diff options
author | Felix Fietkau <nbd@openwrt.org> | 2007-09-06 16:27:37 +0000 |
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committer | Felix Fietkau <nbd@openwrt.org> | 2007-09-06 16:27:37 +0000 |
commit | 92558d67a463bfbb351d30e28648de03b635f024 (patch) | |
tree | a5d41b991a151e72663527a96fbc6c494565d65c /target/linux/ar7/files/arch | |
parent | e1dbce411cd2a3a067f387cee011cd889486a07d (diff) | |
download | upstream-92558d67a463bfbb351d30e28648de03b635f024.tar.gz upstream-92558d67a463bfbb351d30e28648de03b635f024.tar.bz2 upstream-92558d67a463bfbb351d30e28648de03b635f024.zip |
strip the kernel version suffix from target directories, except for brcm-2.4 (the -2.4 will be included in the board name here). CONFIG_LINUX_<ver>_<board> becomes CONFIG_TARGET_<board>, same for profiles.
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@8653 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/ar7/files/arch')
-rw-r--r-- | target/linux/ar7/files/arch/mips/ar7/Makefile | 16 | ||||
-rw-r--r-- | target/linux/ar7/files/arch/mips/ar7/clock.c | 470 | ||||
-rw-r--r-- | target/linux/ar7/files/arch/mips/ar7/gpio.c | 56 | ||||
-rw-r--r-- | target/linux/ar7/files/arch/mips/ar7/irq.c | 205 | ||||
-rw-r--r-- | target/linux/ar7/files/arch/mips/ar7/memory.c | 75 | ||||
-rw-r--r-- | target/linux/ar7/files/arch/mips/ar7/platform.c | 412 | ||||
-rw-r--r-- | target/linux/ar7/files/arch/mips/ar7/prom.c | 327 | ||||
-rw-r--r-- | target/linux/ar7/files/arch/mips/ar7/setup.c | 124 | ||||
-rw-r--r-- | target/linux/ar7/files/arch/mips/ar7/time.c | 59 | ||||
-rw-r--r-- | target/linux/ar7/files/arch/mips/ar7/vlynq-pci.c | 402 | ||||
-rw-r--r-- | target/linux/ar7/files/arch/mips/ar7/vlynq.c | 553 |
11 files changed, 2699 insertions, 0 deletions
diff --git a/target/linux/ar7/files/arch/mips/ar7/Makefile b/target/linux/ar7/files/arch/mips/ar7/Makefile new file mode 100644 index 0000000000..3ec49ee0d4 --- /dev/null +++ b/target/linux/ar7/files/arch/mips/ar7/Makefile @@ -0,0 +1,16 @@ + +obj-y := \ + prom.o \ + setup.o \ + memory.o \ + irq.o \ + time.o \ + platform.o \ + gpio.o \ + clock.o \ + vlynq.o + +obj-$(CONFIG_PCI) += \ + vlynq-pci.o + +EXTRA_AFLAGS := $(CFLAGS) diff --git a/target/linux/ar7/files/arch/mips/ar7/clock.c b/target/linux/ar7/files/arch/mips/ar7/clock.c new file mode 100644 index 0000000000..9bdc8f4076 --- /dev/null +++ b/target/linux/ar7/files/arch/mips/ar7/clock.c @@ -0,0 +1,470 @@ +/* + * $Id$ + * + * Copyright (C) 2007 OpenWrt.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/init.h> +#include <linux/types.h> +#include <linux/module.h> +#include <linux/delay.h> +#include <asm/addrspace.h> +#include <asm/io.h> +#include <asm/ar7/ar7.h> + +#define BOOT_PLL_SOURCE_MASK 0x3 +#define CPU_PLL_SOURCE_SHIFT 16 +#define BUS_PLL_SOURCE_SHIFT 14 +#define USB_PLL_SOURCE_SHIFT 18 +#define DSP_PLL_SOURCE_SHIFT 22 +#define BOOT_PLL_SOURCE_AFE 0 +#define BOOT_PLL_SOURCE_BUS 0 +#define BOOT_PLL_SOURCE_REF 1 +#define BOOT_PLL_SOURCE_XTAL 2 +#define BOOT_PLL_SOURCE_CPU 3 +#define BOOT_PLL_BYPASS 0x00000020 +#define BOOT_PLL_ASYNC_MODE 0x02000000 +#define BOOT_PLL_2TO1_MODE 0x00008000 + +#define TNETD7200_CLOCK_ID_CPU 0 +#define TNETD7200_CLOCK_ID_DSP 1 +#define TNETD7200_CLOCK_ID_USB 2 + +#define TNETD7200_DEF_CPU_CLK 211000000 +#define TNETD7200_DEF_DSP_CLK 125000000 +#define TNETD7200_DEF_USB_CLK 48000000 + +struct tnetd7300_clock { + volatile u32 ctrl; +#define PREDIV_MASK 0x001f0000 +#define PREDIV_SHIFT 16 +#define POSTDIV_MASK 0x0000001f + u32 unused1[3]; + volatile u32 pll; +#define MUL_MASK 0x0000f000 +#define MUL_SHIFT 12 +#define PLL_MODE_MASK 0x00000001 +#define PLL_NDIV 0x00000800 +#define PLL_DIV 0x00000002 +#define PLL_STATUS 0x00000001 + u32 unused2[3]; +} __attribute__ ((packed)); + +struct tnetd7300_clocks { + struct tnetd7300_clock bus; + struct tnetd7300_clock cpu; + struct tnetd7300_clock usb; + struct tnetd7300_clock dsp; +} __attribute__ ((packed)); + +struct tnetd7200_clock { + volatile u32 ctrl; + u32 unused1[3]; +#define DIVISOR_ENABLE_MASK 0x00008000 + volatile u32 mul; + volatile u32 prediv; + volatile u32 postdiv; + volatile u32 postdiv2; + u32 unused2[6]; + volatile u32 cmd; + volatile u32 status; + volatile u32 cmden; + u32 padding[15]; +} __attribute__ ((packed)); + +struct tnetd7200_clocks { + struct tnetd7200_clock cpu; + struct tnetd7200_clock dsp; + struct tnetd7200_clock usb; +} __attribute__ ((packed)); + +int ar7_cpu_clock = 150000000; +EXPORT_SYMBOL(ar7_cpu_clock); +int ar7_bus_clock = 125000000; +EXPORT_SYMBOL(ar7_bus_clock); +int ar7_dsp_clock = 0; +EXPORT_SYMBOL(ar7_dsp_clock); + +static int gcd(int a, int b) +{ + int c; + + if (a < b) { + c = a; + a = b; + b = c; + } + while ((c = (a % b))) { + a = b; + b = c; + } + return b; +} + +static void approximate(int base, int target, int *prediv, + int *postdiv, int *mul) +{ + int i, j, k, freq, res = target; + for (i = 1; i <= 16; i++) { + for (j = 1; j <= 32; j++) { + for (k = 1; k <= 32; k++) { + freq = abs(base / j * i / k - target); + if (freq < res) { + res = freq; + *mul = i; + *prediv = j; + *postdiv = k; + } + } + } + } +} + +static void calculate(int base, int target, int *prediv, int *postdiv, + int *mul) +{ + int tmp_gcd, tmp_base, tmp_freq; + + for (*prediv = 1; *prediv <= 32; (*prediv)++) { + tmp_base = base / *prediv; + tmp_gcd = gcd(target, tmp_base); + *mul = target / tmp_gcd; + *postdiv = tmp_base / tmp_gcd; + if ((*mul < 1) || (*mul >= 16)) + continue; + if ((*postdiv > 0) & (*postdiv <= 32)) + break; + } + + if (base / (*prediv) * (*mul) / (*postdiv) != target) { + approximate(base, target, prediv, postdiv, mul); + tmp_freq = base / (*prediv) * (*mul) / (*postdiv); + printk(KERN_WARNING + "Adjusted requested frequency %d to %d\n", + target, tmp_freq); + } + + printk(KERN_DEBUG "Clocks: prediv: %d, postdiv: %d, mul: %d\n", + *prediv, *postdiv, *mul); +} + +static int tnetd7300_dsp_clock(void) +{ + u32 didr1, didr2; + u8 rev = ar7_chip_rev(); + didr1 = readl((void *)KSEG1ADDR(AR7_REGS_GPIO + 0x18)); + didr2 = readl((void *)KSEG1ADDR(AR7_REGS_GPIO + 0x1c)); + if (didr2 & (1 << 23)) + return 0; + if ((rev >= 0x23) && (rev != 0x57)) + return 250000000; + if ((((didr2 & 0x1fff) << 10) | ((didr1 & 0xffc00000) >> 22)) + > 4208000) + return 250000000; + return 0; +} + +static int tnetd7300_get_clock(u32 shift, struct tnetd7300_clock *clock, + u32 *bootcr, u32 bus_clock) +{ + int product; + int base_clock = AR7_REF_CLOCK; + u32 ctrl = clock->ctrl; + u32 pll = clock->pll; + int prediv = ((ctrl & PREDIV_MASK) >> PREDIV_SHIFT) + 1; + int postdiv = (ctrl & POSTDIV_MASK) + 1; + int divisor = prediv * postdiv; + int mul = ((pll & MUL_MASK) >> MUL_SHIFT) + 1; + + switch ((*bootcr & (BOOT_PLL_SOURCE_MASK << shift)) >> shift) { + case BOOT_PLL_SOURCE_BUS: + base_clock = bus_clock; + break; + case BOOT_PLL_SOURCE_REF: + base_clock = AR7_REF_CLOCK; + break; + case BOOT_PLL_SOURCE_XTAL: + base_clock = AR7_XTAL_CLOCK; + break; + case BOOT_PLL_SOURCE_CPU: + base_clock = ar7_cpu_clock; + break; + } + + if (*bootcr & BOOT_PLL_BYPASS) + return base_clock / divisor; + + if ((pll & PLL_MODE_MASK) == 0) + return (base_clock >> (mul / 16 + 1)) / divisor; + + if ((pll & (PLL_NDIV | PLL_DIV)) == (PLL_NDIV | PLL_DIV)) { + product = (mul & 1) ? + (base_clock * mul) >> 1 : + (base_clock * (mul - 1)) >> 2; + return product / divisor; + } + + if (mul == 16) + return base_clock / divisor; + + return base_clock * mul / divisor; +} + +static void tnetd7300_set_clock(u32 shift, struct tnetd7300_clock *clock, + u32 *bootcr, u32 frequency) +{ + u32 status; + int prediv, postdiv, mul; + int base_clock = ar7_bus_clock; + + switch ((*bootcr & (BOOT_PLL_SOURCE_MASK << shift)) >> shift) { + case BOOT_PLL_SOURCE_BUS: + base_clock = ar7_bus_clock; + break; + case BOOT_PLL_SOURCE_REF: + base_clock = AR7_REF_CLOCK; + break; + case BOOT_PLL_SOURCE_XTAL: + base_clock = AR7_XTAL_CLOCK; + break; + case BOOT_PLL_SOURCE_CPU: + base_clock = ar7_cpu_clock; + break; + } + + calculate(base_clock, frequency, &prediv, &postdiv, &mul); + + clock->ctrl = ((prediv - 1) << PREDIV_SHIFT) | (postdiv - 1); + mdelay(1); + clock->pll = 4; + do { + status = clock->pll; + } while (status & PLL_STATUS); + clock->pll = ((mul - 1) << MUL_SHIFT) | (0xff << 3) | 0x0e; + mdelay(75); +} + +static void __init tnetd7300_init_clocks(void) +{ + u32 *bootcr = (u32 *)ioremap_nocache(AR7_REGS_DCL, 4); + struct tnetd7300_clocks *clocks = (struct tnetd7300_clocks *)ioremap_nocache(AR7_REGS_POWER + 0x20, sizeof(struct tnetd7300_clocks)); + + ar7_bus_clock = tnetd7300_get_clock(BUS_PLL_SOURCE_SHIFT, + &clocks->bus, bootcr, AR7_AFE_CLOCK); + + if (*bootcr & BOOT_PLL_ASYNC_MODE) { + ar7_cpu_clock = tnetd7300_get_clock(CPU_PLL_SOURCE_SHIFT, + &clocks->cpu, bootcr, AR7_AFE_CLOCK); + } else { + ar7_cpu_clock = ar7_bus_clock; + } +#if 0 + tnetd7300_set_clock(USB_PLL_SOURCE_SHIFT, &clocks->usb, + bootcr, 48000000); +#endif + if (ar7_dsp_clock == 250000000) + tnetd7300_set_clock(DSP_PLL_SOURCE_SHIFT, &clocks->dsp, + bootcr, ar7_dsp_clock); + + iounmap(clocks); + iounmap(bootcr); +} + +static int tnetd7200_get_clock(int base, struct tnetd7200_clock *clock, + u32 *bootcr, u32 bus_clock) +{ + int divisor = ((clock->prediv & 0x1f) + 1) * + ((clock->postdiv & 0x1f) + 1); + + if (*bootcr & BOOT_PLL_BYPASS) + return base / divisor; + + return base * ((clock->mul & 0xf) + 1) / divisor; +} + + +static void tnetd7200_set_clock(int base, struct tnetd7200_clock *clock, + int prediv, int postdiv, int postdiv2, int mul, u32 frequency) +{ + printk("Clocks: base = %d, frequency = %u, prediv = %d, postdiv = %d, postdiv2 = %d, mul = %d\n", + base, frequency, prediv, postdiv, postdiv2, mul); + + clock->ctrl = 0; + clock->prediv = DIVISOR_ENABLE_MASK | ((prediv - 1) & 0x1F); + clock->mul = ((mul - 1) & 0xF); + + for(mul = 0; mul < 2000; mul++) /* nop */; + + while(clock->status & 0x1) /* nop */; + + clock->postdiv = DIVISOR_ENABLE_MASK | ((postdiv - 1) & 0x1F); + + clock->cmden |= 1; + clock->cmd |= 1; + + while(clock->status & 0x1) /* nop */; + + clock->postdiv2 = DIVISOR_ENABLE_MASK | ((postdiv2 - 1) & 0x1F); + + clock->cmden |= 1; + clock->cmd |= 1; + + while(clock->status & 0x1) /* nop */; + + clock->ctrl |= 1; +} + +static int tnetd7200_get_clock_base(int clock_id, u32 *bootcr) +{ + if (*bootcr & BOOT_PLL_ASYNC_MODE) { + // Async + switch (clock_id) { + case TNETD7200_CLOCK_ID_DSP: + return AR7_REF_CLOCK; + default: + return AR7_AFE_CLOCK; + } + } else { + // Sync + if (*bootcr & BOOT_PLL_2TO1_MODE) { + // 2:1 + switch (clock_id) { + case TNETD7200_CLOCK_ID_DSP: + return AR7_REF_CLOCK; + default: + return AR7_AFE_CLOCK; + } + } else { + // 1:1 + return AR7_REF_CLOCK; + } + } +} + + +static void __init tnetd7200_init_clocks(void) +{ + u32 *bootcr = (u32 *)ioremap_nocache(AR7_REGS_DCL, 4); + struct tnetd7200_clocks *clocks = (struct tnetd7200_clocks *)ioremap_nocache(AR7_REGS_POWER + 0x80, sizeof(struct tnetd7200_clocks)); + int cpu_base, cpu_mul, cpu_prediv, cpu_postdiv; + int dsp_base, dsp_mul, dsp_prediv, dsp_postdiv; + int usb_base, usb_mul, usb_prediv, usb_postdiv; + +/* + Log from Fritz!Box 7170 Annex B: + + CPU revision is: 00018448 + Clocks: Async mode + Clocks: Setting DSP clock + Clocks: prediv: 1, postdiv: 1, mul: 5 + Clocks: base = 25000000, frequency = 125000000, prediv = 1, postdiv = 2, postdiv2 = 1, mul = 10 + Clocks: Setting CPU clock + Adjusted requested frequency 211000000 to 211968000 + Clocks: prediv: 1, postdiv: 1, mul: 6 + Clocks: base = 35328000, frequency = 211968000, prediv = 1, postdiv = 1, postdiv2 = -1, mul = 6 + Clocks: Setting USB clock + Adjusted requested frequency 48000000 to 48076920 + Clocks: prediv: 13, postdiv: 1, mul: 5 + Clocks: base = 125000000, frequency = 48000000, prediv = 13, postdiv = 1, postdiv2 = -1, mul = 5 + + DSL didn't work if you didn't set the postdiv 2:1 postdiv2 combination, driver hung on startup. + Haven't tested this on a synchronous board, neither do i know what to do with ar7_dsp_clock +*/ + + cpu_base = tnetd7200_get_clock_base(TNETD7200_CLOCK_ID_CPU, bootcr); + dsp_base = tnetd7200_get_clock_base(TNETD7200_CLOCK_ID_DSP, bootcr); + + if (*bootcr & BOOT_PLL_ASYNC_MODE) { + printk("Clocks: Async mode\n"); + + printk("Clocks: Setting DSP clock\n"); + calculate(dsp_base, TNETD7200_DEF_DSP_CLK, &dsp_prediv, &dsp_postdiv, &dsp_mul); + ar7_bus_clock = ((dsp_base / dsp_prediv) * dsp_mul) / dsp_postdiv; + tnetd7200_set_clock(dsp_base, &clocks->dsp, + dsp_prediv, dsp_postdiv * 2, dsp_postdiv, dsp_mul * 2, + ar7_bus_clock); + + printk("Clocks: Setting CPU clock\n"); + calculate(cpu_base, TNETD7200_DEF_CPU_CLK, &cpu_prediv, &cpu_postdiv, &cpu_mul); + ar7_cpu_clock = ((cpu_base / cpu_prediv) * cpu_mul) / cpu_postdiv; + tnetd7200_set_clock(cpu_base, &clocks->cpu, + cpu_prediv, cpu_postdiv, -1, cpu_mul, + ar7_cpu_clock); + + } else { + if (*bootcr & BOOT_PLL_2TO1_MODE) { + printk("Clocks: Sync 2:1 mode\n"); + + printk("Clocks: Setting CPU clock\n"); + calculate(cpu_base, TNETD7200_DEF_CPU_CLK, &cpu_prediv, &cpu_postdiv, &cpu_mul); + ar7_cpu_clock = ((cpu_base / cpu_prediv) * cpu_mul) / cpu_postdiv; + tnetd7200_set_clock(cpu_base, &clocks->cpu, + cpu_prediv, cpu_postdiv, -1, cpu_mul, + ar7_cpu_clock); + + printk("Clocks: Setting DSP clock\n"); + calculate(dsp_base, TNETD7200_DEF_DSP_CLK, &dsp_prediv, &dsp_postdiv, &dsp_mul); + ar7_bus_clock = ar7_cpu_clock / 2; + tnetd7200_set_clock(dsp_base, &clocks->dsp, + dsp_prediv, dsp_postdiv * 2, dsp_postdiv, dsp_mul * 2, + ar7_bus_clock); + } else { + printk("Clocks: Sync 1:1 mode\n"); + + printk("Clocks: Setting DSP clock\n"); + calculate(dsp_base, TNETD7200_DEF_CPU_CLK, &dsp_prediv, &dsp_postdiv, &dsp_mul); + ar7_bus_clock = ((dsp_base / dsp_prediv) * dsp_mul) / dsp_postdiv; + tnetd7200_set_clock(dsp_base, &clocks->dsp, + dsp_prediv, dsp_postdiv * 2, dsp_postdiv, dsp_mul * 2, + ar7_bus_clock); + + ar7_cpu_clock = ar7_bus_clock; + } + } + + printk("Clocks: Setting USB clock\n"); + usb_base = ar7_bus_clock; + calculate(usb_base, TNETD7200_DEF_USB_CLK, &usb_prediv, &usb_postdiv, &usb_mul); + tnetd7200_set_clock(usb_base, &clocks->usb, + usb_prediv, usb_postdiv, -1, usb_mul, + TNETD7200_DEF_USB_CLK); + + #warning FIXME: ????! Hrmm + ar7_dsp_clock = ar7_cpu_clock; + + iounmap(clocks); + iounmap(bootcr); +} + +void __init ar7_init_clocks(void) +{ + switch (ar7_chip_id()) { + case AR7_CHIP_7100: +#warning FIXME: Check if the new 7200 clock init works for 7100 + tnetd7200_init_clocks(); + break; + case AR7_CHIP_7200: + tnetd7200_init_clocks(); + break; + case AR7_CHIP_7300: + ar7_dsp_clock = tnetd7300_dsp_clock(); + tnetd7300_init_clocks(); + break; + default: + break; + } +} diff --git a/target/linux/ar7/files/arch/mips/ar7/gpio.c b/target/linux/ar7/files/arch/mips/ar7/gpio.c new file mode 100644 index 0000000000..8b3d3a958a --- /dev/null +++ b/target/linux/ar7/files/arch/mips/ar7/gpio.c @@ -0,0 +1,56 @@ +/* + * $Id$ + * + * Copyright (C) 2007 OpenWrt.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/init.h> +#include <linux/types.h> +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/platform_device.h> +#include <asm/addrspace.h> +#include <asm/io.h> +#include <asm/ar7/ar7.h> +#include <asm/ar7/gpio.h> + +static char *ar7_gpio_list[AR7_GPIO_MAX] = { 0, }; + +int gpio_request(unsigned gpio, char *label) +{ + if (gpio >= AR7_GPIO_MAX) + return -EINVAL; + + if (ar7_gpio_list[gpio]) + return -EBUSY; + + if (label) { + ar7_gpio_list[gpio] = label; + } else { + ar7_gpio_list[gpio] = "busy"; + } + + return 0; +} +EXPORT_SYMBOL(gpio_request); + +void gpio_free(unsigned gpio) +{ + BUG_ON(!ar7_gpio_list[gpio]); + ar7_gpio_list[gpio] = NULL; +} +EXPORT_SYMBOL(gpio_free); diff --git a/target/linux/ar7/files/arch/mips/ar7/irq.c b/target/linux/ar7/files/arch/mips/ar7/irq.c new file mode 100644 index 0000000000..1a09aedc1a --- /dev/null +++ b/target/linux/ar7/files/arch/mips/ar7/irq.c @@ -0,0 +1,205 @@ +/* + * $Id$ + * + * Copyright (C) 2006, 2007 OpenWrt.