msm: smem: split out shared memory functionality
For historical reasons, the low level shared memory functionality exists in
a combined driver with the higher level communication protocols. Move the
low level shared memory functionality out into its own driver to improve
clarity and ease maintenance.
Change-Id: Ie55ecda7ef923c1f19a277ba8a47660f7a14e7b5
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>
diff --git a/arch/arm/mach-msm/Makefile b/arch/arm/mach-msm/Makefile
index 321040e..400f859 100644
--- a/arch/arm/mach-msm/Makefile
+++ b/arch/arm/mach-msm/Makefile
@@ -75,7 +75,7 @@
$(obj)/smd_rpc_sym.c: $(src)/smd_rpc_sym $(src)/mkrpcsym.pl
$(call if_changed,mkrpcsym)
-obj-$(CONFIG_MSM_SMD) += smd.o smd_debug.o remote_spinlock.o smd_private.o
+obj-$(CONFIG_MSM_SMD) += smd.o smd_debug.o remote_spinlock.o smd_private.o smem.o
obj-$(CONFIG_MSM_SMP2P) += smp2p.o smp2p_debug.o smp2p_gpio.o
obj-$(CONFIG_MSM_SMP2P_TEST) += smp2p_loopback.o smp2p_test.o smp2p_gpio_test.o smp2p_spinlock_test.o
obj-$(CONFIG_MSM_SCM) += scm.o scm-boot.o
diff --git a/arch/arm/mach-msm/clock-pll.c b/arch/arm/mach-msm/clock-pll.c
index d2be1f9..8d99ad1 100644
--- a/arch/arm/mach-msm/clock-pll.c
+++ b/arch/arm/mach-msm/clock-pll.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2012, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2013, The Linux Foundation. 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 version 2 and
@@ -19,10 +19,10 @@
#include <mach/scm-io.h>
#include <mach/msm_iomap.h>
+#include <mach/msm_smem.h>
#include "clock.h"
#include "clock-pll.h"
-#include "smd_private.h"
#ifdef CONFIG_MSM_SECURE_IO
#undef readl_relaxed
diff --git a/arch/arm/mach-msm/include/mach/msm_smd.h b/arch/arm/mach-msm/include/mach/msm_smd.h
index d155c6f..2cc7b10 100644
--- a/arch/arm/mach-msm/include/mach/msm_smd.h
+++ b/arch/arm/mach-msm/include/mach/msm_smd.h
@@ -19,7 +19,9 @@
#define __ASM_ARCH_MSM_SMD_H
#include <linux/io.h>
-#include <mach/msm_smsm.h>
+#include <linux/notifier.h>
+
+#include <mach/msm_smem.h>
typedef struct smd_channel smd_channel_t;
@@ -40,13 +42,13 @@
* SMD, the entry will only exist in this enum.
*/
enum {
- SMD_APPS = SMSM_APPS,
- SMD_MODEM = SMSM_MODEM,
- SMD_Q6 = SMSM_Q6,
- SMD_WCNSS = SMSM_WCNSS,
- SMD_DSPS = SMSM_DSPS,
- SMD_MODEM_Q6_FW,
- SMD_RPM,
+ SMD_APPS = SMEM_APPS,
+ SMD_MODEM = SMEM_MODEM,
+ SMD_Q6 = SMEM_Q6,
+ SMD_DSPS = SMEM_DSPS,
+ SMD_WCNSS = SMEM_WCNSS,
+ SMD_MODEM_Q6_FW = SMEM_MODEM_Q6_FW,
+ SMD_RPM = SMEM_RPM,
NUM_SMD_SUBSYSTEMS,
};
diff --git a/arch/arm/mach-msm/include/mach/msm_smem.h b/arch/arm/mach-msm/include/mach/msm_smem.h
new file mode 100644
index 0000000..57f22cc
--- /dev/null
+++ b/arch/arm/mach-msm/include/mach/msm_smem.h
@@ -0,0 +1,180 @@
+/* Copyright (c) 2013, The Linux Foundation. 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 version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+#ifndef _ARCH_ARM_MACH_MSM_SMEM_H_
+#define _ARCH_ARM_MACH_MSM_SMEM_H_
+
+#include <linux/types.h>
+
+enum {
+ SMEM_APPS,
+ SMEM_MODEM,
+ SMEM_Q6,
+ SMEM_DSPS,
+ SMEM_WCNSS,
+ SMEM_MODEM_Q6_FW,
+ SMEM_RPM,
+ NUM_SMEM_SUBSYSTEMS,
+};
+
+#define SMEM_NUM_SMD_STREAM_CHANNELS 64
+#define SMEM_NUM_SMD_BLOCK_CHANNELS 64
+
+enum {
+ /* fixed items */
+ SMEM_PROC_COMM = 0,
+ SMEM_HEAP_INFO,
+ SMEM_ALLOCATION_TABLE,
+ SMEM_VERSION_INFO,
+ SMEM_HW_RESET_DETECT,
+ SMEM_AARM_WARM_BOOT,
+ SMEM_DIAG_ERR_MESSAGE,
+ SMEM_SPINLOCK_ARRAY,
+ SMEM_MEMORY_BARRIER_LOCATION,
+ SMEM_FIXED_ITEM_LAST = SMEM_MEMORY_BARRIER_LOCATION,
+
+ /* dynamic items */
+ SMEM_AARM_PARTITION_TABLE,
+ SMEM_AARM_BAD_BLOCK_TABLE,
+ SMEM_RESERVE_BAD_BLOCKS,
+ SMEM_WM_UUID,
+ SMEM_CHANNEL_ALLOC_TBL,
+ SMEM_SMD_BASE_ID,
+ SMEM_SMEM_LOG_IDX = SMEM_SMD_BASE_ID + SMEM_NUM_SMD_STREAM_CHANNELS,
+ SMEM_SMEM_LOG_EVENTS,
+ SMEM_SMEM_STATIC_LOG_IDX,
+ SMEM_SMEM_STATIC_LOG_EVENTS,
+ SMEM_SMEM_SLOW_CLOCK_SYNC,
+ SMEM_SMEM_SLOW_CLOCK_VALUE,
+ SMEM_BIO_LED_BUF,
+ SMEM_SMSM_SHARED_STATE,
+ SMEM_SMSM_INT_INFO,
+ SMEM_SMSM_SLEEP_DELAY,
+ SMEM_SMSM_LIMIT_SLEEP,
+ SMEM_SLEEP_POWER_COLLAPSE_DISABLED,
+ SMEM_KEYPAD_KEYS_PRESSED,
+ SMEM_KEYPAD_STATE_UPDATED,
+ SMEM_KEYPAD_STATE_IDX,
+ SMEM_GPIO_INT,
+ SMEM_MDDI_LCD_IDX,
+ SMEM_MDDI_HOST_DRIVER_STATE,
+ SMEM_MDDI_LCD_DISP_STATE,
+ SMEM_LCD_CUR_PANEL,
+ SMEM_MARM_BOOT_SEGMENT_INFO,
+ SMEM_AARM_BOOT_SEGMENT_INFO,
+ SMEM_SLEEP_STATIC,
+ SMEM_SCORPION_FREQUENCY,
+ SMEM_SMD_PROFILES,
+ SMEM_TSSC_BUSY,
+ SMEM_HS_SUSPEND_FILTER_INFO,
+ SMEM_BATT_INFO,
+ SMEM_APPS_BOOT_MODE,
+ SMEM_VERSION_FIRST,
+ SMEM_VERSION_SMD = SMEM_VERSION_FIRST,
+ SMEM_VERSION_LAST = SMEM_VERSION_FIRST + 24,
+ SMEM_OSS_RRCASN1_BUF1,
+ SMEM_OSS_RRCASN1_BUF2,
+ SMEM_ID_VENDOR0,
+ SMEM_ID_VENDOR1,
+ SMEM_ID_VENDOR2,
+ SMEM_HW_SW_BUILD_ID,
+ SMEM_SMD_BLOCK_PORT_BASE_ID,
+ SMEM_SMD_BLOCK_PORT_PROC0_HEAP = SMEM_SMD_BLOCK_PORT_BASE_ID +
