diff options
Diffstat (limited to 'target/linux/ixp4xx/patches-2.6.23/200-npe_driver.patch')
| -rw-r--r-- | target/linux/ixp4xx/patches-2.6.23/200-npe_driver.patch | 4044 |
1 files changed, 0 insertions, 4044 deletions
diff --git a/target/linux/ixp4xx/patches-2.6.23/200-npe_driver.patch b/target/linux/ixp4xx/patches-2.6.23/200-npe_driver.patch deleted file mode 100644 index 6e9aaa97a3..0000000000 --- a/target/linux/ixp4xx/patches-2.6.23/200-npe_driver.patch +++ /dev/null @@ -1,4044 +0,0 @@ -Index: linux-2.6.23.17/arch/arm/kernel/setup.c -=================================================================== ---- linux-2.6.23.17.orig/arch/arm/kernel/setup.c -+++ linux-2.6.23.17/arch/arm/kernel/setup.c -@@ -62,6 +62,7 @@ extern int root_mountflags; - extern void _stext, _text, _etext, __data_start, _edata, _end; - - unsigned int processor_id; -+EXPORT_SYMBOL(processor_id); - unsigned int __machine_arch_type; - EXPORT_SYMBOL(__machine_arch_type); - -Index: linux-2.6.23.17/arch/arm/mach-ixp4xx/Kconfig -=================================================================== ---- linux-2.6.23.17.orig/arch/arm/mach-ixp4xx/Kconfig -+++ linux-2.6.23.17/arch/arm/mach-ixp4xx/Kconfig -@@ -246,6 +246,20 @@ config IXP4XX_INDIRECT_PCI - need to use the indirect method instead. If you don't know - what you need, leave this option unselected. - -+config IXP4XX_QMGR -+ tristate "IXP4xx Queue Manager support" -+ help -+ This driver supports IXP4xx built-in hardware queue manager -+ and is automatically selected by Ethernet and HSS drivers. -+ -+config IXP4XX_NPE -+ tristate "IXP4xx Network Processor Engine support" -+ select HOTPLUG -+ select FW_LOADER -+ help -+ This driver supports IXP4xx built-in network coprocessors -+ and is automatically selected by Ethernet and HSS drivers. -+ - endmenu - - endif -Index: linux-2.6.23.17/arch/arm/mach-ixp4xx/Makefile -=================================================================== ---- linux-2.6.23.17.orig/arch/arm/mach-ixp4xx/Makefile -+++ linux-2.6.23.17/arch/arm/mach-ixp4xx/Makefile -@@ -44,3 +44,5 @@ obj-$(CONFIG_MACH_SIDEWINDER) += sidewin - obj-$(CONFIG_MACH_AP1000) += ap1000-setup.o - - obj-$(CONFIG_PCI) += $(obj-pci-$(CONFIG_PCI)) common-pci.o -+obj-$(CONFIG_IXP4XX_QMGR) += ixp4xx_qmgr.o -+obj-$(CONFIG_IXP4XX_NPE) += ixp4xx_npe.o -Index: linux-2.6.23.17/arch/arm/mach-ixp4xx/ixdp425-setup.c -=================================================================== ---- linux-2.6.23.17.orig/arch/arm/mach-ixp4xx/ixdp425-setup.c -+++ linux-2.6.23.17/arch/arm/mach-ixp4xx/ixdp425-setup.c -@@ -177,6 +177,31 @@ static struct platform_device ixdp425_ua - .resource = ixdp425_uart_resources - }; - -+/* Built-in 10/100 Ethernet MAC interfaces */ -+static struct eth_plat_info ixdp425_plat_eth[] = { -+ { -+ .phy = 0, -+ .rxq = 3, -+ .txreadyq = 20, -+ }, { -+ .phy = 1, -+ .rxq = 4, -+ .txreadyq = 21, -+ } -+}; -+ -+static struct platform_device ixdp425_eth[] = { -+ { -+ .name = "ixp4xx_eth", -+ .id = IXP4XX_ETH_NPEB, -+ .dev.platform_data = ixdp425_plat_eth, -+ }, { -+ .name = "ixp4xx_eth", -+ .id = IXP4XX_ETH_NPEC, -+ .dev.platform_data = ixdp425_plat_eth + 1, -+ } -+}; -+ - static struct platform_device *ixdp425_devices[] __initdata = { - &ixdp425_i2c_gpio, - &ixdp425_flash, -@@ -184,7 +209,9 @@ static struct platform_device *ixdp425_d - defined(CONFIG_MTD_NAND_PLATFORM_MODULE) - &ixdp425_flash_nand, - #endif -- &ixdp425_uart -+ &ixdp425_uart, -+ &ixdp425_eth[0], -+ &ixdp425_eth[1], - }; - - static void __init ixdp425_init(void) -Index: linux-2.6.23.17/arch/arm/mach-ixp4xx/ixp4xx_npe.c -=================================================================== ---- /dev/null -+++ linux-2.6.23.17/arch/arm/mach-ixp4xx/ixp4xx_npe.c -@@ -0,0 +1,741 @@ -+/* -+ * Intel IXP4xx Network Processor Engine driver for Linux -+ * -+ * Copyright (C) 2007 Krzysztof Halasa <khc@pm.waw.pl> -+ * -+ * This program is free software; you can redistribute it and/or modify it -+ * under the terms of version 2 of the GNU General Public License -+ * as published by the Free Software Foundation. -+ * -+ * The code is based on publicly available information: -+ * - Intel IXP4xx Developer's Manual and other e-papers -+ * - Intel IXP400 Access Library Software (BSD license) -+ * - previous works by Christian Hohnstaedt <chohnstaedt@innominate.com> -+ * Thanks, Christian. -+ */ -+ -+#include <linux/delay.h> -+#include <linux/dma-mapping.h> -+#include <linux/firmware.h> -+#include <linux/io.h> -+#include <linux/kernel.h> -+#include <linux/module.h> -+#include <linux/slab.h> -+#include <asm/arch/npe.h> -+ -+#define DEBUG_MSG 0 -+#define DEBUG_FW 0 -+ -+#define NPE_COUNT 3 -+#define MAX_RETRIES 1000 /* microseconds */ -+#define NPE_42X_DATA_SIZE 0x800 /* in dwords */ -+#define NPE_46X_DATA_SIZE 0x1000 -+#define NPE_A_42X_INSTR_SIZE 0x1000 -+#define NPE_B_AND_C_42X_INSTR_SIZE 0x800 -+#define NPE_46X_INSTR_SIZE 0x1000 -+#define REGS_SIZE 0x1000 -+ -+#define NPE_PHYS_REG 32 -+ -+#define FW_MAGIC 0xFEEDF00D -+#define FW_BLOCK_TYPE_INSTR 0x0 -+#define FW_BLOCK_TYPE_DATA 0x1 -+#define FW_BLOCK_TYPE_EOF 0xF -+ -+/* NPE exec status (read) and command (write) */ -+#define CMD_NPE_STEP 0x01 -+#define CMD_NPE_START 0x02 -+#define CMD_NPE_STOP 0x03 -+#define CMD_NPE_CLR_PIPE 0x04 -+#define CMD_CLR_PROFILE_CNT 0x0C -+#define CMD_RD_INS_MEM 0x10 /* instruction memory */ -+#define CMD_WR_INS_MEM 0x11 -+#define CMD_RD_DATA_MEM 0x12 /* data memory */ -+#define CMD_WR_DATA_MEM 0x13 -+#define CMD_RD_ECS_REG 0x14 /* exec access register */ -+#define CMD_WR_ECS_REG 0x15 -+ -+#define STAT_RUN 0x80000000 -+#define STAT_STOP 0x40000000 -+#define STAT_CLEAR 0x20000000 -+#define STAT_ECS_K 0x00800000 /* pipeline clean */ -+ -+#define NPE_STEVT 0x1B -+#define NPE_STARTPC 0x1C -+#define NPE_REGMAP 0x1E -+#define NPE_CINDEX 0x1F -+ -+#define INSTR_WR_REG_SHORT 0x0000C000 -+#define INSTR_WR_REG_BYTE 0x00004000 -+#define INSTR_RD_FIFO 0x0F888220 -+#define INSTR_RESET_MBOX 0x0FAC8210 -+ -+#define ECS_BG_CTXT_REG_0 0x00 /* Background Executing Context */ -+#define ECS_BG_CTXT_REG_1 0x01 /* Stack level */ -+#define ECS_BG_CTXT_REG_2 0x02 -+#define ECS_PRI_1_CTXT_REG_0 0x04 /* Priority 1 Executing Context */ -+#define ECS_PRI_1_CTXT_REG_1 0x05 /* Stack level */ -+#define ECS_PRI_1_CTXT_REG_2 0x06 -+#define ECS_PRI_2_CTXT_REG_0 0x08 /* Priority 2 Executing Context */ -+#define ECS_PRI_2_CTXT_REG_1 0x09 /* Stack level */ -+#define ECS_PRI_2_CTXT_REG_2 0x0A -+#define ECS_DBG_CTXT_REG_0 0x0C /* Debug Executing Context */ -+#define ECS_DBG_CTXT_REG_1 0x0D /* Stack level */ -+#define ECS_DBG_CTXT_REG_2 0x0E -+#define ECS_INSTRUCT_REG 0x11 /* NPE Instruction Register */ -+ -+#define ECS_REG_0_ACTIVE 0x80000000 /* all levels */ -+#define ECS_REG_0_NEXTPC_MASK 0x1FFF0000 /* BG/PRI1/PRI2 levels */ -+#define ECS_REG_0_LDUR_BITS 8 -+#define ECS_REG_0_LDUR_MASK 0x00000700 /* all levels */ -+#define ECS_REG_1_CCTXT_BITS 16 -+#define ECS_REG_1_CCTXT_MASK 0x000F0000 /* all levels */ -+#define ECS_REG_1_SELCTXT_BITS 0 -+#define ECS_REG_1_SELCTXT_MASK 0x0000000F /* all levels */ -+#define ECS_DBG_REG_2_IF 0x00100000 /* debug level */ -+#define ECS_DBG_REG_2_IE 0x00080000 /* debug level */ -+ -+/* NPE watchpoint_fifo register bit */ -+#define WFIFO_VALID 0x80000000 -+ -+/* NPE messaging_status register bit definitions */ -+#define MSGSTAT_OFNE 0x00010000 /* OutFifoNotEmpty */ -+#define MSGSTAT_IFNF 0x00020000 /* InFifoNotFull */ -+#define MSGSTAT_OFNF 0x00040000 /* OutFifoNotFull */ -+#define MSGSTAT_IFNE 0x00080000 /* InFifoNotEmpty */ -+#define MSGSTAT_MBINT 0x00100000 /* Mailbox interrupt */ -+#define MSGSTAT_IFINT 0x00200000 /* InFifo interrupt */ -+#define MSGSTAT_OFINT 0x00400000 /* OutFifo interrupt */ -+#define MSGSTAT_WFINT 0x00800000 /* WatchFifo interrupt */ -+ -+/* NPE messaging_control register bit definitions */ -+#define MSGCTL_OUT_FIFO 0x00010000 /* enable output FIFO */ -+#define MSGCTL_IN_FIFO 0x00020000 /* enable input FIFO */ -+#define MSGCTL_OUT_FIFO_WRITE 0x01000000 /* enable FIFO + WRITE */ -+#define MSGCTL_IN_FIFO_WRITE 0x02000000 -+ -+/* NPE mailbox_status value for reset */ -+#define RESET_MBOX_STAT 0x0000F0F0 -+ -+const char *npe_names[] = { "NPE-A", "NPE-B", "NPE-C" }; -+ -+#define print_npe(pri, npe, fmt, ...) \ -+ printk(pri "%s: " fmt, npe_name(npe), ## __VA_ARGS__) -+ -+#if DEBUG_MSG -+#define debug_msg(npe, fmt, ...) \ -+ print_npe(KERN_DEBUG, npe, fmt, ## __VA_ARGS__) -+#else -+#define debug_msg(npe, fmt, ...) -+#endif -+ -+static struct { -+ u32 reg, val; -+} ecs_reset[] = { -+ { ECS_BG_CTXT_REG_0, 0xA0000000 }, -+ { ECS_BG_CTXT_REG_1, 0x01000000 }, -+ { ECS_BG_CTXT_REG_2, 0x00008000 }, -+ { ECS_PRI_1_CTXT_REG_0, 0x20000080 }, -+ { ECS_PRI_1_CTXT_REG_1, 0x01000000 }, -+ { ECS_PRI_1_CTXT_REG_2, 0x00008000 }, -+ { ECS_PRI_2_CTXT_REG_0, 0x20000080 }, -+ { ECS_PRI_2_CTXT_REG_1, 0x01000000 }, -+ { ECS_PRI_2_CTXT_REG_2, 0x00008000 }, -+ { ECS_DBG_CTXT_REG_0, 0x20000000 }, -+ { ECS_DBG_CTXT_REG_1, 0x00000000 }, -+ { ECS_DBG_CTXT_REG_2, 0x001E0000 }, -+ { ECS_INSTRUCT_REG, 0x1003C00F }, -+}; -+ -+static struct npe npe_tab[NPE_COUNT] = { -+ { -+ .id = 0, -+ .regs = (struct npe_regs __iomem *)IXP4XX_NPEA_BASE_VIRT, -+ .regs_phys = IXP4XX_NPEA_BASE_PHYS, -+ }, { -+ .id = 1, -+ .regs = (struct npe_regs __iomem *)IXP4XX_NPEB_BASE_VIRT, -+ .regs_phys = IXP4XX_NPEB_BASE_PHYS, -+ }, { -+ .id = 2, -+ .regs = (struct npe_regs __iomem *)IXP4XX_NPEC_BASE_VIRT, -+ .regs_phys = IXP4XX_NPEC_BASE_PHYS, -+ } -+}; -+ -+int npe_running(struct npe *npe) -+{ -+ return (__raw_readl(&npe->regs->exec_status_cmd) & STAT_RUN) != 0; -+} -+ -+static void npe_cmd_write(struct npe *npe, u32 addr, int cmd, u32 data) -+{ -+ __raw_writel(data, &npe->regs->exec_data); -+ __raw_writel(addr, &npe->regs->exec_addr); -+ __raw_writel(cmd, &npe->regs->exec_status_cmd); -+} -+ -+static u32 npe_cmd_read(struct npe *npe, u32 addr, int cmd) -+{ -+ __raw_writel(addr, &npe->regs->exec_addr); -+ __raw_writel(cmd, &npe->regs->exec_status_cmd); -+ /* Iintroduce extra read cycles after issuing read command to NPE -+ so that we read the register after the NPE has updated it. -+ This is to overcome race condition between XScale and NPE */ -+ __raw_readl(&npe->regs->exec_data); -+ __raw_readl(&npe->regs->exec_data); -+ return __raw_readl(&npe->regs->exec_data); -+} -+ -+static void npe_clear_active(struct npe *npe, u32 reg) -+{ -+ u32 val = npe_cmd_read(npe, reg, CMD_RD_ECS_REG); -+ npe_cmd_write(npe, reg, CMD_WR_ECS_REG, val & ~ECS_REG_0_ACTIVE); -+} -+ -+static void npe_start(struct npe *npe) -+{ -+ /* ensure only Background Context Stack Level is active */ -+ npe_clear_active(npe, ECS_PRI_1_CTXT_REG_0); -+ npe_clear_active(npe, ECS_PRI_2_CTXT_REG_0); -+ npe_clear_active(npe, ECS_DBG_CTXT_REG_0); -+ -+ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); -+ __raw_writel(CMD_NPE_START, &npe->regs->exec_status_cmd); -+} -+ -+static void npe_stop(struct npe *npe) -+{ -+ __raw_writel(CMD_NPE_STOP, &npe->regs->exec_status_cmd); -+ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); /*FIXME?*/ -+} -+ -+static int __must_check npe_debug_instr(struct npe *npe, u32 instr, u32 ctx, -+ u32 ldur) -+{ -+ u32 wc; -+ int i; -+ -+ /* set the Active bit, and the LDUR, in the debug level */ -+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_0, CMD_WR_ECS_REG, -+ ECS_REG_0_ACTIVE | (ldur << ECS_REG_0_LDUR_BITS)); -+ -+ /* set CCTXT at ECS DEBUG L3 to specify in which context to execute -+ the instruction, and set SELCTXT at ECS DEBUG Level to specify -+ which context store to access. -+ Debug ECS Level Reg 1 has form 0x000n000n, where n = context number -+ */ -+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_1, CMD_WR_ECS_REG, -+ (ctx << ECS_REG_1_CCTXT_BITS) | -+ (ctx << ECS_REG_1_SELCTXT_BITS)); -+ -+ /* clear the pipeline */ -+ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); -+ -+ /* load NPE instruction into the instruction register */ -+ npe_cmd_write(npe, ECS_INSTRUCT_REG, CMD_WR_ECS_REG, instr); -+ -+ /* we need this value later to wait for completion of NPE execution -+ step */ -+ wc = __raw_readl(&npe->regs->watch_count); -+ -+ /* issue a Step One command via the Execution Control register */ -+ __raw_writel(CMD_NPE_STEP, &npe->regs->exec_status_cmd); -+ -+ /* Watch Count register increments when NPE completes an instruction */ -+ for (i = 0; i < MAX_RETRIES; i++) { -+ if (wc != __raw_readl(&npe->regs->watch_count)) -+ return 0; -+ udelay(1); -+ } -+ -+ print_npe(KERN_ERR, npe, "reset: npe_debug_instr(): timeout\n"); -+ return -ETIMEDOUT; -+} -+ -+static int __must_check npe_logical_reg_write8(struct npe *npe, u32 addr, -+ u8 val, u32 ctx) -+{ -+ /* here we build the NPE assembler instruction: mov8 d0, #0 */ -+ u32 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. */ -+ return npe_debug_instr(npe, instr, ctx, 1); /* execute it */ -+} -+ -+static int __must_check npe_logical_reg_write16(struct npe *npe, u32 addr, -+ u16 val, u32 ctx) -+{ -+ /* here we build the NPE assembler instruction: mov16 d0, #0 */ -+ u32 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. */ -+ return npe_debug_instr(npe, instr, ctx, 1); /* execute it */ -+} -+ -+static int __must_check npe_logical_reg_write32(struct npe *npe, u32 addr, -+ u32 val, u32 ctx) -+{ -+ /* write in 16 bit steps first the high and then the low value */ -+ if (npe_logical_reg_write16(npe, addr, val >> 16, ctx)) -+ return -ETIMEDOUT; -+ return npe_logical_reg_write16(npe, addr + 2, val & 0xFFFF, ctx); -+} -+ -+static int npe_reset(struct npe *npe) -+{ -+ u32 val, ctl, exec_count, ctx_reg2; -+ int i; -+ -+ ctl = (__raw_readl(&npe->regs->messaging_control) | 0x3F000000) & -+ 0x3F3FFFFF; -+ -+ /* disable parity interrupt */ -+ __raw_writel(ctl & 0x3F00FFFF, &npe->regs->messaging_control); -+ -+ /* pre exec - debug instruction */ -+ /* turn off the halt bit by clearing Execution Count register. */ -+ exec_count = __raw_readl(&npe->regs->exec_count); -+ __raw_writel(0, &npe->regs->exec_count); -+ /* ensure that IF and IE are on (temporarily), so that we don't end up -+ stepping forever */ -+ ctx_reg2 = npe_cmd_read(npe, ECS_DBG_CTXT_REG_2, CMD_RD_ECS_REG); -+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_2, CMD_WR_ECS_REG, ctx_reg2 | -+ ECS_DBG_REG_2_IF | ECS_DBG_REG_2_IE); -+ -+ /* clear the FIFOs */ -+ while (__raw_readl(&npe->regs->watchpoint_fifo) & WFIFO_VALID) -+ ; -+ while (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_OFNE) -+ /* read from the outFIFO until empty */ -+ print_npe(KERN_DEBUG, npe, "npe_reset: read FIFO = 0x%X\n", -+ __raw_readl(&npe->regs->in_out_fifo)); -+ -+ while (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE) -+ /* step execution of the NPE intruction to read inFIFO using -+ the Debug Executing Context stack */ -+ if (npe_debug_instr(npe, INSTR_RD_FIFO, 0, 0)) -+ return -ETIMEDOUT; -+ -+ /* reset the mailbox reg from the XScale side */ -+ __raw_writel(RESET_MBOX_STAT, &npe->regs->mailbox_status); -+ /* from NPE side */ -+ if (npe_debug_instr(npe, INSTR_RESET_MBOX, 0, 0)) -+ return -ETIMEDOUT; -+ -+ /* Reset the physical registers in the NPE register file */ -+ for (val = 0; val < NPE_PHYS_REG; val++) { -+ if (npe_logical_reg_write16(npe, NPE_REGMAP, val >> 1, 0)) -+ return -ETIMEDOUT; -+ /* address is either 0 or 4 */ -+ if (npe_logical_reg_write32(npe, (val & 1) * 4, 0, 0)) -+ return -ETIMEDOUT; -+ } -+ -+ /* Reset the context store = each context's Context Store registers */ -+ -+ /* Context 0 has no STARTPC. Instead, this value is used to set NextPC -+ for Background ECS, to set where NPE starts executing code */ -+ val = npe_cmd_read(npe, ECS_BG_CTXT_REG_0, CMD_RD_ECS_REG); -+ val &= ~ECS_REG_0_NEXTPC_MASK; -+ val |= (0 /* NextPC */ << 16) & ECS_REG_0_NEXTPC_MASK; -+ npe_cmd_write(npe, ECS_BG_CTXT_REG_0, CMD_WR_ECS_REG, val); -+ -+ for (i = 0; i < 16; i++) { -+ if (i) { /* Context 0 has no STEVT nor STARTPC */ -+ /* STEVT = off, 0x80 */ -+ if (npe_logical_reg_write8(npe, NPE_STEVT, 0x80, i)) -+ return -ETIMEDOUT; -+ if (npe_logical_reg_write16(npe, NPE_STARTPC, 0, i)) -+ return -ETIMEDOUT; -+ } -+ /* REGMAP = d0->p0, d8->p2, d16->p4 */ -+ if (npe_logical_reg_write16(npe, NPE_REGMAP, 0x820, i)) -+ return -ETIMEDOUT; -+ if (npe_logical_reg_write8(npe, NPE_CINDEX, 0, i)) -+ return -ETIMEDOUT; -+ } -+ -+ /* post exec */ -+ /* clear active bit in debug level */ -+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_0, CMD_WR_ECS_REG, 0); -+ /* clear the pipeline */ -+ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); -+ /* restore previous values */ -+ __raw_writel(exec_count, &npe->regs->exec_count); -+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_2, CMD_WR_ECS_REG, ctx_reg2); -+ -+ /* write reset values to Execution Context Stack registers */ -+ for (val = 0; val < ARRAY_SIZE(ecs_reset); val++) -+ npe_cmd_write(npe, ecs_reset[val].reg, CMD_WR_ECS_REG, -+ ecs_reset[val].val); -+ -+ /* clear the profile counter */ -+ __raw_writel(CMD_CLR_PROFILE_CNT, &npe->regs->exec_status_cmd); -+ -+ __raw_writel(0, &npe->regs->exec_count); -+ __raw_writel(0, &npe->regs->action_points[0]); -+ __raw_writel(0, &npe->regs->action_points[1]); -+ __raw_writel(0, &npe->regs->action_points[2]); -+ __raw_writel(0, &npe->regs->action_points[3]); -+ __raw_writel(0, &npe->regs->watch_count); -+ -+ val = ixp4xx_read_feature_bits(); -+ /* reset the NPE */ -+ ixp4xx_write_feature_bits(val & -+ ~(IXP4XX_FEATURE_RESET_NPEA << npe->id)); -+ for (i = 0; i < MAX_RETRIES; i++) { -+ if (!(ixp4xx_read_feature_bits() & -+ (IXP4XX_FEATURE_RESET_NPEA << npe->id))) -+ break; /* reset completed */ -+ udelay(1); -+ } -+ if (i == MAX_RETRIES) -+ return -ETIMEDOUT; -+ -+ /* deassert reset */ -+ ixp4xx_write_feature_bits(val | -+ (IXP4XX_FEATURE_RESET_NPEA << npe->id)); -+ for (i = 0; i < MAX_RETRIES; i++) { -+ if (ixp4xx_read_feature_bits() & -+ (IXP4XX_FEATURE_RESET_NPEA << npe->id)) -+ break; /* NPE is back alive */ -+ udelay(1); -+ } -+ if (i == MAX_RETRIES) -+ return -ETIMEDOUT; -+ -+ npe_stop(npe); -+ -+ /* restore NPE configuration bus Control Register - parity settings */ -+ __raw_writel(ctl, &npe->regs->messaging_control); -+ return 0; -+} -+ -+ -+int npe_send_message(struct npe *npe, const void *msg, const char *what) -+{ -+ const u32 *send = msg; -+ int cycles = 0; -+ -+ debug_msg(npe, "Trying to send message %s [%08X:%08X]\n", -+ what, send[0], send[1]); -+ -+ if (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE) { -+ debug_msg(npe, "NPE input FIFO not empty\n"); -+ return -EIO; -+ } -+ -+ __raw_writel(send[0], &npe->regs->in_out_fifo); -+ -+ if (!(__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNF)) { -+ debug_msg(npe, "NPE input FIFO full\n"); -+ return -EIO; -+ } -+ -+ __raw_writel(send[1], &npe->regs->in_out_fifo); -+ -+ while ((cycles < MAX_RETRIES) && -+ (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE)) { -+ udelay(1); -+ cycles++; -+ } -+ -+ if (cycles == MAX_RETRIES) { -+ debug_msg(npe, "Timeout sending message\n"); -+ return -ETIMEDOUT; -+ } -+ -+ debug_msg(npe, "Sending a message took %i cycles\n", cycles); -+ return 0; -+} -+ -+int npe_recv_message(struct npe *npe, void *msg, const char *what) -+{ -+ u32 *recv = msg; -+ int cycles = 0, cnt = 0; -+ -+ debug_msg(npe, "Trying to receive message %s\n", what); -+ -+ while (cycles < MAX_RETRIES) { -+ if (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_OFNE) { -+ recv[cnt++] = __raw_readl(&npe->regs->in_out_fifo); -+ if (cnt == 2) -+ break; -+ } else { -+ udelay(1); -+ cycles++; -+ } -+ } -+ -+ switch(cnt) { -+ case 1: -+ debug_msg(npe, "Received [%08X]\n", recv[0]); -+ break; -+ case 2: -+ debug_msg(npe, "Received [%08X:%08X]\n", recv[0], recv[1]); -+ break; -+ } -+ -+ if (cycles == MAX_RETRIES) { -+ debug_msg(npe, "Timeout waiting for message\n"); -+ return -ETIMEDOUT; -+ } -+ -+ debug_msg(npe, "Receiving a message took %i cycles\n", cycles); -+ return 0; -+} -+ -+int npe_send_recv_message(struct npe *npe, void *msg, const char *what) -+{ -+ int result; -+ u32 *send = msg, recv[2]; -+ -+ if ((result = npe_send_message(npe, msg, what)) != 0) -+ return result; -+ if ((result = npe_recv_message(npe, recv, what)) != 0) -+ return result; -+ -+ if ((recv[0] != send[0]) || (recv[1] != send[1])) { -+ debug_msg(npe, "Message %s: unexpected message received\n", -+ what); -+ return -EIO; -+ } -+ return 0; -+} -+ -+ -+int npe_load_firmware(struct npe *npe, const char *name, struct device *dev) -+{ -+ const struct firmware *fw_entry; -+ -+ struct dl_block { -+ u32 type; -+ u32 offset; -+ } *blk; -+ -+ struct dl_image { -+ u32 magic; -+ u32 id; -+ u32 size; -+ union { -+ u32 data[0]; -+ struct dl_block blocks[0]; -+ }; -+ } *image; -+ -+ struct dl_codeblock { -+ u32 npe_addr; -+ u32 size; -+ u32 data[0]; -+ } *cb; -+ -+ int i, j, err, data_size, instr_size, blocks, table_end; -+ u32 cmd; -+ -+ if ((err = request_firmware(&fw_entry, name, dev)) != 0) -+ return err; -+ -+ err = -EINVAL; -+ if (fw_entry->size < sizeof(struct dl_image)) { -+ print_npe(KERN_ERR, npe, "incomplete firmware file\n"); -+ goto err; -+ } -+ image = (struct dl_image*)fw_entry->data; -+ -+#if DEBUG_FW -+ print_npe(KERN_DEBUG, npe, "firmware: %08X %08X %08X (0x%X bytes)\n", -+ image->magic, image->id, image->size, image->size * 4); -+#endif -+ -+ if (image->magic == swab32(FW_MAGIC)) { /* swapped file */ -+ image->id = swab32(image->id); -+ image->size = swab32(image->size); -+ } else if (image->magic != FW_MAGIC) { -+ print_npe(KERN_ERR, npe, "bad firmware file magic: 0x%X\n", -+ image->magic); -+ goto err; -+ } -+ if ((image->size * 4 + sizeof(struct dl_image)) != fw_entry->size) { -+ print_npe(KERN_ERR, npe, -+ "inconsistent size of firmware file\n"); -+ goto err; -+ } -+ if (((image->id >> 24) & 0xF /* NPE ID */) != npe->id) { -+ print_npe(KERN_ERR, npe, "firmware file NPE ID mismatch\n"); -+ goto err; -+ } -+ if (image->magic == swab32(FW_MAGIC)) -+ for (i = 0; i < image->size; i++) -+ image->data[i] = swab32(image->data[i]); -+ -+ if (!cpu_is_ixp46x() && ((image->id >> 28) & 0xF /* device ID */)) { -+ print_npe(KERN_INFO, npe, "IXP46x firmware ignored on " -+ "IXP42x\n"); -+ goto err; -+ } -+ -+ if (npe_running(npe)) { -+ print_npe(KERN_INFO, npe, "unable to load firmware, NPE is " -+ "already running\n"); -+ err = -EBUSY; -+ goto err; -+ } -+#if 0 -+ npe_stop(npe); -+ npe_reset(npe); -+#endif -+ -+ print_npe(KERN_INFO, npe, "firmware functionality 0x%X, " -+ "revision 0x%X:%X\n", (image->id >> 16) & 0xFF, -+ (image->id >> 8) & 0xFF, image->id & 0xFF); -+ -+ if (!cpu_is_ixp46x()) { -+ if (!npe->id) -+ instr_size = NPE_A_42X_INSTR_SIZE; -+ else -+ instr_size = NPE_B_AND_C_42X_INSTR_SIZE; -+ data_size = NPE_42X_DATA_SIZE; -+ } else { -+ instr_size = NPE_46X_INSTR_SIZE; -+ data_size = NPE_46X_DATA_SIZE; -+ } -+ -+ for (blocks = 0; blocks * sizeof(struct dl_block) / 4 < image->size; -+ blocks++) -+ if (image->blocks[blocks].type == FW_BLOCK_TYPE_EOF) -+ break; -+ if (blocks * sizeof(struct dl_block) / 4 >= image->size) { -+ print_npe(KERN_INFO, npe, "firmware EOF block marker not " -+ "found\n"); -+ goto err; -+ } -+ -+#if DEBUG_FW -+ print_npe(KERN_DEBUG, npe, "%i firmware blocks found\n", blocks); -+#endif -+ -+ table_end = blocks * sizeof(struct dl_block) / 4 + 1 /* EOF marker */; -+ for (i = 0, blk = image->blocks; i < blocks; i++, blk++) { -+ if (blk->offset > image->size - sizeof(struct dl_codeblock) / 4 -+ || blk->offset < table_end) { -+ print_npe(KERN_INFO, npe, "invalid offset 0x%X of " -+ "firmware block #%i\n", blk->offset, i); -+ goto err; -+ } -+ -+ cb = (struct dl_codeblock*)&image->data[blk->offset]; -+ if (blk->type == FW_BLOCK_TYPE_INSTR) { -+ if (cb->npe_addr + cb->size > instr_size) -+ goto too_big; -+ cmd = CMD_WR_INS_MEM; -+ } else if (blk->type == FW_BLOCK_TYPE_DATA) { -+ if (cb->npe_addr + cb->size > data_size) -+ goto too_big; -+ cmd = CMD_WR_DATA_MEM; -+ } else { -+ print_npe(KERN_INFO, npe, "invalid firmware block #%i " -+ "type 0x%X\n", i, blk->type); -+ goto err; -+ } -+ if (blk->offset + sizeof(*cb) / 4 + cb->size > image->size) { -+ print_npe(KERN_INFO, npe, "firmware block #%i doesn't " -+ "fit in firmware image: type %c, start 0x%X," -+ " length 0x%X\n", i, -+ blk->type == FW_BLOCK_TYPE_INSTR ? 'I' : 'D', -+ cb->npe_addr, cb->size); -+ goto err; -+ } -+ -+ for (j = 0; j < cb->size; j++) -+ npe_cmd_write(npe, cb->npe_addr + j, cmd, cb->data[j]); -+ } -+ -+ npe_start(npe); -+ if (!npe_running(npe)) -+ print_npe(KERN_ERR, npe, "unable to start\n"); -+ release_firmware(fw_entry); -+ return 0; -+ -+too_big: -+ print_npe(KERN_INFO, npe, "firmware block #%i doesn't fit in NPE " -+ "memory: type %c, start 0x%X, length 0x%X\n", i, -+ blk->type == FW_BLOCK_TYPE_INSTR ? 'I' : 'D', -+ cb->npe_addr, cb->size); -+err: -+ release_firmware(fw_entry); -+ return err; -+} -+ -+ -+struct npe *npe_request(int id) -+{ -+ if (id < NPE_COUNT) -+ if (npe_tab[id].valid) -+ if (try_module_get(THIS_MODULE)) -+ return &npe_tab[id]; -+ return NULL; -+} -+ -+void npe_release(struct npe *npe) -+{ -+ module_put(THIS_MODULE); -+} -+ -+ -+static int __init npe_init_module(void) -+{ -+ -+ int i, found = 0; -+ -+ for (i = 0; i < NPE_COUNT; i++) { -+ struct npe *npe = &npe_tab[i]; -+ if (!(ixp4xx_read_feature_bits() & -+ (IXP4XX_FEATURE_RESET_NPEA << i))) -+ continue; /* NPE already disabled or not present */ -+ if (!(npe->mem_res = request_mem_region(npe->regs_phys, -+ REGS_SIZE, -+ npe_name(npe)))) { -+ print_npe(KERN_ERR, npe, -+ "failed to request memory region\n"); -+ continue; -+ } -+ -+ if (npe_reset(npe)) -+ continue; -+ npe->valid = 1; -+ found++; -+ } -+ -+ if (!found) -+ return -ENOSYS; -+ return 0; -+} -+ -+static void __exit npe_cleanup_module(void) -+{ -+ int i; -+ -+ for (i = 0; i < NPE_COUNT; i++) -+ if (npe_tab[i].mem_res) { -+ npe_reset(&npe_tab[i]); -+ release_resource(npe_tab[i].mem_res); -+ } -+} -+ -+module_init(npe_init_module); -+module_exit(npe_cleanup_module); -+ -+MODULE_AUTHOR("Krzysztof Halasa"); -+MODULE_LICENSE("GPL v2"); -+ -+EXPORT_SYMBOL(npe_names); -+EXPORT_SYMBOL(npe_running); -+EXPORT_SYMBOL(npe_request); -+EXPORT_SYMBOL(npe_release); -+EXPORT_SYMBOL(npe_load_firmware); -+EXPORT_SYMBOL(npe_send_message); -+EXPORT_SYMBOL(npe_recv_message); -+EXPORT_SYMBOL(npe_send_recv_message); -Index: linux-2.6.23.17/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c -=================================================================== ---- /dev/null -+++ linux-2.6.23.17/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c -@@ -0,0 +1,274 @@ -+/* -+ * Intel IXP4xx Queue Manager driver for Linux -+ * -+ * Copyright (C) 2007 Krzysztof Halasa <khc@pm.waw.pl> -+ * -+ * This program is free software; you can redistribute it and/or modify it -+ * under the terms of version 2 of the GNU General Public License -+ * as published by the Free Software Foundation. -+ */ -+ -+#include <linux/ioport.h> -+#include <linux/interrupt.h> -+#include <linux/kernel.h> -+#include <linux/module.h> -+#include <asm/arch/qmgr.h> -+ -+#define DEBUG 0 -+ -+struct qmgr_regs __iomem *qmgr_regs; -+static struct resource *mem_res; -+static spinlock_t qmgr_lock; -+static u32 used_sram_bitmap[4]; /* 128 16-dword pages */ -+static void (*irq_handlers[HALF_QUEUES])(void *pdev); -+static void *irq_pdevs[HALF_QUEUES]; -+ -+void qmgr_set_irq(unsigned int queue, int src, -+ void (*handler)(void *pdev), void *pdev) -+{ -+ u32 __iomem *reg = &qmgr_regs->irqsrc[queue / 8]; /* 8 queues / u32 */ -+ int bit = (queue % 8) * 4; /* 3 bits + 1 reserved bit per queue */ -+ unsigned long flags; -+ -+ src &= 7; -+ spin_lock_irqsave(&qmgr_lock, flags); -+ __raw_writel((__raw_readl(reg) & ~(7 << bit)) | (src << bit), reg); -+ irq_handlers[queue] = handler; -+ irq_pdevs[queue] = pdev; -+ spin_unlock_irqrestore(&qmgr_lock, flags); -+} -+ -+ -+static irqreturn_t qmgr_irq1(int irq, void *pdev) -+{ -+ int i; -+ u32 val = __raw_readl(&qmgr_regs->irqstat[0]); -+ __raw_writel(val, &qmgr_regs->irqstat[0]); /* ACK */ -+ -+ for (i = 0; i < HALF_QUEUES; i++) -+ if (val & (1 << i)) -+ irq_handlers[i](irq_pdevs[i]); -+ -+ return val ? IRQ_HANDLED : 0; -+} -+ -+ -+void qmgr_enable_irq(unsigned int queue) -+{ -+ unsigned long flags; -+ -+ spin_lock_irqsave(&qmgr_lock, flags); -+ __raw_writel(__raw_readl(&qmgr_regs->irqen[0]) | (1 << queue), -+ &qmgr_regs->irqen[0]); -+ spin_unlock_irqrestore(&qmgr_lock, flags); -+} -+ -+void qmgr_disable_irq(unsigned int queue) -+{ -+ unsigned long flags; -+ -+ spin_lock_irqsave(&qmgr_lock, flags); -+ __raw_writel(__raw_readl(&qmgr_regs->irqen[0]) & ~(1 << queue), -+ &qmgr_regs->irqen[0]); -+ spin_unlock_irqrestore(&qmgr_lock, flags); -+} -+ -+static inline void shift_mask(u32 *mask) -+{ -+ mask[3] = mask[3] << 1 | mask[2] >> 31; -+ mask[2] = mask[2] << 1 | mask[1] >> 31; -+ mask[1] = mask[1] << 1 | mask[0] >> 31; -+ mask[0] <<= 1; -+} -+ -+int qmgr_request_queue(unsigned int queue, unsigned int len /* dwords */, -+ unsigned int nearly_empty_watermark, -+ unsigned int nearly_full_watermark) -+{ -+ u32 cfg, addr = 0, mask[4]; /* in 16-dwords */ -+ int err; -+ -+ if (queue >= HALF_QUEUES) -+ return -ERANGE; -+ -+ if ((nearly_empty_watermark | nearly_full_watermark) & ~7) -+ return -EINVAL; -+ -+ switch (len) { -+ case 16: -+ cfg = 0 << 24; -+ mask[0] = 0x1; -+ break; -+ case 32: -+ cfg = 1 << 24; -+ mask[0] = 0x3; -+ break; -+ case 64: -+ cfg = 2 << 24; -+ mask[0] = 0xF; -+ break; -+ case 128: -+ cfg = 3 << 24; -+ mask[0] = 0xFF; -+ break; -+ default: -+ return -EINVAL; -+ } -+ -+ cfg |= nearly_empty_watermark << 26; -+ cfg |= nearly_full_watermark << 29; -+ len /= 16; /* in 16-dwords: 1, 2, 4 or 8 */ -+ mask[1] = mask[2] = mask[3] = 0; -+ -+ if (!try_module_get(THIS_MODULE)) -+ return -ENODEV; -+ -+ spin_lock_irq(&qmgr_lock); -+ if (__raw_readl(&qmgr_regs->sram[queue])) { -+ err = -EBUSY; -+ goto err; -+ } -+ -+ while (1) { -+ if (!