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* [PATCHv3 1/3] common: Allow for I/O mapped I/O
@ 2014-04-05 13:37 michel
  2014-04-05 13:37 ` [PATCHv3 2/3] x86: Add support for IDE on the legacy I/O ports michel
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: michel @ 2014-04-05 13:37 UTC (permalink / raw)
  To: barebox

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>
---
 arch/arm/include/asm/io.h     |    2 +
 arch/mips/include/asm/io.h    |    2 +
 arch/nios2/include/asm/io.h   |    2 +
 arch/sandbox/include/asm/io.h |    1 +
 arch/x86/include/asm/io.h     |    2 +
 commands/Kconfig              |    8 ++--
 commands/Makefile             |    2 +-
 commands/iomem.c              |   52 ---------------------------------
 commands/iomemport.c          |   64 +++++++++++++++++++++++++++++++++++++++++
 common/memory.c               |    3 +-
 common/resource.c             |   30 +++++++++++++++----
 drivers/base/driver.c         |   16 ++++++----
 drivers/gpio/gpio-generic.c   |    4 +-
 drivers/mfd/syscon.c          |    2 +-
 drivers/misc/sram.c           |    2 +-
 include/driver.h              |    5 ++-
 include/linux/ioport.h        |    5 ++-
 17 files changed, 125 insertions(+), 77 deletions(-)
 delete mode 100644 commands/iomem.c
 create mode 100644 commands/iomemport.c

diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h
index e0630eb..ccf1f59 100644
--- a/arch/arm/include/asm/io.h
+++ b/arch/arm/include/asm/io.h
@@ -3,6 +3,8 @@
 
 #include <asm-generic/io.h>
 
+#define	IO_SPACE_LIMIT	0
+
 /*
  * String version of IO memory access ops:
  */
diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h
index 4100e1e..1cc8a51 100644
--- a/arch/mips/include/asm/io.h
+++ b/arch/mips/include/asm/io.h
@@ -14,6 +14,8 @@
 #include <asm/types.h>
 #include <asm/byteorder.h>
 
+#define	IO_SPACE_LIMIT	0
+
 /*****************************************************************************/
 /*
  * readX/writeX() are used to access memory mapped devices. On some
diff --git a/arch/nios2/include/asm/io.h b/arch/nios2/include/asm/io.h
index 8ee48e0..59eea73 100644
--- a/arch/nios2/include/asm/io.h
+++ b/arch/nios2/include/asm/io.h
@@ -22,6 +22,8 @@
 
 #include <asm/byteorder.h>
 
+#define	IO_SPACE_LIMIT	0
+
 #define __raw_writeb(v, a)       (*(volatile unsigned char  *)(a) = (v))
 #define __raw_writew(v, a)       (*(volatile unsigned short *)(a) = (v))
 #define __raw_writel(v, a)       (*(volatile unsigned int   *)(a) = (v))
diff --git a/arch/sandbox/include/asm/io.h b/arch/sandbox/include/asm/io.h
index 8ca164f..35b5784 100644
--- a/arch/sandbox/include/asm/io.h
+++ b/arch/sandbox/include/asm/io.h
@@ -2,5 +2,6 @@
 #define __ASM_SANDBOX_IO_H
 
 #include <asm-generic/io.h>
+#define	IO_SPACE_LIMIT 0
 
 #endif /* __ASM_SANDBOX_IO_H */
diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
index 9cb78e4..f020510 100644
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -12,6 +12,8 @@
 
 #include <asm/byteorder.h>
 
+#define	IO_SPACE_LIMIT	0xffff
+
 static inline void outb(unsigned char value, int port)
 {
 	asm volatile("outb %b0, %w1" : : "a"(value), "Nd"(port));
diff --git a/commands/Kconfig b/commands/Kconfig
index cc014f3..33bd353 100644
--- a/commands/Kconfig
+++ b/commands/Kconfig
@@ -307,12 +307,12 @@ config CMD_MEMINFO
 	tristate
 	prompt "meminfo"
 
-config CMD_IOMEM
+config CMD_IOMEMPORT
 	tristate
-	prompt "iomem"
+	prompt "iomem/ioport"
 	help
-	  Show information about iomem usage. Pendant to 'cat /proc/iomem'
-	  under Linux.
+	  Show information about iomem/ioport usage. Pendant to
+	  'cat /proc/iomem' and 'cat /proc/ioports' under Linux.
 
