diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-omap2/Makefile | 4 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/devices.c | 64 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 22 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap_hwmod_44xx_data.c | 38 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap_l3_noc.c | 253 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap_l3_noc.h | 132 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap_l3_smx.c | 314 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap_l3_smx.h | 338 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/irqs.h | 2 |
9 files changed, 1165 insertions, 2 deletions
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index 1c3635d7f4c..8ef8711eac9 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -135,6 +135,10 @@ obj-$(CONFIG_ARCH_OMAP4) += omap_hwmod_44xx_data.o # EMU peripherals obj-$(CONFIG_OMAP3_EMU) += emu.o +# L3 interconnect +obj-$(CONFIG_ARCH_OMAP3) += omap_l3_smx.o +obj-$(CONFIG_ARCH_OMAP4) += omap_l3_noc.o + obj-$(CONFIG_OMAP_MBOX_FWK) += mailbox_mach.o mailbox_mach-objs := mailbox.o diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c index 2cb720b5b12..0d2d6a9c303 100644 --- a/arch/arm/mach-omap2/devices.c +++ b/arch/arm/mach-omap2/devices.c @@ -36,6 +36,70 @@ #include "mux.h" #include "control.h" +#define L3_MODULES_MAX_LEN 12 +#define L3_MODULES 3 + +static int __init omap3_l3_init(void) +{ + int l; + struct omap_hwmod *oh; + struct omap_device *od; + char oh_name[L3_MODULES_MAX_LEN]; + + /* + * To avoid code running on other OMAPs in + * multi-omap builds + */ + if (!(cpu_is_omap34xx())) + return -ENODEV; + + l = snprintf(oh_name, L3_MODULES_MAX_LEN, "l3_main"); + + oh = omap_hwmod_lookup(oh_name); + + if (!oh) + pr_err("could not look up %s\n", oh_name); + + od = omap_device_build("omap_l3_smx", 0, oh, NULL, 0, + NULL, 0, 0); + + WARN(IS_ERR(od), "could not build omap_device for %s\n", oh_name); + + return PTR_ERR(od); +} +postcore_initcall(omap3_l3_init); + +static int __init omap4_l3_init(void) +{ + int l, i; + struct omap_hwmod *oh[3]; + struct omap_device *od; + char oh_name[L3_MODULES_MAX_LEN]; + + /* + * To avoid code running on other OMAPs in + * multi-omap builds + */ + if (!(cpu_is_omap44xx())) + return -ENODEV; + + for (i = 0; i < L3_MODULES; i++) { + l = snprintf(oh_name, L3_MODULES_MAX_LEN, "l3_main_%d", i+1); + + oh[i] = omap_hwmod_lookup(oh_name); + if (!(oh[i])) + pr_err("could not look up %s\n", oh_name); + } + + od = omap_device_build_ss("omap_l3_noc", 0, oh, 3, NULL, + 0, NULL, 0, 0); + + WARN(IS_ERR(od), "could not build omap_device for %s\n", oh_name); + + return PTR_ERR(od); +} +postcore_initcall(omap4_l3_init); + #if defined(CONFIG_VIDEO_OMAP2) || defined(CONFIG_VIDEO_OMAP2_MODULE) static struct resource cam_resources[] = { diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c index eb48b8c7723..c4ca005f8bb 100644 --- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c @@ -100,10 +100,26 @@ static struct omap_hwmod_ocp_if omap3xxx_l3_main__l4_per = { .user = OCP_USER_MPU | OCP_USER_SDMA, }; +/* L3 taret configuration and error log registers */ +static struct omap_hwmod_irq_info omap3xxx_l3_main_irqs[] = { + { .irq = INT_34XX_L3_DBG_IRQ }, + { .irq = INT_34XX_L3_APP_IRQ }, +}; + +static struct omap_hwmod_addr_space omap3xxx_l3_main_addrs[] = { + { + .pa_start = 0x68000000, + .pa_end = 0x6800ffff, + .flags = ADDR_TYPE_RT, + }, +}; + /* MPU -> L3 interface */ static struct omap_hwmod_ocp_if omap3xxx_mpu__l3_main = { - .master = &omap3xxx_mpu_hwmod, - .slave = &omap3xxx_l3_main_hwmod, + .master = &omap3xxx_mpu_hwmod, + .slave = &omap3xxx_l3_main_hwmod, + .addr = omap3xxx_l3_main_addrs, + .addr_cnt = ARRAY_SIZE(omap3xxx_l3_main_addrs), .user = OCP_USER_MPU, }; @@ -135,6 +151,8 @@ static struct omap_hwmod_ocp_if *omap3xxx_l3_main_masters[] = { static struct omap_hwmod omap3xxx_l3_main_hwmod = { .name = "l3_main", .class = &l3_hwmod_class, + .mpu_irqs = omap3xxx_l3_main_irqs, + .mpu_irqs_cnt = ARRAY_SIZE(omap3xxx_l3_main_irqs), .masters = omap3xxx_l3_main_masters, .masters_cnt = ARRAY_SIZE(omap3xxx_l3_main_masters), .slaves = omap3xxx_l3_main_slaves, diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c index 7b72316781d..3e88dd3f8ef 100644 --- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c @@ -264,11 +264,27 @@ static struct omap_hwmod_ocp_if omap44xx_mmc2__l3_main_1 = { .user = OCP_USER_MPU | OCP_USER_SDMA, }; +/* L3 target configuration and error log registers */ +static struct omap_hwmod_irq_info omap44xx_l3_targ_irqs[] = { + { .irq = 9 + OMAP44XX_IRQ_GIC_START }, + { .irq = 10 + OMAP44XX_IRQ_GIC_START }, +}; + +static struct omap_hwmod_addr_space omap44xx_l3_main_1_addrs[] = { + { + .pa_start = 0x44000000, + .pa_end = 0x44000fff, + .flags = ADDR_TYPE_RT, + }, +}; + /* mpu -> l3_main_1 */ static struct omap_hwmod_ocp_if omap44xx_mpu__l3_main_1 = { .master = &omap44xx_mpu_hwmod, .slave = &omap44xx_l3_main_1_hwmod, .clk = "l3_div_ck", + .addr = omap44xx_l3_main_1_addrs, + .addr_cnt = ARRAY_SIZE(omap44xx_l3_main_1_addrs), .user = OCP_USER_MPU | OCP_USER_SDMA, }; @@ -286,6 +302,8 @@ static struct omap_hwmod_ocp_if *omap44xx_l3_main_1_slaves[] = { static struct omap_hwmod omap44xx_l3_main_1_hwmod = { .name = "l3_main_1", .class = &omap44xx_l3_hwmod_class, + .mpu_irqs = omap44xx_l3_targ_irqs, + .mpu_irqs_cnt = ARRAY_SIZE(omap44xx_l3_targ_irqs), .slaves = omap44xx_l3_main_1_slaves, .slaves_cnt = ARRAY_SIZE(omap44xx_l3_main_1_slaves), .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP4430), @@ -332,11 +350,21 @@ static struct omap_hwmod_ocp_if omap44xx_iva__l3_main_2 = { .user = OCP_USER_MPU | OCP_USER_SDMA, }; +static struct omap_hwmod_addr_space omap44xx_l3_main_2_addrs[] = { + { + .pa_start = 0x44800000, + .pa_end = 0x44801fff, + .flags = ADDR_TYPE_RT, + }, +}; + /* l3_main_1 -> l3_main_2 */ static struct omap_hwmod_ocp_if omap44xx_l3_main_1__l3_main_2 = { .master = &omap44xx_l3_main_1_hwmod, .slave = &omap44xx_l3_main_2_hwmod, .clk = "l3_div_ck", + .addr = omap44xx_l3_main_2_addrs, + .addr_cnt = ARRAY_SIZE(omap44xx_l3_main_2_addrs), .user = OCP_USER_MPU | OCP_USER_SDMA, }; @@ -377,11 +405,21 @@ static struct omap_hwmod omap44xx_l3_main_2_hwmod = { }; /* l3_main_3 interface data */ +static struct omap_hwmod_addr_space omap44xx_l3_main_3_addrs[] = { + { + .pa_start = 0x45000000, + .pa_end = 0x45000fff, + .flags = ADDR_TYPE_RT, + }, +}; + /* l3_main_1 -> l3_main_3 */ static struct omap_hwmod_ocp_if omap44xx_l3_main_1__l3_main_3 = { .master = &omap44xx_l3_main_1_hwmod, .slave = &omap44xx_l3_main_3_hwmod, .clk = "l3_div_ck", + .addr = omap44xx_l3_main_3_addrs, + .addr_cnt = ARRAY_SIZE(omap44xx_l3_main_3_addrs), .user = OCP_USER_MPU | OCP_USER_SDMA, }; diff --git a/arch/arm/mach-omap2/omap_l3_noc.c b/arch/arm/mach-omap2/omap_l3_noc.c new file mode 100644 index 00000000000..82632c24076 --- /dev/null +++ b/arch/arm/mach-omap2/omap_l3_noc.c @@ -0,0 +1,253 @@ +/* + * OMAP4XXX L3 Interconnect error handling driver + * + * Copyright (C) 2011 Texas Corporation + * Santosh Shilimkar <santosh.shilimkar@ti.com> + * Sricharan <r.sricharan@ti.com> + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + */ +#include <linux/init.h> +#include <linux/io.h> +#include <linux/platform_device.