* [PATCHv4 2/3] x86: Add support for IDE on the legacy I/O ports
2014-04-07 10:01 [PATCHv4 1/3] common: Allow for I/O mapped I/O michel
@ 2014-04-07 10:01 ` michel
2014-04-07 10:01 ` [PATCHv4 3/3] x86: ns16550: Rework driver to allow for x86 I/O space michel
2014-04-08 6:19 ` [PATCHv4 1/3] common: Allow for I/O mapped I/O Sascha Hauer
2 siblings, 0 replies; 4+ messages in thread
From: michel @ 2014-04-07 10:01 UTC (permalink / raw)
To: barebox
From: Michel Stam <m.stam@fugro.nl>
Signed-off-by: Michel Stam <michel@reverze.net>
---
arch/x86/boards/x86_generic/Makefile | 3 +
arch/x86/boards/x86_generic/disk_bios_drive.c | 46 +++++++++++
arch/x86/boards/x86_generic/envsector.h | 36 ++++++++
arch/x86/boards/x86_generic/generic_pc.c | 53 +------------
arch/x86/boards/x86_generic/intf_platform_ide.c | 93 +++++++++++++++++++++
arch/x86/boards/x86_generic/serial_ns16550.c | 47 +++++++++++
drivers/ata/ide-sff.c | 98 +++++++++++++++++++----
drivers/ata/intf_platform_ide.c | 37 ++++++++-
include/ata_drive.h | 1 +
9 files changed, 341 insertions(+), 73 deletions(-)
create mode 100644 arch/x86/boards/x86_generic/disk_bios_drive.c
create mode 100644 arch/x86/boards/x86_generic/envsector.h
create mode 100644 arch/x86/boards/x86_generic/intf_platform_ide.c
create mode 100644 arch/x86/boards/x86_generic/serial_ns16550.c
diff --git a/arch/x86/boards/x86_generic/Makefile b/arch/x86/boards/x86_generic/Makefile
index 248240d..fca707d 100644
--- a/arch/x86/boards/x86_generic/Makefile
+++ b/arch/x86/boards/x86_generic/Makefile
@@ -1 +1,4 @@
obj-y += generic_pc.o
+obj-$(CONFIG_DISK_INTF_PLATFORM_IDE) += intf_platform_ide.o
+obj-$(CONFIG_DISK_BIOS) += disk_bios_drive.o
+obj-$(CONFIG_DRIVER_SERIAL_NS16550) += serial_ns16550.o
diff --git a/arch/x86/boards/x86_generic/disk_bios_drive.c b/arch/x86/boards/x86_generic/disk_bios_drive.c
new file mode 100644
index 0000000..f33f48c
--- /dev/null
+++ b/arch/x86/boards/x86_generic/disk_bios_drive.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2009 Juergen Beisert, Pengutronix
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ *
+ */
+
+/**
+ * @file
+ * @brief Generic PC support for the BIOS disk interface
+ */
+
+#include <common.h>
+#include <driver.h>
+#include <init.h>
+#include <linux/err.h>
+#include "envsector.h"
+
+static int bios_disk_init(void)
+{
+ struct cdev *cdev;
+
+ add_generic_device("biosdrive", DEVICE_ID_DYNAMIC, NULL, 0, 0,
+ IORESOURCE_MEM, NULL);
+
+ if (pers_env_size != PATCH_AREA_PERS_SIZE_UNUSED) {
+ cdev = devfs_add_partition("biosdisk0",
+ pers_env_storage * 512,
+ (unsigned)pers_env_size * 512,
+ DEVFS_PARTITION_FIXED, "env0");
+ printf("Partition: %ld\n", IS_ERR(cdev) ? PTR_ERR(cdev) : 0);
+ } else
+ printf("No persistent storage defined\n");
+
+ return 0;
+}
+device_initcall(bios_disk_init);
diff --git a/arch/x86/boards/x86_generic/envsector.h b/arch/x86/boards/x86_generic/envsector.h
new file mode 100644
index 0000000..86511c8
--- /dev/null
+++ b/arch/x86/boards/x86_generic/envsector.h
@@ -0,0 +1,36 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ *
+ */
+
+/**
+ * @file
+ * @brief x86 Generic PC common definitions
+ */
+#ifndef __X86_ENVSECTOR_H
+#define __ENVSECTOR_H
+
+/*
+ * These datas are from the MBR, created by the linker and filled by the
+ * setup tool while installing barebox on the disk drive
+ */
+extern uint64_t pers_env_storage;
+extern uint16_t pers_env_size;
+extern uint8_t pers_env_drive;
+
+/**
+ * Persistent environment "not used" marker.
+ * Note: Must be in accordance to the value the tool "setup_mbr" writes.
+ */
+#define PATCH_AREA_PERS_SIZE_UNUSED 0x000
+
+#endif
diff --git a/arch/x86/boards/x86_generic/generic_pc.c b/arch/x86/boards/x86_generic/generic_pc.c
index 74a7224..5560efc 100644
--- a/arch/x86/boards/x86_generic/generic_pc.c
+++ b/arch/x86/boards/x86_generic/generic_pc.c
@@ -24,67 +24,16 @@
#include <driver.h>
#include <init.h>
#include <asm/syslib.h>
-#include <ns16550.h>
#include <linux/err.h>
-/*
- * These datas are from the MBR, created by the linker and filled by the
- * setup tool while installing barebox on the disk drive
- */
-extern uint64_t pers_env_storage;
-extern uint16_t pers_env_size;
-extern uint8_t pers_env_drive;
-
-/**
- * Persistent environment "not used" marker.
