[PATCH 02/15] smem: drop drivers/smem
Caleb Connolly
caleb.connolly at linaro.org
Sun Nov 24 20:17:44 CET 2024
Remove the old qcom SMEM driver port and the sandbox stub
implementation.
Signed-off-by: Caleb Connolly <caleb.connolly at linaro.org>
---
arch/arm/Kconfig | 1 -
drivers/smem/msm_smem.c | 937 --------------------------------------------
drivers/smem/sandbox_smem.c | 44 ---
3 files changed, 982 deletions(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index dc44ea1e6c9f..66b773b0b7f4 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1088,9 +1088,8 @@ config ARCH_SNAPDRAGON
select DM_SERIAL
select DM_RESET
select POWER_DOMAIN
select GPIO_EXTRA_HEADER
- select MSM_SMEM
select OF_CONTROL
select OF_SEPARATE
select SPMI
select BOARD_LATE_INIT
diff --git a/drivers/smem/msm_smem.c b/drivers/smem/msm_smem.c
deleted file mode 100644
index ccd145f9afbb..000000000000
--- a/drivers/smem/msm_smem.c
+++ /dev/null
@@ -1,937 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (c) 2015, Sony Mobile Communications AB.
- * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
- * Copyright (c) 2018, Ramon Fried <ramon.fried at gmail.com>
- */
-
-#include <errno.h>
-#include <dm.h>
-#include <asm/global_data.h>
-#include <dm/device_compat.h>
-#include <dm/devres.h>
-#include <dm/of_access.h>
-#include <dm/of_addr.h>
-#include <asm/io.h>
-#include <linux/bug.h>
-#include <linux/err.h>
-#include <linux/ioport.h>
-#include <linux/io.h>
-#include <linux/sizes.h>
-#include <smem.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-/*
- * The Qualcomm shared memory system is an allocate-only heap structure that
- * consists of one of more memory areas that can be accessed by the processors
- * in the SoC.
- *
- * All systems contains a global heap, accessible by all processors in the SoC,
- * with a table of contents data structure (@smem_header) at the beginning of
- * the main shared memory block.
- *
- * The global header contains meta data for allocations as well as a fixed list
- * of 512 entries (@smem_global_entry) that can be initialized to reference
- * parts of the shared memory space.
- *
- *
- * In addition to this global heap, a set of "private" heaps can be set up at
- * boot time with access restrictions so that only certain processor pairs can
- * access the data.
- *
- * These partitions are referenced from an optional partition table
- * (@smem_ptable), that is found 4kB from the end of the main smem region. The
- * partition table entries (@smem_ptable_entry) lists the involved processors
- * (or hosts) and their location in the main shared memory region.
- *
- * Each partition starts with a header (@smem_partition_header) that identifies
- * the partition and holds properties for the two internal memory regions. The
- * two regions are cached and non-cached memory respectively. Each region
- * contain a link list of allocation headers (@smem_private_entry) followed by
- * their data.
- *
- * Items in the non-cached region are allocated from the start of the partition
- * while items in the cached region are allocated from the end. The free area
- * is hence the region between the cached and non-cached offsets. The header of
- * cached items comes after the data.
- *
- * Version 12 (SMEM_GLOBAL_PART_VERSION) changes the item alloc/get procedure
- * for the global heap. A new global partition is created from the global heap
- * region with partition type (SMEM_GLOBAL_HOST) and the max smem item count is
- * set by the bootloader.
- *
- */
-
-/*
- * The version member of the smem header contains an array of versions for the
- * various software components in the SoC. We verify that the boot loader
- * version is a valid version as a sanity check.
- */
-#define SMEM_MASTER_SBL_VERSION_INDEX 7
-#define SMEM_GLOBAL_HEAP_VERSION 11
-#define SMEM_GLOBAL_PART_VERSION 12
-
-/*
- * The first 8 items are only to be allocated by the boot loader while
- * initializing the heap.