 config CMD_MEMORY
 	bool
diff --git a/commands/Makefile b/commands/Makefile
index e463031..0da1173 100644
--- a/commands/Makefile
+++ b/commands/Makefile
@@ -76,7 +76,7 @@ obj-$(CONFIG_CMD_OFTREE)	+= oftree.o
 obj-$(CONFIG_CMD_OF_PROPERTY)	+= of_property.o
 obj-$(CONFIG_CMD_OF_NODE)	+= of_node.o
 obj-$(CONFIG_CMD_MAGICVAR)	+= magicvar.o
-obj-$(CONFIG_CMD_IOMEM)		+= iomem.o
+obj-$(CONFIG_CMD_IOMEMPORT)	+= iomemport.o
 obj-$(CONFIG_CMD_LINUX_EXEC)	+= linux_exec.o
 obj-$(CONFIG_CMD_AUTOMOUNT)	+= automount.o
 obj-$(CONFIG_CMD_GLOBAL)	+= global.o
diff --git a/commands/iomem.c b/commands/iomem.c
deleted file mode 100644
index e117c2a..0000000
--- a/commands/iomem.c
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * iomem.c - barebox iomem command
- *
- * Copyright (c) 2011 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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.
- *
- * 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.
- */
-#include <common.h>
-#include <command.h>
-
-static void __print_resources(struct resource *res, int indent)
-{
-	struct resource *r;
-	int i;
-
-	for (i = 0; i < indent; i++)
-		printf("  ");
-
-	printf(PRINTF_CONVERSION_RESOURCE " - " PRINTF_CONVERSION_RESOURCE
-			" (size " PRINTF_CONVERSION_RESOURCE ") %s\n", res->start,
-			res->end, resource_size(res), res->name);
-
-	list_for_each_entry(r, &res->children, sibling)
-		__print_resources(r, indent + 1);
-}
-
-static void print_resources(struct resource *res)
-{
-	__print_resources(res, 0);
-}
-
-static int do_iomem(int argc, char *argv[])
-{
-	print_resources(&iomem_resource);
-
-	return 0;
-}
-
-BAREBOX_CMD_START(iomem)
-	.cmd		= do_iomem,
-	.usage		= "show iomem usage",
-BAREBOX_CMD_END
diff --git a/commands/iomemport.c b/commands/iomemport.c
new file mode 100644
index 0000000..06bbd92
--- /dev/null
+++ b/commands/iomemport.c
@@ -0,0 +1,64 @@
+/*
+ * iomem.c - barebox iomem command
+ *
+ * Copyright (c) 2011 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * 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.
+ */
+#include <common.h>
+#include <command.h>
+
+static void __print_resources(struct resource *res, int indent)
+{
+	struct resource *r;
+	int i;
+
+	for (i = 0; i < indent; i++)
+		printf("  ");
+
+	printf(PRINTF_CONVERSION_RESOURCE " - " PRINTF_CONVERSION_RESOURCE
+			" (size " PRINTF_CONVERSION_RESOURCE ") %s\n",
+			res->start, res->end, resource_size(res), res->name);
+
+	list_for_each_entry(r, &res->children, sibling)
+		__print_resources(r, indent + 1);
+}
+
+static void print_resources(struct resource *res)
+{
+	__print_resources(res, 0);
+}
+
+static int do_iomem(int argc, char *argv[])
+{
+	print_resources(&iomem_resource);
+
+	return 0;
+}
+
+static int do_ioport(int argc, char *argv[])
+{
+	print_resources(&ioport_resource);
+
+	return 0;
+}
+
+BAREBOX_CMD_START(iomem)
+	.cmd		= do_iomem,
+	.usage		= "show iomem usage",
+BAREBOX_CMD_END
+
+BAREBOX_CMD_START(ioport)
+	.cmd		= do_ioport,
+	.usage		= "show ioport usage",
+BAREBOX_CMD_END
diff --git a/common/memory.c b/common/memory.c
index c82bbaa..7dbd7f4 100644
--- a/common/memory.c
+++ b/common/memory.c
@@ -148,7 +148,8 @@ struct resource *request_sdram_region(const char *name, resource_size_t start,
 	for_each_memory_bank(bank) {
 		struct resource *res;
 