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/slab.h> + +#include "omap_l3_noc.h" + +/* + * Interrupt Handler for L3 error detection. + * 1) Identify the L3 clockdomain partition to which the error belongs to. + * 2) Identify the slave where the error information is logged + * 3) Print the logged information. + * 4) Add dump stack to provide kernel trace. + * + * Two Types of errors : + * 1) Custom errors in L3 : + * Target like DMM/FW/EMIF generates SRESP=ERR error + * 2) Standard L3 error: + * - Unsupported CMD. + * L3 tries to access target while it is idle + * - OCP disconnect. + * - Address hole error: + * If DSS/ISS/FDIF/USBHOSTFS access a target where they + * do not have connectivity, the error is logged in + * their default target which is DMM2. + * + * On High Secure devices, firewall errors are possible and those + * can be trapped as well. But the trapping is implemented as part + * secure software and hence need not be implemented here. + */ +static irqreturn_t l3_interrupt_handler(int irq, void *_l3) +{ + + struct omap4_l3 *l3 = _l3; + int inttype, i, j; + int err_src = 0; + u32 std_err_main_addr, std_err_main, err_reg; + u32 base, slave_addr, clear; + char *source_name; + + /* Get the Type of interrupt */ + if (irq == l3->app_irq) + inttype = L3_APPLICATION_ERROR; + else + inttype = L3_DEBUG_ERROR; + + for (i = 0; i < L3_MODULES; i++) { + /* + * Read the regerr register of the clock domain + * to determine the source + */ + base = (u32)l3->l3_base[i]; + err_reg = readl(base + l3_flagmux[i] + (inttype << 3)); + + /* Get the corresponding error and analyse */ + if (err_reg) { + /* Identify the source from control status register */ + for (j = 0; !(err_reg & (1 << j)); j++) + ; + + err_src = j; + /* Read the stderrlog_main_source from clk domain */ + std_err_main_addr = base + (*(l3_targ[i] + err_src)); + std_err_main = readl(std_err_main_addr); + + switch ((std_err_main & CUSTOM_ERROR)) { + case STANDARD_ERROR: + source_name = + l3_targ_stderrlog_main_name[i][err_src]; + + slave_addr = std_err_main_addr + + L3_SLAVE_ADDRESS_OFFSET; + WARN(true, "L3 standard error: SOURCE:%s at address 0x%x\n", + source_name, readl(slave_addr)); + /* clear the std error log*/ + clear = std_err_main | CLEAR_STDERR_LOG; + writel(clear, std_err_main_addr); + break; + + case CUSTOM_ERROR: + source_name = + l3_targ_stderrlog_main_name[i][err_src]; + + WARN(true, "CUSTOM SRESP error with SOURCE:%s\n", + source_name); + /* clear the std error log*/ + clear = std_err_main | CLEAR_STDERR_LOG; + writel(clear, std_err_main_addr); + break; + + default: + /* Nothing to be handled here as of now */ + break; + } + /* Error found so break the for loop */ + break; + } + } + return IRQ_HANDLED; +} + +static int __init omap4_l3_probe(struct platform_device *pdev) +{ + static struct omap4_l3 *l3; + struct resource *res; + int ret; + int irq; + + l3 = kzalloc(sizeof(*l3), GFP_KERNEL); + if (!l3) + ret = -ENOMEM; + + platform_set_drvdata(pdev, l3); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "couldn't find resource 0\n"); + ret = -ENODEV; + goto err1; + } + + l3->l3_base[0] = ioremap(res->start, resource_size(res)); + if (!(l3->l3_base[0])) { + dev_err(&pdev->dev, "ioremap failed\n"); + ret = -ENOMEM; + goto err2; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (!res) { + dev_err(&pdev->dev, "couldn't find resource 1\n"); + ret = -ENODEV; + goto err3; + } + + l3->l3_base[1] = ioremap(res->start, resource_size(res)); + if (!(l3->l3_base[1])) { + dev_err(&pdev->dev, "ioremap failed\n"); + ret = -ENOMEM; + goto err4; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 2); + if (!res) { + dev_err(&pdev->dev, "couldn't find resource 2\n"); + ret = -ENODEV; + goto err5; + } + + l3->l3_base[2] = ioremap(res->start, resource_size(res)); + if (!