- */
-#define SMEM_ITEM_LAST_FIXED 8
-
-/* Highest accepted item number, for both global and private heaps */
-#define SMEM_ITEM_COUNT 512
-
-/* Processor/host identifier for the application processor */
-#define SMEM_HOST_APPS 0
-
-/* Processor/host identifier for the global partition */
-#define SMEM_GLOBAL_HOST 0xfffe
-
-/* Max number of processors/hosts in a system */
-#define SMEM_HOST_COUNT 10
-
-/**
- * struct smem_proc_comm - proc_comm communication struct (legacy)
- * @command: current command to be executed
- * @status: status of the currently requested command
- * @params: parameters to the command
- */
-struct smem_proc_comm {
- __le32 command;
- __le32 status;
- __le32 params[2];
-};
-
-/**
- * struct smem_global_entry - entry to reference smem items on the heap
- * @allocated: boolean to indicate if this entry is used
- * @offset: offset to the allocated space
- * @size: size of the allocated space, 8 byte aligned
- * @aux_base: base address for the memory region used by this unit, or 0 for
- * the default region. bits 0,1 are reserved
- */
-struct smem_global_entry {
- __le32 allocated;
- __le32 offset;
- __le32 size;
- __le32 aux_base; /* bits 1:0 reserved */
-};
-#define AUX_BASE_MASK 0xfffffffc
-
-/**
- * struct smem_header - header found in beginning of primary smem region
- * @proc_comm: proc_comm communication interface (legacy)
- * @version: array of versions for the various subsystems
- * @initialized: boolean to indicate that smem is initialized
- * @free_offset: index of the first unallocated byte in smem
- * @available: number of bytes available for allocation
- * @reserved: reserved field, must be 0
- * toc: array of references to items
- */
-struct smem_header {
- struct smem_proc_comm proc_comm[4];
- __le32 version[32];
- __le32 initialized;
- __le32 free_offset;
- __le32 available;
- __le32 reserved;
- struct smem_global_entry toc[SMEM_ITEM_COUNT];
-};
-
-/**
- * struct smem_ptable_entry - one entry in the @smem_ptable list
- * @offset: offset, within the main shared memory region, of the partition
- * @size: size of the partition
- * @flags: flags for the partition (currently unused)
- * @host0: first processor/host with access to this partition
- * @host1: second processor/host with access to this partition
- * @cacheline: alignment for "cached" entries
- * @reserved: reserved entries for later use
- */
-struct smem_ptable_entry {
- __le32 offset;
- __le32 size;
- __le32 flags;
- __le16 host0;
- __le16 host1;
- __le32 cacheline;
- __le32 reserved[7];
-};
-
-/**
- * struct smem_ptable - partition table for the private partitions
- * @magic: magic number, must be SMEM_PTABLE_MAGIC
- * @version: version of the partition table
- * @num_entries: number of partitions in the table
- * @reserved: for now reserved entries
- * @entry: list of @smem_ptable_entry for the @num_entries partitions
- */
-struct smem_ptable {
- u8 magic[4];
- __le32 version;
- __le32 num_entries;
- __le32 reserved[5];
- struct smem_ptable_entry entry[];
-};
-
-static const u8 SMEM_PTABLE_MAGIC[] = { 0x24, 0x54, 0x4f, 0x43 }; /* "$TOC" */
-
-/**
- * struct smem_partition_header - header of the partitions
- * @magic: magic number, must be SMEM_PART_MAGIC
- * @host0: first processor/host with access to this partition
- * @host1: second processor/host with access to this partition
- * @size: size of the partition
- * @offset_free_uncached: offset to the first free byte of uncached memory in
- * this partition
- * @offset_free_cached: offset to the first free byte of cached memory in this
- * partition
- * @reserved: for now reserved entries
- */
-struct smem_partition_header {
- u8 magic[4];
- __le16 host0;
- __le16 host1;
- __le32 size;
- __le32 offset_free_uncached;
- __le32 offset_free_cached;
- __le32 reserved[3];
-};
-
-static const u8 SMEM_PART_MAGIC[] = { 0x24, 0x50, 0x52, 0x54 };
-
-/**
- * struct smem_private_entry - header of each item in the private partition
- * @canary: magic number, must be SMEM_PRIVATE_CANARY
- * @item: identifying number of the smem item
- * @size: size of the data, including padding bytes
- * @padding_data: number of bytes of padding of data
- * @padding_hdr: number of bytes of padding between the header and the data
- * @reserved: for now reserved entry
- */
-struct smem_private_entry {
- u16 canary; /* bytes are the same so no swapping needed */
- __le16 item;
- __le32 size; /* includes padding bytes */