-		res = request_region(bank->res, name, start, start + size - 1);
+		res = __request_region(bank->res, name, start,
+				       start + size - 1);
 		if (res)
 			return res;
 	}
diff --git a/common/resource.c b/common/resource.c
index 5795e79..f05e12f 100644
--- a/common/resource.c
+++ b/common/resource.c
@@ -20,6 +20,7 @@
 #include <errno.h>
 #include <init.h>
 #include <linux/ioport.h>
+#include <asm/io.h>
 
 static int init_resource(struct resource *res, const char *name)
 {
@@ -36,7 +37,7 @@ static int init_resource(struct resource *res, const char *name)
  * the parent resource and does not conflict with any of the child
  * resources.
  */
-struct resource *request_region(struct resource *parent,
+struct resource *__request_region(struct resource *parent,
 		const char *name, resource_size_t start,
 		resource_size_t end)
 {
@@ -95,7 +96,7 @@ ok:
 }
 
 /*
- * release a region previously requested with request_region
+ * release a region previously requested with request_*_region
  */
 int release_region(struct resource *res)
 {
@@ -109,7 +110,7 @@ int release_region(struct resource *res)
 	return 0;
 }
 
-/* The root resource for the whole io space */
+/* The root resource for the whole memory-mapped io space */
 struct resource iomem_resource = {
 	.start = 0,
 	.end = 0xffffffff,
@@ -118,10 +119,27 @@ struct resource iomem_resource = {
 };
 
 /*
- * request a region inside the io space
+ * request a region inside the io space (memory)
  */
-struct resource *request_iomem_region(const char *name,
+inline struct resource *request_iomem_region(const char *name,
 		resource_size_t start, resource_size_t end)
 {
-	return request_region(&iomem_resource, name, start, end);
+	return __request_region(&iomem_resource, name, start, end);
+}
+
+/* The root resource for the whole io-mapped io space */
+struct resource ioport_resource = {
+	.start = 0,
+	.end = IO_SPACE_LIMIT,
+	.name = "ioport",
+	.children = LIST_HEAD_INIT(ioport_resource.children),
+};
+
+/*
+ * request a region inside the io space (i/o port)
+ */
+inline struct resource *request_ioport_region(const char *name,
+		resource_size_t start, resource_size_t end)
+{
+	return __request_region(&ioport_resource, name, start, end);
 }
diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index 37560fd..2cf3ee6 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -241,13 +241,14 @@ int register_driver(struct driver_d *drv)
 }
 EXPORT_SYMBOL(register_driver);
 
-struct resource *dev_get_resource(struct device_d *dev, int num)
+struct resource *dev_get_resource(struct device_d *dev, unsigned long type,
+				  int num)
 {
 	int i, n = 0;
 
 	for (i = 0; i < dev->num_resources; i++) {
 		struct resource *res = &dev->resource[i];
-		if (resource_type(res) == IORESOURCE_MEM) {
+		if (resource_type(res) == type) {
 			if (n == num)
 				return res;
 			n++;
@@ -261,7 +262,7 @@ void *dev_get_mem_region(struct device_d *dev, int num)
 {
 	struct resource *res;
 
-	res = dev_get_resource(dev, num);
+	res = dev_get_resource(dev, IORESOURCE_MEM, num);
 	if (!res)
 		return NULL;
 
@@ -270,13 +271,14 @@ void *dev_get_mem_region(struct device_d *dev, int num)
 EXPORT_SYMBOL(dev_get_mem_region);
 
 struct resource *dev_get_resource_by_name(struct device_d *dev,
+					  unsigned long type,
 					  const char *name)
 {
 	int i;
 
 	for (i = 0; i < dev->num_resources; i++) {
 		struct resource *res = &dev->resource[i];
-		if (resource_type(res) != IORESOURCE_MEM)
+		if (resource_type(res) != type)
 			continue;
 		if (!res->name)
 			continue;
@@ -291,7 +293,7 @@ void *dev_get_mem_region_by_name(struct device_d *dev, const char *name)
 {
 	struct resource *res;
 
-	res = dev_get_resource_by_name(dev, name);
+	res = dev_get_resource_by_name(dev, IORESOURCE_MEM, name);
 	if (!res)
 		return NULL;
 
@@ -303,7 +305,7 @@ void __iomem *dev_request_mem_region_by_name(struct device_d *dev, const char *n
 {
 	struct resource *res;
 
-	res = dev_get_resource_by_name(dev, name);
+	res = dev_get_resource_by_name(dev, IORESOURCE_MEM, name);
 	if (!res)
 		return NULL;
 
@@ -319,7 +321,7 @@ void __iomem *dev_request_mem_region(struct device_d *dev, int num)
 {
 	struct resource *res;
 
