[libata] Move PCI IDE BMDMA-related code to new file libata-bmdma.c.
This commit is contained in:
Jeff Garzik
Родитель
389984cb75
Коммит
1fdffbce03
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@ -163,7 +163,7 @@ ncr53c8xx-flags-$(CONFIG_SCSI_ZALON) \
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CFLAGS_ncr53c8xx.o := $(ncr53c8xx-flags-y) $(ncr53c8xx-flags-m)
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zalon7xx-objs := zalon.o ncr53c8xx.o
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NCR_Q720_mod-objs := NCR_Q720.o ncr53c8xx.o
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libata-objs := libata-core.o libata-scsi.o
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libata-objs := libata-core.o libata-scsi.o libata-bmdma.o
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oktagon_esp_mod-objs := oktagon_esp.o oktagon_io.o
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# Files generated that shall be removed upon make clean
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@ -0,0 +1,703 @@
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/*
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* libata-bmdma.c - helper library for PCI IDE BMDMA
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*
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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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*
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* Copyright 2003-2006 Red Hat, Inc. All rights reserved.
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* Copyright 2003-2006 Jeff Garzik
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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* libata documentation is available via 'make {ps|pdf}docs',
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* as Documentation/DocBook/libata.*
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*
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* Hardware documentation available from http://www.t13.org/ and
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* http://www.sata-io.org/
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*
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*/
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#include <linux/config.h>
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/libata.h>
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#include "libata.h"
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/**
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* ata_tf_load_pio - send taskfile registers to host controller
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* @ap: Port to which output is sent
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* @tf: ATA taskfile register set
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*
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* Outputs ATA taskfile to standard ATA host controller.
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*
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* LOCKING:
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* Inherited from caller.
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*/
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static void ata_tf_load_pio(struct ata_port *ap, const struct ata_taskfile *tf)
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{
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struct ata_ioports *ioaddr = &ap->ioaddr;
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unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR;
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if (tf->ctl != ap->last_ctl) {
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outb(tf->ctl, ioaddr->ctl_addr);
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ap->last_ctl = tf->ctl;
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ata_wait_idle(ap);
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}
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if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
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outb(tf->hob_feature, ioaddr->feature_addr);
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outb(tf->hob_nsect, ioaddr->nsect_addr);
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outb(tf->hob_lbal, ioaddr->lbal_addr);
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outb(tf->hob_lbam, ioaddr->lbam_addr);
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outb(tf->hob_lbah, ioaddr->lbah_addr);
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VPRINTK("hob: feat 0x%X nsect 0x%X, lba 0x%X 0x%X 0x%X\n",
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tf->hob_feature,
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tf->hob_nsect,
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tf->hob_lbal,
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tf->hob_lbam,
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tf->hob_lbah);
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}
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if (is_addr) {
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outb(tf->feature, ioaddr->feature_addr);
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outb(tf->nsect, ioaddr->nsect_addr);
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outb(tf->lbal, ioaddr->lbal_addr);
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outb(tf->lbam, ioaddr->lbam_addr);
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outb(tf->lbah, ioaddr->lbah_addr);
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VPRINTK("feat 0x%X nsect 0x%X lba 0x%X 0x%X 0x%X\n",
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tf->feature,
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tf->nsect,
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tf->lbal,
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tf->lbam,
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tf->lbah);
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}
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if (tf->flags & ATA_TFLAG_DEVICE) {
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outb(tf->device, ioaddr->device_addr);
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VPRINTK("device 0x%X\n", tf->device);
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}
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ata_wait_idle(ap);
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}
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/**
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* ata_tf_load_mmio - send taskfile registers to host controller
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* @ap: Port to which output is sent
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* @tf: ATA taskfile register set
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*
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* Outputs ATA taskfile to standard ATA host controller using MMIO.
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*
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* LOCKING:
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* Inherited from caller.
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*/
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static void ata_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
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{
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struct ata_ioports *ioaddr = &ap->ioaddr;
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unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR;
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if (tf->ctl != ap->last_ctl) {
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writeb(tf->ctl, (void __iomem *) ap->ioaddr.ctl_addr);
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ap->last_ctl = tf->ctl;
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ata_wait_idle(ap);
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}
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if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
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writeb(tf->hob_feature, (void __iomem *) ioaddr->feature_addr);
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writeb(tf->hob_nsect, (void __iomem *) ioaddr->nsect_addr);
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writeb(tf->hob_lbal, (void __iomem *) ioaddr->lbal_addr);
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writeb(tf->hob_lbam, (void __iomem *) ioaddr->lbam_addr);
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writeb(tf->hob_lbah, (void __iomem *) ioaddr->lbah_addr);
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VPRINTK("hob: feat 0x%X nsect 0x%X, lba 0x%X 0x%X 0x%X\n",
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tf->hob_feature,
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tf->hob_nsect,
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tf->hob_lbal,
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tf->hob_lbam,
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tf->hob_lbah);
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}
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if (is_addr) {
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writeb(tf->feature, (void __iomem *) ioaddr->feature_addr);
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writeb(tf->nsect, (void __iomem *) ioaddr->nsect_addr);
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writeb(tf->lbal, (void __iomem *) ioaddr->lbal_addr);
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writeb(tf->lbam, (void __iomem *) ioaddr->lbam_addr);
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writeb(tf->lbah, (void __iomem *) ioaddr->lbah_addr);
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VPRINTK("feat 0x%X nsect 0x%X lba 0x%X 0x%X 0x%X\n",
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tf->feature,
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tf->nsect,
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tf->lbal,
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tf->lbam,
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tf->lbah);
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}
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if (tf->flags & ATA_TFLAG_DEVICE) {
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writeb(tf->device, (void __iomem *) ioaddr->device_addr);
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VPRINTK("device 0x%X\n", tf->device);
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}
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ata_wait_idle(ap);
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}
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/**
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* ata_tf_load - send taskfile registers to host controller
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* @ap: Port to which output is sent
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* @tf: ATA taskfile register set
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*
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* Outputs ATA taskfile to standard ATA host controller using MMIO
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* or PIO as indicated by the ATA_FLAG_MMIO flag.
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* Writes the control, feature, nsect, lbal, lbam, and lbah registers.
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* Optionally (ATA_TFLAG_LBA48) writes hob_feature, hob_nsect,
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* hob_lbal, hob_lbam, and hob_lbah.
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*
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* This function waits for idle (!BUSY and !DRQ) after writing
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* registers. If the control register has a new value, this
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* function also waits for idle after writing control and before
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* writing the remaining registers.
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*
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* May be used as the tf_load() entry in ata_port_operations.
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*
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* LOCKING:
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* Inherited from caller.
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*/
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void ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
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{
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if (ap->flags & ATA_FLAG_MMIO)
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ata_tf_load_mmio(ap, tf);
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else
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ata_tf_load_pio(ap, tf);
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}
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/**
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* ata_exec_command_pio - issue ATA command to host controller
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* @ap: port to which command is being issued
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* @tf: ATA taskfile register set
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*
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* Issues PIO write to ATA command register, with proper
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* synchronization with interrupt handler / other threads.