+ SMEM_NUM_SMD_BLOCK_CHANNELS,
+ SMEM_SMD_BLOCK_PORT_PROC1_HEAP = SMEM_SMD_BLOCK_PORT_PROC0_HEAP +
+ SMEM_NUM_SMD_BLOCK_CHANNELS,
+ SMEM_I2C_MUTEX = SMEM_SMD_BLOCK_PORT_PROC1_HEAP +
+ SMEM_NUM_SMD_BLOCK_CHANNELS,
+ SMEM_SCLK_CONVERSION,
+ SMEM_SMD_SMSM_INTR_MUX,
+ SMEM_SMSM_CPU_INTR_MASK,
+ SMEM_APPS_DEM_SLAVE_DATA,
+ SMEM_QDSP6_DEM_SLAVE_DATA,
+ SMEM_CLKREGIM_BSP,
+ SMEM_CLKREGIM_SOURCES,
+ SMEM_SMD_FIFO_BASE_ID,
+ SMEM_USABLE_RAM_PARTITION_TABLE = SMEM_SMD_FIFO_BASE_ID +
+ SMEM_NUM_SMD_STREAM_CHANNELS,
+ SMEM_POWER_ON_STATUS_INFO,
+ SMEM_DAL_AREA,
+ SMEM_SMEM_LOG_POWER_IDX,
+ SMEM_SMEM_LOG_POWER_WRAP,
+ SMEM_SMEM_LOG_POWER_EVENTS,
+ SMEM_ERR_CRASH_LOG,
+ SMEM_ERR_F3_TRACE_LOG,
+ SMEM_SMD_BRIDGE_ALLOC_TABLE,
+ SMEM_SMDLITE_TABLE,
+ SMEM_SD_IMG_UPGRADE_STATUS,
+ SMEM_SEFS_INFO,
+ SMEM_RESET_LOG,
+ SMEM_RESET_LOG_SYMBOLS,
+ SMEM_MODEM_SW_BUILD_ID,
+ SMEM_SMEM_LOG_MPROC_WRAP,
+ SMEM_BOOT_INFO_FOR_APPS,
+ SMEM_SMSM_SIZE_INFO,
+ SMEM_SMD_LOOPBACK_REGISTER,
+ SMEM_SSR_REASON_MSS0,
+ SMEM_SSR_REASON_WCNSS0,
+ SMEM_SSR_REASON_LPASS0,
+ SMEM_SSR_REASON_DSPS0,
+ SMEM_SSR_REASON_VCODEC0,
+ SMEM_SMP2P_APPS_BASE = 427,
+ SMEM_SMP2P_MODEM_BASE = SMEM_SMP2P_APPS_BASE + 8, /* 435 */
+ SMEM_SMP2P_AUDIO_BASE = SMEM_SMP2P_MODEM_BASE + 8, /* 443 */
+ SMEM_SMP2P_WIRLESS_BASE = SMEM_SMP2P_AUDIO_BASE + 8, /* 451 */
+ SMEM_SMP2P_POWER_BASE = SMEM_SMP2P_WIRLESS_BASE + 8, /* 459 */
+ SMEM_FLASH_DEVICE_INFO = SMEM_SMP2P_POWER_BASE + 8, /* 467 */
+ SMEM_BAM_PIPE_MEMORY, /* 468 */
+ SMEM_IMAGE_VERSION_TABLE, /* 469 */
+ SMEM_LC_DEBUGGER, /* 470 */
+ SMEM_NUM_ITEMS,
+};
+
+#ifdef CONFIG_MSM_SMD
+void *smem_alloc(unsigned id, unsigned size);
+void *smem_alloc2(unsigned id, unsigned size_in);
+void *smem_get_entry(unsigned id, unsigned *size);
+void *smem_find(unsigned id, unsigned size);
+/**
+ * smem_virt_to_phys() - Convert SMEM address to physical address.
+ *
+ * @smem_address: Virtual address returned by smem_alloc()/smem_alloc2()
+ * @returns: Physical address (or NULL if there is a failure)
+ *
+ * This function should only be used if an SMEM item needs to be handed
+ * off to a DMA engine.
+ */
+phys_addr_t smem_virt_to_phys(void *smem_address);
+
+#else
+static inline void *smem_alloc(unsigned id, unsigned size)
+{
+ return NULL;
+}
+static inline void *smem_alloc2(unsigned id, unsigned size_in)
+{
+ return NULL;
+}
+static inline void *smem_get_entry(unsigned id, unsigned *size)
+{
+ return NULL;
+}
+static inline void *smem_find(unsigned id, unsigned size)
+{
+ return NULL;
+}
+static inline phys_addr_t smem_virt_to_phys(void *smem_address)
+{
+ return (phys_addr_t) NULL;
+}
+#endif /* CONFIG_MSM_SMD */
+#endif /* _ARCH_ARM_MACH_MSM_SMEM_H_ */
diff --git a/arch/arm/mach-msm/include/mach/msm_smsm.h b/arch/arm/mach-msm/include/mach/msm_smsm.h
index 5173c12..733f5a9 100644
--- a/arch/arm/mach-msm/include/mach/msm_smsm.h
+++ b/arch/arm/mach-msm/include/mach/msm_smsm.h
@@ -14,6 +14,9 @@
#define _ARCH_ARM_MACH_MSM_SMSM_H_
#include <linux/notifier.h>
+
+#include <mach/msm_smem.h>
+
#if defined(CONFIG_MSM_N_WAY_SMSM)
enum {
SMSM_APPS_STATE,
@@ -37,11 +40,11 @@
#endif
enum {
- SMSM_APPS,
- SMSM_MODEM,
- SMSM_Q6,
- SMSM_WCNSS,
- SMSM_DSPS,
+ SMSM_APPS = SMEM_APPS,
+ SMSM_MODEM = SMEM_MODEM,
+ SMSM_Q6 = SMEM_Q6,
+ SMSM_DSPS = SMEM_DSPS,
+ SMSM_WCNSS = SMEM_WCNSS,
};
extern uint32_t SMSM_NUM_HOSTS;
@@ -97,119 +100,6 @@
#define SMSM_SUBSYS2AP_STATUS 0x00008000
-#define SMEM_NUM_SMD_STREAM_CHANNELS 64
-#define SMEM_NUM_SMD_BLOCK_CHANNELS 64
-
-enum {
- /* fixed items */
- SMEM_PROC_COMM = 0,
- SMEM_HEAP_INFO,
- SMEM_ALLOCATION_TABLE,
- SMEM_VERSION_INFO,
- SMEM_HW_RESET_DETECT,
- SMEM_AARM_WARM_BOOT,
- SMEM_DIAG_ERR_MESSAGE,
- SMEM_SPINLOCK_ARRAY,
- SMEM_MEMORY_BARRIER_LOCATION,
- SMEM_FIXED_ITEM_LAST = SMEM_MEMORY_BARRIER_LOCATION,
-
- /* dynamic items */
- SMEM_AARM_PARTITION_TABLE,
- SMEM_AARM_BAD_BLOCK_TABLE,
- SMEM_RESERVE_BAD_BLOCKS,
- SMEM_WM_UUID,
- SMEM_CHANNEL_ALLOC_TBL,
- SMEM_SMD_BASE_ID,
- SMEM_SMEM_LOG_IDX = SMEM_SMD_BASE_ID + SMEM_NUM_SMD_STREAM_CHANNELS,
- SMEM_SMEM_LOG_EVENTS,
- SMEM_SMEM_STATIC_LOG_IDX,
- SMEM_SMEM_STATIC_LOG_EVENTS,
- SMEM_SMEM_SLOW_CLOCK_SYNC,
- SMEM_SMEM_SLOW_CLOCK_VALUE,
- SMEM_BIO_LED_BUF,
- SMEM_SMSM_SHARED_STATE,
- SMEM_SMSM_INT_INFO,
- SMEM_SMSM_SLEEP_DELAY,
- SMEM_SMSM_LIMIT_SLEEP,
- SMEM_SLEEP_POWER_COLLAPSE_DISABLED,
- SMEM_KEYPAD_KEYS_PRESSED,
- SMEM_KEYPAD_STATE_UPDATED,
- SMEM_KEYPAD_STATE_IDX,
- SMEM_GPIO_INT,
- SMEM_MDDI_LCD_IDX,
- SMEM_MDDI_HOST_DRIVER_STATE,
- SMEM_MDDI_LCD_DISP_STATE,
- SMEM_LCD_CUR_PANEL,
- SMEM_MARM_BOOT_SEGMENT_INFO,
- SMEM_AARM_BOOT_SEGMENT_INFO,
- SMEM_SLEEP_STATIC,
- SMEM_SCORPION_FREQUENCY,
- SMEM_SMD_PROFILES,
- SMEM_TSSC_BUSY,
- SMEM_HS_SUSPEND_FILTER_INFO,
- SMEM_BATT_INFO,
- SMEM_APPS_BOOT_MODE,