- * Note: Must be in accordance to the value the tool "setup_mbr" writes.
- */
-#define PATCH_AREA_PERS_SIZE_UNUSED 0x000
-
static int devices_init(void)
{
- struct cdev *cdev;
-
/* extended memory only */
add_mem_device("ram0", 0x0, bios_get_memsize() << 10,
IORESOURCE_MEM_WRITEABLE);
- add_generic_device("biosdrive", DEVICE_ID_DYNAMIC, NULL, 0, 0, IORESOURCE_MEM,
- NULL);
-
- if (pers_env_size != PATCH_AREA_PERS_SIZE_UNUSED) {
- cdev = devfs_add_partition("biosdisk0",
- pers_env_storage * 512,
- (unsigned)pers_env_size * 512,
- DEVFS_PARTITION_FIXED, "env0");
- printf("Partition: %ld\n", IS_ERR(cdev) ? PTR_ERR(cdev) : 0);
- } else
- printf("No persistent storage defined\n");
-
- return 0;
-}
-device_initcall(devices_init);
-
-#ifdef CONFIG_DRIVER_SERIAL_NS16550
-
-static struct NS16550_plat serial_plat = {
- .clock = 1843200,
- .reg_read = x86_uart_read,
- .reg_write = x86_uart_write,
-};
-
-static int pc_console_init(void)
-{
- barebox_set_model("X86 generic barebox");
- barebox_set_hostname("x86");
-
- /* Register the serial port */
- add_ns16550_device(DEVICE_ID_DYNAMIC, 0x3f8, 8, 0, &serial_plat);
-
return 0;
}
-console_initcall(pc_console_init);
-
-#endif
+device_initcall(devices_init);
/** @page generic_pc Generic PC based bootloader
diff --git a/arch/x86/boards/x86_generic/intf_platform_ide.c b/arch/x86/boards/x86_generic/intf_platform_ide.c
new file mode 100644
index 0000000..18a2620
--- /dev/null
+++ b/arch/x86/boards/x86_generic/intf_platform_ide.c
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2014 Juergen Beisert, Pengutronix, Michel Stam,
+ * Fugro Intersite
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ *
+ */
+
+/**
+ * @file
+ * @brief Generic PC support for the IDE platform driver
+ */
+
+#include <common.h>
+#include <driver.h>
+#include <init.h>
+#include <linux/err.h>
+#include <platform_ide.h>
+#include "envsector.h"
+
+static struct ide_port_info ide_plat = {
+ .ioport_shift = 0,
+ .dataif_be = 0,
+};
+
+static struct resource primary_ide_resources[] = {
+ {
+ .name = "base",
+ .start = 0x1f0,
+ .end = 0x1f7,
+ .flags = IORESOURCE_IO
+ },
+ {
+ .name = "alt",
+ .start = 0x3f6,
+ .end = 0x3f7,
+ .flags = IORESOURCE_IO
+ }
+};
+
+static struct resource secondary_ide_resources[] = {
+ {
+ .name = "base",
+ .start = 0x170,
+ .end = 0x177,
+ .flags = IORESOURCE_IO
+ },
+};
+
+static struct device_d primary_ide_device = {
+ .name = "ide_intf",
+ .id = 0,
+ .platform_data = &ide_plat,
+ .resource = primary_ide_resources,
+ .num_resources = ARRAY_SIZE(primary_ide_resources),
+};
+
+static struct device_d secondary_ide_device = {
+ .name = "ide_intf",
+ .id = 1,
+ .platform_data = &ide_plat,
+ .resource = secondary_ide_resources,
+ .num_resources = ARRAY_SIZE(secondary_ide_resources),
+};
+
+static int platform_ide_init(void)
+{
+ struct cdev *cdev;
+
+ platform_device_register(&primary_ide_device);
+ platform_device_register(&secondary_ide_device);
+
+ if (pers_env_size != PATCH_AREA_PERS_SIZE_UNUSED) {
+ cdev = devfs_add_partition("ata0",
+ pers_env_storage * 512,
+ (unsigned)pers_env_size * 512,
+ DEVFS_PARTITION_FIXED, "env0");
+ printf("Partition: %ld\n", IS_ERR(cdev) ? PTR_ERR(cdev) : 0);
+ } else
+ printf("No persistent storage defined\n");
+
+ return 0;
+}
+device_initcall(platform_ide_init);
diff --git a/arch/x86/boards/x86_generic/serial_ns16550.c b/arch/x86/boards/x86_generic/serial_ns16550.c
new file mode 100644
index 0000000..cae61df
--- /dev/null
+++ b/arch/x86/boards/x86_generic/serial_ns16550.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2009 Juergen Beisert, Pengutronix, Michel Stam,
+ * Fugro Intersite
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ *
+ */
+
+/**
+ * @file
+ * @brief Generic PC support to let barebox acting as a boot loader
+ */
+
+#include <common.h>
+#include <types.h>
+#include <driver.h>
+#include <init.h>
+#include <asm/syslib.h>
+#include <ns16550.h>
+#include <linux/err.h>
+
+static struct NS16550_plat serial_plat = {
+ .clock = 1843200,
+ .reg_read = x86_uart_read,