-	res = dev_get_resource(dev, num);
+	res = dev_get_resource(dev, IORESOURCE_MEM, num);
 	if (!res)
 		return NULL;
 
diff --git a/drivers/gpio/gpio-generic.c b/drivers/gpio/gpio-generic.c
index a2fc400..5c46282 100644
--- a/drivers/gpio/gpio-generic.c
+++ b/drivers/gpio/gpio-generic.c
@@ -310,7 +310,7 @@ static void __iomem *bgpio_map(struct device_d *dev, const char *name,
 
 	*err = 0;
 
-	r = dev_get_resource_by_name(dev, name);
+	r = dev_get_resource_by_name(dev, IORESOURCE_MEM, name);
 	if (!r)
 		return NULL;
 
@@ -342,7 +342,7 @@ static int bgpio_dev_probe(struct device_d *dev)
 	struct bgpio_chip *bgc;
 	struct bgpio_pdata *pdata = dev->platform_data;
 
-	r = dev_get_resource_by_name(dev, "dat");
+	r = dev_get_resource_by_name(dev, IORESOURCE_MEM, "dat");
 	if (!r)
 		return -EINVAL;
 
diff --git a/drivers/mfd/syscon.c b/drivers/mfd/syscon.c
index 8fc84c3..e6722e1 100644
--- a/drivers/mfd/syscon.c
+++ b/drivers/mfd/syscon.c
@@ -70,7 +70,7 @@ static int syscon_probe(struct device_d *dev)
 	if (!syscon)
 		return -ENOMEM;
 
-	res = dev_get_resource(dev, 0);
+	res = dev_get_resource(dev, IORESOURCE_MEM, 0);
 	if (!res) {
 		free(syscon);
 		return -ENOENT;
diff --git a/drivers/misc/sram.c b/drivers/misc/sram.c
index 7ea23b7..0466a15 100644
--- a/drivers/misc/sram.c
+++ b/drivers/misc/sram.c
@@ -47,7 +47,7 @@ static int sram_probe(struct device_d *dev)
 	sram->cdev.name = asprintf("sram%d",
 			cdev_find_free_index("sram"));
 
-	res = dev_get_resource(dev, 0);
+	res = dev_get_resource(dev, IORESOURCE_MEM, 0);
 
 	sram->cdev.size = (unsigned long)resource_size(res);
 	sram->cdev.ops = &memops;
diff --git a/include/driver.h b/include/driver.h
index 01b181d..7c7d38f 100644
--- a/include/driver.h
+++ b/include/driver.h
@@ -203,11 +203,13 @@ static inline const char *dev_name(const struct device_d *dev)
 /*
  * get resource 'num' for a device
  */
-struct resource *dev_get_resource(struct device_d *dev, int num);
+struct resource *dev_get_resource(struct device_d *dev, unsigned long type,
+				  int num);
 /*
  * get resource base 'name' for a device
  */
 struct resource *dev_get_resource_by_name(struct device_d *dev,
+					  unsigned long type,
 					  const char *name);
 /*
  * get register base 'name' for a device
@@ -219,6 +221,7 @@ void *dev_get_mem_region_by_name(struct device_d *dev, const char *name);
  */
 void __iomem *dev_request_mem_region_by_name(struct device_d *dev,
 					     const char *name);
+
 /*
  * get register base 'num' for a device
  */
diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index ff0cba0..d1b2f55 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h
@@ -137,14 +137,17 @@ static inline unsigned long resource_type(const struct resource *res)
 
 struct resource *request_iomem_region(const char *name,
 		resource_size_t start, resource_size_t end);
+struct resource *request_ioport_region(const char *name,
+		resource_size_t start, resource_size_t end);
 
-struct resource *request_region(struct resource *parent,
+struct resource *__request_region(struct resource *parent,
 		const char *name, resource_size_t end,
 		resource_size_t size);
 
 int release_region(struct resource *res);
 
 extern struct resource iomem_resource;
+extern struct resource ioport_resource;
 