- SMEM_VERSION_FIRST,
- SMEM_VERSION_SMD = SMEM_VERSION_FIRST,
- SMEM_VERSION_LAST = SMEM_VERSION_FIRST + 24,
- SMEM_OSS_RRCASN1_BUF1,
- SMEM_OSS_RRCASN1_BUF2,
- SMEM_ID_VENDOR0,
- SMEM_ID_VENDOR1,
- SMEM_ID_VENDOR2,
- SMEM_HW_SW_BUILD_ID,
- SMEM_SMD_BLOCK_PORT_BASE_ID,
- SMEM_SMD_BLOCK_PORT_PROC0_HEAP = SMEM_SMD_BLOCK_PORT_BASE_ID +
- SMEM_NUM_SMD_BLOCK_CHANNELS,
- SMEM_SMD_BLOCK_PORT_PROC1_HEAP = SMEM_SMD_BLOCK_PORT_PROC0_HEAP +
- SMEM_NUM_SMD_BLOCK_CHANNELS,
- SMEM_I2C_MUTEX = SMEM_SMD_BLOCK_PORT_PROC1_HEAP +
- SMEM_NUM_SMD_BLOCK_CHANNELS,
- SMEM_SCLK_CONVERSION,
- SMEM_SMD_SMSM_INTR_MUX,
- SMEM_SMSM_CPU_INTR_MASK,
- SMEM_APPS_DEM_SLAVE_DATA,
- SMEM_QDSP6_DEM_SLAVE_DATA,
- SMEM_CLKREGIM_BSP,
- SMEM_CLKREGIM_SOURCES,
- SMEM_SMD_FIFO_BASE_ID,
- SMEM_USABLE_RAM_PARTITION_TABLE = SMEM_SMD_FIFO_BASE_ID +
- SMEM_NUM_SMD_STREAM_CHANNELS,
- SMEM_POWER_ON_STATUS_INFO,
- SMEM_DAL_AREA,
- SMEM_SMEM_LOG_POWER_IDX,
- SMEM_SMEM_LOG_POWER_WRAP,
- SMEM_SMEM_LOG_POWER_EVENTS,
- SMEM_ERR_CRASH_LOG,
- SMEM_ERR_F3_TRACE_LOG,
- SMEM_SMD_BRIDGE_ALLOC_TABLE,
- SMEM_SMDLITE_TABLE,
- SMEM_SD_IMG_UPGRADE_STATUS,
- SMEM_SEFS_INFO,
- SMEM_RESET_LOG,
- SMEM_RESET_LOG_SYMBOLS,
- SMEM_MODEM_SW_BUILD_ID,
- SMEM_SMEM_LOG_MPROC_WRAP,
- SMEM_BOOT_INFO_FOR_APPS,
- SMEM_SMSM_SIZE_INFO,
- SMEM_SMD_LOOPBACK_REGISTER,
- SMEM_SSR_REASON_MSS0,
- SMEM_SSR_REASON_WCNSS0,
- SMEM_SSR_REASON_LPASS0,
- SMEM_SSR_REASON_DSPS0,
- SMEM_SSR_REASON_VCODEC0,
- SMEM_SMP2P_APPS_BASE = 427,
- SMEM_SMP2P_MODEM_BASE = SMEM_SMP2P_APPS_BASE + 8, /* 435 */
- SMEM_SMP2P_AUDIO_BASE = SMEM_SMP2P_MODEM_BASE + 8, /* 443 */
- SMEM_SMP2P_WIRLESS_BASE = SMEM_SMP2P_AUDIO_BASE + 8, /* 451 */
- SMEM_SMP2P_POWER_BASE = SMEM_SMP2P_WIRLESS_BASE + 8, /* 459 */
- SMEM_FLASH_DEVICE_INFO = SMEM_SMP2P_POWER_BASE + 8, /* 467 */
- SMEM_BAM_PIPE_MEMORY, /* 468 */
- SMEM_IMAGE_VERSION_TABLE, /* 469 */
- SMEM_LC_DEBUGGER, /* 470 */
- SMEM_NUM_ITEMS,
-};
-
enum {
SMEM_APPS_Q6_SMSM = 3,
SMEM_Q6_APPS_SMSM = 5,
@@ -217,9 +107,6 @@
};
#ifdef CONFIG_MSM_SMD
-void *smem_alloc(unsigned id, unsigned size);
-void *smem_alloc2(unsigned id, unsigned size_in);
-void *smem_get_entry(unsigned id, unsigned *size);
int smsm_change_state(uint32_t smsm_entry,
uint32_t clear_mask, uint32_t set_mask);
@@ -254,36 +141,8 @@
int smsm_check_for_modem_crash(void);
-void *smem_find(unsigned id, unsigned size);
-void *smem_get_entry(unsigned id, unsigned *size);
-
-/**
- * smem_virt_to_phys() - Convert SMEM address to physical address.
- *
- * @smem_address: Virtual address returned by smem_alloc()/smem_alloc2()
- * @returns: Physical address (or NULL if there is a failure)
- *
- * This function should only be used if an SMEM item needs to be handed
- * off to a DMA engine.
- */
-phys_addr_t smem_virt_to_phys(void *smem_address);
#else
-static inline void *smem_alloc(unsigned id, unsigned size)
-{
- return NULL;
-}
-
-static inline void *smem_alloc2(unsigned id, unsigned size_in)
-{
- return NULL;
-}
-
-static inline void *smem_get_entry(unsigned id, unsigned *size)
-{
- return NULL;
-}
-
static inline int smsm_change_state(uint32_t smsm_entry,
uint32_t clear_mask, uint32_t set_mask)
{
@@ -347,13 +206,5 @@
{
return -ENODEV;
}
-static inline void *smem_find(unsigned id, unsigned size)
-{
- return NULL;
-}
-static inline phys_addr_t smem_virt_to_phys(void *smem_address)
-{
- return (phys_addr_t) NULL;
-}
#endif
#endif
diff --git a/arch/arm/mach-msm/memory_topology.c b/arch/arm/mach-msm/memory_topology.c
index 781cd69..97195e3 100644
--- a/arch/arm/mach-msm/memory_topology.c
+++ b/arch/arm/mach-msm/memory_topology.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2010-2012, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2010-2013, The Linux Foundation. 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 version 2 and
@@ -19,6 +19,7 @@
#include <linux/memory.h>
#include <mach/msm_memtypes.h>
#include <mach/socinfo.h>
+#include <mach/msm_smem.h>
#include "smd_private.h"
#if defined(CONFIG_ARCH_MSM8960)
diff --git a/arch/arm/mach-msm/msm_smem_iface.h b/arch/arm/mach-msm/msm_smem_iface.h
index bc3e73b..c9c56d9 100644
--- a/arch/arm/mach-msm/msm_smem_iface.h
+++ b/arch/arm/mach-msm/msm_smem_iface.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2012, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2013, The Linux Foundation. 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 version 2 and
@@ -16,6 +16,7 @@
#define __ARCH_ARM_MACH_MSM_SMEM_IFACE_H
#include <mach/msm_smsm.h>
+#include <mach/msm_smem.h>
#define MAX_KEY_EVENTS 10
#define MAX_SEC_KEY_PAYLOAD 32
diff --git a/arch/arm/mach-msm/nand_partitions.c b/arch/arm/mach-msm/nand_partitions.c
index ea5fb9c..ad2a10e 100644
--- a/arch/arm/mach-msm/nand_partitions.c
+++ b/arch/arm/mach-msm/nand_partitions.c
@@ -4,7 +4,7 @@
* bootloader.
