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openwrt-xburst/target/linux/ixp4xx/patches/100-npe_driver.patch

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diff --git a/Documentation/networking/ixp4xx/IxNpeMicrocode.h b/Documentation/networking/ixp4xx/IxNpeMicrocode.h
new file mode 100644
index 0000000..e5a4bd3
Index: linux-2.6.21-rc1-arm/Documentation/networking/ixp4xx/IxNpeMicrocode.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.21-rc1-arm/Documentation/networking/ixp4xx/IxNpeMicrocode.h 2007-02-21 02:24:35.000000000 -0800
@@ -0,0 +1,143 @@
+/*
+ * IxNpeMicrocode.h - Headerfile for compiling the Intel microcode C file
+ *
+ * Copyright (C) 2006 Christian Hohnstaedt <chohnstaedt@innominate.com>
+ *
+ * This file is released under the GPLv2
+ *
+ *
+ * compile with
+ *
+ * gcc -Wall IxNpeMicrocode.c -o IxNpeMicrocode
+ *
+ * Executing the resulting binary on your build-host creates the
+ * "NPE-[ABC].xxxxxxxx" files containing the selected microcode
+ *
+ * fetch the IxNpeMicrocode.c from the Intel Access Library.
+ * It will include this header.
+ *
+ * select Images for every NPE from the following
+ * (used C++ comments for easy uncommenting ....)
+ */
+
+// #define IX_NPEDL_NPEIMAGE_NPEA_ETH_SPAN_MASK_FIREWALL_VLAN_QOS_HDR_CONV_EXTMIB
+// #define IX_NPEDL_NPEIMAGE_NPEA_ETH_SPAN_VLAN_QOS_HDR_CONV_EXTMIB
+// #define IX_NPEDL_NPEIMAGE_NPEA_ETH_LEARN_FILTER_SPAN_MASK_FIREWALL_VLAN_QOS_EXTMIB
+// #define IX_NPEDL_NPEIMAGE_NPEA_HSS_TSLOT_SWITCH
+// #define IX_NPEDL_NPEIMAGE_NPEA_ETH_SPAN_FIREWALL_VLAN_QOS_HDR_CONV
+// #define IX_NPEDL_NPEIMAGE_NPEA_ETH_LEARN_FILTER_SPAN_FIREWALL_VLAN_QOS
+// #define IX_NPEDL_NPEIMAGE_NPEA_ETH_LEARN_FILTER_SPAN_FIREWALL
+// #define IX_NPEDL_NPEIMAGE_NPEA_HSS_2_PORT
+// #define IX_NPEDL_NPEIMAGE_NPEA_DMA
+// #define IX_NPEDL_NPEIMAGE_NPEA_ATM_MPHY_12_PORT
+// #define IX_NPEDL_NPEIMAGE_NPEA_HSS0_ATM_MPHY_1_PORT
+// #define IX_NPEDL_NPEIMAGE_NPEA_HSS0_ATM_SPHY_1_PORT
+// #define IX_NPEDL_NPEIMAGE_NPEA_HSS0
+// #define IX_NPEDL_NPEIMAGE_NPEA_WEP
+
+
+// #define IX_NPEDL_NPEIMAGE_NPEB_ETH_SPAN_MASK_FIREWALL_VLAN_QOS_HDR_CONV_EXTMIB
+//#define IX_NPEDL_NPEIMAGE_NPEB_ETH_SPAN_VLAN_QOS_HDR_CONV_EXTMIB
+// #define IX_NPEDL_NPEIMAGE_NPEB_ETH_LEARN_FILTER_SPAN_MASK_FIREWALL_VLAN_QOS_EXTMIB
+// #define IX_NPEDL_NPEIMAGE_NPEB_DMA
+// #define IX_NPEDL_NPEIMAGE_NPEB_ETH_SPAN_FIREWALL_VLAN_QOS_HDR_CONV
+// #define IX_NPEDL_NPEIMAGE_NPEB_ETH_LEARN_FILTER_SPAN_FIREWALL_VLAN_QOS
+ #define IX_NPEDL_NPEIMAGE_NPEB_ETH_LEARN_FILTER_SPAN_FIREWALL
+
+
+// #define IX_NPEDL_NPEIMAGE_NPEC_ETH_SPAN_MASK_FIREWALL_VLAN_QOS_HDR_CONV_EXTMIB
+// #define IX_NPEDL_NPEIMAGE_NPEC_ETH_SPAN_VLAN_QOS_HDR_CONV_EXTMIB
+// #define IX_NPEDL_NPEIMAGE_NPEC_ETH_LEARN_FILTER_SPAN_MASK_FIREWALL_VLAN_QOS_EXTMIB
+// #define IX_NPEDL_NPEIMAGE_NPEC_DMA
+// #define IX_NPEDL_NPEIMAGE_NPEC_CRYPTO_AES_ETH_LEARN_FILTER_SPAN
+// #define IX_NPEDL_NPEIMAGE_NPEC_CRYPTO_AES_ETH_LEARN_FILTER_FIREWALL
+ #define IX_NPEDL_NPEIMAGE_NPEC_CRYPTO_AES_CCM_ETH
+// #define IX_NPEDL_NPEIMAGE_NPEC_CRYPTO_ETH_LEARN_FILTER_SPAN_FIREWALL
+// #define IX_NPEDL_NPEIMAGE_NPEC_ETH_SPAN_FIREWALL_VLAN_QOS_HDR_CONV
+// #define IX_NPEDL_NPEIMAGE_NPEC_ETH_LEARN_FILTER_SPAN_FIREWALL_VLAN_QOS
+// #define IX_NPEDL_NPEIMAGE_NPEC_ETH_LEARN_FILTER_SPAN_FIREWALL
+
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <netinet/in.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <endian.h>
+#include <byteswap.h>
+#include <string.h>
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define to_le32(x) (x)
+#define to_be32(x) bswap_32(x)
+#else
+#define to_be32(x) (x)
+#define to_le32(x) bswap_32(x)
+#endif
+
+struct dl_image {
+ unsigned magic;
+ unsigned id;
+ unsigned size;
+ unsigned data[0];
+};
+
+const unsigned IxNpeMicrocode_array[];
+
+int main(int argc, char *argv[])
+{
+ struct dl_image *image = (struct dl_image *)IxNpeMicrocode_array;
+ int imgsiz, i, fd, cnt;
+ const unsigned *arrayptr = IxNpeMicrocode_array;
+ const char *names[] = { "IXP425", "IXP465", "unknown" };
+ int bigendian = 1;
+
+ if (argc > 1) {
+ if (!strcmp(argv[1], "-le"))
+ bigendian = 0;
+ else if (!strcmp(argv[1], "-be"))
+ bigendian = 1;
+ else {
+ printf("Usage: %s <-le|-be>\n", argv[0]);
+ return EXIT_FAILURE;
+ }
+ }
+
+ for (image = (struct dl_image *)arrayptr, cnt=0;
+ (image->id != 0xfeedf00d) && (image->magic == 0xfeedf00d);
+ image = (struct dl_image *)(arrayptr), cnt++)
+ {
+ unsigned char field[4];
+ imgsiz = image->size + 3;
+ *(unsigned*)field = to_be32(image->id);
+ char filename[40], slnk[10];
+
+ sprintf(filename, "NPE-%c.%08x", (field[0] & 0xf) + 'A',
+ image->id);
+ sprintf(slnk, "NPE-%c", (field[0] & 0xf) + 'A');
+ printf("Writing image: %s.NPE_%c Func: %2x Rev: %02x.%02x "
+ "Size: %5d to: '%s'\n",
+ names[field[0] >> 4], (field[0] & 0xf) + 'A',
+ field[1], field[2], field[3], imgsiz*4, filename);
+ fd = open(filename, O_CREAT | O_RDWR | O_TRUNC, 0644);
+ if (fd >= 0) {
+ for (i=0; i<imgsiz; i++) {
+ *(unsigned*)field = bigendian ?
+ to_be32(arrayptr[i]) :
+ to_le32(arrayptr[i]);
+ write(fd, field, sizeof(field));
+ }
+ close(fd);
+ unlink(slnk);
+ symlink(filename, slnk);
+ } else {
+ perror(filename);
+ }
+ arrayptr += imgsiz;
+ }
+ close(fd);
+ return 0;
+}
Index: linux-2.6.21-rc1-arm/Documentation/networking/ixp4xx/README
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.21-rc1-arm/Documentation/networking/ixp4xx/README 2007-02-21 02:24:35.000000000 -0800
@@ -0,0 +1,62 @@
+Informations about the Networking Driver using the IXP4XX CPU internal NPEs
+and Queue manager.
+
+If this driver is used, the IAL (Intel Access Library) must not be loaded.
+However, the IAL may be loaded, if this Modules are unloaded:
+ ixp4xx_npe.ko, ixp4xx_qmgr.ko ixp4xx_mac.ko
+
+This also means that HW crypto accelleration does NOT work when using this
+driver, unless I have finished my crypto driver for NPE-C
+
+
+Adoption to your custom board:
+------------------------------
+use "arch/arm/mach-ixp4xx/ixdp425-setup.c" as template:
+
+in "static struct mac_plat_info" adopt the entry "phy_id" to your needs
+(Ask your hardware designer about the PHY id)
+
+The order of "&mac0" and "&mac1" in the "struct platform_device"
+determines which of them becomes eth0 and eth1
+
+
+The Microcode:
+---------------
+Solution 1)
+ Configure "CONFIG_HOTPLUG" and "CONFIG_FW_LOADER" and configure
+ IXP4XX_NPE as module.
+ The default hotplug script will load the Firmware from
+ /usr/lib/hotplug/firmware/NPE-[ABC]
+ see Documentation/firmware_class/hotplug-script
+
+ You should take care, that $ACTION is "add" and $SUBSYSTEM is "firmware"
+ to avoid unnessecary calls:
+ test $ACTION = "remove" -o $SUBSYSTEM != "firmware" && exit
+
+Solution 2)
+ create a char-dev: "mknod /dev/misc/npe c 10 184"
+ cat the Microcode into it:
+ cat /usr/lib/hotplug/firmware/NPE-* > /dev/misc/npe
+ This also works if the driver is linked to the kernel
+
+ Having a mix of both (e.g. solution 1 for NPE-B and solution 2 for NPE-C)
+ is perfectly ok and works.
+
+ The state of the NPEs can be seen and changed at:
+ /sys/bus/platform/devices/ixp4xx_npe.X/state
+
+
+Obtaining the Microcode:
+------------------------
+1) IxNpeMicrocode.h in this directory:
+ Download IPL_IXP400NPELIBRARYWITHCRYPTO-2_1.ZIP from Intel
+ It unpacks the Microcode IxNpeMicrocode.c
+ Read the Licence !
+ Compile it with "gcc -Wall IxNpeMicrocode.c -o IxNpeMicrocode" on your host.
+ The resulting images can be moved to "/usr/lib/hotplug/firmware"
+
+2) mc_grab.c in this directory:
+ Compile and execute it either on the host or on the target
+ to grab the microcode from a binary image like the RedBoot bootloader.
+
+
Index: linux-2.6.21-rc1-arm/Documentation/networking/ixp4xx/mc_grab.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.21-rc1-arm/Documentation/networking/ixp4xx/mc_grab.c 2007-02-21 02:24:35.000000000 -0800
@@ -0,0 +1,97 @@
+/*
+ * mc_grab.c - grabs IXP4XX microcode from a binary datastream
+ * e.g. The redboot bootloader....
+ *
+ * usage: mc_grab 1010200 2010200 < /dev/mtd/0 > /dev/misc/npe
+ *
+ * Copyright (C) 2006 Christian Hohnstaedt <chohnstaedt@innominate.com>
+ *
+ * This file is released under the GPLv2
+ */
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <netinet/in.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <string.h>
+
+#define MAX_IMG 6
+
+static void print_mc_info(unsigned id, int siz)
+{
+ unsigned char buf[sizeof(unsigned)];
+ *(unsigned*)buf = id;
+ unsigned idx;
+ const char *names[] = { "IXP425", "IXP465", "unknown" };
+
+ idx = (buf[0] >> 4) < 2 ? (buf[0] >> 4) : 2;
+
+ fprintf(stderr, "Device: %s:NPE_%c Func: %2x Rev: %02x.%02x "
+ "Size: %5d bytes ID:%08x\n", names[idx], (buf[0] & 0xf)+'A',
+ buf[1], buf[2], buf[3], siz*4, ntohl(id));
+}
+
+int main(int argc, char *argv[])
+{
+ int i,j;
+ unsigned char buf[sizeof(unsigned)];
+ unsigned magic = htonl(0xfeedf00d);
+ unsigned id, my_ids[MAX_IMG+1], siz, sizbe;
+ int ret=1, verbose=0;
+
+ for (i=0, j=0; i<argc-1 && j<MAX_IMG; i++) {
+ if (!strcmp(argv[i+1], "-v"))
+ verbose = 1;
+ else
+ my_ids[j++] = htonl(strtoul(argv[i+1], NULL, 16));
+ }
+ my_ids[j] = 0;
+ if (my_ids[0] == 0 && !verbose) {
+ fprintf(stderr, "Usage: %s <-v> [ID1] [ID2] [IDn]\n", argv[0]);
+ return 1;
+ }
+
+ while ((ret=read(0, buf, sizeof(unsigned))) == sizeof(unsigned)) {
+ if (*(unsigned*)buf != magic)
+ continue;
+ if ((ret=read(0, buf, sizeof(unsigned))) != sizeof(unsigned) )
+ break;
+ id = *(unsigned*)buf;
+
+ if (read(0, buf, sizeof(siz)) != sizeof(siz) )
+ break;
+ sizbe = *(unsigned*)buf;
+ siz = ntohl(sizbe);
+
+ if (verbose)
+ print_mc_info(id, siz);
+
+ for(i=0; my_ids[i]; i++)
+ if (id == my_ids[i])
+ break;
+ if (!my_ids[i])
+ continue;
+
+ if (!verbose)
+ print_mc_info(id, siz);
+
+ write(1, &magic, sizeof(magic));
+ write(1, &id, sizeof(id));
+ write(1, &sizbe, sizeof(sizbe));
+ for (i=0; i<siz; i++) {
+ if (read(0, buf, sizeof(unsigned)) != sizeof(unsigned))
+ break;
+ write(1, buf, sizeof(unsigned));
+ }
+ if (i != siz)
+ break;
+ }
+ if (ret)
+ fprintf(stderr, "Error reading Microcode\n");
+ return ret;
+}
Index: linux-2.6.21-rc1-arm/arch/arm/mach-ixp4xx/common.c
===================================================================
--- linux-2.6.21-rc1-arm.orig/arch/arm/mach-ixp4xx/common.c 2007-02-21 02:24:18.000000000 -0800
+++ linux-2.6.21-rc1-arm/arch/arm/mach-ixp4xx/common.c 2007-02-21 02:24:35.000000000 -0800
@@ -357,6 +357,90 @@
&ixp46x_i2c_controller
};
+static struct npe_plat_data npea = {
+ .name = "NPE-A",
+ .data_size = 0x800,
+ .inst_size = 0x1000,
+ .id = 0,
+};
+
+static struct npe_plat_data npeb = {
+ .name = "NPE-B",
+ .data_size = 0x800,
+ .inst_size = 0x800,
+ .id = 1,
+};
+
+static struct npe_plat_data npec = {
+ .name = "NPE-C",
+ .data_size = 0x800,
+ .inst_size = 0x800,
+ .id = 2,
+};
+
+static struct resource res_npea = {
+ .start = IXP4XX_NPEA_BASE_PHYS,
+ .end = IXP4XX_NPEA_BASE_PHYS + 0xfff,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct resource res_npeb = {
+ .start = IXP4XX_NPEB_BASE_PHYS,
+ .end = IXP4XX_NPEB_BASE_PHYS + 0xfff,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct resource res_npec = {
+ .start = IXP4XX_NPEC_BASE_PHYS,
+ .end = IXP4XX_NPEC_BASE_PHYS + 0xfff,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device dev_npea = {
+ .name = "ixp4xx_npe",
+ .id = 0,
+ .dev.platform_data = &npea,
+ .num_resources = 1,
+ .resource = &res_npea,
+};
+
+static struct platform_device dev_npeb = {
+ .name = "ixp4xx_npe",
+ .id = 1,
+ .dev.platform_data = &npeb,
+ .num_resources = 1,
+ .resource = &res_npeb,
+};
+
+static struct platform_device dev_npec = {
+ .name = "ixp4xx_npe",
+ .id = 2,
+ .dev.platform_data = &npec,
+ .num_resources = 1,
+ .resource = &res_npec,
+};
+
+/* QMGR */
+static struct resource res_qmgr[] = {
+{
+ .start = IXP4XX_QMGR_BASE_PHYS,
+ .end = IXP4XX_QMGR_BASE_PHYS + IXP4XX_QMGR_REGION_SIZE -1,
+ .flags = IORESOURCE_MEM,
+}, {
+ .start = IRQ_IXP4XX_QM1,
+ .flags = IORESOURCE_IRQ,
+} };
+
+static struct platform_device qmgr = {
+ .name = "ixp4xx_qmgr",
+ .id = 0,
+ .dev = {
+ .coherent_dma_mask = DMA_32BIT_MASK,
+ },
+ .num_resources = ARRAY_SIZE(res_qmgr),
+ .resource = res_qmgr,
+};
+
unsigned long ixp4xx_exp_bus_size;
EXPORT_SYMBOL(ixp4xx_exp_bus_size);
@@ -378,8 +462,19 @@
break;
}
}
+ npeb.inst_size = 0x1000;
+ npec.inst_size = 0x1000;
}
+ platform_device_register(&qmgr);
+
+ if (ix_fuse() & IX_FUSE_NPEA)
+ platform_device_register(&dev_npea);
+ if (ix_fuse() & IX_FUSE_NPEB)
+ platform_device_register(&dev_npeb);
+ if (ix_fuse() & IX_FUSE_NPEC)
+ platform_device_register(&dev_npec);
+
printk("IXP4xx: Using %luMiB expansion bus window size\n",
ixp4xx_exp_bus_size >> 20);
}
Index: linux-2.6.21-rc1-arm/arch/arm/mach-ixp4xx/ixdp425-setup.c
===================================================================
--- linux-2.6.21-rc1-arm.orig/arch/arm/mach-ixp4xx/ixdp425-setup.c 2007-02-21 02:24:18.000000000 -0800
+++ linux-2.6.21-rc1-arm/arch/arm/mach-ixp4xx/ixdp425-setup.c 2007-02-21 02:24:35.000000000 -0800
@@ -101,10 +101,59 @@
.resource = ixdp425_uart_resources
};
+/* MACs */
+static struct resource res_mac0 = {
+ .start = IXP4XX_EthB_BASE_PHYS,
+ .end = IXP4XX_EthB_BASE_PHYS + 0x1ff,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct resource res_mac1 = {
+ .start = IXP4XX_EthC_BASE_PHYS,
+ .end = IXP4XX_EthC_BASE_PHYS + 0x1ff,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct mac_plat_info plat_mac0 = {
+ .npe_id = 1,
+ .phy_id = 0,
+ .eth_id = 0,
+ .rxq_id = 27,
+ .txq_id = 24,
+ .rxdoneq_id = 4,
+};
+
+static struct mac_plat_info plat_mac1 = {
+ .npe_id = 2,
+ .phy_id = 1,
+ .eth_id = 1,
+ .rxq_id = 28,
+ .txq_id = 25,
+ .rxdoneq_id = 5,
+};
+
+static struct platform_device mac0 = {
+ .name = "ixp4xx_mac",
+ .id = 0,
+ .dev.platform_data = &plat_mac0,
+ .num_resources = 1,
+ .resource = &res_mac0,
+};
+
+static struct platform_device mac1 = {
+ .name = "ixp4xx_mac",
+ .id = 1,
+ .dev.platform_data = &plat_mac1,
+ .num_resources = 1,
+ .resource = &res_mac1,
+};
+
static struct platform_device *ixdp425_devices[] __initdata = {
&ixdp425_i2c_controller,
&ixdp425_flash,
- &ixdp425_uart
+ &ixdp425_uart,
+ &mac0,
+ &mac1,
};
static void __init ixdp425_init(void)
Index: linux-2.6.21-rc1-arm/drivers/net/Kconfig
===================================================================
--- linux-2.6.21-rc1-arm.orig/drivers/net/Kconfig 2007-02-21 02:24:18.000000000 -0800
+++ linux-2.6.21-rc1-arm/drivers/net/Kconfig 2007-02-21 02:24:35.000000000 -0800
@@ -201,6 +201,8 @@
source "drivers/net/arm/Kconfig"
+source "drivers/net/ixp4xx/Kconfig"
+
config MACE
tristate "MACE (Power Mac ethernet) support"
depends on NET_ETHERNET && PPC_PMAC && PPC32
Index: linux-2.6.21-rc1-arm/drivers/net/Makefile
===================================================================
--- linux-2.6.21-rc1-arm.orig/drivers/net/Makefile 2007-02-21 02:24:18.000000000 -0800
+++ linux-2.6.21-rc1-arm/drivers/net/Makefile 2007-02-21 02:24:35.000000000 -0800
@@ -212,6 +212,7 @@
obj-$(CONFIG_IRDA) += irda/
obj-$(CONFIG_ETRAX_ETHERNET) += cris/
obj-$(CONFIG_ENP2611_MSF_NET) += ixp2000/
+obj-$(CONFIG_IXP4XX_NPE) += ixp4xx/
obj-$(CONFIG_NETCONSOLE) += netconsole.o
Index: linux-2.6.21-rc1-arm/drivers/net/ixp4xx/Kconfig
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.21-rc1-arm/drivers/net/ixp4xx/Kconfig 2007-02-21 02:24:35.000000000 -0800
@@ -0,0 +1,48 @@
+config IXP4XX_QMGR
+ tristate "IXP4xx Queue Manager support"
+ depends on ARCH_IXP4XX
+ depends on NET_ETHERNET
+ help
+ The IXP4XX Queue manager is a configurable hardware ringbuffer.
+ It is used by the NPEs to exchange data from and to the CPU.
+ You can either use this OR the Intel Access Library (IAL)
+
+config IXP4XX_NPE
+ tristate "IXP4xx NPE support"
+ depends on ARCH_IXP4XX
+ depends on NET_ETHERNET
+ help
+ The IXP4XX NPE driver supports the 3 CPU co-processors called
+ "Network Processing Engines" (NPE). It adds support fo downloading
+ the Microcode (firmware) via Hotplug or character-special-device.
+ More about this at: Documentation/networking/ixp4xx/README.
+ You can either use this OR the Intel Access Library (IAL)
+
+config IXP4XX_FW_LOAD
+ bool "Use Firmware hotplug for Microcode download"
+ depends on IXP4XX_NPE
+ select HOTPLUG
+ select FW_LOADER
+ help
+ The default hotplug script will load the Firmware from
+ /usr/lib/hotplug/firmware/NPE-[ABC]
+ see Documentation/firmware_class/hotplug-script
+
+config IXP4XX_MAC
+ tristate "IXP4xx MAC support"
+ depends on IXP4XX_NPE
+ depends on IXP4XX_QMGR
+ depends on NET_ETHERNET
+ select MII
+ help
+ The IXP4XX MAC driver supports the MACs on the IXP4XX CPUs.
+ There are 2 on ixp425 and up to 5 on ixdp465.
+ You can either use this OR the Intel Access Library (IAL)
+
+config IXP4XX_CRYPTO
+ tristate "IXP4xx crypto support"
+ depends on IXP4XX_NPE
+ depends on IXP4XX_QMGR
+ help
+ This driver is a generic NPE-crypto access layer.
+ You need additional code in OCF for example.
