mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-18 01:46:48 +07:00
23ebda2fc7
ata_sff_data_xfer_noirq() is invoked via the ->sff_data_xfer hook. The latter is invoked by ata_pio_sector(), atapi_send_cdb() and __atapi_pio_bytes() which in turn is invoked by ata_sff_hsm_move(). The latter function requires that the "ap->lock" lock is held which needs to be taken with disabled interrupts. There is no need have to have ata_sff_data_xfer_noirq() which invokes ata_sff_data_xfer32() with disabled interrupts because at this point the interrupts are already disabled. Remove the function and its references to it and replace all callers with ata_sff_data_xfer32(). Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Tejun Heo <tj@kernel.org>
138 lines
3.1 KiB
C
138 lines
3.1 KiB
C
/*
|
|
* drivers/ata/pata_palmld.c
|
|
*
|
|
* Driver for IDE channel in Palm LifeDrive
|
|
*
|
|
* Based on research of:
|
|
* Alex Osborne <ato@meshy.org>
|
|
*
|
|
* Rewrite for mainline:
|
|
* Marek Vasut <marek.vasut@gmail.com>
|
|
*
|
|
* Rewritten version based on pata_ixp4xx_cf.c:
|
|
* ixp4xx PATA/Compact Flash driver
|
|
* Copyright (C) 2006-07 Tower Technologies
|
|
* Author: Alessandro Zummo <a.zummo@towertech.it>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/libata.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/gpio.h>
|
|
|
|
#include <scsi/scsi_host.h>
|
|
#include <mach/palmld.h>
|
|
|
|
#define DRV_NAME "pata_palmld"
|
|
|
|
static struct gpio palmld_hdd_gpios[] = {
|
|
{ GPIO_NR_PALMLD_IDE_PWEN, GPIOF_INIT_HIGH, "HDD Power" },
|
|
{ GPIO_NR_PALMLD_IDE_RESET, GPIOF_INIT_LOW, "HDD Reset" },
|
|
};
|
|
|
|
static struct scsi_host_template palmld_sht = {
|
|
ATA_PIO_SHT(DRV_NAME),
|
|
};
|
|
|
|
static struct ata_port_operations palmld_port_ops = {
|
|
.inherits = &ata_sff_port_ops,
|
|
.sff_data_xfer = ata_sff_data_xfer32,
|
|
.cable_detect = ata_cable_40wire,
|
|
};
|
|
|
|
static int palmld_pata_probe(struct platform_device *pdev)
|
|
{
|
|
struct ata_host *host;
|
|
struct ata_port *ap;
|
|
void __iomem *mem;
|
|
int ret;
|
|
|
|
/* allocate host */
|
|
host = ata_host_alloc(&pdev->dev, 1);
|
|
if (!host) {
|
|
ret = -ENOMEM;
|
|
goto err1;
|
|
}
|
|
|
|
/* remap drive's physical memory address */
|
|
mem = devm_ioremap(&pdev->dev, PALMLD_IDE_PHYS, 0x1000);
|
|
if (!mem) {
|
|
ret = -ENOMEM;
|
|
goto err1;
|
|
}
|
|
|
|
/* request and activate power GPIO, IRQ GPIO */
|
|
ret = gpio_request_array(palmld_hdd_gpios,
|
|
ARRAY_SIZE(palmld_hdd_gpios));
|
|
if (ret)
|
|
goto err1;
|
|
|
|
/* reset the drive */
|
|
gpio_set_value(GPIO_NR_PALMLD_IDE_RESET, 0);
|
|
msleep(30);
|
|
gpio_set_value(GPIO_NR_PALMLD_IDE_RESET, 1);
|
|
msleep(30);
|
|
|
|
/* setup the ata port */
|
|
ap = host->ports[0];
|
|
ap->ops = &palmld_port_ops;
|
|
ap->pio_mask = ATA_PIO4;
|
|
ap->flags |= ATA_FLAG_PIO_POLLING;
|
|
|
|
/* memory mapping voodoo */
|
|
ap->ioaddr.cmd_addr = mem + 0x10;
|
|
ap->ioaddr.altstatus_addr = mem + 0xe;
|
|
ap->ioaddr.ctl_addr = mem + 0xe;
|
|
|
|
/* start the port */
|
|
ata_sff_std_ports(&ap->ioaddr);
|
|
|
|
/* activate host */
|
|
ret = ata_host_activate(host, 0, NULL, IRQF_TRIGGER_RISING,
|
|
&palmld_sht);
|
|
if (ret)
|
|
goto err2;
|
|
|
|
return ret;
|
|
|
|
err2:
|
|
gpio_free_array(palmld_hdd_gpios, ARRAY_SIZE(palmld_hdd_gpios));
|
|
err1:
|
|
return ret;
|
|
}
|
|
|
|
static int palmld_pata_remove(struct platform_device *dev)
|
|
{
|
|
ata_platform_remove_one(dev);
|
|
|
|
/* power down the HDD */
|
|
gpio_set_value(GPIO_NR_PALMLD_IDE_PWEN, 0);
|
|
|
|
gpio_free_array(palmld_hdd_gpios, ARRAY_SIZE(palmld_hdd_gpios));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver palmld_pata_platform_driver = {
|
|
.driver = {
|
|
.name = DRV_NAME,
|
|
},
|
|
.probe = palmld_pata_probe,
|
|
.remove = palmld_pata_remove,
|
|
};
|
|
|
|
module_platform_driver(palmld_pata_platform_driver);
|
|
|
|
MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
|
|
MODULE_DESCRIPTION("PalmLD PATA driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:" DRV_NAME);
|