*
* Copyright (C) 2007 Google, Inc.
- * Copyright (c) 2008-2009,2011 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2008-2009,2011,2013 The Linux Foundation. All rights reserved.
* Author: Brian Swetland <swetland@google.com>
*
* This software is licensed under the terms of the GNU General Public
@@ -34,7 +34,7 @@
#include <mach/board.h>
#ifdef CONFIG_MSM_SMD
-#include "smd_private.h"
+#include <mach/msm_smem.h>
#endif
/* configuration tags specific to msm */
diff --git a/arch/arm/mach-msm/pil-dsps.c b/arch/arm/mach-msm/pil-dsps.c
index df5ea35..73b58ab 100644
--- a/arch/arm/mach-msm/pil-dsps.c
+++ b/arch/arm/mach-msm/pil-dsps.c
@@ -22,6 +22,7 @@
#include <mach/subsystem_restart.h>
#include <mach/msm_smsm.h>
#include <mach/ramdump.h>
+#include <mach/msm_smem.h>
#include "peripheral-loader.h"
#include "scm-pas.h"
diff --git a/arch/arm/mach-msm/pil-gss.c b/arch/arm/mach-msm/pil-gss.c
index 65f86bc..840c90f 100644
--- a/arch/arm/mach-msm/pil-gss.c
+++ b/arch/arm/mach-msm/pil-gss.c
@@ -30,6 +30,7 @@
#include <mach/msm_bus.h>
#include <mach/subsystem_restart.h>
#include <mach/ramdump.h>
+#include <mach/msm_smem.h>
#include "peripheral-loader.h"
#include "scm-pas.h"
diff --git a/arch/arm/mach-msm/pil-pronto.c b/arch/arm/mach-msm/pil-pronto.c
index b186a4d..30168b8 100644
--- a/arch/arm/mach-msm/pil-pronto.c
+++ b/arch/arm/mach-msm/pil-pronto.c
@@ -30,6 +30,7 @@
#include <mach/subsystem_restart.h>
#include <mach/msm_smsm.h>
#include <mach/ramdump.h>
+#include <mach/msm_smem.h>
#include "peripheral-loader.h"
#include "scm-pas.h"
diff --git a/arch/arm/mach-msm/pil-q6v4-lpass.c b/arch/arm/mach-msm/pil-q6v4-lpass.c
index f05bcdb..7acb599 100644
--- a/arch/arm/mach-msm/pil-q6v4-lpass.c
+++ b/arch/arm/mach-msm/pil-q6v4-lpass.c
@@ -25,6 +25,7 @@
#include <mach/subsystem_restart.h>
#include <mach/subsystem_notif.h>
#include <mach/ramdump.h>
+#include <mach/msm_smem.h>
#include "smd_private.h"
#include "sysmon.h"
diff --git a/arch/arm/mach-msm/pil-q6v4-mss.c b/arch/arm/mach-msm/pil-q6v4-mss.c
index 1821ab1..c4b6038 100644
--- a/arch/arm/mach-msm/pil-q6v4-mss.c
+++ b/arch/arm/mach-msm/pil-q6v4-mss.c
@@ -23,6 +23,7 @@
#include <mach/subsystem_restart.h>
#include <mach/msm_smsm.h>
#include <mach/ramdump.h>
+#include <mach/msm_smem.h>
#include "smd_private.h"
#include "peripheral-loader.h"
diff --git a/arch/arm/mach-msm/pil-q6v5-lpass.c b/arch/arm/mach-msm/pil-q6v5-lpass.c
index 6e8e79e..9a5883f 100644
--- a/arch/arm/mach-msm/pil-q6v5-lpass.c
+++ b/arch/arm/mach-msm/pil-q6v5-lpass.c
@@ -29,6 +29,7 @@
#include <mach/subsystem_notif.h>
#include <mach/scm.h>
#include <mach/ramdump.h>
+#include <mach/msm_smem.h>
#include "peripheral-loader.h"
#include "pil-q6v5.h"
diff --git a/arch/arm/mach-msm/pil-q6v5-mss.c b/arch/arm/mach-msm/pil-q6v5-mss.c
index 979458e..5ef6638 100644
--- a/arch/arm/mach-msm/pil-q6v5-mss.c
+++ b/arch/arm/mach-msm/pil-q6v5-mss.c
@@ -31,6 +31,7 @@
#include <mach/clk.h>
#include <mach/msm_smsm.h>
#include <mach/ramdump.h>
+#include <mach/msm_smem.h>
#include "peripheral-loader.h"
#include "pil-q6v5.h"
diff --git a/arch/arm/mach-msm/pil-riva.c b/arch/arm/mach-msm/pil-riva.c
index d72b848..5419bf0 100644
--- a/arch/arm/mach-msm/pil-riva.c
+++ b/arch/arm/mach-msm/pil-riva.c
@@ -24,6 +24,7 @@
#include <mach/subsystem_restart.h>
#include <mach/ramdump.h>
+#include <mach/msm_smem.h>
#include "peripheral-loader.h"
#include "scm-pas.h"
diff --git a/arch/arm/mach-msm/pm2.c b/arch/arm/mach-msm/pm2.c
index a2da8b0..9f97a59 100644
--- a/arch/arm/mach-msm/pm2.c
+++ b/arch/arm/mach-msm/pm2.c
@@ -3,7 +3,7 @@
* MSM Power Management Routines
*
* Copyright (C) 2007 Google, Inc.