Index: linux-2.6.21-rc1-arm/drivers/net/ixp4xx/Makefile
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.21-rc1-arm/drivers/net/ixp4xx/Makefile 2007-02-21 02:24:35.000000000 -0800
@@ -0,0 +1,7 @@
+obj-$(CONFIG_IXP4XX_QMGR) += ixp4xx_qmgr.o
+obj-$(CONFIG_IXP4XX_NPE) += ixp4xx_npe.o
+obj-$(CONFIG_IXP4XX_MAC) += ixp4xx_mac.o
+obj-$(CONFIG_IXP4XX_CRYPTO) += ixp4xx_crypto.o
+
+ixp4xx_npe-objs := ucode_dl.o npe_mh.o npe.o
+ixp4xx_mac-objs := mac_driver.o phy.o
Index: linux-2.6.21-rc1-arm/drivers/net/ixp4xx/ixp4xx_crypto.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.21-rc1-arm/drivers/net/ixp4xx/ixp4xx_crypto.c 2007-02-21 02:24:35.000000000 -0800
@@ -0,0 +1,851 @@
+/*
+ * ixp4xx_crypto.c - interface to the HW crypto
+ *
+ * Copyright (C) 2006 Christian Hohnstaedt <chohnstaedt@innominate.com>
+ *
+ * This file is released under the GPLv2
+ */
+
+#include <linux/ixp_qmgr.h>
+#include <linux/ixp_npe.h>
+#include <linux/dma-mapping.h>
+#include <linux/dmapool.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/ixp_crypto.h>
+
+#define SEND_QID 29
+#define RECV_QID 30
+
+#define NPE_ID 2 /* NPE C */
+
+#define QUEUE_SIZE 64
+#define MY_VERSION "0.0.1"
+
+/* local head for all sa_ctx */
+static struct ix_sa_master sa_master;
+
+static const struct ix_hash_algo _hash_algos[] = {
+{
+ .name = "MD5",
+ .cfgword = 0xAA010004,
+ .digest_len = 16,
+ .icv = "\x01\x23\x45\x67\x89\xAB\xCD\xEF"
+ "\xFE\xDC\xBA\x98\x76\x54\x32\x10",
+ .type = HASH_TYPE_MD5,
+},{
+ .name = "SHA1",
+ .cfgword = 0x00000005,
+ .digest_len = 20,
+ .icv = "\x67\x45\x23\x01\xEF\xCD\xAB\x89\x98\xBA"
+ "\xDC\xFE\x10\x32\x54\x76\xC3\xD2\xE1\xF0",
+ .type = HASH_TYPE_SHA1,
+#if 0
+},{
+ .name = "CBC MAC",
+ .digest_len = 64,
+ .aad_len = 48,
+ .type = HASH_TYPE_CBCMAC,
+#endif
+} };
+
+static const struct ix_cipher_algo _cipher_algos[] = {
+{
+ .name = "DES ECB",
+ .cfgword_enc = CIPH_ENCR | MOD_DES | MOD_ECB | KEYLEN_192,
+ .cfgword_dec = CIPH_DECR | MOD_DES | MOD_ECB | KEYLEN_192,
+ .block_len = 8,
+ .type = CIPHER_TYPE_DES,
+ .mode = CIPHER_MODE_ECB,
+},{
+ .name = "DES CBC",
+ .cfgword_enc = CIPH_ENCR | MOD_DES | MOD_CBC_ENC | KEYLEN_192,
+ .cfgword_dec = CIPH_DECR | MOD_DES | MOD_CBC_DEC | KEYLEN_192,
+ .iv_len = 8,
+ .block_len = 8,
+ .type = CIPHER_TYPE_DES,
+ .mode = CIPHER_MODE_CBC,
+},{
+ .name = "3DES ECB",
+ .cfgword_enc = CIPH_ENCR | MOD_TDEA3 | MOD_ECB | KEYLEN_192,
+ .cfgword_dec = CIPH_DECR | MOD_TDEA3 | MOD_ECB | KEYLEN_192,
+ .block_len = 8,
+ .type = CIPHER_TYPE_3DES,
+ .mode = CIPHER_MODE_ECB,
+},{
+ .name = "3DES CBC",
+ .cfgword_enc = CIPH_ENCR | MOD_TDEA3 | MOD_CBC_ENC | KEYLEN_192,
+ .cfgword_dec = CIPH_DECR | MOD_TDEA3 | MOD_CBC_DEC | KEYLEN_192,
+ .iv_len = 8,
+ .block_len = 8,
+ .type = CIPHER_TYPE_3DES,
+ .mode = CIPHER_MODE_CBC,
+},{
+ .name = "AES ECB",
+ .cfgword_enc = CIPH_ENCR | ALGO_AES | MOD_ECB,
+ .cfgword_dec = CIPH_DECR | ALGO_AES | MOD_ECB,
+ .block_len = 16,
+ .type = CIPHER_TYPE_AES,
+ .mode = CIPHER_MODE_ECB,
+},{
+ .name = "AES CBC",
+ .cfgword_enc = CIPH_ENCR | ALGO_AES | MOD_CBC_ENC,
+ .cfgword_dec = CIPH_DECR | ALGO_AES | MOD_CBC_DEC,
+ .block_len = 16,
+ .iv_len = 16,
+ .type = CIPHER_TYPE_AES,
+ .mode = CIPHER_MODE_CBC,
+},{
+ .name = "AES CTR",
+ .cfgword_enc = CIPH_ENCR | ALGO_AES | MOD_CTR,
+ .cfgword_dec = CIPH_ENCR | ALGO_AES | MOD_CTR,
+ .block_len = 16,
+ .iv_len = 16,
+ .type = CIPHER_TYPE_AES,
+ .mode = CIPHER_MODE_CTR,
+#if 0
+},{
+ .name = "AES CCM",
+ .cfgword_enc = CIPH_ENCR | ALGO_AES | MOD_CCM_ENC,
+ .cfgword_dec = CIPH_ENCR | ALGO_AES | MOD_CCM_DEC,
+ .block_len = 16,
+ .iv_len = 16,
+ .type = CIPHER_TYPE_AES,
+ .mode = CIPHER_MODE_CCM,
+#endif
+} };
+
+const struct ix_hash_algo *ix_hash_by_id(int type)
+{
+ int i;
+
+ for(i=0; i<ARRAY_SIZE(_hash_algos); i++) {
+ if (_hash_algos[i].type == type)
+ return _hash_algos + i;
+ }
+ return NULL;
+}
+
+const struct ix_cipher_algo *ix_cipher_by_id(int type, int mode)
+{
+ int i;
+
+ for(i=0; i<ARRAY_SIZE(_cipher_algos); i++) {
+ if (_cipher_algos[i].type==type && _cipher_algos[i].mode==mode)
+ return _cipher_algos + i;
+ }
+ return NULL;
+}
+
+static void irqcb_recv(struct qm_queue *queue);
+
+static int init_sa_master(struct ix_sa_master *master)
+{
+ struct npe_info *npe;
+ int ret = -ENODEV;
+
+ if (! (ix_fuse() & (IX_FUSE_HASH | IX_FUSE_AES | IX_FUSE_DES))) {
+ printk(KERN_ERR "ixp_crypto: No HW crypto available\n");
+ return ret;
+ }
+ memset(master, 0, sizeof(struct ix_sa_master));
+ master->npe_dev = get_npe_by_id(NPE_ID);
+ if (! master->npe_dev)
+ goto err;
+
+ npe = dev_get_drvdata(master->npe_dev);
+
+ if (npe_status(npe) & IX_NPEDL_EXCTL_STATUS_RUN) {
+ switch (npe->img_info[1]) {
+ case 4:
+ printk(KERN_INFO "Crypto AES avaialable\n");
+ break;
+ case 5:
+ printk(KERN_INFO "Crypto AES and CCM avaialable\n");
+ break;
+ default:
+ printk(KERN_WARNING "Current microcode for %s has no"
+ " crypto capabilities\n", npe->plat->name);
+ break;
+ }
+ }
+ rwlock_init(&master->lock);
+ master->dmapool = dma_pool_create("ixp4xx_crypto", master->npe_dev,
+ sizeof(struct npe_crypt_cont), 32, 0);
+ if (!master->dmapool) {
+ ret = -ENOMEM;
+ goto err;
+ }
+ master->sendq = request_queue(SEND_QID, QUEUE_SIZE);
+ if (IS_ERR(master->sendq)) {
+ printk(KERN_ERR "ixp4xx_crypto: Error requesting Q: %d\n",
+ SEND_QID);
+ ret = PTR_ERR(master->sendq);
+ goto err;
+ }
+ master->recvq = request_queue(RECV_QID, QUEUE_SIZE);
+ if (IS_ERR(master->recvq)) {
+ printk(KERN_ERR "ixp4xx_crypto: Error requesting Q: %d\n",
+ RECV_QID);
+ ret = PTR_ERR(master->recvq);
+ release_queue(master->sendq);
+ goto err;
+ }
+
+ master->recvq->irq_cb = irqcb_recv;
+ queue_set_watermarks(master->recvq, 0, 0);
+ queue_set_irq_src(master->recvq, Q_IRQ_ID_NOT_E);
+ queue_enable_irq(master->recvq);
+ printk(KERN_INFO "ixp4xx_crypto " MY_VERSION " registered successfully\n");
+
+ return 0;
+err:
+ if (master->dmapool)
+ dma_pool_destroy(master->dmapool);
+ if (! master->npe_dev)
+ put_device(master->npe_dev);
+ return ret;
+
+}
+
+static void release_sa_master(struct ix_sa_master *master)
+{
+ struct npe_crypt_cont *cont;
+ unsigned long flags;
+
+ write_lock_irqsave(&master->lock, flags);
+ while (master->pool) {
+ cont = master->pool;
+ master->pool = cont->next;
+ dma_pool_free(master->dmapool, cont, cont->phys);
+ master->pool_size--;
+ }
+ write_unlock_irqrestore(&master->lock, flags);
+ if (master->pool_size) {
+ printk(KERN_ERR "ixp4xx_crypto: %d items lost from DMA pool\n",
+ master->pool_size);
+ }
+
+ dma_pool_destroy(master->dmapool);
+ release_queue(master->sendq);
+ release_queue(master->recvq);
+ return_npe_dev(master->npe_dev);
+}
+
+static struct npe_crypt_cont *ix_sa_get_cont(struct ix_sa_master *master)
+{
+ unsigned long flags;
+ struct npe_crypt_cont *cont;
+ dma_addr_t handle;
+
+ write_lock_irqsave(&master->lock, flags);
+ if (!master->pool) {
+ cont = dma_pool_alloc(master->dmapool, GFP_ATOMIC, &handle);
+ if (cont) {
+ master->pool_size++;
+ cont->phys = handle;
+ cont->virt = cont;
+ }
+ } else {
+ cont = master->pool;
+ master->pool = cont->next;
+ }
+ write_unlock_irqrestore(&master->lock, flags);
+ return cont;
+}
+
+static void
+ix_sa_return_cont(struct ix_sa_master *master,struct npe_crypt_cont *cont)
+{
+ unsigned long flags;
+
+ write_lock_irqsave(&master->lock, flags);
+ cont->next = master->pool;
+ master->pool = cont;
+ write_unlock_irqrestore(&master->lock, flags);
+}
+
+static void free_sa_dir(struct ix_sa_ctx *sa_ctx, struct ix_sa_dir *dir)
+{
+ memset(dir->npe_ctx, 0, NPE_CTX_LEN);
+ dma_pool_free(sa_ctx->master->dmapool, dir->npe_ctx,
+ dir->npe_ctx_phys);
+}
+
+static void ix_sa_ctx_destroy(struct ix_sa_ctx *sa_ctx)
+{
+ BUG_ON(sa_ctx->state != STATE_UNLOADING);
+ free_sa_dir(sa_ctx, &sa_ctx->encrypt);
+ free_sa_dir(sa_ctx, &sa_ctx->decrypt);
+ kfree(sa_ctx);
+ module_put(THIS_MODULE);
+}
+
+static void recv_pack(struct qm_queue *queue, u32 phys)
+{
+ struct ix_sa_ctx *sa_ctx;
+ struct npe_crypt_cont *cr_cont;
+ struct npe_cont *cont;
+ int failed;
+
+ failed = phys & 0x1;
+ phys &= ~0x3;
+
+ cr_cont = dma_to_virt(queue->dev, phys);
+ cr_cont = cr_cont->virt;
+ sa_ctx = cr_cont->ctl.crypt.sa_ctx;
+
+ phys = npe_to_cpu32(cr_cont->ctl.crypt.src_buf);
+ if (phys) {
+ cont = dma_to_virt(queue->dev, phys);
+ cont = cont->virt;
+ } else {
+ cont = NULL;
+ }
+ if (cr_cont->ctl.crypt.oper_type == OP_PERFORM) {
+ dma_unmap_single(sa_ctx->master->npe_dev,
+ cont->eth.phys_addr,
+ cont->eth.buf_len,
+ DMA_BIDIRECTIONAL);
+ if (sa_ctx->perf_cb)
+ sa_ctx->perf_cb(sa_ctx, cont->data, failed);
+ qmgr_return_cont(dev_get_drvdata(queue->dev), cont);
+ ix_sa_return_cont(sa_ctx->master, cr_cont);
+ if (atomic_dec_and_test(&sa_ctx->use_cnt))
+ ix_sa_ctx_destroy(sa_ctx);
+ return;
+ }
+
+ /* We are registering */
+ switch (cr_cont->ctl.crypt.mode) {
+ case NPE_OP_HASH_GEN_ICV:
+ /* 1 out of 2 HMAC preparation operations completed */
+ dma_unmap_single(sa_ctx->master->npe_dev,
+ cont->eth.phys_addr,
+ cont->eth.buf_len,
+ DMA_TO_DEVICE);
+ kfree(cont->data);
+ qmgr_return_cont(dev_get_drvdata(queue->dev), cont);
+ break;
+ case NPE_OP_ENC_GEN_KEY:
+ memcpy(sa_ctx->decrypt.npe_ctx + sizeof(u32),
+ sa_ctx->rev_aes->ctl.rev_aes_key + sizeof(u32),
+ sa_ctx->c_key.len);
+ /* REV AES data not needed anymore, free it */
+ ix_sa_return_cont(sa_ctx->master, sa_ctx->rev_aes);
+ sa_ctx->rev_aes = NULL;
+ break;
+ default:
+ printk(KERN_ERR "Unknown crypt-register mode: %x\n",
+ cr_cont->ctl.crypt.mode);
+
+ }
+ if (cr_cont->ctl.crypt.oper_type == OP_REG_DONE) {
+ if (sa_ctx->state == STATE_UNREGISTERED)
+ sa_ctx->state = STATE_REGISTERED;
+ if (sa_ctx->reg_cb)
+ sa_ctx->reg_cb(sa_ctx, failed);
+ }
+ ix_sa_return_cont(sa_ctx->master, cr_cont);
+ if (atomic_dec_and_test(&sa_ctx->use_cnt))
+ ix_sa_ctx_destroy(sa_ctx);
+}
+
+static void irqcb_recv(struct qm_queue *queue)
+{
+ u32 phys;
+
+ queue_ack_irq(queue);
+ while ((phys = queue_get_entry(queue)))
+ recv_pack(queue, phys);
+}
+
+static int init_sa_dir(struct ix_sa_ctx *sa_ctx, struct ix_sa_dir *dir)
+{
+ dir->npe_ctx = dma_pool_alloc(sa_ctx->master->dmapool,
+ sa_ctx->gfp_flags, &dir->npe_ctx_phys);
+ if (!dir->npe_ctx) {
+ return 1;
+ }
+ memset(dir->npe_ctx, 0, NPE_CTX_LEN);
+ return 0;
+}
+
+struct ix_sa_ctx *ix_sa_ctx_new(int priv_len, gfp_t flags)
+{
+ struct ix_sa_ctx *sa_ctx;
+ struct ix_sa_master *master = &sa_master;
+ struct npe_info *npe = dev_get_drvdata(master->npe_dev);
+
+ /* first check if Microcode was downloaded into this NPE */
+ if (!( npe_status(npe) & IX_NPEDL_EXCTL_STATUS_RUN)) {
+ printk(KERN_ERR "%s not running\n", npe->plat->name);
+ return NULL;
+ }
+ switch (npe->img_info[1]) {
+ case 4:
+ case 5:
+ break;
+ default:
+ /* No crypto Microcode */
+ return NULL;
+ }
+ if (!try_module_get(THIS_MODULE)) {
+ return NULL;
+ }
+
+ sa_ctx = kzalloc(sizeof(struct ix_sa_ctx) + priv_len, flags);
+ if (!sa_ctx) {
+ goto err_put;
+ }
+
+ sa_ctx->master = master;
+ sa_ctx->gfp_flags = flags;
+
+ if (init_sa_dir(sa_ctx, &sa_ctx->encrypt))
+ goto err_free;
+ if (init_sa_dir(sa_ctx, &sa_ctx->decrypt)) {
+ free_sa_dir(sa_ctx, &sa_ctx->encrypt);
+ goto err_free;
+ }
+ if (priv_len)
+ sa_ctx->priv = sa_ctx + 1;
+
+ atomic_set(&sa_ctx->use_cnt, 1);
+ return sa_ctx;
+
+err_free:
+ kfree(sa_ctx);
+err_put:
+ module_put(THIS_MODULE);
+ return NULL;
+}
+
+void ix_sa_ctx_free(struct ix_sa_ctx *sa_ctx)
+{
+ sa_ctx->state = STATE_UNLOADING;
+ if (atomic_dec_and_test(&sa_ctx->use_cnt))
+ ix_sa_ctx_destroy(sa_ctx);
+ else
+ printk("ix_sa_ctx_free -> delayed: %p %d\n",
+ sa_ctx, atomic_read(&sa_ctx->use_cnt));
+}
+
+/* http://www.ietf.org/rfc/rfc2104.txt */
+#define HMAC_IPAD_VALUE 0x36
+#define HMAC_OPAD_VALUE 0x5C
+#define PAD_BLOCKLEN 64
+
+static int register_chain_var(struct ix_sa_ctx *sa_ctx,
+ unsigned char *pad, u32 target, int init_len, u32 ctx_addr, int oper)
+{
+ struct npe_crypt_cont *cr_cont;
+ struct npe_cont *cont;
+
+ cr_cont = ix_sa_get_cont(sa_ctx->master);
+ if (!cr_cont)
+ return -ENOMEM;
+
+ cr_cont->ctl.crypt.sa_ctx = sa_ctx;
+ cr_cont->ctl.crypt.auth_offs = 0;
+ cr_cont->ctl.crypt.auth_len =cpu_to_npe16(PAD_BLOCKLEN);
+ cr_cont->ctl.crypt.crypto_ctx = cpu_to_npe32(ctx_addr);
+
+ cont = qmgr_get_cont(dev_get_drvdata(sa_ctx->master->sendq->dev));
+ if (!cont) {
+ ix_sa_return_cont(sa_ctx->master, cr_cont);
+ return -ENOMEM;
+ }
+
+ cont->data = pad;
+ cont->eth.next = 0;
+ cont->eth.buf_len = cpu_to_npe16(PAD_BLOCKLEN);
+ cont->eth.pkt_len = 0;
+
+ cont->eth.phys_addr = cpu_to_npe32(dma_map_single(
+ sa_ctx->master->npe_dev, pad, PAD_BLOCKLEN, DMA_TO_DEVICE));
+
+ cr_cont->ctl.crypt.src_buf = cpu_to_npe32(cont->phys);
+ cr_cont->ctl.crypt.oper_type = oper;
+
+ cr_cont->ctl.crypt.addr.icv = cpu_to_npe32(target);
+ cr_cont->ctl.crypt.mode = NPE_OP_HASH_GEN_ICV;
+ cr_cont->ctl.crypt.init_len = init_len;
+
+ atomic_inc(&sa_ctx->use_cnt);
+ queue_put_entry(sa_ctx->master->sendq, cr_cont->phys);
+ if (queue_stat(sa_ctx->master->sendq) == 2) { /* overflow */
+ atomic_dec(&sa_ctx->use_cnt);
+ qmgr_return_cont(dev_get_drvdata(sa_ctx->master->sendq->dev),
+ cont);
+ ix_sa_return_cont(sa_ctx->master, cr_cont);
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+/* Return value
+ * 0 if nothing registered,
+ * 1 if something registered and
+ * < 0 on error
+ */
+static int ix_sa_ctx_setup_auth(struct ix_sa_ctx *sa_ctx,
+ const struct ix_hash_algo *algo, int len, int oper, int encrypt)
+{
+ unsigned char *ipad, *opad;
+ u32 itarget, otarget, ctx_addr;
+ unsigned char *cinfo;
+ int init_len, i, ret = 0;
+ struct qm_qmgr *qmgr;
+ struct ix_sa_dir *dir;
+ u32 cfgword;
+