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*
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* LOCKING:
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* spin_lock_irqsave(host_set lock)
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*/
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static void ata_exec_command_pio(struct ata_port *ap, const struct ata_taskfile *tf)
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{
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DPRINTK("ata%u: cmd 0x%X\n", ap->id, tf->command);
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outb(tf->command, ap->ioaddr.command_addr);
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ata_pause(ap);
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}
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/**
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* ata_exec_command_mmio - issue ATA command to host controller
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* @ap: port to which command is being issued
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* @tf: ATA taskfile register set
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*
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* Issues MMIO write to ATA command register, with proper
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* synchronization with interrupt handler / other threads.
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*
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* LOCKING:
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* spin_lock_irqsave(host_set lock)
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*/
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static void ata_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
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{
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DPRINTK("ata%u: cmd 0x%X\n", ap->id, tf->command);
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writeb(tf->command, (void __iomem *) ap->ioaddr.command_addr);
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ata_pause(ap);
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}
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/**
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* ata_exec_command - issue ATA command to host controller
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* @ap: port to which command is being issued
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* @tf: ATA taskfile register set
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*
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* Issues PIO/MMIO write to ATA command register, with proper
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* synchronization with interrupt handler / other threads.
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*
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* LOCKING:
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* spin_lock_irqsave(host_set lock)
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*/
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void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf)
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{
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if (ap->flags & ATA_FLAG_MMIO)
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ata_exec_command_mmio(ap, tf);
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else
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ata_exec_command_pio(ap, tf);
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}
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/**
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* ata_tf_read_pio - input device's ATA taskfile shadow registers
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* @ap: Port from which input is read
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* @tf: ATA taskfile register set for storing input
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*
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* Reads ATA taskfile registers for currently-selected device
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* into @tf.
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*
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* LOCKING:
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* Inherited from caller.
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*/
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static void ata_tf_read_pio(struct ata_port *ap, struct ata_taskfile *tf)
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{
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struct ata_ioports *ioaddr = &ap->ioaddr;
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tf->command = ata_check_status(ap);
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tf->feature = inb(ioaddr->error_addr);
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tf->nsect = inb(ioaddr->nsect_addr);
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tf->lbal = inb(ioaddr->lbal_addr);
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tf->lbam = inb(ioaddr->lbam_addr);
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tf->lbah = inb(ioaddr->lbah_addr);
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tf->device = inb(ioaddr->device_addr);
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if (tf->flags & ATA_TFLAG_LBA48) {
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outb(tf->ctl | ATA_HOB, ioaddr->ctl_addr);
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tf->hob_feature = inb(ioaddr->error_addr);
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tf->hob_nsect = inb(ioaddr->nsect_addr);
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tf->hob_lbal = inb(ioaddr->lbal_addr);
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tf->hob_lbam = inb(ioaddr->lbam_addr);
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tf->hob_lbah = inb(ioaddr->lbah_addr);
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}
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}
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/**
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* ata_tf_read_mmio - input device's ATA taskfile shadow registers
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* @ap: Port from which input is read
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* @tf: ATA taskfile register set for storing input
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*
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* Reads ATA taskfile registers for currently-selected device
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* into @tf via MMIO.
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*
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* LOCKING:
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* Inherited from caller.
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*/
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static void ata_tf_read_mmio(struct ata_port *ap, struct ata_taskfile *tf)
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{
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struct ata_ioports *ioaddr = &ap->ioaddr;
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tf->command = ata_check_status(ap);
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tf->feature = readb((void __iomem *)ioaddr->error_addr);
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tf->nsect = readb((void __iomem *)ioaddr->nsect_addr);
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tf->lbal = readb((void __iomem *)ioaddr->lbal_addr);
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tf->lbam = readb((void __iomem *)ioaddr->lbam_addr);
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tf->lbah = readb((void __iomem *)ioaddr->lbah_addr);
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tf->device = readb((void __iomem *)ioaddr->device_addr);
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if (tf->flags & ATA_TFLAG_LBA48) {
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writeb(tf->ctl | ATA_HOB, (void __iomem *) ap->ioaddr.ctl_addr);
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tf->hob_feature = readb((void __iomem *)ioaddr->error_addr);
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tf->hob_nsect = readb((void __iomem *)ioaddr->nsect_addr);
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tf->hob_lbal = readb((void __iomem *)ioaddr->lbal_addr);
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tf->hob_lbam = readb((void __iomem *)ioaddr->lbam_addr);
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tf->hob_lbah = readb((void __iomem *)ioaddr->lbah_addr);
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}
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}
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/**
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* ata_tf_read - input device's ATA taskfile shadow registers
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* @ap: Port from which input is read
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* @tf: ATA taskfile register set for storing input
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*
|
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* Reads ATA taskfile registers for currently-selected device
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* into @tf.
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*
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* Reads nsect, lbal, lbam, lbah, and device. If ATA_TFLAG_LBA48
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* is set, also reads the hob registers.
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*
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* May be used as the tf_read() entry in ata_port_operations.
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*
|
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* LOCKING:
|
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* Inherited from caller.
|
||||
*/
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void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
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{
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if (ap->flags & ATA_FLAG_MMIO)
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ata_tf_read_mmio(ap, tf);
|
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else
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ata_tf_read_pio(ap, tf);
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}
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|
||||
/**
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* ata_check_status_pio - Read device status reg & clear interrupt
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||||
* @ap: port where the device is
|
||||
*
|
||||
* Reads ATA taskfile status register for currently-selected device
|
||||
* and return its value. This also clears pending interrupts
|
||||
* from this device
|
||||
*
|
||||
* LOCKING:
|
||||
* Inherited from caller.
|
||||
*/
|
||||
static u8 ata_check_status_pio(struct ata_port *ap)
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{
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||||
return inb(ap->ioaddr.status_addr);
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||||
}
|
||||
|
||||
/**
|
||||
* ata_check_status_mmio - Read device status reg & clear interrupt
|
||||
* @ap: port where the device is
|
||||
*
|
||||
* Reads ATA taskfile status register for currently-selected device
|
||||
* via MMIO and return its value. This also clears pending interrupts
|
||||
* from this device
|
||||
*
|
||||
* LOCKING:
|
||||
* Inherited from caller.
|
||||
*/
|
||||
static u8 ata_check_status_mmio(struct ata_port *ap)
|
||||
{
|
||||
return readb((void __iomem *) ap->ioaddr.status_addr);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* ata_check_status - Read device status reg & clear interrupt
|
||||
* @ap: port where the device is
|
||||
*
|
||||
* Reads ATA taskfile status register for currently-selected device
|
||||
* and return its value. This also clears pending interrupts
|
||||
* from this device
|
||||
*
|
||||
* May be used as the check_status() entry in ata_port_operations.
|
||||
*
|
||||
* LOCKING:
|
||||
* Inherited from caller.
|
||||
*/
|
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u8 ata_check_status(struct ata_port *ap)
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||||
{
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if (ap->flags & ATA_FLAG_MMIO)
|
||||
return ata_check_status_mmio(ap);
|
||||
return ata_check_status_pio(ap);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* ata_altstatus - Read device alternate status reg
|
||||
* @ap: port where the device is
|
||||
*
|
||||
* Reads ATA taskfile alternate status register for
|
||||
* currently-selected device and return its value.
|
||||
*
|
||||
* Note: may NOT be used as the check_altstatus() entry in
|
||||
* ata_port_operations.