- __le16 padding_data;
- __le16 padding_hdr;
- __le32 reserved;
-};
-#define SMEM_PRIVATE_CANARY 0xa5a5
-
-/**
- * struct smem_info - smem region info located after the table of contents
- * @magic: magic number, must be SMEM_INFO_MAGIC
- * @size: size of the smem region
- * @base_addr: base address of the smem region
- * @reserved: for now reserved entry
- * @num_items: highest accepted item number
- */
-struct smem_info {
- u8 magic[4];
- __le32 size;
- __le32 base_addr;
- __le32 reserved;
- __le16 num_items;
-};
-
-static const u8 SMEM_INFO_MAGIC[] = { 0x53, 0x49, 0x49, 0x49 }; /* SIII */
-
-/**
- * struct smem_region - representation of a chunk of memory used for smem
- * @aux_base: identifier of aux_mem base
- * @virt_base: virtual base address of memory with this aux_mem identifier
- * @size: size of the memory region
- */
-struct smem_region {
- u32 aux_base;
- void __iomem *virt_base;
- size_t size;
-};
-
-/**
- * struct qcom_smem - device data for the smem device
- * @dev: device pointer
- * @global_partition: pointer to global partition when in use
- * @global_cacheline: cacheline size for global partition
- * @partitions: list of pointers to partitions affecting the current
- * processor/host
- * @cacheline: list of cacheline sizes for each host
- * @item_count: max accepted item number
- * @num_regions: number of @regions
- * @regions: list of the memory regions defining the shared memory
- */
-struct qcom_smem {
- struct udevice *dev;
-
- struct smem_partition_header *global_partition;
- size_t global_cacheline;
- struct smem_partition_header *partitions[SMEM_HOST_COUNT];
- size_t cacheline[SMEM_HOST_COUNT];
- u32 item_count;
-
- unsigned int num_regions;
- struct smem_region regions[0];
-};
-
-static struct smem_private_entry *
-phdr_to_last_uncached_entry(struct smem_partition_header *phdr)
-{
- void *p = phdr;
-
- return p + le32_to_cpu(phdr->offset_free_uncached);
-}
-
-static void *phdr_to_first_cached_entry(struct smem_partition_header *phdr,
- size_t cacheline)
-{
- void *p = phdr;
-
- return p + le32_to_cpu(phdr->size) - ALIGN(sizeof(*phdr), cacheline);
-}
-
-static void *phdr_to_last_cached_entry(struct smem_partition_header *phdr)
-{
- void *p = phdr;
-
- return p + le32_to_cpu(phdr->offset_free_cached);
-}
-
-static struct smem_private_entry *
-phdr_to_first_uncached_entry(struct smem_partition_header *phdr)
-{
- void *p = phdr;
-
- return p + sizeof(*phdr);
-}
-
-static struct smem_private_entry *
-uncached_entry_next(struct smem_private_entry *e)
-{
- void *p = e;
-
- return p + sizeof(*e) + le16_to_cpu(e->padding_hdr) +
- le32_to_cpu(e->size);
-}
-
-static struct smem_private_entry *
-cached_entry_next(struct smem_private_entry *e, size_t cacheline)
-{
- void *p = e;
-
- return p - le32_to_cpu(e->size) - ALIGN(sizeof(*e), cacheline);
-}
-
-static void *uncached_entry_to_item(struct smem_private_entry *e)
-{
- void *p = e;
-
- return p + sizeof(*e) + le16_to_cpu(e->padding_hdr);
-}
-
-static void *cached_entry_to_item(struct smem_private_entry *e)
-{
- void *p = e;
-
- return p - le32_to_cpu(e->size);
-}
-
-/* Pointer to the one and only smem handle */
-static struct qcom_smem *__smem;
-
-static int qcom_smem_alloc_private(struct qcom_smem *smem,
- struct smem_partition_header *phdr,
- unsigned int item,
- size_t size)
-{
- struct smem_private_entry *hdr, *end;
- size_t alloc_size;
- void *cached;
-
- hdr = phdr_to_first_uncached_entry(phdr);
- end = phdr_to_last_uncached_entry(phdr);
- cached = phdr_to_last_cached_entry(phdr);
-
- while (hdr < end) {
- if (hdr->canary != SMEM_PRIVATE_CANARY) {
- dev_err(smem->dev,
- "Found invalid canary in hosts %d:%d partition\n",
- phdr->host0, phdr->host1);
- return -EINVAL;
- }
-
- if (le16_to_cpu(hdr->item) == item)
- return -EEXIST;
-
- hdr = uncached_entry_next(hdr);
- }
-
- /* Check that we don't grow into the cached region */
- alloc_size = sizeof(*hdr) + ALIGN(size, 8);
- if ((void *)hdr + alloc_size >= cached) {
- dev_err(smem->dev, "Out of memory\n");
- return -ENOSPC;
- }
-
- hdr->canary = SMEM_PRIVATE_CANARY;
- hdr->item = cpu_to_le16(item);
- hdr->size = cpu_to_le32(ALIGN(size, 8));
- hdr->padding_data = cpu_to_le16(le32_to_cpu(hdr->size) - size);
- hdr->padding_hdr = 0;
-
- /*
- * Ensure the header is written before we advance the free offset, so
- * that remote processors that does not take the remote spinlock still
- * gets a consistent view of the linked list.