+ dir = encrypt ? &sa_ctx->encrypt : &sa_ctx->decrypt;
+ cinfo = dir->npe_ctx + dir->npe_ctx_idx;
+
+ qmgr = dev_get_drvdata(sa_ctx->master->sendq->dev);
+
+ cinfo = dir->npe_ctx + dir->npe_ctx_idx;
+ sa_ctx->h_algo = algo;
+
+ if (!algo) {
+ dir->npe_mode |= NPE_OP_HMAC_DISABLE;
+ return 0;
+ }
+ if (algo->type == HASH_TYPE_CBCMAC) {
+ dir->npe_mode |= NPE_OP_CCM_ENABLE | NPE_OP_HMAC_DISABLE;
+ return 0;
+ }
+ if (sa_ctx->h_key.len > 64 || sa_ctx->h_key.len < algo->digest_len)
+ return -EINVAL;
+ if (len > algo->digest_len || (len % 4))
+ return -EINVAL;
+ if (!len)
+ len = algo->digest_len;
+
+ sa_ctx->digest_len = len;
+
+ /* write cfg word to cryptinfo */
+ cfgword = algo->cfgword | ((len/4) << 8);
+ *(u32*)cinfo = cpu_to_be32(cfgword);
+ cinfo += sizeof(cfgword);
+
+ /* write ICV to cryptinfo */
+ memcpy(cinfo, algo->icv, algo->digest_len);
+ cinfo += algo->digest_len;
+
+ itarget = dir->npe_ctx_phys + dir->npe_ctx_idx
+ + sizeof(algo->cfgword);
+ otarget = itarget + algo->digest_len;
+
+ opad = kzalloc(PAD_BLOCKLEN, sa_ctx->gfp_flags | GFP_DMA);
+ if (!opad) {
+ return -ENOMEM;
+ }
+ ipad = kzalloc(PAD_BLOCKLEN, sa_ctx->gfp_flags | GFP_DMA);
+ if (!ipad) {
+ kfree(opad);
+ return -ENOMEM;
+ }
+ memcpy(ipad, sa_ctx->h_key.key, sa_ctx->h_key.len);
+ memcpy(opad, sa_ctx->h_key.key, sa_ctx->h_key.len);
+ for (i = 0; i < PAD_BLOCKLEN; i++) {
+ ipad[i] ^= HMAC_IPAD_VALUE;
+ opad[i] ^= HMAC_OPAD_VALUE;
+ }
+ init_len = cinfo - (dir->npe_ctx + dir->npe_ctx_idx);
+ ctx_addr = dir->npe_ctx_phys + dir->npe_ctx_idx;
+
+ dir->npe_ctx_idx += init_len;
+ dir->npe_mode |= NPE_OP_HASH_ENABLE;
+
+ if (!encrypt)
+ dir->npe_mode |= NPE_OP_HASH_VERIFY;
+
+ /* register first chainvar */
+ ret = register_chain_var(sa_ctx, opad, otarget,
+ init_len, ctx_addr, OP_REGISTER);
+ if (ret) {
+ kfree(ipad);
+ kfree(opad);
+ return ret;
+ }
+
+ /* register second chainvar */
+ ret = register_chain_var(sa_ctx, ipad, itarget,
+ init_len, ctx_addr, oper);
+ if (ret) {
+ kfree(ipad);
+ return ret;
+ }
+
+ return 1;
+}
+
+static int gen_rev_aes_key(struct ix_sa_ctx *sa_ctx,
+ u32 keylen_cfg, int cipher_op)
+{
+ unsigned char *cinfo;
+ struct npe_crypt_cont *cr_cont;
+
+ keylen_cfg |= CIPH_ENCR | ALGO_AES | MOD_ECB;
+ sa_ctx->rev_aes = ix_sa_get_cont(sa_ctx->master);
+ if (!sa_ctx->rev_aes)
+ return -ENOMEM;
+
+ cinfo = sa_ctx->rev_aes->ctl.rev_aes_key;
+ *(u32*)cinfo = cpu_to_be32(keylen_cfg);
+ cinfo += sizeof(keylen_cfg);
+
+ memcpy(cinfo, sa_ctx->c_key.key, sa_ctx->c_key.len);
+
+ cr_cont = ix_sa_get_cont(sa_ctx->master);
+ if (!cr_cont) {
+ ix_sa_return_cont(sa_ctx->master, sa_ctx->rev_aes);
+ sa_ctx->rev_aes = NULL;
+ return -ENOMEM;
+ }
+ cr_cont->ctl.crypt.sa_ctx = sa_ctx;
+ cr_cont->ctl.crypt.oper_type = cipher_op;
+
+ cr_cont->ctl.crypt.crypt_offs = 0;
+ cr_cont->ctl.crypt.crypt_len = cpu_to_npe16(AES_BLOCK128);
+ cr_cont->ctl.crypt.addr.rev_aes = cpu_to_npe32(
+ sa_ctx->rev_aes->phys + sizeof(keylen_cfg));
+
+ cr_cont->ctl.crypt.src_buf = 0;
+ cr_cont->ctl.crypt.crypto_ctx = cpu_to_npe32(sa_ctx->rev_aes->phys);
+ cr_cont->ctl.crypt.mode = NPE_OP_ENC_GEN_KEY;
+ cr_cont->ctl.crypt.init_len = sa_ctx->decrypt.npe_ctx_idx;
+
+ atomic_inc(&sa_ctx->use_cnt);
+ queue_put_entry(sa_ctx->master->sendq, cr_cont->phys);
+ if (queue_stat(sa_ctx->master->sendq) == 2) { /* overflow */
+ atomic_dec(&sa_ctx->use_cnt);
+ ix_sa_return_cont(sa_ctx->master, cr_cont);
+ ix_sa_return_cont(sa_ctx->master, sa_ctx->rev_aes);
+ sa_ctx->rev_aes = NULL;
+ return -ENOMEM;
+ }
+
+ return 1;
+}
+
+/* Return value
+ * 0 if nothing registered,
+ * 1 if something registered and
+ * < 0 on error
+ */
+static int ix_sa_ctx_setup_cipher(struct ix_sa_ctx *sa_ctx,
+ const struct ix_cipher_algo *algo, int cipher_op, int encrypt)
+{
+ unsigned char *cinfo;
+ int keylen, init_len;
+ u32 cipher_cfg;
+ u32 keylen_cfg = 0;
+ struct ix_sa_dir *dir;
+
+ dir = encrypt ? &sa_ctx->encrypt : &sa_ctx->decrypt;
+ cinfo = dir->npe_ctx + dir->npe_ctx_idx;
+
+ sa_ctx->c_algo = algo;
+
+ if (!algo)
+ return 0;
+
+ if (algo->type == CIPHER_TYPE_DES && sa_ctx->c_key.len != 8)
+ return -EINVAL;
+
+ if (algo->type == CIPHER_TYPE_3DES && sa_ctx->c_key.len != 24)
+ return -EINVAL;
+
+ keylen = 24;
+
+ if (encrypt) {
+ cipher_cfg = algo->cfgword_enc;
+ dir->npe_mode |= NPE_OP_CRYPT_ENCRYPT;
+ } else {
+ cipher_cfg = algo->cfgword_dec;
+ }
+ if (algo->type == CIPHER_TYPE_AES) {
+ switch (sa_ctx->c_key.len) {
+ case 16: keylen_cfg = MOD_AES128 | KEYLEN_128; break;
+ case 24: keylen_cfg = MOD_AES192 | KEYLEN_192; break;
+ case 32: keylen_cfg = MOD_AES256 | KEYLEN_256; break;
+ default: return -EINVAL;
+ }
+ keylen = sa_ctx->c_key.len;
+ cipher_cfg |= keylen_cfg;
+ }
+
+ /* write cfg word to cryptinfo */
+ *(u32*)cinfo = cpu_to_be32(cipher_cfg);
+ cinfo += sizeof(cipher_cfg);
+
+ /* write cipher key to cryptinfo */
+ memcpy(cinfo, sa_ctx->c_key.key, sa_ctx->c_key.len);
+ cinfo += keylen;
+
+ init_len = cinfo - (dir->npe_ctx + dir->npe_ctx_idx);
+ dir->npe_ctx_idx += init_len;
+
+ dir->npe_mode |= NPE_OP_CRYPT_ENABLE;
+
+ if (algo->type == CIPHER_TYPE_AES && !encrypt) {
+ return gen_rev_aes_key(sa_ctx, keylen_cfg, cipher_op);
+ }
+
+ return 0;
+}
+
+/* returns 0 on OK, <0 on error and 1 on overflow */
+int ix_sa_crypto_perform(struct ix_sa_ctx *sa_ctx, u8 *data, void *ptr,
+ int datalen, int c_offs, int c_len, int a_offs, int a_len,
+ int hmac, char *iv, int encrypt)
+{
+ struct npe_crypt_cont *cr_cont;
+ struct npe_cont *cont;
+ u32 data_phys;
+ int ret = -ENOMEM;
+ struct ix_sa_dir *dir;
+
+ dir = encrypt ? &sa_ctx->encrypt : &sa_ctx->decrypt;
+
+ if (sa_ctx->state != STATE_REGISTERED)
+ return -ENOENT;
+
+ cr_cont = ix_sa_get_cont(sa_ctx->master);
+ if (!cr_cont)
+ return ret;
+
+ cr_cont->ctl.crypt.sa_ctx = sa_ctx;
+ cr_cont->ctl.crypt.crypto_ctx = cpu_to_npe32(dir->npe_ctx_phys);
+ cr_cont->ctl.crypt.oper_type = OP_PERFORM;
+ cr_cont->ctl.crypt.mode = dir->npe_mode;
+ cr_cont->ctl.crypt.init_len = dir->npe_ctx_idx;
+
+ if (sa_ctx->c_algo) {
+ cr_cont->ctl.crypt.crypt_offs = cpu_to_npe16(c_offs);
+ cr_cont->ctl.crypt.crypt_len = cpu_to_npe16(c_len);
+ if (sa_ctx->c_algo->iv_len) {
+ if (!iv) {
+ ret = -EINVAL;
+ goto err_cr;
+ }
+ memcpy(cr_cont->ctl.crypt.iv, iv,
+ sa_ctx->c_algo->iv_len);
+ }
+ }
+
+ if (sa_ctx->h_algo) {
+ /* prepare hashing */
+ cr_cont->ctl.crypt.auth_offs = cpu_to_npe16(a_offs);
+ cr_cont->ctl.crypt.auth_len = cpu_to_npe16(a_len);
+ }
+
+ data_phys = dma_map_single(sa_ctx->master->npe_dev,
+ data, datalen, DMA_BIDIRECTIONAL);
+ if (hmac)
+ cr_cont->ctl.crypt.addr.icv = cpu_to_npe32(data_phys + hmac);
+
+ /* Prepare the data ptr */
+ cont = qmgr_get_cont(dev_get_drvdata(sa_ctx->master->sendq->dev));
+ if (!cont) {
+ goto err_unmap;
+ }
+
+ cont->data = ptr;
+ cont->eth.next = 0;
+ cont->eth.buf_len = cpu_to_npe16(datalen);
+ cont->eth.pkt_len = 0;
+
+ cont->eth.phys_addr = cpu_to_npe32(data_phys);
+ cr_cont->ctl.crypt.src_buf = cpu_to_npe32(cont->phys);
+
+ atomic_inc(&sa_ctx->use_cnt);
+ queue_put_entry(sa_ctx->master->sendq, cr_cont->phys);
+ if (queue_stat(sa_ctx->master->sendq) != 2) {
+ return 0;
+ }
+
+ /* overflow */
+ printk("%s: Overflow\n", __FUNCTION__);
+ ret = -EAGAIN;
+ atomic_dec(&sa_ctx->use_cnt);
+ qmgr_return_cont(dev_get_drvdata(sa_ctx->master->sendq->dev), cont);
+
+err_unmap:
+ dma_unmap_single(sa_ctx->master->npe_dev, data_phys, datalen,
+ DMA_BIDIRECTIONAL);
+err_cr:
+ ix_sa_return_cont(sa_ctx->master, cr_cont);
+
+ return ret;
+}
+
+int ix_sa_ctx_setup_cipher_auth(struct ix_sa_ctx *sa_ctx,
+ const struct ix_cipher_algo *cipher,
+ const struct ix_hash_algo *auth, int len)
+{
+ int ret = 0, sum = 0;
+ int cipher_op;
+
+ if (sa_ctx->state != STATE_UNREGISTERED)
+ return -ENOENT;
+
+ atomic_inc(&sa_ctx->use_cnt);
+
+ cipher_op = auth ? OP_REGISTER : OP_REG_DONE;
+ if ((ret = ix_sa_ctx_setup_cipher(sa_ctx, cipher, OP_REGISTER, 1)) < 0)
+ goto out;
+ sum += ret;
+ if ((ret = ix_sa_ctx_setup_cipher(sa_ctx, cipher, cipher_op, 0)) < 0)
+ goto out;
+ sum += ret;
+ if ((ret = ix_sa_ctx_setup_auth(sa_ctx, auth, len, OP_REGISTER, 1)) < 0)
+ goto out;
+ sum += ret;
+ if ((ret = ix_sa_ctx_setup_auth(sa_ctx, auth, len, OP_REG_DONE, 0)) < 0)
+ goto out;
+ sum += ret;
+
+ /* Nothing registered ?
+ * Ok, then we are done and call the callback here.
+ */
+ if (!sum) {
+ if (sa_ctx->state == STATE_UNREGISTERED)
+ sa_ctx->state = STATE_REGISTERED;
+ if (sa_ctx->reg_cb)
+ sa_ctx->reg_cb(sa_ctx, 0);
+ }
+out:
+ atomic_dec(&sa_ctx->use_cnt);
+ return ret;
+}
+
+static int __init init_crypto(void)
+{
+ return init_sa_master(&sa_master);
+}
+
+static void __exit finish_crypto(void)
+{
+ release_sa_master(&sa_master);
+}
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Christian Hohnstaedt <chohnstaedt@innominate.com>");
+
+EXPORT_SYMBOL(ix_hash_by_id);
+EXPORT_SYMBOL(ix_cipher_by_id);
+
+EXPORT_SYMBOL(ix_sa_ctx_new);
+EXPORT_SYMBOL(ix_sa_ctx_free);
+EXPORT_SYMBOL(ix_sa_ctx_setup_cipher_auth);
+EXPORT_SYMBOL(ix_sa_crypto_perform);
+
+module_init(init_crypto);
+module_exit(finish_crypto);
+
Index: linux-2.6.21-rc1-arm/drivers/net/ixp4xx/ixp4xx_qmgr.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.21-rc1-arm/drivers/net/ixp4xx/ixp4xx_qmgr.c 2007-02-21 02:24:35.000000000 -0800
@@ -0,0 +1,474 @@
+/*
+ * qmgr.c - reimplementation of the queue configuration interface.
+ *
+ * Copyright (C) 2006 Christian Hohnstaedt <chohnstaedt@innominate.com>
+ *
+ * This file is released under the GPLv2
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/dmapool.h>
+#include <linux/interrupt.h>
+#include <linux/err.h>
+#include <linux/delay.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+
+#include <linux/ixp_qmgr.h>
+#include <linux/ixp_npe.h>
+
+#define IXQMGR_VERSION "IXP4XX Q Manager 0.2.1"
+
+static struct device *qmgr_dev = NULL;
+
+static int poll_freq = 4000;
+static int poll_enable = 0;
+static u32 timer_countup_ticks;
+
+module_param(poll_freq, int, 0644);
+module_param(poll_enable, int, 0644);
+
+int queue_len(struct qm_queue *queue)
+{
+ struct qm_qmgr *qmgr = dev_get_drvdata(queue->dev);
+ int diff, offs;
+ u32 val;
+
+ offs = queue->id/8 + QUE_LOW_STAT0;
+ val = *(qmgr->addr + IX_QMGR_QCFG_BASE + queue->id);
+
+ diff = (val - (val >> 7)) & 0x7f;
+ if (!diff) {
+ /* diff == 0 means either empty or full, must look at STAT0 */
+ if ((*(qmgr->addr + offs) >> ((queue->id % 8)*4)) & 0x04)
+ diff = queue->len;
+ }
+ return diff;
+}
+
+static int request_pool(struct device *dev, int count)
+{
+ int i;
+ struct npe_cont *cont;
+ struct qm_qmgr *qmgr = dev_get_drvdata(dev);
+ dma_addr_t handle;
+
+ for (i=0; i<count; i++) {
+ cont = dma_pool_alloc(qmgr->dmapool, GFP_KERNEL, &handle);
+ if (!cont) {
+ return -ENOMEM;
+ }
+ cont->phys = handle;
+ cont->virt = cont;
+ write_lock(&qmgr->lock);
+ cont->next = qmgr->pool;
+ qmgr->pool = cont;
+ write_unlock(&qmgr->lock);
+ }
+ return 0;
+}
+
+static int free_pool(struct device *dev, int count)
+{
+ int i;
+ struct npe_cont *cont;
+ struct qm_qmgr *qmgr = dev_get_drvdata(dev);
+
+ for (i=0; i<count; i++) {
+ write_lock(&qmgr->lock);
+ cont = qmgr->pool;
+ if (!cont) {
+ write_unlock(&qmgr->lock);
+ return -1;
+ }
+ qmgr->pool = cont->next;
+ write_unlock(&qmgr->lock);
+ dma_pool_free(qmgr->dmapool, cont, cont->phys);
+ }
+ return 0;
+}
+
+static int get_free_qspace(struct qm_qmgr *qmgr, int len)
+{
+ int words = (qmgr->res->end - qmgr->res->start + 1) / 4 -
+ IX_QMGR_SRAM_SPACE;
+ int i,q;
+
+ for (i=0; i<words; i+=len) {
+ for (q=0; q<MAX_QUEUES; q++) {
+ struct qm_queue *qu = qmgr->queues[q];
+ if (!qu)
+ continue;
+ if ((qu->addr + qu->len > i) && (qu->addr < i + len))
+ break;
+ }
+ if (q == MAX_QUEUES) {
+ /* we have a free address */
+ return i;
+ }
+ }
+ return -1;
+}
+
+static inline int _log2(int x)
+{
+ int r=0;
+ while(x>>=1)
+ r++;
+ return r;
+}
+
+/*
+ * 32bit Config registers at IX_QMGR_QUECONFIG_BASE_OFFSET[Qid]
+ * 0 - 6 WRPTR Word offset to baseaddr (index 0 .. BSIZE-1)
+ * 7 -13 RDPTR ''
+ * 14 -21 BADDR baseaddr = (offset to IX_QMGR_QUEBUFFER_SPACE_OFFSET) >> 6
+ * 22 -23 ESIZE entrySizeInWords (always 00 because entrySizeInWords==1)
+ * 24 -25 BSIZE qSizeInWords 00=16,01=32,10=64,11=128
+ * 26 -28 NE nearly empty
+ * 29 -31 NF nearly full
+ */
+static int conf_q_regs(struct qm_queue *queue)
+{
+ int bsize = _log2(queue->len/16);
+ int baddr = queue->addr + IX_QMGR_QCFG_SIZE;
+
+ /* +2, because baddr is in words and not in bytes */
+ queue_write_cfg_reg(queue, (bsize << 24) | (baddr<<(14-6+2)) );
+
+ return 0;
+}
+
+static void pmu_timer_restart(void)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ __asm__(" mcr p14,0,%0,c1,c1,0\n" /* write current counter */
+ : : "r" (timer_countup_ticks));
+
+ __asm__(" mrc p14,0,r1,c4,c1,0; " /* get int enable register */
+ " orr r1,r1,#1; "
+ " mcr p14,0,r1,c5,c1,0; " /* clear overflow */
+ " mcr p14,0,r1,c4,c1,0\n" /* enable interrupts */
+ : : : "r1");
+
+ local_irq_restore(flags);
+}
+
+static void pmu_timer_init(void)
+{
+ u32 controlRegisterMask =
+ BIT(0) | /* enable counters */
+ BIT(2); /* reset clock counter; */
+
+ /*
+ * Compute the number of xscale cycles needed between each
+ * PMU IRQ. This is done from the result of an OS calibration loop.
+ *
+ * For 533MHz CPU, 533000000 tick/s / 4000 times/sec = 138250
+ * 4000 times/sec = 37 mbufs/interrupt at line rate
+ * The pmu timer is reset to -138250 = 0xfffde3f6, to trigger an IRQ
+ * when this up counter overflows.
+ *
+ * The multiplication gives a number of instructions per second.
+ * which is close to the processor frequency, and then close to the
+ * PMU clock rate.