- * Copyright (c) 2008-2012 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2008-2013 The Linux Foundation. All rights reserved.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
@@ -44,9 +44,10 @@
#endif
#include <mach/socinfo.h>
#include <mach/proc_comm.h>
+#include <mach/msm_smem.h>
+#include <mach/msm_smsm.h>
#include <asm/smp_scu.h>
-#include "smd_private.h"
#include "smd_rpcrouter.h"
#include "acpuclock.h"
#include "clock.h"
diff --git a/arch/arm/mach-msm/remote_spinlock.c b/arch/arm/mach-msm/remote_spinlock.c
index 62e3e05..a9ebd7c 100644
--- a/arch/arm/mach-msm/remote_spinlock.c
+++ b/arch/arm/mach-msm/remote_spinlock.c
@@ -25,6 +25,7 @@
#include <mach/msm_iomap.h>
#include <mach/remote_spinlock.h>
#include <mach/dal.h>
+#include <mach/msm_smem.h>
#include "smd_private.h"
diff --git a/arch/arm/mach-msm/rmt_storage_client.c b/arch/arm/mach-msm/rmt_storage_client.c
index a4562e9..550624c 100644
--- a/arch/arm/mach-msm/rmt_storage_client.c
+++ b/arch/arm/mach-msm/rmt_storage_client.c
@@ -35,7 +35,7 @@
#ifdef CONFIG_MSM_SDIO_SMEM
#include <mach/sdio_smem.h>
#endif
-#include "smd_private.h"
+#include <mach/msm_smem.h>
enum {
RMT_STORAGE_EVNT_OPEN = 0,
diff --git a/arch/arm/mach-msm/smd.c b/arch/arm/mach-msm/smd.c
index 3590e6b..1945651 100644
--- a/arch/arm/mach-msm/smd.c
+++ b/arch/arm/mach-msm/smd.c
@@ -47,11 +47,13 @@
#include <mach/msm_ipc_logging.h>
#include <mach/ramdump.h>
#include <mach/board.h>
+#include <mach/msm_smem.h>
#include <asm/cacheflush.h>
#include "smd_private.h"
#include "modem_notifier.h"
+#include "smem_private.h"
#if defined(CONFIG_ARCH_QSD8X50) || defined(CONFIG_ARCH_MSM8X60) \
|| defined(CONFIG_ARCH_MSM8960) || defined(CONFIG_ARCH_FSM9XXX) \
@@ -175,16 +177,6 @@
},
};
-struct smem_area {
- phys_addr_t phys_addr;
- resource_size_t size;
- void __iomem *virt_addr;
-};
-static uint32_t num_smem_areas;
-static struct smem_area *smem_areas;
-static struct ramdump_segment *smem_ramdump_segments;
-static void *smem_ramdump_dev;
-static void *smem_phys_to_virt(phys_addr_t base, unsigned offset);
static void *smd_dev;
struct interrupt_stat interrupt_stats[NUM_SMD_SUBSYSTEMS];
@@ -380,9 +372,6 @@
#define SMD_LOOPBACK_CID 100
-#define SMEM_SPINLOCK_SMEM_ALLOC "S:3"
-static remote_spinlock_t remote_spinlock;
-
static LIST_HEAD(smd_ch_list_loopback);
static void smd_fake_irq_handler(unsigned long arg);
static void smsm_cb_snapshot(uint32_t use_wakelock);
@@ -392,7 +381,6 @@
static DECLARE_WORK(smsm_cb_work, notify_smsm_cb_clients_worker);
static DEFINE_MUTEX(smsm_lock);
static struct smsm_state_info *smsm_states;
-static int spinlocks_initialized;
/**
* Variables to indicate smd module initialization.
@@ -2408,222 +2396,6 @@
}
EXPORT_SYMBOL(smd_is_pkt_avail);
-
-/* -------------------------------------------------------------------------- */
-
-/**
- * smem_phys_to_virt() - Convert a physical base and offset to virtual address
- *
- * @base: physical base address to check
- * @offset: offset from the base to get the final address
- * @returns: virtual SMEM address; NULL for failure
- *
- * Takes a physical address and an offset and checks if the resulting physical
- * address would fit into one of the smem regions. If so, returns the
- * corresponding virtual address. Otherwise returns NULL.
- */
-static void *smem_phys_to_virt(phys_addr_t base, unsigned offset)
-{
- int i;
- phys_addr_t phys_addr;
- resource_size_t size;
-
- if (OVERFLOW_ADD_UNSIGNED(phys_addr_t, base, offset))
- return NULL;
-
- if (!smem_areas) {
- /*
- * Early boot - no area configuration yet, so default
- * to using the main memory region.
- *
- * To remove the MSM_SHARED_RAM_BASE and the static
- * mapping of SMEM in the future, add dump_stack()
- * to identify the early callers of smem_get_entry()
- * (which calls this function) and replace those calls
- * with a new function that knows how to lookup the
- * SMEM base address before SMEM has been probed.
- */
- phys_addr = msm_shared_ram_phys;
- size = MSM_SHARED_RAM_SIZE;
-
- if (base >= phys_addr && base + offset < phys_addr + size) {
- if (OVERFLOW_ADD_UNSIGNED(uintptr_t,
- (uintptr_t)MSM_SHARED_RAM_BASE, offset)) {
- pr_err("%s: overflow %p %x\n", __func__,
- MSM_SHARED_RAM_BASE, offset);
- return NULL;
- }
-
- return MSM_SHARED_RAM_BASE + offset;
- } else {
- return NULL;
- }
- }
- for (i = 0; i < num_smem_areas; ++i) {
- phys_addr = smem_areas[i].phys_addr;
- size = smem_areas[i].size;
-
- if (base < phys_addr || base + offset >= phys_addr + size)
- continue;
-
- if (OVERFLOW_ADD_UNSIGNED(uintptr_t,
- (uintptr_t)smem_areas[i].virt_addr, offset)) {
- pr_err("%s: overflow %p %x\n", __func__,
- smem_areas[i].virt_addr, offset);
- return NULL;
- }
-
- return smem_areas[i].virt_addr + offset;
- }
-
- return NULL;
-}
-
-/**
- * smem_virt_to_phys() - Convert SMEM address to physical address.
- *
- * @smem_address: Address of SMEM item (returned by smem_alloc(), etc)
- * @returns: Physical address (or NULL if there is a failure)
- *
- * This function should only be used if an SMEM item needs to be handed
- * off to a DMA engine.
- */
-phys_addr_t smem_virt_to_phys(void *smem_address)
-{
- phys_addr_t phys_addr = 0;
- int i;
- void *vend;
-
- if (!smem_areas)
- return phys_addr;
-
- for (i = 0; i < num_smem_areas; ++i) {
- vend = (void *)(smem_areas[i].virt_addr + smem_areas[i].size);
-
- if (smem_address >= smem_areas[i].virt_addr &&
- smem_address < vend) {
- phys_addr = smem_address - smem_areas[i].virt_addr;
- phys_addr += smem_areas[i].phys_addr;
- break;
- }
- }
-
- return phys_addr;
-}
-EXPORT_SYMBOL(smem_virt_to_phys);
-
-/* smem_alloc returns the pointer to smem item if it is already allocated.
- * Otherwise, it returns NULL.
- */
-void *smem_alloc(unsigned id, unsigned size)
-{
- return smem_find(id, size);
-}
-EXPORT_SYMBOL(smem_alloc);
-
-/* smem_alloc2 returns the pointer to smem item. If it is not allocated,
- * it allocates it and then returns the pointer to it.
- */
-void *smem_alloc2(unsigned id, unsigned size_in)
-{
- struct smem_shared *shared = (void *) MSM_SHARED_RAM_BASE;
- struct smem_heap_entry *toc = shared->heap_toc;
- unsigned long flags;
- void *ret = NULL;
-
- if (!shared->heap_info.initialized) {
- pr_err("%s: smem heap info not initialized\n", __func__);
- return NULL;
- }
-
- if (id >= SMEM_NUM_ITEMS)
- return NULL;
-
- size_in = ALIGN(size_in, 8);
- remote_spin_lock_irqsave(&remote_spinlock, flags);
- if (toc[id].allocated) {
- SMD_DBG("%s: %u already allocated\n", __func__, id);
- if (size_in != toc[id].size)
- pr_err("%s: wrong size %u (expected %u)\n",
- __func__, toc[id].size, size_in);
- else
- ret = (void *)(MSM_SHARED_RAM_BASE + toc[id].offset);
- } else if (id > SMEM_FIXED_ITEM_LAST) {
- SMD_DBG("%s: allocating %u\n", __func__, id);
- if (shared->heap_info.heap_remaining >= size_in) {
- toc[id].offset = shared->heap_info.free_offset;
- toc[id].size = size_in;
- wmb();
- toc[id].allocated = 1;
-
- shared->heap_info.free_offset += size_in;
- shared->heap_info.heap_remaining -= size_in;
- ret = (void *)(MSM_SHARED_RAM_BASE + toc[id].offset);
- } else
- pr_err("%s: not enough memory %u (required %u)\n",
- __func__, shared->heap_info.heap_remaining,
- size_in);
- }
- wmb();
- remote_spin_unlock_irqrestore(&remote_spinlock, flags);
- return ret;
-}
-EXPORT_SYMBOL(smem_alloc2);
-
-void *smem_get_entry(unsigned id, unsigned *size)
-{
- struct smem_shared *shared = (void *) MSM_SHARED_RAM_BASE;
- struct smem_heap_entry *toc = shared->heap_toc;
- int use_spinlocks = spinlocks_initialized;
- void *ret = 0;
- unsigned long flags = 0;
-
- if (id >= SMEM_NUM_ITEMS)
- return ret;
-
- if (use_spinlocks)
- remote_spin_lock_irqsave(&remote_spinlock, flags);
- /* toc is in device memory and cannot be speculatively accessed */
- if (toc[id].allocated) {
- phys_addr_t phys_base;
-
- *size = toc[id].size;
- barrier();
-
- phys_base = toc[id].reserved & BASE_ADDR_MASK;
- if (!phys_base)
- phys_base = (phys_addr_t)msm_shared_ram_phys;
- ret = smem_phys_to_virt(phys_base, toc[id].offset);
- } else {
- *size = 0;
- }
- if (use_spinlocks)
- remote_spin_unlock_irqrestore(&remote_spinlock, flags);
-
- return ret;
-}
-EXPORT_SYMBOL(smem_get_entry);
-
-void *smem_find(unsigned id, unsigned size_in)
-{
- unsigned size;
- void *ptr;
-
- ptr = smem_get_entry(id, &size);
- if (!ptr)
- return 0;
-
- size_in = ALIGN(size_in, 8);
- if (size_in != size) {
- pr_err("smem_find(%d, %d): wrong size %d\n",
- id, size_in, size);
- return 0;
- }
-
- return ptr;
-}
-EXPORT_SYMBOL(smem_find);
-
static int smsm_cb_init(void)
{
struct smsm_state_info *state_info;
@@ -3313,17 +3085,6 @@
}
EXPORT_SYMBOL(smsm_state_cb_deregister);
-/**
- * smem_get_remote_spinlock - Remote spinlock pointer for unit testing.