- */
- dmb();
- le32_add_cpu(&phdr->offset_free_uncached, alloc_size);
-
- return 0;
-}
-
-static int qcom_smem_alloc_global(struct qcom_smem *smem,
- unsigned int item,
- size_t size)
-{
- struct smem_global_entry *entry;
- struct smem_header *header;
-
- header = smem->regions[0].virt_base;
- entry = &header->toc[item];
- if (entry->allocated)
- return -EEXIST;
-
- size = ALIGN(size, 8);
- if (WARN_ON(size > le32_to_cpu(header->available)))
- return -ENOMEM;
-
- entry->offset = header->free_offset;
- entry->size = cpu_to_le32(size);
-
- /*
- * Ensure the header is consistent before we mark the item allocated,
- * so that remote processors will get a consistent view of the item
- * even though they do not take the spinlock on read.
- */
- dmb();
- entry->allocated = cpu_to_le32(1);
-
- le32_add_cpu(&header->free_offset, size);
- le32_add_cpu(&header->available, -size);
-
- return 0;
-}
-
-/**
- * qcom_smem_alloc() - allocate space for a smem item
- * @host: remote processor id, or -1
- * @item: smem item handle
- * @size: number of bytes to be allocated
- *
- * Allocate space for a given smem item of size @size, given that the item is
- * not yet allocated.
- */
-static int qcom_smem_alloc(unsigned int host, unsigned int item, size_t size)
-{
- struct smem_partition_header *phdr;
- int ret;
-
- if (!__smem)
- return -ENOMEM;
-
- if (item < SMEM_ITEM_LAST_FIXED) {
- dev_err(__smem->dev,
- "Rejecting allocation of static entry %d\n", item);
- return -EINVAL;
- }
-
- if (WARN_ON(item >= __smem->item_count))
- return -EINVAL;
-
- if (host < SMEM_HOST_COUNT && __smem->partitions[host]) {
- phdr = __smem->partitions[host];
- ret = qcom_smem_alloc_private(__smem, phdr, item, size);
- } else if (__smem->global_partition) {
- phdr = __smem->global_partition;
- ret = qcom_smem_alloc_private(__smem, phdr, item, size);
- } else {
- ret = qcom_smem_alloc_global(__smem, item, size);
- }
-
- return ret;
-}
-
-static void *qcom_smem_get_global(struct qcom_smem *smem,
- unsigned int item,
- size_t *size)
-{
- struct smem_header *header;
- struct smem_region *area;
- struct smem_global_entry *entry;
- u32 aux_base;
- unsigned int i;
-
- header = smem->regions[0].virt_base;
- entry = &header->toc[item];
- if (!entry->allocated)
- return ERR_PTR(-ENXIO);
-
- aux_base = le32_to_cpu(entry->aux_base) & AUX_BASE_MASK;
-
- for (i = 0; i < smem->num_regions; i++) {
- area = &smem->regions[i];
-
- if (area->aux_base == aux_base || !aux_base) {
- if (size != NULL)
- *size = le32_to_cpu(entry->size);
- return area->virt_base + le32_to_cpu(entry->offset);
- }
- }
-
- return ERR_PTR(-ENOENT);
-}
-
-static void *qcom_smem_get_private(struct qcom_smem *smem,
- struct smem_partition_header *phdr,
- size_t cacheline,
- unsigned int item,
- size_t *size)
-{
- struct smem_private_entry *e, *end;
-
- e = phdr_to_first_uncached_entry(phdr);
- end = phdr_to_last_uncached_entry(phdr);
-
- while (e < end) {
- if (e->canary != SMEM_PRIVATE_CANARY)
- goto invalid_canary;
-
- if (le16_to_cpu(e->item) == item) {
- if (size != NULL)
- *size = le32_to_cpu(e->size) -
- le16_to_cpu(e->padding_data);
-
- return uncached_entry_to_item(e);
- }
-
- e = uncached_entry_next(e);
- }
-
- /* Item was not found in the uncached list, search the cached list */
-
- e = phdr_to_first_cached_entry(phdr, cacheline);
- end = phdr_to_last_cached_entry(phdr);
-
- while (e > end) {
- if (e->canary != SMEM_PRIVATE_CANARY)
- goto invalid_canary;
-
- if (le16_to_cpu(e->item) == item) {
- if (size != NULL)
- *size = le32_to_cpu(e->size) -
- le16_to_cpu(e->padding_data);
-
- return cached_entry_to_item(e);
- }
-
- e = cached_entry_next(e, cacheline);
- }
-
- return ERR_PTR(-ENOENT);
-
-invalid_canary:
- dev_err(smem->dev, "Found invalid canary in hosts %d:%d partition\n",
- phdr->host0, phdr->host1);
-
- return ERR_PTR(-EINVAL);
-}
-
-/**
- * qcom_smem_get() - resolve ptr of size of a smem item
- * @host: the remote processor, or -1
- * @item: smem item handle
- * @size: pointer to be filled out with size of the item
- *
- * Looks up smem item and returns pointer to it. Size of smem
- * item is returned in @size.
