path: root/target/linux/ixp4xx/patches/139-ixp4xx_net_driver_mtd_load_fw.patch

---
 drivers/net/ixp4xx/Kconfig             |   10 +
 drivers/net/ixp4xx/Makefile            |    1 
 drivers/net/ixp4xx/npe_ucode.c         |  185 +++++++++++++++++++++++++++++++++
 drivers/net/ixp4xx/ucode_dl.c          |   43 ++++---
 include/asm-arm/arch-ixp4xx/platform.h |   19 +++
 include/linux/ixp_npe.h                |    1 
 6 files changed, 239 insertions(+), 20 deletions(-)

Index: linux-2.6.20-rc3/drivers/net/ixp4xx/Kconfig
===================================================================
--- linux-2.6.20-rc3.orig/drivers/net/ixp4xx/Kconfig
+++ linux-2.6.20-rc3/drivers/net/ixp4xx/Kconfig
@@ -11,6 +11,7 @@
 	tristate "IXP4xx NPE support"
 	depends on ARCH_IXP4XX
 	depends on NET_ETHERNET
+	select CRC16
 	help
 	  The IXP4XX NPE driver supports the 3 CPU co-processors called
 	  "Network Processing Engines" (NPE). It adds support fo downloading
@@ -18,7 +19,7 @@
 	  More about this at: Documentation/networking/ixp4xx/README.
 	  You can either use this OR the Intel Access Library (IAL)
 
-config IXP4XX_FW_LOAD
+config IXP4XX_NPE_FW_LOAD
 	bool "Use Firmware hotplug for Microcode download"
 	depends on IXP4XX_NPE
 	select HOTPLUG
@@ -28,6 +29,13 @@
 	  /usr/lib/hotplug/firmware/NPE-[ABC]
 	  see Documentation/firmware_class/hotplug-script
 
+config IXP4XX_NPE_FW_MTD
+	bool "Load firmware from an mtd partition"
+	depends on IXP4XX_NPE && MTD_IXP4XX
+	help
+	  With this option, the driver will search for
+	  the firmware into an MTD partition.
+
 config IXP4XX_MAC
 	tristate "IXP4xx MAC support"
 	depends on IXP4XX_NPE
Index: linux-2.6.20-rc3/drivers/net/ixp4xx/Makefile
===================================================================
--- linux-2.6.20-rc3.orig/drivers/net/ixp4xx/Makefile
+++ linux-2.6.20-rc3/drivers/net/ixp4xx/Makefile
@@ -1,5 +1,6 @@
 obj-$(CONFIG_IXP4XX_QMGR) += ixp4xx_qmgr.o
 obj-$(CONFIG_IXP4XX_NPE) += ixp4xx_npe.o
+obj-$(CONFIG_IXP4XX_NPE_FW_MTD) += npe_ucode.o
 obj-$(CONFIG_IXP4XX_MAC) += ixp4xx_mac.o
 obj-$(CONFIG_IXP4XX_CRYPTO) += ixp4xx_crypto.o
 
