# 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
#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[] = {
.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,
};
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,
.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,
};
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),
.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,
};
};
/* 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,
};
--- /dev/null
+/*
+ * 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);
--- /dev/null
+ /*
+ * 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
--- /dev/null
+ /*
+ * 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);
--- /dev/null
+ /*
+ * 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
#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
projects / firefly-linux-kernel-4.4.55.git / commitdiff