(l3->l3_base[2])) { + dev_err(&pdev->dev, "ioremap failed\n"); + ret = -ENOMEM; + goto err6; + } + + /* + * Setup interrupt Handlers + */ + irq = platform_get_irq(pdev, 0); + ret = request_irq(irq, + l3_interrupt_handler, + IRQF_DISABLED, "l3-dbg-irq", l3); + if (ret) { + pr_crit("L3: request_irq failed to register for 0x%x\n", + OMAP44XX_IRQ_L3_DBG); + goto err7; + } + l3->debug_irq = irq; + + irq = platform_get_irq(pdev, 1); + ret = request_irq(irq, + l3_interrupt_handler, + IRQF_DISABLED, "l3-app-irq", l3); + if (ret) { + pr_crit("L3: request_irq failed to register for 0x%x\n", + OMAP44XX_IRQ_L3_APP); + goto err8; + } + l3->app_irq = irq; + + goto err0; +err8: +err7: + iounmap(l3->l3_base[2]); +err6: +err5: + iounmap(l3->l3_base[1]); +err4: +err3: + iounmap(l3->l3_base[0]); +err2: +err1: + kfree(l3); +err0: + return ret; +} + +static int __exit omap4_l3_remove(struct platform_device *pdev) +{ + struct omap4_l3 *l3 = platform_get_drvdata(pdev); + + free_irq(l3->app_irq, l3); + free_irq(l3->debug_irq, l3); + iounmap(l3->l3_base[0]); + iounmap(l3->l3_base[1]); + iounmap(l3->l3_base[2]); + kfree(l3); + + return 0; +} + +static struct platform_driver omap4_l3_driver = { + .remove = __exit_p(omap4_l3_remove), + .driver = { + .name = "omap_l3_noc", + }, +}; + +static int __init omap4_l3_init(void) +{ + return platform_driver_probe(&omap4_l3_driver, omap4_l3_probe); +} +postcore_initcall_sync(omap4_l3_init); + +static void __exit omap4_l3_exit(void) +{ + platform_driver_unregister(&omap4_l3_driver); +} +module_exit(omap4_l3_exit); diff --git a/arch/arm/mach-omap2/omap_l3_noc.h b/arch/arm/mach-omap2/omap_l3_noc.h new file mode 100644 index 00000000000..359b83348ae --- /dev/null +++ b/arch/arm/mach-omap2/omap_l3_noc.h @@ -0,0 +1,132 @@ + /* + * OMAP4XXX L3 Interconnect error handling driver header + * + * Copyright (C) 2011 Texas Corporation + * Santosh Shilimkar <santosh.shilimkar@ti.com> + * sricharan <r.sricharan@ti.com> + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + */ +#ifndef __ARCH_ARM_MACH_OMAP2_L3_INTERCONNECT_3XXX_H +#define __ARCH_ARM_MACH_OMAP2_L3_INTERCONNECT_3XXX_H + +/* + * L3 register offsets + */ +#define L3_MODULES 3 +#define CLEAR_STDERR_LOG (1 << 31) +#define CUSTOM_ERROR 0x2 +#define STANDARD_ERROR 0x0 +#define INBAND_ERROR 0x0 +#define EMIF_KERRLOG_OFFSET 0x10 +#define L3_SLAVE_ADDRESS_OFFSET 0x14 +#define LOGICAL_ADDR_ERRORLOG 0x4 +#define L3_APPLICATION_ERROR 0x0 +#define L3_DEBUG_ERROR 0x1 + +u32 l3_flagmux[L3_MODULES] = { + 0x50C, + 0x100C, + 0X020C +}; + +/* + * L3 Target standard Error register offsets + */ +u32 l3_targ_stderrlog_main_clk1[] = { + 0x148, /* DMM1 */ + 0x248, /* DMM2 */ + 0x348, /* ABE */ + 0x448, /* L4CFG */ + 0x648 /* CLK2 PWR DISC */ +}; + +u32 l3_targ_stderrlog_main_clk2[] = { + 0x548, /* CORTEX M3 */ + 0x348, /* DSS */ + 0x148, /* GPMC */ + 0x448, /* ISS */ + 0x748, /* IVAHD */ + 0xD48, /* missing in TRM corresponds to AES1*/ + 0x948, /* L4 PER0*/ + 0x248, /* OCMRAM */ + 0x148, /* missing in TRM corresponds to GPMC sERROR*/ + 0x648, /* SGX */ + 0x848, /* SL2 */ + 0x1648, /* C2C */ + 0x1148, /* missing in TRM corresponds PWR DISC CLK1*/ + 0xF48, /* missing in TRM corrsponds to SHA1*/ + 0xE48, /* missing in TRM corresponds to AES2*/ + 0xC48, /* L4 PER3 */ + 0xA48, /* L4 PER1*/ + 0xB48 /* L4 PER2*/ +}; + +u32 l3_targ_stderrlog_main_clk3[] = { + 0x0148 /* EMUSS */ +}; + +char *l3_targ_stderrlog_main_name[L3_MODULES][18] = { + { + "DMM1", + "DMM2", + "ABE", + "L4CFG", + "CLK2 PWR DISC", + }, + { + "CORTEX M3" , + "DSS ", + "GPMC ", + "ISS ", + "IVAHD ", + "AES1", + "L4 PER0", + "OCMRAM ", + "GPMC sERROR", + "SGX ", + "SL2 ", + "C2C ", + "PWR DISC CLK1", + "SHA1", + "AES2", + "L4 PER3", + "L4 PER1", + "L4 PER2", + }, + { + "EMUSS", + }, +}; + +u32 *l3_targ[L3_MODULES] = { + l3_targ_stderrlog_main_clk1, + l3_targ_stderrlog_main_clk2, + l3_targ_stderrlog_main_clk3, +}; + +struct omap4_l3 { + struct device *dev; + struct clk *ick; + + /* memory base */ + void __iomem *l3_base[4]; + + int debug_irq; + int app_irq; +}; + +#endif diff --git a/arch/arm/mach-omap2/omap_l3_smx.c b/arch/arm/mach-omap2/omap_l3_smx.c new file mode 100644 index 00000000000..265bff3acb9 --- /dev/null +++ b/arch/arm/mach-omap2/omap_l3_smx.c @@ -0,0 +1,314 @@ + /* + * OMAP3XXX L3 Interconnect Driver + * + * Copyright (C) 2011 Texas Corporation + * Felipe Balbi <balbi@ti.com> + * Santosh Shilimkar <santosh.shilimkar@ti.com> + * Sricharan <r.sricharan@ti.com> + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + */ + +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/platform_device.