+ .reg_write = x86_uart_write,
+};
+
+static int pc_console_init(void)
+{
+ barebox_set_model("X86 generic barebox");
+ barebox_set_hostname("x86");
+
+ /* Register the serial port */
+ add_ns16550_device(DEVICE_ID_DYNAMIC, 0x3f8, 8, 0, &serial_plat);
+
+ return 0;
+}
+console_initcall(pc_console_init);
diff --git a/drivers/ata/ide-sff.c b/drivers/ata/ide-sff.c
index 3d5932e..a8f2b26 100644
--- a/drivers/ata/ide-sff.c
+++ b/drivers/ata/ide-sff.c
@@ -15,13 +15,74 @@
#define DISK_SLAVE 1
/**
+ * Read a byte from the ATA controller
+ * @param ide IDE port structure
+ * @param addr Register adress
+ * @return Register's content
+ */
+static inline uint8_t ata_rd_byte(struct ide_port *ide, void __iomem *addr)
+{
+ if (ide->io.mmio)
+ return readb(addr);
+ else
+ return (uint8_t) inb((int) addr);
+}
+
+/**
+ * Write a byte to the ATA controller
+ * @param ide IDE port structure
+ * @param value Value to write
+ * @param addr Register adress
+ * @return Register's content
+ */
+static inline void ata_wr_byte(struct ide_port *ide, uint8_t value,
+ void __iomem *addr)
+{
+ if (ide->io.mmio)
+ writeb(value, addr);
+ else
+ outb(value, (int) addr);
+}
+
+/**
+ * Read a word from the ATA controller
+ * @param ide IDE port structure
+ * @param addr Register adress
+ * @return Register's content
+ */
+static inline uint16_t ata_rd_word(struct ide_port *ide,
+ void __iomem *addr)
+{
+ if (ide->io.mmio)
+ return readw(addr);
+ else
+ return (uint16_t) inw((int) addr);
+}
+
+/**
+ * Write a word to the ATA controller
+ * @param ide IDE port structure
+ * @param value Value to write
+ * @param addr Register adress
+ * @return Register's content
+ */
+static inline void ata_wr_word(struct ide_port *ide, uint16_t value,
+ void __iomem *addr)
+{
+ if (ide->io.mmio)
+ writew(value, addr);
+ else
+ outw(value, (int) addr);
+}
+
+/**
* Read the status register of the ATA drive
* @param io Register file
* @return Register's content
*/
static uint8_t ata_rd_status(struct ide_port *ide)
{
- return readb(ide->io.status_addr);
+ return ata_rd_byte(ide, ide->io.status_addr);
}
/**
@@ -83,12 +144,13 @@ static int ata_set_lba_sector(struct ide_port *ide, unsigned drive, uint64_t num
if (num > 0x0FFFFFFF || drive > 1)
return -EINVAL;
- writeb(0xA0 | LBA_FLAG | drive << 4 | num >> 24, ide->io.device_addr);
- writeb(0x00, ide->io.error_addr);
- writeb(0x01, ide->io.nsect_addr);
- writeb(num, ide->io.lbal_addr); /* 0 ... 7 */
- writeb(num >> 8, ide->io.lbam_addr); /* 8 ... 15 */
- writeb(num >> 16, ide->io.lbah_addr); /* 16 ... 23 */
+ ata_wr_byte(ide, 0xA0 | LBA_FLAG | drive << 4 | num >> 24,
+ ide->io.device_addr);
+ ata_wr_byte(ide, 0x00, ide->io.error_addr);
+ ata_wr_byte(ide, 0x01, ide->io.nsect_addr);
+ ata_wr_byte(ide, num, ide->io.lbal_addr); /* 0 ... 7 */
+ ata_wr_byte(ide, num >> 8, ide->io.lbam_addr); /* 8 ... 15 */
+ ata_wr_byte(ide, num >> 16, ide->io.lbah_addr); /* 16 ... 23 */
return 0;
}
@@ -107,7 +169,7 @@ static int ata_wr_cmd(struct ide_port *ide, uint8_t cmd)
if (rc != 0)
return rc;
- writeb(cmd, ide->io.command_addr);
+ ata_wr_byte(ide, cmd, ide->io.command_addr);
return 0;
}
@@ -118,7 +180,7 @@ static int ata_wr_cmd(struct ide_port *ide, uint8_t cmd)
*/
static void ata_wr_dev_ctrl(struct ide_port *ide, uint8_t val)
{
- writeb(val, ide->io.ctl_addr);
+ ata_wr_byte(ide, val, ide->io.ctl_addr);
}
/**
@@ -133,10 +195,10 @@ static void ata_rd_sector(struct ide_port *ide, void *buf)
if (ide->io.dataif_be) {
for (; u > 0; u--)
- *b++ = be16_to_cpu(readw(ide->io.data_addr));
+ *b++ = be16_to_cpu(ata_rd_word(ide, ide->io.data_addr));
} else {
for (; u > 0; u--)
- *b++ = le16_to_cpu(readw(ide->io.data_addr));
+ *b++ = le16_to_cpu(ata_rd_word(ide, ide->io.data_addr));
}
}
@@ -152,10 +214,10 @@ static void ata_wr_sector(struct ide_port *ide, const void *buf)
if (ide->io.dataif_be) {
for (; u > 0; u--)
- writew(cpu_to_be16(*b++), ide->io.data_addr);
+ ata_wr_word(ide, cpu_to_be16(*b++), ide->io.data_addr);
} else {
for (; u > 0; u--)
- writew(cpu_to_le16(*b++), ide->io.data_addr);