Index: linux-2.6.20-rc3/drivers/net/ixp4xx/npe_ucode.c
===================================================================
--- /dev/null
+++ linux-2.6.20-rc3/drivers/net/ixp4xx/npe_ucode.c
@@ -0,0 +1,185 @@
+/*
+ * Provide an NPE platform device for microcode handling
+ *
+ * Copyright (C) 2006 Christian Hohnstaedt <chohnstaedt@innominate.com>
+ *
+ * This file is released under the GPLv2
+ */
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/firmware.h>
+#include <linux/mtd/mtd.h>
+
+#include <linux/ixp_npe.h>
+
+#define DL_MAGIC 0xfeedf00d
+#define DL_MAGIC_SWAP 0x0df0edfe
+
+#define IMG_SIZE(image) (((image)->size * sizeof(u32)) + \
+		sizeof(struct dl_image))
+
+#define IMG_REV_MAJOR(id) (((id) >> 8) & 0x0f)
+#define IMG_REV_MINOR(id) ((id) & 0x0f)
+#define IMG_FUNC(id) (((id) >> 16) & 0xff)
+#define IMG_NPE(id) (((id) >> 24) & 0x0f)
+#define IMG_IXP(id) (((id) >> 28) & 0x0f)
+
+static struct platform_driver ixp4xx_npe_ucode_driver;
+static unsigned char *partition_name = NULL;
+
+static void print_image_info(u32 id, u32 offset, u32 size)
+{
+	unsigned char idx;
+	const char *names[] = { "IXP425", "IXP465", "unknown" };
+
+	idx = IMG_IXP(id) < 2 ? IMG_IXP(id) : 2;
+
+	printk(KERN_INFO "npe: found at 0x%x, %s/NPE-%c func: %02x, rev: %x.%x, "
+		"size: %5d, id: %08x\n", offset, names[idx], IMG_NPE(id) + 'A',
+		IMG_FUNC(id), IMG_REV_MAJOR(id), IMG_REV_MINOR(id), size, id);
+}
+
+void npe_swap_image(struct dl_image *image)
+{
+	unsigned int i;
+
+	image->magic = swab32(image->magic);
+	image->id = swab32(image->id);
+	image->size = swab32(image->size);
+
+	for (i = 0; i < image->size; i++)
+		image->u.data[i] = swab32(image->u.data[i]);
+}
+
+static void npe_find_microcode(struct mtd_info *mtd)
+{
+	u32 buf;
+	u32 magic = htonl(DL_MAGIC);
+	u32 id, size;
+	size_t retlen;
+	int err;
+	unsigned int offset = 0;
+
+	printk("npe: searching for firmware...\n");
+
+	while (offset < mtd->size) {
+
+		err = mtd->read(mtd, offset, 4, &retlen, (u_char *) &buf);
+		offset += retlen;
+
+		if (buf != magic)
+			continue;
+
+		err = mtd->read(mtd, offset, 4, &retlen, (u_char *) &id);
+		offset += retlen;
+
+		if (id == magic)
+			break;
+
+		id = ntohl(id);
+
+		err = mtd->read(mtd, offset, 4, &retlen, (u_char *) &size);
+		offset += retlen;
+
+		size = (ntohl(size) * 4) + 12;
+
+		print_image_info(id, offset - 12, size);
+
+		if (size < 24000 && ( IMG_FUNC(id) == 0x01 || IMG_FUNC(id) == 0x00) || IMG_FUNC(id) == 0x05 ) { // XXX fix size/detection
+
+			struct dl_image *image = kmalloc(size, GFP_KERNEL);
+
+			/* we are going to load it, rewind offset */
+			offset -= 12;
+
+			if (image) {
+				err = mtd->read(mtd, offset, size, &retlen, (u_char *) image);
+
+				if (err == 0 && retlen == size) {
+					if (image->magic == DL_MAGIC_SWAP)
+						npe_swap_image(image);
+
+					store_npe_image(image, NULL);
+				} else {
+					printk(KERN_ERR "unable to read firmware\n");
+				}
+
+				kfree(image);
+			}
+
+			offset += size;
+		}
+	}
+}
+
+static void npe_flash_add(struct mtd_info *mtd)
+{
+	if (partition_name == NULL)
+		return;
+
+	if (strcmp(mtd->name, partition_name) == 0) {
+		npe_find_microcode(mtd);
+	}
+}
+
+static void npe_flash_remove(struct mtd_info *mtd) {
+}
+
+static struct mtd_notifier npe_flash_notifier = {
+	.add = npe_flash_add,
+	.remove = npe_flash_remove,
+};
+
+static int npe_ucode_probe(struct platform_device *pdev)
+{
+	struct npe_ucode_platform_data *data = pdev->dev.platform_data;
+
+	if (partition_name)
+		return -EEXIST;
+
+	if (data && data->mtd_partition) {
+		partition_name = data->mtd_partition;
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static int npe_ucode_remove(struct platform_device *pdev)
+{
+	return 0;
+}
+
+static struct platform_driver ixp4xx_npe_ucode_driver = {
+	.driver = {
+		.name	= "ixp4xx_npe_ucode",
+		.owner	= THIS_MODULE,
+	},
+	.probe	= npe_ucode_probe,
+	.remove	= npe_ucode_remove,
+};
+
+static int __init npe_ucode_init(void)
+{
+	int ret;
+
+	ret = platform_driver_register(&ixp4xx_npe_ucode_driver);
+	register_mtd_user(&npe_flash_notifier);
+
+	return ret;
+}
+
+static void __exit npe_ucode_exit(void)
+{
+	unregister_mtd_user(&npe_flash_notifier);
+	platform_driver_unregister(&ixp4xx_npe_ucode_driver);
+}
+
+module_init(npe_ucode_init);
+module_exit(npe_ucode_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
Index: linux-2.6.20-rc3/drivers/net/ixp4xx/ucode_dl.c
===================================================================
--- linux-2.6.20-rc3.orig/drivers/net/ixp4xx/ucode_dl.c
+++ linux-2.6.20-rc3/drivers/net/ixp4xx/ucode_dl.c
@@ -16,6 +16,7 @@
 #include <linux/firmware.h>
 #include <linux/dma-mapping.h>
 #include <linux/byteorder/swab.h>
+#include <linux/crc16.h>
 #include <asm/uaccess.h>
 #include <asm/io.h>
 