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> + +#include <asm/irq.h> +#include <asm/irq_cpu.h> +#include <asm/mipsregs.h> +#include <asm/ar7/ar7.h> + +#define EXCEPT_OFFSET 0x80 +#define PACE_OFFSET 0xA0 +#define CHNLS_OFFSET 0x200 + +#define REG_OFFSET(irq, reg) ((irq) / 32 * 0x4 + reg * 0x10) +#define SEC_REG_OFFSET(reg) (EXCEPT_OFFSET + reg * 0x8) +#define SEC_SR_OFFSET (SEC_REG_OFFSET(0)) /* 0x80 */ +#define CR_OFFSET(irq) (REG_OFFSET(irq, 1)) /* 0x10 */ +#define SEC_CR_OFFSET (SEC_REG_OFFSET(1)) /* 0x88 */ +#define ESR_OFFSET(irq) (REG_OFFSET(irq, 2)) /* 0x20 */ +#define SEC_ESR_OFFSET (SEC_REG_OFFSET(2)) /* 0x90 */ +#define ECR_OFFSET(irq) (REG_OFFSET(irq, 3)) /* 0x30 */ +#define SEC_ECR_OFFSET (SEC_REG_OFFSET(3)) /* 0x98 */ +#define PIR_OFFSET (0x40) +#define MSR_OFFSET (0x44) +#define PM_OFFSET(irq) (REG_OFFSET(irq, 5)) /* 0x50 */ +#define TM_OFFSET(irq) (REG_OFFSET(irq, 6)) /* 0x60 */ + +#define REG(addr) (*(volatile u32 *)(KSEG1ADDR(AR7_REGS_IRQ) + addr)) + +#define CHNL_OFFSET(chnl) (CHNLS_OFFSET + (chnl * 4)) + +static void ar7_unmask_irq(unsigned int irq_nr); +static void ar7_mask_irq(unsigned int irq_nr); +static void ar7_unmask_secondary_irq(unsigned int irq_nr); +static void ar7_mask_secondary_irq(unsigned int irq_nr); +static irqreturn_t ar7_cascade(int interrupt, void *dev); +static irqreturn_t ar7_secondary_cascade(int interrupt, void *dev); +static void ar7_irq_init(int base); +static int ar7_irq_base; + +static struct irq_chip ar7_irq_type = { + .typename = "AR7", + .name = "AR7", + .unmask = ar7_unmask_irq, + .mask = ar7_mask_irq, +}; + +static struct irq_chip ar7_secondary_irq_type = { + .name = "AR7", + .unmask = ar7_unmask_secondary_irq, + .mask = ar7_mask_secondary_irq, +}; + +static struct irqaction ar7_cascade_action = { + .handler = ar7_cascade, + .name = "AR7 cascade interrupt" +}; + +static struct irqaction ar7_secondary_cascade_action = { + .handler = ar7_secondary_cascade, + .name = "AR7 secondary cascade interrupt" +}; + +static void ar7_unmask_irq(unsigned int irq) +{ + unsigned long flags; + local_irq_save(flags); + /* enable the interrupt channel bit */ + REG(ESR_OFFSET(irq)) = 1 << ((irq - ar7_irq_base) % 32); + local_irq_restore(flags); +} + +static void ar7_mask_irq(unsigned int irq) +{ + unsigned long flags; + local_irq_save(flags); + /* disable the interrupt channel bit */ + REG(ECR_OFFSET(irq)) = 1 << ((irq - ar7_irq_base) % 32); + local_irq_restore(flags); +} + +static void ar7_unmask_secondary_irq(unsigned int irq) +{ + unsigned long flags; + local_irq_save(flags); + /* enable the interrupt channel bit */ + REG(SEC_ESR_OFFSET) = 1 << (irq - ar7_irq_base - 40); + local_irq_restore(flags); +} + +static void ar7_mask_secondary_irq(unsigned int irq) +{ + unsigned long flags; + local_irq_save(flags); + /* disable the interrupt channel bit */ + REG(SEC_ECR_OFFSET) = 1 << (irq - ar7_irq_base - 40); + local_irq_restore(flags); +} + +void __init arch_init_irq(void) { + mips_cpu_irq_init(); + ar7_irq_init(8); +} + +static void __init ar7_irq_init(int base) +{ + int i; + /* + Disable interrupts and clear pending + */ + REG(ECR_OFFSET(0)) = 0xffffffff; + REG(ECR_OFFSET(32)) = 0xff; + REG(SEC_ECR_OFFSET) = 0xffffffff; + REG(CR_OFFSET(0)) = 0xffffffff; + REG(CR_OFFSET(32)) = 0xff; + REG(SEC_CR_OFFSET) = 0xffffffff; + + ar7_irq_base = base; + + for(i = 0; i < 40; i++) { + REG(CHNL_OFFSET(i)) = i; + /* Primary IRQ's */ + irq_desc[i + base].status = IRQ_DISABLED; + irq_desc[i + base].action = NULL; + irq_desc[i + base].depth = 1; + irq_desc[i + base].chip = &ar7_irq_type; + /* Secondary IRQ's */ + if (i < 32) { + irq_desc[i + base + 40].status = IRQ_DISABLED; + irq_desc[i + base + 40].action = NULL; + irq_desc[i + base + 40].depth = 1; + irq_desc[i + base + 40].chip = &ar7_secondary_irq_type; + } + } + + setup_irq(2, &ar7_cascade_action); + setup_irq(ar7_irq_base, &ar7_secondary_cascade_action); + set_c0_status(IE_IRQ0); +} + +static irqreturn_t ar7_cascade(int interrupt, void *dev) +{ + int irq; + + irq = (REG(PIR_OFFSET) & 0x3F); + REG(CR_OFFSET(irq)) = 1 << (irq % 32); + + do_IRQ(irq + ar7_irq_base); + + return IRQ_HANDLED; +} + +static irqreturn_t ar7_secondary_cascade(int interrupt, void *dev) +{ + int irq = 0, i; + unsigned long status; + + status = REG(SEC_SR_OFFSET); + if (unlikely(!status)) { + spurious_interrupt(); + return IRQ_NONE; + } + + for (i = 0; i < 32; i++) + if (status & (i << 1)) { + irq = i + 40; + REG(SEC_CR_OFFSET) = 1 << i; + break; + } + + do_IRQ(irq + ar7_irq_base); + + return IRQ_HANDLED; +} + +asmlinkage void plat_irq_dispatch(void) +{ + unsigned int pending = read_c0_status() & read_c0_cause(); + if (pending & STATUSF_IP7) /* cpu timer */ + do_IRQ(7); + else if (pending & STATUSF_IP2) /* int0 hardware line */ + do_IRQ(2); + else + spurious_interrupt(); +} diff --git a/target/linux/ar7/files/arch/mips/ar7/memory.c b/target/linux/ar7/files/arch/mips/ar7/memory.c new file mode 100644 index 0000000000..99faf217b7 --- /dev/null +++ b/target/linux/ar7/files/arch/mips/ar7/memory.c @@ -0,0 +1,75 @@ +/* + * $Id$ + * + * Copyright (C) 2007 OpenWrt.org + * + * Based on arch/mips/mm/init.c + * Copyright (C) 1994 - 2000 Ralf Baechle + * Copyright (C) 1999, 2000 Silicon Graphics, Inc. + * Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com + * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include <linux/bootmem.h> +#include <linux/init.h> +#include <linux/mm.h> +#include <linux/module.h> +#include <linux/pfn.h> +#include <linux/proc_fs.h> +#include <linux/string.h> +#include <linux/swap.h> + +#include <asm/bootinfo.h> +#include <asm/page.h> +#include <asm/sections.h> + +#include <asm/mips-boards/prom.h> + +static int __init memsize(void) +{ + u32 size = (64 << 20); + volatile u32 *addr = (u32 *)KSEG1ADDR(0x14000000 + size - 4); + u32 *kernel_end = (u32 *)KSEG1ADDR(CPHYSADDR((u32)&_end)); + + while (addr > kernel_end) { + *addr = (u32)addr; + size >>= 1; + addr -= size >> 2; + } + + do { + addr += size >> 2; + if (*addr != (u32)addr) + break; + size <<= 1; + } while (size < (64 << 20)); + + return size; +} + +void __init prom_meminit(void) +{ + unsigned long pages; + + pages = memsize() >> PAGE_SHIFT; + add_memory_region(ARCH_PFN_OFFSET << PAGE_SHIFT, pages << + PAGE_SHIFT, BOOT_MEM_RAM); +} + +void __init prom_free_prom_memory(void) +{ + return; +} diff --git a/target/linux/ar7/files/arch/mips/ar7/platform.c b/target/linux/ar7/files/arch/mips/ar7/platform.c new file mode 100644 index 0000000000..cae35bc229 --- /dev/null +++ b/target/linux/ar7/files/arch/mips/ar7/platform.c @@ -0,0 +1,412 @@ +/* + * $Id$ + * + * Copyright (C) 2006, 2007 OpenWrt.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/autoconf.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/platform_device.h> +#include <linux/mtd/physmap.h> +#include <linux/serial.h> +#include <linux/serial_8250.h> +#include <linux/ioport.h> +#include <asm/addrspace.h> +#include <asm/io.h> +#include <asm/ar7/ar7.h> +#include <asm/ar7/gpio.h> +#include <asm/ar7/prom.h> +#include <asm/ar7/vlynq.h> + +struct plat_vlynq_data { + struct plat_vlynq_ops ops; + int gpio_bit; + int reset_bit; +}; + + +static int vlynq_on(struct vlynq_device *dev) +{ + int result; + struct plat_vlynq_data *pdata = dev->dev.platform_data; + + if ((result = gpio_request(pdata->gpio_bit, "vlynq"))) + goto out; + + ar7_device_reset(pdata->reset_bit); + + if ((result = ar7_gpio_disable(pdata->gpio_bit))) + goto out_enabled; + + if ((result = ar7_gpio_enable(pdata->gpio_bit))) + goto out_enabled; + + if ((result = gpio_direction_output(pdata->gpio_bit))) + goto out_gpio_enabled; + + gpio_set_value(pdata->gpio_bit, 0); + mdelay(50); + + gpio_set_value(pdata->gpio_bit, 1); + mdelay(50); + + return 0; + +out_gpio_enabled: + ar7_gpio_disable(pdata->gpio_bit); +out_enabled: + ar7_device_disable(pdata->reset_bit); + gpio_free(pdata->gpio_bit); +out: + return result; +} + +static void vlynq_off(struct vlynq_device *dev) +{ + struct plat_vlynq_data *pdata = dev->dev.platform_data; + ar7_gpio_disable(pdata->gpio_bit); + gpio_free(pdata->gpio_bit); + ar7_device_disable(pdata->reset_bit); +} + +static struct resource physmap_flash_resource = { + .name = "mem", + .flags = IORESOURCE_MEM, + .start = 0x10000000, + .end = 0x107fffff, +}; + +static struct resource cpmac_low_res[] = { + { + .name = "regs", + .flags = IORESOURCE_MEM, + .start = AR7_REGS_MAC0, + .end = AR7_REGS_MAC0 + 0x7FF, + }, + { + .name = "irq", + .flags = IORESOURCE_IRQ, + .start = 27, + .end = 27, + }, +}; + +static struct resource cpmac_high_res[] = { + { + .name = "regs", + .flags = IORESOURCE_MEM, + .start = AR7_REGS_MAC1, + .end = AR7_REGS_MAC1 + 0x7FF, + }, + { + .name = "irq", + .flags = IORESOURCE_IRQ, + .start = 41, + .end = 41, + }, +}; + +static struct resource vlynq_low_res[] = { + { + .name = "regs", + .flags = IORESOURCE_MEM, + .start = AR7_REGS_VLYNQ0, + .end = AR7_REGS_VLYNQ0 + 0xff, + }, + { + .name = "irq", + .flags = IORESOURCE_IRQ, + .start = 29, + .end = 29, + }, + { + .name = "mem", + .flags = IORESOURCE_MEM, + .start = 0x04000000, + .end = 0x04ffffff, + }, + { + .name = "devirq", + .flags = IORESOURCE_IRQ, + .start = 80, + .end = 111, + }, +}; + +static struct resource vlynq_high_res[] = { + { + .name = "regs", + .flags = IORESOURCE_MEM, + .start = AR7_REGS_VLYNQ1, + .end = AR7_REGS_VLYNQ1 + 0xFF, + }, + { + .name = "irq", + .flags = IORESOURCE_IRQ, + .start = 33, + .end = 33, + }, + { + .name = "mem", + .flags = IORESOURCE_MEM, + .start = 0x0c000000, + .end = 0x0cffffff, + }, + { + .name = "devirq", + .flags = IORESOURCE_IRQ, + .start = 112, + .end = 143, + }, +}; + +static struct physmap_flash_data physmap_flash_data = { + .width = 2, +}; + +static struct plat_cpmac_data cpmac_low_data = { + .reset_bit = 17, + .power_bit = 20, + .phy_mask = 0x80000000, +}; + +static struct plat_cpmac_data cpmac_high_data = { + .reset_bit = 21, + .power_bit = 22, + .phy_mask = 0x7fffffff, +}; + +static struct plat_vlynq_data vlynq_low_data = { + .ops.on = vlynq_on, + .ops.off = vlynq_off, + .reset_bit = 20, + .gpio_bit = 18, +}; + +static struct plat_vlynq_data vlynq_high_data = { + .ops.on = vlynq_on, + .ops.off = vlynq_off, + .reset_bit = 16, + .gpio_bit = 19, +}; + +static struct platform_device physmap_flash = { + .id = 0, + .name = "physmap-flash", + .dev.platform_data = &physmap_flash_data, + .resource = &physmap_flash_resource, + .num_resources = 1, +}; + +static struct platform_device cpmac_low = { + .id = 0, + .name = "cpmac", + .dev.platform_data = &cpmac_low_data, + .resource = cpmac_low_res, + .num_resources = ARRAY_SIZE(cpmac_low_res), +}; + +static struct platform_device cpmac_high = { + .id = 1, + .name = "cpmac", + .dev.platform_data = &cpmac_high_data, + .resource = cpmac_high_res, + .num_resources = ARRAY_SIZE(cpmac_high_res), +}; + +static struct platform_device vlynq_low = { + .id = 0, + .name = "vlynq", + .dev.platform_data = &vlynq_low_data, + .resource = vlynq_low_res, + .num_resources = ARRAY_SIZE(vlynq_low_res), +}; + +static struct platform_device vlynq_high = { + .id = 1, + .name = "vlynq", + .dev.platform_data = &vlynq_high_data, + .resource = vlynq_high_res, + .num_resources = ARRAY_SIZE(vlynq_high_res), +}; + + +/* This is proper way to define uart ports, but they are then detected + * as xscale and, obviously, don't work... + */ +#if !defined(CONFIG_SERIAL_8250) + +static struct plat_serial8250_port uart0_data = +{ + .mapbase = AR7_REGS_UART0, + .irq = AR7_IRQ_UART0, + .regshift = 2, + .iotype = UPIO_MEM, + .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP, +}; + +static struct plat_serial8250_port uart1_data = +{ + .mapbase = UR8_REGS_UART1, + .irq = AR7_IRQ_UART1, + .regshift = 2, + .iotype = UPIO_MEM, + .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP, +}; + +static struct plat_serial8250_port uart_data[] = { + uart0_data, + uart1_data, + { .flags = 0 } +}; + +static struct plat_serial8250_port uart_data_single[] = { + uart0_data, + { .flags = 0 } +}; + +static struct platform_device uart = { + .id = 0, + .name = "serial8250", + .dev.platform_data = uart_data_single +}; +#endif + +static inline unsigned char char2hex(char h) +{ + switch (h) { + case '0': case '1': case '2': case '3': case '4': + case '5': case '6': case '7': case '8': case '9': + return h - '0'; + case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': + return h - 'A' + 10; + case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': + return h - 'a' + 10; + default: + return 0; + } +} + +static void cpmac_get_mac(int instance, unsigned char *dev_addr) +{ + int i; + char name[5], default_mac[] = "00:00:00:12:34:56", *mac; + + mac = NULL; + sprintf(name, "mac%c", 'a' + instance); + mac = prom_getenv(name); + if (!mac) { + sprintf(name, "mac%c", 'a'); + mac = prom_getenv(name); + } + if (!mac) + mac = default_mac; + for (i = 0; i < 6; i++) + dev_addr[i] = (char2hex(mac[i * 3]) << 4) + + char2hex(mac[i * 3 + 1]); +} + +static int __init ar7_register_devices(void) +{ + int res; + +#ifdef CONFIG_SERIAL_8250 + + static struct uart_port uart_port[2]; + + memset(uart_port, 0, sizeof(struct uart_port) * 2); + + uart_port[0].type = PORT_AR7; + uart_port[0].line = 0; + uart_port[0].irq = AR7_IRQ_UART0; + uart_port[0].uartclk = ar7_bus_freq() / 2; + uart_port[0].iotype = UPIO_MEM; + uart_port[0].mapbase = AR7_REGS_UART0; + uart_port[0].membase = ioremap(uart_port[0].mapbase, 256); + uart_port[0].regshift = 2; + res = early_serial_setup(&uart_port[0]); + if (res) + return res; + + + // Only TNETD73xx have a second serial port + if (ar7_has_second_uart()) { + uart_port[1].type = PORT_AR7; + uart_port[1].line = 1; + uart_port[1].irq = AR7_IRQ_UART1; + uart_port[1].uartclk = ar7_bus_freq() / 2; + uart_port[1].iotype = UPIO_MEM; + uart_port[1].mapbase = UR8_REGS_UART1; + uart_port[1].membase = ioremap(uart_port[1].mapbase, 256); + uart_port[1].regshift = 2; + res = early_serial_setup(&uart_port[1]); + if (res) + return res; + } + +#else // !CONFIG_SERIAL_8250 + + uart_data[0].uartclk = ar7_bus_freq() / 2; + uart_data[1].uartclk = uart_data[0].uartclk; + + // Only TNETD73xx have a second serial port + if (ar7_has_second_uart()) { + uart.dev.platform_data = uart_data; + } + + res = platform_device_register(&uart); + if (res) + return res; + +#endif // CONFIG_SERIAL_8250 + + res = platform_device_register(&physmap_flash); + if (res) + return res; + + res = platform_device_register(&vlynq_low); + if (res) + return res; + + ar7_device_disable(vlynq_low_data.reset_bit); + if (ar7_has_high_vlynq()) { + ar7_device_disable(vlynq_high_data.reset_bit); + res = platform_device_register(&vlynq_high); + if (res) + return res; + } + + if (ar7_has_high_cpmac()) { + cpmac_get_mac(1, cpmac_high_data.dev_addr); + res = platform_device_register(&cpmac_high); + if (res) + return res; + } else { + cpmac_low_data.phy_mask = 0xffffffff; + } + + cpmac_get_mac(0, cpmac_low_data.dev_addr); + res = platform_device_register(&cpmac_low); + + return res; +} + + +arch_initcall(ar7_register_devices); diff --git a/target/linux/ar7/files/arch/mips/ar7/prom.c b/target/linux/ar7/files/arch/mips/ar7/prom.c new file mode 100644 index 0000000000..28397427d0 --- /dev/null +++ b/target/linux/ar7/files/arch/mips/ar7/prom.c @@ -0,0 +1,327 @@ +/* + * $Id$ + * + * Copyright (C) 2006, 2007 OpenWrt.org + * + * Carsten Langgaard, carstenl@mips.com + * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Putting things on the screen/serial line using YAMONs facilities. + */ +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/serial_reg.h> +#include <linux/spinlock.h> +#include <linux/module.h> +#include <linux/string.h> +#include <asm/io.h> +#include <asm/bootinfo.h> +#include <asm/mips-boards/prom.h> +#include <asm/gdb-stub.h> + +#include <asm/ar7/ar7.h> +#include <asm/ar7/prom.h> + +#define MAX_ENTRY 80 + +struct env_var { + char *name; + char *value; +}; + +static struct env_var adam2_env[MAX_ENTRY] = { { 0, }, }; + +char * prom_getenv(char *name) +{ + int