+ ata_wr_word(ide, cpu_to_le16(*b++), ide->io.data_addr);
}
}
@@ -169,10 +231,10 @@ static int ide_read_id(struct ata_port *port, void *buf)
struct ide_port *ide = to_ata_drive_access(port);
int rc;
- writeb(0xA0, ide->io.device_addr); /* FIXME drive */
- writeb(0x00, ide->io.lbal_addr);
- writeb(0x00, ide->io.lbam_addr);
- writeb(0x00, ide->io.lbah_addr);
+ ata_wr_byte(ide, 0xA0, ide->io.device_addr); /* FIXME drive */
+ ata_wr_byte(ide, 0x00, ide->io.lbal_addr);
+ ata_wr_byte(ide, 0x00, ide->io.lbam_addr);
+ ata_wr_byte(ide, 0x00, ide->io.lbah_addr);
rc = ata_wr_cmd(ide, ATA_CMD_ID_ATA);
if (rc != 0)
@@ -327,6 +389,8 @@ int ide_port_register(struct ide_port *ide)
ide->port.ops = &ide_ops;
ret = ata_port_register(&ide->port);
+ if (!ret)
+ ata_port_detect(&ide->port);
if (ret)
free(ide);
diff --git a/drivers/ata/intf_platform_ide.c b/drivers/ata/intf_platform_ide.c
index 8ae0f05..ecc2546 100644
--- a/drivers/ata/intf_platform_ide.c
+++ b/drivers/ata/intf_platform_ide.c
@@ -82,15 +82,46 @@ static int platform_ide_probe(struct device_d *dev)
struct ide_port_info *pdata = dev->platform_data;
struct ide_port *ide;
void *reg_base, *alt_base;
+ struct resource *reg, *alt;
+ int mmio;
if (pdata == NULL) {
dev_err(dev, "No platform data. Cannot continue\n");
return -EINVAL;
}
+ alt = NULL;
+ reg = dev_get_resource(dev, IORESOURCE_MEM, 0);
+ mmio = (reg != NULL);
+ if (reg != NULL) {
+ reg = request_iomem_region(dev_name(dev), reg->start,
+ reg->end);
+ alt = dev_get_resource(dev, IORESOURCE_MEM, 1);
+ if (alt != NULL)
+ alt = request_iomem_region(dev_name(dev), alt->start,
+ alt->end);
+ } else {
+ reg = dev_get_resource(dev, IORESOURCE_IO, 0);
+ if (reg != NULL) {
+ reg = request_ioport_region(dev_name(dev), reg->start,
+ reg->end);
+ alt = dev_get_resource(dev, IORESOURCE_IO, 1);
+ if (alt != NULL)
+ alt = request_ioport_region(dev_name(dev),
+ alt->start,
+ alt->end);
+ }
+ }
+
+ reg_base = (reg != NULL ? (void __force __iomem *) reg->start : NULL);
+ alt_base = (alt != NULL ? (void __force __iomem *) alt->start : NULL);
+
+ if (!reg_base)
+ return -ENODEV;
+
ide = xzalloc(sizeof(*ide));
- reg_base = dev_request_mem_region(dev, 0);
- alt_base = dev_request_mem_region(dev, 1);
+ ide->io.mmio = mmio;
+
platform_ide_setup_port(reg_base, alt_base, &ide->io, pdata->ioport_shift);
ide->io.reset = pdata->reset;
ide->io.dataif_be = pdata->dataif_be;
@@ -125,6 +156,4 @@ device_platform_driver(platform_ide_driver);
*
* This driver does not change any access timings due to the fact it has no idea
* how to do so. So, do not expect an impressive data throughput.
- *
- * @todo Support also the IO port access method, the x86 architecture is using
*/
diff --git a/include/ata_drive.h b/include/ata_drive.h
index 6d6cca4..44073cb 100644
--- a/include/ata_drive.h
+++ b/include/ata_drive.h
@@ -119,6 +119,7 @@ struct ata_ioports {
/* hard reset line handling */
void (*reset)(int); /* true: assert reset, false: de-assert reset */
int dataif_be; /* true if 16 bit data register is big endian */
+ int mmio; /* true if memory-mapped io */
};
struct ata_port;
--
1.7.1
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^ permalink raw reply [flat|nested] 4+ messages in thread* [PATCHv4 3/3] x86: ns16550: Rework driver to allow for x86 I/O space
2014-04-07 10:01 [PATCHv4 1/3] common: Allow for I/O mapped I/O michel
2014-04-07 10:01 ` [PATCHv4 2/3] x86: Add support for IDE on the legacy I/O ports michel
@ 2014-04-07 10:01 ` michel
2014-04-08 6:19 ` [PATCHv4 1/3] common: Allow for I/O mapped I/O Sascha Hauer
2 siblings, 0 replies; 4+ messages in thread
From: michel @ 2014-04-07 10:01 UTC (permalink / raw)
To: barebox
From: Michel Stam <m.stam@fugro.nl>
The current implementation fakes a memory-mapped I/O device
at 0x3f8 and 0x2f8, then uses platform read/write functions
to do the actual reading and writing. These platform functions
only exist for the x86 platform; better to move the I/O
routines into the driver and have the driver request I/O ports
using request_ioport_region.