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include "omap_l3_smx.h" + +static inline u64 omap3_l3_readll(void __iomem *base, u16 reg) +{ + return __raw_readll(base + reg); +} + +static inline void omap3_l3_writell(void __iomem *base, u16 reg, u64 value) +{ + __raw_writell(value, base + reg); +} + +static inline enum omap3_l3_code omap3_l3_decode_error_code(u64 error) +{ + return (error & 0x0f000000) >> L3_ERROR_LOG_CODE; +} + +static inline u32 omap3_l3_decode_addr(u64 error_addr) +{ + return error_addr & 0xffffffff; +} + +static inline unsigned omap3_l3_decode_cmd(u64 error) +{ + return (error & 0x07) >> L3_ERROR_LOG_CMD; +} + +static inline enum omap3_l3_initiator_id omap3_l3_decode_initid(u64 error) +{ + return (error & 0xff00) >> L3_ERROR_LOG_INITID; +} + +static inline unsigned omap3_l3_decode_req_info(u64 error) +{ + return (error >> 32) & 0xffff; +} + +static char *omap3_l3_code_string(u8 code) +{ + switch (code) { + case OMAP_L3_CODE_NOERROR: + return "No Error"; + case OMAP_L3_CODE_UNSUP_CMD: + return "Unsupported Command"; + case OMAP_L3_CODE_ADDR_HOLE: + return "Address Hole"; + case OMAP_L3_CODE_PROTECT_VIOLATION: + return "Protection Violation"; + case OMAP_L3_CODE_IN_BAND_ERR: + return "In-band Error"; + case OMAP_L3_CODE_REQ_TOUT_NOT_ACCEPT: + return "Request Timeout Not Accepted"; + case OMAP_L3_CODE_REQ_TOUT_NO_RESP: + return "Request Timeout, no response"; + default: + return "UNKNOWN error"; + } +} + +static char *omap3_l3_initiator_string(u8 initid) +{ + switch (initid) { + case OMAP_L3_LCD: + return "LCD"; + case OMAP_L3_SAD2D: + return "SAD2D"; + case OMAP_L3_IA_MPU_SS_1: + case OMAP_L3_IA_MPU_SS_2: + case OMAP_L3_IA_MPU_SS_3: + case OMAP_L3_IA_MPU_SS_4: + case OMAP_L3_IA_MPU_SS_5: + return "MPU"; + case OMAP_L3_IA_IVA_SS_1: + case OMAP_L3_IA_IVA_SS_2: + case OMAP_L3_IA_IVA_SS_3: + return "IVA_SS"; + case OMAP_L3_IA_IVA_SS_DMA_1: + case OMAP_L3_IA_IVA_SS_DMA_2: + case OMAP_L3_IA_IVA_SS_DMA_3: + case OMAP_L3_IA_IVA_SS_DMA_4: + case OMAP_L3_IA_IVA_SS_DMA_5: + case OMAP_L3_IA_IVA_SS_DMA_6: + return "IVA_SS_DMA"; + case OMAP_L3_IA_SGX: + return "SGX"; + case OMAP_L3_IA_CAM_1: + case OMAP_L3_IA_CAM_2: + case OMAP_L3_IA_CAM_3: + return "CAM"; + case OMAP_L3_IA_DAP: + return "DAP"; + case OMAP_L3_SDMA_WR_1: + case OMAP_L3_SDMA_WR_2: + return "SDMA_WR"; + case OMAP_L3_SDMA_RD_1: + case OMAP_L3_SDMA_RD_2: + case OMAP_L3_SDMA_RD_3: + case OMAP_L3_SDMA_RD_4: + return "SDMA_RD"; + case OMAP_L3_USBOTG: + return "USB_OTG"; + case OMAP_L3_USBHOST: + return "USB_HOST"; + default: + return "UNKNOWN Initiator"; + } +} + +/** + * omap3_l3_block_irq - handles a register block's irq + * @l3: struct omap3_l3 * + * @base: register block base address + * @error: L3_ERROR_LOG register of our block + * + * Called in hard-irq context. Caller should take care of locking + * + * OMAP36xx TRM gives, on page 2001, Figure 9-10, the Typical Error + * Analysis Sequence, we are following that sequence here, please + * refer to that Figure for more information on the subject. + */ +static irqreturn_t omap3_l3_block_irq(struct omap3_l3 *l3, + u64 error, int error_addr) +{ + u8 code = omap3_l3_decode_error_code(error); + u8 initid = omap3_l3_decode_initid(error); + u8 multi = error & L3_ERROR_LOG_MULTI; + u32 address = omap3_l3_decode_addr(error_addr); + + WARN(true, "%s Error seen by %s %s at address %x\n", + omap3_l3_code_string(code), + omap3_l3_initiator_string(initid), + multi ? "Multiple Errors" : "", + address); + + return IRQ_HANDLED; +} + +static irqreturn_t omap3_l3_app_irq(int