|
||||
*
|
||||
* LOCKING:
|
||||
* Inherited from caller.
|
||||
*/
|
||||
u8 ata_altstatus(struct ata_port *ap)
|
||||
{
|
||||
if (ap->ops->check_altstatus)
|
||||
return ap->ops->check_altstatus(ap);
|
||||
|
||||
if (ap->flags & ATA_FLAG_MMIO)
|
||||
return readb((void __iomem *)ap->ioaddr.altstatus_addr);
|
||||
return inb(ap->ioaddr.altstatus_addr);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PCI
|
||||
static struct ata_probe_ent *
|
||||
ata_probe_ent_alloc(struct device *dev, const struct ata_port_info *port)
|
||||
{
|
||||
struct ata_probe_ent *probe_ent;
|
||||
|
||||
probe_ent = kzalloc(sizeof(*probe_ent), GFP_KERNEL);
|
||||
if (!probe_ent) {
|
||||
printk(KERN_ERR DRV_NAME "(%s): out of memory\n",
|
||||
kobject_name(&(dev->kobj)));
|
||||
return NULL;
|
||||
}
|
||||
|
||||
INIT_LIST_HEAD(&probe_ent->node);
|
||||
probe_ent->dev = dev;
|
||||
|
||||
probe_ent->sht = port->sht;
|
||||
probe_ent->host_flags = port->host_flags;
|
||||
probe_ent->pio_mask = port->pio_mask;
|
||||
probe_ent->mwdma_mask = port->mwdma_mask;
|
||||
probe_ent->udma_mask = port->udma_mask;
|
||||
probe_ent->port_ops = port->port_ops;
|
||||
|
||||
return probe_ent;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* ata_pci_init_native_mode - Initialize native-mode driver
|
||||
* @pdev: pci device to be initialized
|
||||
* @port: array[2] of pointers to port info structures.
|
||||
* @ports: bitmap of ports present
|
||||
*
|
||||
* Utility function which allocates and initializes an
|
||||
* ata_probe_ent structure for a standard dual-port
|
||||
* PIO-based IDE controller. The returned ata_probe_ent
|
||||
* structure can be passed to ata_device_add(). The returned
|
||||
* ata_probe_ent structure should then be freed with kfree().
|
||||
*
|
||||
* The caller need only pass the address of the primary port, the
|
||||
* secondary will be deduced automatically. If the device has non
|
||||
* standard secondary port mappings this function can be called twice,
|
||||
* once for each interface.
|
||||
*/
|
||||
|
||||
struct ata_probe_ent *
|
||||
ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int ports)
|
||||
{
|
||||
struct ata_probe_ent *probe_ent =
|
||||
ata_probe_ent_alloc(pci_dev_to_dev(pdev), port[0]);
|
||||
int p = 0;
|
||||
|
||||
if (!probe_ent)
|
||||
return NULL;
|
||||
|
||||
probe_ent->irq = pdev->irq;
|
||||
probe_ent->irq_flags = SA_SHIRQ;
|
||||
probe_ent->private_data = port[0]->private_data;
|
||||
|
||||
if (ports & ATA_PORT_PRIMARY) {
|
||||
probe_ent->port[p].cmd_addr = pci_resource_start(pdev, 0);
|
||||
probe_ent->port[p].altstatus_addr =
|
||||
probe_ent->port[p].ctl_addr =
|
||||
pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS;
|
||||
probe_ent->port[p].bmdma_addr = pci_resource_start(pdev, 4);
|
||||
ata_std_ports(&probe_ent->port[p]);
|
||||
p++;
|
||||
}
|
||||
|
||||
if (ports & ATA_PORT_SECONDARY) {
|
||||
probe_ent->port[p].cmd_addr = pci_resource_start(pdev, 2);
|
||||
probe_ent->port[p].altstatus_addr =
|
||||
probe_ent->port[p].ctl_addr =
|
||||
pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS;
|
||||
probe_ent->port[p].bmdma_addr = pci_resource_start(pdev, 4) + 8;
|
||||
ata_std_ports(&probe_ent->port[p]);
|
||||
p++;
|
||||
}
|
||||
|
||||
probe_ent->n_ports = p;
|
||||
return probe_ent;
|
||||
}
|
||||
|
||||
|
||||
static struct ata_probe_ent *ata_pci_init_legacy_port(struct pci_dev *pdev,
|
||||
struct ata_port_info *port, int port_num)
|
||||
{
|
||||
struct ata_probe_ent *probe_ent;
|
||||
|
||||
probe_ent = ata_probe_ent_alloc(pci_dev_to_dev(pdev), port);
|
||||
if (!probe_ent)
|
||||
return NULL;
|
||||
|
||||
probe_ent->legacy_mode = 1;
|
||||
probe_ent->n_ports = 1;
|
||||
probe_ent->hard_port_no = port_num;
|
||||
probe_ent->private_data = port->private_data;
|
||||
|
||||
switch(port_num)
|
||||
{
|
||||
case 0:
|
||||
probe_ent->irq = 14;
|
||||
probe_ent->port[0].cmd_addr = 0x1f0;
|
||||
probe_ent->port[0].altstatus_addr =
|
||||
probe_ent->port[0].ctl_addr = 0x3f6;
|
||||
break;
|
||||
case 1:
|
||||
probe_ent->irq = 15;
|
||||
probe_ent->port[0].cmd_addr = 0x170;
|
||||
probe_ent->port[0].altstatus_addr =
|
||||
probe_ent->port[0].ctl_addr = 0x376;
|
||||
break;
|
||||
}
|
||||
|
||||
probe_ent->port[0].bmdma_addr =
|
||||
pci_resource_start(pdev, 4) + 8 * port_num;
|
||||
ata_std_ports(&probe_ent->port[0]);
|
||||
|
||||
return probe_ent;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* ata_pci_init_one - Initialize/register PCI IDE host controller
|
||||
* @pdev: Controller to be initialized
|
||||
* @port_info: Information from low-level host driver
|
||||
* @n_ports: Number of ports attached to host controller
|
||||
*
|
||||
* This is a helper function which can be called from a driver's
|
||||
* xxx_init_one() probe function if the hardware uses traditional
|
||||
* IDE taskfile registers.
|
||||
*
|
||||
* This function calls pci_enable_device(), reserves its register
|
||||
* regions, sets the dma mask, enables bus master mode, and calls
|
||||
* ata_device_add()
|
||||
*
|
||||
* LOCKING:
|
||||
* Inherited from PCI layer (may sleep).
|
||||
*
|
||||
* RETURNS:
|
||||
* Zero on success, negative on errno-based value on error.