+ *
+ * 2 is the number of instructions per loop
+ *
+ */
+
+ timer_countup_ticks = - ((loops_per_jiffy * HZ * 2) / poll_freq);
+
+ /* enable the CCNT (clock count) timer from the PMU */
+ __asm__(" mcr p14,0,%0,c0,c1,0\n"
+ : : "r" (controlRegisterMask));
+}
+
+static void pmu_timer_disable(void)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ __asm__(" mrc p14,0,r1,c4,c1,0; " /* get int enable register */
+ " and r1,r1,#0x1e; "
+ " mcr p14,0,r1,c4,c1,0\n" /* disable interrupts */
+ : : : "r1");
+ local_irq_restore(flags);
+}
+
+void queue_set_watermarks(struct qm_queue *queue, unsigned ne, unsigned nf)
+{
+ u32 val;
+ /* calculate the register values
+ * 0->0, 1->1, 2->2, 4->3, 8->4 16->5...*/
+ ne = _log2(ne<<1) & 0x7;
+ nf = _log2(nf<<1) & 0x7;
+
+ /* Mask out old watermarks */
+ val = queue_read_cfg_reg(queue) & ~0xfc000000;
+ queue_write_cfg_reg(queue, val | (ne << 26) | (nf << 29));
+}
+
+int queue_set_irq_src(struct qm_queue *queue, int flag)
+{
+ struct qm_qmgr *qmgr = dev_get_drvdata(queue->dev);
+ u32 reg;
+ int offs, bitoffs;
+
+ /* Q 0-7 are in REG0, 8-15 are in REG1, etc. They occupy 4 bits/Q */
+ offs = queue->id/8 + INT0_SRC_SELREG0;
+ bitoffs = (queue->id % 8)*4;
+
+ reg = *(qmgr->addr + offs) & ~(0xf << bitoffs);
+ *(qmgr->addr + offs) = reg | (flag << bitoffs);
+
+ return 0;
+}
+
+static irqreturn_t irq_qm1(int irq, void *dev_id)
+{
+ struct qm_qmgr *qmgr = dev_id;
+ int offs, reg;
+ struct qm_queue *queue;
+
+ if (poll_enable)
+ pmu_timer_restart();
+
+ reg = *(qmgr->addr + QUE_INT_REG0);
+ while(reg) {
+ /*
+ * count leading zeros. "offs" gets
+ * the amount of leading 0 in "reg"
+ */
+ asm ("clz %0, %1;" : "=r"(offs) : "r"(reg));
+ offs = 31 - offs;
+ reg &= ~(1 << offs);
+ queue = qmgr->queues[offs];
+ if (likely(queue)) {
+ if (likely(queue->irq_cb)) {
+ queue->irq_cb(queue);
+ } else {
+ printk(KERN_ERR "Missing callback for Q %d\n",
+ offs);
+ }
+ } else {
+ printk(KERN_ERR "IRQ for unregistered Q %d\n", offs);
+ }
+ }
+ return IRQ_HANDLED;
+}
+
+struct qm_queue *request_queue(int qid, int len)
+{
+ int ram;
+ struct qm_qmgr *qmgr;
+ struct qm_queue *queue;
+
+ if (!qmgr_dev)
+ return ERR_PTR(-ENODEV);
+
+ if ((qid < 0) || (qid > MAX_QUEUES))
+ return ERR_PTR(-ERANGE);
+
+ switch (len) {
+ case 16:
+ case 32:
+ case 64:
+ case 128: break;
+ default : return ERR_PTR(-EINVAL);
+ }
+
+ qmgr = dev_get_drvdata(qmgr_dev);
+
+ if (qmgr->queues[qid]) {
+ /* not an error, just in use already */
+ return NULL;
+ }
+ if ((ram = get_free_qspace(qmgr, len)) < 0) {
+ printk(KERN_ERR "No free SRAM space for this queue\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ if (!(queue = kzalloc(sizeof(struct qm_queue), GFP_KERNEL)))
+ return ERR_PTR(-ENOMEM);
+
+ if (!try_module_get(THIS_MODULE)) {
+ kfree(queue);
+ return ERR_PTR(-ENODEV);
+ }
+
+ queue->addr = ram;
+ queue->len = len;
+ queue->id = qid;
+ queue->dev = get_device(qmgr_dev);
+ queue->acc_reg = qmgr->addr + (4 * qid);
+ qmgr->queues[qid] = queue;
+ if (request_pool(qmgr_dev, len)) {
+ printk(KERN_ERR "Failed to request DMA pool of Q %d\n", qid);
+ }
+
+ conf_q_regs(queue);
+ return queue;
+}
+
+void release_queue(struct qm_queue *queue)
+{
+ struct qm_qmgr *qmgr = dev_get_drvdata(queue->dev);
+
+ BUG_ON(qmgr->queues[queue->id] != queue);
+ qmgr->queues[queue->id] = NULL;
+
+ if (free_pool(queue->dev, queue->len)) {
+ printk(KERN_ERR "Failed to release DMA pool of Q %d\n",
+ queue->id);
+ }
+ queue_disable_irq(queue);
+ queue_write_cfg_reg(queue, 0);
+
+ module_put(THIS_MODULE);
+ put_device(queue->dev);
+ kfree(queue);
+}
+
+
+
+
+static int qmgr_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ struct qm_qmgr *qmgr;
+ int size, ret=0, i;
+
+ if (!(res = platform_get_resource(pdev, IORESOURCE_MEM, 0)))
+ return -EIO;
+
+ if ((i = platform_get_irq(pdev, 0)) < 0)
+ return -EIO;
+
+ if (!(qmgr = kzalloc(sizeof(struct qm_qmgr), GFP_KERNEL)))
+ return -ENOMEM;
+
+ qmgr->irq = i;
+ size = res->end - res->start +1;
+ qmgr->res = request_mem_region(res->start, size, "ixp_qmgr");
+ if (!qmgr->res) {
+ ret = -EBUSY;
+ goto out_free;
+ }
+
+ qmgr->addr = ioremap(res->start, size);
+ if (!qmgr->addr) {
+ ret = -ENOMEM;
+ goto out_rel;
+ }
+
+ /* Reset Q registers */
+ for (i=0; i<4; i++)
+ *(qmgr->addr + QUE_LOW_STAT0 +i) = 0x33333333;
+ for (i=0; i<10; i++)
+ *(qmgr->addr + QUE_UO_STAT0 +i) = 0x0;
+ for (i=0; i<4; i++)
+ *(qmgr->addr + INT0_SRC_SELREG0 +i) = 0x0;
+ for (i=0; i<2; i++) {
+ *(qmgr->addr + QUE_IE_REG0 +i) = 0x00;
+ *(qmgr->addr + QUE_INT_REG0 +i) = 0xffffffff;
+ }
+ for (i=0; i<64; i++) {
+ *(qmgr->addr + IX_QMGR_QCFG_BASE + i) = 0x0;
+ }
+
+ if (poll_enable) {
+ pmu_timer_init();
+ qmgr->irq = IRQ_IXP4XX_XSCALE_PMU;
+ }
+ ret = request_irq(qmgr->irq, irq_qm1, SA_SHIRQ | SA_INTERRUPT,
+ "qmgr", qmgr);
+ if (ret) {
+ printk(KERN_ERR "Failed to request IRQ(%d)\n", qmgr->irq);
+ ret = -EIO;
+ goto out_rel;
+ }
+ if (poll_enable)
+ pmu_timer_restart();
+
+ rwlock_init(&qmgr->lock);
+ qmgr->dmapool = dma_pool_create("qmgr", &pdev->dev,
+ sizeof(struct npe_cont), 32, 0);
+ platform_set_drvdata(pdev, qmgr);
+
+ qmgr_dev = &pdev->dev;
+
+ printk(KERN_INFO IXQMGR_VERSION " initialized.\n");
+
+ return 0;
+
+out_rel:
+ release_resource(qmgr->res);
+out_free:
+ kfree(qmgr);
+ return ret;
+}
+
+static int qmgr_remove(struct platform_device *pdev)
+{
+ struct qm_qmgr *qmgr = platform_get_drvdata(pdev);
+ int i;
+
+ for (i=0; i<MAX_QUEUES; i++) {
+ if (qmgr->queues[i]) {
+ printk(KERN_ERR "WARNING Unreleased Q: %d\n", i);
+ release_queue(qmgr->queues[i]);
+ }
+ }
+
+ if (poll_enable)
+ pmu_timer_disable();
+
+ synchronize_irq (qmgr->irq);
+ free_irq(qmgr->irq, qmgr);
+
+ dma_pool_destroy(qmgr->dmapool);
+ iounmap(qmgr->addr);
+ release_resource(qmgr->res);
+ platform_set_drvdata(pdev, NULL);
+ qmgr_dev = NULL;
+ kfree(qmgr);
+ return 0;
+}
+
+static struct platform_driver ixp4xx_qmgr = {
+ .driver.name = "ixp4xx_qmgr",
+ .probe = qmgr_probe,
+ .remove = qmgr_remove,
+};
+
+
+static int __init init_qmgr(void)
+{
+ return platform_driver_register(&ixp4xx_qmgr);
+}
+
+static void __exit finish_qmgr(void)
+{
+ platform_driver_unregister(&ixp4xx_qmgr);
+}
+
+module_init(init_qmgr);
+module_exit(finish_qmgr);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Christian Hohnstaedt <chohnstaedt@innominate.com>");
+
+EXPORT_SYMBOL(request_queue);
+EXPORT_SYMBOL(release_queue);
+EXPORT_SYMBOL(queue_set_irq_src);
+EXPORT_SYMBOL(queue_set_watermarks);
+EXPORT_SYMBOL(queue_len);
Index: linux-2.6.21-rc1-arm/drivers/net/ixp4xx/mac.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.21-rc1-arm/drivers/net/ixp4xx/mac.h 2007-02-21 02:24:35.000000000 -0800
@@ -0,0 +1,275 @@
+/*
+ * Copyright (C) 2002-2006 Christian Hohnstaedt <chohnstaedt@innominate.com>
+ *
+ * This file is released under the GPLv2
+ */
+
+#include <linux/resource.h>
+#include <linux/netdevice.h>
+#include <linux/io.h>
+#include <linux/mii.h>
+#include <linux/workqueue.h>
+#include <asm/hardware.h>
+#include <linux/ixp_qmgr.h>
+
+/* 32 bit offsets to be added to u32 *pointers */
+#define MAC_TX_CNTRL1 0x00 // 0x000
+#define MAC_TX_CNTRL2 0x01 // 0x004
+#define MAC_RX_CNTRL1 0x04 // 0x010
+#define MAC_RX_CNTRL2 0x05 // 0x014
+#define MAC_RANDOM_SEED 0x08 // 0x020
+#define MAC_THRESH_P_EMPTY 0x0c // 0x030
+#define MAC_THRESH_P_FULL 0x0e // 0x038
+#define MAC_BUF_SIZE_TX 0x10 // 0x040
+#define MAC_TX_DEFER 0x14 // 0x050
+#define MAC_RX_DEFER 0x15 // 0x054
+#define MAC_TX_TWO_DEFER_1 0x18 // 0x060
+#define MAC_TX_TWO_DEFER_2 0x19 // 0x064
+#define MAC_SLOT_TIME 0x1c // 0x070
+#define MAC_MDIO_CMD 0x20 // 0x080 4 registers 0x20 - 0x23
+#define MAC_MDIO_STS 0x24 // 0x090 4 registers 0x24 - 0x27
+#define MAC_ADDR_MASK 0x28 // 0x0A0 6 registers 0x28 - 0x2d
+#define MAC_ADDR 0x30 // 0x0C0 6 registers 0x30 - 0x35
+#define MAC_INT_CLK_THRESH 0x38 // 0x0E0 1 register
+#define MAC_UNI_ADDR 0x3c // 0x0F0 6 registers 0x3c - 0x41
+#define MAC_CORE_CNTRL 0x7f // 0x1fC
+
+/* TX Control Register 1*/
+
+#define TX_CNTRL1_TX_EN BIT(0)
+#define TX_CNTRL1_DUPLEX BIT(1)
+#define TX_CNTRL1_RETRY BIT(2)
+#define TX_CNTRL1_PAD_EN BIT(3)
+#define TX_CNTRL1_FCS_EN BIT(4)
+#define TX_CNTRL1_2DEFER BIT(5)
+#define TX_CNTRL1_RMII BIT(6)
+
+/* TX Control Register 2 */
+#define TX_CNTRL2_RETRIES_MASK 0xf
+
+/* RX Control Register 1 */
+#define RX_CNTRL1_RX_EN BIT(0)
+#define RX_CNTRL1_PADSTRIP_EN BIT(1)
+#define RX_CNTRL1_CRC_EN BIT(2)
+#define RX_CNTRL1_PAUSE_EN BIT(3)
+#define RX_CNTRL1_LOOP_EN BIT(4)
+#define RX_CNTRL1_ADDR_FLTR_EN BIT(5)
+#define RX_CNTRL1_RX_RUNT_EN BIT(6)
+#define RX_CNTRL1_BCAST_DIS BIT(7)
+
+/* RX Control Register 2 */
+#define RX_CNTRL2_DEFER_EN BIT(0)
+
+/* Core Control Register */
+#define CORE_RESET BIT(0)
+#define CORE_RX_FIFO_FLUSH BIT(1)
+#define CORE_TX_FIFO_FLUSH BIT(2)
+#define CORE_SEND_JAM BIT(3)
+#define CORE_MDC_EN BIT(4)
+
+/* Definitions for MII access routines*/
+
+#define MII_REG_SHL 16
+#define MII_ADDR_SHL 21
+
+#define MII_GO BIT(31)
+#define MII_WRITE BIT(26)
+#define MII_READ_FAIL BIT(31)
+
+#define MII_TIMEOUT_10TH_SECS 5
+#define MII_10TH_SEC_IN_MILLIS 100
+
+/*
+ *
+ * Default values
+ *
+ */
+
+#define MAC_DEF_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
+
+#define MAC_TX_CNTRL1_DEFAULT (\
+ TX_CNTRL1_TX_EN | \
+ TX_CNTRL1_RETRY | \
+ TX_CNTRL1_FCS_EN | \
+ TX_CNTRL1_2DEFER | \
+ TX_CNTRL1_PAD_EN )
+
+#define MAC_TX_MAX_RETRIES_DEFAULT 0x0f
+
+#define MAC_RX_CNTRL1_DEFAULT ( \
+ RX_CNTRL1_PADSTRIP_EN | \
+ RX_CNTRL1_CRC_EN | \
+ RX_CNTRL1_RX_EN )
+
+#define MAC_RX_CNTRL2_DEFAULT 0x0
+#define MAC_TX_CNTRL2_DEFAULT TX_CNTRL2_RETRIES_MASK
+
+/* Thresholds determined by NPE firmware FS */
+#define MAC_THRESH_P_EMPTY_DEFAULT 0x12
+#define MAC_THRESH_P_FULL_DEFAULT 0x30
+
+/* Number of bytes that must be in the tx fifo before
+ * transmission commences */
+#define MAC_BUF_SIZE_TX_DEFAULT 0x8
+
+/* One-part deferral values */
+#define MAC_TX_DEFER_DEFAULT 0x15
+#define MAC_RX_DEFER_DEFAULT 0x16
+
+/* Two-part deferral values... */
+#define MAC_TX_TWO_DEFER_1_DEFAULT 0x08
+#define MAC_TX_TWO_DEFER_2_DEFAULT 0x07
+
+/* This value applies to MII */
+#define MAC_SLOT_TIME_DEFAULT 0x80
+
+/* This value applies to RMII */
+#define MAC_SLOT_TIME_RMII_DEFAULT 0xFF
+
+#define MAC_ADDR_MASK_DEFAULT 0xFF
+
+#define MAC_INT_CLK_THRESH_DEFAULT 0x1
+/* The following is a value chosen at random */
+#define MAC_RANDOM_SEED_DEFAULT 0x8
+
+/* By default we must configure the MAC to generate the MDC clock*/
+#define CORE_DEFAULT (CORE_MDC_EN)
+
+/* End of Intel provided register information */
+
+extern int
+mdio_read_register(struct net_device *dev, int phy_addr, int phy_reg);
+extern void
+mdio_write_register(struct net_device *dev, int phy_addr, int phy_reg, int val);
+extern void init_mdio(struct net_device *dev, int phy_id);
+
+struct mac_info {
+ u32 __iomem *addr;
+ struct resource *res;
+ struct device *npe_dev;
+ struct net_device *netdev;
+ struct qm_qmgr *qmgr;
+ struct qm_queue *rxq;
+ struct qm_queue *txq;
+ struct qm_queue *rxdoneq;
+ u32 irqflags;
+ struct net_device_stats stat;
+ struct mii_if_info mii;
+ struct delayed_work mdio_thread;
+ int rxq_pkt;
+ int txq_pkt;
+ int unloading;
+ struct mac_plat_info *plat;
+ int npe_stat_num;
+ spinlock_t rx_lock;
+ u32 msg_enable;
+};
+
+static inline void mac_write_reg(struct mac_info *mac, int offset, u32 val)
+{
+ *(mac->addr + offset) = val;
+}
+static inline u32 mac_read_reg(struct mac_info *mac, int offset)
+{
+ return *(mac->addr + offset);
+}
+static inline void mac_set_regbit(struct mac_info *mac, int offset, u32 bit)
+{
+ mac_write_reg(mac, offset, mac_read_reg(mac, offset) | bit);
+}
+static inline void mac_reset_regbit(struct mac_info *mac, int offset, u32 bit)
+{
+ mac_write_reg(mac, offset, mac_read_reg(mac, offset) & ~bit);
+}
+
+static inline void mac_mdio_cmd_write(struct mac_info *mac, u32 cmd)
+{
+ int i;
+ for(i=0; i<4; i++) {
+ mac_write_reg(mac, MAC_MDIO_CMD + i, cmd & 0xff);
+ cmd >>=8;
+ }
+}
+
+#define mac_mdio_cmd_read(mac) mac_mdio_read((mac), MAC_MDIO_CMD)
+#define mac_mdio_status_read(mac) mac_mdio_read((mac), MAC_MDIO_STS)
+static inline u32 mac_mdio_read(struct mac_info *mac, int offset)
+{
+ int i;
+ u32 data = 0;
+ for(i=0; i<4; i++) {
+ data |= (mac_read_reg(mac, offset + i) & 0xff) << (i*8);
+ }
+ return data;
+}
+
+static inline u32 mdio_cmd(int phy_addr, int phy_reg)
+{
+ return phy_addr << MII_ADDR_SHL |
+ phy_reg << MII_REG_SHL |
+ MII_GO;
+}
+
+#define MAC_REG_LIST { \
+ MAC_TX_CNTRL1, MAC_TX_CNTRL2, \
+ MAC_RX_CNTRL1, MAC_RX_CNTRL2, \
+ MAC_RANDOM_SEED, MAC_THRESH_P_EMPTY, MAC_THRESH_P_FULL, \
+ MAC_BUF_SIZE_TX, MAC_TX_DEFER, MAC_RX_DEFER, \
+ MAC_TX_TWO_DEFER_1, MAC_TX_TWO_DEFER_2, MAC_SLOT_TIME, \
+ MAC_ADDR_MASK +0, MAC_ADDR_MASK +1, MAC_ADDR_MASK +2, \
+ MAC_ADDR_MASK +3, MAC_ADDR_MASK +4, MAC_ADDR_MASK +5, \
+ MAC_ADDR +0, MAC_ADDR +1, MAC_ADDR +2, \
+ MAC_ADDR +3, MAC_ADDR +4, MAC_ADDR +5, \
+ MAC_INT_CLK_THRESH, \
+ MAC_UNI_ADDR +0, MAC_UNI_ADDR +1, MAC_UNI_ADDR +2, \
+ MAC_UNI_ADDR +3, MAC_UNI_ADDR +4, MAC_UNI_ADDR +5, \
+ MAC_CORE_CNTRL \
+}
+
+#define NPE_STAT_NUM 34
+#define NPE_STAT_NUM_BASE 22
+#define NPE_Q_STAT_NUM 4
+
+#define NPE_Q_STAT_STRINGS \
+ {"RX ready to use queue len "}, \
+ {"RX received queue len "}, \
+ {"TX to be send queue len "}, \
+ {"TX done queue len "},
+
+#define NPE_STAT_STRINGS \
+ {"StatsAlignmentErrors "}, \
+ {"StatsFCSErrors "}, \
+ {"StatsInternalMacReceiveErrors "}, \
+ {"RxOverrunDiscards "}, \
+ {"RxLearnedEntryDiscards "}, \
+ {"RxLargeFramesDiscards "}, \
+ {"RxSTPBlockedDiscards "}, \
+ {"RxVLANTypeFilterDiscards "}, \
+ {"RxVLANIdFilterDiscards "}, \
+ {"RxInvalidSourceDiscards "}, \
+ {"RxBlackListDiscards "}, \
+ {"RxWhiteListDiscards "}, \
+ {"RxUnderflowEntryDiscards "}, \
+ {"StatsSingleCollisionFrames "}, \
+ {"StatsMultipleCollisionFrames "}, \
+ {"StatsDeferredTransmissions "}, \
+ {"StatsLateCollisions "}, \
+ {"StatsExcessiveCollsions "}, \
+ {"StatsInternalMacTransmitErrors"}, \
+ {"StatsCarrierSenseErrors "}, \
+ {"TxLargeFrameDiscards "}, \
+ {"TxVLANIdFilterDiscards "}, \
+\
+ {"RxValidFramesTotalOctets "}, \
+ {"RxUcastPkts "}, \
+ {"RxBcastPkts "}, \
+ {"RxMcastPkts "}, \
+ {"RxPkts64Octets "}, \
+ {"RxPkts65to127Octets "}, \
+ {"RxPkts128to255Octets "}, \
+ {"RxPkts256to511Octets "}, \
+ {"RxPkts512to1023Octets "}, \
+ {"RxPkts1024to1518Octets "}, \
+ {"RxInternalNPEReceiveErrors "}, \
+ {"TxInternalNPETransmitErrors "}
+
Index: linux-2.6.21-rc1-arm/drivers/net/ixp4xx/mac_driver.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.21-rc1-arm/drivers/net/ixp4xx/mac_driver.c 2007-02-21 02:24:46.000000000 -0800
@@ -0,0 +1,850 @@
+/*
+ * mac_driver.c - provide a network interface for each MAC
+ *
+ * Copyright (C) 2006 Christian Hohnstaedt <chohnstaedt@innominate.com>
+ *
+ * This file is released under the GPLv2
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/dma-mapping.h>
+#include <linux/workqueue.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+
+
+#include <linux/ixp_qmgr.h>
+#include <linux/ixp_npe.h>
+#include "mac.h"
+
+#define MDIO_INTERVAL (3*HZ)
+#define RX_QUEUE_PREFILL 64
+#define TX_QUEUE_PREFILL 16
+
+#define IXMAC_NAME "ixp4xx_mac"
+#define IXMAC_VERSION "0.3.1"
+
+#define MAC_DEFAULT_REG(mac, name) \
+ mac_write_reg(mac, MAC_ ## name, MAC_ ## name ## _DEFAULT)
+
+#define TX_DONE_QID 31
+
+#define DMA_ALLOC_SIZE 2048
+#define DMA_HDR_SIZE (sizeof(struct npe_cont))
+#define DMA_BUF_SIZE (DMA_ALLOC_SIZE - DMA_HDR_SIZE)
+
+/* Since the NPEs use 1 Return Q for sent frames, we need a device
+ * independent return Q. We call it tx_doneq.
+ * It will be initialized during module load and uninitialized
+ * during module unload. Evil hack, but there is no choice :-(
+ */
+
+static struct qm_queue *tx_doneq = NULL;
+static int debug = -1;
+module_param(debug, int, 0);
+
+static int init_buffer(struct qm_queue *queue, int count)
+{
+ int i;
+ struct npe_cont *cont;
+
+ for (i=0; i<count; i++) {
+ cont = kmalloc(DMA_ALLOC_SIZE, GFP_KERNEL | GFP_DMA);
+ if (!cont)
+ goto err;
+
+ cont->phys = dma_map_single(queue->dev, cont, DMA_ALLOC_SIZE,
+ DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(cont->phys))
+ goto err;
+
+ cont->data = cont+1;
+ /* now the buffer is on a 32 bit boundary.