(used_sram_bitmap[0] & mask[0]) && -+ !(used_sram_bitmap[1] & mask[1]) && -+ !(used_sram_bitmap[2] & mask[2]) && -+ !(used_sram_bitmap[3] & mask[3])) -+ break; /* found free space */ -+ -+ addr++; -+ shift_mask(mask); -+ if (addr + len > ARRAY_SIZE(qmgr_regs->sram)) { -+ printk(KERN_ERR "qmgr: no free SRAM space for" -+ " queue %i\n", queue); -+ err = -ENOMEM; -+ goto err; -+ } -+ } -+ -+ used_sram_bitmap[0] |= mask[0]; -+ used_sram_bitmap[1] |= mask[1]; -+ used_sram_bitmap[2] |= mask[2]; -+ used_sram_bitmap[3] |= mask[3]; -+ __raw_writel(cfg | (addr << 14), &qmgr_regs->sram[queue]); -+ spin_unlock_irq(&qmgr_lock); -+ -+#if DEBUG -+ printk(KERN_DEBUG "qmgr: requested queue %i, addr = 0x%02X\n", -+ queue, addr); -+#endif -+ return 0; -+ -+err: -+ spin_unlock_irq(&qmgr_lock); -+ module_put(THIS_MODULE); -+ return err; -+} -+ -+void qmgr_release_queue(unsigned int queue) -+{ -+ u32 cfg, addr, mask[4]; -+ -+ BUG_ON(queue >= HALF_QUEUES); /* not in valid range */ -+ -+ spin_lock_irq(&qmgr_lock); -+ cfg = __raw_readl(&qmgr_regs->sram[queue]); -+ addr = (cfg >> 14) & 0xFF; -+ -+ BUG_ON(!addr); /* not requested */ -+ -+ switch ((cfg >> 24) & 3) { -+ case 0: mask[0] = 0x1; break; -+ case 1: mask[0] = 0x3; break; -+ case 2: mask[0] = 0xF; break; -+ case 3: mask[0] = 0xFF; break; -+ } -+ -+ while (addr--) -+ shift_mask(mask); -+ -+ __raw_writel(0, &qmgr_regs->sram[queue]); -+ -+ used_sram_bitmap[0] &= ~mask[0]; -+ used_sram_bitmap[1] &= ~mask[1]; -+ used_sram_bitmap[2] &= ~mask[2]; -+ used_sram_bitmap[3] &= ~mask[3]; -+ irq_handlers[queue] = NULL; /* catch IRQ bugs */ -+ spin_unlock_irq(&qmgr_lock); -+ -+ module_put(THIS_MODULE); -+#if DEBUG -+ printk(KERN_DEBUG "qmgr: released queue %i\n", queue); -+#endif -+} -+ -+static int qmgr_init(void) -+{ -+ int i, err; -+ mem_res = request_mem_region(IXP4XX_QMGR_BASE_PHYS, -+ IXP4XX_QMGR_REGION_SIZE, -+ "IXP4xx Queue Manager"); -+ if (mem_res == NULL) -+ return -EBUSY; -+ -+ qmgr_regs = ioremap(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE); -+ if (qmgr_regs == NULL) { -+ err = -ENOMEM; -+ goto error_map; -+ } -+ -+ /* reset qmgr registers */ -+ for (i = 0; i < 4; i++) { -+ __raw_writel(0x33333333, &qmgr_regs->stat1[i]); -+ __raw_writel(0, &qmgr_regs->irqsrc[i]); -+ } -+ for (i = 0; i < 2; i++) { -+ __raw_writel(0, &qmgr_regs->stat2[i]); -+ __raw_writel(0xFFFFFFFF, &qmgr_regs->irqstat[i]); /* clear */ -+ __raw_writel(0, &qmgr_regs->irqen[i]); -+ } -+ -+ for (i = 0; i < QUEUES; i++) -+ __raw_writel(0, &qmgr_regs->sram[i]); -+ -+ err = request_irq(IRQ_IXP4XX_QM1, qmgr_irq1, 0, -+ "IXP4xx Queue Manager", NULL); -+ if (err) { -+ printk(KERN_ERR "qmgr: failed to request IRQ%i\n", -+ IRQ_IXP4XX_QM1); -+ goto error_irq; -+ } -+ -+ used_sram_bitmap[0] = 0xF; /* 4 first pages reserved for config */ -+ spin_lock_init(&qmgr_lock); -+ -+ printk(KERN_INFO "IXP4xx Queue Manager initialized.\n"); -+ return 0; -+ -+error_irq: -+ iounmap(qmgr_regs); -+error_map: -+ release_mem_region(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE); -+ return err; -+} -+ -+static void qmgr_remove(void) -+{ -+ free_irq(IRQ_IXP4XX_QM1, NULL); -+ synchronize_irq(IRQ_IXP4XX_QM1); -+ iounmap(qmgr_regs); -+ release_mem_region(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE); -+} -+ -+module_init(qmgr_init); -+module_exit(qmgr_remove); -+ -+MODULE_LICENSE("GPL v2"); -+MODULE_AUTHOR("Krzysztof Halasa"); -+ -+EXPORT_SYMBOL(qmgr_regs); -+EXPORT_SYMBOL(qmgr_set_irq); -+EXPORT_SYMBOL(qmgr_enable_irq); -+EXPORT_SYMBOL(qmgr_disable_irq); -+EXPORT_SYMBOL(qmgr_request_queue); -+EXPORT_SYMBOL(qmgr_release_queue); -Index: linux-2.6.23.17/drivers/net/arm/Kconfig -=================================================================== ---- linux-2.6.23.17.orig/drivers/net/arm/Kconfig -+++ linux-2.6.23.17/drivers/net/arm/Kconfig -@@ -47,3 +47,13 @@ config EP93XX_ETH - help - This is a driver for the ethernet hardware included in EP93xx CPUs. - Say Y if you are building a kernel for EP93xx based devices. -+ -+config IXP4XX_ETH -+ tristate "IXP4xx Ethernet support" -+ depends on NET_ETHERNET && ARM && ARCH_IXP4XX -+ select IXP4XX_NPE -+ select IXP4XX_QMGR -+ select MII -+ help -+ Say Y here if you want to use built-in Ethernet ports -+ on IXP4xx processor. -Index: linux-2.6.23.17/drivers/net/arm/Makefile -=================================================================== ---- linux-2.6.23.17.orig/drivers/net/arm/Makefile -+++ linux-2.6.23.17/drivers/net/arm/Makefile -@@ -9,3 +9,4 @@ obj-$(CONFIG_ARM_ETHER3) += ether3.o - obj-$(CONFIG_ARM_ETHER1) += ether1.o - obj-$(CONFIG_ARM_AT91_ETHER) += at91_ether.o - obj-$(CONFIG_EP93XX_ETH) += ep93xx_eth.o -+obj-$(CONFIG_IXP4XX_ETH) += ixp4xx_eth.o -Index: linux-2.6.23.17/drivers/net/arm/ixp4xx_eth.c -=================================================================== ---- /dev/null -+++ linux-2.6.23.17/drivers/net/arm/ixp4xx_eth.c -@@ -0,0 +1,1259 @@ -+/* -+ * Intel IXP4xx Ethernet driver for Linux -+ * -+ * Copyright (C) 2007 Krzysztof Halasa <khc@pm.waw.pl> -+ * -+ * This program is free software; you can redistribute it and/or modify it -+ * under the terms of version 2 of the GNU General Public License -+ * as published by the Free Software Foundation. -+ * -+ * Ethernet port config (0x00 is not present on IXP42X): -+ * -+ * logical port 0x00 0x10 0x20 -+ * NPE 0 (NPE-A) 1 (NPE-B) 2 (NPE-C) -+ * physical PortId 2 0 1 -+ * TX queue 23 24 25 -+ * RX-free queue 26 27 28 -+ * TX-done queue is always 31, per-port RX and TX-ready queues are configurable -+ * -+ * -+ * Queue entries: -+ * bits 0 -> 1 - NPE ID (RX and TX-done) -+ * bits 0 -> 2 - priority (TX, per 802.1D) -+ * bits 3 -> 4 - port ID (user-set?) -+ * bits 5 -> 31 - physical descriptor address -+ */ -+ -+#include <linux/delay.h> -+#include <linux/dma-mapping.h> -+#include <linux/dmapool.h> -+#include <linux/etherdevice.h> -+#include <linux/io.h> -+#include <linux/kernel.h> -+#include <linux/mii.h> -+#include <linux/platform_device.h> -+#include <asm/arch/npe.h> -+#include <asm/arch/qmgr.h> -+ -+#define DEBUG_QUEUES 0 -+#define DEBUG_DESC 0 -+#define DEBUG_RX 0 -+#define DEBUG_TX 0 -+#define DEBUG_PKT_BYTES 0 -+#define DEBUG_MDIO 0 -+#define DEBUG_CLOSE 0 -+ -+#define DRV_NAME "ixp4xx_eth" -+ -+#define MAX_NPES 3 -+ -+#define RX_DESCS 64 /* also length of all RX queues */ -+#define TX_DESCS 16 /* also length of all TX queues */ -+#define TXDONE_QUEUE_LEN 64 /* dwords */ -+ -+#define POOL_ALLOC_SIZE (sizeof(struct desc) * (RX_DESCS + TX_DESCS)) -+#define REGS_SIZE 0x1000 -+#define MAX_MRU 1536 /* 0x600 */ -+ -+#define MDIO_INTERVAL (3 * HZ) -+#define MAX_MDIO_RETRIES 100 /* microseconds, typically 30 cycles */ -+#define MAX_MII_RESET_RETRIES 100 /* mdio_read() cycles, typically 4 */ -+#define MAX_CLOSE_WAIT 1000 /* microseconds, typically 2-3 cycles */ -+ -+#define NPE_ID(port_id) ((port_id) >> 4) -+#define PHYSICAL_ID(port_id) ((NPE_ID(port_id) + 2) % 3) -+#define TX_QUEUE(port_id) (NPE_ID(port_id) + 23) -+#define RXFREE_QUEUE(port_id) (NPE_ID(port_id) + 26) -+#define TXDONE_QUEUE 31 -+ -+/* TX Control Registers */ -+#define TX_CNTRL0_TX_EN 0x01 -+#define TX_CNTRL0_HALFDUPLEX 0x02 -+#define TX_CNTRL0_RETRY 0x04 -+#define TX_CNTRL0_PAD_EN 0x08 -+#define TX_CNTRL0_APPEND_FCS 0x10 -+#define TX_CNTRL0_2DEFER 0x20 -+#define TX_CNTRL0_RMII 0x40 /* reduced MII */ -+#define TX_CNTRL1_RETRIES 0x0F /* 4 bits */ -+ -+/* RX Control Registers */ -+#define RX_CNTRL0_RX_EN 0x01 -+#define RX_CNTRL0_PADSTRIP_EN 0x02 -+#define RX_CNTRL0_SEND_FCS 0x04 -+#define RX_CNTRL0_PAUSE_EN 0x08 -+#define RX_CNTRL0_LOOP_EN 0x10 -+#define RX_CNTRL0_ADDR_FLTR_EN 0x20 -+#define RX_CNTRL0_RX_RUNT_EN 0x40 -+#define RX_CNTRL0_BCAST_DIS 0x80 -+#define RX_CNTRL1_DEFER_EN 0x01 -+ -+/* Core Control Register */ -+#define CORE_RESET 0x01 -+#define CORE_RX_FIFO_FLUSH 0x02 -+#define CORE_TX_FIFO_FLUSH 0x04 -+#define CORE_SEND_JAM 0x08 -+#define CORE_MDC_EN 0x10 /* MDIO using NPE-B ETH-0 only */ -+ -+#define DEFAULT_TX_CNTRL0 (TX_CNTRL0_TX_EN | TX_CNTRL0_RETRY | \ -+ TX_CNTRL0_PAD_EN | TX_CNTRL0_APPEND_FCS | \ -+ TX_CNTRL0_2DEFER) -+#define DEFAULT_RX_CNTRL0 RX_CNTRL0_RX_EN -+#define DEFAULT_CORE_CNTRL CORE_MDC_EN -+ -+ -+/* NPE message codes */ -+#define NPE_GETSTATUS 0x00 -+#define NPE_EDB_SETPORTADDRESS 0x01 -+#define NPE_EDB_GETMACADDRESSDATABASE 0x02 -+#define NPE_EDB_SETMACADDRESSSDATABASE 0x03 -+#define NPE_GETSTATS 0x04 -+#define NPE_RESETSTATS 0x05 -+#define NPE_SETMAXFRAMELENGTHS 0x06 -+#define NPE_VLAN_SETRXTAGMODE 0x07 -+#define NPE_VLAN_SETDEFAULTRXVID 0x08 -+#define NPE_VLAN_SETPORTVLANTABLEENTRY 0x09 -+#define NPE_VLAN_SETPORTVLANTABLERANGE 0x0A -+#define NPE_VLAN_SETRXQOSENTRY 0x0B -+#define NPE_VLAN_SETPORTIDEXTRACTIONMODE 0x0C -+#define NPE_STP_SETBLOCKINGSTATE 0x0D -+#define NPE_FW_SETFIREWALLMODE 0x0E -+#define NPE_PC_SETFRAMECONTROLDURATIONID 0x0F -+#define NPE_PC_SETAPMACTABLE 0x11 -+#define NPE_SETLOOPBACK_MODE 0x12 -+#define NPE_PC_SETBSSIDTABLE 0x13 -+#define NPE_ADDRESS_FILTER_CONFIG 0x14 -+#define NPE_APPENDFCSCONFIG 0x15 -+#define NPE_NOTIFY_MAC_RECOVERY_DONE 0x16 -+#define NPE_MAC_RECOVERY_START 0x17 -+ -+ -+#ifdef __ARMEB__ -+typedef struct sk_buff buffer_t; -+#define free_buffer dev_kfree_skb -+#define free_buffer_irq dev_kfree_skb_irq -+#else -+typedef void buffer_t; -+#define free_buffer kfree -+#define free_buffer_irq kfree -+#endif -+ -+struct eth_regs { -+ u32 tx_control[2], __res1[2]; /* 000 */ -+ u32 rx_control[2], __res2[2]; /* 010 */ -+ u32 random_seed, __res3[3]; /* 020 */ -+ u32 partial_empty_threshold, __res4; /* 030 */ -+ u32 partial_full_threshold, __res5; /* 038 */ -+ u32 tx_start_bytes, __res6[3]; /* 040 */ -+ u32 tx_deferral, rx_deferral,__res7[2]; /* 050 */ -+ u32 tx_2part_deferral[2], __res8[2]; /* 060 */ -+ u32 slot_time, __res9[3]; /* 070 */ -+ u32 mdio_command[4]; /* 080 */ -+ u32 mdio_status[4]; /* 090 */ -+ u32 mcast_mask[6], __res10[2]; /* 0A0 */ -+ u32 mcast_addr[6], __res11[2]; /* 0C0 */ -+ u32 int_clock_threshold, __res12[3]; /* 0E0 */ -+ u32 hw_addr[6], __res13[61]; /* 0F0 */ -+ u32 core_control; /* 1FC */ -+}; -+ -+struct port { -+ struct resource *mem_res; -+ struct eth_regs __iomem *regs; -+ struct npe *npe; -+ struct net_device *netdev; -+ struct net_device_stats stat; -+ struct mii_if_info mii; -+ struct delayed_work mdio_thread; -+ struct eth_plat_info *plat; -+ buffer_t *rx_buff_tab[RX_DESCS], *tx_buff_tab[TX_DESCS]; -+ struct desc *desc_tab; /* coherent */ -+ u32 desc_tab_phys; -+ int id; /* logical port ID */ -+ u16 mii_bmcr; -+}; -+ -+/* NPE message structure */ -+struct msg { -+#ifdef __ARMEB__ -+ u8 cmd, eth_id, byte2, byte3; -+ u8 byte4, byte5, byte6, byte7; -+#else -+ u8 byte3, byte2, eth_id, cmd; -+ u8 byte7, byte6, byte5, byte4; -+#endif -+}; -+ -+/* Ethernet packet descriptor */ -+struct desc { -+ u32 next; /* pointer to next buffer, unused */ -+ -+#ifdef __ARMEB__ -+ u16 buf_len; /* buffer length */ -+ u16 pkt_len; /* packet length */ -+ u32 data; /* pointer to data buffer in RAM */ -+ u8 dest_id; -+ u8 src_id; -+ u16 flags; -+ u8 qos; -+ u8 padlen; -+ u16 vlan_tci; -+#else -+ u16 pkt_len; /* packet length */ -+ u16 buf_len; /* buffer length */ -+ u32 data; /* pointer to data buffer in RAM */ -+ u16 flags; -+ u8 src_id; -+ u8 dest_id; -+ u16 vlan_tci; -+ u8 padlen; -+ u8 qos; -+#endif -+ -+#ifdef __ARMEB__ -+ u8 dst_mac_0, dst_mac_1, dst_mac_2, dst_mac_3; -+ u8 dst_mac_4, dst_mac_5, src_mac_0, src_mac_1; -+ u8 src_mac_2, src_mac_3, src_mac_4, src_mac_5; -+#else -+ u8 dst_mac_3, dst_mac_2, dst_mac_1, dst_mac_0; -+ u8 src_mac_1, src_mac_0, dst_mac_5, dst_mac_4; -+ u8 src_mac_5, src_mac_4, src_mac_3, src_mac_2; -+#endif -+}; -+ -+ -+#define rx_desc_phys(port, n) ((port)->desc_tab_phys + \ -+ (n) * sizeof(struct desc)) -+#define rx_desc_ptr(port, n) (&(port)->desc_tab[n]) -+ -+#define tx_desc_phys(port, n) ((port)->desc_tab_phys + \ -+ ((n) + RX_DESCS) * sizeof(struct desc)) -+#define tx_desc_ptr(port, n) (&(port)->desc_tab[(n) + RX_DESCS]) -+ -+#ifndef __ARMEB__ -+static inline void memcpy_swab32(u32 *dest, u32 *src, int cnt) -+{ -+ int i; -+ for (i = 0; i < cnt; i++) -+ dest[i] = swab32(src[i]); -+} -+#endif -+ -+static spinlock_t mdio_lock; -+static struct eth_regs __iomem *mdio_regs; /* mdio command and status only */ -+static int ports_open; -+static struct port *npe_port_tab[MAX_NPES]; -+static struct dma_pool *dma_pool; -+ -+ -+static u16 mdio_cmd(struct net_device *dev, int phy_id, int location, -+ int write, u16 cmd) -+{ -+ int cycles = 0; -+ -+ if (__raw_readl(&mdio_regs->mdio_command[3]) & 0x80) { -+ printk(KERN_ERR "%s: MII not ready to transmit\n", dev->name); -+ return 0; -+ } -+ -+ if (write) { -+ __raw_writel(cmd & 0xFF, &mdio_regs->mdio_command[0]); -+ __raw_writel(cmd >> 8, &mdio_regs->mdio_command[1]); -+ } -+ __raw_writel(((phy_id << 5) | location) & 0xFF, -+ &mdio_regs->mdio_command[2]); -+ __raw_writel((phy_id >> 3) | (write << 2) | 0x80 /* GO */, -+ &mdio_regs->mdio_command[3]); -+ -+ while ((cycles < MAX_MDIO_RETRIES) && -+ (__raw_readl(&mdio_regs->mdio_command[3]) & 0x80)) { -+ udelay(1); -+ cycles++; -+ } -+ -+ if (cycles == MAX_MDIO_RETRIES) { -+ printk(KERN_ERR "%s: MII write failed\n", dev->name); -+ return 0; -+ } -+ -+#if DEBUG_MDIO -+ printk(KERN_DEBUG "%s: mdio_cmd() took %i cycles\n", dev->name, -+ cycles); -+#endif -+ -+ if (write) -+ return 0; -+ -+ if (__raw_readl(&mdio_regs->mdio_status[3]) & 0x80) { -+ printk(KERN_ERR "%s: MII read failed\n", dev->name); -+ return 0; -+ } -+ -+ return (__raw_readl(&mdio_regs->mdio_status[0]) & 0xFF) | -+ (__raw_readl(&mdio_regs->mdio_status[1]) << 8); -+} -+ -+static int mdio_read(struct net_device *dev, int phy_id, int location) -+{ -+ unsigned long flags; -+ u16 val; -+ -+ spin_lock_irqsave(&mdio_lock, flags); -+ val = mdio_cmd(dev, phy_id, location, 0, 0); -+ spin_unlock_irqrestore(&mdio_lock, flags); -+ return val; -+} -+ -+static void mdio_write(struct net_device *dev, int phy_id, int location, -+ int val) -+{ -+ unsigned long flags; -+ -+ spin_lock_irqsave(&mdio_lock, flags); -+ mdio_cmd(dev, phy_id, location, 1, val); -+ spin_unlock_irqrestore(&mdio_lock, flags); -+} -+ -+static void phy_reset(struct net_device *dev, int phy_id) -+{ -+ struct port *port = netdev_priv(dev); -+ int cycles = 0; -+ -+ mdio_write(dev, phy_id, MII_BMCR, port->mii_bmcr | BMCR_RESET); -+ -+ while (cycles < MAX_MII_RESET_RETRIES) { -+ if (!