@@ -26,6 +27,12 @@
 #define DL_MAGIC 0xfeedf00d
 #define DL_MAGIC_SWAP 0x0df0edfe
 
+#define IMG_REV_MAJOR(id) (((id) >> 8) & 0x0f)
+#define IMG_REV_MINOR(id) ((id) & 0x0f)
+#define IMG_FUNC(id) (((id) >> 16) & 0xff)
+#define IMG_NPE(id) (((id) >> 24) & 0x0f)
+#define IMG_IXP(id) (((id) >> 28) & 0x0f)
+
 #define EOF_BLOCK 0xf
 #define IMG_SIZE(image) (((image)->size * sizeof(u32)) + \
 		sizeof(struct dl_image))
@@ -38,21 +45,6 @@
 	data,
 };
 
-struct dl_block {
-	u32 type;
-	u32 offset;
-};
-
-struct dl_image {
-	u32 magic;
-	u32 id;
-	u32 size;
-	union {
-		u32 data[0];
-		struct dl_block block[0];
-	} u;
-};
-
 struct dl_codeblock {
 	u32 npe_addr;
 	u32 size;
@@ -127,20 +119,33 @@
 	return 0;
 }
 
-static int store_npe_image(struct dl_image *image, struct device *dev)
+int store_npe_image(struct dl_image *image, struct device *dev)
 {
 	struct dl_block *blk;
 	struct dl_codeblock *cb;
 	struct npe_info *npe;
 	int ret=0;
+	u16 crc;
 
 	if (!dev) {
-		dev = get_npe_by_id( (image->id >> 24) & 0xf);
+		dev = get_npe_by_id(IMG_NPE(image->id));
 		return_npe_dev(dev);
 	}
 	if (!dev)
 		return -ENODEV;
 
+	if (image->size > 24000) { // XXX fix max size
+		printk(KERN_ERR "npe: firmware too large\n");
+		return -EFBIG;
+	}
+
+	if (IMG_REV_MAJOR(image->id) != 2) {
+		printk(KERN_ERR "npe: only revision 2 is supported at this time\n");
+		return -EINVAL;
+	}
+
+	crc = crc16(0, (u8 *) image, IMG_SIZE(image));
+
 	npe = dev_get_drvdata(dev);
 	if (npe->loaded && (npe->usage > 0)) {
 		printk(KERN_INFO "Cowardly refusing to reload an Image "
@@ -267,8 +272,7 @@
 
 static void npe_firmware_probe(struct device *dev)
 {
-#if (defined(CONFIG_FW_LOADER) || defined(CONFIG_FW_LOADER_MODULE)) \
-	&& defined(MODULE)
+#ifdef CONFIG_IXP4XX_NPE_FW_LOADER
 	const struct firmware *fw_entry;
 	struct npe_info *npe = dev_get_drvdata(dev);
 	struct dl_image *image;
@@ -477,3 +481,4 @@
 
 EXPORT_SYMBOL(get_npe_by_id);
 EXPORT_SYMBOL(return_npe_dev);
+EXPORT_SYMBOL(store_npe_image);
Index: linux-2.6.20-rc3/include/asm-arm/arch-ixp4xx/platform.h
===================================================================
--- linux-2.6.20-rc3.orig/include/asm-arm/arch-ixp4xx/platform.h
+++ linux-2.6.20-rc3/include/asm-arm/arch-ixp4xx/platform.h
@@ -86,6 +86,21 @@
 	unsigned long scl_pin;
 };
 
+struct dl_block {
+	u32 type;
+        u32 offset;
+};
+
+struct dl_image {
+	u32 magic;
+	u32 id;
+	u32 size;
+	union {
+		u32 data[0];
+		struct dl_block block[0];
+	} u;
+};
+
 struct npe_plat_data {
 	const char *name;
 	int data_size;
@@ -105,6 +120,10 @@
 
 };
 
+struct npe_ucode_platform_data {
+	unsigned char *mtd_partition;
+};
+ 
 /*
  * This structure provide a means for the board setup code
  * to give information to th pata_ixp4xx driver. It is
Index: linux-2.6.20-rc3/include/linux/ixp_npe.h
===================================================================
--- linux-2.6.20-rc3.orig/include/linux/ixp_npe.h
+++ linux-2.6.20-rc3/include/linux/ixp_npe.h
@@ -99,6 +99,7 @@
 
 extern struct device *get_npe_by_id(int id);
 extern void return_npe_dev(struct device *dev);
+extern int store_npe_image(struct dl_image *image, struct device *dev);
 
 /* NPE Messages */
 extern int