|
||||
*/
|
||||
|
||||
int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
|
||||
unsigned int n_ports)
|
||||
{
|
||||
struct ata_probe_ent *probe_ent = NULL, *probe_ent2 = NULL;
|
||||
struct ata_port_info *port[2];
|
||||
u8 tmp8, mask;
|
||||
unsigned int legacy_mode = 0;
|
||||
int disable_dev_on_err = 1;
|
||||
int rc;
|
||||
|
||||
DPRINTK("ENTER\n");
|
||||
|
||||
port[0] = port_info[0];
|
||||
if (n_ports > 1)
|
||||
port[1] = port_info[1];
|
||||
else
|
||||
port[1] = port[0];
|
||||
|
||||
if ((port[0]->host_flags & ATA_FLAG_NO_LEGACY) == 0
|
||||
&& (pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) {
|
||||
/* TODO: What if one channel is in native mode ... */
|
||||
pci_read_config_byte(pdev, PCI_CLASS_PROG, &tmp8);
|
||||
mask = (1 << 2) | (1 << 0);
|
||||
if ((tmp8 & mask) != mask)
|
||||
legacy_mode = (1 << 3);
|
||||
}
|
||||
|
||||
/* FIXME... */
|
||||
if ((!legacy_mode) && (n_ports > 2)) {
|
||||
printk(KERN_ERR "ata: BUG: native mode, n_ports > 2\n");
|
||||
n_ports = 2;
|
||||
/* For now */
|
||||
}
|
||||
|
||||
/* FIXME: Really for ATA it isn't safe because the device may be
|
||||
multi-purpose and we want to leave it alone if it was already
|
||||
enabled. Secondly for shared use as Arjan says we want refcounting
|
||||
|
||||
Checking dev->is_enabled is insufficient as this is not set at
|
||||
boot for the primary video which is BIOS enabled
|
||||
*/
|
||||
|
||||
rc = pci_enable_device(pdev);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
rc = pci_request_regions(pdev, DRV_NAME);
|
||||
if (rc) {
|
||||
disable_dev_on_err = 0;
|
||||
goto err_out;
|
||||
}
|
||||
|
||||
/* FIXME: Should use platform specific mappers for legacy port ranges */
|
||||
if (legacy_mode) {
|
||||
if (!request_region(0x1f0, 8, "libata")) {
|
||||
struct resource *conflict, res;
|
||||
res.start = 0x1f0;
|
||||
res.end = 0x1f0 + 8 - 1;
|
||||
conflict = ____request_resource(&ioport_resource, &res);
|
||||
if (!strcmp(conflict->name, "libata"))
|
||||
legacy_mode |= (1 << 0);
|
||||
else {
|
||||
disable_dev_on_err = 0;
|
||||
printk(KERN_WARNING "ata: 0x1f0 IDE port busy\n");
|
||||
}
|
||||
} else
|
||||
legacy_mode |= (1 << 0);
|
||||
|
||||
if (!request_region(0x170, 8, "libata")) {
|
||||
struct resource *conflict, res;
|
||||
res.start = 0x170;
|
||||
res.end = 0x170 + 8 - 1;
|
||||
conflict = ____request_resource(&ioport_resource, &res);
|
||||
if (!strcmp(conflict->name, "libata"))
|
||||
legacy_mode |= (1 << 1);
|
||||
else {
|
||||
disable_dev_on_err = 0;
|
||||
printk(KERN_WARNING "ata: 0x170 IDE port busy\n");
|
||||
}
|
||||
} else
|
||||
legacy_mode |= (1 << 1);
|
||||
}
|
||||
|
||||
/* we have legacy mode, but all ports are unavailable */
|
||||
if (legacy_mode == (1 << 3)) {
|
||||
rc = -EBUSY;
|
||||
goto err_out_regions;
|
||||
}
|
||||
|
||||
rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
|
||||
if (rc)
|
||||
goto err_out_regions;
|
||||
rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
|
||||
if (rc)
|
||||
goto err_out_regions;
|
||||
|
||||
if (legacy_mode) {
|
||||
if (legacy_mode & (1 << 0))
|
||||
probe_ent = ata_pci_init_legacy_port(pdev, port[0], 0);
|
||||
if (legacy_mode & (1 << 1))
|
||||
probe_ent2 = ata_pci_init_legacy_port(pdev, port[1], 1);
|
||||
} else {
|
||||
if (n_ports == 2)
|
||||
probe_ent = ata_pci_init_native_mode(pdev, port, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY);
|
||||
else
|
||||
probe_ent = ata_pci_init_native_mode(pdev, port, ATA_PORT_PRIMARY);
|
||||
}
|
||||
if (!probe_ent && !probe_ent2) {
|
||||
rc = -ENOMEM;
|
||||
goto err_out_regions;
|
||||
}
|
||||
|
||||
pci_set_master(pdev);
|
||||
|
||||
/* FIXME: check ata_device_add return */
|
||||
if (legacy_mode) {
|
||||
if (legacy_mode & (1 << 0))
|
||||
ata_device_add(probe_ent);
|
||||
if (legacy_mode & (1 << 1))
|
||||
ata_device_add(probe_ent2);
|
||||
} else
|
||||
ata_device_add(probe_ent);
|
||||
|
||||
kfree(probe_ent);
|
||||
kfree(probe_ent2);
|
||||
|
||||
return 0;
|
||||
|
||||
err_out_regions:
|
||||
if (legacy_mode & (1 << 0))
|
||||
release_region(0x1f0, 8);
|
||||
if (legacy_mode & (1 << 1))
|
||||
release_region(0x170, 8);
|
||||
pci_release_regions(pdev);
|
||||
err_out:
|
||||
if (disable_dev_on_err)
|
||||
pci_disable_device(pdev);
|
||||
return rc;
|
||||
}
|
||||
|
||||
#endif /* CONFIG_PCI */
|
||||
|
||||
|
|
@ -83,403 +83,6 @@ MODULE_DESCRIPTION("Library module for ATA devices");
|
|||
MODULE_LICENSE("GPL");
|
||||
MODULE_VERSION(DRV_VERSION);
|
||||
|
||||
/**
|
||||
* ata_tf_load_pio - send taskfile registers to host controller
|
||||
* @ap: Port to which output is sent
|
||||
* @tf: ATA taskfile register set
|
||||
*
|
||||
* Outputs ATA taskfile to standard ATA host controller.
|
||||
*
|
||||
* LOCKING:
|
||||
* Inherited from caller.
|
||||
*/
|
||||
|
||||
static void ata_tf_load_pio(struct ata_port *ap, const struct ata_taskfile *tf)
|
||||
{
|
||||
struct ata_ioports *ioaddr = &ap->ioaddr;
|
||||
unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR;
|
||||
|
||||
if (tf->ctl != ap->last_ctl) {
|
||||
outb(tf->ctl, ioaddr->ctl_addr);
|
||||
ap->last_ctl = tf->ctl;
|
||||
ata_wait_idle(ap);
|
||||
}
|
||||
|
||||
if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
|
||||
outb(tf->hob_feature, ioaddr->feature_addr);
|
||||
outb(tf->hob_nsect, ioaddr->nsect_addr);
|
||||
outb(tf->hob_lbal, ioaddr->lbal_addr);
|
||||
outb(tf->hob_lbam, ioaddr->lbam_addr);
|
||||
outb(tf->hob_lbah, ioaddr->lbah_addr);
|
||||
VPRINTK("hob: feat 0x%X nsect 0x%X, lba 0x%X 0x%X 0x%X\n",
|
||||
tf->hob_feature,
|
||||
tf->hob_nsect,
|
||||
tf->hob_lbal,
|
||||
tf->hob_lbam,
|
||||
tf->hob_lbah);
|
||||
}
|
||||
|
||||
if (is_addr) {
|
||||
outb(tf->feature, ioaddr->feature_addr);
|
||||
outb(tf->nsect, ioaddr->nsect_addr);
|
||||
outb(tf->lbal, ioaddr->lbal_addr);
|
||||
outb(tf->lbam, ioaddr->lbam_addr);
|
||||
outb(tf->lbah, ioaddr->lbah_addr);
|
||||
VPRINTK("feat 0x%X nsect 0x%X lba 0x%X 0x%X 0x%X\n",
|
||||
tf->feature,
|
||||
tf->nsect,
|
||||
tf->lbal,
|
||||
tf->lbam,
|
||||
tf->lbah);
|
||||
}
|
||||
|
||||
if (tf->flags & ATA_TFLAG_DEVICE) {
|
||||
outb(tf->device, ioaddr->device_addr);
|
||||
VPRINTK("device 0x%X\n", tf->device);
|
||||
}
|
||||
|
||||
ata_wait_idle(ap);
|
||||
}
|
||||
|
||||
/**
|
||||
* ata_tf_load_mmio - send taskfile registers to host controller
|
||||
* @ap: Port to which output is sent
|
||||
* @tf: ATA taskfile register set
|
||||
*
|
||||
* Outputs ATA taskfile to standard ATA host controller using MMIO.