(mdio_read(dev, phy_id, MII_BMCR) & BMCR_RESET)) { -+#if DEBUG_MDIO -+ printk(KERN_DEBUG "%s: phy_reset() took %i cycles\n", -+ dev->name, cycles); -+#endif -+ return; -+ } -+ udelay(1); -+ cycles++; -+ } -+ -+ printk(KERN_ERR "%s: MII reset failed\n", dev->name); -+} -+ -+static void eth_set_duplex(struct port *port) -+{ -+ if (port->mii.full_duplex) -+ __raw_writel(DEFAULT_TX_CNTRL0 & ~TX_CNTRL0_HALFDUPLEX, -+ &port->regs->tx_control[0]); -+ else -+ __raw_writel(DEFAULT_TX_CNTRL0 | TX_CNTRL0_HALFDUPLEX, -+ &port->regs->tx_control[0]); -+} -+ -+ -+static void phy_check_media(struct port *port, int init) -+{ -+ if (mii_check_media(&port->mii, 1, init)) -+ eth_set_duplex(port); -+ if (port->mii.force_media) { /* mii_check_media() doesn't work */ -+ struct net_device *dev = port->netdev; -+ int cur_link = mii_link_ok(&port->mii); -+ int prev_link = netif_carrier_ok(dev); -+ -+ if (!prev_link && cur_link) { -+ printk(KERN_INFO "%s: link up\n", dev->name); -+ netif_carrier_on(dev); -+ } else if (prev_link && !cur_link) { -+ printk(KERN_INFO "%s: link down\n", dev->name); -+ netif_carrier_off(dev); -+ } -+ } -+} -+ -+ -+static void mdio_thread(struct work_struct *work) -+{ -+ struct port *port = container_of(work, struct port, mdio_thread.work); -+ -+ phy_check_media(port, 0); -+ schedule_delayed_work(&port->mdio_thread, MDIO_INTERVAL); -+} -+ -+ -+static inline void debug_pkt(struct net_device *dev, const char *func, -+ u8 *data, int len) -+{ -+#if DEBUG_PKT_BYTES -+ int i; -+ -+ printk(KERN_DEBUG "%s: %s(%i) ", dev->name, func, len); -+ for (i = 0; i < len; i++) { -+ if (i >= DEBUG_PKT_BYTES) -+ break; -+ printk("%s%02X", -+ ((i == 6) || (i == 12) || (i >= 14)) ? " " : "", -+ data[i]); -+ } -+ printk("\n"); -+#endif -+} -+ -+ -+static inline void debug_desc(u32 phys, struct desc *desc) -+{ -+#if DEBUG_DESC -+ printk(KERN_DEBUG "%X: %X %3X %3X %08X %2X < %2X %4X %X" -+ " %X %X %02X%02X%02X%02X%02X%02X < %02X%02X%02X%02X%02X%02X\n", -+ phys, desc->next, desc->buf_len, desc->pkt_len, -+ desc->data, desc->dest_id, desc->src_id, desc->flags, -+ desc->qos, desc->padlen, desc->vlan_tci, -+ desc->dst_mac_0, desc->dst_mac_1, desc->dst_mac_2, -+ desc->dst_mac_3, desc->dst_mac_4, desc->dst_mac_5, -+ desc->src_mac_0, desc->src_mac_1, desc->src_mac_2, -+ desc->src_mac_3, desc->src_mac_4, desc->src_mac_5); -+#endif -+} -+ -+static inline void debug_queue(unsigned int queue, int is_get, u32 phys) -+{ -+#if DEBUG_QUEUES -+ static struct { -+ int queue; -+ char *name; -+ } names[] = { -+ { TX_QUEUE(0x10), "TX#0 " }, -+ { TX_QUEUE(0x20), "TX#1 " }, -+ { TX_QUEUE(0x00), "TX#2 " }, -+ { RXFREE_QUEUE(0x10), "RX-free#0 " }, -+ { RXFREE_QUEUE(0x20), "RX-free#1 " }, -+ { RXFREE_QUEUE(0x00), "RX-free#2 " }, -+ { TXDONE_QUEUE, "TX-done " }, -+ }; -+ int i; -+ -+ for (i = 0; i < ARRAY_SIZE(names); i++) -+ if (names[i].queue == queue) -+ break; -+ -+ printk(KERN_DEBUG "Queue %i %s%s %X\n", queue, -+ i < ARRAY_SIZE(names) ? names[i].name : "", -+ is_get ? "->" : "<-", phys); -+#endif -+} -+ -+static inline u32 queue_get_entry(unsigned int queue) -+{ -+ u32 phys = qmgr_get_entry(queue); -+ debug_queue(queue, 1, phys); -+ return phys; -+} -+ -+static inline int queue_get_desc(unsigned int queue, struct port *port, -+ int is_tx) -+{ -+ u32 phys, tab_phys, n_desc; -+ struct desc *tab; -+ -+ if (!(phys = queue_get_entry(queue))) -+ return -1; -+ -+ phys &= ~0x1F; /* mask out non-address bits */ -+ tab_phys = is_tx ? tx_desc_phys(port, 0) : rx_desc_phys(port, 0); -+ tab = is_tx ? tx_desc_ptr(port, 0) : rx_desc_ptr(port, 0); -+ n_desc = (phys - tab_phys) / sizeof(struct desc); -+ BUG_ON(n_desc >= (is_tx ? TX_DESCS : RX_DESCS)); -+ debug_desc(phys, &tab[n_desc]); -+ BUG_ON(tab[n_desc].next); -+ return n_desc; -+} -+ -+static inline void queue_put_desc(unsigned int queue, u32 phys, -+ struct desc *desc) -+{ -+ debug_queue(queue, 0, phys); -+ debug_desc(phys, desc); -+ BUG_ON(phys & 0x1F); -+ qmgr_put_entry(queue, phys); -+ BUG_ON(qmgr_stat_overflow(queue)); -+} -+ -+ -+static inline void dma_unmap_tx(struct port *port, struct desc *desc) -+{ -+#ifdef __ARMEB__ -+ dma_unmap_single(&port->netdev->dev, desc->data, -+ desc->buf_len, DMA_TO_DEVICE); -+#else -+ dma_unmap_single(&port->netdev->dev, desc->data & ~3, -+ ALIGN((desc->data & 3) + desc->buf_len, 4), -+ DMA_TO_DEVICE); -+#endif -+} -+ -+ -+static void eth_rx_irq(void *pdev) -+{ -+ struct net_device *dev = pdev; -+ struct port *port = netdev_priv(dev); -+ -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: eth_rx_irq\n", dev->name); -+#endif -+ qmgr_disable_irq(port->plat->rxq); -+ netif_rx_schedule(dev); -+} -+ -+static int eth_poll(struct net_device *dev, int *budget) -+{ -+ struct port *port = netdev_priv(dev); -+ unsigned int rxq = port->plat->rxq, rxfreeq = RXFREE_QUEUE(port->id); -+ int quota = dev->quota, received = 0; -+ -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: eth_poll\n", dev->name); -+#endif -+ -+ while (quota) { -+ struct sk_buff *skb; -+ struct desc *desc; -+ int n; -+#ifdef __ARMEB__ -+ struct sk_buff *temp; -+ u32 phys; -+#endif -+ -+ if ((n = queue_get_desc(rxq, port, 0)) < 0) { -+ dev->quota -= received; /* No packet received */ -+ *budget -= received; -+ received = 0; -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: eth_poll netif_rx_complete\n", -+ dev->name); -+#endif -+ netif_rx_complete(dev); -+ qmgr_enable_irq(rxq); -+ if (!qmgr_stat_empty(rxq) && -+ netif_rx_reschedule(dev, 0)) { -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: eth_poll" -+ " netif_rx_reschedule successed\n", -+ dev->name); -+#endif -+ qmgr_disable_irq(rxq); -+ continue; -+ } -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: eth_poll all done\n", -+ dev->name); -+#endif -+ return 0; /* all work done */ -+ } -+ -+ desc = rx_desc_ptr(port, n); -+ -+#ifdef __ARMEB__ -+ if ((skb = netdev_alloc_skb(dev, MAX_MRU)) != NULL) { -+ phys = dma_map_single(&dev->dev, skb->data, -+ MAX_MRU, DMA_FROM_DEVICE); -+ if (dma_mapping_error(phys)) { -+ dev_kfree_skb(skb); -+ skb = NULL; -+ } -+ } -+#else -+ skb = netdev_alloc_skb(dev, desc->pkt_len); -+#endif -+ -+ if (!skb) { -+ port->stat.rx_dropped++; -+ /* put the desc back on RX-ready queue */ -+ desc->buf_len = MAX_MRU; -+ desc->pkt_len = 0; -+ queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc); -+ continue; -+ } -+ -+ /* process received frame */ -+#ifdef __ARMEB__ -+ temp = skb; -+ skb = port->rx_buff_tab[n]; -+ dma_unmap_single(&dev->dev, desc->data, -+ MAX_MRU, DMA_FROM_DEVICE); -+#else -+ dma_sync_single(&dev->dev, desc->data, -+ MAX_MRU, DMA_FROM_DEVICE); -+ memcpy_swab32((u32 *)skb->data, (u32 *)port->rx_buff_tab[n], -+ ALIGN(desc->pkt_len, 4) / 4); -+#endif -+ skb_put(skb, desc->pkt_len); -+ -+ debug_pkt(dev, "eth_poll", skb->data, skb->len); -+ -+ skb->protocol = eth_type_trans(skb, dev); -+ dev->last_rx = jiffies; -+ port->stat.rx_packets++; -+ port->stat.rx_bytes += skb->len; -+ netif_receive_skb(skb); -+ -+ /* put the new buffer on RX-free queue */ -+#ifdef __ARMEB__ -+ port->rx_buff_tab[n] = temp; -+ desc->data = phys; -+#endif -+ desc->buf_len = MAX_MRU; -+ desc->pkt_len = 0; -+ queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc); -+ quota--; -+ received++; -+ } -+ dev->quota -= received; -+ *budget -= received; -+#if DEBUG_RX -+ printk(KERN_DEBUG "eth_poll(): end, not all work done\n"); -+#endif -+ return 1; /* not all work done */ -+} -+ -+ -+static void eth_txdone_irq(void *unused) -+{ -+ u32 phys; -+ -+#if DEBUG_TX -+ printk(KERN_DEBUG DRV_NAME ": eth_txdone_irq\n"); -+#endif -+ while ((phys = queue_get_entry(TXDONE_QUEUE)) != 0) { -+ u32 npe_id, n_desc; -+ struct port *port; -+ struct desc *desc; -+ int start; -+ -+ npe_id = phys & 3; -+ BUG_ON(npe_id >= MAX_NPES); -+ port = npe_port_tab[npe_id]; -+ BUG_ON(!port); -+ phys &= ~0x1F; /* mask out non-address bits */ -+ n_desc = (phys - tx_desc_phys(port, 0)) / sizeof(struct desc); -+ BUG_ON(n_desc >= TX_DESCS); -+ desc = tx_desc_ptr(port, n_desc); -+ debug_desc(phys, desc); -+ -+ if (port->tx_buff_tab[n_desc]) { /* not the draining packet */ -+ port->stat.tx_packets++; -+ port->stat.tx_bytes += desc->pkt_len; -+ -+ dma_unmap_tx(port, desc); -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: eth_txdone_irq free %p\n", -+ port->netdev->name, port->tx_buff_tab[n_desc]); -+#endif -+ free_buffer_irq(port->tx_buff_tab[n_desc]); -+ port->tx_buff_tab[n_desc] = NULL; -+ } -+ -+ start = qmgr_stat_empty(port->plat->txreadyq); -+ queue_put_desc(port->plat->txreadyq, phys, desc); -+ if (start) { -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: eth_txdone_irq xmit ready\n", -+ port->netdev->name); -+#endif -+ netif_wake_queue(port->netdev); -+ } -+ } -+} -+ -+static int eth_xmit(struct sk_buff *skb, struct net_device *dev) -+{ -+ struct port *port = netdev_priv(dev); -+ unsigned int txreadyq = port->plat->txreadyq; -+ int len, offset, bytes, n; -+ void *mem; -+ u32 phys; -+ struct desc *desc; -+ -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: eth_xmit\n", dev->name); -+#endif -+ -+ if (unlikely(skb->len > MAX_MRU)) { -+ dev_kfree_skb(skb); -+ port->stat.tx_errors++; -+ return NETDEV_TX_OK; -+ } -+ -+ debug_pkt(dev, "eth_xmit", skb->data, skb->len); -+ -+ len = skb->len; -+#ifdef __ARMEB__ -+ offset = 0; /* no need to keep alignment */ -+ bytes = len; -+ mem = skb->data; -+#else -+ offset = (int)skb->data & 3; /* keep 32-bit alignment */ -+ bytes = ALIGN(offset + len, 4); -+ if (!(mem = kmalloc(bytes, GFP_ATOMIC))) { -+ dev_kfree_skb(skb); -+ port->stat.tx_dropped++; -+ return NETDEV_TX_OK; -+ } -+ memcpy_swab32(mem, (u32 *)((int)skb->data & ~3), bytes / 4); -+ dev_kfree_skb(skb); -+#endif -+ -+ phys = dma_map_single(&dev->dev, mem, bytes, DMA_TO_DEVICE); -+ if (dma_mapping_error(phys)) { -+#ifdef __ARMEB__ -+ dev_kfree_skb(skb); -+#else -+ kfree(mem); -+#endif -+ port->stat.tx_dropped++; -+ return NETDEV_TX_OK; -+ } -+ -+ n = queue_get_desc(txreadyq, port, 1); -+ BUG_ON(n < 0); -+ desc = tx_desc_ptr(port, n); -+ -+#ifdef __ARMEB__ -+ port->tx_buff_tab[n] = skb; -+#else -+ port->tx_buff_tab[n] = mem; -+#endif -+ desc->data = phys + offset; -+ desc->buf_len = desc->pkt_len = len; -+ -+ /* NPE firmware pads short frames with zeros internally */ -+ wmb(); -+ queue_put_desc(TX_QUEUE(port->id), tx_desc_phys(port, n), desc); -+ dev->trans_start = jiffies; -+ -+ if (qmgr_stat_empty(txreadyq)) { -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: eth_xmit queue full\n", dev->name); -+#endif -+ netif_stop_queue(dev); -+ /* we could miss TX ready interrupt */ -+ if (!qmgr_stat_empty(txreadyq)) { -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: eth_xmit ready again\n", -+ dev->name); -+#endif -+ netif_wake_queue(dev); -+ } -+ } -+ -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: eth_xmit end\n", dev->name); -+#endif -+ return NETDEV_TX_OK; -+} -+ -+ -+static struct net_device_stats *eth_stats(struct net_device *dev) -+{ -+ struct port *port = netdev_priv(dev); -+ return &port->stat; -+} -+ -+static void eth_set_mcast_list(struct net_device *dev) -+{ -+ struct port *port = netdev_priv(dev); -+ struct dev_mc_list *mclist = dev->mc_list; -+ u8 diffs[ETH_ALEN], *addr; -+ int cnt = dev->mc_count, i; -+ -+ if ((dev->flags & IFF_PROMISC) || !mclist || !cnt) { -+ __raw_writel(DEFAULT_RX_CNTRL0 & ~RX_CNTRL0_ADDR_FLTR_EN, -+ &port->regs->rx_control[0]); -+ return; -+ } -+ -+ memset(diffs, 0, ETH_ALEN); -+ addr = mclist->dmi_addr; /* first MAC address */ -+ -+ while (--cnt && (mclist = mclist->next)) -+ for (i = 0; i < ETH_ALEN; i++) -+ diffs[i] |= addr[i] ^ mclist->dmi_addr[i]; -+ -+ for (i = 0; i < ETH_ALEN; i++) { -+ __raw_writel(addr[i], &port->regs->mcast_addr[i]); -+ __raw_writel(~diffs[i], &port->regs->mcast_mask[i]); -+ } -+ -+ __raw_writel(DEFAULT_RX_CNTRL0 | RX_CNTRL0_ADDR_FLTR_EN, -+ &port->regs->rx_control[0]); -+} -+ -+ -+static int eth_ioctl(struct net_device *dev, struct ifreq *req, int cmd) -+{ -+ struct port *port = netdev_priv(dev); -+ unsigned int duplex_chg; -+ int err; -+ -+ if (!netif_running(dev)) -+ return -EINVAL; -+ err = generic_mii_ioctl(&port->mii, if_mii(req), cmd, &duplex_chg); -+ if (duplex_chg) -+ eth_set_duplex(port); -+ return err; -+} -+ -+ -+static int request_queues(struct port *port) -+{ -+ int err; -+ -+ err = qmgr_request_queue(RXFREE_QUEUE(port->id), RX_DESCS, 0, 0); -+ if (err) -+ return err; -+ -+ err = qmgr_request_queue(port->plat->rxq, RX_DESCS, 0, 0); -+ if (err) -+ goto rel_rxfree; -+ -+ err = qmgr_request_queue(TX_QUEUE(port->id), TX_DESCS, 0, 0); -+ if (err) -+ goto rel_rx; -+ -+ err = qmgr_request_queue(port->plat->txreadyq, TX_DESCS, 0, 0); -+ if (err) -+ goto rel_tx; -+ -+ /* TX-done queue handles skbs sent out by the NPEs */ -+ if (!ports_open) { -+ err = qmgr_request_queue(TXDONE_QUEUE, TXDONE_QUEUE_LEN, 0, 0); -+ if (err) -+ goto rel_txready; -+ } -+ return 0; -+ -+rel_txready: -+ qmgr_release_queue(port->plat->txreadyq); -+rel_tx: -+ qmgr_release_queue(TX_QUEUE(port->id)); -+rel_rx: -+ qmgr_release_queue(port->plat->rxq); -+rel_rxfree: -+ qmgr_release_queue(RXFREE_QUEUE(port->id)); -+ printk(KERN_DEBUG "%s: unable to request hardware queues\n", -+ port->netdev->name); -+ return err; -+} -+ -+static void release_queues(struct port *port) -+{ -+ qmgr_release_queue(RXFREE_QUEUE(port->id)); -+ qmgr_release_queue(port->plat->rxq); -+ qmgr_release_queue(TX_QUEUE(port->id)); -+ qmgr_release_queue(port->plat->txreadyq); -+ -+ if (!ports_open) -+ qmgr_release_queue(TXDONE_QUEUE); -+} -+ -+static int init_queues(struct port *port) -+{ -+ int i; -+ -+ if (!ports_open) -+ if (!(dma_pool = dma_pool_create(DRV_NAME, NULL, -+ POOL_ALLOC_SIZE, 32, 0))) -+ return -ENOMEM; -+ -+ if (!(port->desc_tab = dma_pool_alloc(dma_pool, GFP_KERNEL, -+ &port->desc_tab_phys))) -+ return -ENOMEM; -+ memset(port->desc_tab, 0, POOL_ALLOC_SIZE); -+ memset(port->rx_buff_tab, 0, sizeof(port->rx_buff_tab)); /* tables */ -+ memset(port->tx_buff_tab, 0, sizeof(port->tx_buff_tab)); -+ -+ /* Setup RX buffers */ -+ for (i = 0; i < RX_DESCS; i++) { -+ struct desc *desc = rx_desc_ptr(port, i); -+ buffer_t *buff; -+ void *data; -+#ifdef __ARMEB__ -+ if (!