void svia_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
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static struct pci_device_id svia_pci_tbl[] = {
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{ 0x1106, 0x3149, PCI_ANY_ID, PCI_ANY_ID, 0, 0, vt6420 },
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{ 0x1106, 0x3249, PCI_ANY_ID, PCI_ANY_ID, 0, 0, vt6421 },
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{ } /* terminate list */
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};
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static struct pci_driver svia_pci_driver = {
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.name = DRV_NAME,
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.id_table = svia_pci_tbl,
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.probe = svia_init_one,
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.remove = ata_pci_remove_one,
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};
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static Scsi_Host_Template svia_sht = {
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.module = THIS_MODULE,
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.name = DRV_NAME,
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.ioctl = ata_scsi_ioctl,
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.queuecommand = ata_scsi_queuecmd,
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.eh_strategy_handler = ata_scsi_error,
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.can_queue = ATA_DEF_QUEUE,
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.this_id = ATA_SHT_THIS_ID,
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.sg_tablesize = LIBATA_MAX_PRD,
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.max_sectors = ATA_MAX_SECTORS,
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.cmd_per_lun = ATA_SHT_CMD_PER_LUN,
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.emulated = ATA_SHT_EMULATED,
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.use_clustering = ATA_SHT_USE_CLUSTERING,
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.proc_name = DRV_NAME,
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.dma_boundary = ATA_DMA_BOUNDARY,
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.slave_configure = ata_scsi_slave_config,
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.bios_param = ata_std_bios_param,
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.ordered_flush = 1,
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};
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static struct ata_port_operations svia_sata_ops = {
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.port_disable = ata_port_disable,
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.tf_load = ata_tf_load,
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.tf_read = ata_tf_read,
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.check_status = ata_check_status,
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.exec_command = ata_exec_command,
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.dev_select = ata_std_dev_select,
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.phy_reset = sata_phy_reset,
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.bmdma_setup = ata_bmdma_setup,
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.bmdma_start = ata_bmdma_start,
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.bmdma_stop = ata_bmdma_stop,
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.bmdma_status = ata_bmdma_status,
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.qc_prep = ata_qc_prep,
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.qc_issue = ata_qc_issue_prot,
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.eng_timeout = ata_eng_timeout,
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.irq_handler = ata_interrupt,
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.irq_clear = ata_bmdma_irq_clear,
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.scr_read = svia_scr_read,
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.scr_write = svia_scr_write,
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.port_start = ata_port_start,
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.port_stop = ata_port_stop,
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};
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static struct ata_port_info svia_port_info = {
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.sht = &svia_sht,
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.host_flags = ATA_FLAG_SATA | ATA_FLAG_SRST | ATA_FLAG_NO_LEGACY,
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.pio_mask = 0x1f,
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.mwdma_mask = 0x07,
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.udma_mask = 0x7f,
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.port_ops = &svia_sata_ops,
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};
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MODULE_AUTHOR("Jeff Garzik");
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MODULE_DESCRIPTION("SCSI low-level driver for VIA SATA controllers");
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MODULE_LICENSE("GPL");
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MODULE_DEVICE_TABLE(pci, svia_pci_tbl);
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MODULE_VERSION(DRV_VERSION);
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static u32 svia_scr_read (struct ata_port *ap, unsigned int sc_reg)
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{
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if (sc_reg > SCR_CONTROL)
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return 0xffffffffU;
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return inl(ap->ioaddr.scr_addr + (4 * sc_reg));
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}
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static void svia_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
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{
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if (sc_reg > SCR_CONTROL)
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return;
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outl(val, ap->ioaddr.scr_addr + (4 * sc_reg));
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}
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static const unsigned int svia_bar_sizes[] = {
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8, 4, 8, 4, 16, 256
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};
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static const unsigned int vt6421_bar_sizes[] = {
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16, 16, 16, 16, 32, 128
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};
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static unsigned long svia_scr_addr(unsigned long addr, unsigned int port)
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{
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return addr + (port * 128);
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}
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static unsigned long vt6421_scr_addr(unsigned long addr, unsigned int port)
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{
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return addr + (port * 64);
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}
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static void vt6421_init_addrs(struct ata_probe_ent *probe_ent,
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struct pci_dev *pdev,
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unsigned int port)
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{
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unsigned long reg_addr = pci_resource_start(pdev, port);
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unsigned long bmdma_addr = pci_resource_start(pdev, 4) + (port * 8);
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unsigned long scr_addr;
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probe_ent->port[port].cmd_addr = reg_addr;
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probe_ent->port[port].altstatus_addr =
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probe_ent->port[port].ctl_addr = (reg_addr + 8) | ATA_PCI_CTL_OFS;
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probe_ent->port[port].bmdma_addr = bmdma_addr;
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scr_addr = vt6421_scr_addr(pci_resource_start(pdev, 5), port);
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probe_ent->port[port].scr_addr = scr_addr;
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ata_std_ports(&probe_ent->port[port]);
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}
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static struct ata_probe_ent *vt6420_init_probe_ent(struct pci_dev *pdev)
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{
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struct ata_probe_ent *probe_ent;
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struct ata_port_info *ppi = &svia_port_info;
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probe_ent = ata_pci_init_native_mode(pdev, &ppi);
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if (!probe_ent)
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return NULL;
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probe_ent->port[0].scr_addr =
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svia_scr_addr(pci_resource_start(pdev, 5), 0);
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probe_ent->port[1].scr_addr =
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svia_scr_addr(pci_resource_start(pdev, 5), 1);
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return probe_ent;
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}
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static struct ata_probe_ent *vt6421_init_probe_ent(struct pci_dev *pdev)
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{
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struct ata_probe_ent *probe_ent;
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unsigned int i;
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probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
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if (!probe_ent)
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return NULL;