+ * we add 2 bytes for good alignment to SKB */
+ cont->data+=2;
+ cont->eth.next = 0;
+ cont->eth.buf_len = cpu_to_npe16(DMA_BUF_SIZE);
+ cont->eth.pkt_len = 0;
+ /* also add 2 alignment bytes from cont->data*/
+ cont->eth.phys_addr = cpu_to_npe32(cont->phys+ DMA_HDR_SIZE+ 2);
+
+ dma_sync_single(queue->dev, cont->phys, DMA_HDR_SIZE,
+ DMA_TO_DEVICE);
+
+ queue_put_entry(queue, cont->phys);
+ if (queue_stat(queue) == 2) { /* overflow */
+ dma_unmap_single(queue->dev, cont->phys, DMA_ALLOC_SIZE,
+ DMA_BIDIRECTIONAL);
+ goto err;
+ }
+ }
+ return i;
+err:
+ if (cont)
+ kfree(cont);
+ return i;
+}
+
+static int destroy_buffer(struct qm_queue *queue, int count)
+{
+ u32 phys;
+ int i;
+ struct npe_cont *cont;
+
+ for (i=0; i<count; i++) {
+ phys = queue_get_entry(queue) & ~0xf;
+ if (!phys)
+ break;
+ dma_unmap_single(queue->dev, phys, DMA_ALLOC_SIZE,
+ DMA_BIDIRECTIONAL);
+ cont = dma_to_virt(queue->dev, phys);
+ kfree(cont);
+ }
+ return i;
+}
+
+static void mac_init(struct mac_info *mac)
+{
+ MAC_DEFAULT_REG(mac, TX_CNTRL2);
+ MAC_DEFAULT_REG(mac, RANDOM_SEED);
+ MAC_DEFAULT_REG(mac, THRESH_P_EMPTY);
+ MAC_DEFAULT_REG(mac, THRESH_P_FULL);
+ MAC_DEFAULT_REG(mac, TX_DEFER);
+ MAC_DEFAULT_REG(mac, TX_TWO_DEFER_1);
+ MAC_DEFAULT_REG(mac, TX_TWO_DEFER_2);
+ MAC_DEFAULT_REG(mac, SLOT_TIME);
+ MAC_DEFAULT_REG(mac, INT_CLK_THRESH);
+ MAC_DEFAULT_REG(mac, BUF_SIZE_TX);
+ MAC_DEFAULT_REG(mac, TX_CNTRL1);
+ MAC_DEFAULT_REG(mac, RX_CNTRL1);
+}
+
+static void mac_set_uniaddr(struct net_device *dev)
+{
+ int i;
+ struct mac_info *mac = netdev_priv(dev);
+ struct npe_info *npe = dev_get_drvdata(mac->npe_dev);
+
+ /* check for multicast */
+ if (dev->dev_addr[0] & 1)
+ return;
+
+ npe_mh_setportaddr(npe, mac->plat, dev->dev_addr);
+ npe_mh_disable_firewall(npe, mac->plat);
+ for (i=0; i<dev->addr_len; i++)
+ mac_write_reg(mac, MAC_UNI_ADDR + i, dev->dev_addr[i]);
+}
+
+static void update_duplex_mode(struct net_device *dev)
+{
+ struct mac_info *mac = netdev_priv(dev);
+ if (netif_msg_link(mac)) {
+ printk(KERN_DEBUG "Link of %s is %s-duplex\n", dev->name,
+ mac->mii.full_duplex ? "full" : "half");
+ }
+ if (mac->mii.full_duplex) {
+ mac_reset_regbit(mac, MAC_TX_CNTRL1, TX_CNTRL1_DUPLEX);
+ } else {
+ mac_set_regbit(mac, MAC_TX_CNTRL1, TX_CNTRL1_DUPLEX);
+ }
+}
+
+static int media_check(struct net_device *dev, int init)
+{
+ struct mac_info *mac = netdev_priv(dev);
+
+ if (mii_check_media(&mac->mii, netif_msg_link(mac), init)) {
+ update_duplex_mode(dev);
+ return 1;
+ }
+ return 0;
+}
+
+static void get_npe_stats(struct mac_info *mac, u32 *buf, int len, int reset)
+{
+ struct npe_info *npe = dev_get_drvdata(mac->npe_dev);
+ u32 phys;
+
+ memset(buf, len, 0);
+ phys = dma_map_single(mac->npe_dev, buf, len, DMA_BIDIRECTIONAL);
+ npe_mh_get_stats(npe, mac->plat, phys, reset);
+ dma_unmap_single(mac->npe_dev, phys, len, DMA_BIDIRECTIONAL);
+}
+
+static void irqcb_recv(struct qm_queue *queue)
+{
+ struct net_device *dev = queue->cb_data;
+
+ queue_ack_irq(queue);
+ queue_disable_irq(queue);
+ if (netif_running(dev))
+ netif_rx_schedule(dev);
+}
+
+int ix_recv(struct net_device *dev, int *budget, struct qm_queue *queue)
+{
+ struct mac_info *mac = netdev_priv(dev);
+ struct sk_buff *skb;
+ u32 phys;
+ struct npe_cont *cont;
+
+ while (*budget > 0 && netif_running(dev) ) {
+ int len;
+ phys = queue_get_entry(queue) & ~0xf;
+ if (!phys)
+ break;
+ dma_sync_single(queue->dev, phys, DMA_HDR_SIZE,
+ DMA_FROM_DEVICE);
+ cont = dma_to_virt(queue->dev, phys);
+ len = npe_to_cpu16(cont->eth.pkt_len) -4; /* strip FCS */
+
+ if (unlikely(netif_msg_rx_status(mac))) {
+ printk(KERN_DEBUG "%s: RX packet size: %u\n",
+ dev->name, len);
+ queue_state(mac->rxq);
+ queue_state(mac->rxdoneq);
+ }
+ skb = dev_alloc_skb(len + 2);
+ if (likely(skb)) {
+ skb->dev = dev;
+ skb_reserve(skb, 2);
+ dma_sync_single(queue->dev, cont->eth.phys_addr, len,
+ DMA_FROM_DEVICE);
+#ifdef CONFIG_NPE_ADDRESS_COHERENT
+ /* swap the payload of the SKB */
+ {
+ u32 *t = (u32*)(skb->data-2);
+ u32 *s = (u32*)(cont->data-2);
+ int i, j = (len+5)/4;
+ for (i=0; i<j; i++)
+ t[i] = cpu_to_be32(s[i]);
+ }
+#else
+ eth_copy_and_sum(skb, cont->data, len, 0);
+#endif
+ skb_put(skb, len);
+ skb->protocol = eth_type_trans(skb, dev);
+ dev->last_rx = jiffies;
+ netif_receive_skb(skb);
+ mac->stat.rx_packets++;
+ mac->stat.rx_bytes += skb->len;
+ } else {
+ mac->stat.rx_dropped++;
+ }
+ cont->eth.buf_len = cpu_to_npe16(DMA_BUF_SIZE);
+ cont->eth.pkt_len = 0;
+ dma_sync_single(queue->dev, phys, DMA_HDR_SIZE, DMA_TO_DEVICE);
+ queue_put_entry(mac->rxq, phys);
+ dev->quota--;
+ (*budget)--;
+ }
+
+ return !budget;
+}
+
+static int ix_poll(struct net_device *dev, int *budget)
+{
+ struct mac_info *mac = netdev_priv(dev);
+ struct qm_queue *queue = mac->rxdoneq;
+
+ for (;;) {
+ if (ix_recv(dev, budget, queue))
+ return 1;
+ netif_rx_complete(dev);
+ queue_enable_irq(queue);
+ if (!queue_len(queue))
+ break;
+ queue_disable_irq(queue);
+ if (netif_rx_reschedule(dev, 0))
+ break;
+ }
+ return 0;
+}
+
+static void ixmac_set_rx_mode (struct net_device *dev)
+{
+ struct mac_info *mac = netdev_priv(dev);
+ struct dev_mc_list *mclist;
+ u8 aset[dev->addr_len], aclear[dev->addr_len];
+ int i,j;
+
+ if (dev->flags & IFF_PROMISC) {
+ mac_reset_regbit(mac, MAC_RX_CNTRL1, RX_CNTRL1_ADDR_FLTR_EN);
+ } else {
+ mac_set_regbit(mac, MAC_RX_CNTRL1, RX_CNTRL1_ADDR_FLTR_EN);
+
+ mclist = dev->mc_list;
+ memset(aset, 0xff, dev->addr_len);
+ memset(aclear, 0x00, dev->addr_len);
+ for (i = 0; mclist && i < dev->mc_count; i++) {
+ for (j=0; j< dev->addr_len; j++) {
+ aset[j] &= mclist->dmi_addr[j];
+ aclear[j] |= mclist->dmi_addr[j];
+ }
+ mclist = mclist->next;
+ }
+ for (j=0; j< dev->addr_len; j++) {
+ aclear[j] = aset[j] | ~aclear[j];
+ }
+ for (i=0; i<dev->addr_len; i++) {
+ mac_write_reg(mac, MAC_ADDR + i, aset[i]);
+ mac_write_reg(mac, MAC_ADDR_MASK + i, aclear[i]);
+ }
+ }
+}
+
+static int ixmac_open (struct net_device *dev)
+{
+ struct mac_info *mac = netdev_priv(dev);
+ struct npe_info *npe = dev_get_drvdata(mac->npe_dev);
+ u32 buf[NPE_STAT_NUM];
+ int i;
+ u32 phys;
+
+ /* first check if the NPE is up and running */
+ if (!( npe_status(npe) & IX_NPEDL_EXCTL_STATUS_RUN)) {
+ printk(KERN_ERR "%s: %s not running\n", dev->name,
+ npe->plat->name);
+ return -EIO;
+ }
+ if (npe_mh_status(npe)) {
+ printk(KERN_ERR "%s: %s not responding\n", dev->name,
+ npe->plat->name);
+ return -EIO;
+ }
+ mac->txq_pkt += init_buffer(mac->txq, TX_QUEUE_PREFILL - mac->txq_pkt);
+ mac->rxq_pkt += init_buffer(mac->rxq, RX_QUEUE_PREFILL - mac->rxq_pkt);
+
+ queue_enable_irq(mac->rxdoneq);
+
+ /* drain all buffers from then RX-done-q to make the IRQ happen */
+ while ((phys = queue_get_entry(mac->rxdoneq) & ~0xf)) {
+ struct npe_cont *cont;
+ cont = dma_to_virt(mac->rxdoneq->dev, phys);
+ cont->eth.buf_len = cpu_to_npe16(DMA_BUF_SIZE);
+ cont->eth.pkt_len = 0;
+ dma_sync_single(mac->rxdoneq->dev, phys, DMA_HDR_SIZE,
+ DMA_TO_DEVICE);
+ queue_put_entry(mac->rxq, phys);
+ }
+ mac_init(mac);
+ npe_mh_set_rxqid(npe, mac->plat, mac->plat->rxdoneq_id);
+ get_npe_stats(mac, buf, sizeof(buf), 1); /* reset stats */
+ get_npe_stats(mac, buf, sizeof(buf), 0);
+ /*
+ * if the extended stats contain random values
+ * the NPE image lacks extendet statistic counters
+ */
+ for (i=NPE_STAT_NUM_BASE; i<NPE_STAT_NUM; i++) {
+ if (buf[i] >10000)
+ break;
+ }
+ mac->npe_stat_num = i<NPE_STAT_NUM ? NPE_STAT_NUM_BASE : NPE_STAT_NUM;
+ mac->npe_stat_num += NPE_Q_STAT_NUM;
+
+ mac_set_uniaddr(dev);
+ media_check(dev, 1);
+ ixmac_set_rx_mode(dev);
+ netif_start_queue(dev);
+ schedule_delayed_work(&mac->mdio_thread, MDIO_INTERVAL);
+ if (netif_msg_ifup(mac)) {
+ printk(KERN_DEBUG "%s: open " IXMAC_NAME
+ " RX queue %d bufs, TX queue %d bufs\n",
+ dev->name, mac->rxq_pkt, mac->txq_pkt);
+ }
+ return 0;
+}
+
+static int ixmac_start_xmit (struct sk_buff *skb, struct net_device *dev)
+{
+ struct mac_info *mac = netdev_priv(dev);
+ struct npe_cont *cont;
+ u32 phys;
+ struct qm_queue *queue = mac->txq;
+
+ if (unlikely(skb->len > DMA_BUF_SIZE)) {
+ dev_kfree_skb(skb);
+ mac->stat.tx_errors++;
+ return NETDEV_TX_OK;
+ }
+ phys = queue_get_entry(tx_doneq) & ~0xf;
+ if (!phys)
+ goto busy;
+ cont = dma_to_virt(queue->dev, phys);
+#ifdef CONFIG_NPE_ADDRESS_COHERENT
+ /* swap the payload of the SKB */
+ {
+ u32 *s = (u32*)(skb->data-2);
+ u32 *t = (u32*)(cont->data-2);
+ int i,j = (skb->len+5) / 4;
+ for (i=0; i<j; i++)
+ t[i] = cpu_to_be32(s[i]);
+ }
+#else
+ //skb_copy_and_csum_dev(skb, cont->data);
+ memcpy(cont->data, skb->data, skb->len);
+#endif
+ cont->eth.buf_len = cpu_to_npe16(DMA_BUF_SIZE);
+ cont->eth.pkt_len = cpu_to_npe16(skb->len);
+ /* disable VLAN functions in NPE image for now */
+ cont->eth.flags = 0;
+ dma_sync_single(queue->dev, phys, skb->len + DMA_HDR_SIZE,
+ DMA_TO_DEVICE);
+ queue_put_entry(queue, phys);
+ if (queue_stat(queue) == 2) { /* overflow */
+ queue_put_entry(tx_doneq, phys);
+ goto busy;
+ }
+ dev_kfree_skb(skb);
+
+ mac->stat.tx_packets++;
+ mac->stat.tx_bytes += skb->len;
+ dev->trans_start = jiffies;
+ if (netif_msg_tx_queued(mac)) {
+ printk(KERN_DEBUG "%s: TX packet size %u\n",
+ dev->name, skb->len);
+ queue_state(mac->txq);
+ queue_state(tx_doneq);
+ }
+ return NETDEV_TX_OK;
+busy:
+ return NETDEV_TX_BUSY;
+}
+
+static int ixmac_close (struct net_device *dev)
+{
+ struct mac_info *mac = netdev_priv(dev);
+
+ netif_stop_queue (dev);
+ queue_disable_irq(mac->rxdoneq);
+
+ mac->txq_pkt -= destroy_buffer(tx_doneq, mac->txq_pkt);
+ mac->rxq_pkt -= destroy_buffer(mac->rxq, mac->rxq_pkt);
+
+ cancel_rearming_delayed_work(&(mac->mdio_thread));
+
+ if (netif_msg_ifdown(mac)) {
+ printk(KERN_DEBUG "%s: close " IXMAC_NAME
+ " RX queue %d bufs, TX queue %d bufs\n",
+ dev->name, mac->rxq_pkt, mac->txq_pkt);
+ }
+ return 0;
+}
+
+static int ixmac_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct mac_info *mac = netdev_priv(dev);
+ int rc, duplex_changed;
+
+ if (!netif_running(dev))
+ return -EINVAL;
+ if (!try_module_get(THIS_MODULE))
+ return -ENODEV;
+ rc = generic_mii_ioctl(&mac->mii, if_mii(rq), cmd, &duplex_changed);
+ module_put(THIS_MODULE);
+ if (duplex_changed)
+ update_duplex_mode(dev);
+ return rc;
+}
+
+static struct net_device_stats *ixmac_stats (struct net_device *dev)
+{
+ struct mac_info *mac = netdev_priv(dev);
+ return &mac->stat;
+}
+
+static void ixmac_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+ struct mac_info *mac = netdev_priv(dev);
+ struct npe_info *npe = dev_get_drvdata(mac->npe_dev);
+
+ strcpy(info->driver, IXMAC_NAME);
+ strcpy(info->version, IXMAC_VERSION);
+ if (npe_status(npe) & IX_NPEDL_EXCTL_STATUS_RUN) {
+ snprintf(info->fw_version, 32, "%d.%d func [%d]",
+ npe->img_info[2], npe->img_info[3], npe->img_info[1]);
+ }
+ strncpy(info->bus_info, npe->plat->name, ETHTOOL_BUSINFO_LEN);
+}
+
+static int ixmac_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct mac_info *mac = netdev_priv(dev);
+ mii_ethtool_gset(&mac->mii, cmd);
+ return 0;
+}
+
+static int ixmac_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct mac_info *mac = netdev_priv(dev);
+ int rc;
+ rc = mii_ethtool_sset(&mac->mii, cmd);
+ return rc;
+}
+
+static int ixmac_nway_reset(struct net_device *dev)
+{
+ struct mac_info *mac = netdev_priv(dev);
+ return mii_nway_restart(&mac->mii);
+}
+
+static u32 ixmac_get_link(struct net_device *dev)
+{
+ struct mac_info *mac = netdev_priv(dev);
+ return mii_link_ok(&mac->mii);
+}
+
+static const int mac_reg_list[] = MAC_REG_LIST;
+
+static int ixmac_get_regs_len(struct net_device *dev)
+{
+ return ARRAY_SIZE(mac_reg_list);
+}
+
+static void
+ixmac_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf)
+{
+ int i;
+ struct mac_info *mac = netdev_priv(dev);
+ u8 *buf = regbuf;
+
+ for (i=0; i<regs->len; i++) {
+ buf[i] = mac_read_reg(mac, mac_reg_list[i]);
+ }
+}
+
+static struct {
+ const char str[ETH_GSTRING_LEN];
+} ethtool_stats_keys[NPE_STAT_NUM + NPE_Q_STAT_NUM] = {
+ NPE_Q_STAT_STRINGS
+ NPE_STAT_STRINGS
+};
+
+static void ixmac_get_strings(struct net_device *dev, u32 stringset, u8 *data)
+{
+ struct mac_info *mac = netdev_priv(dev);
+ memcpy(data, ethtool_stats_keys, mac->npe_stat_num * ETH_GSTRING_LEN);
+}
+
+static int ixmac_get_stats_count(struct net_device *dev)
+{
+ struct mac_info *mac = netdev_priv(dev);
+ return mac->npe_stat_num;
+}
+
+static u32 ixmac_get_msglevel(struct net_device *dev)
+{
+ struct mac_info *mac = netdev_priv(dev);
+ return mac->msg_enable;
+}
+
+static void ixmac_set_msglevel(struct net_device *dev, u32 datum)
+{
+ struct mac_info *mac = netdev_priv(dev);
+ mac->msg_enable = datum;
+}
+
+static void ixmac_get_ethtool_stats(struct net_device *dev,
+ struct ethtool_stats *stats, u64 *data)
+{
+ int i;
+ struct mac_info *mac = netdev_priv(dev);
+ u32 buf[NPE_STAT_NUM];
+
+ data[0] = queue_len(mac->rxq);
+ data[1] = queue_len(mac->rxdoneq);
+ data[2] = queue_len(mac->txq);
+ data[3] = queue_len(tx_doneq);
+
+ get_npe_stats(mac, buf, sizeof(buf), 0);
+
+ for (i=0; i<stats->n_stats-4; i++) {
+ data[i+4] = npe_to_cpu32(buf[i]);
+ }
+}
+
+static struct ethtool_ops ixmac_ethtool_ops = {
+ .get_drvinfo = ixmac_get_drvinfo,
+ .get_settings = ixmac_get_settings,
+ .set_settings = ixmac_set_settings,
+ .nway_reset = ixmac_nway_reset,
+ .get_link = ixmac_get_link,
+ .get_msglevel = ixmac_get_msglevel,
+ .set_msglevel = ixmac_set_msglevel,
+ .get_regs_len = ixmac_get_regs_len,
+ .get_regs = ixmac_get_regs,
+ .get_perm_addr = ethtool_op_get_perm_addr,
+ .get_strings = ixmac_get_strings,
+ .get_stats_count = ixmac_get_stats_count,
+ .get_ethtool_stats = ixmac_get_ethtool_stats,
+};
+
+static void mac_mdio_thread(struct work_struct *work)
+{
+ struct mac_info *mac = container_of(work, struct mac_info,
+ mdio_thread.work);
+ struct net_device *dev = mac->netdev;
+
+ media_check(dev, 0);
+ schedule_delayed_work(&mac->mdio_thread, MDIO_INTERVAL);
+}
+
+static int mac_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ struct mac_info *mac;
+ struct net_device *dev;
+ struct npe_info *npe;
+ struct mac_plat_info *plat = pdev->dev.platform_data;
+ int size, ret;
+
+ if (!(res = platform_get_resource(pdev, IORESOURCE_MEM, 0))) {
+ return -EIO;
+ }
+ if (!(dev = alloc_etherdev (sizeof(struct mac_info)))) {
+ return -ENOMEM;
+ }
+ SET_MODULE_OWNER(dev);
+ SET_NETDEV_DEV(dev, &pdev->dev);
+ mac = netdev_priv(dev);
+ mac->netdev = dev;
+
+ size = res->end - res->start +1;
+ mac->res = request_mem_region(res->start, size, IXMAC_NAME);
+ if (!mac->res) {
+ ret = -EBUSY;
+ goto out_free;
+ }
+
+ mac->addr = ioremap(res->start, size);
+ if (!mac->addr) {
+ ret = -ENOMEM;
+ goto out_rel;
+ }
+
+ dev->open = ixmac_open;
+ dev->hard_start_xmit = ixmac_start_xmit;
+ dev->poll = ix_poll;
+ dev->stop = ixmac_close;
+ dev->get_stats = ixmac_stats;
+ dev->do_ioctl = ixmac_ioctl;
+ dev->set_multicast_list = ixmac_set_rx_mode;
+ dev->ethtool_ops = &ixmac_ethtool_ops;
+
+ dev->weight = 16;
+ dev->tx_queue_len = 100;
+
+ mac->npe_dev = get_npe_by_id(plat->npe_id);
+ if (!mac->npe_dev) {
+ ret = -EIO;
+ goto out_unmap;
+ }
+ npe = dev_get_drvdata(mac->npe_dev);
+
+ mac->rxq = request_queue(plat->rxq_id, 128);
+ if (IS_ERR(mac->rxq)) {
+ printk(KERN_ERR "Error requesting Q: %d\n", plat->rxq_id);
+ ret = -EBUSY;
+ goto out_putmod;
+ }
+ mac->txq = request_queue(plat->txq_id, 128);
+ if (IS_ERR(mac->txq)) {
+ printk(KERN_ERR "Error requesting Q: %d\n", plat->txq_id);
+ ret = -EBUSY;
+ goto out_putmod;
+ }
+ mac->rxdoneq = request_queue(plat->rxdoneq_id, 128);
+ if (IS_ERR(mac->rxdoneq)) {
+ printk(KERN_ERR "Error requesting Q: %d\n", plat->rxdoneq_id);
+ ret = -EBUSY;
+ goto out_putmod;
+ }
+ mac->rxdoneq->irq_cb = irqcb_recv;
+ mac->rxdoneq->cb_data = dev;
+ queue_set_watermarks(mac->rxdoneq, 0, 0);
+ queue_set_irq_src(mac->rxdoneq, Q_IRQ_ID_NOT_E);
+
+ mac->qmgr = dev_get_drvdata(mac->rxq->dev);
+ if (register_netdev (dev)) {
+ ret = -EIO;
+ goto out_putmod;
+ }
+
+ mac->plat = plat;
+ mac->npe_stat_num = NPE_STAT_NUM_BASE;
+ mac->msg_enable = netif_msg_init(debug, MAC_DEF_MSG_ENABLE);
+
+ platform_set_drvdata(pdev, dev);
+
+ mac_write_reg(mac, MAC_CORE_CNTRL, CORE_RESET);
+ udelay(500);
+ mac_write_reg(mac, MAC_CORE_CNTRL, CORE_MDC_EN);
+
+ init_mdio(dev, plat->phy_id);
+
+ INIT_DELAYED_WORK(&mac->mdio_thread, mac_mdio_thread);
+
+ /* The place of the MAC address is very system dependent.
+ * Here we use a random one to be replaced by one of the
+ * following commands:
+ * "ip link set address 02:03:04:04:04:01 dev eth0"
+ * "ifconfig eth0 hw ether 02:03:04:04:04:07"
+ */
+
+ if (is_zero_ether_addr(plat->hwaddr)) {
+ random_ether_addr(dev->dev_addr);
+ dev->dev_addr[5] = plat->phy_id;
+ }
+ else
+ memcpy(dev->dev_addr, plat->hwaddr, 6);
+
+ printk(KERN_INFO IXMAC_NAME " driver " IXMAC_VERSION
+ ": %s on %s with PHY[%d] initialized\n",
+ dev->name, npe->plat->name, plat->phy_id);
+
+ return 0;
+
+out_putmod:
+ if (mac->rxq)
+ release_queue(mac->rxq);
+ if (mac->txq)
+ release_queue(mac->txq);
+ if (mac->rxdoneq)
+ release_queue(mac->rxdoneq);
+ module_put(mac->npe_dev->driver->owner);
+out_unmap:
+ iounmap(mac->addr);
+out_rel:
+ release_resource(mac->res);
+out_free:
+ kfree(mac);
+ return ret;
+}
+
+static void drain_npe(struct mac_info *mac)
+{
+ struct npe_info *npe = dev_get_drvdata(mac->npe_dev);
+ struct npe_cont *cont;
+ u32 phys;
+ int loop = 0;
+
+ /* Now there are some skb hold by the NPE.
+ * We switch the MAC in loopback mode and send a pseudo packet
+ * that will be returned by the NPE in its last SKB.
+ * We will also try to isolate the PHY to keep the packets internal.
+ */
+
+ if (mac->txq_pkt <2)
+ mac->txq_pkt += init_buffer(tx_doneq, 5);
+
+ if (npe_status(npe) & IX_NPEDL_EXCTL_STATUS_RUN) {
+ mac_reset_regbit(mac, MAC_CORE_CNTRL, CORE_MDC_EN);
+ mac_set_regbit(mac, MAC_RX_CNTRL1, RX_CNTRL1_LOOP_EN);
+
+ npe_mh_npe_loopback_mode(npe, mac->plat, 1);
+ mdelay(200);
+
+ while (mac->rxq_pkt && loop++ < 2000 ) {
+ phys = queue_get_entry(tx_doneq) & ~0xf;
+ if (!phys)
+ break;
+ cont = dma_to_virt(queue->dev, phys);
+ /* actually the packets should never leave the system,
+ * but if they do, they shall contain 0s instead of
+ * intresting random data....