(buff = netdev_alloc_skb(port->netdev, MAX_MRU))) -+ return -ENOMEM; -+ data = buff->data; -+#else -+ if (!(buff = kmalloc(MAX_MRU, GFP_KERNEL))) -+ return -ENOMEM; -+ data = buff; -+#endif -+ desc->buf_len = MAX_MRU; -+ desc->data = dma_map_single(&port->netdev->dev, data, -+ MAX_MRU, DMA_FROM_DEVICE); -+ if (dma_mapping_error(desc->data)) { -+ free_buffer(buff); -+ return -EIO; -+ } -+ port->rx_buff_tab[i] = buff; -+ } -+ -+ return 0; -+} -+ -+static void destroy_queues(struct port *port) -+{ -+ int i; -+ -+ if (port->desc_tab) { -+ for (i = 0; i < RX_DESCS; i++) { -+ struct desc *desc = rx_desc_ptr(port, i); -+ buffer_t *buff = port->rx_buff_tab[i]; -+ if (buff) { -+ dma_unmap_single(&port->netdev->dev, -+ desc->data, MAX_MRU, -+ DMA_FROM_DEVICE); -+ free_buffer(buff); -+ } -+ } -+ for (i = 0; i < TX_DESCS; i++) { -+ struct desc *desc = tx_desc_ptr(port, i); -+ buffer_t *buff = port->tx_buff_tab[i]; -+ if (buff) { -+ dma_unmap_tx(port, desc); -+ free_buffer(buff); -+ } -+ } -+ dma_pool_free(dma_pool, port->desc_tab, port->desc_tab_phys); -+ port->desc_tab = NULL; -+ } -+ -+ if (!ports_open && dma_pool) { -+ dma_pool_destroy(dma_pool); -+ dma_pool = NULL; -+ } -+} -+ -+static int eth_open(struct net_device *dev) -+{ -+ struct port *port = netdev_priv(dev); -+ struct npe *npe = port->npe; -+ struct msg msg; -+ int i, err; -+ -+ if (!npe_running(npe)) { -+ err = npe_load_firmware(npe, npe_name(npe), &dev->dev); -+ if (err) -+ return err; -+ -+ if (npe_recv_message(npe, &msg, "ETH_GET_STATUS")) { -+ printk(KERN_ERR "%s: %s not responding\n", dev->name, -+ npe_name(npe)); -+ return -EIO; -+ } -+ } -+ -+ mdio_write(dev, port->plat->phy, MII_BMCR, port->mii_bmcr); -+ -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = NPE_VLAN_SETRXQOSENTRY; -+ msg.eth_id = port->id; -+ msg.byte5 = port->plat->rxq | 0x80; -+ msg.byte7 = port->plat->rxq << 4; -+ for (i = 0; i < 8; i++) { -+ msg.byte3 = i; -+ if (npe_send_recv_message(port->npe, &msg, "ETH_SET_RXQ")) -+ return -EIO; -+ } -+ -+ msg.cmd = NPE_EDB_SETPORTADDRESS; -+ msg.eth_id = PHYSICAL_ID(port->id); -+ msg.byte2 = dev->dev_addr[0]; -+ msg.byte3 = dev->dev_addr[1]; -+ msg.byte4 = dev->dev_addr[2]; -+ msg.byte5 = dev->dev_addr[3]; -+ msg.byte6 = dev->dev_addr[4]; -+ msg.byte7 = dev->dev_addr[5]; -+ if (npe_send_recv_message(port->npe, &msg, "ETH_SET_MAC")) -+ return -EIO; -+ -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = NPE_FW_SETFIREWALLMODE; -+ msg.eth_id = port->id; -+ if (npe_send_recv_message(port->npe, &msg, "ETH_SET_FIREWALL_MODE")) -+ return -EIO; -+ -+ if ((err = request_queues(port)) != 0) -+ return err; -+ -+ if ((err = init_queues(port)) != 0) { -+ destroy_queues(port); -+ release_queues(port); -+ return err; -+ } -+ -+ for (i = 0; i < ETH_ALEN; i++) -+ __raw_writel(dev->dev_addr[i], &port->regs->hw_addr[i]); -+ __raw_writel(0x08, &port->regs->random_seed); -+ __raw_writel(0x12, &port->regs->partial_empty_threshold); -+ __raw_writel(0x30, &port->regs->partial_full_threshold); -+ __raw_writel(0x08, &port->regs->tx_start_bytes); -+ __raw_writel(0x15, &port->regs->tx_deferral); -+ __raw_writel(0x08, &port->regs->tx_2part_deferral[0]); -+ __raw_writel(0x07, &port->regs->tx_2part_deferral[1]); -+ __raw_writel(0x80, &port->regs->slot_time); -+ __raw_writel(0x01, &port->regs->int_clock_threshold); -+ -+ /* Populate queues with buffers, no failure after this point */ -+ for (i = 0; i < TX_DESCS; i++) -+ queue_put_desc(port->plat->txreadyq, -+ tx_desc_phys(port, i), tx_desc_ptr(port, i)); -+ -+ for (i = 0; i < RX_DESCS; i++) -+ queue_put_desc(RXFREE_QUEUE(port->id), -+ rx_desc_phys(port, i), rx_desc_ptr(port, i)); -+ -+ __raw_writel(TX_CNTRL1_RETRIES, &port->regs->tx_control[1]); -+ __raw_writel(DEFAULT_TX_CNTRL0, &port->regs->tx_control[0]); -+ __raw_writel(0, &port->regs->rx_control[1]); -+ __raw_writel(DEFAULT_RX_CNTRL0, &port->regs->rx_control[0]); -+ -+ phy_check_media(port, 1); -+ eth_set_mcast_list(dev); -+ netif_start_queue(dev); -+ schedule_delayed_work(&port->mdio_thread, MDIO_INTERVAL); -+ -+ qmgr_set_irq(port->plat->rxq, QUEUE_IRQ_SRC_NOT_EMPTY, -+ eth_rx_irq, dev); -+ if (!ports_open) { -+ qmgr_set_irq(TXDONE_QUEUE, QUEUE_IRQ_SRC_NOT_EMPTY, -+ eth_txdone_irq, NULL); -+ qmgr_enable_irq(TXDONE_QUEUE); -+ } -+ ports_open++; -+ netif_rx_schedule(dev); /* we may already have RX data, enables IRQ */ -+ return 0; -+} -+ -+static int eth_close(struct net_device *dev) -+{ -+ struct port *port = netdev_priv(dev); -+ struct msg msg; -+ int buffs = RX_DESCS; /* allocated RX buffers */ -+ int i; -+ -+ ports_open--; -+ qmgr_disable_irq(port->plat->rxq); -+ netif_stop_queue(dev); -+ -+ while (queue_get_desc(RXFREE_QUEUE(port->id), port, 0) >= 0) -+ buffs--; -+ -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = NPE_SETLOOPBACK_MODE; -+ msg.eth_id = port->id; -+ msg.byte3 = 1; -+ if (npe_send_recv_message(port->npe, &msg, "ETH_ENABLE_LOOPBACK")) -+ printk(KERN_CRIT "%s: unable to enable loopback\n", dev->name); -+ -+ i = 0; -+ do { /* drain RX buffers */ -+ while (queue_get_desc(port->plat->rxq, port, 0) >= 0) -+ buffs--; -+ if (!buffs) -+ break; -+ if (qmgr_stat_empty(TX_QUEUE(port->id))) { -+ /* we have to inject some packet */ -+ struct desc *desc; -+ u32 phys; -+ int n = queue_get_desc(port->plat->txreadyq, port, 1); -+ BUG_ON(n < 0); -+ desc = tx_desc_ptr(port, n); -+ phys = tx_desc_phys(port, n); -+ desc->buf_len = desc->pkt_len = 1; -+ wmb(); -+ queue_put_desc(TX_QUEUE(port->id), phys, desc); -+ } -+ udelay(1); -+ } while (++i < MAX_CLOSE_WAIT); -+ -+ if (buffs) -+ printk(KERN_CRIT "%s: unable to drain RX queue, %i buffer(s)" -+ " left in NPE\n", dev->name, buffs); -+#if DEBUG_CLOSE -+ if (!buffs) -+ printk(KERN_DEBUG "Draining RX queue took %i cycles\n", i); -+#endif -+ -+ buffs = TX_DESCS; -+ while (queue_get_desc(TX_QUEUE(port->id), port, 1) >= 0) -+ buffs--; /* cancel TX */ -+ -+ i = 0; -+ do { -+ while (queue_get_desc(port->plat->txreadyq, port, 1) >= 0) -+ buffs--; -+ if (!buffs) -+ break; -+ } while (++i < MAX_CLOSE_WAIT); -+ -+ if (buffs) -+ printk(KERN_CRIT "%s: unable to drain TX queue, %i buffer(s) " -+ "left in NPE\n", dev->name, buffs); -+#if DEBUG_CLOSE -+ if (!buffs) -+ printk(KERN_DEBUG "Draining TX queues took %i cycles\n", i); -+#endif -+ -+ msg.byte3 = 0; -+ if (npe_send_recv_message(port->npe, &msg, "ETH_DISABLE_LOOPBACK")) -+ printk(KERN_CRIT "%s: unable to disable loopback\n", -+ dev->name); -+ -+ port->mii_bmcr = mdio_read(dev, port->plat->phy, MII_BMCR) & -+ ~(BMCR_RESET | BMCR_PDOWN); /* may have been altered */ -+ mdio_write(dev, port->plat->phy, MII_BMCR, -+ port->mii_bmcr | BMCR_PDOWN); -+ -+ if (!ports_open) -+ qmgr_disable_irq(TXDONE_QUEUE); -+ cancel_rearming_delayed_work(&port->mdio_thread); -+ destroy_queues(port); -+ release_queues(port); -+ return 0; -+} -+ -+static int __devinit eth_init_one(struct platform_device *pdev) -+{ -+ struct port *port; -+ struct net_device *dev; -+ struct eth_plat_info *plat = pdev->dev.platform_data; -+ u32 regs_phys; -+ int err; -+ -+ if (!(dev = alloc_etherdev(sizeof(struct port)))) -+ return -ENOMEM; -+ -+ SET_MODULE_OWNER(dev); -+ SET_NETDEV_DEV(dev, &pdev->dev); -+ port = netdev_priv(dev); -+ port->netdev = dev; -+ port->id = pdev->id; -+ -+ switch (port->id) { -+ case IXP4XX_ETH_NPEA: -+ port->regs = (struct eth_regs __iomem *)IXP4XX_EthA_BASE_VIRT; -+ regs_phys = IXP4XX_EthA_BASE_PHYS; -+ break; -+ case IXP4XX_ETH_NPEB: -+ port->regs = (struct eth_regs __iomem *)IXP4XX_EthB_BASE_VIRT; -+ regs_phys = IXP4XX_EthB_BASE_PHYS; -+ break; -+ case IXP4XX_ETH_NPEC: -+ port->regs = (struct eth_regs __iomem *)IXP4XX_EthC_BASE_VIRT; -+ regs_phys = IXP4XX_EthC_BASE_PHYS; -+ break; -+ default: -+ err = -ENOSYS; -+ goto err_free; -+ } -+ -+ dev->open = eth_open; -+ dev->hard_start_xmit = eth_xmit; -+ dev->poll = eth_poll; -+ dev->stop = eth_close; -+ dev->get_stats = eth_stats; -+ dev->do_ioctl = eth_ioctl; -+ dev->set_multicast_list = eth_set_mcast_list; -+ dev->weight = 16; -+ dev->tx_queue_len = 100; -+ -+ if (!(port->npe = npe_request(NPE_ID(port->id)))) { -+ err = -EIO; -+ goto err_free; -+ } -+ -+ if (register_netdev(dev)) { -+ err = -EIO; -+ goto err_npe_rel; -+ } -+ -+ port->mem_res = request_mem_region(regs_phys, REGS_SIZE, dev->name); -+ if (!port->mem_res) { -+ err = -EBUSY; -+ goto err_unreg; -+ } -+ -+ port->plat = plat; -+ npe_port_tab[NPE_ID(port->id)] = port; -+ memcpy(dev->dev_addr, plat->hwaddr, ETH_ALEN); -+ -+ platform_set_drvdata(pdev, dev); -+ -+ __raw_writel(DEFAULT_CORE_CNTRL | CORE_RESET, -+ &port->regs->core_control); -+ udelay(50); -+ __raw_writel(DEFAULT_CORE_CNTRL, &port->regs->core_control); -+ udelay(50); -+ -+ port->mii.dev = dev; -+ port->mii.mdio_read = mdio_read; -+ port->mii.mdio_write = mdio_write; -+ port->mii.phy_id = plat->phy; -+ port->mii.phy_id_mask = 0x1F; -+ port->mii.reg_num_mask = 0x1F; -+ -+ printk(KERN_INFO "%s: MII PHY %i on %s\n", dev->name, plat->phy, -+ npe_name(port->npe)); -+ -+ phy_reset(dev, plat->phy); -+ port->mii_bmcr = mdio_read(dev, plat->phy, MII_BMCR) & -+ ~(BMCR_RESET | BMCR_PDOWN); -+ mdio_write(dev, plat->phy, MII_BMCR, port->mii_bmcr | BMCR_PDOWN); -+ -+ INIT_DELAYED_WORK(&port->mdio_thread, mdio_thread); -+ return 0; -+ -+err_unreg: -+ unregister_netdev(dev); -+err_npe_rel: -+ npe_release(port->npe); -+err_free: -+ free_netdev(dev); -+ return err; -+} -+ -+static int __devexit eth_remove_one(struct platform_device *pdev) -+{ -+ struct net_device *dev = platform_get_drvdata(pdev); -+ struct port *port = netdev_priv(dev); -+ -+ unregister_netdev(dev); -+ npe_port_tab[NPE_ID(port->id)] = NULL; -+ platform_set_drvdata(pdev, NULL); -+ npe_release(port->npe); -+ release_resource(port->mem_res); -+ free_netdev(dev); -+ return 0; -+} -+ -+static struct platform_driver drv = { -+ .driver.name = DRV_NAME, -+ .probe = eth_init_one, -+ .remove = eth_remove_one, -+}; -+ -+static int __init eth_init_module(void) -+{ -+ if (!(ixp4xx_read_feature_bits() & IXP4XX_FEATURE_NPEB_ETH0)) -+ return -ENOSYS; -+ -+ /* All MII PHY accesses use NPE-B Ethernet registers */ -+ spin_lock_init(&mdio_lock); -+ mdio_regs = (struct eth_regs __iomem *)IXP4XX_EthB_BASE_VIRT; -+ __raw_writel(DEFAULT_CORE_CNTRL, &mdio_regs->core_control); -+ -+ return platform_driver_register(&drv); -+} -+ -+static void __exit eth_cleanup_module(void) -+{ -+ platform_driver_unregister(&drv); -+} -+ -+MODULE_AUTHOR("Krzysztof Halasa"); -+MODULE_DESCRIPTION("Intel IXP4xx Ethernet driver"); -+MODULE_LICENSE("GPL v2"); -+module_init(eth_init_module); -+module_exit(eth_cleanup_module); -Index: linux-2.6.23.17/drivers/net/wan/Kconfig -=================================================================== ---- linux-2.6.23.17.orig/drivers/net/wan/Kconfig -+++ linux-2.6.23.17/drivers/net/wan/Kconfig -@@ -334,6 +334,15 @@ config DSCC4_PCI_RST - - Say Y if your card supports this feature. - -+config IXP4XX_HSS -+ tristate "IXP4xx HSS (synchronous serial port) support" -+ depends on HDLC && ARM && ARCH_IXP4XX -+ select IXP4XX_NPE -+ select IXP4XX_QMGR -+ help -+ Say Y here if you want to use built-in HSS ports -+ on IXP4xx processor. -+ - config DLCI - tristate "Frame Relay DLCI support" - ---help--- -Index: linux-2.6.23.17/drivers/net/wan/Makefile -=================================================================== ---- linux-2.6.23.17.orig/drivers/net/wan/Makefile -+++ linux-2.6.23.17/drivers/net/wan/Makefile -@@ -42,6 +42,7 @@ obj-$(CONFIG_C101) += c101.o - obj-$(CONFIG_WANXL) += wanxl.o - obj-$(CONFIG_PCI200SYN) += pci200syn.o - obj-$(CONFIG_PC300TOO) += pc300too.o -+obj-$(CONFIG_IXP4XX_HSS) += ixp4xx_hss.o - - clean-files := wanxlfw.inc - $(obj)/wanxl.o: $(obj)/wanxlfw.inc -Index: linux-2.6.23.17/drivers/net/wan/ixp4xx_hss.c -=================================================================== ---- /dev/null -+++ linux-2.6.23.17/drivers/net/wan/ixp4xx_hss.c -@@ -0,0 +1,1270 @@ -+/* -+ * Intel IXP4xx HSS (synchronous serial port) driver for Linux -+ * -+ * Copyright (C) 2007 Krzysztof Halasa <khc@pm.waw.pl> -+ * -+ * This program is free software; you can redistribute it and/or modify it -+ * under the terms of version 2 of the GNU General Public License -+ * as published by the Free Software Foundation. -+ */ -+ -+#include <linux/dma-mapping.h> -+#include <linux/dmapool.h> -+#include <linux/io.h> -+#include <linux/kernel.h> -+#include <linux/hdlc.h> -+#include <linux/platform_device.h> -+#include <asm/arch/npe.h> -+#include <asm/arch/qmgr.h> -+ -+#define DEBUG_QUEUES 0 -+#define DEBUG_DESC 0 -+#define DEBUG_RX 0 -+#define DEBUG_TX 0 -+#define DEBUG_PKT_BYTES 0 -+#define DEBUG_CLOSE 0 -+ -+#define DRV_NAME "ixp4xx_hss" -+ -+#define PKT_EXTRA_FLAGS 0 /* orig 1 */ -+#define FRAME_SYNC_OFFSET 0 /* unused, channelized only */ -+#define FRAME_SYNC_SIZE 1024 -+#define PKT_NUM_PIPES 1 /* 1, 2 or 4 */ -+#define PKT_PIPE_FIFO_SIZEW 4 /* total 4 dwords per HSS */ -+ -+#define RX_DESCS 16 /* also length of all RX queues */ -+#define TX_DESCS 16 /* also length of all TX queues */ -+ -+#define POOL_ALLOC_SIZE (sizeof(struct desc) * (RX_DESCS + TX_DESCS)) -+#define RX_SIZE (HDLC_MAX_MRU + 4) /* NPE needs more space */ -+#define MAX_CLOSE_WAIT 1000 /* microseconds */ -+ -+/* Queue IDs */ -+#define HSS0_CHL_RXTRIG_QUEUE 12 /* orig size = 32 dwords */ -+#define HSS0_PKT_RX_QUEUE 13 /* orig size = 32 dwords */ -+#define HSS0_PKT_TX0_QUEUE 14 /* orig size = 16 dwords */ -+#define HSS0_PKT_TX1_QUEUE 15 -+#define HSS0_PKT_TX2_QUEUE 16 -+#define HSS0_PKT_TX3_QUEUE 17 -+#define HSS0_PKT_RXFREE0_QUEUE 18 /* orig size = 16 dwords */ -+#define HSS0_PKT_RXFREE1_QUEUE 19 -+#define HSS0_PKT_RXFREE2_QUEUE 20 -+#define HSS0_PKT_RXFREE3_QUEUE 21 -+#define HSS0_PKT_TXDONE_QUEUE 22 /* orig size = 64 dwords */ -+ -+#define HSS1_CHL_RXTRIG_QUEUE 10 -+#define HSS1_PKT_RX_QUEUE 0 -+#define HSS1_PKT_TX0_QUEUE 5 -+#define HSS1_PKT_TX1_QUEUE 6 -+#define HSS1_PKT_TX2_QUEUE 7 -+#define HSS1_PKT_TX3_QUEUE 8 -+#define HSS1_PKT_RXFREE0_QUEUE 1 -+#define HSS1_PKT_RXFREE1_QUEUE 2 -+#define HSS1_PKT_RXFREE2_QUEUE 3 -+#define HSS1_PKT_RXFREE3_QUEUE 4 -+#define HSS1_PKT_TXDONE_QUEUE 9 -+ -+#define NPE_PKT_MODE_HDLC 0 -+#define NPE_PKT_MODE_RAW 1 -+#define NPE_PKT_MODE_56KMODE 2 -+#define NPE_PKT_MODE_56KENDIAN_MSB 4 -+ -+/* PKT_PIPE_HDLC_CFG_WRITE flags */ -+#define PKT_HDLC_IDLE_ONES 0x1 /* default = flags */ -+#define PKT_HDLC_CRC_32 0x2 /* default = CRC-16 */ -+#define PKT_HDLC_MSB_ENDIAN 0x4 /* default = LE */ -+ -+ -+/* hss_config, PCRs */ -+/* Frame sync sampling, default = active low */ -+#define PCR_FRM_SYNC_ACTIVE_HIGH 0x40000000 -+#define PCR_FRM_SYNC_FALLINGEDGE 0x80000000 -+#define PCR_FRM_SYNC_RISINGEDGE 0xC0000000 -+ -+/* Frame sync pin: input (default) or output generated off a given clk edge */ -+#define PCR_FRM_SYNC_OUTPUT_FALLING 0x20000000 -+#define PCR_FRM_SYNC_OUTPUT_RISING 0x30000000 -+ -+/* Frame and data clock sampling on edge, default = falling */ -+#define PCR_FCLK_EDGE_RISING 0x08000000 -+#define PCR_DCLK_EDGE_RISING 0x04000000 -+ -+/* Clock direction, default = input */ -+#define PCR_SYNC_CLK_DIR_OUTPUT 0x02000000 -+ -+/* Generate/Receive frame pulses, default = enabled */ -+#define PCR_FRM_PULSE_DISABLED 0x01000000 -+ -+ /* Data rate is full (default) or half the configured clk speed */ -+#define PCR_HALF_CLK_RATE 0x00200000 -+ -+/* Invert data between NPE and HSS FIFOs? (default = no) */ -+#define PCR_DATA_POLARITY_INVERT 0x00100000 -+ -+/* TX/RX endianness, default = LSB */ -+#define PCR_MSB_ENDIAN 0x00080000 -+ -+/* Normal (default) / open drain mode (TX only) */ -+#define PCR_TX_PINS_OPEN_DRAIN 0x00040000 -+ -+/* No framing bit transmitted and expected on RX? (default = framing bit) */ -+#define PCR_SOF_NO_FBIT 0x00020000 -+ -+/* Drive data pins? */ -+#define PCR_TX_DATA_ENABLE 0x00010000 -+ -+/* Voice 56k type: drive the data pins low (default), high, high Z */ -+#define PCR_TX_V56K_HIGH 0x00002000 -+#define PCR_TX_V56K_HIGH_IMP 0x00004000 -+ -+/* Unassigned type: drive the data pins low (default), high, high Z */ -+#define PCR_TX_UNASS_HIGH 0x00000800 -+#define PCR_TX_UNASS_HIGH_IMP 0x00001000 -+ -+/* T1 @ 1.544MHz only: Fbit dictated in FIFO (default) or high Z */ -+#define PCR_TX_FB_HIGH_IMP 0x00000400 -+ -+/* 56k data endiannes - which bit unused: high (default) or low */ -+#define PCR_TX_56KE_BIT_0_UNUSED 0x00000200 -+ -+/* 56k data transmission type: 32/8 bit data (default) or 56K data */ -+#define PCR_TX_56KS_56K_DATA 0x00000100 -+ -+/* hss_config, cCR */ -+/* Number of packetized clients, default = 1 */ -+#define CCR_NPE_HFIFO_2_HDLC 0x04000000 -+#define CCR_NPE_HFIFO_3_OR_4HDLC 0x08000000 -+ -+/* default = no loopback */ -+#define CCR_LOOPBACK 0x02000000 -+ -+/* HSS number, default = 0 (first) */ -+#define CCR_SECOND_HSS 0x01000000 -+ -+ -+/* hss_config, clkCR: main:10, num:10, denom:12 */ -+#define CLK42X_SPEED_EXP ((0x3FF << 22) | ( 2 << 12) | 15) /*65 KHz*/ -+ -+#define CLK42X_SPEED_512KHZ (( 130 << 22) | ( 2 << 12) | 15) -+#define CLK42X_SPEED_1536KHZ (( 43 << 22) | ( 18 << 12) | 47) -+#define CLK42X_SPEED_1544KHZ (( 43 << 22) | ( 33 << 12) | 192) -+#define CLK42X_SPEED_2048KHZ (( 32 << 22) | ( 34 << 12) | 63) -+#define CLK42X_SPEED_4096KHZ (( 16 << 22) | ( 34 << 12) | 127) -+#define CLK42X_SPEED_8192KHZ (( 8 << 22) | ( 34 << 12) | 255) -+ -+#define CLK46X_SPEED_512KHZ (( 130 << 22) | ( 24 << 12) | 127) -+#define CLK46X_SPEED_1536KHZ (( 43 << 22) | (152 << 12) | 383) -+#define CLK46X_SPEED_1544KHZ (( 43 << 22) | ( 66 << 12) | 385) -+#define CLK46X_SPEED_2048KHZ (( 32 << 22) | (280 << 12) | 511) -+#define CLK46X_SPEED_4096KHZ (( 16 << 22) | (280 << 12) | 1023) -+#define CLK46X_SPEED_8192KHZ (( 8 << 22) | (280 << 12) | 2047) -+ -+ -+/* hss_config, LUT entries */ -+#define TDMMAP_UNASSIGNED 0 -+#define TDMMAP_HDLC 1 /* HDLC - packetized */ -+#define TDMMAP_VOICE56K 2 /* Voice56K - 7-bit channelized */ -+#define TDMMAP_VOICE64K 3 /* Voice64K - 8-bit channelized */ -+ -+#define TIMESLOTS 128 -+#define LUT_BITS 2 -+ -+/* offsets into HSS config */ -+#define HSS_CONFIG_TX_PCR 0x00 -+#define HSS_CONFIG_RX_PCR 0x04 -+#define HSS_CONFIG_CORE_CR 0x08 -+#define HSS_CONFIG_CLOCK_CR 0x0C -+#define HSS_CONFIG_TX_FCR 0x10 -+#define HSS_CONFIG_RX_FCR 0x14 -+#define HSS_CONFIG_TX_LUT 0x18 -+#define HSS_CONFIG_RX_LUT 0x38 -+ -+ -+/* NPE command codes */ -+/* writes the ConfigWord value to the location specified by offset */ -+#define PORT_CONFIG_WRITE 0x40 -+ -+/* triggers the NPE to load the contents of the configuration table */ -+#define PORT_CONFIG_LOAD 0x41 -+ -+/* triggers the NPE to return an HssErrorReadResponse message */ -+#define PORT_ERROR_READ 0x42 -+ -+/* reset NPE internal status and enable the HssChannelized operation */ -+#define CHAN_FLOW_ENABLE 0x43 -+#define CHAN_FLOW_DISABLE 0x44 -+#define CHAN_IDLE_PATTERN_WRITE 0x45 -+#define CHAN_NUM_CHANS_WRITE 0x46 -+#define CHAN_RX_BUF_ADDR_WRITE 0x47 -+#define CHAN_RX_BUF_CFG_WRITE 0x48 -+#define CHAN_TX_BLK_CFG_WRITE 0x49 -+#define CHAN_TX_BUF_ADDR_WRITE 0x4A -+#define CHAN_TX_BUF_SIZE_WRITE 0x4B -+#define CHAN_TSLOTSWITCH_ENABLE 0x4C -+#define CHAN_TSLOTSWITCH_DISABLE 0x4D -+ -+/* downloads the gainWord value for a timeslot switching channel associated -+ with bypassNum */ -+#define CHAN_TSLOTSWITCH_GCT_DOWNLOAD 0x4E -+ -+/* triggers the NPE to reset internal status and enable the HssPacketized -+ operation for the flow specified by pPipe */ -+#define PKT_PIPE_FLOW_ENABLE 0x50 -+#define PKT_PIPE_FLOW_DISABLE 0x51 -+#define PKT_NUM_PIPES_WRITE 0x52 -+#define PKT_PIPE_FIFO_SIZEW_WRITE 0x53 -+#define PKT_PIPE_HDLC_CFG_WRITE 0x54 -+#define PKT_PIPE_IDLE_PATTERN_WRITE 0x55 -+#define PKT_PIPE_RX_SIZE_WRITE 0x56 -+#define PKT_PIPE_MODE_WRITE 0x57 -+ -+/* HDLC packet status values - desc->status */ -+#define ERR_SHUTDOWN 1 /* stop or shutdown occurrance */ -+#define ERR_HDLC_ALIGN 2 /* HDLC alignment error */ -+#define ERR_HDLC_FCS 3 /* HDLC Frame Check Sum error */ -+#define ERR_RXFREE_Q_EMPTY 4 /* RX-free queue became empty while receiving -+ this packet (if buf_len < pkt_len) */ -+#define ERR_HDLC_TOO_LONG 5 /* HDLC frame size too long */ -+#define ERR_HDLC_ABORT 6 /* abort sequence received */ -+#define ERR_DISCONNECTING 7 /* disconnect is in progress */ -+ -+ -+#ifdef __ARMEB__ -+typedef struct sk_buff buffer_t; -+#define free_buffer dev_kfree_skb -+#define free_buffer_irq dev_kfree_skb_irq -+#else -+typedef void buffer_t; -+#define free_buffer kfree -+#define free_buffer_irq kfree -+#endif -+ -+struct port { -+ struct npe *npe; -+ struct net_device *netdev; -+ struct hss_plat_info *plat; -+ buffer_t *rx_buff_tab[RX_DESCS], *tx_buff_tab[TX_DESCS]; -+ struct desc *desc_tab; /* coherent */ -+ u32 desc_tab_phys; -+ int id; -+ unsigned int clock_type, clock_rate, loopback; -+ u8 hdlc_cfg; -+}; -+ -+/* NPE message structure */ -+struct msg { -+#ifdef __ARMEB__ -+ u8 cmd, unused, hss_port, index; -+ union { -+ struct { u8 data8a, data8b, data8c, data8d; }; -+ struct { u16 data16a, data16b; }; -+ struct { u32 data32; }; -+ }; -+#else -+ u8 index, hss_port, unused, cmd; -+ union { -+ struct { u8 data8d, data8c, data8b, data8a; }; -+ struct { u16 data16b, data16a; }; -+ struct { u32 data32; }; -+ }; -+#endif -+}; -+ -+/* HDLC packet descriptor */ -+struct desc { -+ u32 next; /* pointer to next buffer, unused */ -+ -+#ifdef __ARMEB__ -+ u16 buf_len; /* buffer length */ -+ u16 pkt_len; /* packet length */ -+ u32 data; /* pointer to data buffer in RAM */ -+ u8 status; -+ u8 error_count; -+ u16 __reserved; -+#else -+ u16 pkt_len; /* packet length */ -+ u16 buf_len; /* buffer length */ -+ u32 data; /* pointer to data buffer in RAM */ -+ u16 __reserved; -+ u8 error_count; -+ u8 status; -+#endif -+ u32 __reserved1[4]; -+}; -+ -+ -+#define rx_desc_phys(port, n) ((port)->desc_tab_phys + \ -+ (n) * sizeof(struct desc)) -+#define rx_desc_ptr(port, n) (&(port)->desc_tab[n]) -+ -+#define tx_desc_phys(port, n) ((port)->desc_tab_phys + \ -+ ((n) + RX_DESCS) * sizeof(struct desc)) -+#define tx_desc_ptr(port, n) (&(port)->desc_tab[(n) + RX_DESCS]) -+ -+/***************************************************************************** -+ * global variables -+ ****************************************************************************/ -+ -+static int ports_open; -+static struct dma_pool *dma_pool; -+ -+static const struct { -+ int tx, txdone, rx, rxfree; -+}queue_ids[2] = {{ HSS0_PKT_TX0_QUEUE, HSS0_PKT_TXDONE_QUEUE, -+ HSS0_PKT_RX_QUEUE, HSS0_PKT_RXFREE0_QUEUE }, -+ { HSS1_PKT_TX0_QUEUE, HSS1_PKT_TXDONE_QUEUE, -+ HSS1_PKT_RX_QUEUE, HSS1_PKT_RXFREE0_QUEUE }, -+}; -+ -+/***************************************************************************** -+ * utility functions -+ ****************************************************************************/ -+ -+static inline struct port* dev_to_port(struct net_device *dev) -+{ -+ return dev_to_hdlc(dev)->priv; -+} -+ -+#ifndef __ARMEB__ -+static inline void memcpy_swab32(u32 *dest, u32 *src, int cnt) -+{ -+ int i; -+ for (i = 0; i < cnt; i++) -+ dest[i] = swab32(src[i]); -+} -+#endif -+ -+static inline void debug_pkt(struct net_device *dev, const char *func, -+ u8 *data, int len) -+{ -+#if DEBUG_PKT_BYTES -+ int i; -+ -+ printk(KERN_DEBUG "%s: %s(%i) ", dev->name, func, len); -+ for (i = 0; i < len; i++) { -+ if (i >= DEBUG_PKT_BYTES) -+ break; -+ printk("%s%02X", !(i % 4) ? " " : "", data[i]); -+ } -+ printk("\n"); -+#endif -+} -+ -+ -+static inline void debug_desc(u32 phys, struct desc *desc) -+{ -+#if DEBUG_DESC -+ printk(KERN_DEBUG "%X: %X %3X %3X %08X %X %X\n", -+ phys, desc->next, desc->buf_len, desc->pkt_len, -+ desc->data, desc->status, desc->error_count); -+#endif -+} -+ -+static inline void debug_queue(unsigned int queue, int is_get, u32 phys) -+{ -+#if DEBUG_QUEUES -+ static struct { -+ int queue; -+ char *name; -+ } names[] = { -+ { HSS0_PKT_TX0_QUEUE, "TX#0 " }, -+ { HSS0_PKT_TXDONE_QUEUE, "TX-done#0 " }, -+ { HSS0_PKT_RX_QUEUE, "RX#0 " }, -+ { HSS0_PKT_RXFREE0_QUEUE, "RX-free#0 " }, -+ { HSS1_PKT_TX0_QUEUE, "TX#1 " }, -+ { HSS1_PKT_TXDONE_QUEUE, "TX-done#1 " }, -+ { HSS1_PKT_RX_QUEUE, "RX#1 " }, -+ { HSS1_PKT_RXFREE0_QUEUE, "RX-free#1 " }, -+ }; -+ int i; -+ -+ for (i = 0; i < ARRAY_SIZE(names); i++) -+ if (names[i].queue == queue) -+ break; -+ -+ printk(KERN_DEBUG "Queue %i %s%s %X\n", queue, -+ i < ARRAY_SIZE(names) ? names[i].name : "", -+ is_get ? "->" : "<-", phys); -+#endif -+} -+ -+static inline u32 queue_get_entry(unsigned int queue) -+{ -+ u32 phys = qmgr_get_entry(queue); -+ debug_queue(queue, 1, phys); -+ return phys; -+} -+ -+static inline int queue_get_desc(unsigned int queue, struct port *port, -+ int is_tx) -+{ -+ u32 phys, tab_phys, n_desc; -+ struct desc *tab; -+ -+ if (!(phys = queue_get_entry(queue))) -+ return -1; -+ -+ BUG_ON(phys & 0x1F); -+ tab_phys = is_tx ? tx_desc_phys(port, 0) : rx_desc_phys(port, 0); -+ tab = is_tx ? tx_desc_ptr(port, 0) : rx_desc_ptr(port, 0); -+ n_desc = (phys - tab_phys) / sizeof(struct desc); -+ BUG_ON(n_desc >= (is_tx ? TX_DESCS : RX_DESCS)); -+ debug_desc(phys, &tab[n_desc]); -+ BUG_ON(tab[n_desc].next); -+ return n_desc; -+} -+ -+static inline void queue_put_desc(unsigned int queue, u32 phys, -+ struct desc *desc) -+{ -+ debug_queue(queue, 0, phys); -+ debug_desc(phys, desc); -+ BUG_ON(phys & 0x1F); -+ qmgr_put_entry(queue, phys); -+ BUG_ON(qmgr_stat_overflow(queue)); -+} -+ -+ -+static inline void dma_unmap_tx(struct port *port, struct desc *desc) -+{ -+#ifdef __ARMEB__ -+ dma_unmap_single(&port->netdev->dev, desc->data, -+ desc->buf_len, DMA_TO_DEVICE); -+#else -+ dma_unmap_single(&port->netdev->dev, desc->data & ~3, -+ ALIGN((desc->data & 3) + desc->buf_len, 4), -+ DMA_TO_DEVICE); -+#endif -+} -+ -+ -+static void hss_hdlc_set_carrier(void *pdev, int carrier) -+{ -+ struct net_device *dev = pdev; -+ if (carrier) -+ netif_carrier_on(dev); -+ else -+ netif_carrier_off(dev); -+} -+ -+static void hss_hdlc_rx_irq(void *pdev) -+{ -+ struct net_device *dev = pdev; -+ struct port *port = dev_to_port(dev); -+ -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: hss_hdlc_rx_irq\n", dev->name); -+#endif -+ qmgr_disable_irq(queue_ids[port->id].rx); -+ netif_rx_schedule(dev); -+} -+ -+static int hss_hdlc_poll(struct net_device *dev, int *budget) -+{ -+ struct port *port = dev_to_port(dev); -+ unsigned int rxq = queue_ids[port->id].rx; -+ unsigned int rxfreeq = queue_ids[port->id].rxfree; -+ struct net_device_stats *stats = hdlc_stats(dev); -+ int quota = dev->quota, received = 0; -+ -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: hss_hdlc_poll\n", dev->name); -+#endif -+ -+ while (quota) { -+ struct sk_buff *skb; -+ struct desc *desc; -+ int n; -+#ifdef __ARMEB__ -+ struct sk_buff *temp; -+ u32 phys; -+#endif -+ -+ if ((n = queue_get_desc(rxq, port, 0)) < 0) { -+ dev->quota -= received; /* No packet received */ -+ *budget -= received; -+ received = 0; -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: hss_hdlc_poll" -+ " netif_rx_complete\n", dev->name); -+#endif -+ netif_rx_complete(dev); -+ qmgr_enable_irq(rxq); -+ if (!qmgr_stat_empty(rxq) && -+ netif_rx_reschedule(dev, 0)) { -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: hss_hdlc_poll" -+ " netif_rx_reschedule successed\n", -+ dev->name); -+#endif -+ qmgr_disable_irq(rxq); -+ continue; -+ } -+#if DEBUG_RX -+ printk(KERN_DEBUG "%s: hss_hdlc_poll all done\n", -+ dev->name); -+#endif -+ return 0; /* all work done */ -+ } -+ -+ desc = rx_desc_ptr(port, n); -+ -+ if (desc->error_count) /* FIXME - remove printk */ -+ printk(KERN_DEBUG "%s: hss_hdlc_poll status 0x%02X" -+ " errors %u\n", dev->name, desc->status, -+ desc->error_count); -+ -+ skb = NULL; -+ switch (desc->status) { -+ case 0: -+#ifdef __ARMEB__ -+ if ((skb = netdev_alloc_skb(dev, RX_SIZE)) != NULL) { -+ phys = dma_map_single(&dev->dev, skb->data, -+ RX_SIZE, -+ DMA_FROM_DEVICE); -+ if (dma_mapping_error(phys)) { -+ dev_kfree_skb(skb); -+ skb = NULL; -+ } -+ } -+#else -+ skb = netdev_alloc_skb(dev, desc->pkt_len); -+#endif -+ if (!skb) -+ stats->rx_dropped++; -+ break; -+ case ERR_HDLC_ALIGN: -+ case ERR_HDLC_ABORT: -+ stats->rx_frame_errors++; -+ stats->rx_errors++; -+ break; -+ case ERR_HDLC_FCS: -+ stats->rx_crc_errors++; -+ stats->rx_errors++; -+ break; -+ case ERR_HDLC_TOO_LONG: -+ stats->rx_length_errors++; -+ stats->rx_errors++; -+ break; -+ default: /* FIXME - remove printk */ -+ printk(KERN_ERR "%s: hss_hdlc_poll: status 0x%02X" -+ " errors %u\n", dev->name, desc->status, -+ desc->error_count); -+ stats->rx_errors++; -+ } -+ -+ if (!skb) { -+ /* put the desc back on RX-ready queue */ -+ desc->buf_len = RX_SIZE; -+ desc->pkt_len = desc->status = 0; -+ queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc); -+ continue; -+ } -+ -+ /* process received frame */ -+#ifdef __ARMEB__ -+ temp = skb; -+ skb = port->rx_buff_tab[n]; -+ dma_unmap_single(&dev->dev, desc->data, -+ RX_SIZE, DMA_FROM_DEVICE); -+#else -+ dma_sync_single(&dev->dev, desc->data, -+ RX_SIZE, DMA_FROM_DEVICE); -+ memcpy_swab32((u32 *)skb->data, (u32 *)port->rx_buff_tab[n], -+ ALIGN(desc->pkt_len, 4) / 4); -+#endif -+ skb_put(skb, desc->pkt_len); -+ -+ debug_pkt(dev, "hss_hdlc_poll", skb->data, skb->len); -+ -+ skb->protocol = hdlc_type_trans(skb, dev); -+ dev->last_rx = jiffies; -+ stats->rx_packets++; -+ stats->rx_bytes += skb->len; -+ netif_receive_skb(skb); -+ -+ /* put the new buffer on RX-free queue */ -+#ifdef __ARMEB__ -+ port->rx_buff_tab[n] = temp; -+ desc->data = phys; -+#endif -+ desc->buf_len = RX_SIZE; -+ desc->pkt_len = 0; -+ queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc); -+ quota--; -+ received++; -+ } -+ dev->quota -= received; -+ *budget -= received; -+#if DEBUG_RX -+ printk(KERN_DEBUG "hss_hdlc_poll: end, not all work done\n"); -+#endif -+ return 1; /* not all work done */ -+} -+ -+ -+static void hss_hdlc_txdone_irq(void *pdev) -+{ -+ struct net_device *dev = pdev; -+ struct port *port = dev_to_port(dev); -+ struct net_device_stats *stats = hdlc_stats(dev); -+ int n_desc; -+ -+#if DEBUG_TX -+ printk(KERN_DEBUG DRV_NAME ": hss_hdlc_txdone_irq\n"); -+#endif -+ while ((n_desc = queue_get_desc(queue_ids[port->id].txdone, -+ port, 1)) >= 0) { -+ struct desc *desc; -+ int start; -+ -+ desc = tx_desc_ptr(port, n_desc); -+ -+ stats->tx_packets++; -+ stats->tx_bytes += desc->pkt_len; -+ -+ dma_unmap_tx(port, desc); -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: hss_hdlc_txdone_irq free %p\n", -+ port->netdev->name, port->tx_buff_tab[n_desc]); -+#endif -+ free_buffer_irq(port->tx_buff_tab[n_desc]); -+ port->tx_buff_tab[n_desc] = NULL; -+ -+ start = qmgr_stat_empty(port->plat->txreadyq); -+ queue_put_desc(port->plat->txreadyq, -+ tx_desc_phys(port, n_desc), desc); -+ if (start) { -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: hss_hdlc_txdone_irq xmit" -+ " ready\n", port->netdev->name); -+#endif -+ netif_wake_queue(port->netdev); -+ } -+ } -+} -+ -+static int hss_hdlc_xmit(struct sk_buff *skb, struct net_device *dev) -+{ -+ struct port *port = dev_to_port(dev); -+ struct net_device_stats *stats = hdlc_stats(dev); -+ unsigned int txreadyq = port->plat->txreadyq; -+ int len, offset, bytes, n; -+ void *mem; -+ u32 phys; -+ struct desc *desc; -+ -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: hss_hdlc_xmit\n", dev->name); -+#endif -+ -+ if (unlikely(skb->len > HDLC_MAX_MRU)) { -+ dev_kfree_skb(skb); -+ stats->tx_errors++; -+ return NETDEV_TX_OK; -+ } -+ -+ debug_pkt(dev, "hss_hdlc_xmit", skb->data, skb->len); -+ -+ len = skb->len; -+#ifdef __ARMEB__ -+ offset = 0; /* no need to keep alignment */ -+ bytes = len; -+ mem = skb->data; -+#else -+ offset = (int)skb->data & 3; /* keep 32-bit alignment */ -+ bytes = ALIGN(offset + len, 4); -+ if (!(mem = kmalloc(bytes, GFP_ATOMIC))) { -+ dev_kfree_skb(skb); -+ stats->tx_dropped++; -+ return NETDEV_TX_OK; -+ } -+ memcpy_swab32(mem, (u32 *)((int)skb->data & ~3), bytes / 4); -+ dev_kfree_skb(skb); -+#endif -+ -+ phys = dma_map_single(&dev->dev, mem, bytes, DMA_TO_DEVICE); -+ if (dma_mapping_error(phys)) { -+#ifdef __ARMEB__ -+ dev_kfree_skb(skb); -+#else -+ kfree(mem); -+#endif -+ stats->tx_dropped++; -+ return NETDEV_TX_OK; -+ } -+ -+ n = queue_get_desc(txreadyq, port, 1); -+ BUG_ON(n < 0); -+ desc = tx_desc_ptr(port, n); -+ -+#ifdef __ARMEB__ -+ port->tx_buff_tab[n] = skb; -+#else -+ port->tx_buff_tab[n] = mem; -+#endif -+ desc->data = phys + offset; -+ desc->buf_len = desc->pkt_len = len; -+ -+ wmb(); -+ queue_put_desc(queue_ids[port->id].tx, tx_desc_phys(port, n), desc); -+ dev->trans_start = jiffies; -+ -+ if (qmgr_stat_empty(txreadyq)) { -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: hss_hdlc_xmit queue full\n", dev->name); -+#endif -+ netif_stop_queue(dev); -+ /* we could miss TX ready interrupt */ -+ if (!qmgr_stat_empty(txreadyq)) { -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: hss_hdlc_xmit ready again\n", -+ dev->name); -+#endif -+ netif_wake_queue(dev); -+ } -+ } -+ -+#if DEBUG_TX -+ printk(KERN_DEBUG "%s: hss_hdlc_xmit end\n", dev->name); -+#endif -+ return NETDEV_TX_OK; -+} -+ -+ -+static int request_hdlc_queues(struct port *port) -+{ -+ int err; -+ -+ err = qmgr_request_queue(queue_ids[port->id].rxfree, RX_DESCS, 0, 0); -+ if (err) -+ return err; -+ -+ err = qmgr_request_queue(queue_ids[port->id].rx, RX_DESCS, 0, 0); -+ if (err) -+ goto rel_rxfree; -+ -+ err = qmgr_request_queue(queue_ids[port->id].tx, TX_DESCS, 0, 0); -+ if (err) -+ goto rel_rx; -+ -+ err = qmgr_request_queue(port->plat->txreadyq, TX_DESCS, 0, 0); -+ if (err) -+ goto rel_tx; -+ -+ err = qmgr_request_queue(queue_ids[port->id].txdone, TX_DESCS, 0, 0); -+ if (err) -+ goto rel_txready; -+ return 0; -+ -+rel_txready: -+ qmgr_release_queue(port->plat->txreadyq); -+rel_tx: -+ qmgr_release_queue(queue_ids[port->id].tx); -+rel_rx: -+ qmgr_release_queue(queue_ids[port->id].rx); -+rel_rxfree: -+ qmgr_release_queue(queue_ids[port->id].rxfree); -+ printk(KERN_DEBUG "%s: unable to request hardware queues\n", -+ port->netdev->name); -+ return err; -+} -+ -+static void release_hdlc_queues(struct port *port) -+{ -+ qmgr_release_queue(queue_ids[port->id].rxfree); -+ qmgr_release_queue(queue_ids[port->id].rx); -+ qmgr_release_queue(queue_ids[port->id].txdone); -+ qmgr_release_queue(queue_ids[port->id].tx); -+ qmgr_release_queue(port->plat->txreadyq); -+} -+ -+static int init_hdlc_queues(struct port *port) -+{ -+ int i; -+ -+ if (!ports_open) -+ if (!(dma_pool = dma_pool_create(DRV_NAME, NULL, -+ POOL_ALLOC_SIZE, 32, 0))) -+ return -ENOMEM; -+ -+ if (!(port->desc_tab = dma_pool_alloc(dma_pool, GFP_KERNEL, -+ &port->desc_tab_phys))) -+ return -ENOMEM; -+ memset(port->desc_tab, 0, POOL_ALLOC_SIZE); -+ memset(port->rx_buff_tab, 0, sizeof(port->rx_buff_tab)); /* tables */ -+ memset(port->tx_buff_tab, 0, sizeof(port->tx_buff_tab)); -+ -+ /* Setup RX buffers */ -+ for (i = 0; i < RX_DESCS; i++) { -+ struct desc *desc = rx_desc_ptr(port, i); -+ buffer_t *buff; -+ void *data; -+#ifdef __ARMEB__ -+ if (!(buff = netdev_alloc_skb(port->netdev, RX_SIZE))) -+ return -ENOMEM; -+ data = buff->data; -+#else -+ if (!(buff = kmalloc(RX_SIZE, GFP_KERNEL))) -+ return -ENOMEM; -+ data = buff; -+#endif -+ desc->buf_len = RX_SIZE; -+ desc->data = dma_map_single(&port->netdev->dev, data, -+ RX_SIZE, DMA_FROM_DEVICE); -+ if (dma_mapping_error(desc->data)) { -+ free_buffer(buff); -+ return -EIO; -+ } -+ port->rx_buff_tab[i] = buff; -+ } -+ -+ return 0; -+} -+ -+static void destroy_hdlc_queues(struct port *port) -+{ -+ int i; -+ -+ if (port->desc_tab) { -+ for (i = 0; i < RX_DESCS; i++) { -+ struct desc *desc = rx_desc_ptr(port, i); -+ buffer_t *buff = port->rx_buff_tab[i]; -+ if (buff) { -+ dma_unmap_single(&port->netdev->dev, -+ desc->data, RX_SIZE, -+ DMA_FROM_DEVICE); -+ free_buffer(buff); -+ } -+ } -+ for (i = 0; i < TX_DESCS; i++) { -+ struct desc *desc = tx_desc_ptr(port, i); -+ buffer_t *buff = port->tx_buff_tab[i]; -+ if (buff) { -+ dma_unmap_tx(port, desc); -+ free_buffer(buff); -+ } -+ } -+ dma_pool_free(dma_pool, port->desc_tab, port->desc_tab_phys); -+ port->desc_tab = NULL; -+ } -+ -+ if (!ports_open && dma_pool) { -+ dma_pool_destroy(dma_pool); -+ dma_pool = NULL; -+ } -+} -+ -+static int hss_hdlc_open(struct net_device *dev) -+{ -+ struct port *port = dev_to_port(dev); -+ struct npe *npe = port->npe; -+ struct msg msg; -+ int i, err; -+ -+ if (!npe_running(npe)) { -+ err = npe_load_firmware(npe, npe_name(npe), &dev->dev); -+ if (err) -+ return err; -+ } -+ -+ if ((err = hdlc_open(dev)) != 0) -+ return err; -+ -+ if (port->plat->open) -+ if ((err = port->plat->open(port->id, port->netdev, -+ hss_hdlc_set_carrier)) != 0) -+ goto err_hdlc_close; -+ -+ /* HSS main configuration */ -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PORT_CONFIG_WRITE; -+ msg.hss_port = port->id; -+ msg.index = 0; /* offset in HSS config */ -+ -+ msg.data32 = PCR_FRM_PULSE_DISABLED | -+ PCR_SOF_NO_FBIT | -+ PCR_MSB_ENDIAN | -+ PCR_TX_DATA_ENABLE; -+ -+ if (port->clock_type == CLOCK_INT) -+ msg.data32 |= PCR_SYNC_CLK_DIR_OUTPUT; -+ -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_TX_PCR") != 0)) -+ goto err_plat_close; /* 0: TX PCR */ -+ -+ msg.index = 4; -+ msg.data32 ^= PCR_TX_DATA_ENABLE | PCR_DCLK_EDGE_RISING; -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_RX_PCR") != 0)) -+ goto err_plat_close; /* 4: RX PCR */ -+ -+ msg.index = 8; -+ msg.data32 = (port->loopback ? CCR_LOOPBACK : 0) | -+ (port->id ? CCR_SECOND_HSS : 0); -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_CORE_CR") != 0)) -+ goto err_plat_close; /* 8: Core CR */ -+ -+ msg.index = 12; -+ msg.data32 = CLK42X_SPEED_2048KHZ /* FIXME */; -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_CLK_CR") != 0)) -+ goto err_plat_close; /* 12: CLK CR */ -+ -+ msg.data32 = (FRAME_SYNC_OFFSET << 16) | (FRAME_SYNC_SIZE - 1); -+ msg.index = 16; -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_TX_FCR") != 0)) -+ goto err_plat_close; /* 16: TX FCR */ -+ -+ msg.index = 20; -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_RX_FCR") != 0)) -+ goto err_plat_close; /* 20: RX FCR */ -+ -+ msg.data32 = 0; /* Fill LUT with HDLC timeslots */ -+ for (i = 0; i < 32 / LUT_BITS; i++) -+ msg.data32 |= TDMMAP_HDLC << (LUT_BITS * i); -+ -+ for (i = 0; i < 2 /* TX and RX */ * TIMESLOTS * LUT_BITS / 8; i += 4) { -+ msg.index = 24 + i; /* 24 - 55: TX LUT, 56 - 87: RX LUT */ -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_LUT") != 0)) -+ goto err_plat_close; -+ } -+ -+ /* HDLC mode configuration */ -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PKT_NUM_PIPES_WRITE; -+ msg.hss_port = port->id; -+ msg.data8a = PKT_NUM_PIPES; -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_PKT_PIPES") != 0)) -+ goto err_plat_close; -+ -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PKT_PIPE_FIFO_SIZEW_WRITE; -+ msg.hss_port = port->id; -+ msg.data8a = PKT_PIPE_FIFO_SIZEW; -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_PKT_FIFO") != 0)) -+ goto err_plat_close; -+ -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PKT_PIPE_IDLE_PATTERN_WRITE; -+ msg.hss_port = port->id; -+ msg.data32 = 0x7F7F7F7F; -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_PKT_IDLE") != 0)) -+ goto err_plat_close; -+ -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PORT_CONFIG_LOAD; -+ msg.hss_port = port->id; -+ if ((err = npe_send_message(npe, &msg, "HSS_LOAD_CONFIG") != 0)) -+ goto err_plat_close; -+ if ((err = npe_recv_message(npe, &msg, "HSS_LOAD_CONFIG") != 0)) -+ goto err_plat_close; -+ -+ /* HSS_LOAD_CONFIG for port #1 returns port_id = #4 */ -+ if (msg.cmd != PORT_CONFIG_LOAD || msg.data32) { -+ printk(KERN_DEBUG "%s: unexpected message received in" -+ " response to HSS_LOAD_CONFIG\n", npe_name(npe)); -+ err = EIO; -+ goto err_plat_close; -+ } -+ -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PKT_PIPE_HDLC_CFG_WRITE; -+ msg.hss_port = port->id; -+ msg.data8a = port->hdlc_cfg; /* rx_cfg */ -+ msg.data8b = port->hdlc_cfg | (PKT_EXTRA_FLAGS << 3); /* tx_cfg */ -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_HDLC_CFG") != 0)) -+ goto err_plat_close; -+ -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PKT_PIPE_MODE_WRITE; -+ msg.hss_port = port->id; -+ msg.data8a = NPE_PKT_MODE_HDLC; -+ /* msg.data8b = inv_mask */ -+ /* msg.data8c = or_mask */ -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_PKT_MODE") != 0)) -+ goto err_plat_close; -+ -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PKT_PIPE_RX_SIZE_WRITE; -+ msg.hss_port = port->id; -+ msg.data16a = HDLC_MAX_MRU; -+ if ((err = npe_send_message(npe, &msg, "HSS_SET_PKT_RX_SIZE") != 0)) -+ goto err_plat_close; -+ -+ if ((err = request_hdlc_queues(port)) != 0) -+ goto err_plat_close; -+ -+ if ((err = init_hdlc_queues(port)) != 0) -+ goto err_destroy_queues; -+ -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PKT_PIPE_FLOW_ENABLE; -+ msg.hss_port = port->id; -+ if ((err = npe_send_message(npe, &msg, "HSS_ENABLE_PKT_PIPE") != 0)) -+ goto err_destroy_queues; -+ -+ /* Populate queues with buffers, no failure after this point */ -+ for (i = 0; i < TX_DESCS; i++) -+ queue_put_desc(port->plat->txreadyq, -+ tx_desc_phys(port, i), tx_desc_ptr(port, i)); -+ -+ for (i = 0; i < RX_DESCS; i++) -+ queue_put_desc(queue_ids[port->id].rxfree, -+ rx_desc_phys(port, i), rx_desc_ptr(port, i)); -+ -+ netif_start_queue(dev); -+ -+ qmgr_set_irq(queue_ids[port->id].rx, QUEUE_IRQ_SRC_NOT_EMPTY, -+ hss_hdlc_rx_irq, dev); -+ -+ qmgr_set_irq(queue_ids[port->id].txdone, QUEUE_IRQ_SRC_NOT_EMPTY, -+ hss_hdlc_txdone_irq, dev); -+ qmgr_enable_irq(queue_ids[port->id].txdone); -+ -+ ports_open++; -+ netif_rx_schedule(dev); /* we may already have RX data, enables IRQ */ -+ return 0; -+ -+err_destroy_queues: -+ destroy_hdlc_queues(port); -+ release_hdlc_queues(port); -+err_plat_close: -+ if (port->plat->close) -+ port->plat->close(port->id, port->netdev); -+err_hdlc_close: -+ hdlc_close(dev); -+ return err; -+} -+ -+static int hss_hdlc_close(struct net_device *dev) -+{ -+ struct port *port = dev_to_port(dev); -+ struct npe *npe = port->npe; -+ struct msg msg; -+ int buffs = RX_DESCS; /* allocated RX buffers */ -+ int i; -+ -+ ports_open--; -+ qmgr_disable_irq(queue_ids[port->id].rx); -+ netif_stop_queue(dev); -+ -+ memset(&msg, 0, sizeof(msg)); -+ msg.cmd = PKT_PIPE_FLOW_DISABLE; -+ msg.hss_port = port->id; -+ if (npe_send_message(npe, &msg, "HSS_DISABLE_PKT_PIPE")) { -+ printk(KERN_CRIT "HSS-%i: unable to stop HDLC flow\n", -+ port->id); -+ /* The upper level would ignore the error anyway */ -+ } -+ -+ while (queue_get_desc(queue_ids[port->id].rxfree, port, 0) >= 0) -+ buffs--; -+ while (queue_get_desc(queue_ids[port->id].rx, port, 0) >= 0) -+ buffs--; -+ -+ if (buffs) -+ printk(KERN_CRIT "%s: unable to drain RX queue, %i buffer(s)" -+ " left in NPE\n", dev->name, buffs); -+ -+ buffs = TX_DESCS; -+ while (queue_get_desc(queue_ids[port->id].tx, port, 1) >= 0) -+ buffs--; /* cancel TX */ -+ -+ i = 0; -+ do { -+ while (queue_get_desc(port->plat->txreadyq, port, 1) >= 0) -+ buffs--; -+ if (!buffs) -+ break; -+ } while (++i < MAX_CLOSE_WAIT); -+ -+ if (buffs) -+ printk(KERN_CRIT "%s: unable to drain TX queue, %i buffer(s) " -+ "left in NPE\n", dev->name, buffs); -+#if DEBUG_CLOSE -+ if (!buffs) -+ printk(KERN_DEBUG "Draining TX queues took %i cycles\n", i); -+#endif -+ qmgr_disable_irq(queue_ids[port->id].txdone); -+ destroy_hdlc_queues(port); -+ release_hdlc_queues(port); -+ -+ if (port->plat->close) -+ port->plat->close(port->id, port->netdev); -+ hdlc_close(dev); -+ return 0; -+} -+ -+ -+static int hss_hdlc_attach(struct net_device *dev, unsigned short encoding, -+ unsigned short parity) -+{ -+ struct port *port = dev_to_port(dev); -+ -+ if (encoding != ENCODING_NRZ) -+ return -EINVAL; -+ -+ switch(parity) { -+ case PARITY_CRC16_PR1_CCITT: -+ port->hdlc_cfg = 0; -+ return 