i; + for (i = 0; (i < MAX_ENTRY) && adam2_env[i].name; i++) + if (!strcmp(name, adam2_env[i].name)) + return adam2_env[i].value; + + return NULL; +} + +char * __init prom_getcmdline(void) +{ + return &(arcs_cmdline[0]); +} + +static void __init ar7_init_cmdline(int argc, char *argv[]) +{ + char *cp; + int actr; + + actr = 1; /* Always ignore argv[0] */ + + cp = &(arcs_cmdline[0]); + while(actr < argc) { + strcpy(cp, argv[actr]); + cp += strlen(argv[actr]); + *cp++ = ' '; + actr++; + } + if (cp != &(arcs_cmdline[0])) { + /* get rid of trailing space */ + --cp; + *cp = '\0'; + } +} + +struct psbl_rec { + u32 psbl_size; + u32 env_base; + u32 env_size; + u32 ffs_base; + u32 ffs_size; +}; + +static __initdata char psp_env_version[] = "TIENV0.8"; + +struct psp_env_chunk { + u8 num; + u8 ctrl; + u16 csum; + u8 len; + char data[11]; +} __attribute__ ((packed)); + +struct psp_var_map_entry { + u8 num; + char *value; +}; + +static struct psp_var_map_entry psp_var_map[] = { + { 1, "cpufrequency" }, + { 2, "memsize" }, + { 3, "flashsize" }, + { 4, "modetty0" }, + { 5, "modetty1" }, + { 8, "maca" }, + { 9, "macb" }, + { 28, "sysfrequency" }, + { 38, "mipsfrequency" }, +}; + +/* + +Well-known variable (num is looked up in table above for matching variable name) +Example: cpufrequency=211968000 ++----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ +| 01 |CTRL|CHECKSUM | 01 | _2 | _1 | _1 | _9 | _6 | _8 | _0 | _0 | _0 | \0 | FF | ++----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ + +Name=Value pair in a single chunk +Example: NAME=VALUE ++----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ +| 00 |CTRL|CHECKSUM | 01 | _N | _A | _M | _E | _0 | _V | _A | _L | _U | _E | \0 | ++----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ + +Name=Value pair in 2 chunks (len is the number of chunks) +Example: bootloaderVersion=1.3.7.15 ++----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ +| 00 |CTRL|CHECKSUM | 02 | _b | _o | _o | _t | _l | _o | _a | _d | _e | _r | _V | ++----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ +| _e | _r | _s | _i | _o | _n | \0 | _1 | _. | _3 | _. | _7 | _. | _1 | _5 | \0 | ++----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+ + +Data is padded with 0xFF + +*/ + +#define PSP_ENV_SIZE 4096 + +static char psp_env_data[PSP_ENV_SIZE] = { 0, }; + +static char * __init lookup_psp_var_map(u8 num) +{ + int i; + + for (i = 0; i < sizeof(psp_var_map); i++) + if (psp_var_map[i].num == num) + return psp_var_map[i].value; + + return NULL; +} + +static void __init add_adam2_var(char *name, char *value) +{ + int i; + for (i = 0; i < MAX_ENTRY; i++) { + if (!adam2_env[i].name) { + adam2_env[i].name = name; + adam2_env[i].value = value; + return; + } else if (!strcmp(adam2_env[i].name, name)) { + adam2_env[i].value = value; + return; + } + } +} + +static int __init parse_psp_env(void *psp_env_base) +{ + int i, n; + char *name, *value; + struct psp_env_chunk *chunks = (struct psp_env_chunk *)psp_env_data; + + memcpy_fromio(chunks, psp_env_base, PSP_ENV_SIZE); + + i = 1; + n = PSP_ENV_SIZE / sizeof(struct psp_env_chunk); + while (i < n) { + if ((chunks[i].num == 0xff) || ((i + chunks[i].len) > n)) + break; + value = chunks[i].data; + if (chunks[i].num) { + name = lookup_psp_var_map(chunks[i].num); + } else { + name = value; + value += strlen(name) + 1; + } + if (name) + add_adam2_var(name, value); + i += chunks[i].len; + } + return 0; +} + +static void __init ar7_init_env(struct env_var *env) +{ + int i; + struct psbl_rec *psbl = (struct psbl_rec *)(KSEG1ADDR(0x14000300)); + void *psp_env = (void *)KSEG1ADDR(psbl->env_base); + + if(strcmp(psp_env, psp_env_version) == 0) { + parse_psp_env(psp_env); + } else { + for (i = 0; i < MAX_ENTRY; i++, env++) + if (env->name) + add_adam2_var(env->name, env->value); + } +} + +static void __init console_config(void) +{ +#ifdef CONFIG_SERIAL_8250_CONSOLE + char console_string[40]; + int baud = 0; + char parity = '\0', bits = '\0', flow = '\0'; + char *s, *p; + + if (strstr(prom_getcmdline(), "console=")) + return; + +#ifdef CONFIG_KGDB + if (!strstr(prom_getcmdline(), "nokgdb")) + { + strcat(prom_getcmdline(), " console=kgdb"); + kgdb_enabled = 1; + return; + } +#endif + + if ((s = prom_getenv("modetty0"))) { + baud = simple_strtoul(s, &p, 10); + s = p; + if (*s == ',') s++; + if (*s) parity = *s++; + if (*s == ',') s++; + if (*s) bits = *s++; + if (*s == ',') s++; + if (*s == 'h') flow = 'r'; + } + + if (baud == 0) + baud = 38400; + if (parity != 'n' && parity != 'o' && parity != 'e') + parity = 'n'; + if (bits != '7' && bits != '8') + bits = '8'; + if (flow == '\0') + flow = 'r'; + + sprintf(console_string, " console=ttyS0,%d%c%c%c", baud, + parity, bits, flow); + strcat(prom_getcmdline(), console_string); +#endif +} + +void __init prom_init(void) +{ + ar7_init_cmdline(fw_arg0, (char **)fw_arg1); + ar7_init_env((struct env_var *)fw_arg2); + console_config(); +} + +#define PORT(offset) (KSEG1ADDR(AR7_REGS_UART0 + (offset * 4))) +static inline unsigned int serial_in(int offset) +{ + return readb((void *)PORT(offset)); +} + +static inline void serial_out(int offset, int value) +{ + writeb(value, (void *)PORT(offset)); +} + +char prom_getchar(void) +{ + while (!(serial_in(UART_LSR) & UART_LSR_DR)); + return serial_in(UART_RX); +} + +int prom_putchar(char c) +{ + while ((serial_in(UART_LSR) & UART_LSR_TEMT) == 0); + serial_out(UART_TX, c); + return 1; +} + +// from adm5120/prom.c +void prom_printf(char *fmt, ...) +{ + va_list args; + int l; + char *p, *buf_end; + char buf[1024]; + + va_start(args, fmt); + l = vsprintf(buf, fmt, args); /* hopefully i < sizeof(buf) */ + va_end(args); + + buf_end = buf + l; + + for (p = buf; p < buf_end; p++) { + /* Crude cr/nl handling is better than none */ + if (*p == '\n') + prom_putchar('\r'); + prom_putchar(*p); + } +} + +#ifdef CONFIG_KGDB +int putDebugChar(char c) +{ + return prom_putchar(c); +} + +char getDebugChar(void) +{ + return prom_getchar(); +} +#endif + +EXPORT_SYMBOL(prom_getenv); diff --git a/target/linux/ar7/files/arch/mips/ar7/setup.c b/target/linux/ar7/files/arch/mips/ar7/setup.c new file mode 100644 index 0000000000..4abc39f1df --- /dev/null +++ b/target/linux/ar7/files/arch/mips/ar7/setup.c @@ -0,0 +1,124 @@ +/* + * $Id$ + * + * Copyright (C) 2006, 2007 OpenWrt.org + * + * Carsten Langgaard, carstenl@mips.com + * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + */ +#include <linux/init.h> +#include <linux/sched.h> +#include <linux/ioport.h> +#include <linux/pci.h> +#include <linux/tty.h> +#include <linux/pm.h> +#include <linux/serial_8250.h> +#include <linux/serial_core.h> +#include <linux/serial.h> +#include <linux/serial_reg.h> + +#include <asm/cpu.h> +#include <asm/irq.h> +#include <asm/mips-boards/generic.h> +#include <asm/mips-boards/prom.h> +#include <asm/dma.h> +#include <asm/time.h> +#include <asm/traps.h> +#include <asm/io.h> +#include <asm/reboot.h> +#include <asm/gdb-stub.h> +#include <asm/ar7/ar7.h> + +extern void ar7_time_init(void); +static void ar7_machine_restart(char *command); +static void ar7_machine_halt(void); +static void ar7_machine_power_off(void); + +static void ar7_machine_restart(char *command) +{ + volatile u32 *softres_reg = (u32 *)ioremap(AR7_REGS_RESET + + AR7_RESET_SOFTWARE, 1); + *softres_reg = 1; +} + +static void ar7_machine_halt(void) +{ + while (1); +} + +static void ar7_machine_power_off(void) +{ + volatile u32 *power_reg = (u32 *)ioremap(AR7_REGS_POWER, 1); + u32 power_state = *power_reg | (3 << 30); + *power_reg = power_state; + ar7_machine_halt(); +} + +const char *get_system_type(void) +{ + u16 chip_id = ar7_chip_id(); + switch (chip_id) { + case AR7_CHIP_7300: + return "TI AR7 (TNETD7300)"; + case AR7_CHIP_7100: + return "TI AR7 (TNETD7100)"; + case AR7_CHIP_7200: + return "TI AR7 (TNETD7200)"; + default: + return "TI AR7 (Unknown)"; + } +} + +static int __init ar7_init_console(void) +{ + return 0; +} + +/* + * Initializes basic routines and structures pointers, memory size (as + * given by the bios and saves the command line. + */ + +extern void ar7_init_clocks(void); + +void __init plat_mem_setup(void) +{ + unsigned long io_base; + + _machine_restart = ar7_machine_restart; + _machine_halt = ar7_machine_halt; + pm_power_off = ar7_machine_power_off; + board_time_init = ar7_time_init; + panic_timeout = 3; + + io_base = (unsigned long)ioremap(AR7_REGS_BASE, 0x10000); + if (!io_base) panic("Can't remap IO base!