- *
- * @returns: pointer to SMEM remote spinlock
- */
-remote_spinlock_t *smem_get_remote_spinlock(void)
-{
- return &remote_spinlock;
-}
-EXPORT_SYMBOL(smem_get_remote_spinlock);
-
int smd_module_init_notifier_register(struct notifier_block *nb)
{
int ret;
@@ -4126,23 +3887,6 @@
remote_spin_release(&remote_spinlock, notifier->processor);
remote_spin_release_all(notifier->processor);
- if (smem_ramdump_dev) {
- int ret;
-
- SMD_INFO("%s: saving ramdump\n", __func__);
- /*
- * XPU protection does not currently allow the
- * auxiliary memory regions to be dumped. If this
- * changes, then num_smem_areas + 1 should be passed
- * into do_elf_ramdump() to dump all regions.
- */
- ret = do_elf_ramdump(smem_ramdump_dev,
- smem_ramdump_segments, 1);
- if (ret < 0)
- pr_err("%s: unable to dump smem %d\n", __func__,
- ret);
- }
-
smd_channel_reset(notifier->processor);
}
@@ -4155,13 +3899,6 @@
void *handle;
struct restart_notifier_block *nb;
- smem_ramdump_dev = create_ramdump_device("smem-smd", smd_dev);
- if (IS_ERR_OR_NULL(smem_ramdump_dev)) {
- pr_err("%s: Unable to create smem ramdump device.\n",
- __func__);
- smem_ramdump_dev = NULL;
- }
-
for (i = 0; i < ARRAY_SIZE(restart_notifiers); i++) {
nb = &restart_notifiers[i];
handle = subsys_notif_register_notifier(nb->name, &nb->nb);
diff --git a/arch/arm/mach-msm/smd_debug.c b/arch/arm/mach-msm/smd_debug.c
index 4dcf72f..b66e258 100644
--- a/arch/arm/mach-msm/smd_debug.c
+++ b/arch/arm/mach-msm/smd_debug.c
@@ -21,8 +21,10 @@
#include <linux/jiffies.h>
#include <mach/msm_iomap.h>
+#include <mach/msm_smem.h>
#include "smd_private.h"
+#include "smem_private.h"
#if defined(CONFIG_DEBUG_FS)
diff --git a/arch/arm/mach-msm/smd_private.h b/arch/arm/mach-msm/smd_private.h
index 4a6a509..4fe9592 100644
--- a/arch/arm/mach-msm/smd_private.h
+++ b/arch/arm/mach-msm/smd_private.h
@@ -34,37 +34,6 @@
#define VERSION_MODEM 9
#define VERSION_DSPS 10
-#define SMD_HEAP_SIZE 512
-
-struct smem_heap_info {
- unsigned initialized;
- unsigned free_offset;
- unsigned heap_remaining;
- unsigned reserved;
-};
-
-struct smem_heap_entry {
- unsigned allocated;
- unsigned offset;
- unsigned size;
- unsigned reserved; /* bits 1:0 reserved, bits 31:2 aux smem base addr */
-};
-#define BASE_ADDR_MASK 0xfffffffc
-
-struct smem_proc_comm {
- unsigned command;
- unsigned status;
- unsigned data1;
- unsigned data2;
-};
-
-struct smem_shared {
- struct smem_proc_comm proc_comm[4];
- unsigned version[32];
- struct smem_heap_info heap_info;
- struct smem_heap_entry heap_toc[SMD_HEAP_SIZE];
-};
-
#if defined(CONFIG_MSM_SMD_PKG4)
struct smsm_interrupt_info {
uint32_t aArm_en_mask;
@@ -313,7 +282,4 @@
uint32_t smsm_interrupt_id;
};
extern struct interrupt_stat interrupt_stats[NUM_SMD_SUBSYSTEMS];
-
-/* used for unit testing spinlocks */
-remote_spinlock_t *smem_get_remote_spinlock(void);
#endif
diff --git a/arch/arm/mach-msm/smem.c b/arch/arm/mach-msm/smem.c
new file mode 100644
index 0000000..c00f96f
--- /dev/null
+++ b/arch/arm/mach-msm/smem.c
@@ -0,0 +1,363 @@
+/* Copyright (c) 2013, The Linux Foundation. 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 version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+#include <linux/export.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/moduleparam.h>
+#include <linux/printk.h>
+
+#include <mach/board.h>
+#include <mach/msm_iomap.h>
+#include <mach/msm_smem.h>
+#include <mach/ramdump.h>
+#include <mach/subsystem_notif.h>
+
+#include "smem_private.h"
+
+/**
+ * OVERFLOW_ADD_UNSIGNED() - check for unsigned overflow
+ *
+ * @type: type to check for overflow
+ * @a: left value to use
+ * @b: right value to use
+ * @returns: true if a + b will result in overflow; false otherwise
+ */
+#define OVERFLOW_ADD_UNSIGNED(type, a, b) \
+ (((type)~0 - (a)) < (b) ? true : false)
+
+enum {
+ MSM_SMEM_DEBUG = 1U << 0,
+ MSM_SMEM_INFO = 1U << 1,
+};
+
+static int msm_smem_debug_mask;
+module_param_named(debug_mask, msm_smem_debug_mask,
+ int, S_IRUGO | S_IWUSR | S_IWGRP);
+
+#define SMEM_DBG(x...) do { \
+ if (msm_smem_debug_mask & MSM_SMEM_DEBUG) \
+ pr_debug(x); \
+ } while (0)
+
+remote_spinlock_t remote_spinlock;
+int spinlocks_initialized;
+uint32_t num_smem_areas;
+struct smem_area *smem_areas;
+struct ramdump_segment *smem_ramdump_segments;
+
+static void *smem_ramdump_dev;
+
+struct restart_notifier_block {
+ unsigned processor;
+ char *name;
+ struct notifier_block nb;
+};
+
+static int restart_notifier_cb(struct notifier_block *this,
+ unsigned long code,
+ void *data);
+
+static struct restart_notifier_block restart_notifiers[] = {
+ {SMEM_MODEM, "modem", .nb.notifier_call = restart_notifier_cb},
+ {SMEM_Q6, "lpass", .nb.notifier_call = restart_notifier_cb},
+ {SMEM_WCNSS, "wcnss", .nb.notifier_call = restart_notifier_cb},
+ {SMEM_DSPS, "dsps", .nb.notifier_call = restart_notifier_cb},
+ {SMEM_MODEM, "gss", .nb.notifier_call = restart_notifier_cb},
+ {SMEM_Q6, "adsp", .nb.notifier_call = restart_notifier_cb},
+};
+
+/**
+ * smem_phys_to_virt() - Convert a physical base and offset to virtual address
+ *
+ * @base: physical base address to check
+ * @offset: offset from the base to get the final address
+ * @returns: virtual SMEM address; NULL for failure
+ *
+ * Takes a physical address and an offset and checks if the resulting physical
+ * address would fit into one of the smem regions. If so, returns the
+ * corresponding virtual address. Otherwise returns NULL.