0; -+ -+ case PARITY_CRC32_PR1_CCITT: -+ port->hdlc_cfg = PKT_HDLC_CRC_32; -+ return 0; -+ -+ default: -+ return -EINVAL; -+ } -+} -+ -+ -+static int hss_hdlc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) -+{ -+ const size_t size = sizeof(sync_serial_settings); -+ sync_serial_settings new_line; -+ int clk; -+ sync_serial_settings __user *line = ifr->ifr_settings.ifs_ifsu.sync; -+ struct port *port = dev_to_port(dev); -+ -+ if (cmd != SIOCWANDEV) -+ return hdlc_ioctl(dev, ifr, cmd); -+ -+ switch(ifr->ifr_settings.type) { -+ case IF_GET_IFACE: -+ ifr->ifr_settings.type = IF_IFACE_V35; -+ if (ifr->ifr_settings.size < size) { -+ ifr->ifr_settings.size = size; /* data size wanted */ -+ return -ENOBUFS; -+ } -+ memset(&new_line, 0, sizeof(new_line)); -+ new_line.clock_type = port->clock_type; -+ new_line.clock_rate = port->clock_rate; -+ new_line.loopback = port->loopback; -+ if (copy_to_user(line, &new_line, size)) -+ return -EFAULT; -+ return 0; -+ -+ case IF_IFACE_SYNC_SERIAL: -+ case IF_IFACE_V35: -+ if(!capable(CAP_NET_ADMIN)) -+ return -EPERM; -+ if (dev->flags & IFF_UP) -+ return -EBUSY; /* Cannot change parameters when open */ -+ -+ if (copy_from_user(&new_line, line, size)) -+ return -EFAULT; -+ -+ clk = new_line.clock_type; -+ if (port->plat->set_clock) -+ clk = port->plat->set_clock(port->id, clk); -+ -+ if (clk != CLOCK_EXT && clk != CLOCK_INT) -+ return -EINVAL; /* No such clock setting */ -+ -+ if (new_line.loopback != 0 && new_line.loopback != 1) -+ return -EINVAL; -+ -+ port->clock_type = clk; /* Update settings */ -+ port->clock_rate = new_line.clock_rate; -+ port->loopback = new_line.loopback; -+ return 0; -+ -+ default: -+ return hdlc_ioctl(dev, ifr, cmd); -+ } -+} -+ -+ -+static int __devinit hss_init_one(struct platform_device *pdev) -+{ -+ struct port *port; -+ struct net_device *dev; -+ hdlc_device *hdlc; -+ int err; -+ -+ if ((port = kzalloc(sizeof(*port), GFP_KERNEL)) == NULL) -+ return -ENOMEM; -+ platform_set_drvdata(pdev, port); -+ port->id = pdev->id; -+ -+ if ((port->npe = npe_request(0)) == NULL) { -+ err = -ENOSYS; -+ goto err_free; -+ } -+ -+ port->plat = pdev->dev.platform_data; -+ if ((port->netdev = dev = alloc_hdlcdev(port)) == NULL) { -+ err = -ENOMEM; -+ goto err_plat; -+ } -+ -+ SET_MODULE_OWNER(net); -+ SET_NETDEV_DEV(dev, &pdev->dev); -+ hdlc = dev_to_hdlc(dev); -+ hdlc->attach = hss_hdlc_attach; -+ hdlc->xmit = hss_hdlc_xmit; -+ dev->open = hss_hdlc_open; -+ dev->poll = hss_hdlc_poll; -+ dev->stop = hss_hdlc_close; -+ dev->do_ioctl = hss_hdlc_ioctl; -+ dev->weight = 16; -+ dev->tx_queue_len = 100; -+ port->clock_type = CLOCK_EXT; -+ port->clock_rate = 2048000; -+ -+ if (register_hdlc_device(dev)) { -+ printk(KERN_ERR "HSS-%i: unable to register HDLC device\n", -+ port->id); -+ err = -ENOBUFS; -+ goto err_free_netdev; -+ } -+ printk(KERN_INFO "%s: HSS-%i\n", dev->name, port->id); -+ return 0; -+ -+err_free_netdev: -+ free_netdev(dev); -+err_plat: -+ npe_release(port->npe); -+ platform_set_drvdata(pdev, NULL); -+err_free: -+ kfree(port); -+ return err; -+} -+ -+static int __devexit hss_remove_one(struct platform_device *pdev) -+{ -+ struct port *port = platform_get_drvdata(pdev); -+ -+ unregister_hdlc_device(port->netdev); -+ free_netdev(port->netdev); -+ npe_release(port->npe); -+ platform_set_drvdata(pdev, NULL); -+ kfree(port); -+ return 0; -+} -+ -+static struct platform_driver drv = { -+ .driver.name = DRV_NAME, -+ .probe = hss_init_one, -+ .remove = hss_remove_one, -+}; -+ -+static int __init hss_init_module(void) -+{ -+ if ((ixp4xx_read_feature_bits() & -+ (IXP4XX_FEATURE_HDLC | IXP4XX_FEATURE_HSS)) != -+ (IXP4XX_FEATURE_HDLC | IXP4XX_FEATURE_HSS)) -+ return -ENOSYS; -+ return platform_driver_register(&drv); -+} -+ -+static void __exit hss_cleanup_module(void) -+{ -+ platform_driver_unregister(&drv); -+} -+ -+MODULE_AUTHOR("Krzysztof Halasa"); -+MODULE_DESCRIPTION("Intel IXP4xx HSS driver"); -+MODULE_LICENSE("GPL v2"); -+module_init(hss_init_module); -+module_exit(hss_cleanup_module); -Index: linux-2.6.23.17/include/asm-arm/arch-ixp4xx/cpu.h -=================================================================== ---- linux-2.6.23.17.orig/include/asm-arm/arch-ixp4xx/cpu.h -+++ linux-2.6.23.17/include/asm-arm/arch-ixp4xx/cpu.h -@@ -28,4 +28,19 @@ extern unsigned int processor_id; - #define cpu_is_ixp46x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \ - IXP465_PROCESSOR_ID_VALUE) - -+static inline u32 ixp4xx_read_feature_bits(void) -+{ -+ unsigned int val = ~*IXP4XX_EXP_CFG2; -+ val &= ~IXP4XX_FEATURE_RESERVED; -+ if (!cpu_is_ixp46x()) -+ val &= ~IXP4XX_FEATURE_IXP46X_ONLY; -+ -+ return val; -+} -+ -+static inline void ixp4xx_write_feature_bits(u32 value) -+{ -+ *IXP4XX_EXP_CFG2 = ~value; -+} -+ - #endif /* _ASM_ARCH_CPU_H */ -Index: linux-2.6.23.17/include/asm-arm/arch-ixp4xx/hardware.h -=================================================================== ---- linux-2.6.23.17.orig/include/asm-arm/arch-ixp4xx/hardware.h -+++ linux-2.6.23.17/include/asm-arm/arch-ixp4xx/hardware.h -@@ -27,13 +27,13 @@ - - #define pcibios_assign_all_busses() 1 - -+/* Register locations and bits */ -+#include "ixp4xx-regs.h" -+ - #ifndef __ASSEMBLER__ - #include <asm/arch/cpu.h> - #endif - --/* Register locations and bits */ --#include "ixp4xx-regs.h" -- - /* Platform helper functions and definitions */ - #include "platform.h" - -Index: linux-2.6.23.17/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h -=================================================================== ---- linux-2.6.23.17.orig/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h -+++ linux-2.6.23.17/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h -@@ -15,10 +15,6 @@ - * - */ - --#ifndef __ASM_ARCH_HARDWARE_H__ --#error "Do not include this directly, instead #include <asm/hardware.h>" --#endif -- - #ifndef _ASM_ARM_IXP4XX_H_ - #define _ASM_ARM_IXP4XX_H_ - -@@ -607,4 +603,36 @@ - - #define DCMD_LENGTH 0x01fff /* length mask (max = 8K - 1) */ - -+/* "fuse" bits of IXP_EXP_CFG2 */ -+#define IXP4XX_FEATURE_RCOMP (1 << 0) -+#define IXP4XX_FEATURE_USB_DEVICE (1 << 1) -+#define IXP4XX_FEATURE_HASH (1 << 2) -+#define IXP4XX_FEATURE_AES (1 << 3) -+#define IXP4XX_FEATURE_DES (1 << 4) -+#define IXP4XX_FEATURE_HDLC (1 << 5) -+#define IXP4XX_FEATURE_AAL (1 << 6) -+#define IXP4XX_FEATURE_HSS (1 << 7) -+#define IXP4XX_FEATURE_UTOPIA (1 << 8) -+#define IXP4XX_FEATURE_NPEB_ETH0 (1 << 9) -+#define IXP4XX_FEATURE_NPEC_ETH (1 << 10) -+#define IXP4XX_FEATURE_RESET_NPEA (1 << 11) -+#define IXP4XX_FEATURE_RESET_NPEB (1 << 12) -+#define IXP4XX_FEATURE_RESET_NPEC (1 << 13) -+#define IXP4XX_FEATURE_PCI (1 << 14) -+#define IXP4XX_FEATURE_ECC_TIMESYNC (1 << 15) -+#define IXP4XX_FEATURE_UTOPIA_PHY_LIMIT (3 << 16) -+#define IXP4XX_FEATURE_USB_HOST (1 << 18) -+#define IXP4XX_FEATURE_NPEA_ETH (1 << 19) -+#define IXP4XX_FEATURE_NPEB_ETH_1_TO_3 (1 << 20) -+#define IXP4XX_FEATURE_RSA (1 << 21) -+#define IXP4XX_FEATURE_XSCALE_MAX_FREQ (3 << 22) -+#define IXP4XX_FEATURE_RESERVED (0xFF << 24) -+ -+#define IXP4XX_FEATURE_IXP46X_ONLY (IXP4XX_FEATURE_ECC_TIMESYNC | \ -+ IXP4XX_FEATURE_USB_HOST | \ -+ IXP4XX_FEATURE_NPEA_ETH | \ -+ IXP4XX_FEATURE_NPEB_ETH_1_TO_3 | \ -+ IXP4XX_FEATURE_RSA | \ -+ IXP4XX_FEATURE_XSCALE_MAX_FREQ) -+ - #endif -Index: linux-2.6.23.17/include/asm-arm/arch-ixp4xx/npe.h -=================================================================== ---- /dev/null -+++ linux-2.6.23.17/include/asm-arm/arch-ixp4xx/npe.h -@@ -0,0 +1,39 @@ -+#ifndef __IXP4XX_NPE_H -+#define __IXP4XX_NPE_H -+ -+#include <linux/kernel.h> -+ -+extern const char *npe_names[]; -+ -+struct npe_regs { -+ u32 exec_addr, exec_data, exec_status_cmd, exec_count; -+ u32 action_points[4]; -+ u32 watchpoint_fifo, watch_count; -+ u32 profile_count; -+ u32 messaging_status, messaging_control; -+ u32 mailbox_status, /*messaging_*/ in_out_fifo; -+}; -+ -+struct npe { -+ struct resource *mem_res; -+ struct npe_regs __iomem *regs; -+ u32 regs_phys; -+ int id; -+ int valid; -+}; -+ -+ -+static inline const char *npe_name(struct npe *npe) -+{ -+ return npe_names[npe->id]; -+} -+ -+int npe_running(struct npe *npe); -+int npe_send_message(struct npe *npe, const void *msg, const char *what); -+int npe_recv_message(struct npe *npe, void *msg, const char *what); -+int npe_send_recv_message(struct npe *npe, void *msg, const char *what); -+int npe_load_firmware(struct npe *npe, const char *name, struct device *dev); -+struct npe *npe_request(int id); -+void npe_release(struct npe *npe); -+ -+#endif /* __IXP4XX_NPE_H */ -Index: linux-2.6.23.17/include/asm-arm/arch-ixp4xx/platform.h -=================================================================== ---- linux-2.6.23.17.orig/include/asm-arm/arch-ixp4xx/platform.h -+++ linux-2.6.23.17/include/asm-arm/arch-ixp4xx/platform.h -@@ -77,8 +77,7 @@ extern unsigned long ixp4xx_exp_bus_size - - /* - * The IXP4xx chips do not have an I2C unit, so GPIO lines are just -- * used to -- * Used as platform_data to provide GPIO pin information to the ixp42x -+ * used as platform_data to provide GPIO pin information to the ixp42x - * I2C driver. - */ - struct ixp4xx_i2c_pins { -@@ -86,6 +85,27 @@ struct ixp4xx_i2c_pins { - unsigned long scl_pin; - }; - -+#define IXP4XX_ETH_NPEA 0x00 -+#define IXP4XX_ETH_NPEB 0x10 -+#define IXP4XX_ETH_NPEC 0x20 -+ -+/* Information about built-in Ethernet MAC interfaces */ -+struct eth_plat_info { -+ u8 phy; /* MII PHY ID, 0 - 31 */ -+ u8 rxq; /* configurable, currently 0 - 31 only */ -+ u8 txreadyq; -+ u8 hwaddr[6]; -+}; -+ -+/* Information about built-in HSS (synchronous serial) interfaces */ -+struct hss_plat_info { -+ int (*set_clock)(int port, unsigned int clock_type); -+ int (*open)(int port, void *pdev, -+ void (*set_carrier_cb)(void *pdev, int carrier)); -+ void (*close)(int port, void *pdev); -+ u8 txreadyq; -+}; -+ - /* - * This structure provide a means for the board setup code - * to give information to th pata_ixp4xx driver. It is -Index: linux-2.6.23.17/include/asm-arm/arch-ixp4xx/qmgr.h -=================================================================== ---- /dev/null -+++ linux-2.6.23.17/include/asm-arm/arch-ixp4xx/qmgr.h -@@ -0,0 +1,126 @@ -+/* -+ * Copyright (C) 2007 Krzysztof Halasa <khc@pm.waw.pl> -+ * -+ * This program is free software; you can redistribute it and/or modify it -+ * under the terms of version 2 of the GNU General Public License -+ * as published by the Free Software Foundation. -+ */ -+ -+#ifndef IXP4XX_QMGR_H -+#define IXP4XX_QMGR_H -+ -+#include <linux/io.h> -+#include <linux/kernel.h> -+ -+#define HALF_QUEUES 32 -+#define QUEUES 64 /* only 32 lower queues currently supported */ -+#define MAX_QUEUE_LENGTH 4 /* in dwords */ -+ -+#define QUEUE_STAT1_EMPTY 1 /* queue status bits */ -+#define QUEUE_STAT1_NEARLY_EMPTY 2 -+#define QUEUE_STAT1_NEARLY_FULL 4 -+#define QUEUE_STAT1_FULL 8 -+#define QUEUE_STAT2_UNDERFLOW 1 -+#define QUEUE_STAT2_OVERFLOW 2 -+ -+#define QUEUE_WATERMARK_0_ENTRIES 0 -+#define QUEUE_WATERMARK_1_ENTRY 1 -+#define QUEUE_WATERMARK_2_ENTRIES 2 -+#define QUEUE_WATERMARK_4_ENTRIES 3 -+#define QUEUE_WATERMARK_8_ENTRIES 4 -+#define QUEUE_WATERMARK_16_ENTRIES 5 -+#define QUEUE_WATERMARK_32_ENTRIES 6 -+#define QUEUE_WATERMARK_64_ENTRIES 7 -+ -+/* queue interrupt request conditions */ -+#define QUEUE_IRQ_SRC_EMPTY 0 -+#define QUEUE_IRQ_SRC_NEARLY_EMPTY 1 -+#define QUEUE_IRQ_SRC_NEARLY_FULL 2 -+#define QUEUE_IRQ_SRC_FULL 3 -+#define QUEUE_IRQ_SRC_NOT_EMPTY 4 -+#define QUEUE_IRQ_SRC_NOT_NEARLY_EMPTY 5 -+#define QUEUE_IRQ_SRC_NOT_NEARLY_FULL 6 -+#define QUEUE_IRQ_SRC_NOT_FULL 7 -+ -+struct qmgr_regs { -+ u32 acc[QUEUES][MAX_QUEUE_LENGTH]; /* 0x000 - 0x3FF */ -+ u32 stat1[4]; /* 0x400 - 0x40F */ -+ u32 stat2[2]; /* 0x410 - 0x417 */ -+ u32 statne_h; /* 0x418 - queue nearly empty */ -+ u32 statf_h; /* 0x41C - queue full */ -+ u32 irqsrc[4]; /* 0x420 - 0x42F IRC source */ -+ u32 irqen[2]; /* 0x430 - 0x437 IRQ enabled */ -+ u32 irqstat[2]; /* 0x438 - 0x43F - IRQ access only */ -+ u32 reserved[1776]; -+ u32 sram[2048]; /* 0x2000 - 0x3FFF - config and buffer */ -+}; -+ -+void qmgr_set_irq(unsigned int queue, int src, -+ void (*handler)(void *pdev), void *pdev); -+void qmgr_enable_irq(unsigned int queue); -+void qmgr_disable_irq(unsigned int queue); -+ -+/* request_ and release_queue() must be called from non-IRQ context */ -+int qmgr_request_queue(unsigned int queue, unsigned int len /* dwords */, -+ unsigned int nearly_empty_watermark, -+ unsigned int nearly_full_watermark); -+void qmgr_release_queue(unsigned int queue); -+ -+ -+static inline void qmgr_put_entry(unsigned int queue, u32 val) -+{ -+ extern struct qmgr_regs __iomem *qmgr_regs; -+ __raw_writel(val, &qmgr_regs->acc[queue][0]); -+} -+ -+static inline u32 qmgr_get_entry(unsigned int queue) -+{ -+ extern struct qmgr_regs __iomem *qmgr_regs; -+ return __raw_readl(&qmgr_regs->acc[queue][0]); -+} -+ -+static inline int qmgr_get_stat1(unsigned int queue) -+{ -+ extern struct qmgr_regs __iomem *qmgr_regs; -+ return (__raw_readl(&qmgr_regs->stat1[queue >> 3]) -+ >> ((queue & 7) << 2)) & 0xF; -+} -+ -+static inline int qmgr_get_stat2(unsigned int queue) -+{ -+ extern struct qmgr_regs __iomem *qmgr_regs; -+ return (__raw_readl(&qmgr_regs->stat2[queue >> 4]) -+ >> ((queue & 0xF) << 1)) & 0x3; -+} -+ -+static inline int qmgr_stat_empty(unsigned int queue) -+{ -+ return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_EMPTY); -+} -+ -+static inline int qmgr_stat_nearly_empty(unsigned int queue) -+{ -+ return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_NEARLY_EMPTY); -+} -+ -+static inline int qmgr_stat_nearly_full(unsigned int queue) -+{ -+ return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_NEARLY_FULL); -+} -+ -+static inline int qmgr_stat_full(unsigned int queue) -+{ -+ return !!(qmgr_get_stat1(queue) & QUEUE_STAT1_FULL); -+} -+ -+static inline int qmgr_stat_underflow(unsigned int queue) -+{ -+ return !!(qmgr_get_stat2(queue) & QUEUE_STAT2_UNDERFLOW); -+} -+ -+static inline int qmgr_stat_overflow(unsigned int queue) -+{ -+ return !!(qmgr_get_stat2(queue) & QUEUE_STAT2_OVERFLOW); -+} -+ -+#endif -Index: linux-2.6.23.17/include/asm-arm/arch-ixp4xx/uncompress.h -=================================================================== ---- linux-2.6.23.17.orig/include/asm-arm/arch-ixp4xx/uncompress.h -+++ linux-2.6.23.17/include/asm-arm/arch-ixp4xx/uncompress.h -@@ -13,7 +13,7 @@ - #ifndef _ARCH_UNCOMPRESS_H_ - #define _ARCH_UNCOMPRESS_H_ - --#include <asm/hardware.h> -+#include "ixp4xx-regs.h" - #include <asm/mach-types.h> - #include <linux/serial_reg.h> - |