|
||||
*
|
||||
* LOCKING:
|
||||
* Inherited from caller.
|
||||
*/
|
||||
|
||||
static void ata_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
|
||||
{
|
||||
struct ata_ioports *ioaddr = &ap->ioaddr;
|
||||
unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR;
|
||||
|
||||
if (tf->ctl != ap->last_ctl) {
|
||||
writeb(tf->ctl, (void __iomem *) ap->ioaddr.ctl_addr);
|
||||
ap->last_ctl = tf->ctl;
|
||||
ata_wait_idle(ap);
|
||||
}
|
||||
|
||||
if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
|
||||
writeb(tf->hob_feature, (void __iomem *) ioaddr->feature_addr);
|
||||
writeb(tf->hob_nsect, (void __iomem *) ioaddr->nsect_addr);
|
||||
writeb(tf->hob_lbal, (void __iomem *) ioaddr->lbal_addr);
|
||||
writeb(tf->hob_lbam, (void __iomem *) ioaddr->lbam_addr);
|
||||
writeb(tf->hob_lbah, (void __iomem *) ioaddr->lbah_addr);
|
||||
VPRINTK("hob: feat 0x%X nsect 0x%X, lba 0x%X 0x%X 0x%X\n",
|
||||
tf->hob_feature,
|
||||
tf->hob_nsect,
|
||||
tf->hob_lbal,
|
||||
tf->hob_lbam,
|
||||
tf->hob_lbah);
|
||||
}
|
||||
|
||||
if (is_addr) {
|
||||
writeb(tf->feature, (void __iomem *) ioaddr->feature_addr);
|
||||
writeb(tf->nsect, (void __iomem *) ioaddr->nsect_addr);
|
||||
writeb(tf->lbal, (void __iomem *) ioaddr->lbal_addr);
|
||||
writeb(tf->lbam, (void __iomem *) ioaddr->lbam_addr);
|
||||
writeb(tf->lbah, (void __iomem *) ioaddr->lbah_addr);
|
||||
VPRINTK("feat 0x%X nsect 0x%X lba 0x%X 0x%X 0x%X\n",
|
||||
tf->feature,
|
||||
tf->nsect,
|
||||
tf->lbal,
|
||||
tf->lbam,
|
||||
tf->lbah);
|
||||
}
|
||||
|
||||
if (tf->flags & ATA_TFLAG_DEVICE) {
|
||||
writeb(tf->device, (void __iomem *) ioaddr->device_addr);
|
||||
VPRINTK("device 0x%X\n", tf->device);
|
||||
}
|
||||
|
||||
ata_wait_idle(ap);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* ata_tf_load - send taskfile registers to host controller
|
||||
* @ap: Port to which output is sent
|
||||
* @tf: ATA taskfile register set
|
||||
*
|
||||
* Outputs ATA taskfile to standard ATA host controller using MMIO
|
||||
* or PIO as indicated by the ATA_FLAG_MMIO flag.
|
||||
* Writes the control, feature, nsect, lbal, lbam, and lbah registers.
|
||||
* Optionally (ATA_TFLAG_LBA48) writes hob_feature, hob_nsect,
|
||||
* hob_lbal, hob_lbam, and hob_lbah.
|
||||
*
|
||||
* This function waits for idle (!BUSY and !DRQ) after writing
|
||||
* registers. If the control register has a new value, this
|
||||
* function also waits for idle after writing control and before
|
||||
* writing the remaining registers.
|
||||
*
|
||||
* May be used as the tf_load() entry in ata_port_operations.
|
||||
*
|
||||
* LOCKING:
|
||||
* Inherited from caller.
|
||||
*/
|
||||
void ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
|
||||
{
|
||||
if (ap->flags & ATA_FLAG_MMIO)
|
||||
ata_tf_load_mmio(ap, tf);
|
||||
else
|
||||
ata_tf_load_pio(ap, tf);
|
||||
}
|
||||
|
||||
/**
|
||||
* ata_exec_command_pio - issue ATA command to host controller
|
||||
* @ap: port to which command is being issued
|
||||
* @tf: ATA taskfile register set
|
||||
*
|
||||
* Issues PIO write to ATA command register, with proper
|
||||
* synchronization with interrupt handler / other threads.
|
||||
*
|
||||
* LOCKING:
|
||||
* spin_lock_irqsave(host_set lock)
|
||||
*/
|
||||
|
||||
static void ata_exec_command_pio(struct ata_port *ap, const struct ata_taskfile *tf)
|
||||
{
|
||||
DPRINTK("ata%u: cmd 0x%X\n", ap->id, tf->command);
|
||||
|
||||
outb(tf->command, ap->ioaddr.command_addr);
|
||||
ata_pause(ap);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* ata_exec_command_mmio - issue ATA command to host controller
|
||||
* @ap: port to which command is being issued
|
||||
* @tf: ATA taskfile register set
|
||||
*
|
||||
* Issues MMIO write to ATA command register, with proper
|
||||
* synchronization with interrupt handler / other threads.
|
||||
*
|
||||
* LOCKING:
|
||||
* spin_lock_irqsave(host_set lock)
|
||||
*/
|
||||
|
||||
static void ata_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
|
||||
{
|
||||
DPRINTK("ata%u: cmd 0x%X\n", ap->id, tf->command);
|
||||
|
||||
writeb(tf->command, (void __iomem *) ap->ioaddr.command_addr);
|
||||
ata_pause(ap);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* ata_exec_command - issue ATA command to host controller
|
||||
* @ap: port to which command is being issued
|
||||
* @tf: ATA taskfile register set
|
||||
*
|
||||
* Issues PIO/MMIO write to ATA command register, with proper
|
||||
* synchronization with interrupt handler / other threads.
|
||||
*
|
||||
* LOCKING:
|
||||
* spin_lock_irqsave(host_set lock)
|
||||
*/
|
||||
void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf)
|
||||
{
|
||||
if (ap->flags & ATA_FLAG_MMIO)
|
||||
ata_exec_command_mmio(ap, tf);
|
||||
else
|
||||
ata_exec_command_pio(ap, tf);
|
||||
}
|
||||
|
||||
/**
|
||||
* ata_tf_to_host - issue ATA taskfile to host controller
|
||||
* @ap: port to which command is being issued
|
||||
* @tf: ATA taskfile register set
|
||||
*
|
||||
* Issues ATA taskfile register set to ATA host controller,
|
||||
* with proper synchronization with interrupt handler and
|
||||
* other threads.