Signed-off-by: Michel Stam <michel@reverze.net>
---
arch/arm/boards/eukrea_cpuimx27/eukrea_cpuimx27.c | 3 +-
arch/arm/mach-mvebu/armada-370-xp.c | 3 +-
arch/arm/mach-mvebu/kirkwood.c | 3 +-
arch/arm/mach-socfpga/xload.c | 4 +-
arch/arm/mach-tegra/tegra20.c | 2 +-
arch/mips/boards/dlink-dir-320/serial.c | 2 +-
arch/mips/boards/loongson-ls1b/serial.c | 2 +-
arch/mips/mach-ar231x/ar231x.c | 4 +-
arch/openrisc/boards/generic/generic.c | 3 +-
arch/ppc/boards/freescale-p1022ds/p1022ds.c | 2 +-
arch/ppc/boards/freescale-p2020rdb/p2020rdb.c | 3 +-
arch/ppc/boards/geip-da923rc/da923rc.c | 3 +-
arch/x86/boards/x86_generic/serial_ns16550.c | 7 +-
arch/x86/include/asm/syslib.h | 3 -
arch/x86/mach-i386/Makefile | 1 -
arch/x86/mach-i386/generic.c | 34 ------
drivers/serial/serial_ns16550.c | 123 ++++++++++++++++++---
include/driver.h | 2 +-
include/ns16550.h | 11 +--
19 files changed, 134 insertions(+), 81 deletions(-)
delete mode 100644 arch/x86/mach-i386/generic.c
diff --git a/arch/arm/boards/eukrea_cpuimx27/eukrea_cpuimx27.c b/arch/arm/boards/eukrea_cpuimx27/eukrea_cpuimx27.c
index e2ad1c8..31422e6 100644
--- a/arch/arm/boards/eukrea_cpuimx27/eukrea_cpuimx27.c
+++ b/arch/arm/boards/eukrea_cpuimx27/eukrea_cpuimx27.c
@@ -223,7 +223,8 @@ static int eukrea_cpuimx27_console_init(void)
imx27_setup_weimcs(3, 0x0000D603, 0x0D1D0D01, 0x00D20000);
#ifdef CONFIG_DRIVER_SERIAL_NS16550
add_ns16550_device(DEVICE_ID_DYNAMIC, MX27_CS3_BASE_ADDR + QUART_OFFSET, 0xf,
- IORESOURCE_MEM_16BIT, &quad_uart_serial_plat);
+ IORESOURCE_MEM | IORESOURCE_MEM_16BIT,
+ &quad_uart_serial_plat);
#endif
return 0;
}
diff --git a/arch/arm/mach-mvebu/armada-370-xp.c b/arch/arm/mach-mvebu/armada-370-xp.c
index 776b4c0..209be0b 100644
--- a/arch/arm/mach-mvebu/armada-370-xp.c
+++ b/arch/arm/mach-mvebu/armada-370-xp.c
@@ -60,7 +60,8 @@ static int armada_370_xp_add_uart(void)
uart_plat.clock = clk_get_rate(tclk);
if (!add_ns16550_device(DEVICE_ID_DYNAMIC,
(unsigned int)CONSOLE_UART_BASE, 32,
- IORESOURCE_MEM_32BIT, &uart_plat))
+ IORESOURCE_MEM | IORESOURCE_MEM_32BIT,
+ &uart_plat))
return -ENODEV;
return 0;
}
diff --git a/arch/arm/mach-mvebu/kirkwood.c b/arch/arm/mach-mvebu/kirkwood.c
index 1284220..c79d130 100644
--- a/arch/arm/mach-mvebu/kirkwood.c
+++ b/arch/arm/mach-mvebu/kirkwood.c
@@ -58,7 +58,8 @@ static int kirkwood_add_uart(void)
uart_plat.clock = clk_get_rate(tclk);
if (!add_ns16550_device(DEVICE_ID_DYNAMIC,
(unsigned int)CONSOLE_UART_BASE, 32,
- IORESOURCE_MEM_32BIT, &uart_plat))
+ IORESOURCE_MEM | IORESOURCE_MEM_32BIT,
+ &uart_plat))
return -ENODEV;
return 0;
}
diff --git a/arch/arm/mach-socfpga/xload.c b/arch/arm/mach-socfpga/xload.c
index 0b99db0..6586ada 100644
--- a/arch/arm/mach-socfpga/xload.c
+++ b/arch/arm/mach-socfpga/xload.c
@@ -45,8 +45,8 @@ static void socfpga_uart_init(void)
clks[uart] = clk_fixed("uart", 100000000);
clkdev_add_physbase(clks[uart], CYCLONE5_UART0_ADDRESS, NULL);
clkdev_add_physbase(clks[uart], CYCLONE5_UART1_ADDRESS, NULL);
- add_ns16550_device(0, 0xffc02000, 1024, IORESOURCE_MEM_8BIT,
- &uart_pdata);
+ add_ns16550_device(0, 0xffc02000, 1024, IORESOURCE_MEM |
+ IORESOURCE_MEM_8BIT, &uart_pdata);
}
static void socfpga_timer_init(void)
diff --git a/arch/arm/mach-tegra/tegra20.c b/arch/arm/mach-tegra/tegra20.c
index cc2d748..bdd7960 100644
--- a/arch/arm/mach-tegra/tegra20.c
+++ b/arch/arm/mach-tegra/tegra20.c
@@ -50,7 +50,7 @@ static int tegra20_add_debug_console(void)
return -ENODEV;
add_ns16550_device(DEVICE_ID_DYNAMIC, base, 8 << debug_uart.shift,
- IORESOURCE_MEM_8BIT, &debug_uart);
+ IORESOURCE_MEM | IORESOURCE_MEM_8BIT, &debug_uart);
return 0;
}
diff --git a/arch/mips/boards/dlink-dir-320/serial.c b/arch/mips/boards/dlink-dir-320/serial.c
index bddb683..eb87379 100644
--- a/arch/mips/boards/dlink-dir-320/serial.c
+++ b/arch/mips/boards/dlink-dir-320/serial.c
@@ -36,7 +36,7 @@ static int dir320_console_init(void)
/* Register the serial port */
add_ns16550_device(DEVICE_ID_DYNAMIC, DEBUG_LL_UART_ADDR, 8,