+ */
+ memset(cont->data, 0, 64);
+ cont->eth.pkt_len = 64;
+ dma_sync_single(mac->txq->dev, phys, 64 + DMA_HDR_SIZE,
+ DMA_TO_DEVICE);
+ queue_put_entry(mac->txq, phys);
+ if (queue_stat(mac->txq) == 2) { /* overflow */
+ queue_put_entry(tx_doneq, phys);
+ break;
+ }
+ mdelay(1);
+ mac->rxq_pkt -= destroy_buffer(mac->rxdoneq,
+ mac->rxq_pkt);
+ }
+ npe_mh_npe_loopback_mode(npe, mac->plat, 0);
+ }
+ /* Flush MAC TX fifo to drain the bogus packages */
+ mac_set_regbit(mac, MAC_CORE_CNTRL, CORE_TX_FIFO_FLUSH);
+ mac_reset_regbit(mac, MAC_RX_CNTRL1, RX_CNTRL1_RX_EN);
+ mac_reset_regbit(mac, MAC_TX_CNTRL1, TX_CNTRL1_TX_EN);
+ mac_reset_regbit(mac, MAC_RX_CNTRL1, RX_CNTRL1_LOOP_EN);
+ mac_reset_regbit(mac, MAC_CORE_CNTRL, CORE_TX_FIFO_FLUSH);
+ mac_reset_regbit(mac, MAC_CORE_CNTRL, CORE_TX_FIFO_FLUSH);
+}
+
+static int mac_remove(struct platform_device *pdev)
+{
+ struct net_device* dev = platform_get_drvdata(pdev);
+ struct mac_info *mac = netdev_priv(dev);
+
+ unregister_netdev(dev);
+
+ mac->rxq_pkt -= destroy_buffer(mac->rxq, mac->rxq_pkt);
+ if (mac->rxq_pkt)
+ drain_npe(mac);
+
+ mac->txq_pkt -= destroy_buffer(mac->txq, mac->txq_pkt);
+ mac->txq_pkt -= destroy_buffer(tx_doneq, mac->txq_pkt);
+
+ if (mac->rxq_pkt || mac->txq_pkt)
+ printk("Buffers lost in NPE: RX:%d, TX:%d\n",
+ mac->rxq_pkt, mac->txq_pkt);
+
+ release_queue(mac->txq);
+ release_queue(mac->rxq);
+ release_queue(mac->rxdoneq);
+
+ flush_scheduled_work();
+ return_npe_dev(mac->npe_dev);
+
+ iounmap(mac->addr);
+ release_resource(mac->res);
+ platform_set_drvdata(pdev, NULL);
+ free_netdev(dev);
+ return 0;
+}
+
+static struct platform_driver ixp4xx_mac = {
+ .driver.name = IXMAC_NAME,
+ .probe = mac_probe,
+ .remove = mac_remove,
+};
+
+static int __init init_mac(void)
+{
+ /* The TX done Queue handles skbs sent out by the NPE */
+ tx_doneq = request_queue(TX_DONE_QID, 128);
+ if (IS_ERR(tx_doneq)) {
+ printk(KERN_ERR "Error requesting Q: %d\n", TX_DONE_QID);
+ return -EBUSY;
+ }
+ return platform_driver_register(&ixp4xx_mac);
+}
+
+static void __exit finish_mac(void)
+{
+ platform_driver_unregister(&ixp4xx_mac);
+ if (tx_doneq) {
+ release_queue(tx_doneq);
+ }
+}
+
+module_init(init_mac);
+module_exit(finish_mac);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Christian Hohnstaedt <chohnstaedt@innominate.com>");
+
Index: linux-2.6.21-rc1-arm/drivers/net/ixp4xx/npe.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.21-rc1-arm/drivers/net/ixp4xx/npe.c 2007-02-21 02:24:35.000000000 -0800
@@ -0,0 +1,291 @@
+
+#include <linux/ixp_npe.h>
+#include <asm/hardware.h>
+
+#define RESET_NPE_PARITY 0x0800
+#define PARITY_BIT_MASK 0x3F00FFFF
+#define CONFIG_CTRL_REG_MASK 0x3F3FFFFF
+#define MAX_RETRIES 1000000
+#define NPE_PHYS_REG 32
+#define RESET_MBST_VAL 0x0000F0F0
+#define NPE_REGMAP 0x0000001E
+#define INSTR_WR_REG_SHORT 0x0000C000
+#define INSTR_WR_REG_BYTE 0x00004000
+#define MASK_ECS_REG_0_NEXTPC 0x1FFF0000
+
+#define INSTR_RD_FIFO 0x0F888220
+#define INSTR_RESET_MBOX 0x0FAC8210
+
+#define ECS_REG_0_LDUR 8
+#define ECS_REG_1_CCTXT 16
+#define ECS_REG_1_SELCTXT 0
+
+#define ECS_BG_CTXT_REG_0 0x00
+#define ECS_BG_CTXT_REG_1 0x01
+#define ECS_BG_CTXT_REG_2 0x02
+#define ECS_PRI_1_CTXT_REG_0 0x04
+#define ECS_PRI_1_CTXT_REG_1 0x05
+#define ECS_PRI_1_CTXT_REG_2 0x06
+#define ECS_PRI_2_CTXT_REG_0 0x08
+#define ECS_PRI_2_CTXT_REG_1 0x09
+#define ECS_PRI_2_CTXT_REG_2 0x0A
+#define ECS_DBG_CTXT_REG_0 0x0C
+#define ECS_DBG_CTXT_REG_1 0x0D
+#define ECS_DBG_CTXT_REG_2 0x0E
+#define ECS_INSTRUCT_REG 0x11
+
+#define ECS_BG_CTXT_REG_0_RESET 0xA0000000
+#define ECS_BG_CTXT_REG_1_RESET 0x01000000
+#define ECS_BG_CTXT_REG_2_RESET 0x00008000
+#define ECS_PRI_1_CTXT_REG_0_RESET 0x20000080
+#define ECS_PRI_1_CTXT_REG_1_RESET 0x01000000
+#define ECS_PRI_1_CTXT_REG_2_RESET 0x00008000
+#define ECS_PRI_2_CTXT_REG_0_RESET 0x20000080
+#define ECS_PRI_2_CTXT_REG_1_RESET 0x01000000
+#define ECS_PRI_2_CTXT_REG_2_RESET 0x00008000
+#define ECS_DBG_CTXT_REG_0_RESET 0x20000000
+#define ECS_DBG_CTXT_REG_1_RESET 0x00000000
+#define ECS_DBG_CTXT_REG_2_RESET 0x001E0000
+#define ECS_INSTRUCT_REG_RESET 0x1003C00F
+
+static struct { u32 reg; u32 val; } ecs_reset[] =
+{
+ { ECS_BG_CTXT_REG_0, ECS_BG_CTXT_REG_0_RESET },
+ { ECS_BG_CTXT_REG_1, ECS_BG_CTXT_REG_1_RESET },
+ { ECS_BG_CTXT_REG_2, ECS_BG_CTXT_REG_2_RESET },
+ { ECS_PRI_1_CTXT_REG_0, ECS_PRI_1_CTXT_REG_0_RESET },
+ { ECS_PRI_1_CTXT_REG_1, ECS_PRI_1_CTXT_REG_1_RESET },
+ { ECS_PRI_1_CTXT_REG_2, ECS_PRI_1_CTXT_REG_2_RESET },
+ { ECS_PRI_2_CTXT_REG_0, ECS_PRI_2_CTXT_REG_0_RESET },
+ { ECS_PRI_2_CTXT_REG_1, ECS_PRI_2_CTXT_REG_1_RESET },
+ { ECS_PRI_2_CTXT_REG_2, ECS_PRI_2_CTXT_REG_2_RESET },
+ { ECS_DBG_CTXT_REG_0, ECS_DBG_CTXT_REG_0_RESET },
+ { ECS_DBG_CTXT_REG_1, ECS_DBG_CTXT_REG_1_RESET },
+ { ECS_DBG_CTXT_REG_2, ECS_DBG_CTXT_REG_2_RESET },
+ { ECS_INSTRUCT_REG, ECS_INSTRUCT_REG_RESET }
+};
+
+/* actually I have no idea what I'm doing here !!
+ * I only rewrite the "reset" sequence the way Intel does it.
+ */
+
+static void npe_debg_preexec(struct npe_info *npe)
+{
+ u32 r = IX_NPEDL_MASK_ECS_DBG_REG_2_IF | IX_NPEDL_MASK_ECS_DBG_REG_2_IE;
+
+ npe->exec_count = npe_reg_read(npe, IX_NPEDL_REG_OFFSET_EXCT);
+ npe_reg_write(npe, IX_NPEDL_REG_OFFSET_EXCT, 0);
+ npe->ctx_reg2 = npe_read_ecs_reg(npe, ECS_DBG_CTXT_REG_2);
+ npe_write_ecs_reg(npe, ECS_DBG_CTXT_REG_2, npe->ctx_reg2 | r);
+}
+
+static void npe_debg_postexec(struct npe_info *npe)
+{
+ npe_write_ecs_reg(npe, ECS_DBG_CTXT_REG_0, 0);
+ npe_write_exctl(npe, IX_NPEDL_EXCTL_CMD_NPE_CLR_PIPE);
+ npe_reg_write(npe, IX_NPEDL_REG_OFFSET_EXCT, npe->exec_count);
+ npe_write_ecs_reg(npe, ECS_DBG_CTXT_REG_2, npe->ctx_reg2);
+}
+
+static int
+npe_debg_inst_exec(struct npe_info *npe, u32 instr, u32 ctx, u32 ldur)
+{
+ u32 regval, wc;
+ int c = 0;
+
+ regval = IX_NPEDL_MASK_ECS_REG_0_ACTIVE |
+ (ldur << ECS_REG_0_LDUR);
+ npe_write_ecs_reg(npe, ECS_DBG_CTXT_REG_0 , regval);
+ /* set CCTXT at ECS DEBUG L3 to specify in which context
+ * to execute the instruction
+ */
+ regval = (ctx << ECS_REG_1_CCTXT) |
+ (ctx << ECS_REG_1_SELCTXT);
+ npe_write_ecs_reg(npe, ECS_DBG_CTXT_REG_1, regval);
+
+ /* clear the pipeline */
+ npe_write_exctl(npe, IX_NPEDL_EXCTL_CMD_NPE_CLR_PIPE);
+
+ /* load NPE instruction into the instruction register */
+ npe_write_ecs_reg(npe, ECS_INSTRUCT_REG, instr);
+ /* we need this value later to wait for
+ * completion of NPE execution step
+ */
+ wc = npe_reg_read(npe, IX_NPEDL_REG_OFFSET_WC);
+ npe_write_exctl(npe, IX_NPEDL_EXCTL_CMD_NPE_STEP);
+
+ /* Watch Count register increments when NPE completes an instruction */
+ while (wc == npe_reg_read(npe, IX_NPEDL_REG_OFFSET_WC) &&
+ ++c < MAX_RETRIES);
+
+ if (c >= MAX_RETRIES) {
+ printk(KERN_ERR "%s reset:npe_debg_inst_exec(): Timeout\n",
+ npe->plat->name);
+ return 1;
+ }
+ return 0;
+}
+
+static int npe_logical_reg_write8(struct npe_info *npe, u32 addr, u32 val)
+{
+ u32 instr;
+ val &= 0xff;
+ /* here we build the NPE assembler instruction:
+ * mov8 d0, #0 */
+ instr = INSTR_WR_REG_BYTE | /* OpCode */
+ addr << 9 | /* base Operand */
+ (val & 0x1f) << 4 | /* lower 5 bits to immediate data */
+ (val & ~0x1f) << (18-5);/* higher 3 bits to CoProc instr. */
+ /* and execute it */
+ return npe_debg_inst_exec(npe, instr, 0, 1);
+}
+
+static int npe_logical_reg_write16(struct npe_info *npe, u32 addr, u32 val)
+{
+ u32 instr;
+ /* here we build the NPE assembler instruction:
+ * mov16 d0, #0 */
+ val &= 0xffff;
+ instr = INSTR_WR_REG_SHORT | /* OpCode */
+ addr << 9 | /* base Operand */
+ (val & 0x1f) << 4 | /* lower 5 bits to immediate data */
+ (val & ~0x1f) << (18-5);/* higher 11 bits to CoProc instr. */
+ /* and execute it */
+ return npe_debg_inst_exec(npe, instr, 0, 1);
+}
+
+static int npe_logical_reg_write32(struct npe_info *npe, u32 addr, u32 val)
+{
+ /* write in 16 bit steps first the high and then the low value */
+ npe_logical_reg_write16(npe, addr, val >> 16);
+ return npe_logical_reg_write16(npe, addr+2, val & 0xffff);
+}
+
+void npe_reset(struct npe_info *npe)
+{
+ u32 reg, cfg_ctrl;
+ int i;
+ struct { u32 reset; int addr; int size; } ctx_reg[] = {
+ { 0x80, 0x1b, 8 },
+ { 0, 0x1c, 16 },
+ { 0x820, 0x1e, 16 },
+ { 0, 0x1f, 8 }
+ }, *cr;
+
+ cfg_ctrl = npe_reg_read(npe, IX_NPEDL_REG_OFFSET_CTL);
+ cfg_ctrl |= 0x3F000000;
+ /* disable the parity interrupt */
+ npe_reg_write(npe, IX_NPEDL_REG_OFFSET_CTL, cfg_ctrl & PARITY_BIT_MASK);
+
+ npe_debg_preexec(npe);
+
+ /* clear the FIFOs */
+ while (npe_reg_read(npe, IX_NPEDL_REG_OFFSET_WFIFO) ==
+ IX_NPEDL_MASK_WFIFO_VALID);
+ while (npe_reg_read(npe, IX_NPEDL_REG_OFFSET_STAT) ==
+ IX_NPEDL_MASK_STAT_OFNE)
+ {
+ u32 reg;
+ reg = npe_reg_read(npe, IX_NPEDL_REG_OFFSET_FIFO);
+ printk("%s reset: Read FIFO:=%x\n", npe->plat->name, reg);
+ }
+ while (npe_reg_read(npe, IX_NPEDL_REG_OFFSET_STAT) ==
+ IX_NPEDL_MASK_STAT_IFNE) {
+ npe_debg_inst_exec(npe, INSTR_RD_FIFO, 0, 0);
+ }
+
+ /* Reset the mailbox reg */
+ npe_reg_write(npe, IX_NPEDL_REG_OFFSET_MBST, RESET_MBST_VAL);
+ npe_debg_inst_exec(npe, INSTR_RESET_MBOX, 0, 0);
+
+ /* Reset the physical registers in the NPE register file */
+ for (i=0; i<NPE_PHYS_REG; i++) {
+ npe_logical_reg_write16(npe, NPE_REGMAP, i >> 1);
+ npe_logical_reg_write32(npe, (i&1) *4, 0);
+ }
+
+ /* Reset the context store. Iterate over the 16 ctx s */
+ for(i=0; i<16; i++) {
+ for (reg=0; reg<4; reg++) {
+ /* There is no (STEVT) register for Context 0.
+ * ignore if register=0 and ctx=0 */
+ if (!(reg || i))
+ continue;
+ /* Context 0 has no STARTPC. Instead, this value is
+ * used to set NextPC for Background ECS,
+ * to set where NPE starts executing code
+ */
+ if (!i && reg==1) {
+ u32 r;
+ r = npe_read_ecs_reg(npe, ECS_BG_CTXT_REG_0);
+ r &= ~MASK_ECS_REG_0_NEXTPC;
+ r |= (cr->reset << 16) & MASK_ECS_REG_0_NEXTPC;
+ continue;
+ }
+ cr = ctx_reg + reg;
+ switch (cr->size) {
+ case 8:
+ npe_logical_reg_write8(npe, cr->addr,
+ cr->reset);
+ break;
+ case 16:
+ npe_logical_reg_write16(npe, cr->addr,
+ cr->reset);
+ }
+ }
+ }
+ npe_debg_postexec(npe);
+
+ for (i=0; i< ARRAY_SIZE(ecs_reset); i++) {
+ npe_write_ecs_reg(npe, ecs_reset[i].reg, ecs_reset[i].val);
+ }
+ npe_write_exctl(npe, IX_NPEDL_EXCTL_CMD_CLR_PROFILE_CNT);
+
+ for (i=IX_NPEDL_REG_OFFSET_EXCT; i<=IX_NPEDL_REG_OFFSET_AP3; i+=4) {
+ npe_reg_write(npe, i, 0);
+ }
+
+ npe_reg_write(npe, IX_NPEDL_REG_OFFSET_WC, 0);
+
+ reg = *IXP4XX_EXP_CFG2;
+ reg |= 0x800 << npe->plat->id; /* IX_FUSE_NPE[ABC] */
+ *IXP4XX_EXP_CFG2 = reg;
+ reg &= ~(0x800 << npe->plat->id); /* IX_FUSE_NPE[ABC] */
+ *IXP4XX_EXP_CFG2 = reg;
+
+ npe_stop(npe);
+
+ npe_reg_write(npe, IX_NPEDL_REG_OFFSET_CTL,
+ cfg_ctrl & CONFIG_CTRL_REG_MASK);
+ npe->loaded = 0;
+}
+
+
+void npe_stop(struct npe_info *npe)
+{
+ npe_write_exctl(npe, IX_NPEDL_EXCTL_CMD_NPE_STOP);
+ npe_write_exctl(npe, IX_NPEDL_EXCTL_CMD_NPE_CLR_PIPE);
+}
+
+static void npe_reset_active(struct npe_info *npe, u32 reg)
+{
+ u32 regval;
+
+ regval = npe_read_ecs_reg(npe, reg);
+ regval &= ~IX_NPEDL_MASK_ECS_REG_0_ACTIVE;
+ npe_write_ecs_reg(npe, reg, regval);
+}
+
+void npe_start(struct npe_info *npe)
+{
+ npe_reset_active(npe, IX_NPEDL_ECS_PRI_1_CTXT_REG_0);
+ npe_reset_active(npe, IX_NPEDL_ECS_PRI_2_CTXT_REG_0);
+ npe_reset_active(npe, IX_NPEDL_ECS_DBG_CTXT_REG_0);
+
+ npe_write_exctl(npe, IX_NPEDL_EXCTL_CMD_NPE_CLR_PIPE);
+ npe_write_exctl(npe, IX_NPEDL_EXCTL_CMD_NPE_START);
+}
+
+EXPORT_SYMBOL(npe_stop);
+EXPORT_SYMBOL(npe_start);
+EXPORT_SYMBOL(npe_reset);
Index: linux-2.6.21-rc1-arm/drivers/net/ixp4xx/npe_mh.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.21-rc1-arm/drivers/net/ixp4xx/npe_mh.c 2007-02-21 02:24:35.000000000 -0800
@@ -0,0 +1,170 @@
+/*
+ * npe_mh.c - NPE message handler.
+ *
+ * Copyright (C) 2006 Christian Hohnstaedt <chohnstaedt@innominate.com>
+ *
+ * This file is released under the GPLv2
+ */
+
+#include <linux/ixp_npe.h>
+#include <linux/slab.h>
+
+#define MAX_RETRY 200
+
+struct npe_mh_msg {
+ union {
+ u8 byte[8]; /* Very desciptive name, I know ... */
+ u32 data[2];
+ } u;
+};
+
+/*
+ * The whole code in this function must be reworked.
+ * It is in a state that works but is not rock solid
+ */
+static int send_message(struct npe_info *npe, struct npe_mh_msg *msg)
+{
+ int i,j;
+ u32 send[2], recv[2];
+
+ for (i=0; i<2; i++)
+ send[i] = be32_to_cpu(msg->u.data[i]);
+
+ if ((npe_reg_read(npe, IX_NPEDL_REG_OFFSET_STAT) &
+ IX_NPEMH_NPE_STAT_IFNE))
+ return -1;
+
+ npe_reg_write(npe, IX_NPEDL_REG_OFFSET_FIFO, send[0]);
+ for(i=0; i<MAX_RETRY; i++) {
+ /* if the IFNF status bit is unset then the inFIFO is full */
+ if (npe_reg_read(npe, IX_NPEDL_REG_OFFSET_STAT) &
+ IX_NPEMH_NPE_STAT_IFNF)
+ break;
+ }
+ if (i>=MAX_RETRY)
+ return -1;
+ npe_reg_write(npe, IX_NPEDL_REG_OFFSET_FIFO, send[1]);
+ i=0;
+ while (!(npe_reg_read(npe, IX_NPEDL_REG_OFFSET_STAT) &
+ IX_NPEMH_NPE_STAT_OFNE)) {
+ if (i++>MAX_RETRY) {
+ printk("Waiting for Output FIFO NotEmpty failed\n");
+ return -1;
+ }
+ }
+ //printk("Output FIFO Not Empty. Loops: %d\n", i);
+ j=0;
+ while (npe_reg_read(npe, IX_NPEDL_REG_OFFSET_STAT) &
+ IX_NPEMH_NPE_STAT_OFNE) {
+ recv[j&1] = npe_reg_read(npe,IX_NPEDL_REG_OFFSET_FIFO);
+ j++;
+ }
+ if ((recv[0] != send[0]) || (recv[1] != send[1])) {
+ if (send[0] || send[1]) {
+ /* all CMDs return the complete message as answer,
+ * only GETSTATUS returns the ImageID of the NPE
+ */
+ printk("Unexpected answer: "
+ "Send %08x:%08x Ret %08x:%08x\n",
+ send[0], send[1], recv[0], recv[1]);
+ }
+ }
+ return 0;
+}
+
+#define CMD 0
+#define PORT 1
+#define MAC 2
+
+#define IX_ETHNPE_NPE_GETSTATUS 0x00
+#define IX_ETHNPE_EDB_SETPORTADDRESS 0x01
+#define IX_ETHNPE_GETSTATS 0x04
+#define IX_ETHNPE_RESETSTATS 0x05
+#define IX_ETHNPE_FW_SETFIREWALLMODE 0x0E
+#define IX_ETHNPE_VLAN_SETRXQOSENTRY 0x0B
+#define IX_ETHNPE_SETLOOPBACK_MODE 0x12
+
+#define logical_id(mp) (((mp)->npe_id << 4) | ((mp)->port_id & 0xf))
+
+int npe_mh_status(struct npe_info *npe)
+{
+ struct npe_mh_msg msg;
+
+ memset(&msg, 0, sizeof(msg));
+ msg.u.byte[CMD] = IX_ETHNPE_NPE_GETSTATUS;
+ return send_message(npe, &msg);
+}
+
+int npe_mh_setportaddr(struct npe_info *npe, struct mac_plat_info *mp,
+ u8 *macaddr)
+{
+ struct npe_mh_msg msg;
+
+ msg.u.byte[CMD] = IX_ETHNPE_EDB_SETPORTADDRESS;
+ msg.u.byte[PORT] = mp->eth_id;
+ memcpy(msg.u.byte + MAC, macaddr, 6);
+
+ return send_message(npe, &msg);
+}
+
+int npe_mh_disable_firewall(struct npe_info *npe, struct mac_plat_info *mp)
+{
+ struct npe_mh_msg msg;
+
+ memset(&msg, 0, sizeof(msg));
+ msg.u.byte[CMD] = IX_ETHNPE_FW_SETFIREWALLMODE;
+ msg.u.byte[PORT] = logical_id(mp);
+
+ return send_message(npe, &msg);
+}
+
+int npe_mh_npe_loopback_mode(struct npe_info *npe, struct mac_plat_info *mp,
+ int enable)
+{
+ struct npe_mh_msg msg;
+
+ memset(&msg, 0, sizeof(msg));
+ msg.u.byte[CMD] = IX_ETHNPE_SETLOOPBACK_MODE;
+ msg.u.byte[PORT] = logical_id(mp);
+ msg.u.byte[3] = enable ? 1 : 0;
+
+ return send_message(npe, &msg);
+}
+
+int npe_mh_set_rxqid(struct npe_info *npe, struct mac_plat_info *mp, int qid)
+{
+ struct npe_mh_msg msg;
+ int i, ret;
+
+ memset(&msg, 0, sizeof(msg));
+ msg.u.byte[CMD] = IX_ETHNPE_VLAN_SETRXQOSENTRY;
+ msg.u.byte[PORT] = logical_id(mp);
+ msg.u.byte[5] = qid | 0x80;
+ msg.u.byte[7] = qid<<4;
+ for(i=0; i<8; i++) {
+ msg.u.byte[3] = i;
+ if ((ret = send_message(npe, &msg)))
+ return ret;
+ }
+ return 0;
+}
+
+int npe_mh_get_stats(struct npe_info *npe, struct mac_plat_info *mp, u32 phys,
+ int reset)
+{
+ struct npe_mh_msg msg;
+ memset(&msg, 0, sizeof(msg));
+ msg.u.byte[CMD] = reset ? IX_ETHNPE_RESETSTATS : IX_ETHNPE_GETSTATS;
+ msg.u.byte[PORT] = logical_id(mp);
+ msg.u.data[1] = cpu_to_npe32(cpu_to_be32(phys));
+
+ return send_message(npe, &msg);
+}
+
+
+EXPORT_SYMBOL(npe_mh_status);
+EXPORT_SYMBOL(npe_mh_setportaddr);
+EXPORT_SYMBOL(npe_mh_disable_firewall);
+EXPORT_SYMBOL(npe_mh_set_rxqid);
+EXPORT_SYMBOL(npe_mh_npe_loopback_mode);
+EXPORT_SYMBOL(npe_mh_get_stats);
Index: linux-2.6.21-rc1-arm/drivers/net/ixp4xx/phy.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.21-rc1-arm/drivers/net/ixp4xx/phy.c 2007-02-21 02:24:35.000000000 -0800
@@ -0,0 +1,113 @@
+/*
+ * phy.c - MDIO functions and mii initialisation
+ *
+ * Copyright (C) 2006 Christian Hohnstaedt <chohnstaedt@innominate.com>
+ *
+ * This file is released under the GPLv2
+ */
+
+
+#include <linux/mutex.h>
+#include "mac.h"
+
+#define MAX_PHYS (1<<5)
+
+/*
+ * We must always use the same MAC for acessing the MDIO
+ * We may not use each MAC for its PHY :-(
+ */
+
+static struct net_device *phy_dev = NULL;
+static struct mutex mtx;
+
+/* here we remember if the PHY is alive, to avoid log dumping */
+static int phy_works[MAX_PHYS];
+
+int mdio_read_register(struct net_device *dev, int phy_addr, int phy_reg)
+{
+ struct mac_info *mac;
+ u32 cmd, reg;
+ int cnt = 0;
+
+ if (!phy_dev)
+ return 0;
