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for-5.1/libata-20190301

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Merge tag 'for-5.1/libata-20190301' of git://git.kernel.dk/linux-block

Pull libata updates from Jens Axboe:
 "Pretty quiet round: a few small fixes, comment typo, and most notably
  a low level driver for the PATA Buddha controller"

* tag 'for-5.1/libata-20190301' of git://git.kernel.dk/linux-block:
  ata: libahci: Only warn for AHCI_HFLAG_MULTI_MSI set when genuine custom irq handler implemented
  libata: fix a typo in comment
  ata: macio: Use of_node_name_eq for node name comparisons
  ata: pata_samsung_cf: simplify getting .driver_data
  ata: pata_platform: Add IRQF_SHARED to IRQ flags
  ata: pata_of_platform: Allow to use 16-bit wide data transfer
  ata: add Buddha PATA controller driver
This commit is contained in:
Linus Torvalds 2019-03-08 13:59:54 -08:00
commit 4221b807d1
10 changed files with 297 additions and 21 deletions
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12
drivers/ata/Kconfig
View File

@ -963,6 +963,18 @@ config PATA_GAYLE
If unsure, say N.
config PATA_BUDDHA
tristate "Buddha/Catweasel/X-Surf PATA support"
depends on ZORRO
help
This option enables support for the IDE interfaces
on the Buddha, Catweasel and X-Surf expansion boards
on the Zorro expansion bus. It supports up to two
interfaces on the Buddha, three on the Catweasel and
two on the X-Surf.
If unsure, say N.
config PATA_ISAPNP
tristate "ISA Plug and Play PATA support"
depends on ISAPNP

1
drivers/ata/Makefile
View File

@ -98,6 +98,7 @@ obj-$(CONFIG_PATA_WINBOND) += pata_sl82c105.o
obj-$(CONFIG_PATA_CMD640_PCI) += pata_cmd640.o
obj-$(CONFIG_PATA_FALCON) += pata_falcon.o
obj-$(CONFIG_PATA_GAYLE) += pata_gayle.o
obj-$(CONFIG_PATA_BUDDHA) += pata_buddha.o
obj-$(CONFIG_PATA_ISAPNP) += pata_isapnp.o
obj-$(CONFIG_PATA_IXP4XX_CF) += pata_ixp4xx_cf.o
obj-$(CONFIG_PATA_MPIIX) += pata_mpiix.o

3
drivers/ata/libahci.c
View File

@ -2599,7 +2599,8 @@ int ahci_host_activate(struct ata_host *host, struct scsi_host_template *sht)
int rc;
if (hpriv->flags & AHCI_HFLAG_MULTI_MSI) {
if (hpriv->irq_handler)
if (hpriv->irq_handler &&
hpriv->irq_handler != ahci_single_level_irq_intr)
dev_warn(host->dev,
"both AHCI_HFLAG_MULTI_MSI flag set and custom irq handler implemented\n");
if (!hpriv->get_irq_vector) {

2
drivers/ata/libata-scsi.c
View File

@ -2990,7 +2990,7 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc)
* This inconsistency confuses several controllers which
* perform PIO using DMA such as Intel AHCIs and sil3124/32.
* These controllers use actual number of transferred bytes to
* update DMA poitner and transfer of 4n+2 bytes make those
* update DMA pointer and transfer of 4n+2 bytes make those
* controller push DMA pointer by 4n+4 bytes because SATA data
* FISes are aligned to 4 bytes. This causes data corruption
* and buffer overrun.