|
||||
*
|
||||
* LOCKING:
|
||||
* spin_lock_irqsave(host_set lock)
|
||||
*/
|
||||
|
||||
static inline void ata_tf_to_host(struct ata_port *ap,
|
||||
const struct ata_taskfile *tf)
|
||||
{
|
||||
ap->ops->tf_load(ap, tf);
|
||||
ap->ops->exec_command(ap, tf);
|
||||
}
|
||||
|
||||
/**
|
||||
* ata_tf_read_pio - input device's ATA taskfile shadow registers
|
||||
* @ap: Port from which input is read
|
||||
* @tf: ATA taskfile register set for storing input
|
||||
*
|
||||
* Reads ATA taskfile registers for currently-selected device
|
||||
* into @tf.
|
||||
*
|
||||
* LOCKING:
|
||||
* Inherited from caller.
|
||||
*/
|
||||
|
||||
static void ata_tf_read_pio(struct ata_port *ap, struct ata_taskfile *tf)
|
||||
{
|
||||
struct ata_ioports *ioaddr = &ap->ioaddr;
|
||||
|
||||
tf->command = ata_check_status(ap);
|
||||
tf->feature = inb(ioaddr->error_addr);
|
||||
tf->nsect = inb(ioaddr->nsect_addr);
|
||||
tf->lbal = inb(ioaddr->lbal_addr);
|
||||
tf->lbam = inb(ioaddr->lbam_addr);
|
||||
tf->lbah = inb(ioaddr->lbah_addr);
|
||||
tf->device = inb(ioaddr->device_addr);
|
||||
|
||||
if (tf->flags & ATA_TFLAG_LBA48) {
|
||||
outb(tf->ctl | ATA_HOB, ioaddr->ctl_addr);
|
||||
tf->hob_feature = inb(ioaddr->error_addr);
|
||||
tf->hob_nsect = inb(ioaddr->nsect_addr);
|
||||
tf->hob_lbal = inb(ioaddr->lbal_addr);
|
||||
tf->hob_lbam = inb(ioaddr->lbam_addr);
|
||||
tf->hob_lbah = inb(ioaddr->lbah_addr);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* ata_tf_read_mmio - input device's ATA taskfile shadow registers
|
||||
* @ap: Port from which input is read
|
||||
* @tf: ATA taskfile register set for storing input
|
||||
*
|
||||
* Reads ATA taskfile registers for currently-selected device
|
||||
* into @tf via MMIO.
|
||||
*
|
||||
* LOCKING:
|
||||
* Inherited from caller.
|
||||
*/
|
||||
|
||||
static void ata_tf_read_mmio(struct ata_port *ap, struct ata_taskfile *tf)
|
||||
{
|
||||
struct ata_ioports *ioaddr = &ap->ioaddr;
|
||||
|
||||
tf->command = ata_check_status(ap);
|
||||
tf->feature = readb((void __iomem *)ioaddr->error_addr);
|
||||
tf->nsect = readb((void __iomem *)ioaddr->nsect_addr);
|
||||
tf->lbal = readb((void __iomem *)ioaddr->lbal_addr);
|
||||
tf->lbam = readb((void __iomem *)ioaddr->lbam_addr);
|
||||
tf->lbah = readb((void __iomem *)ioaddr->lbah_addr);
|
||||
tf->device = readb((void __iomem *)ioaddr->device_addr);
|
||||
|
||||
if (tf->flags & ATA_TFLAG_LBA48) {
|
||||
writeb(tf->ctl | ATA_HOB, (void __iomem *) ap->ioaddr.ctl_addr);
|
||||
tf->hob_feature = readb((void __iomem *)ioaddr->error_addr);
|
||||
tf->hob_nsect = readb((void __iomem *)ioaddr->nsect_addr);
|
||||
tf->hob_lbal = readb((void __iomem *)ioaddr->lbal_addr);
|
||||
tf->hob_lbam = readb((void __iomem *)ioaddr->lbam_addr);
|
||||
tf->hob_lbah = readb((void __iomem *)ioaddr->lbah_addr);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* ata_tf_read - input device's ATA taskfile shadow registers
|
||||
* @ap: Port from which input is read
|
||||
* @tf: ATA taskfile register set for storing input
|
||||
*
|
||||
* Reads ATA taskfile registers for currently-selected device
|
||||
* into @tf.
|
||||
*
|
||||
* Reads nsect, lbal, lbam, lbah, and device. If ATA_TFLAG_LBA48
|
||||
* is set, also reads the hob registers.
|
||||
*
|
||||
* May be used as the tf_read() entry in ata_port_operations.
|
||||
*
|
||||
* LOCKING:
|
||||
* Inherited from caller.
|
||||
*/
|
||||
void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
|
||||
{
|
||||
if (ap->flags & ATA_FLAG_MMIO)
|
||||
ata_tf_read_mmio(ap, tf);
|
||||
else
|
||||
ata_tf_read_pio(ap, tf);
|
||||
}
|
||||
|
||||
/**
|
||||
* ata_check_status_pio - Read device status reg & clear interrupt
|
||||
* @ap: port where the device is
|
||||
*
|
||||
* Reads ATA taskfile status register for currently-selected device
|
||||
* and return its value. This also clears pending interrupts
|
||||
* from this device
|
||||
*
|
||||
* LOCKING:
|
||||
* Inherited from caller.
|
||||
*/
|
||||
static u8 ata_check_status_pio(struct ata_port *ap)
|
||||
{
|
||||
return inb(ap->ioaddr.status_addr);
|
||||
}
|
||||
|
||||
/**
|
||||
* ata_check_status_mmio - Read device status reg & clear interrupt
|
||||
* @ap: port where the device is
|
||||
*
|
||||
* Reads ATA taskfile status register for currently-selected device
|
||||
* via MMIO and return its value. This also clears pending interrupts
|
||||
* from this device
|
||||
*
|
||||
* LOCKING:
|
||||
* Inherited from caller.
|
||||
*/
|
||||
static u8 ata_check_status_mmio(struct ata_port *ap)
|
||||
{
|
||||
return readb((void __iomem *) ap->ioaddr.status_addr);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* ata_check_status - Read device status reg & clear interrupt
|
||||
* @ap: port where the device is
|
||||
*
|
||||
* Reads ATA taskfile status register for currently-selected device
|
||||
* and return its value. This also clears pending interrupts
|
||||
* from this device
|
||||
*
|
||||
* May be used as the check_status() entry in ata_port_operations.
|
||||
*
|
||||
* LOCKING:
|
||||
* Inherited from caller.
|
||||
*/
|
||||
u8 ata_check_status(struct ata_port *ap)
|
||||
{
|
||||
if (ap->flags & ATA_FLAG_MMIO)
|
||||
return ata_check_status_mmio(ap);
|
||||
return ata_check_status_pio(ap);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* ata_altstatus - Read device alternate status reg
|
||||
* @ap: port where the device is
|
||||
*
|
||||
* Reads ATA taskfile alternate status register for
|
||||
* currently-selected device and return its value.