- IORESOURCE_MEM_8BIT, &serial_plat);
+ IORESOURCE_MEM | IORESOURCE_MEM_8BIT, &serial_plat);
return 0;
}
diff --git a/arch/mips/boards/loongson-ls1b/serial.c b/arch/mips/boards/loongson-ls1b/serial.c
index d8e0f7c..7159ab7 100644
--- a/arch/mips/boards/loongson-ls1b/serial.c
+++ b/arch/mips/boards/loongson-ls1b/serial.c
@@ -15,7 +15,7 @@ static int console_init(void)
barebox_set_hostname("ls1b");
add_ns16550_device(DEVICE_ID_DYNAMIC, KSEG1ADDR(LS1X_UART2_BASE),
- 8, IORESOURCE_MEM_8BIT, &serial_plat);
+ 8, IORESOURCE_MEM | IORESOURCE_MEM_8BIT, &serial_plat);
return 0;
}
diff --git a/arch/mips/mach-ar231x/ar231x.c b/arch/mips/mach-ar231x/ar231x.c
index ca912bf..f714a11 100644
--- a/arch/mips/mach-ar231x/ar231x.c
+++ b/arch/mips/mach-ar231x/ar231x.c
@@ -189,7 +189,9 @@ static int ar2312_console_init(void)
/* Register the serial port */
serial_plat.clock = ar2312_sys_frequency();
add_ns16550_device(DEVICE_ID_DYNAMIC, KSEG1ADDR(AR2312_UART0),
- 8 << AR2312_UART_SHIFT, IORESOURCE_MEM_8BIT, &serial_plat);
+ 8 << AR2312_UART_SHIFT,
+ IORESOURCE_MEM | IORESOURCE_MEM_8BIT,
+ &serial_plat);
return 0;
}
console_initcall(ar2312_console_init);
diff --git a/arch/openrisc/boards/generic/generic.c b/arch/openrisc/boards/generic/generic.c
index 290e05c..9f68007 100644
--- a/arch/openrisc/boards/generic/generic.c
+++ b/arch/openrisc/boards/generic/generic.c
@@ -15,7 +15,8 @@ static int openrisc_console_init(void)
barebox_set_hostname("or1k");
/* Register the serial port */
- add_ns16550_device(DEVICE_ID_DYNAMIC, OPENRISC_SOPC_UART_BASE, 1024, IORESOURCE_MEM_8BIT, &serial_plat);
+ add_ns16550_device(DEVICE_ID_DYNAMIC, OPENRISC_SOPC_UART_BASE, 1024,
+ IORESOURCE_MEM | IORESOURCE_MEM_8BIT, &serial_plat);
#ifdef CONFIG_DRIVER_NET_ETHOC
add_generic_device("ethoc", DEVICE_ID_DYNAMIC, NULL,
diff --git a/arch/ppc/boards/freescale-p1022ds/p1022ds.c b/arch/ppc/boards/freescale-p1022ds/p1022ds.c
index c800064..57e7953 100644
--- a/arch/ppc/boards/freescale-p1022ds/p1022ds.c
+++ b/arch/ppc/boards/freescale-p1022ds/p1022ds.c
@@ -130,7 +130,7 @@ static int p1022ds_console_init(void)
serial_plat.clock = fsl_get_bus_freq(0);
add_ns16550_device(DEVICE_ID_DYNAMIC, CFG_IMMR + 0x4500, 16,
- IORESOURCE_MEM_8BIT, &serial_plat);
+ IORESOURCE_MEM | IORESOURCE_MEM_8BIT, &serial_plat);
return 0;
}
diff --git a/arch/ppc/boards/freescale-p2020rdb/p2020rdb.c b/arch/ppc/boards/freescale-p2020rdb/p2020rdb.c
index 229ae41..385a436 100644
--- a/arch/ppc/boards/freescale-p2020rdb/p2020rdb.c
+++ b/arch/ppc/boards/freescale-p2020rdb/p2020rdb.c
@@ -112,7 +112,8 @@ static int p2020_console_init(void)
serial_plat.clock = fsl_get_bus_freq(0);
- add_ns16550_device(DEVICE_ID_DYNAMIC, 0xffe04500, 16, IORESOURCE_MEM_8BIT,
+ add_ns16550_device(DEVICE_ID_DYNAMIC, 0xffe04500, 16,
+ IORESOURCE_MEM | IORESOURCE_MEM_8BIT,
&serial_plat);
return 0;
}
diff --git a/arch/ppc/boards/geip-da923rc/da923rc.c b/arch/ppc/boards/geip-da923rc/da923rc.c
index 976aa8d..3d77349 100644
--- a/arch/ppc/boards/geip-da923rc/da923rc.c
+++ b/arch/ppc/boards/geip-da923rc/da923rc.c
@@ -115,7 +115,8 @@ static int da923rc_console_init(void)
barebox_set_model("unknown");
serial_plat.clock = fsl_get_bus_freq(0);
- add_ns16550_device(1, CFG_CCSRBAR + 0x4600, 16, IORESOURCE_MEM_8BIT,
+ add_ns16550_device(1, CFG_CCSRBAR + 0x4600, 16,
+ IORESOURCE_MEM | IORESOURCE_MEM_8BIT,
&serial_plat);
return 0;
}
diff --git a/arch/x86/boards/x86_generic/serial_ns16550.c b/arch/x86/boards/x86_generic/serial_ns16550.c
index cae61df..3b284f3 100644
--- a/arch/x86/boards/x86_generic/serial_ns16550.c
+++ b/arch/x86/boards/x86_generic/serial_ns16550.c
@@ -30,8 +30,6 @@
static struct NS16550_plat serial_plat = {
.clock = 1843200,
- .reg_read = x86_uart_read,
- .reg_write = x86_uart_write,
};
static int pc_console_init(void)
@@ -40,7 +38,10 @@ static int pc_console_init(void)
barebox_set_hostname("x86");
/* Register the serial port */
- add_ns16550_device(DEVICE_ID_DYNAMIC, 0x3f8, 8, 0, &serial_plat);