 #endif /* __ASSEMBLY__ */
 #endif	/* _LINUX_IOPORT_H */
-- 
1.7.1


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^ permalink raw reply	[flat|nested] 4+ messages in thread
* [PATCHv3 2/3] x86: Add support for IDE on the legacy I/O ports
  2014-04-05 13:37 [PATCHv3 1/3] common: Allow for I/O mapped I/O michel
@ 2014-04-05 13:37 ` michel
  2014-04-05 13:37 ` [PATCHv3 3/3] x86: ns16550: Rework driver to allow for x86 I/O space michel
  2014-04-07  7:26 ` [PATCHv3 1/3] common: Allow for I/O mapped I/O Sascha Hauer
  2 siblings, 0 replies; 4+ messages in thread
From: michel @ 2014-04-05 13:37 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
* [PATCHv3 3/3] x86: ns16550: Rework driver to allow for x86 I/O space
  2014-04-05 13:37 [PATCHv3 1/3] common: Allow for I/O mapped I/O michel
  2014-04-05 13:37 ` [PATCHv3 2/3] x86: Add support for IDE on the legacy I/O ports michel
@ 2014-04-05 13:37 ` michel
  2014-04-07  7:26 ` [PATCHv3 1/3] common: Allow for I/O mapped I/O Sascha Hauer
  2 siblings, 0 replies; 4+ messages in thread
From: michel @ 2014-04-05 13:37 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: [PATCHv3 1/3] common: Allow for I/O mapped I/O
  2014-04-05 13:37 [PATCHv3 1/3] common: Allow for I/O mapped I/O michel
  2014-04-05 13:37 ` [PATCHv3 2/3] x86: Add support for IDE on the legacy I/O ports michel
  2014-04-05 13:37 ` [PATCHv3 3/3] x86: ns16550: Rework driver to allow for x86 I/O space michel
@ 2014-04-07  7:26 ` Sascha Hauer
  2 siblings, 0 replies; 4+ messages in thread
From: Sascha Hauer @ 2014-04-07  7:26 UTC (permalink / raw)
  To: michel; +Cc: barebox

Hi Michel,

Looks good overall. Some small remaining remarks.

On Sat, Apr 05, 2014 at 03:37:36PM +0200, michel@reverze.net wrote:
> diff --git a/commands/iomemport.c b/commands/iomemport.c
> new file mode 100644
> index 0000000..06bbd92
> --- /dev/null
> +++ b/commands/iomemport.c
> @@ -0,0 +1,64 @@
> +/*
> + * iomem.c - barebox iomem command
> + *
> + * Copyright (c) 2011 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
> + *
> + * See file CREDITS for list of people who contributed to this
> + * project.
> + *
> + * 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.
> + *
> + * 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.
> + */
> +#include <common.h>
> +#include <command.h>
> +
> +static void __print_resources(struct resource *res, int indent)
> +{
> +	struct resource *r;
> +	int i;
> +
> +	for (i = 0; i < indent; i++)
> +		printf("  ");
> +
> +	printf(PRINTF_CONVERSION_RESOURCE " - " PRINTF_CONVERSION_RESOURCE
> +			" (size " PRINTF_CONVERSION_RESOURCE ") %s\n",
> +			res->start, res->end, resource_size(res), res->name);
> +
> +	list_for_each_entry(r, &res->children, sibling)
> +		__print_resources(r, indent + 1);
> +}
> +
> +static void print_resources(struct resource *res)
> +{
> +	__print_resources(res, 0);
> +}
> +
> +static int do_iomem(int argc, char *argv[])
> +{
> +	print_resources(&iomem_resource);
> +
> +	return 0;
> +}
> +
> +static int do_ioport(int argc, char *argv[])
> +{
> +	print_resources(&ioport_resource);
> +
> +	return 0;
> +}
> +
> +BAREBOX_CMD_START(iomem)
> +	.cmd		= do_iomem,
> +	.usage		= "show iomem usage",
> +BAREBOX_CMD_END
> +
> +BAREBOX_CMD_START(ioport)
> +	.cmd		= do_ioport,
> +	.usage		= "show ioport usage",
> +BAREBOX_CMD_END

Can we surround this with a

#if IOSPACE_LIMIT > 0

So that users of architectures without iospace are not presesnted a
useless command?

BTW In this version there's no whitespace damage anymore. The patches
apply without problems now.

Sascha

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

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^ permalink raw reply	[flat|nested] 4+ messages in thread
end of thread, other threads:[~2014-04-07  7:26 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2014-04-05 13:37 [PATCHv3 1/3] common: Allow for I/O mapped I/O michel
2014-04-05 13:37 ` [PATCHv3 2/3] x86: Add support for IDE on the legacy I/O ports michel
2014-04-05 13:37 ` [PATCHv3 3/3] x86: ns16550: Rework driver to allow for x86 I/O space michel
2014-04-07  7:26 ` [PATCHv3 1/3] common: Allow for I/O mapped I/O Sascha Hauer

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