257
drivers/ata/pata_buddha.c Normal file
View File

@ -0,0 +1,257 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Buddha, Catweasel and X-Surf PATA controller driver
*
* Copyright (c) 2018 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Based on buddha.c:
*
* Copyright (C) 1997, 2001 by Geert Uytterhoeven and others
*/
#include <linux/ata.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/libata.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/zorro.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_host.h>
#include <asm/amigahw.h>
#include <asm/amigaints.h>
#include <asm/ide.h>
#include <asm/setup.h>
#define DRV_NAME "pata_buddha"
#define DRV_VERSION "0.1.0"
#define BUDDHA_BASE1 0x800
#define BUDDHA_BASE2 0xa00
#define BUDDHA_BASE3 0xc00
#define XSURF_BASE1 0xb000 /* 2.5" interface */
#define XSURF_BASE2 0xd000 /* 3.5" interface */
#define BUDDHA_CONTROL 0x11a
#define BUDDHA_IRQ 0xf00
#define XSURF_IRQ 0x7e
#define BUDDHA_IRQ_MR 0xfc0 /* master interrupt enable */
enum {
BOARD_BUDDHA = 0,
BOARD_CATWEASEL,
BOARD_XSURF
};
static unsigned int buddha_bases[3] __initdata = {
BUDDHA_BASE1, BUDDHA_BASE2, BUDDHA_BASE3
};
static unsigned int xsurf_bases[2] __initdata = {
XSURF_BASE1, XSURF_BASE2
};
static struct scsi_host_template pata_buddha_sht = {
ATA_PIO_SHT(DRV_NAME),
};
/* FIXME: is this needed? */
static unsigned int pata_buddha_data_xfer(struct ata_queued_cmd *qc,
unsigned char *buf,
unsigned int buflen, int rw)
{
struct ata_device *dev = qc->dev;
struct ata_port *ap = dev->link->ap;
void __iomem *data_addr = ap->ioaddr.data_addr;
unsigned int words = buflen >> 1;
/* Transfer multiple of 2 bytes */
if (rw == READ)
raw_insw((u16 *)data_addr, (u16 *)buf, words);
else
raw_outsw((u16 *)data_addr, (u16 *)buf, words);
/* Transfer trailing byte, if any. */
if (unlikely(buflen & 0x01)) {
unsigned char pad[2] = { };
/* Point buf to the tail of buffer */
buf += buflen - 1;
if (rw == READ) {
raw_insw((u16 *)data_addr, (u16 *)pad, 1);
*buf = pad[0];
} else {
pad[0] = *buf;
raw_outsw((u16 *)data_addr, (u16 *)pad, 1);
}
words++;
}
return words << 1;
}
/*
* Provide our own set_mode() as we don't want to change anything that has
* already been configured..
*/
static int pata_buddha_set_mode(struct ata_link *link,
struct ata_device **unused)
{
struct ata_device *dev;
ata_for_each_dev(dev, link, ENABLED) {
/* We don't really care */
dev->pio_mode = dev->xfer_mode = XFER_PIO_0;
dev->xfer_shift = ATA_SHIFT_PIO;
dev->flags |= ATA_DFLAG_PIO;
ata_dev_info(dev, "configured for PIO\n");
}
return 0;
}
static bool pata_buddha_irq_check(struct ata_port *ap)
{
u8 ch;
ch = z_readb((unsigned long)ap->private_data);
return !!(ch & 0x80);
}
static void pata_xsurf_irq_clear(struct ata_port *ap)
{
z_writeb(0, (unsigned long)ap->private_data);
}
static struct ata_port_operations pata_buddha_ops = {
.inherits = &ata_sff_port_ops,
.sff_data_xfer = pata_buddha_data_xfer,
.sff_irq_check = pata_buddha_irq_check,
.cable_detect = ata_cable_unknown,
.set_mode = pata_buddha_set_mode,
};
static struct ata_port_operations pata_xsurf_ops = {
.inherits = &ata_sff_port_ops,
.sff_data_xfer = pata_buddha_data_xfer,
.sff_irq_check = pata_buddha_irq_check,
.sff_irq_clear = pata_xsurf_irq_clear,
.cable_detect = ata_cable_unknown,
.set_mode = pata_buddha_set_mode,
};
static int __init pata_buddha_init_one(void)
{
struct zorro_dev *z = NULL;
while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
static const char *board_name[]
= { "Buddha", "Catweasel", "X-Surf" };
struct ata_host *host;
void __iomem *buddha_board;
unsigned long board;
unsigned int type, nr_ports = 2;
int i;
if (z->id == ZORRO_PROD_INDIVIDUAL_COMPUTERS_BUDDHA) {
type = BOARD_BUDDHA;
} else if (z->id == ZORRO_PROD_INDIVIDUAL_COMPUTERS_CATWEASEL) {
type = BOARD_CATWEASEL;
nr_ports++;
} else if (z->id == ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF) {
type = BOARD_XSURF;
} else
continue;
dev_info(&z->dev, "%s IDE controller\n", board_name[type]);
board = z->resource.start;
if (type != BOARD_XSURF) {
if (!devm_request_mem_region(&z->dev,
board + BUDDHA_BASE1,
0x800, DRV_NAME))
continue;
} else {
if (!devm_request_mem_region(&z->dev,
board + XSURF_BASE1,
0x1000, DRV_NAME))
continue;
if (!devm_request_mem_region(&z->dev,
board + XSURF_BASE2,
0x1000, DRV_NAME))
continue;
}
/* allocate host */
host = ata_host_alloc(&z->dev, nr_ports);
if (!host)
continue;
buddha_board = ZTWO_VADDR(board);
/* enable the board IRQ on Buddha/Catweasel */
if (type != BOARD_XSURF)
z_writeb(0, buddha_board + BUDDHA_IRQ_MR);
for (i = 0; i < nr_ports; i++) {
struct ata_port *ap = host->ports[i];
void __iomem *base, *irqport;
unsigned long ctl = 0;
if (type != BOARD_XSURF) {
ap->ops = &pata_buddha_ops;
base = buddha_board + buddha_bases[i];
ctl = BUDDHA_CONTROL;
irqport = buddha_board + BUDDHA_IRQ + i * 0x40;
} else {
ap->ops = &pata_xsurf_ops;
base = buddha_board + xsurf_bases[i];
/* X-Surf has no CS1* (Control/AltStat) */
irqport = buddha_board + XSURF_IRQ;
}
ap->pio_mask = ATA_PIO4;
ap->flags |= ATA_FLAG_SLAVE_POSS | ATA_FLAG_NO_IORDY;
ap->ioaddr.data_addr = base;
ap->ioaddr.error_addr = base + 2 + 1 * 4;
ap->ioaddr.feature_addr = base + 2 + 1 * 4;
ap->ioaddr.nsect_addr = base + 2 + 2 * 4;
ap->ioaddr.lbal_addr = base + 2 + 3 * 4;
ap->ioaddr.lbam_addr = base + 2 + 4 * 4;
ap->ioaddr.lbah_addr = base + 2 + 5 * 4;
ap->ioaddr.device_addr = base + 2 + 6 * 4;
ap->ioaddr.status_addr = base + 2 + 7 * 4;
ap->ioaddr.command_addr = base + 2 + 7 * 4;
if (ctl) {
ap->ioaddr.altstatus_addr = base + ctl;
ap->ioaddr.ctl_addr = base + ctl;
}
ap->private_data = (void *)irqport;
ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", board,
ctl ? board + buddha_bases[i] + ctl : 0);
}
ata_host_activate(host, IRQ_AMIGA_PORTS, ata_sff_interrupt,
IRQF_SHARED, &pata_buddha_sht);
}
return 0;
}
module_init(pata_buddha_init_one);
MODULE_AUTHOR("Bartlomiej Zolnierkiewicz");
MODULE_DESCRIPTION("low-level driver for Buddha/Catweasel/X-Surf PATA");
MODULE_LICENSE("GPL v2");
MODULE_VERSION(DRV_VERSION);