irq, void *_l3) +{ + struct omap3_l3 *l3 = _l3; + + u64 status, clear; + u64 error; + u64 error_addr; + u64 err_source = 0; + void __iomem *base; + int int_type; + + irqreturn_t ret = IRQ_NONE; + + if (irq == l3->app_irq) + int_type = L3_APPLICATION_ERROR; + else + int_type = L3_DEBUG_ERROR; + + if (!int_type) { + status = omap3_l3_readll(l3->rt, L3_SI_FLAG_STATUS_0); + /* + * if we have a timeout error, there's nothing we can + * do besides rebooting the board. So let's BUG on any + * of such errors and handle the others. timeout error + * is severe and not expected to occur. + */ + BUG_ON(status & L3_STATUS_0_TIMEOUT_MASK); + } else { + status = omap3_l3_readll(l3->rt, L3_SI_FLAG_STATUS_1); + /* No timeout error for debug sources */ + } + + base = ((l3->rt) + (*(omap3_l3_bases[int_type] + err_source))); + + /* identify the error source */ + for (err_source = 0; !(status & (1 << err_source)); err_source++) + ; + error = omap3_l3_readll(base, L3_ERROR_LOG); + + if (error) { + error_addr = omap3_l3_readll(base, L3_ERROR_LOG_ADDR); + + ret |= omap3_l3_block_irq(l3, error, error_addr); + } + + /* Clear the status register */ + clear = ((L3_AGENT_STATUS_CLEAR_IA << int_type) | + (L3_AGENT_STATUS_CLEAR_TA)); + + omap3_l3_writell(base, L3_AGENT_STATUS, clear); + + /* clear the error log register */ + omap3_l3_writell(base, L3_ERROR_LOG, error); + + return ret; +} + +static int __init omap3_l3_probe(struct platform_device *pdev) +{ + struct omap3_l3 *l3; + struct resource *res; + int ret; + int irq; + + l3 = kzalloc(sizeof(*l3), GFP_KERNEL); + if (!l3) { + ret = -ENOMEM; + goto err0; + } + + platform_set_drvdata(pdev, l3); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "couldn't find resource\n"); + ret = -ENODEV; + goto err1; + } + l3->rt = ioremap(res->start, resource_size(res)); + if (!(l3->rt)) { + dev_err(&pdev->dev, "ioremap failed\n"); + ret = -ENOMEM; + goto err2; + } + + irq = platform_get_irq(pdev, 0); + ret = request_irq(irq, omap3_l3_app_irq, + IRQF_DISABLED | IRQF_TRIGGER_RISING, + "l3-debug-irq", l3); + if (ret) { + dev_err(&pdev->dev, "couldn't request debug irq\n"); + goto err3; + } + l3->debug_irq = irq; + + irq = platform_get_irq(pdev, 1); + ret = request_irq(irq, omap3_l3_app_irq, + IRQF_DISABLED | IRQF_TRIGGER_RISING, + "l3-app-irq", l3); + + if (ret) { + dev_err(&pdev->dev, "couldn't request app irq\n"); + goto err4; + } + + l3->app_irq = irq; + goto err0; + +err4: +err3: + iounmap(l3->rt); +err2: +err1: + kfree(l3); +err0: + return ret; +} + +static int __exit omap3_l3_remove(struct platform_device *pdev) +{ + struct omap3_l3 *l3 = platform_get_drvdata(pdev); + + free_irq(l3->app_irq, l3); + free_irq(l3->debug_irq, l3); + iounmap(l3->rt); + kfree(l3); + + return 0; +} + +static struct platform_driver omap3_l3_driver = { + .remove = __exit_p(omap3_l3_remove), + .driver = { + .name = "omap_l3_smx", + }, +}; + +static int __init omap3_l3_init(void) +{ + return platform_driver_probe(&omap3_l3_driver, omap3_l3_probe); +} +postcore_initcall_sync(omap3_l3_init); + +static void __exit omap3_l3_exit(void) +{ + platform_driver_unregister(&omap3_l3_driver); +} +module_exit(omap3_l3_exit); diff --git a/arch/arm/mach-omap2/omap_l3_smx.h b/arch/arm/mach-omap2/omap_l3_smx.h new file mode 100644 index 00000000000..ba2ed9a850c --- /dev/null +++ b/arch/arm/mach-omap2/omap_l3_smx.h @@ -0,0 +1,338 @@ + /* + * OMAP3XXX L3 Interconnect Driver header + * + * Copyright (C) 2011 Texas Corporation + * Felipe Balbi <balbi@ti.com> + * Santosh Shilimkar <santosh.shilimkar@ti.com> + * sricharan <r.sricharan@ti.com> + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + */ +#ifndef __ARCH_ARM_MACH_OMAP2_L3_INTERCONNECT_3XXX_H +#define __ARCH_ARM_MACH_OMAP2_L3_INTERCONNECT_3XXX_H + +/* Register definitions. All 64-bit wide */ +#define L3_COMPONENT 0x000 +#define L3_CORE 0x018 +#define L3_AGENT_CONTROL 0x020 +#define L3_AGENT_STATUS 0x028 +#define L3_ERROR_LOG 0x058 + +#define L3_ERROR_LOG_MULTI (1 << 31) +#define L3_ERROR_LOG_SECONDARY (1 << 30) + +#define L3_ERROR_LOG_ADDR 0x060 + +/* Register definitions for Sideband Interconnect */ +#define L3_SI_CONTROL 0x020 +#define L3_SI_FLAG_STATUS_0 0x510 + +const u64 shift = 1; + +#define L3_STATUS_0_MPUIA_BRST (shift << 0) +#define L3_STATUS_0_MPUIA_RSP (shift << 1) +#define L3_STATUS_0_MPUIA_INBAND (shift << 2) +#define L3_STATUS_0_IVAIA_BRST (shift << 6) +#define L3_STATUS_0_IVAIA_RSP (shift << 7) +#define L3_STATUS_0_IVAIA_INBAND (shift << 8) +#define L3_STATUS_0_SGXIA_BRST (shift << 9) +#define L3_STATUS_0_SGXIA_RSP (shift << 10) +#define L3_STATUS_0_SGXIA_MERROR (shift << 11) +#define L3_STATUS_0_CAMIA_BRST (shift << 12) +#define L3_STATUS_0_CAMIA_RSP (shift << 13) +#define L3_STATUS_0_CAMIA_INBAND (shift << 14) +#define L3_STATUS_0_DISPIA_BRST (shift << 15) +#define L3_STATUS_0_DISPIA_RSP (shift << 16) +#define L3_STATUS_0_DMARDIA_BRST (shift << 18) +#define L3_STATUS_0_DMARDIA_RSP (shift << 19) +#define L3_STATUS_0_DMAWRIA_BRST (shift << 21) +#define L3_STATUS_0_DMAWRIA_RSP (shift << 22) +#define L3_STATUS_0_USBOTGIA_BRST (shift << 24) +#define L3_STATUS_0_USBOTGIA_RSP (shift << 25) +#define L3_STATUS_0_USBOTGIA_INBAND (shift << 26) +#define L3_STATUS_0_USBHOSTIA_BRST (shift << 27) +#define L3_STATUS_0_USBHOSTIA_INBAND (shift << 28) +#define L3_STATUS_0_SMSTA_REQ (shift << 48) +#define L3_STATUS_0_GPMCTA_REQ (shift << 49) +#define L3_STATUS_0_OCMRAMTA_REQ (shift << 50) +#define L3_STATUS_0_OCMROMTA_REQ (shift << 51) +#define L3_STATUS_0_IVATA_REQ (shift << 54) +#define L3_STATUS_0_SGXTA_REQ (shift << 55) +#define L3_STATUS_0_SGXTA_SERROR (shift << 56) +#define L3_STATUS_0_GPMCTA_SERROR (shift << 57) +#define L3_STATUS_0_L4CORETA_REQ (shift << 58) +#define L3_STATUS_0_L4PERTA_REQ (shift << 59) +#define L3_STATUS_0_L4EMUTA_REQ (shift << 60) +#define L3_STATUS_0_MAD2DTA_REQ (shift << 61) + +#define L3_STATUS_0_TIMEOUT_MASK (L3_STATUS_0_MPUIA_BRST \ + | L3_STATUS_0_MPUIA_RSP \ + | L3_STATUS_0_IVAIA_BRST \ + | L3_STATUS_0_IVAIA_RSP \ + | L3_STATUS_0_SGXIA_BRST \ + | L3_STATUS_0_SGXIA_RSP \ + | L3_STATUS_0_CAMIA_BRST \ + | L3_STATUS_0_CAMIA_RSP \ + | L3_STATUS_0_DISPIA_BRST \ + | L3_STATUS_0_DISPIA_RSP \ + | L3_STATUS_0_DMARDIA_BRST \ + | L3_STATUS_0_DMARDIA_RSP \ + | L3_STATUS_0_DMAWRIA_BRST \ + | L3_STATUS_0_DMAWRIA_RSP \ + | L3_STATUS_0_USBOTGIA_BRST \ + | L3_STATUS_0_USBOTGIA_RSP \ + | L3_STATUS_0_USBHOSTIA_BRST \ + | L3_STATUS_0_SMSTA_REQ \ + | L3_STATUS_0_GPMCTA_REQ \ + | L3_STATUS_0_OCMRAMTA_REQ \ + | L3_STATUS_0_OCMROMTA_REQ \ + | L3_STATUS_0_IVATA_REQ \ + | L3_STATUS_0_SGXTA_REQ \ + | L3_STATUS_0_L4CORETA_REQ \ + | L3_STATUS_0_L4PERTA_REQ \ + | L3_STATUS_0_L4EMUTA_REQ \ + | L3_STATUS_0_MAD2DTA_REQ) + +#define L3_SI_FLAG_STATUS_1 0x530 + +#define L3_STATUS_1_MPU_DATAIA (1 << 0) +#define L3_STATUS_1_DAPIA0 (1 << 3) +#define L3_STATUS_1_DAPIA1 (1 << 4) +#define L3_STATUS_1_IVAIA (1 << 6) + +#define L3_PM_ERROR_LOG 0x020 +#define L3_PM_CONTROL 0x028 +#define L3_PM_ERROR_CLEAR_SINGLE 0x030 +#define L3_PM_ERROR_CLEAR_MULTI 0x038 +#define L3_PM_REQ_INFO_PERMISSION(n) (0x048 + (0x020 * n)) +#define L3_PM_READ_PERMISSION(n) (0x050 + (0x020 * n)) +#define L3_PM_WRITE_PERMISSION(n) (0x058 + (0x020 * n)) +#define L3_PM_ADDR_MATCH(n) (0x060 + (0x020 * n)) + +/* L3 error log bit fields. Common for IA and TA */ +#define L3_ERROR_LOG_CODE 24 +#define L3_ERROR_LOG_INITID 8 +#define L3_ERROR_LOG_CMD 0 + +/* L3 agent status bit fields. */ +#define L3_AGENT_STATUS_CLEAR_IA 0x10000000 +#define L3_AGENT_STATUS_CLEAR_TA 0x01000000 + +#define OMAP34xx_IRQ_L3_APP 10 +#define L3_APPLICATION_ERROR 0x0 +#define L3_DEBUG_ERROR 0x1 + +enum omap3_l3_initiator_id { + /* LCD has 1 ID */ + OMAP_L3_LCD = 29, + /* SAD2D