\n"); + set_io_port_base(io_base); + + prom_meminit(); +#warning FIXME: clock initialisation + ar7_init_clocks(); + + ioport_resource.start = 0; + ioport_resource.end = ~0; + iomem_resource.start = 0; + iomem_resource.end = ~0; + + printk("%s, ID: 0x%04x, Revision: 0x%02x\n", get_system_type(), + ar7_chip_id(), ar7_chip_rev()); +} + +console_initcall(ar7_init_console); diff --git a/target/linux/ar7/files/arch/mips/ar7/time.c b/target/linux/ar7/files/arch/mips/ar7/time.c new file mode 100644 index 0000000000..6a1ee7a4df --- /dev/null +++ b/target/linux/ar7/files/arch/mips/ar7/time.c @@ -0,0 +1,59 @@ +/* + * $Id$ + * + * Copyright (C) 2006, 2007 OpenWrt.org + * + * Carsten Langgaard, carstenl@mips.com + * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Setting up the clock on the MIPS boards. + */ + +#include <linux/types.h> +#include <linux/init.h> +#include <linux/kernel_stat.h> +#include <linux/sched.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> +#include <linux/time.h> +#include <linux/timex.h> +#include <linux/mc146818rtc.h> + +#include <asm/mipsregs.h> +#include <asm/ptrace.h> +#include <asm/hardirq.h> +#include <asm/irq.h> +#include <asm/div64.h> +#include <asm/cpu.h> +#include <asm/time.h> +#include <asm/mc146818-time.h> +#include <asm/msc01_ic.h> + +#include <asm/mips-boards/generic.h> +#include <asm/mips-boards/prom.h> +#include <asm/mips-boards/maltaint.h> +#include <asm/mc146818-time.h> +#include <asm/ar7/ar7.h> + +void __init ar7_time_init(void) +{ + mips_hpt_frequency = ar7_cpu_freq() / 2; +} + +void __init plat_timer_setup(struct irqaction *irq) +{ + setup_irq(7, irq); +} diff --git a/target/linux/ar7/files/arch/mips/ar7/vlynq-pci.c b/target/linux/ar7/files/arch/mips/ar7/vlynq-pci.c new file mode 100644 index 0000000000..eb11a3b002 --- /dev/null +++ b/target/linux/ar7/files/arch/mips/ar7/vlynq-pci.c @@ -0,0 +1,402 @@ +/* + * $Id$ + * + * Copyright (C) 2006, 2007 OpenWrt.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/irq.h> +#include <asm/ar7/vlynq.h> + +#define VLYNQ_PCI_SLOTS 2 + +struct vlynq_reg_config { + u32 offset; + u32 value; +}; + +struct vlynq_pci_config { + u32 chip_id; + char name[32]; + struct vlynq_mapping rx_mapping[4]; + int irq; + int irq_type; + u32 chip; + u32 class; + int num_regs; + struct vlynq_reg_config regs[10]; +}; + +struct vlynq_pci_private { + u32 latency; + u32 cache_line; + u32 command; + u32 sz_mask; + struct vlynq_pci_config *config; +}; + +static struct vlynq_pci_config known_devices[] = { + { + .chip_id = 0x00000009, .name = "TI ACX111", + .rx_mapping = { + { .size = 0x22000, .offset = 0xf0000000 }, + { .size = 0x40000, .offset = 0xc0000000 }, + { .size = 0x0, .offset = 0x0 }, + { .size = 0x0, .offset = 0x0 }, + }, + .irq = 0, .chip = 0x9066104c, + .irq_type = IRQ_TYPE_EDGE_RISING, + .class = PCI_CLASS_NETWORK_OTHER, + .num_regs = 5, + .regs = { + { .offset = 0x790, .value = (0xd0000000 - (ARCH_PFN_OFFSET << PAGE_SHIFT)) }, + { .offset = 0x794, .value = (0xd0000000 - (ARCH_PFN_OFFSET << PAGE_SHIFT)) }, + { .offset = 0x740, .value = 0 }, + { .offset = 0x744, .value = 0x00010000 }, + { .offset = 0x764, .value = 0x00010000 }, + }, + }, +}; + +static struct vlynq_device *slots[VLYNQ_PCI_SLOTS] = { NULL, }; + +static struct resource vlynq_io_resource = { + .start = 0x00000000, + .end = 0x00000000, + .name = "pci IO space", + .flags = IORESOURCE_IO +}; + +static struct resource vlynq_mem_resource = { + .start = 0x00000000, + .end = 0x00000000, + .name = "pci memory space", + .flags = IORESOURCE_MEM +}; + +static inline u32 vlynq_get_mapped(struct vlynq_device *dev, int res) +{ + int i; + struct vlynq_pci_private *priv = dev->priv; + u32 ret = dev->mem_start; + if (!priv->config->rx_mapping[res].size) return 0; + for (i = 0; i < res; i++) + ret += priv->config->rx_mapping[i].size; + + return ret; +} + +static inline u32 vlynq_read(u32 val, int size) { + switch (size) { + case 1: + return *(u8 *)&val; + case 2: + return *(u16 *)&val; + } + return val; +} + +static int vlynq_config_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val) +{ + struct vlynq_device *dev; + struct vlynq_pci_private *priv; + int resno, slot = PCI_SLOT(devfn); + + if ((size == 2) && (where & 1)) + return PCIBIOS_BAD_REGISTER_NUMBER; + else if ((size == 4) && (where & 3)) + return PCIBIOS_BAD_REGISTER_NUMBER; + + if (slot >= VLYNQ_PCI_SLOTS) + return PCIBIOS_DEVICE_NOT_FOUND; + + dev = slots[slot]; + + if (!dev || (PCI_FUNC(devfn) > 0)) + return PCIBIOS_DEVICE_NOT_FOUND; + + priv = dev->priv; + + switch (where) { + case PCI_VENDOR_ID: + *val = vlynq_read(priv->config->chip, size); + break; + case PCI_DEVICE_ID: + *val = priv->config->chip & 0xffff; + case PCI_COMMAND: + *val = priv->command; + case PCI_STATUS: +/* *val = PCI_STATUS_CAP_LIST;*/ + *val = 0; + break; + case PCI_CLASS_REVISION: + *val = priv->config->class; + break; + case PCI_LATENCY_TIMER: + *val = priv->latency; + break; + case PCI_HEADER_TYPE: + *val = PCI_HEADER_TYPE_NORMAL; + break; + case PCI_CACHE_LINE_SIZE: + *val = priv->cache_line; + break; + case PCI_BASE_ADDRESS_0: + case PCI_BASE_ADDRESS_1: + case PCI_BASE_ADDRESS_2: + case PCI_BASE_ADDRESS_3: + resno = (where - PCI_BASE_ADDRESS_0) >> 2; + if (priv->sz_mask & (1 << resno)) { + priv->sz_mask &= ~(1 << resno); + *val = priv->config->rx_mapping[resno].size; + } else { + *val = vlynq_get_mapped(dev, resno); + } + break; + case PCI_BASE_ADDRESS_4: + case PCI_BASE_ADDRESS_5: + case PCI_SUBSYSTEM_VENDOR_ID: + case PCI_SUBSYSTEM_ID: + case PCI_ROM_ADDRESS: + case PCI_INTERRUPT_LINE: + case PCI_CARDBUS_CIS: + case PCI_CAPABILITY_LIST: + *val = 0; + break; + case PCI_INTERRUPT_PIN: + *val = 1; + break; + default: + printk("%s: Read of unknown register 0x%x (size %d)\n", + dev->dev.bus_id, where, size); + return PCIBIOS_BAD_REGISTER_NUMBER; + } + return PCIBIOS_SUCCESSFUL; +} + +static int vlynq_config_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val) +{ + struct vlynq_device *dev; + struct vlynq_pci_private *priv; + int resno, slot = PCI_SLOT(devfn); + + if ((size == 2) && (where & 1)) + return PCIBIOS_BAD_REGISTER_NUMBER; + else if ((size == 4) && (where & 3)) + return PCIBIOS_BAD_REGISTER_NUMBER; + + if (slot >= VLYNQ_PCI_SLOTS) + return PCIBIOS_DEVICE_NOT_FOUND; + + dev = slots[slot]; + + if (!dev || (PCI_FUNC(devfn) > 0)) + return PCIBIOS_DEVICE_NOT_FOUND; + + priv = dev->priv; + + switch (where) { + case PCI_VENDOR_ID: + case PCI_DEVICE_ID: + case PCI_STATUS: + case PCI_CLASS_REVISION: + case PCI_HEADER_TYPE: + case PCI_CACHE_LINE_SIZE: + case PCI_SUBSYSTEM_VENDOR_ID: + case PCI_SUBSYSTEM_ID: + case PCI_INTERRUPT_LINE: + case PCI_INTERRUPT_PIN: + case PCI_CARDBUS_CIS: + case PCI_CAPABILITY_LIST: + return PCIBIOS_FUNC_NOT_SUPPORTED; + case PCI_COMMAND: + priv->command = val; + case PCI_LATENCY_TIMER: + priv->latency = val; + break; + case PCI_BASE_ADDRESS_0: + case PCI_BASE_ADDRESS_1: + case PCI_BASE_ADDRESS_2: + case PCI_BASE_ADDRESS_3: + if (val == 0xffffffff) { + resno = (where - PCI_BASE_ADDRESS_0) >> 2; + priv->sz_mask |= (1 << resno); + break; + } + case PCI_BASE_ADDRESS_4: + case PCI_BASE_ADDRESS_5: + case PCI_ROM_ADDRESS: + break; + default: + printk("%s: Write to unknown register 0x%x (size %d) value=0x%x\n", + dev->dev.bus_id, where, size, val); + return PCIBIOS_BAD_REGISTER_NUMBER; + } + return PCIBIOS_SUCCESSFUL; +} + +static struct pci_ops vlynq_pci_ops = { + vlynq_config_read, + vlynq_config_write +}; + +static struct pci_controller vlynq_controller = { + .pci_ops = &vlynq_pci_ops, + .io_resource = &vlynq_io_resource, + .mem_resource = &vlynq_mem_resource, +}; + +static int vlynq_pci_probe(struct vlynq_device *dev) +{ + int result, i; + u32 chip_id, addr; + struct vlynq_pci_private *priv; + struct vlynq_mapping mapping[4] = { { 0, }, }; + struct vlynq_pci_config *config = NULL; + + result = vlynq_set_local_irq(dev, 31); + if (result) + return result; + + result = vlynq_set_remote_irq(dev, 30); + if (result) + return result; + + result = vlynq_device_enable(dev); + if (result) + return result; + + chip_id = vlynq_remote_id(dev); + for (i = 0; i < ARRAY_SIZE(known_devices); i++) + if (chip_id == known_devices[i].chip_id) + config = &known_devices[i]; + + if (!config) { + printk("vlynq-pci: skipping unknown device " + "%04x:%04x at %s\n", chip_id >> 16, + chip_id & 0xffff, dev->dev.bus_id); + result = -ENODEV; + goto fail; + } + + printk("vlynq-pci: attaching device %s at %s\n", + config->name, dev->dev.bus_id); + + priv = kmalloc(sizeof(struct vlynq_pci_private), GFP_KERNEL); + if (!priv) { + printk(KERN_ERR "%s: failed to allocate private data\n", + dev->dev.bus_id); + result = -ENOMEM; + goto fail; + } + + memset(priv, 0, sizeof(struct vlynq_pci_private)); + priv->latency = 64; + priv->cache_line = 32; + priv->config = config; + + mapping[0].offset = ARCH_PFN_OFFSET << PAGE_SHIFT; + mapping[0].size = 0x02000000; + vlynq_set_local_mapping(dev, dev->mem_start, mapping); + vlynq_set_remote_mapping(dev, 0, config->rx_mapping); + + set_irq_type(vlynq_virq_to_irq(dev, config->irq), config->irq_type); + + addr = (u32)ioremap_nocache(dev->mem_start, 0x10000); + if (!addr) { + printk(KERN_ERR "%s: failed to remap io memory\n", + dev->dev.bus_id); + result = -ENXIO; + goto fail; + } + + for (i = 0; i < config->num_regs; i++) + *(volatile u32 *)(addr + config->regs[i].offset) = + config->regs[i].value; + + dev->priv = priv; + for (i = 0; i < VLYNQ_PCI_SLOTS; i++) { + if (!slots[i]) { + slots[i] = dev; + break; + } + } + + return 0; + +fail: + vlynq_device_disable(dev); + + return result; +} + +static int vlynq_pci_remove(struct vlynq_device *dev) +{ + int i; + struct vlynq_pci_private *priv = dev->priv; + + for (i = 0; i < VLYNQ_PCI_SLOTS; i++) + if (slots[i] == dev) + slots[i] = NULL; + + vlynq_device_disable(dev); + kfree(priv); + + return 0; +} + +static struct vlynq_driver vlynq_pci = { + .name = "PCI over VLYNQ emulation", + .probe = vlynq_pci_probe, + .remove = vlynq_pci_remove, +}; + +int vlynq_pci_init(void) +{ + int res; + res = vlynq_register_driver(&vlynq_pci); + if (res) + return res; + + register_pci_controller(&vlynq_controller); + + return 0; +} + +int pcibios_map_irq(struct pci_dev *pdev, u8 slot, u8 pin) +{ + struct vlynq_device *dev; + struct vlynq_pci_private *priv; + + dev = slots[slot]; + + if (!dev) + return 0; + + priv = dev->priv; + + return vlynq_virq_to_irq(dev, priv->config->irq); +} + +/* Do platform specific device initialization at pci_enable_device() time */ +int pcibios_plat_dev_init(struct pci_dev *dev) +{ + return 0; +} diff --git a/target/linux/ar7/files/arch/mips/ar7/vlynq.c b/target/linux/ar7/files/arch/mips/ar7/vlynq.c new file mode 100644 index 0000000000..c9be214721 --- /dev/null +++ b/target/linux/ar7/files/arch/mips/ar7/vlynq.c @@ -0,0 +1,553 @@ +/* + * $Id$ + * + * Copyright (C) 2006, 2007 OpenWrt.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/init.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/ioport.h> +#include <linux/errno.h> +#include <linux/platform_device.h> +#include <linux/irq.h> +#include <linux/interrupt.h> +#include <linux/device.h> +#include <asm/addrspace.h> +#include <asm/io.h> +#include <asm/ar7/ar7.h> +#include <asm/ar7/vlynq.h> + +#define PER_DEVICE_IRQS 32 + +#define VLYNQ_CTRL_PM_ENABLE 0x80000000 +#define VLYNQ_CTRL_CLOCK_INT 0x00008000 +#define VLYNQ_CTRL_CLOCK_DIV(x) ((x & 7) << 16) +#define VLYNQ_CTRL_INT_LOCAL 0x00004000 +#define VLYNQ_CTRL_INT_ENABLE 0x00002000 +#define VLYNQ_CTRL_INT_VECTOR(x) ((x & 0x1f) << 8) +#define VLYNQ_CTRL_INT2CFG 0x00000080 +#define VLYNQ_CTRL_RESET 0x00000001 + +#define VLYNQ_STATUS_RERROR 0x00000100 +#define VLYNQ_STATUS_LERROR 0x00000080 +#define VLYNQ_STATUS_LINK 0x00000001 + +#define VINT_ENABLE 0x00000100 +#define VINT_TYPE_EDGE 0x00000080 +#define VINT_LEVEL_LOW 0x00000040 +#define VINT_VECTOR(x) (x & 0x1f) +#define VINT_OFFSET(irq) (8 * ((irq) % 4)) + +#define VLYNQ_AUTONEGO_V2 0x00010000 + +struct vlynq_regs { + volatile u32 revision; + volatile u32 control; + volatile u32 status; + volatile u32 int_prio; + volatile u32 int_status; + volatile u32 int_pending; + volatile u32 int_ptr; + volatile u32 tx_offset; + volatile struct vlynq_mapping rx_mapping[4]; + volatile u32 chip; + volatile u32 autonego; + volatile u32 unused[6]; + volatile u32 int_device[8]; +} __attribute__ ((packed)); + +#ifdef VLYNQ_DEBUG +static void vlynq_dump_regs(struct vlynq_device *dev) +{ + int i; + printk("VLYNQ local=%p remote=%p\n", dev->local, dev->remote); + for (i = 0; i < 32; i++) { + printk("VLYNQ: local %d: %08x\n", i + 1, ((u32 *)dev->local)[i]); + printk("VLYNQ: remote %d: %08x\n", i + 1, ((u32 *)dev->remote)[i]); + } +} + +static void vlynq_dump_mem(u32 *base, int count) +{ + int i; + for (i = 0; i < (count + 3) / 4; i++) { + if (i % 4 == 0) printk("\nMEM[0x%04x]:", i * 4); + printk(" 0x%08x", *(base + i)); + } + printk("\n"); +} +#endif + +int vlynq_linked(struct vlynq_device *dev) +{ + int i; + for (i = 0; i < 10; i++) + if (dev->local->status & VLYNQ_STATUS_LINK) { + printk("%s: linked\n", dev->dev.bus_id); + return 1; + } else { + mdelay(1); + } + return 0; +} + +static void vlynq_irq_unmask(unsigned int irq) +{ + volatile u32 val; + struct vlynq_device *dev = irq_desc[irq].chip_data; + int virq; + + BUG_ON(!dev); + virq = irq - dev->irq_start; + val = dev->remote->int_device[virq >> 2]; + val |= (VINT_ENABLE | virq) << VINT_OFFSET(virq); + dev->remote->int_device[virq >> 2] = val; +} + +static void vlynq_irq_mask(unsigned int irq) +{ + volatile u32 val; + struct vlynq_device *dev = irq_desc[irq].chip_data; + int virq; + + BUG_ON(!dev); + virq = irq - dev->irq_start; + val = dev->remote->int_device[virq >> 2]; + val &= ~(VINT_ENABLE << VINT_OFFSET(virq)); + dev->remote->int_device[virq >> 2] = val; +} + +static int vlynq_irq_type(unsigned int irq, unsigned int flow_type) +{ + volatile u32 val; + struct vlynq_device *dev = irq_desc[irq].chip_data; + int virq; + + BUG_ON(!dev); + virq = irq - dev->irq_start; + val = dev->remote->int_device[virq >> 2]; + switch (flow_type & IRQ_TYPE_SENSE_MASK) { + case IRQ_TYPE_EDGE_RISING: + case IRQ_TYPE_EDGE_FALLING: + case IRQ_TYPE_EDGE_BOTH: + val |= VINT_TYPE_EDGE << VINT_OFFSET(virq); + val &= ~(VINT_LEVEL_LOW << VINT_OFFSET(virq)); + break; + case IRQ_TYPE_LEVEL_HIGH: + val &= ~(VINT_TYPE_EDGE << VINT_OFFSET(virq)); + val &= ~(VINT_LEVEL_LOW << VINT_OFFSET(virq)); + break; + case IRQ_TYPE_LEVEL_LOW: + val &= ~(VINT_TYPE_EDGE << VINT_OFFSET(virq)); + val |= VINT_LEVEL_LOW << VINT_OFFSET(virq); + break; + default: + return -EINVAL; + } + dev->remote->int_device[virq >> 2] = val; + return 0; +} + +static irqreturn_t vlynq_irq(int irq, void *dev_id) +{ + struct vlynq_device *dev = dev_id; + u32 status, ack; + int virq = 0; + + status = dev->local->int_status; + dev->local->int_status = status; + + if (status & (1 << dev->local_irq)) { /* Local vlynq IRQ. Ack */ + ack = dev->local->status; + dev->local->status = ack; + } + + if (status & (1 << dev->remote_irq)) { /* Remote vlynq IRQ. Ack */ + ack = dev->remote->status; + dev->remote->status = ack; + } + + status &= ~((1 << dev->local_irq) | (1 << dev->remote_irq)); + while (status) { + if (status & 1) /* Remote device IRQ. Pass. */ + do_IRQ(dev->irq_start + virq); + status >>= 1; + virq++; + } + + return IRQ_HANDLED; +} + +static struct irq_chip vlynq_irq_chip = { + .typename = "VLYNQ", + .name = "vlynq", + .unmask = vlynq_irq_unmask, + .mask = vlynq_irq_mask, + .set_type = vlynq_irq_type, +}; + +static int vlynq_setup_irq(struct