+
+ mac = netdev_priv(phy_dev);
+ cmd = mdio_cmd(phy_addr, phy_reg);
+ mutex_lock_interruptible(&mtx);
+ mac_mdio_cmd_write(mac, cmd);
+ while((cmd = mac_mdio_cmd_read(mac)) & MII_GO) {
+ if (++cnt >= 100) {
+ printk("%s: PHY[%d] access failed\n",
+ dev->name, phy_addr);
+ break;
+ }
+ schedule();
+ }
+ reg = mac_mdio_status_read(mac);
+ mutex_unlock(&mtx);
+ if (reg & MII_READ_FAIL) {
+ if (phy_works[phy_addr]) {
+ printk("%s: PHY[%d] unresponsive\n",
+ dev->name, phy_addr);
+ }
+ reg = 0;
+ phy_works[phy_addr] = 0;
+ } else {
+ if ( !phy_works[phy_addr]) {
+ printk("%s: PHY[%d] responsive again\n",
+ dev->name, phy_addr);
+ }
+ phy_works[phy_addr] = 1;
+ }
+ return reg & 0xffff;
+}
+
+void
+mdio_write_register(struct net_device *dev, int phy_addr, int phy_reg, int val)
+{
+ struct mac_info *mac;
+ u32 cmd;
+ int cnt=0;
+
+ if (!phy_dev)
+ return;
+
+ mac = netdev_priv(phy_dev);
+ cmd = mdio_cmd(phy_addr, phy_reg) | MII_WRITE | val;
+
+ mutex_lock_interruptible(&mtx);
+ mac_mdio_cmd_write(mac, cmd);
+ while((cmd = mac_mdio_cmd_read(mac)) & MII_GO) {
+ if (++cnt >= 100) {
+ printk("%s: PHY[%d] access failed\n",
+ dev->name, phy_addr);
+ break;
+ }
+ schedule();
+ }
+ mutex_unlock(&mtx);
+}
+
+void init_mdio(struct net_device *dev, int phy_id)
+{
+ struct mac_info *mac = netdev_priv(dev);
+ int i;
+
+ /* All phy operations should use the same MAC
+ * (my experience)
+ */
+ if (mac->plat->eth_id == 0) {
+ mutex_init(&mtx);
+ phy_dev = dev;
+ for (i=0; i<MAX_PHYS; i++)
+ phy_works[i] = 1;
+ }
+ mac->mii.dev = dev;
+ mac->mii.phy_id = phy_id;
+ mac->mii.phy_id_mask = MAX_PHYS - 1;
+ mac->mii.reg_num_mask = 0x1f;
+ mac->mii.mdio_read = mdio_read_register;
+ mac->mii.mdio_write = mdio_write_register;
+}
+
Index: linux-2.6.21-rc1-arm/drivers/net/ixp4xx/ucode_dl.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.21-rc1-arm/drivers/net/ixp4xx/ucode_dl.c 2007-02-21 02:24:35.000000000 -0800
@@ -0,0 +1,479 @@
+/*
+ * ucode_dl.c - provide an NPE device and a char-dev for microcode download
+ *
+ * Copyright (C) 2006 Christian Hohnstaedt <chohnstaedt@innominate.com>
+ *
+ * This file is released under the GPLv2
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/miscdevice.h>
+#include <linux/platform_device.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/firmware.h>
+#include <linux/dma-mapping.h>
+#include <linux/byteorder/swab.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+
+#include <linux/ixp_npe.h>
+
+#define IXNPE_VERSION "IXP4XX NPE driver Version 0.3.0"
+
+#define DL_MAGIC 0xfeedf00d
+#define DL_MAGIC_SWAP 0x0df0edfe
+
+#define EOF_BLOCK 0xf
+#define IMG_SIZE(image) (((image)->size * sizeof(u32)) + \
+ sizeof(struct dl_image))
+
+#define BT_INSTR 0
+#define BT_DATA 1
+
+enum blk_type {
+ instruction,
+ 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;
+ u32 data[0];
+};
+
+static struct platform_driver ixp4xx_npe_driver;
+
+static int match_by_npeid(struct device *dev, void *id)
+{
+ struct npe_info *npe = dev_get_drvdata(dev);
+ if (!npe->plat)
+ return 0;
+ return (npe->plat->id == *(int*)id);
+}
+
+struct device *get_npe_by_id(int id)
+{
+ struct device *dev = driver_find_device(&ixp4xx_npe_driver.driver,
+ NULL, &id, match_by_npeid);
+ if (dev) {
+ struct npe_info *npe = dev_get_drvdata(dev);
+ if (!try_module_get(THIS_MODULE)) {
+ put_device(dev);
+ return NULL;
+ }
+ npe->usage++;
+ }
+ return dev;
+}
+
+void return_npe_dev(struct device *dev)
+{
+ struct npe_info *npe = dev_get_drvdata(dev);
+ put_device(dev);
+ module_put(THIS_MODULE);
+ npe->usage--;
+}
+
+static int
+download_block(struct npe_info *npe, struct dl_codeblock *cb, unsigned type)
+{
+ int i;
+ int cmd;
+
+ switch (type) {
+ case BT_DATA:
+ cmd = IX_NPEDL_EXCTL_CMD_WR_DATA_MEM;
+ if (cb->npe_addr + cb->size > npe->plat->data_size) {
+ printk(KERN_INFO "Data size too large: %d+%d > %d\n",
+ cb->npe_addr, cb->size, npe->plat->data_size);
+ return -EIO;
+ }
+ break;
+ case BT_INSTR:
+ cmd = IX_NPEDL_EXCTL_CMD_WR_INS_MEM;
+ if (cb->npe_addr + cb->size > npe->plat->inst_size) {
+ printk(KERN_INFO "Instr size too large: %d+%d > %d\n",
+ cb->npe_addr, cb->size, npe->plat->inst_size);
+ return -EIO;
+ }
+ break;
+ default:
+ printk(KERN_INFO "Unknown CMD: %d\n", type);
+ return -EIO;
+ }
+
+ for (i=0; i < cb->size; i++) {
+ npe_write_cmd(npe, cb->npe_addr + i, cb->data[i], cmd);
+ }
+
+ return 0;
+}
+
+static 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;
+
+ if (!dev) {
+ dev = get_npe_by_id( (image->id >> 24) & 0xf);
+ return_npe_dev(dev);
+ }
+ if (!dev)
+ return -ENODEV;
+
+ npe = dev_get_drvdata(dev);
+ if (npe->loaded && (npe->usage > 0)) {
+ printk(KERN_INFO "Cowardly refusing to reload an Image "
+ "into the used and running %s\n", npe->plat->name);
+ return 0; /* indicate success anyway... */
+ }
+ if (!cpu_is_ixp46x() && ((image->id >> 28) & 0xf)) {
+ printk(KERN_INFO "IXP46x NPE image ignored on IXP42x\n");
+ return -EIO;
+ }
+
+ npe_stop(npe);
+ npe_reset(npe);
+
+ for (blk = image->u.block; blk->type != EOF_BLOCK; blk++) {
+ if (blk->offset > image->size) {
+ printk(KERN_INFO "Block offset out of range\n");
+ return -EIO;
+ }
+ cb = (struct dl_codeblock*)&image->u.data[blk->offset];
+ if (blk->offset + cb->size + 2 > image->size) {
+ printk(KERN_INFO "Codeblock size out of range\n");
+ return -EIO;
+ }
+ if ((ret = download_block(npe, cb, blk->type)))
+ return ret;
+ }
+ *(u32*)npe->img_info = cpu_to_be32(image->id);
+ npe_start(npe);
+
+ printk(KERN_INFO "Image loaded to %s Func:%x, Rel: %x:%x, Status: %x\n",
+ npe->plat->name, npe->img_info[1], npe->img_info[2],
+ npe->img_info[3], npe_status(npe));
+ if (npe_mh_status(npe)) {
+ printk(KERN_ERR "%s not responding\n", npe->plat->name);
+ }
+ npe->loaded = 1;
+ return 0;
+}
+
+static int ucode_open(struct inode *inode, struct file *file)
+{
+ file->private_data = kmalloc(sizeof(struct dl_image), GFP_KERNEL);
+ if (!file->private_data)
+ return -ENOMEM;
+ return 0;
+}
+
+static int ucode_close(struct inode *inode, struct file *file)
+{
+ kfree(file->private_data);
+ return 0;
+}
+
+static ssize_t ucode_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ union {
+ char *data;
+ struct dl_image *image;
+ } u;
+ const char __user *cbuf = buf;
+
+ u.data = file->private_data;
+
+ while (count) {
+ int len;
+ if (*ppos < sizeof(struct dl_image)) {
+ len = sizeof(struct dl_image) - *ppos;
+ len = len > count ? count : len;
+ if (copy_from_user(u.data + *ppos, cbuf, len))
+ return -EFAULT;
+ count -= len;
+ *ppos += len;
+ cbuf += len;
+ continue;
+ } else if (*ppos == sizeof(struct dl_image)) {
+ void *data;
+ if (u.image->magic == DL_MAGIC_SWAP) {
+ printk(KERN_INFO "swapped image found\n");
+ u.image->id = swab32(u.image->id);
+ u.image->size = swab32(u.image->size);
+ } else if (u.image->magic != DL_MAGIC) {
+ printk(KERN_INFO "Bad magic:%x\n",
+ u.image->magic);
+ return -EFAULT;
+ }
+ len = IMG_SIZE(u.image);
+ data = kmalloc(len, GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+ memcpy(data, u.data, *ppos);
+ kfree(u.data);
+ u.data = (char*)data;
+ file->private_data = data;
+ }
+ len = IMG_SIZE(u.image) - *ppos;
+ len = len > count ? count : len;
+ if (copy_from_user(u.data + *ppos, cbuf, len))
+ return -EFAULT;
+ count -= len;
+ *ppos += len;
+ cbuf += len;
+ if (*ppos == IMG_SIZE(u.image)) {
+ int ret, i;
+ *ppos = 0;
+ if (u.image->magic == DL_MAGIC_SWAP) {
+ for (i=0; i<u.image->size; i++) {
+ u.image->u.data[i] =
+ swab32(u.image->u.data[i]);
+ }
+ u.image->magic = swab32(u.image->magic);
+ }
+ ret = store_npe_image(u.image, NULL);
+ if (ret) {
+ printk(KERN_INFO "Error in NPE image: %x\n",
+ u.image->id);
+ return ret;
+ }
+ }
+ }
+ return (cbuf-buf);
+}
+
+static void npe_firmware_probe(struct device *dev)
+{
+#if (defined(CONFIG_FW_LOADER) || defined(CONFIG_FW_LOADER_MODULE)) \
+ && defined(MODULE)
+ const struct firmware *fw_entry;
+ struct npe_info *npe = dev_get_drvdata(dev);
+ struct dl_image *image;
+ int ret = -1, i;
+
+ if (request_firmware(&fw_entry, npe->plat->name, dev) != 0) {
+ return;
+ }
+ image = (struct dl_image*)fw_entry->data;
+ /* Sanity checks */
+ if (fw_entry->size < sizeof(struct dl_image)) {
+ printk(KERN_ERR "Firmware error: too small\n");
+ goto out;
+ }
+ if (image->magic == DL_MAGIC_SWAP) {
+ printk(KERN_INFO "swapped image found\n");
+ image->id = swab32(image->id);
+ image->size = swab32(image->size);
+ } else if (image->magic != DL_MAGIC) {
+ printk(KERN_ERR "Bad magic:%x\n", image->magic);
+ goto out;
+ }
+ if (IMG_SIZE(image) != fw_entry->size) {
+ printk(KERN_ERR "Firmware error: bad size\n");
+ goto out;
+ }
+ if (((image->id >> 24) & 0xf) != npe->plat->id) {
+ printk(KERN_ERR "NPE id missmatch\n");
+ goto out;
+ }
+ if (image->magic == DL_MAGIC_SWAP) {
+ for (i=0; i<image->size; i++) {
+ image->u.data[i] = swab32(image->u.data[i]);
+ }
+ image->magic = swab32(image->magic);
+ }
+
+ ret = store_npe_image(image, dev);
+out:
+ if (ret) {
+ printk(KERN_ERR "Error downloading Firmware for %s\n",
+ npe->plat->name);
+ }
+ release_firmware(fw_entry);
+#endif
+}
+
+static void disable_npe_irq(struct npe_info *npe)
+{
+ u32 reg;
+ reg = npe_reg_read(npe, IX_NPEDL_REG_OFFSET_CTL);
+ reg &= ~(IX_NPEMH_NPE_CTL_OFE | IX_NPEMH_NPE_CTL_IFE);
+ reg |= IX_NPEMH_NPE_CTL_OFEWE | IX_NPEMH_NPE_CTL_IFEWE;
+ npe_reg_write(npe, IX_NPEDL_REG_OFFSET_CTL, reg);
+}
+
+static ssize_t show_npe_state(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct npe_info *npe = dev_get_drvdata(dev);
+
+ strcpy(buf, npe_status(npe) & IX_NPEDL_EXCTL_STATUS_RUN ?
+ "start\n" : "stop\n");
+ return strlen(buf);
+}
+
+static ssize_t set_npe_state(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct npe_info *npe = dev_get_drvdata(dev);
+
+ if (npe->usage) {
+ printk("%s in use: read-only\n", npe->plat->name);
+ return count;
+ }
+ if (!strncmp(buf, "start", 5)) {
+ npe_start(npe);
+ }
+ if (!strncmp(buf, "stop", 4)) {
+ npe_stop(npe);
+ }
+ if (!strncmp(buf, "reset", 5)) {
+ npe_stop(npe);
+ npe_reset(npe);
+ }
+ return count;
+}
+
+static DEVICE_ATTR(state, S_IRUGO | S_IWUSR, show_npe_state, set_npe_state);
+
+static int npe_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ struct npe_info *npe;
+ struct npe_plat_data *plat = pdev->dev.platform_data;
+ int err, size, ret=0;
+
+ if (!(res = platform_get_resource(pdev, IORESOURCE_MEM, 0)))
+ return -EIO;
+
+ if (!(npe = kzalloc(sizeof(struct npe_info), GFP_KERNEL)))
+ return -ENOMEM;
+
+ size = res->end - res->start +1;
+ npe->res = request_mem_region(res->start, size, plat->name);
+ if (!npe->res) {
+ ret = -EBUSY;
+ printk(KERN_ERR "Failed to get memregion(%x, %x)\n",
+ res->start, size);
+ goto out_free;
+ }
+
+ npe->addr = ioremap(res->start, size);
+ if (!npe->addr) {
+ ret = -ENOMEM;
+ printk(KERN_ERR "Failed to ioremap(%x, %x)\n",
+ res->start, size);
+ goto out_rel;
+ }
+
+ pdev->dev.coherent_dma_mask = DMA_32BIT_MASK;
+
+ platform_set_drvdata(pdev, npe);
+
+ err = device_create_file(&pdev->dev, &dev_attr_state);
+ if (err)
+ goto out_rel;
+
+ npe->plat = plat;
+ disable_npe_irq(npe);
+ npe->usage = 0;
+ npe_reset(npe);
+ npe_firmware_probe(&pdev->dev);
+
+ return 0;
+
+out_rel:
+ release_resource(npe->res);
+out_free:
+ kfree(npe);
+ return ret;
+}
+
+static struct file_operations ucode_dl_fops = {
+ .owner = THIS_MODULE,
+ .write = ucode_write,
+ .open = ucode_open,
+ .release = ucode_close,
+};
+
+static struct miscdevice ucode_dl_dev = {
+ .minor = MICROCODE_MINOR,
+ .name = "ixp4xx_ucode",
+ .fops = &ucode_dl_fops,
+};
+
+static int npe_remove(struct platform_device *pdev)
+{
+ struct npe_info *npe = platform_get_drvdata(pdev);
+
+ device_remove_file(&pdev->dev, &dev_attr_state);
+
+ iounmap(npe->addr);
+ release_resource(npe->res);
+ kfree(npe);
+ return 0;
+}
+
+static struct platform_driver ixp4xx_npe_driver = {
+ .driver = {
+ .name = "ixp4xx_npe",
+ .owner = THIS_MODULE,
+ },
+ .probe = npe_probe,
+ .remove = npe_remove,
+};
+
+static int __init init_npedriver(void)
+{
+ int ret;
+ if ((ret = misc_register(&ucode_dl_dev))){
+ printk(KERN_ERR "Failed to register misc device %d\n",
+ MICROCODE_MINOR);
+ return ret;
+ }
+ if ((ret = platform_driver_register(&ixp4xx_npe_driver)))
+ misc_deregister(&ucode_dl_dev);
+ else
+ printk(KERN_INFO IXNPE_VERSION " initialized\n");
+
+ return ret;
+
+}
+
+static void __exit finish_npedriver(void)
+{
+ misc_deregister(&ucode_dl_dev);
+ platform_driver_unregister(&ixp4xx_npe_driver);
+}
+
+module_init(init_npedriver);
+module_exit(finish_npedriver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Christian Hohnstaedt <chohnstaedt@innominate.com>");
+
+EXPORT_SYMBOL(get_npe_by_id);
+EXPORT_SYMBOL(return_npe_dev);
Index: linux-2.6.21-rc1-arm/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h
===================================================================
--- linux-2.6.21-rc1-arm.orig/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h 2007-02-21 02:24:18.000000000 -0800
+++ linux-2.6.21-rc1-arm/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h 2007-02-21 02:24:35.000000000 -0800
@@ -22,6 +22,8 @@
#ifndef _ASM_ARM_IXP4XX_H_
#define _ASM_ARM_IXP4XX_H_
+#include "npe_regs.h"
+
/*
* IXP4xx Linux Memory Map:
*
@@ -44,6 +46,12 @@
*/
/*
+ * PCI Memory Space
+ */
+#define IXP4XX_PCIMEM_BASE_PHYS (0x48000000)
+#define IXP4XX_PCIMEM_REGION_SIZE (0x04000000)
+#define IXP4XX_PCIMEM_BAR_SIZE (0x01000000)
+/*
* Queue Manager
*/
#define IXP4XX_QMGR_BASE_PHYS (0x60000000)
@@ -322,7 +330,13 @@
#define PCI_ATPDMA0_LENADDR_OFFSET 0x48
#define PCI_ATPDMA1_AHBADDR_OFFSET 0x4C
#define PCI_ATPDMA1_PCIADDR_OFFSET 0x50
-#define PCI_ATPDMA1_LENADDR_OFFSET 0x54
+#define PCI_ATPDMA1_LENADDR_OFFSET 0x54
+#define PCI_PTADMA0_AHBADDR_OFFSET 0x58
+#define PCI_PTADMA0_PCIADDR_OFFSET 0x5c
+#define PCI_PTADMA0_LENADDR_OFFSET 0x60
+#define PCI_PTADMA1_AHBADDR_OFFSET 0x64
+#define PCI_PTADMA1_PCIADDR_OFFSET 0x68
+#define PCI_PTADMA1_LENADDR_OFFSET 0x6c
/*
* PCI Control/Status Registers
@@ -351,6 +365,12 @@
#define PCI_ATPDMA1_AHBADDR IXP4XX_PCI_CSR(PCI_ATPDMA1_AHBADDR_OFFSET)
#define PCI_ATPDMA1_PCIADDR IXP4XX_PCI_CSR(PCI_ATPDMA1_PCIADDR_OFFSET)
#define PCI_ATPDMA1_LENADDR IXP4XX_PCI_CSR(PCI_ATPDMA1_LENADDR_OFFSET)
+#define PCI_PTADMA0_AHBADDR IXP4XX_PCI_CSR(PCI_PTADMA0_AHBADDR_OFFSET)
+#define PCI_PTADMA0_PCIADDR IXP4XX_PCI_CSR(PCI_PTADMA0_PCIADDR_OFFSET)
+#define PCI_PTADMA0_LENADDR IXP4XX_PCI_CSR(PCI_PTADMA0_LENADDR_OFFSET)
+#define PCI_PTADMA1_AHBADDR IXP4XX_PCI_CSR(PCI_PTADMA1_AHBADDR_OFFSET)
+#define PCI_PTADMA1_PCIADDR IXP4XX_PCI_CSR(PCI_PTADMA1_PCIADDR_OFFSET)
+#define PCI_PTADMA1_LENADDR IXP4XX_PCI_CSR(PCI_PTADMA1_LENADDR_OFFSET)
/*
* PCI register values and bit definitions
@@ -607,6 +627,34 @@
#define DCMD_LENGTH 0x01fff /* length mask (max = 8K - 1) */
+
+/* Fuse Bits of IXP_EXP_CFG2 */
+#define IX_FUSE_RCOMP (1 << 0)
+#define IX_FUSE_USB (1 << 1)
+#define IX_FUSE_HASH (1 << 2)
+#define IX_FUSE_AES (1 << 3)
+#define IX_FUSE_DES (1 << 4)
+#define IX_FUSE_HDLC (1 << 5)
+#define IX_FUSE_AAL (1 << 6)
+#define IX_FUSE_HSS (1 << 7)
+#define IX_FUSE_UTOPIA (1 << 8)
+#define IX_FUSE_ETH0 (1 << 9)
+#define IX_FUSE_ETH1 (1 << 10)
+#define IX_FUSE_NPEA (1 << 11)
+#define IX_FUSE_NPEB (1 << 12)
+#define IX_FUSE_NPEC (1 << 13)
+#define IX_FUSE_PCI (1 << 14)
+#define IX_FUSE_ECC (1 << 15)
+#define IX_FUSE_UTOPIA_PHY_LIMIT (3 << 16)
+#define IX_FUSE_USB_HOST (1 << 18)
+#define IX_FUSE_NPEA_ETH (1 << 19)
+#define IX_FUSE_NPEB_ETH (1 << 20)
+#define IX_FUSE_RSA (1 << 21)
+#define IX_FUSE_XSCALE_MAX_FREQ (3 << 22)
+
+#define IX_FUSE_IXP46X_ONLY IX_FUSE_XSCALE_MAX_FREQ | IX_FUSE_RSA | \
+ IX_FUSE_NPEB_ETH | IX_FUSE_NPEA_ETH | IX_FUSE_USB_HOST | IX_FUSE_ECC
+
#ifndef __ASSEMBLY__
static inline int cpu_is_ixp46x(void)
{
@@ -620,6 +668,15 @@
#endif
return 0;
}
+
+static inline u32 ix_fuse(void)
+{
+ unsigned int fuses = ~(*IXP4XX_EXP_CFG2);
+ if (!cpu_is_ixp46x())
+ fuses &= ~IX_FUSE_IXP46X_ONLY;
+
+ return fuses;
+}
#endif
#endif
Index: linux-2.6.21-rc1-arm/include/asm-arm/arch-ixp4xx/npe_regs.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.21-rc1-arm/include/asm-arm/arch-ixp4xx/npe_regs.h 2007-02-21 02:24:35.000000000 -0800
@@ -0,0 +1,82 @@
+#ifndef NPE_REGS_H
+#define NPE_REGS_H
+
+/* Execution Address */
+#define IX_NPEDL_REG_OFFSET_EXAD 0x00
+/* Execution Data */
+#define IX_NPEDL_REG_OFFSET_EXDATA 0x04
+/* Execution Control */
+#define IX_NPEDL_REG_OFFSET_EXCTL 0x08
+/* Execution Count */
+#define IX_NPEDL_REG_OFFSET_EXCT 0x0C
+/* Action Point 0 */
+#define IX_NPEDL_REG_OFFSET_AP0 0x10
+/* Action Point 1 */
+#define IX_NPEDL_REG_OFFSET_AP1 0x14
+/* Action Point 2 */
+#define IX_NPEDL_REG_OFFSET_AP2 0x18
+/* Action Point 3 */
+#define IX_NPEDL_REG_OFFSET_AP3 0x1C
+/* Watchpoint FIFO */
+#define IX_NPEDL_REG_OFFSET_WFIFO 0x20
+/* Watch Count */
+#define IX_NPEDL_REG_OFFSET_WC 0x24
+/* Profile Count */