2
drivers/ata/pata_macio.c
View File

@ -954,7 +954,7 @@ static void pata_macio_invariants(struct pata_macio_priv *priv)
priv->kind = controller_k2_ata6;
priv->timings = pata_macio_kauai_timings;
} else if (of_device_is_compatible(priv->node, "keylargo-ata")) {
if (strcmp(priv->node->name, "ata-4") == 0) {
if (of_node_name_eq(priv->node, "ata-4")) {
priv->kind = controller_kl_ata4;
priv->timings = pata_macio_kl66_timings;
} else {

6
drivers/ata/pata_of_platform.c
View File

@ -32,6 +32,7 @@ static int pata_of_platform_probe(struct platform_device *ofdev)
unsigned int reg_shift = 0;
int pio_mode = 0;
int pio_mask;
bool use16bit;
ret = of_address_to_resource(dn, 0, &io_res);
if (ret) {
@ -60,11 +61,14 @@ static int pata_of_platform_probe(struct platform_device *ofdev)
dev_info(&ofdev->dev, "pio-mode unspecified, assuming PIO0\n");
}
use16bit = of_property_read_bool(dn, "ata-generic,use16bit");
pio_mask = 1 << pio_mode;
pio_mask |= (1 << pio_mode) - 1;
return __pata_platform_probe(&ofdev->dev, &io_res, &ctl_res, irq_res,
reg_shift, pio_mask, &pata_platform_sht);
reg_shift, pio_mask, &pata_platform_sht,
use16bit);
}
static const struct of_device_id pata_of_platform_match[] = {