vlynq_device *dev) +{ + u32 val; + int i; + + if (dev->local_irq == dev->remote_irq) { + printk("%s: local vlynq irq should be different from remote\n", + dev->dev.bus_id); + return -EINVAL; + } + + val = VLYNQ_CTRL_INT_VECTOR(dev->local_irq); + val |= VLYNQ_CTRL_INT_ENABLE | VLYNQ_CTRL_INT_LOCAL | + VLYNQ_CTRL_INT2CFG; + dev->local->int_ptr = 0x14; + dev->local->control |= val; + + val = VLYNQ_CTRL_INT_VECTOR(dev->remote_irq); + val |= VLYNQ_CTRL_INT_ENABLE; + dev->remote->int_ptr = 0x14; + dev->remote->control |= val; + + for (i = 0; i < PER_DEVICE_IRQS; i++) { + if ((i == dev->local_irq) || (i == dev->remote_irq)) + continue; + irq_desc[dev->irq_start + i].status = IRQ_DISABLED; + irq_desc[dev->irq_start + i].action = 0; + irq_desc[dev->irq_start + i].depth = 1; + irq_desc[dev->irq_start + i].chip = &vlynq_irq_chip; + irq_desc[dev->irq_start + i].chip_data = dev; + dev->remote->int_device[i >> 2] = 0; + } + + if (request_irq(dev->irq, vlynq_irq, SA_SHIRQ, "vlynq", dev)) { + printk("%s: request_irq failed\n", dev->dev.bus_id); + return -EAGAIN; + } + + return 0; +} + +static void vlynq_free_irq(struct vlynq_device *dev) +{ + free_irq(dev->irq, dev); +} + +static void vlynq_device_release(struct device *dev) +{ + struct vlynq_device *vdev = to_vlynq_device(dev); + kfree(vdev); +} + +static int vlynq_device_probe(struct device *dev) +{ + struct vlynq_driver *drv = to_vlynq_driver(dev->driver); + if (drv->probe) + return drv->probe(to_vlynq_device(dev)); + return 0; +} + +static int vlynq_device_remove(struct device *dev) +{ + struct vlynq_driver *drv = to_vlynq_driver(dev->driver); + if (drv->remove) + return drv->remove(to_vlynq_device(dev)); + return 0; +} + +int __vlynq_register_driver(struct vlynq_driver *driver, struct module *owner) +{ + driver->driver.name = driver->name; + driver->driver.bus = &vlynq_bus_type; +/* driver->driver.owner = owner;*/ + return driver_register(&driver->driver); +} +EXPORT_SYMBOL(__vlynq_register_driver); + +void vlynq_unregister_driver(struct vlynq_driver *driver) +{ + driver_unregister(&driver->driver); +} +EXPORT_SYMBOL(vlynq_unregister_driver); + +int vlynq_device_enable(struct vlynq_device *dev) +{ + u32 div; + int result; + struct plat_vlynq_ops *ops = dev->dev.platform_data; + + result = ops->on(dev); + if (result) + return result; + + dev->local->control = 0; + dev->remote->control = 0; + dev->local->control = VLYNQ_CTRL_CLOCK_INT; + + div = ar7_dsp_freq() / 62500000; + if (div != 0 ) { + if (ar7_dsp_freq() / div != 62500000) { + printk(KERN_WARNING + "VLYNQ: Adjusted requested frequency %d to %d\n", + 62500000, ar7_dsp_freq() / div); + } + + printk("VLYNQ: Setting clock to %d (clock divider %u)\n", + ar7_dsp_freq() / div, div); + dev->local->control |= VLYNQ_CTRL_CLOCK_DIV((div - 1)); + } + if (vlynq_linked(dev)) + return vlynq_setup_irq(dev); + + return -ENODEV; +} + +void vlynq_device_disable(struct vlynq_device *dev) +{ + struct plat_vlynq_ops *ops = dev->dev.platform_data; + + vlynq_free_irq(dev); + ops->off(dev); +} + +u32 vlynq_local_id(struct vlynq_device *dev) +{ + return dev->local->chip; +} + +u32 vlynq_remote_id(struct vlynq_device *dev) +{ + return dev->remote->chip; +} + +void vlynq_set_local_mapping(struct vlynq_device *dev, u32 tx_offset, + struct vlynq_mapping *mapping) +{ + int i; + + dev->local->tx_offset = tx_offset; + for (i = 0; i < 4; i++) { + dev->local->rx_mapping[i].offset = mapping[i].offset; + dev->local->rx_mapping[i].size = mapping[i].size; + } +} + +void vlynq_set_remote_mapping(struct vlynq_device *dev, u32 tx_offset, + struct vlynq_mapping *mapping) +{ + int i; + + dev->remote->tx_offset = tx_offset; + for (i = 0; i < 4; i++) { + dev->remote->rx_mapping[i].offset = mapping[i].offset; + dev->remote->rx_mapping[i].size = mapping[i].size; + } +} + +int vlynq_virq_to_irq(struct vlynq_device *dev, int virq) +{ + if ((virq < 0) || (virq >= PER_DEVICE_IRQS)) + return -EINVAL; + + if ((virq == dev->local_irq) || (virq == dev->remote_irq)) + return -EINVAL; + + return dev->irq_start + virq; +} + +int vlynq_irq_to_virq(struct vlynq_device *dev, int irq) +{ + if ((irq < dev->irq_start) || (irq >= dev->irq_start + PER_DEVICE_IRQS)) + return -EINVAL; + + return irq - dev->irq_start; +} + +int vlynq_set_local_irq(struct vlynq_device *dev, int virq) +{ + if ((virq < 0) || (virq >= PER_DEVICE_IRQS)) + return -EINVAL; + + if (virq == dev->remote_irq) + return -EINVAL; + + dev->local_irq = virq; + + return 0; +} + +int vlynq_set_remote_irq(struct vlynq_device *dev, int virq) +{ + if ((virq < 0) || (virq >= PER_DEVICE_IRQS)) + return -EINVAL; + + if (virq == dev->local_irq) + return -EINVAL; + + dev->remote_irq = virq; + + return 0; +} + +static int vlynq_probe(struct platform_device *pdev) +{ + struct vlynq_device *dev; + struct resource *regs_res, *mem_res, *irq_res; + int len, result; + + if (strcmp(pdev->name, "vlynq")) + return -ENODEV; + + regs_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs"); + if (!regs_res) + return -ENODEV; + + mem_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mem"); + if (!mem_res) + return -ENODEV; + + irq_res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "devirq"); + if (!irq_res) + return -ENODEV; + + dev = kmalloc(sizeof(struct vlynq_device), GFP_KERNEL); + if (!dev) { + printk(KERN_ERR "vlynq: failed to allocate device structure\n"); + return -ENOMEM; + } + + memset(dev, 0, sizeof(struct vlynq_device)); + + dev->id = pdev->id; + dev->dev.bus = &vlynq_bus_type; + dev->dev.parent = &pdev->dev; + snprintf(dev->dev.bus_id, BUS_ID_SIZE, "vlynq%d", dev->id); + dev->dev.bus_id[BUS_ID_SIZE - 1] = 0; + dev->dev.platform_data = pdev->dev.platform_data; + dev->dev.release = vlynq_device_release; + + dev->regs_start = regs_res->start; + dev->regs_end = regs_res->end; + dev->mem_start = mem_res->start; + dev->mem_end = mem_res->end; + + len = regs_res->end - regs_res->start; + if (!request_mem_region(regs_res->start, len, dev->dev.bus_id)) { + printk("%s: Can't request vlynq registers\n", dev->dev.bus_id); + result = -ENXIO; + goto fail_request; + } + + dev->local = ioremap_nocache(regs_res->start, len); + if (!dev->local) { + printk("%s: Can't remap vlynq registers\n", dev->dev.bus_id); + result = -ENXIO; + goto fail_remap; + } + + dev->remote = (struct vlynq_regs *)((u32)dev->local + 128); + + dev->irq = platform_get_irq_byname(pdev, "irq"); + dev->irq_start = irq_res->start; + dev->irq_end = irq_res->end; + dev->local_irq = 31; + dev->remote_irq = 30; + + if (device_register(&dev->dev)) + goto fail_register; + platform_set_drvdata(pdev, dev); + + printk("%s: regs 0x%p, irq %d, mem 0x%p\n", + dev->dev.bus_id, (void *)dev->regs_start, dev->irq, + (void *)dev->mem_start); + + return 0; + +fail_register: +fail_remap: + iounmap(dev->local); +fail_request: + release_mem_region(regs_res->start, len); + kfree(dev); + return result; +} + +static int vlynq_remove(struct platform_device *pdev) +{ + struct vlynq_device *dev = platform_get_drvdata(pdev); + + device_unregister(&dev->dev); + release_mem_region(dev->regs_start, dev->regs_end - dev->regs_start); + + kfree(dev); + + return 0; +} + +static struct platform_driver vlynq_driver = { + .driver.name = "vlynq", + .probe = vlynq_probe, + .remove = vlynq_remove, +}; + +struct bus_type vlynq_bus_type = { + .name = "vlynq", + .probe = vlynq_device_probe, + .remove = vlynq_device_remove, +}; +EXPORT_SYMBOL(vlynq_bus_type); + +#ifdef CONFIG_PCI +extern void vlynq_pci_init(void); +#endif +int __init vlynq_init(void) +{ + int res = 0; + + res = bus_register(&vlynq_bus_type); + if (res) + goto fail_bus; + + res = platform_driver_register(&vlynq_driver); + if (res) + goto fail_platform; + +#ifdef CONFIG_PCI + vlynq_pci_init(); +#endif + + return 0; + +fail_platform: + bus_unregister(&vlynq_bus_type); +fail_bus: + return res; +} + +/* +void __devexit vlynq_exit(void) +{ + platform_driver_unregister(&vlynq_driver); + bus_unregister(&vlynq_bus_type); +} +*/ + + +subsys_initcall(vlynq_init); |