+ */
+static void *smem_phys_to_virt(phys_addr_t base, unsigned offset)
+{
+ int i;
+ phys_addr_t phys_addr;
+ resource_size_t size;
+
+ if (OVERFLOW_ADD_UNSIGNED(phys_addr_t, base, offset))
+ return NULL;
+
+ if (!smem_areas) {
+ /*
+ * Early boot - no area configuration yet, so default
+ * to using the main memory region.
+ *
+ * To remove the MSM_SHARED_RAM_BASE and the static
+ * mapping of SMEM in the future, add dump_stack()
+ * to identify the early callers of smem_get_entry()
+ * (which calls this function) and replace those calls
+ * with a new function that knows how to lookup the
+ * SMEM base address before SMEM has been probed.
+ */
+ phys_addr = msm_shared_ram_phys;
+ size = MSM_SHARED_RAM_SIZE;
+
+ if (base >= phys_addr && base + offset < phys_addr + size) {
+ if (OVERFLOW_ADD_UNSIGNED(uintptr_t,
+ (uintptr_t)MSM_SHARED_RAM_BASE, offset)) {
+ pr_err("%s: overflow %p %x\n", __func__,
+ MSM_SHARED_RAM_BASE, offset);
+ return NULL;
+ }
+
+ return MSM_SHARED_RAM_BASE + offset;
+ } else {
+ return NULL;
+ }
+ }
+ for (i = 0; i < num_smem_areas; ++i) {
+ phys_addr = smem_areas[i].phys_addr;
+ size = smem_areas[i].size;
+
+ if (base < phys_addr || base + offset >= phys_addr + size)
+ continue;
+
+ if (OVERFLOW_ADD_UNSIGNED(uintptr_t,
+ (uintptr_t)smem_areas[i].virt_addr, offset)) {
+ pr_err("%s: overflow %p %x\n", __func__,
+ smem_areas[i].virt_addr, offset);
+ return NULL;
+ }
+
+ return smem_areas[i].virt_addr + offset;
+ }
+
+ return NULL;
+}
+
+/**
+ * smem_virt_to_phys() - Convert SMEM address to physical address.
+ *
+ * @smem_address: Address of SMEM item (returned by smem_alloc(), etc)
+ * @returns: Physical address (or NULL if there is a failure)
+ *
+ * This function should only be used if an SMEM item needs to be handed
+ * off to a DMA engine.
+ */
+phys_addr_t smem_virt_to_phys(void *smem_address)
+{
+ phys_addr_t phys_addr = 0;
+ int i;
+ void *vend;
+
+ if (!smem_areas)
+ return phys_addr;
+
+ for (i = 0; i < num_smem_areas; ++i) {
+ vend = (void *)(smem_areas[i].virt_addr + smem_areas[i].size);
+
+ if (smem_address >= smem_areas[i].virt_addr &&
+ smem_address < vend) {
+ phys_addr = smem_address - smem_areas[i].virt_addr;
+ phys_addr += smem_areas[i].phys_addr;
+ break;
+ }
+ }
+
+ return phys_addr;
+}
+EXPORT_SYMBOL(smem_virt_to_phys);
+
+/* smem_alloc returns the pointer to smem item if it is already allocated.
+ * Otherwise, it returns NULL.
+ */
+void *smem_alloc(unsigned id, unsigned size)
+{
+ return smem_find(id, size);
+}
+EXPORT_SYMBOL(smem_alloc);
+
+void *smem_find(unsigned id, unsigned size_in)
+{
+ unsigned size;
+ void *ptr;
+
+ ptr = smem_get_entry(id, &size);
+ if (!ptr)
+ return 0;
+
+ size_in = ALIGN(size_in, 8);
+ if (size_in != size) {
+ pr_err("smem_find(%d, %d): wrong size %d\n",
+ id, size_in, size);
+ return 0;
+ }
+
+ return ptr;
+}
+EXPORT_SYMBOL(smem_find);
+
+/* smem_alloc2 returns the pointer to smem item. If it is not allocated,
+ * it allocates it and then returns the pointer to it.
+ */
+void *smem_alloc2(unsigned id, unsigned size_in)
+{
+ struct smem_shared *shared = (void *) MSM_SHARED_RAM_BASE;
+ struct smem_heap_entry *toc = shared->heap_toc;
+ unsigned long flags;
+ void *ret = NULL;
+
+ if (!shared->heap_info.initialized) {
+ pr_err("%s: smem heap info not initialized\n", __func__);
+ return NULL;
+ }
+
+ if (id >= SMEM_NUM_ITEMS)
+ return NULL;
+
+ size_in = ALIGN(size_in, 8);
+ remote_spin_lock_irqsave(&remote_spinlock, flags);
+ if (toc[id].allocated) {
+ SMEM_DBG("%s: %u already allocated\n", __func__, id);
+ if (size_in != toc[id].size)
+ pr_err("%s: wrong size %u (expected %u)\n",
+ __func__, toc[id].size, size_in);
+ else
+ ret = (void *)(MSM_SHARED_RAM_BASE + toc[id].offset);
+ } else if (id > SMEM_FIXED_ITEM_LAST) {
+ SMEM_DBG("%s: allocating %u\n", __func__, id);
+ if (shared->heap_info.heap_remaining >= size_in) {
+ toc[id].offset = shared->heap_info.free_offset;
+ toc[id].size = size_in;
+ wmb();
+ toc[id].allocated = 1;
+
+ shared->heap_info.free_offset += size_in;
+ shared->heap_info.heap_remaining -= size_in;
+ ret = (void *)(MSM_SHARED_RAM_BASE + toc[id].offset);
+ } else
+ pr_err("%s: not enough memory %u (required %u)\n",
+ __func__, shared->heap_info.heap_remaining,
+ size_in);
+ }
+ wmb();
+ remote_spin_unlock_irqrestore(&remote_spinlock, flags);
+ return ret;
+}
+EXPORT_SYMBOL(smem_alloc2);
+
+void *smem_get_entry(unsigned id, unsigned *size)
+{
+ struct smem_shared *shared = (void *) MSM_SHARED_RAM_BASE;
+ struct smem_heap_entry *toc = shared->heap_toc;
+ int use_spinlocks = spinlocks_initialized;
+ void *ret = 0;
+ unsigned long flags = 0;
+
+ if (id >= SMEM_NUM_ITEMS)
+ return ret;
+
+ if (use_spinlocks)
+ remote_spin_lock_irqsave(&remote_spinlock, flags);
+ /* toc is in device memory and cannot be speculatively accessed */
+ if (toc[id].allocated) {
+ phys_addr_t phys_base;
+
+ *size = toc[id].size;
+ barrier();
+
+ phys_base = toc[id].reserved & BASE_ADDR_MASK;
+ if (!phys_base)
+ phys_base = (phys_addr_t)msm_shared_ram_phys;
+ ret = smem_phys_to_virt(phys_base, toc[id].offset);
+ } else {
+ *size = 0;
+ }
+ if (use_spinlocks)
+ remote_spin_unlock_irqrestore(&remote_spinlock, flags);
+
+ return ret;
+}
+EXPORT_SYMBOL(smem_get_entry);
+
+
+/**
+ * smem_get_remote_spinlock - Remote spinlock pointer for unit testing.