has 1 ID */ + OMAP_L3_SAD2D = 28, + /* MPU has 5 IDs */ + OMAP_L3_IA_MPU_SS_1 = 27, + OMAP_L3_IA_MPU_SS_2 = 26, + OMAP_L3_IA_MPU_SS_3 = 25, + OMAP_L3_IA_MPU_SS_4 = 24, + OMAP_L3_IA_MPU_SS_5 = 23, + /* IVA2.2 SS has 3 IDs*/ + OMAP_L3_IA_IVA_SS_1 = 22, + OMAP_L3_IA_IVA_SS_2 = 21, + OMAP_L3_IA_IVA_SS_3 = 20, + /* IVA 2.2 SS DMA has 6 IDS */ + OMAP_L3_IA_IVA_SS_DMA_1 = 19, + OMAP_L3_IA_IVA_SS_DMA_2 = 18, + OMAP_L3_IA_IVA_SS_DMA_3 = 17, + OMAP_L3_IA_IVA_SS_DMA_4 = 16, + OMAP_L3_IA_IVA_SS_DMA_5 = 15, + OMAP_L3_IA_IVA_SS_DMA_6 = 14, + /* SGX has 1 ID */ + OMAP_L3_IA_SGX = 13, + /* CAM has 3 ID */ + OMAP_L3_IA_CAM_1 = 12, + OMAP_L3_IA_CAM_2 = 11, + OMAP_L3_IA_CAM_3 = 10, + /* DAP has 1 ID */ + OMAP_L3_IA_DAP = 9, + /* SDMA WR has 2 IDs */ + OMAP_L3_SDMA_WR_1 = 8, + OMAP_L3_SDMA_WR_2 = 7, + /* SDMA RD has 4 IDs */ + OMAP_L3_SDMA_RD_1 = 6, + OMAP_L3_SDMA_RD_2 = 5, + OMAP_L3_SDMA_RD_3 = 4, + OMAP_L3_SDMA_RD_4 = 3, + /* HSUSB OTG has 1 ID */ + OMAP_L3_USBOTG = 2, + /* HSUSB HOST has 1 ID */ + OMAP_L3_USBHOST = 1, +}; + +enum omap3_l3_code { + OMAP_L3_CODE_NOERROR = 0, + OMAP_L3_CODE_UNSUP_CMD = 1, + OMAP_L3_CODE_ADDR_HOLE = 2, + OMAP_L3_CODE_PROTECT_VIOLATION = 3, + OMAP_L3_CODE_IN_BAND_ERR = 4, + /* codes 5 and 6 are reserved */ + OMAP_L3_CODE_REQ_TOUT_NOT_ACCEPT = 7, + OMAP_L3_CODE_REQ_TOUT_NO_RESP = 8, + /* codes 9 - 15 are also reserved */ +}; + +struct omap3_l3 { + struct device *dev; + struct clk *ick; + + /* memory base*/ + void __iomem *rt; + + int debug_irq; + int app_irq; + + /* true when and inband functional error occurs */ + unsigned inband:1; +}; + +/* offsets for l3 agents in order with the Flag status register */ +unsigned int __iomem omap3_l3_app_bases[] = { + /* MPU IA */ + 0x1400, + 0x1400, + 0x1400, + /* RESERVED */ + 0, + 0, + 0, + /* IVA 2.2 IA */ + 0x1800, + 0x1800, + 0x1800, + /* SGX IA */ + 0x1c00, + 0x1c00, + /* RESERVED */ + 0, + /* CAMERA IA */ + 0x5800, + 0x5800, + 0x5800, + /* DISPLAY IA */ + 0x5400, + 0x5400, + /* RESERVED */ + 0, + /*SDMA RD IA */ + 0x4c00, + 0x4c00, + /* RESERVED */ + 0, + /* SDMA WR IA */ + 0x5000, + 0x5000, + /* RESERVED */ + 0, + /* USB OTG IA */ + 0x4400, + 0x4400, + 0x4400, + /* USB HOST IA */ + 0x4000, + 0x4000, + /* RESERVED */ + 0, + 0, + 0, + 0, + /* SAD2D IA */ + 0x3000, + 0x3000, + 0x3000, + /* RESERVED */ + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + /* SMA TA */ + 0x2000, + /* GPMC TA */ + 0x2400, + /* OCM RAM TA */ + 0x2800, + /* OCM ROM TA */ + 0x2C00, + /* L4 CORE TA */ + 0x6800, + /* L4 PER TA */ + 0x6c00, + /* IVA 2.2 TA */ + 0x6000, + /* SGX TA */ + 0x6400, + /* L4 EMU TA */ + 0x7000, + /* GPMC TA */ + 0x2400, + /* L4 CORE TA */ + 0x6800, + /* L4 PER TA */ + 0x6c00, + /* L4 EMU TA */ + 0x7000, + /* MAD2D TA */ + 0x3400, + /* RESERVED */ + 0, + 0, +}; + +unsigned int __iomem omap3_l3_debug_bases[] = { + /* MPU DATA IA */ + 0x1400, + /* RESERVED */ + 0, + 0, + /* DAP IA */ + 0x5c00, + 0x5c00, + /* RESERVED */ + 0, + /* IVA 2.2 IA */ + 0x1800, + /* REST RESERVED */ +}; + +u32 *omap3_l3_bases[] = { + omap3_l3_app_bases, + omap3_l3_debug_bases, +}; + +/* + * REVISIT define __raw_readll/__raw_writell here, but move them to + * <asm/io.h> at some point + */ +#define __raw_writell(v, a) (__chk_io_ptr(a), \ + *(volatile u64 __force *)(a) = (v)) +#define __raw_readll(a) (__chk_io_ptr(a), \ + *(volatile u64 __force *)(a)) + +#endif diff --git a/arch/arm/plat-omap/include/plat/irqs.h b/arch/arm/plat-omap/include/plat/irqs.h index 1b911681e91..d7792837046 100644 --- a/arch/arm/plat-omap/include/plat/irqs.h +++ b/arch/arm/plat-omap/include/plat/irqs.h @@ -315,6 +315,8 @@ #define INT_34XX_SSM_ABORT_IRQ 6 #define INT_34XX_SYS_NIRQ 7 #define INT_34XX_D2D_FW_IRQ 8 +#define INT_34XX_L3_DBG_IRQ 9 +#define INT_34XX_L3_APP_IRQ 10 #define INT_34XX_PRCM_MPU_IRQ 11 #define INT_34XX_MCBSP1_IRQ 16 #define INT_34XX_MCBSP2_IRQ 17 |