24
drivers/ata/pata_platform.c
View File

@ -47,13 +47,6 @@ static struct scsi_host_template pata_platform_sht = {
ATA_PIO_SHT(DRV_NAME),
};
static struct ata_port_operations pata_platform_port_ops = {
.inherits = &ata_sff_port_ops,
.sff_data_xfer = ata_sff_data_xfer32,
.cable_detect = ata_cable_unknown,
.set_mode = pata_platform_set_mode,
};
static void pata_platform_setup_port(struct ata_ioports *ioaddr,
unsigned int shift)
{
@ -79,6 +72,7 @@ static void pata_platform_setup_port(struct ata_ioports *ioaddr,
* @ioport_shift: I/O port shift
* @__pio_mask: PIO mask
* @sht: scsi_host_template to use when registering
* @use16bit: Flag to indicate 16-bit IO instead of 32-bit
*
* Register a platform bus IDE interface. Such interfaces are PIO and we
* assume do not support IRQ sharing.
@ -101,7 +95,7 @@ static void pata_platform_setup_port(struct ata_ioports *ioaddr,
int __pata_platform_probe(struct device *dev, struct resource *io_res,
struct resource *ctl_res, struct resource *irq_res,
unsigned int ioport_shift, int __pio_mask,
struct scsi_host_template *sht)
struct scsi_host_template *sht, bool use16bit)
{
struct ata_host *host;
struct ata_port *ap;
@ -120,7 +114,7 @@ int __pata_platform_probe(struct device *dev, struct resource *io_res,
*/
if (irq_res && irq_res->start > 0) {
irq = irq_res->start;
irq_flags = irq_res->flags & IRQF_TRIGGER_MASK;
irq_flags = (irq_res->flags & IRQF_TRIGGER_MASK) | IRQF_SHARED;
}
/*
@ -131,7 +125,15 @@ int __pata_platform_probe(struct device *dev, struct resource *io_res,
return -ENOMEM;
ap = host->ports[0];
ap->ops = &pata_platform_port_ops;
ap->ops = devm_kzalloc(dev, sizeof(*ap->ops), GFP_KERNEL);
ap->ops->inherits = &ata_sff_port_ops;
ap->ops->cable_detect = ata_cable_unknown;
ap->ops->set_mode = pata_platform_set_mode;
if (use16bit)
ap->ops->sff_data_xfer = ata_sff_data_xfer;
else
ap->ops->sff_data_xfer = ata_sff_data_xfer32;
ap->pio_mask = __pio_mask;
ap->flags |= ATA_FLAG_SLAVE_POSS;
@ -218,7 +220,7 @@ static int pata_platform_probe(struct platform_device *pdev)
return __pata_platform_probe(&pdev->dev, io_res, ctl_res, irq_res,
pp_info ? pp_info->ioport_shift : 0,
pio_mask, &pata_platform_sht);
pio_mask, &pata_platform_sht, false);
}
static struct platform_driver pata_platform_driver = {

8
drivers/ata/pata_samsung_cf.c
View File

@ -609,17 +609,15 @@ static int __exit pata_s3c_remove(struct platform_device *pdev)
#ifdef CONFIG_PM_SLEEP
static int pata_s3c_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct ata_host *host = platform_get_drvdata(pdev);
struct ata_host *host = dev_get_drvdata(dev);
return ata_host_suspend(host, PMSG_SUSPEND);
}
static int pata_s3c_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct ata_host *host = platform_get_drvdata(pdev);
struct s3c_ide_platdata *pdata = dev_get_platdata(&pdev->dev);
struct ata_host *host = dev_get_drvdata(dev);
struct s3c_ide_platdata *pdata = dev_get_platdata(dev);
struct s3c_ide_info *info = host->private_data;
pata_s3c_hwinit(info, pdata);

3
include/linux/ata_platform.h
View File

@ -19,7 +19,8 @@ extern int __pata_platform_probe(struct device *dev,
struct resource *irq_res,
unsigned int ioport_shift,
int __pio_mask,
struct scsi_host_template *sht);
struct scsi_host_template *sht,
bool use16bit);
/*
* Marvell SATA private data