+ *
+ * @returns: pointer to SMEM remote spinlock
+ */
+remote_spinlock_t *smem_get_remote_spinlock(void)
+{
+ return &remote_spinlock;
+}
+EXPORT_SYMBOL(smem_get_remote_spinlock);
+
+static int restart_notifier_cb(struct notifier_block *this,
+ unsigned long code,
+ void *data)
+{
+ if (code == SUBSYS_AFTER_SHUTDOWN) {
+ struct restart_notifier_block *notifier;
+
+ notifier = container_of(this,
+ struct restart_notifier_block, nb);
+ SMEM_DBG("%s: ssrestart for processor %d ('%s')\n",
+ __func__, notifier->processor,
+ notifier->name);
+
+ remote_spin_release(&remote_spinlock, notifier->processor);
+ remote_spin_release_all(notifier->processor);
+
+ if (smem_ramdump_dev) {
+ int ret;
+
+ SMEM_DBG("%s: saving ramdump\n", __func__);
+ /*
+ * XPU protection does not currently allow the
+ * auxiliary memory regions to be dumped. If this
+ * changes, then num_smem_areas + 1 should be passed
+ * into do_elf_ramdump() to dump all regions.
+ */
+ ret = do_elf_ramdump(smem_ramdump_dev,
+ smem_ramdump_segments, 1);
+ if (ret < 0)
+ pr_err("%s: unable to dump smem %d\n", __func__,
+ ret);
+ }
+ }
+
+ return NOTIFY_DONE;
+}
+
+static __init int modem_restart_late_init(void)
+{
+ int i;
+ void *handle;
+ struct restart_notifier_block *nb;
+
+ smem_ramdump_dev = create_ramdump_device("smem", NULL);
+ if (IS_ERR_OR_NULL(smem_ramdump_dev)) {
+ pr_err("%s: Unable to create smem ramdump device.\n",
+ __func__);
+ smem_ramdump_dev = NULL;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(restart_notifiers); i++) {
+ nb = &restart_notifiers[i];
+ handle = subsys_notif_register_notifier(nb->name, &nb->nb);
+ SMEM_DBG("%s: registering notif for '%s', handle=%p\n",
+ __func__, nb->name, handle);
+ }
+
+ return 0;
+}
+late_initcall(modem_restart_late_init);
diff --git a/arch/arm/mach-msm/smem_log.c b/arch/arm/mach-msm/smem_log.c
index 361df33..87f141d2 100644
--- a/arch/arm/mach-msm/smem_log.c
+++ b/arch/arm/mach-msm/smem_log.c
@@ -32,6 +32,7 @@
#include <mach/msm_iomap.h>
#include <mach/smem_log.h>
+#include <mach/msm_smem.h>
#include <asm/arch_timer.h>
diff --git a/arch/arm/mach-msm/smem_private.h b/arch/arm/mach-msm/smem_private.h
new file mode 100644
index 0000000..89b2b7b
--- /dev/null
+++ b/arch/arm/mach-msm/smem_private.h
@@ -0,0 +1,68 @@
+/* Copyright (c) 2013, The Linux Foundation. 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 version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+#ifndef _ARCH_ARM_MACH_MSM_SMEM_PRIVATE_H_
+#define _ARCH_ARM_MACH_MSM_SMEM_PRIVATE_H_
+
+#include <linux/remote_spinlock.h>
+
+#include <mach/ramdump.h>
+
+#define SMEM_SPINLOCK_SMEM_ALLOC "S:3"
+extern remote_spinlock_t remote_spinlock;
+extern int spinlocks_initialized;
+
+#define SMD_HEAP_SIZE 512
+
+struct smem_heap_info {
+ unsigned initialized;
+ unsigned free_offset;
+ unsigned heap_remaining;
+ unsigned reserved;
+};
+
+struct smem_heap_entry {
+ unsigned allocated;
+ unsigned offset;
+ unsigned size;
+ unsigned reserved; /* bits 1:0 reserved, bits 31:2 aux smem base addr */
+};
+#define BASE_ADDR_MASK 0xfffffffc
+
+struct smem_proc_comm {
+ unsigned command;
+ unsigned status;
+ unsigned data1;
+ unsigned data2;
+};
+
+struct smem_shared {
+ struct smem_proc_comm proc_comm[4];
+ unsigned version[32];
+ struct smem_heap_info heap_info;
+ struct smem_heap_entry heap_toc[SMD_HEAP_SIZE];
+};
+
+struct smem_area {
+ phys_addr_t phys_addr;
+ resource_size_t size;
+ void __iomem *virt_addr;
+};
+
+extern uint32_t num_smem_areas;
+extern struct smem_area *smem_areas;
+
+extern struct ramdump_segment *smem_ramdump_segments;
+
+/* used for unit testing spinlocks */
+remote_spinlock_t *smem_get_remote_spinlock(void);
+#endif /* _ARCH_ARM_MACH_MSM_SMEM_PRIVATE_H_ */
diff --git a/arch/arm/mach-msm/smp2p.c b/arch/arm/mach-msm/smp2p.c
index 7bdcce9..ee262b0 100644
--- a/arch/arm/mach-msm/smp2p.c
+++ b/arch/arm/mach-msm/smp2p.c
@@ -19,7 +19,7 @@
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
-#include <mach/msm_smsm.h>
+#include <mach/msm_smem.h>
#include <mach/msm_ipc_logging.h>
#include "smp2p_private_api.h"
#include "smp2p_private.h"
diff --git a/arch/arm/mach-msm/smp2p_loopback.c b/arch/arm/mach-msm/smp2p_loopback.c
index d95c93f..5df3d70 100644
--- a/arch/arm/mach-msm/smp2p_loopback.c
+++ b/arch/arm/mach-msm/smp2p_loopback.c
@@ -21,7 +21,7 @@
#include <linux/termios.h>
#include <linux/module.h>
#include <linux/remote_spinlock.h>
-#include "smd_private.h"
+#include "smem_private.h"
#include "smp2p_private.h"
/**
diff --git a/arch/arm/mach-msm/smp2p_spinlock_test.c b/arch/arm/mach-msm/smp2p_spinlock_test.c
index 09d7c0d..c14bac0 100644
--- a/arch/arm/mach-msm/smp2p_spinlock_test.c
+++ b/arch/arm/mach-msm/smp2p_spinlock_test.c
@@ -17,8 +17,8 @@
#include <linux/delay.h>
#include <linux/completion.h>
#include <linux/remote_spinlock.h>
-#include <mach/msm_smsm.h>
-#include "smd_private.h"
+#include <mach/msm_smem.h>
+#include "smem_private.h"
#include "smp2p_private.h"
#include "smp2p_test_common.h"
diff --git a/arch/arm/mach-msm/socinfo.c b/arch/arm/mach-msm/socinfo.c
index abc63ef..0c02b51 100644
--- a/arch/arm/mach-msm/socinfo.c
+++ b/arch/arm/mach-msm/socinfo.c
@@ -27,8 +27,8 @@
#include <asm/mach-types.h>
#include <mach/socinfo.h>
+#include <mach/msm_smem.h>
-#include "smd_private.h"
#include "boot_stats.h"
#define BUILD_ID_LENGTH 32
diff --git a/arch/arm/mach-msm/timer.c b/arch/arm/mach-msm/timer.c
index 06a4c29..1ea0f2d 100644
--- a/arch/arm/mach-msm/timer.c
+++ b/arch/arm/mach-msm/timer.c
@@ -36,7 +36,8 @@
#include <mach/socinfo.h>
#if defined(CONFIG_MSM_SMD)
-#include "smd_private.h"
+#include <mach/msm_smem.h>
+#include <mach/msm_smsm.h>
#endif
#include "timer.h"