+#define IX_NPEDL_REG_OFFSET_PROFCT 0x28
+
+/* Messaging Status */
+#define IX_NPEDL_REG_OFFSET_STAT 0x2C
+/* Messaging Control */
+#define IX_NPEDL_REG_OFFSET_CTL 0x30
+/* Mailbox Status */
+#define IX_NPEDL_REG_OFFSET_MBST 0x34
+/* messaging in/out FIFO */
+#define IX_NPEDL_REG_OFFSET_FIFO 0x38
+
+
+#define IX_NPEDL_MASK_ECS_DBG_REG_2_IF 0x00100000
+#define IX_NPEDL_MASK_ECS_DBG_REG_2_IE 0x00080000
+#define IX_NPEDL_MASK_ECS_REG_0_ACTIVE 0x80000000
+
+#define IX_NPEDL_EXCTL_CMD_NPE_STEP 0x01
+#define IX_NPEDL_EXCTL_CMD_NPE_START 0x02
+#define IX_NPEDL_EXCTL_CMD_NPE_STOP 0x03
+#define IX_NPEDL_EXCTL_CMD_NPE_CLR_PIPE 0x04
+#define IX_NPEDL_EXCTL_CMD_CLR_PROFILE_CNT 0x0C
+#define IX_NPEDL_EXCTL_CMD_RD_INS_MEM 0x10
+#define IX_NPEDL_EXCTL_CMD_WR_INS_MEM 0x11
+#define IX_NPEDL_EXCTL_CMD_RD_DATA_MEM 0x12
+#define IX_NPEDL_EXCTL_CMD_WR_DATA_MEM 0x13
+#define IX_NPEDL_EXCTL_CMD_RD_ECS_REG 0x14
+#define IX_NPEDL_EXCTL_CMD_WR_ECS_REG 0x15
+
+#define IX_NPEDL_EXCTL_STATUS_RUN 0x80000000
+#define IX_NPEDL_EXCTL_STATUS_STOP 0x40000000
+#define IX_NPEDL_EXCTL_STATUS_CLEAR 0x20000000
+
+#define IX_NPEDL_MASK_WFIFO_VALID 0x80000000
+#define IX_NPEDL_MASK_STAT_OFNE 0x00010000
+#define IX_NPEDL_MASK_STAT_IFNE 0x00080000
+
+#define IX_NPEDL_ECS_DBG_CTXT_REG_0 0x0C
+#define IX_NPEDL_ECS_PRI_1_CTXT_REG_0 0x04
+#define IX_NPEDL_ECS_PRI_2_CTXT_REG_0 0x08
+
+/* NPE control register bit definitions */
+#define IX_NPEMH_NPE_CTL_OFE (1 << 16) /**< OutFifoEnable */
+#define IX_NPEMH_NPE_CTL_IFE (1 << 17) /**< InFifoEnable */
+#define IX_NPEMH_NPE_CTL_OFEWE (1 << 24) /**< OutFifoEnableWriteEnable */
+#define IX_NPEMH_NPE_CTL_IFEWE (1 << 25) /**< InFifoEnableWriteEnable */
+
+/* NPE status register bit definitions */
+#define IX_NPEMH_NPE_STAT_OFNE (1 << 16) /**< OutFifoNotEmpty */
+#define IX_NPEMH_NPE_STAT_IFNF (1 << 17) /**< InFifoNotFull */
+#define IX_NPEMH_NPE_STAT_OFNF (1 << 18) /**< OutFifoNotFull */
+#define IX_NPEMH_NPE_STAT_IFNE (1 << 19) /**< InFifoNotEmpty */
+#define IX_NPEMH_NPE_STAT_MBINT (1 << 20) /**< Mailbox interrupt */
+#define IX_NPEMH_NPE_STAT_IFINT (1 << 21) /**< InFifo interrupt */
+#define IX_NPEMH_NPE_STAT_OFINT (1 << 22) /**< OutFifo interrupt */
+#define IX_NPEMH_NPE_STAT_WFINT (1 << 23) /**< WatchFifo interrupt */
+
+#endif
+
Index: linux-2.6.21-rc1-arm/include/asm-arm/arch-ixp4xx/platform.h
===================================================================
--- linux-2.6.21-rc1-arm.orig/include/asm-arm/arch-ixp4xx/platform.h 2007-02-21 02:24:18.000000000 -0800
+++ linux-2.6.21-rc1-arm/include/asm-arm/arch-ixp4xx/platform.h 2007-02-21 02:24:35.000000000 -0800
@@ -86,6 +86,25 @@
unsigned long scl_pin;
};
+struct npe_plat_data {
+ const char *name;
+ int data_size;
+ int inst_size;
+ int id; /* Node ID */
+};
+
+struct mac_plat_info {
+ int npe_id; /* Node ID of the NPE for this port */
+ int port_id; /* Port ID for NPE-B @ ixp465 */
+ int eth_id; /* Physical ID */
+ int phy_id; /* ID of the connected PHY (PCB/platform dependent) */
+ int rxq_id; /* Queue ID of the RX-free q */
+ int rxdoneq_id; /* where incoming packets are returned */
+ int txq_id; /* Where to push the outgoing packets */
+ unsigned char hwaddr[6]; /* Desired hardware address */
+
+};
+
/*
* This structure provide a means for the board setup code
* to give information to th pata_ixp4xx driver. It is
Index: linux-2.6.21-rc1-arm/include/linux/ixp_crypto.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.21-rc1-arm/include/linux/ixp_crypto.h 2007-02-21 02:24:35.000000000 -0800
@@ -0,0 +1,192 @@
+
+#ifndef IX_CRYPTO_H
+#define IX_CRYPTO_H
+
+#define MAX_KEYLEN 64
+#define NPE_CTX_LEN 80
+#define AES_BLOCK128 16
+
+#define NPE_OP_HASH_GEN_ICV 0x50
+#define NPE_OP_ENC_GEN_KEY 0xc9
+
+
+#define NPE_OP_HASH_VERIFY 0x01
+#define NPE_OP_CCM_ENABLE 0x04
+#define NPE_OP_CRYPT_ENABLE 0x08
+#define NPE_OP_HASH_ENABLE 0x10
+#define NPE_OP_NOT_IN_PLACE 0x20
+#define NPE_OP_HMAC_DISABLE 0x40
+#define NPE_OP_CRYPT_ENCRYPT 0x80
+
+#define MOD_ECB 0x0000
+#define MOD_CTR 0x1000
+#define MOD_CBC_ENC 0x2000
+#define MOD_CBC_DEC 0x3000
+#define MOD_CCM_ENC 0x4000
+#define MOD_CCM_DEC 0x5000
+
+#define ALGO_AES 0x0800
+#define CIPH_DECR 0x0000
+#define CIPH_ENCR 0x0400
+
+#define MOD_DES 0x0000
+#define MOD_TDEA2 0x0100
+#define MOD_TDEA3 0x0200
+#define MOD_AES128 0x0000
+#define MOD_AES192 0x0100
+#define MOD_AES256 0x0200
+
+#define KEYLEN_128 4
+#define KEYLEN_192 6
+#define KEYLEN_256 8
+
+#define CIPHER_TYPE_NULL 0
+#define CIPHER_TYPE_DES 1
+#define CIPHER_TYPE_3DES 2
+#define CIPHER_TYPE_AES 3
+
+#define CIPHER_MODE_ECB 1
+#define CIPHER_MODE_CTR 2
+#define CIPHER_MODE_CBC 3
+#define CIPHER_MODE_CCM 4
+
+#define HASH_TYPE_NULL 0
+#define HASH_TYPE_MD5 1
+#define HASH_TYPE_SHA1 2
+#define HASH_TYPE_CBCMAC 3
+
+#define OP_REG_DONE 1
+#define OP_REGISTER 2
+#define OP_PERFORM 3
+
+#define STATE_UNREGISTERED 0
+#define STATE_REGISTERED 1
+#define STATE_UNLOADING 2
+
+struct crypt_ctl {
+#ifndef CONFIG_NPE_ADDRESS_COHERENT
+ u8 mode; /* NPE operation */
+ u8 init_len;
+ u16 reserved;
+#else
+ u16 reserved;
+ u8 init_len;
+ u8 mode; /* NPE operation */
+#endif
+ u8 iv[16]; /* IV for CBC mode or CTR IV for CTR mode */
+ union {
+ u32 icv;
+ u32 rev_aes;
+ } addr;
+ u32 src_buf;
+ u32 dest_buf;
+#ifndef CONFIG_NPE_ADDRESS_COHERENT
+ u16 auth_offs; /* Authentication start offset */
+ u16 auth_len; /* Authentication data length */
+ u16 crypt_offs; /* Cryption start offset */
+ u16 crypt_len; /* Cryption data length */
+#else
+ u16 auth_len; /* Authentication data length */
+ u16 auth_offs; /* Authentication start offset */
+ u16 crypt_len; /* Cryption data length */
+ u16 crypt_offs; /* Cryption start offset */
+#endif
+ u32 aadAddr; /* Additional Auth Data Addr for CCM mode */
+ u32 crypto_ctx; /* NPE Crypto Param structure address */
+
+ /* Used by Host */
+ struct ix_sa_ctx *sa_ctx;
+ int oper_type;
+};
+
+struct npe_crypt_cont {
+ union {
+ struct crypt_ctl crypt;
+ u8 rev_aes_key[NPE_CTX_LEN];
+ } ctl;
+ struct npe_crypt_cont *next;
+ struct npe_crypt_cont *virt;
+ dma_addr_t phys;
+};
+
+struct ix_hash_algo {
+ char *name;
+ u32 cfgword;
+ int digest_len;
+ int aad_len;
+ unsigned char *icv;
+ int type;
+};
+
+struct ix_cipher_algo {
+ char *name;
+ u32 cfgword_enc;
+ u32 cfgword_dec;
+ int block_len;
+ int iv_len;
+ int type;
+ int mode;
+};
+
+struct ix_key {
+ u8 key[MAX_KEYLEN];
+ int len;
+};
+
+struct ix_sa_master {
+ struct device *npe_dev;
+ struct qm_queue *sendq;
+ struct qm_queue *recvq;
+ struct dma_pool *dmapool;
+ struct npe_crypt_cont *pool;
+ int pool_size;
+ rwlock_t lock;
+};
+
+struct ix_sa_dir {
+ unsigned char *npe_ctx;
+ dma_addr_t npe_ctx_phys;
+ int npe_ctx_idx;
+ u8 npe_mode;
+};
+
+struct ix_sa_ctx {
+ struct list_head list;
+ struct ix_sa_master *master;
+
+ const struct ix_hash_algo *h_algo;
+ const struct ix_cipher_algo *c_algo;
+ struct ix_key c_key;
+ struct ix_key h_key;
+
+ int digest_len;
+
+ struct ix_sa_dir encrypt;
+ struct ix_sa_dir decrypt;
+
+ struct npe_crypt_cont *rev_aes;
+ gfp_t gfp_flags;
+
+ int state;
+ void *priv;
+
+ void(*reg_cb)(struct ix_sa_ctx*, int);
+ void(*perf_cb)(struct ix_sa_ctx*, void*, int);
+ atomic_t use_cnt;
+};
+
+const struct ix_hash_algo *ix_hash_by_id(int type);
+const struct ix_cipher_algo *ix_cipher_by_id(int type, int mode);
+
+struct ix_sa_ctx *ix_sa_ctx_new(int priv_len, gfp_t flags);
+void ix_sa_ctx_free(struct ix_sa_ctx *sa_ctx);
+
+int ix_sa_crypto_perform(struct ix_sa_ctx *sa_ctx, u8 *data, void *ptr,
+ int datalen, int c_offs, int c_len, int a_offs, int a_len,
+ int hmac, char *iv, int encrypt);
+
+int ix_sa_ctx_setup_cipher_auth(struct ix_sa_ctx *sa_ctx,
+ const struct ix_cipher_algo *cipher,
+ const struct ix_hash_algo *auth, int len);
+
+#endif
Index: linux-2.6.21-rc1-arm/include/linux/ixp_npe.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.21-rc1-arm/include/linux/ixp_npe.h 2007-02-21 02:24:35.000000000 -0800
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2006 Christian Hohnstaedt <chohnstaedt@innominate.com>
+ *
+ * This file is released under the GPLv2
+ */
+
+#ifndef NPE_DEVICE_H
+#define NPE_DEVICE_H
+
+#include <linux/miscdevice.h>
+#include <asm/hardware.h>
+
+#ifdef __ARMEB__
+#undef CONFIG_NPE_ADDRESS_COHERENT
+#else
+#define CONFIG_NPE_ADDRESS_COHERENT
+#endif
+
+#if defined(__ARMEB__) || defined (CONFIG_NPE_ADDRESS_COHERENT)
+#define npe_to_cpu32(x) (x)
+#define npe_to_cpu16(x) (x)
+#define cpu_to_npe32(x) (x)
+#define cpu_to_npe16(x) (x)
+#else
+#error NPE_DATA_COHERENT
+#define NPE_DATA_COHERENT
+#define npe_to_cpu32(x) be32_to_cpu(x)
+#define npe_to_cpu16(x) be16_to_cpu(x)
+#define cpu_to_npe32(x) cpu_to_be32(x)
+#define cpu_to_npe16(x) cpu_to_be16(x)
+#endif
+
+
+struct npe_info {
+ struct resource *res;
+ void __iomem *addr;
+ struct npe_plat_data *plat;
+ u8 img_info[4];
+ int usage;
+ int loaded;
+ u32 exec_count;
+ u32 ctx_reg2;
+};
+
+
+static inline void npe_reg_write(struct npe_info *npe, u32 reg, u32 val)
+{
+ *(volatile u32*)((u8*)(npe->addr) + reg) = val;
+}
+
+static inline u32 npe_reg_read(struct npe_info *npe, u32 reg)
+{
+ return *(volatile u32*)((u8*)(npe->addr) + reg);
+}
+
+static inline u32 npe_status(struct npe_info *npe)
+{
+ return npe_reg_read(npe, IX_NPEDL_REG_OFFSET_EXCTL);
+}
+
+/* ixNpeDlNpeMgrCommandIssue */
+static inline void npe_write_exctl(struct npe_info *npe, u32 cmd)
+{
+ npe_reg_write(npe, IX_NPEDL_REG_OFFSET_EXCTL, cmd);
+}
+/* ixNpeDlNpeMgrWriteCommandIssue */
+static inline void
+npe_write_cmd(struct npe_info *npe, u32 addr, u32 data, int cmd)
+{
+ npe_reg_write(npe, IX_NPEDL_REG_OFFSET_EXDATA, data);
+ npe_reg_write(npe, IX_NPEDL_REG_OFFSET_EXAD, addr);
+ npe_reg_write(npe, IX_NPEDL_REG_OFFSET_EXCTL, cmd);
+}
+/* ixNpeDlNpeMgrReadCommandIssue */
+static inline u32
+npe_read_cmd(struct npe_info *npe, u32 addr, int cmd)
+{
+ npe_reg_write(npe, IX_NPEDL_REG_OFFSET_EXAD, addr);
+ npe_reg_write(npe, IX_NPEDL_REG_OFFSET_EXCTL, cmd);
+ /* Intel reads the data twice - so do we... */
+ npe_reg_read(npe, IX_NPEDL_REG_OFFSET_EXDATA);
+ return npe_reg_read(npe, IX_NPEDL_REG_OFFSET_EXDATA);
+}
+
+/* ixNpeDlNpeMgrExecAccRegWrite */
+static inline void npe_write_ecs_reg(struct npe_info *npe, u32 addr, u32 data)
+{
+ npe_write_cmd(npe, addr, data, IX_NPEDL_EXCTL_CMD_WR_ECS_REG);
+}
+/* ixNpeDlNpeMgrExecAccRegRead */
+static inline u32 npe_read_ecs_reg(struct npe_info *npe, u32 addr)
+{
+ return npe_read_cmd(npe, addr, IX_NPEDL_EXCTL_CMD_RD_ECS_REG);
+}
+
+extern void npe_stop(struct npe_info *npe);
+extern void npe_start(struct npe_info *npe);
+extern void npe_reset(struct npe_info *npe);
+
+extern struct device *get_npe_by_id(int id);
+extern void return_npe_dev(struct device *dev);
+
+/* NPE Messages */
+extern int
+npe_mh_status(struct npe_info *npe);
+extern int
+npe_mh_setportaddr(struct npe_info *npe, struct mac_plat_info *mp, u8 *macaddr);
+extern int
+npe_mh_disable_firewall(struct npe_info *npe, struct mac_plat_info *mp);
+extern int
+npe_mh_set_rxqid(struct npe_info *npe, struct mac_plat_info *mp, int qid);
+extern int
+npe_mh_npe_loopback_mode(struct npe_info *npe, struct mac_plat_info *mp, int enable);
+extern int
+npe_mh_get_stats(struct npe_info *npe, struct mac_plat_info *mp, u32 phys, int reset);
+
+#endif
Index: linux-2.6.21-rc1-arm/include/linux/ixp_qmgr.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.21-rc1-arm/include/linux/ixp_qmgr.h 2007-02-21 02:24:35.000000000 -0800
@@ -0,0 +1,202 @@
+/*
+ * Copyright (C) 2006 Christian Hohnstaedt <chohnstaedt@innominate.com>
+ *
+ * This file is released under the GPLv2
+ */
+
+#ifndef IX_QMGR_H
+#define IX_QMGR_H
+
+#include <linux/skbuff.h>
+#include <linux/list.h>
+#include <linux/if_ether.h>
+#include <linux/spinlock.h>
+#include <linux/platform_device.h>
+#include <linux/ixp_npe.h>
+#include <asm/atomic.h>
+
+/* All offsets are in 32bit words */
+#define QUE_LOW_STAT0 0x100 /* 4x Status of the 32 lower queues 0-31 */
+#define QUE_UO_STAT0 0x104 /* 2x Underflow/Overflow status bits*/
+#define QUE_UPP_STAT0 0x106 /* 2x Status of thew 32 upper queues 32-63 */
+#define INT0_SRC_SELREG0 0x108 /* 4x */
+#define QUE_IE_REG0 0x10c /* 2x */
+#define QUE_INT_REG0 0x10e /* 2x IRQ reg, write 1 to reset IRQ */
+
+#define IX_QMGR_QCFG_BASE 0x800
+#define IX_QMGR_QCFG_SIZE 0x40
+#define IX_QMGR_SRAM_SPACE (IX_QMGR_QCFG_BASE + IX_QMGR_QCFG_SIZE)
+
+#define MAX_QUEUES 32 /* first, we only support the lower 32 queues */
+#define MAX_NPES 3
+
+enum {
+ Q_IRQ_ID_E = 0, /* Queue Empty due to last read */
+ Q_IRQ_ID_NE, /* Queue Nearly Empty due to last read */
+ Q_IRQ_ID_NF, /* Queue Nearly Full due to last write */
+ Q_IRQ_ID_F, /* Queue Full due to last write */
+ Q_IRQ_ID_NOT_E, /* Queue Not Empty due to last write */
+ Q_IRQ_ID_NOT_NE, /* Queue Not Nearly Empty due to last write */
+ Q_IRQ_ID_NOT_NF, /* Queue Not Nearly Full due to last read */
+ Q_IRQ_ID_NOT_F /* Queue Not Full due to last read */
+};
+
+extern struct qm_queue *request_queue(int qid, int len);
+extern void release_queue(struct qm_queue *queue);
+extern int queue_set_irq_src(struct qm_queue *queue, int flag);
+extern void queue_set_watermarks(struct qm_queue *, unsigned ne, unsigned nf);
+extern int queue_len(struct qm_queue *queue);
+
+struct qm_qmgr;
+struct qm_queue;
+
+typedef void(*queue_cb)(struct qm_queue *);
+
+struct qm_queue {
+ int addr; /* word offset from IX_QMGR_SRAM_SPACE */
+ int len; /* size in words */
+ int id; /* Q Id */
+ u32 __iomem *acc_reg;
+ struct device *dev;
+ atomic_t use;
+ queue_cb irq_cb;
+ void *cb_data;
+};
+
+#ifndef CONFIG_NPE_ADDRESS_COHERENT
+struct eth_ctl {
+ u32 next;
+ u16 buf_len;
+ u16 pkt_len;
+ u32 phys_addr;
+ u8 dest_id;
+ u8 src_id;
+ u16 flags;
+ u8 qos;
+ u8 padlen;
+ u16 vlan_tci;
+ u8 dest_mac[ETH_ALEN];
+ u8 src_mac[ETH_ALEN];
+};
+
+#else
+struct eth_ctl {
+ u32 next;
+ u16 pkt_len;
+ u16 buf_len;
+ u32 phys_addr;
+ u16 flags;
+ u8 src_id;
+ u8 dest_id;
+ u16 vlan_tci;
+ u8 padlen;
+ u8 qos;
+ u8 dest_mac[ETH_ALEN];
+ u8 src_mac[ETH_ALEN];
+};
+#endif
+
+struct npe_cont {
+ struct eth_ctl eth;
+ void *data;
+ struct npe_cont *next;
+ struct npe_cont *virt;
+ dma_addr_t phys;
+};
+
+struct qm_qmgr {
+ u32 __iomem *addr;
+ struct resource *res;
+ struct qm_queue *queues[MAX_QUEUES];
+ rwlock_t lock;
+ struct npe_cont *pool;
+ struct dma_pool *dmapool;
+ int irq;
+};
+
+static inline void queue_write_cfg_reg(struct qm_queue *queue, u32 val)
+{
+ struct qm_qmgr *qmgr = dev_get_drvdata(queue->dev);
+ *(qmgr->addr + IX_QMGR_QCFG_BASE + queue->id) = val;
+}
+static inline u32 queue_read_cfg_reg(struct qm_queue *queue)
+{
+ struct qm_qmgr *qmgr = dev_get_drvdata(queue->dev);
+ return *(qmgr->addr + IX_QMGR_QCFG_BASE + queue->id);
+}
+
+static inline void queue_ack_irq(struct qm_queue *queue)
+{
+ struct qm_qmgr *qmgr = dev_get_drvdata(queue->dev);
+ *(qmgr->addr + QUE_INT_REG0) = 1 << queue->id;
+}
+
+static inline void queue_enable_irq(struct qm_queue *queue)
+{
+ struct qm_qmgr *qmgr = dev_get_drvdata(queue->dev);
+ *(qmgr->addr + QUE_IE_REG0) |= 1 << queue->id;
+}
+
+static inline void queue_disable_irq(struct qm_queue *queue)
+{
+ struct qm_qmgr *qmgr = dev_get_drvdata(queue->dev);
+ *(qmgr->addr + QUE_IE_REG0) &= ~(1 << queue->id);
+}
+
+static inline void queue_put_entry(struct qm_queue *queue, u32 entry)
+{
+ *(queue->acc_reg) = npe_to_cpu32(entry);
+}
+
+static inline u32 queue_get_entry(struct qm_queue *queue)
+{
+ return cpu_to_npe32(*queue->acc_reg);
+}
+
+static inline struct npe_cont *qmgr_get_cont(struct qm_qmgr *qmgr)
+{
+ unsigned long flags;
+ struct npe_cont *cont;
+
+ if (!qmgr->pool)
+ return NULL;
+ write_lock_irqsave(&qmgr->lock, flags);
+ cont = qmgr->pool;
+ qmgr->pool = cont->next;
+ write_unlock_irqrestore(&qmgr->lock, flags);
+ return cont;
+}
+
+static inline void qmgr_return_cont(struct qm_qmgr *qmgr,struct npe_cont *cont)
+{
+ unsigned long flags;
+
+ write_lock_irqsave(&qmgr->lock, flags);
+ cont->next = qmgr->pool;
+ qmgr->pool = cont;
+ write_unlock_irqrestore(&qmgr->lock, flags);
+}
+
+static inline int queue_stat(struct qm_queue *queue)
+{
+ struct qm_qmgr *qmgr = dev_get_drvdata(queue->dev);
+ u32 reg = *(qmgr->addr + QUE_UO_STAT0 + (queue->id >> 4));
+ return (reg >> (queue->id & 0xf) << 1) & 3;
+}
+
+/* Prints the queue state, which is very, very helpfull for debugging */
+static inline void queue_state(struct qm_queue *queue)
+{
+ u32 val=0, lstat=0;
+ int offs;
+ struct qm_qmgr *qmgr = dev_get_drvdata(queue->dev);
+
+ offs = queue->id/8 + QUE_LOW_STAT0;
+ val = *(qmgr->addr + IX_QMGR_QCFG_BASE + queue->id);
+ lstat = (*(qmgr->addr + offs) >> ((queue->id % 8)*4)) & 0x0f;
+
+ printk("Qid[%02d]: Wptr=%4x, Rptr=%4x, diff=%4x, Stat:%x\n", queue->id,
+ val&0x7f, (val>>7) &0x7f, (val - (val >> 7)) & 0x7f, lstat);
+}
+
+#endif
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