|
||||
*
|
||||
* Note: may NOT be used as the check_altstatus() entry in
|
||||
* ata_port_operations.
|
||||
*
|
||||
* LOCKING:
|
||||
* Inherited from caller.
|
||||
*/
|
||||
u8 ata_altstatus(struct ata_port *ap)
|
||||
{
|
||||
if (ap->ops->check_altstatus)
|
||||
return ap->ops->check_altstatus(ap);
|
||||
|
||||
if (ap->flags & ATA_FLAG_MMIO)
|
||||
return readb((void __iomem *)ap->ioaddr.altstatus_addr);
|
||||
return inb(ap->ioaddr.altstatus_addr);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* ata_tf_to_fis - Convert ATA taskfile to SATA FIS structure
|
||||
|
|
@ -2008,6 +1611,26 @@ err_out:
|
|||
ata_port_disable(ap);
|
||||
}
|
||||
|
||||
/**
|
||||
* ata_tf_to_host - issue ATA taskfile to host controller
|
||||
* @ap: port to which command is being issued
|
||||
* @tf: ATA taskfile register set
|
||||
*
|
||||
* Issues ATA taskfile register set to ATA host controller,
|
||||
* with proper synchronization with interrupt handler and
|
||||
* other threads.
|
||||
*
|
||||
* LOCKING:
|
||||
* spin_lock_irqsave(host_set lock)
|
||||
*/
|
||||
|
||||
static inline void ata_tf_to_host(struct ata_port *ap,
|
||||
const struct ata_taskfile *tf)
|
||||
{
|
||||
ap->ops->tf_load(ap, tf);
|
||||
ap->ops->exec_command(ap, tf);
|
||||
}
|
||||
|
||||
/**
|
||||
* ata_busy_sleep - sleep until BSY clears, or timeout
|
||||
* @ap: port containing status register to be polled
|
||||
|
|
@ -5106,32 +4729,6 @@ void ata_std_ports(struct ata_ioports *ioaddr)
|
|||
ioaddr->command_addr = ioaddr->cmd_addr + ATA_REG_CMD;
|
||||
}
|
||||
|
||||
static struct ata_probe_ent *
|
||||
ata_probe_ent_alloc(struct device *dev, const struct ata_port_info *port)
|
||||
{
|
||||
struct ata_probe_ent *probe_ent;
|
||||
|
||||
probe_ent = kzalloc(sizeof(*probe_ent), GFP_KERNEL);
|
||||
if (!probe_ent) {
|
||||
printk(KERN_ERR DRV_NAME "(%s): out of memory\n",
|
||||
kobject_name(&(dev->kobj)));
|
||||
return NULL;
|
||||
}
|
||||
|
||||
INIT_LIST_HEAD(&probe_ent->node);
|
||||
probe_ent->dev = dev;
|
||||
|
||||
probe_ent->sht = port->sht;
|
||||
probe_ent->host_flags = port->host_flags;
|
||||
probe_ent->pio_mask = port->pio_mask;
|
||||
probe_ent->mwdma_mask = port->mwdma_mask;
|
||||
probe_ent->udma_mask = port->udma_mask;
|
||||
probe_ent->port_ops = port->port_ops;
|
||||
|
||||
return probe_ent;
|
||||
}
|
||||
|
||||
|
||||
|
||||
#ifdef CONFIG_PCI
|
||||
|
||||
|
|
@ -5142,256 +4739,6 @@ void ata_pci_host_stop (struct ata_host_set *host_set)
|
|||
pci_iounmap(pdev, host_set->mmio_base);
|
||||
}
|
||||
|
||||
/**
|
||||
* ata_pci_init_native_mode - Initialize native-mode driver
|
||||
* @pdev: pci device to be initialized
|
||||
* @port: array[2] of pointers to port info structures.
|
||||
* @ports: bitmap of ports present
|
||||
*
|
||||
* Utility function which allocates and initializes an
|
||||
* ata_probe_ent structure for a standard dual-port
|
||||
* PIO-based IDE controller. The returned ata_probe_ent
|
||||
* structure can be passed to ata_device_add(). The returned
|
||||
* ata_probe_ent structure should then be freed with kfree().
|
||||
*
|
||||
* The caller need only pass the address of the primary port, the
|
||||
* secondary will be deduced automatically. If the device has non
|
||||
* standard secondary port mappings this function can be called twice,
|
||||
* once for each interface.
|
||||
*/
|
||||
|
||||
struct ata_probe_ent *
|
||||
ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int ports)
|
||||
{
|
||||
struct ata_probe_ent *probe_ent =
|
||||
ata_probe_ent_alloc(pci_dev_to_dev(pdev), port[0]);
|
||||
int p = 0;
|
||||
|
||||
if (!probe_ent)
|
||||
return NULL;
|
||||
|
||||
probe_ent->irq = pdev->irq;
|
||||
probe_ent->irq_flags = SA_SHIRQ;
|
||||
probe_ent->private_data = port[0]->private_data;
|
||||
|
||||
if (ports & ATA_PORT_PRIMARY) {
|
||||
probe_ent->port[p].cmd_addr = pci_resource_start(pdev, 0);
|
||||
probe_ent->port[p].altstatus_addr =
|
||||
probe_ent->port[p].ctl_addr =
|
||||
pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS;
|
||||
probe_ent->port[p].bmdma_addr = pci_resource_start(pdev, 4);
|
||||
ata_std_ports(&probe_ent->port[p]);
|
||||
p++;
|
||||
}
|
||||
|
||||
if (ports & ATA_PORT_SECONDARY) {
|
||||
probe_ent->port[p].cmd_addr = pci_resource_start(pdev, 2);
|
||||
probe_ent->port[p].altstatus_addr =
|
||||
probe_ent->port[p].ctl_addr =
|
||||
pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS;
|
||||
probe_ent->port[p].bmdma_addr = pci_resource_start(pdev, 4) + 8;
|
||||
ata_std_ports(&probe_ent->port[p]);
|
||||
p++;
|
||||
}
|
||||
|
||||
probe_ent->n_ports = p;
|
||||
return probe_ent;
|
||||
}
|
||||
|
||||
static struct ata_probe_ent *ata_pci_init_legacy_port(struct pci_dev *pdev, struct ata_port_info *port, int port_num)
|
||||
{
|
||||
struct ata_probe_ent *probe_ent;
|
||||
|
||||
probe_ent = ata_probe_ent_alloc(pci_dev_to_dev(pdev), port);
|
||||
if (!probe_ent)
|
||||
return NULL;
|
||||
|
||||
probe_ent->legacy_mode = 1;
|
||||
probe_ent->n_ports = 1;
|
||||
probe_ent->hard_port_no = port_num;
|
||||
probe_ent->private_data = port->private_data;
|
||||
|
||||
switch(port_num)
|
||||
{
|
||||
case 0:
|
||||
probe_ent->irq = 14;
|
||||
probe_ent->port[0].cmd_addr = 0x1f0;
|
||||
probe_ent->port[0].altstatus_addr =
|
||||
probe_ent->port[0].ctl_addr = 0x3f6;
|
||||
break;
|
||||
case 1:
|
||||
probe_ent->irq = 15;
|
||||
probe_ent->port[0].cmd_addr = 0x170;
|
||||
probe_ent->port[0].altstatus_addr =
|
||||
probe_ent->port[0].ctl_addr = 0x376;
|
||||
break;
|
||||
}
|
||||
probe_ent->port[0].bmdma_addr = pci_resource_start(pdev, 4) + 8 * port_num;
|
||||
ata_std_ports(&probe_ent->port[0]);
|
||||
return probe_ent;
|
||||
}
|
||||
|
||||
/**
|
||||
* ata_pci_init_one - Initialize/register PCI IDE host controller
|
||||
* @pdev: Controller to be initialized
|
||||
* @port_info: Information from low-level host driver
|
||||
* @n_ports: Number of ports attached to host controller
|
||||
*
|
||||
* This is a helper function which can be called from a driver's
|
||||
* xxx_init_one() probe function if the hardware uses traditional
|
||||
* IDE taskfile registers.