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memset(probe_ent, 0, sizeof(*probe_ent));
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probe_ent->dev = pci_dev_to_dev(pdev);
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INIT_LIST_HEAD(&probe_ent->node);
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probe_ent->sht = &svia_sht;
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probe_ent->host_flags = ATA_FLAG_SATA | ATA_FLAG_SATA_RESET |
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ATA_FLAG_NO_LEGACY;
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probe_ent->port_ops = &svia_sata_ops;
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probe_ent->n_ports = N_PORTS;
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probe_ent->irq = pdev->irq;
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probe_ent->irq_flags = SA_SHIRQ;
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probe_ent->pio_mask = 0x1f;
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probe_ent->mwdma_mask = 0x07;
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probe_ent->udma_mask = 0x7f;
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for (i = 0; i < N_PORTS; i++)
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vt6421_init_addrs(probe_ent, pdev, i);
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return probe_ent;
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}
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static void svia_configure(struct pci_dev *pdev)
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{
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u8 tmp8;
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pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, &tmp8);
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printk(KERN_INFO DRV_NAME "(%s): routed to hard irq line %d\n",
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pci_name(pdev),
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(int) (tmp8 & 0xf0) == 0xf0 ? 0 : tmp8 & 0x0f);
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/* make sure SATA channels are enabled */
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pci_read_config_byte(pdev, SATA_CHAN_ENAB, &tmp8);
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if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
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printk(KERN_DEBUG DRV_NAME "(%s): enabling SATA channels (0x%x)\n",
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pci_name(pdev), (int) tmp8);
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tmp8 |= ALL_PORTS;
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pci_write_config_byte(pdev, SATA_CHAN_ENAB, tmp8);
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}
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/* make sure interrupts for each channel sent to us */
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pci_read_config_byte(pdev, SATA_INT_GATE, &tmp8);
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if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
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printk(KERN_DEBUG DRV_NAME "(%s): enabling SATA channel interrupts (0x%x)\n",
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pci_name(pdev), (int) tmp8);
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tmp8 |= ALL_PORTS;
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pci_write_config_byte(pdev, SATA_INT_GATE, tmp8);
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}
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/* make sure native mode is enabled */
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pci_read_config_byte(pdev, SATA_NATIVE_MODE, &tmp8);
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if ((tmp8 & NATIVE_MODE_ALL) != NATIVE_MODE_ALL) {
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printk(KERN_DEBUG DRV_NAME "(%s): enabling SATA channel native mode (0x%x)\n",
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pci_name(pdev), (int) tmp8);
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tmp8 |= NATIVE_MODE_ALL;
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pci_write_config_byte(pdev, SATA_NATIVE_MODE, tmp8);
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}
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}
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static int svia_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
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{
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static int printed_version;
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unsigned int i;
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int rc;
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struct ata_probe_ent *probe_ent;
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int board_id = (int) ent->driver_data;
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const int *bar_sizes;
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int pci_dev_busy = 0;
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u8 tmp8;
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if (!printed_version++)
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printk(KERN_DEBUG DRV_NAME " version " DRV_VERSION "\n");
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rc = pci_enable_device(pdev);
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if (rc)
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return rc;
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rc = pci_request_regions(pdev, DRV_NAME);
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if (rc) {
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pci_dev_busy = 1;
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goto err_out;
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}
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if (board_id == vt6420) {
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pci_read_config_byte(pdev, SATA_PATA_SHARING, &tmp8);
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if (tmp8 & SATA_2DEV) {
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printk(KERN_ERR DRV_NAME "(%s): SATA master/slave not supported (0x%x)\n",
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pci_name(pdev), (int) tmp8);
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rc = -EIO;
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goto err_out_regions;
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}
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bar_sizes = &svia_bar_sizes[0];
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} else {
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bar_sizes = &vt6421_bar_sizes[0];
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}
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for (i = 0; i < ARRAY_SIZE(svia_bar_sizes); i++)
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if ((pci_resource_start(pdev, i) == 0) ||
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(pci_resource_len(pdev, i) < bar_sizes[i])) {
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printk(KERN_ERR DRV_NAME "(%s): invalid PCI BAR %u (sz 0x%lx, val 0x%lx)\n",
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pci_name(pdev), i,
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pci_resource_start(pdev, i),
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pci_resource_len(pdev, i));
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rc = -ENODEV;
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goto err_out_regions;
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}
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rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
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if (rc)
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goto err_out_regions;
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rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
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if (rc)
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goto err_out_regions;
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if (board_id == vt6420)
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probe_ent = vt6420_init_probe_ent(pdev);
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else
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probe_ent = vt6421_init_probe_ent(pdev);
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if (!probe_ent) {
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printk(KERN_ERR DRV_NAME "(%s): out of memory\n",
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pci_name(pdev));
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rc = -ENOMEM;
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goto err_out_regions;
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}
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svia_configure(pdev);
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pci_set_master(pdev);
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/* FIXME: check ata_device_add return value */
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ata_device_add(probe_ent);
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kfree(probe_ent);
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return 0;
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err_out_regions:
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pci_release_regions(pdev);
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err_out:
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if (!pci_dev_busy)
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pci_disable_device(pdev);
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return rc;
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}
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static int __init svia_init(void)
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{
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return pci_module_init(&svia_pci_driver);
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}
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static void __exit svia_exit(void)
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{
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pci_unregister_driver(&svia_pci_driver);
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}
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module_init(svia_init);
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module_exit(svia_exit);
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