+ add_ns16550_device(DEVICE_ID_DYNAMIC, 0x3f8, 8, IORESOURCE_IO,
+ &serial_plat);
+ add_ns16550_device(DEVICE_ID_DYNAMIC, 0x2f8, 8, IORESOURCE_IO,
+ &serial_plat);
return 0;
}
diff --git a/arch/x86/include/asm/syslib.h b/arch/x86/include/asm/syslib.h
index a6c44e9..14e373a 100644
--- a/arch/x86/include/asm/syslib.h
+++ b/arch/x86/include/asm/syslib.h
@@ -14,9 +14,6 @@
*
*/
-extern unsigned int x86_uart_read(unsigned long, unsigned char);
-extern void x86_uart_write(unsigned int, unsigned long, unsigned char);
-
#ifdef CONFIG_X86_BIOS_BRINGUP
extern int bios_disk_rw_int13_extensions(int, int, void*) __attribute__((regparm(3)));
diff --git a/arch/x86/mach-i386/Makefile b/arch/x86/mach-i386/Makefile
index 10712e6..e46aa5b 100644
--- a/arch/x86/mach-i386/Makefile
+++ b/arch/x86/mach-i386/Makefile
@@ -1,4 +1,3 @@
-obj-y += generic.o
obj-y += reset.o
# reference clocksource
diff --git a/arch/x86/mach-i386/generic.c b/arch/x86/mach-i386/generic.c
deleted file mode 100644
index 69cf53c..0000000
--- a/arch/x86/mach-i386/generic.c
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- * Copyright (C) 2009 Juergen Beisert, Pengutronix
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- *
- */
-
-/**
- * @file
- * @brief x86 Architecture Initialization routines
- */
-
-#include <io.h>
-
-/** to work with the 8250 UART driver implementation we need this function */
-unsigned int x86_uart_read(unsigned long base, unsigned char reg_idx)
-{
- return inb(base + reg_idx);
-}
-
-/** to work with the 8250 UART driver implementation we need this function */
-void x86_uart_write(unsigned int val, unsigned long base, unsigned char reg_idx)
-{
- outb(val, base + reg_idx);
-}
diff --git a/drivers/serial/serial_ns16550.c b/drivers/serial/serial_ns16550.c
index 0c00eb1..7d22873 100644
--- a/drivers/serial/serial_ns16550.c
+++ b/drivers/serial/serial_ns16550.c
@@ -47,6 +47,7 @@ struct ns16550_priv {
struct console_device cdev;
struct NS16550_plat plat;
int access_width;
+ int mmio;
struct clk *clk;
uint32_t fcrval;
};
@@ -62,6 +63,90 @@ struct ns16550_drvdata {
};
/**
+ * @brief read system i/o (byte)
+ * @param[in] addr address to read
+ * @param[in] mmio memory i/o space or i/o port space
+ */
+static inline uint8_t ns16550_sys_readb(void __iomem *addr, int mmio)
+{
+ if (mmio)
+ return readb(addr);
+ else
+ return (uint8_t) inb((int) addr);
+}
+
+/**
+ * @brief read system i/o (word)
+ * @param[in] addr address to read
+ * @param[in] mmio memory i/o space or i/o port space
+ */
+static inline uint16_t ns16550_sys_readw(void __iomem *addr, int mmio)
+{
+ if (mmio)
+ return readw(addr);
+ else
+ return (uint16_t) inw((int) addr);
+}
+
+/**
+ * @brief read system i/o (dword)
+ * @param[in] addr address to read
+ * @param[in] mmio memory i/o space or i/o port space
+ */
+static inline uint32_t ns16550_sys_readl(void __iomem *addr, int mmio)
+{
+ if (mmio)
+ return readl(addr);
+ else
+ return (uint32_t) inl((int) addr);
+}
+
+/**
+ * @brief write system i/o (byte)
+ * @param[in] val data to write
+ * @param[in] addr address to write to
+ * @param[in] mmio memory i/o space or i/o port space
+ */
+static inline void ns16550_sys_writeb(uint8_t val, void __iomem *addr,
+ int mmio)
+{
+ if (mmio)
+ writeb(val, addr);
+ else
+ outb(val, (int) addr);
+}
+
+/**
+ * @brief read system i/o (word)
+ * @param[in] val data to write
+ * @param[in] addr address to write to
+ * @param[in] mmio memory i/o space or i/o port space
+ */
+static inline void ns16550_sys_writew(uint16_t val, void __iomem *addr,
+ int mmio)
+{
+ if (mmio)
+ writew(val, addr);
+ else
+ outw(val, (int) addr);
+}
+
+/**
+ * @brief read system i/o (dword)
+ * @param[in] val data to write
+ * @param[in] addr address to write to
+ * @param[in] mmio memory i/o space or i/o port space
+ */
+static inline void ns16550_sys_writel(uint32_t val, void __iomem *addr,
+ int mmio)
+{
+ if (mmio)
+ writel(val, addr);
+ else
+ outl(val, (int) addr);
+}
+
+/**
* @brief read register
*
* @param[in] cdev pointer to console device