|
||||
*
|
||||
* This function calls pci_enable_device(), reserves its register
|
||||
* regions, sets the dma mask, enables bus master mode, and calls
|
||||
* ata_device_add()
|
||||
*
|
||||
* LOCKING:
|
||||
* Inherited from PCI layer (may sleep).
|
||||
*
|
||||
* RETURNS:
|
||||
* Zero on success, negative on errno-based value on error.
|
||||
*/
|
||||
|
||||
int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
|
||||
unsigned int n_ports)
|
||||
{
|
||||
struct ata_probe_ent *probe_ent = NULL, *probe_ent2 = NULL;
|
||||
struct ata_port_info *port[2];
|
||||
u8 tmp8, mask;
|
||||
unsigned int legacy_mode = 0;
|
||||
int disable_dev_on_err = 1;
|
||||
int rc;
|
||||
|
||||
DPRINTK("ENTER\n");
|
||||
|
||||
port[0] = port_info[0];
|
||||
if (n_ports > 1)
|
||||
port[1] = port_info[1];
|
||||
else
|
||||
port[1] = port[0];
|
||||
|
||||
if ((port[0]->host_flags & ATA_FLAG_NO_LEGACY) == 0
|
||||
&& (pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) {
|
||||
/* TODO: What if one channel is in native mode ... */
|
||||
pci_read_config_byte(pdev, PCI_CLASS_PROG, &tmp8);
|
||||
mask = (1 << 2) | (1 << 0);
|
||||
if ((tmp8 & mask) != mask)
|
||||
legacy_mode = (1 << 3);
|
||||
}
|
||||
|
||||
/* FIXME... */
|
||||
if ((!legacy_mode) && (n_ports > 2)) {
|
||||
printk(KERN_ERR "ata: BUG: native mode, n_ports > 2\n");
|
||||
n_ports = 2;
|
||||
/* For now */
|
||||
}
|
||||
|
||||
/* FIXME: Really for ATA it isn't safe because the device may be
|
||||
multi-purpose and we want to leave it alone if it was already
|
||||
enabled. Secondly for shared use as Arjan says we want refcounting
|
||||
|
||||
Checking dev->is_enabled is insufficient as this is not set at
|
||||
boot for the primary video which is BIOS enabled
|
||||
*/
|
||||
|
||||
rc = pci_enable_device(pdev);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
rc = pci_request_regions(pdev, DRV_NAME);
|
||||
if (rc) {
|
||||
disable_dev_on_err = 0;
|
||||
goto err_out;
|
||||
}
|
||||
|
||||
/* FIXME: Should use platform specific mappers for legacy port ranges */
|
||||
if (legacy_mode) {
|
||||
if (!request_region(0x1f0, 8, "libata")) {
|
||||
struct resource *conflict, res;
|
||||
res.start = 0x1f0;
|
||||
res.end = 0x1f0 + 8 - 1;
|
||||
conflict = ____request_resource(&ioport_resource, &res);
|
||||
if (!strcmp(conflict->name, "libata"))
|
||||
legacy_mode |= (1 << 0);
|
||||
else {
|
||||
disable_dev_on_err = 0;
|
||||
printk(KERN_WARNING "ata: 0x1f0 IDE port busy\n");
|
||||
}
|
||||
} else
|
||||
legacy_mode |= (1 << 0);
|
||||
|
||||
if (!request_region(0x170, 8, "libata")) {
|
||||
struct resource *conflict, res;
|
||||
res.start = 0x170;
|
||||
res.end = 0x170 + 8 - 1;
|
||||
conflict = ____request_resource(&ioport_resource, &res);
|
||||
if (!strcmp(conflict->name, "libata"))
|
||||
legacy_mode |= (1 << 1);
|
||||
else {
|
||||
disable_dev_on_err = 0;
|
||||
printk(KERN_WARNING "ata: 0x170 IDE port busy\n");
|
||||
}
|
||||
} else
|
||||
legacy_mode |= (1 << 1);
|
||||
}
|
||||
|
||||
/* we have legacy mode, but all ports are unavailable */
|
||||
if (legacy_mode == (1 << 3)) {
|
||||
rc = -EBUSY;
|
||||
goto err_out_regions;
|
||||
}
|
||||
|
||||
rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
|
||||
if (rc)
|
||||
goto err_out_regions;
|
||||
rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
|
||||
if (rc)
|
||||
goto err_out_regions;
|
||||
|
||||
if (legacy_mode) {
|
||||
if (legacy_mode & (1 << 0))
|
||||
probe_ent = ata_pci_init_legacy_port(pdev, port[0], 0);
|
||||
if (legacy_mode & (1 << 1))
|
||||
probe_ent2 = ata_pci_init_legacy_port(pdev, port[1], 1);
|
||||
} else {
|
||||
if (n_ports == 2)
|
||||
probe_ent = ata_pci_init_native_mode(pdev, port, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY);
|
||||
else
|
||||
probe_ent = ata_pci_init_native_mode(pdev, port, ATA_PORT_PRIMARY);
|
||||
}
|
||||
if (!probe_ent && !probe_ent2) {
|
||||
rc = -ENOMEM;
|
||||
goto err_out_regions;
|
||||
}
|
||||
|
||||
pci_set_master(pdev);
|
||||
|
||||
/* FIXME: check ata_device_add return */
|
||||
if (legacy_mode) {
|
||||
if (legacy_mode & (1 << 0))
|
||||
ata_device_add(probe_ent);
|
||||
if (legacy_mode & (1 << 1))
|
||||
ata_device_add(probe_ent2);
|
||||
} else
|
||||
ata_device_add(probe_ent);
|
||||
|
||||
kfree(probe_ent);
|
||||
kfree(probe_ent2);
|
||||
|
||||
return 0;
|
||||
|
||||
err_out_regions:
|
||||
if (legacy_mode & (1 << 0))
|
||||
release_region(0x1f0, 8);
|
||||
if (legacy_mode & (1 << 1))
|
||||
release_region(0x170, 8);
|
||||
pci_release_regions(pdev);
|
||||
err_out:
|
||||
if (disable_dev_on_err)
|
||||
pci_disable_device(pdev);
|
||||
return rc;
|
||||
}
|
||||
|
||||
/**
|
||||
* ata_pci_remove_one - PCI layer callback for device removal
|
||||
* @pdev: PCI device that was removed
|
||||
|
|
|
|||
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