@@ -78,16 +163,13 @@ static uint32_t ns16550_read(struct console_device *cdev, uint32_t off)
off <<= plat->shift;
- if (plat->reg_read)
- return plat->reg_read((unsigned long)dev->priv, off);
-
switch (width) {
case IORESOURCE_MEM_8BIT:
- return readb(dev->priv + off);
+ return ns16550_sys_readb(dev->priv + off, priv->mmio);
case IORESOURCE_MEM_16BIT:
- return readw(dev->priv + off);
+ return ns16550_sys_readw(dev->priv + off, priv->mmio);
case IORESOURCE_MEM_32BIT:
- return readl(dev->priv + off);
+ return ns16550_sys_readl(dev->priv + off, priv->mmio);
}
return -1;
}
@@ -109,20 +191,15 @@ static void ns16550_write(struct console_device *cdev, uint32_t val,
off <<= plat->shift;
- if (plat->reg_write) {
- plat->reg_write(val, (unsigned long)dev->priv, off);
- return;
- }
-
switch (width) {
case IORESOURCE_MEM_8BIT:
- writeb(val & 0xff, dev->priv + off);
+ ns16550_sys_writeb(val & 0xff, dev->priv + off, priv->mmio);
break;
case IORESOURCE_MEM_16BIT:
- writew(val & 0xffff, dev->priv + off);
+ ns16550_sys_writew(val & 0xffff, dev->priv + off, priv->mmio);
break;
case IORESOURCE_MEM_32BIT:
- writel(val, dev->priv + off);
+ ns16550_sys_writel(val, dev->priv + off, priv->mmio);
break;
}
}
@@ -293,16 +370,30 @@ static int ns16550_probe(struct device_d *dev)
struct console_device *cdev;
struct NS16550_plat *plat = (struct NS16550_plat *)dev->platform_data;
struct ns16550_drvdata *devtype;
+ struct resource *res;
int ret;
ret = dev_get_drvdata(dev, (unsigned long *)&devtype);
if (ret)
devtype = &ns16550_drvdata;
- dev->priv = dev_request_mem_region(dev, 0);
-
priv = xzalloc(sizeof(*priv));
+ res = dev_get_resource(dev, IORESOURCE_MEM, 0);
+ priv->mmio = (res != NULL);
+ if (res) {
+ res = request_iomem_region(dev_name(dev), res->start, res->end);
+ } else {
+ res = dev_get_resource(dev, IORESOURCE_IO, 0);
+ if (res)
+ res = request_ioport_region(dev_name(dev), res->start,
+ res->end);
+ }
+ if (!res)
+ goto err;
+ dev->priv = (void __force __iomem *) res->start;
+
+
if (plat)
priv->plat = *plat;
else
diff --git a/include/driver.h b/include/driver.h
index 7c7d38f..ffc0cba 100644
--- a/include/driver.h
+++ b/include/driver.h
@@ -278,7 +278,7 @@ static inline struct device_d *add_ns16550_device(int id, resource_size_t start,
resource_size_t size, int flags, struct NS16550_plat *pdata)
{
return add_generic_device("ns16550_serial", id, NULL, start, size,
- IORESOURCE_MEM | flags, pdata);
+ flags, pdata);
}
#ifdef CONFIG_DRIVER_NET_DM9K
diff --git a/include/ns16550.h b/include/ns16550.h
index 36aa5ff..876bb04 100644
--- a/include/ns16550.h
+++ b/include/ns16550.h
@@ -33,18 +33,9 @@
struct NS16550_plat {
/** Clock speed */
unsigned int clock;
- /**
- * register read access capability
- */
- unsigned int (*reg_read) (unsigned long base, unsigned char reg_offset);
- /**
- * register write access capability
- */
- void (*reg_write) (unsigned int val, unsigned long base,
- unsigned char reg_offset);
-
int shift;
unsigned int flags;
+ int mmio;
#define NS16650_FLAG_DISABLE_FIFO 1
};
--
1.7.1
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^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCHv4 1/3] common: Allow for I/O mapped I/O
2014-04-07 10:01 [PATCHv4 1/3] common: Allow for I/O mapped I/O michel
2014-04-07 10:01 ` [PATCHv4 2/3] x86: Add support for IDE on the legacy I/O ports michel
2014-04-07 10:01 ` [PATCHv4 3/3] x86: ns16550: Rework driver to allow for x86 I/O space michel
@ 2014-04-08 6:19 ` Sascha Hauer
2 siblings, 0 replies; 4+ messages in thread
From: Sascha Hauer @ 2014-04-08 6:19 UTC (permalink / raw)
To: michel; +Cc: barebox
On Mon, Apr 07, 2014 at 12:01:20PM +0200, michel@reverze.net wrote:
> From: Michel Stam <m.stam@fugro.nl>
>
> Rework the current framework so that I/O mapped I/O resources are
> also possible.
>
> Signed-off-by: Michel Stam <michel@reverze.net>
Applied, thanks
Sascha
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^ permalink raw reply [flat|nested] 4+ messages in thread