- */
-static void *qcom_smem_get(unsigned int host, unsigned int item, size_t *size)
-{
- struct smem_partition_header *phdr;
- size_t cacheln;
- void *ptr = ERR_PTR(-ENOMEM);
-
- if (!__smem)
- return ptr;
-
- if (WARN_ON(item >= __smem->item_count))
- return ERR_PTR(-EINVAL);
-
- if (host < SMEM_HOST_COUNT && __smem->partitions[host]) {
- phdr = __smem->partitions[host];
- cacheln = __smem->cacheline[host];
- ptr = qcom_smem_get_private(__smem, phdr, cacheln, item, size);
- } else if (__smem->global_partition) {
- phdr = __smem->global_partition;
- cacheln = __smem->global_cacheline;
- ptr = qcom_smem_get_private(__smem, phdr, cacheln, item, size);
- } else {
- ptr = qcom_smem_get_global(__smem, item, size);
- }
-
- return ptr;
-
-}
-
-/**
- * qcom_smem_get_free_space() - retrieve amount of free space in a partition
- * @host: the remote processor identifying a partition, or -1
- *
- * To be used by smem clients as a quick way to determine if any new
- * allocations has been made.
- */
-static int qcom_smem_get_free_space(unsigned int host)
-{
- struct smem_partition_header *phdr;
- struct smem_header *header;
- unsigned int ret;
-
- if (!__smem)
- return -ENOMEM;
-
- if (host < SMEM_HOST_COUNT && __smem->partitions[host]) {
- phdr = __smem->partitions[host];
- ret = le32_to_cpu(phdr->offset_free_cached) -
- le32_to_cpu(phdr->offset_free_uncached);
- } else if (__smem->global_partition) {
- phdr = __smem->global_partition;
- ret = le32_to_cpu(phdr->offset_free_cached) -
- le32_to_cpu(phdr->offset_free_uncached);
- } else {
- header = __smem->regions[0].virt_base;
- ret = le32_to_cpu(header->available);
- }
-
- return ret;
-}
-
-static int qcom_smem_get_sbl_version(struct qcom_smem *smem)
-{
- struct smem_header *header;
- __le32 *versions;
-
- header = smem->regions[0].virt_base;
- versions = header->version;
-
- return le32_to_cpu(versions[SMEM_MASTER_SBL_VERSION_INDEX]);
-}
-
-static struct smem_ptable *qcom_smem_get_ptable(struct qcom_smem *smem)
-{
- struct smem_ptable *ptable;
- u32 version;
-
- ptable = smem->regions[0].virt_base + smem->regions[0].size - SZ_4K;
- if (memcmp(ptable->magic, SMEM_PTABLE_MAGIC, sizeof(ptable->magic)))
- return ERR_PTR(-ENOENT);
-
- version = le32_to_cpu(ptable->version);
- if (version != 1) {
- dev_err(smem->dev,
- "Unsupported partition header version %d\n", version);
- return ERR_PTR(-EINVAL);
- }
- return ptable;
-}
-
-static u32 qcom_smem_get_item_count(struct qcom_smem *smem)
-{
- struct smem_ptable *ptable;
- struct smem_info *info;
-
- ptable = qcom_smem_get_ptable(smem);
- if (IS_ERR_OR_NULL(ptable))
- return SMEM_ITEM_COUNT;
-
- info = (struct smem_info *)&ptable->entry[ptable->num_entries];
- if (memcmp(info->magic, SMEM_INFO_MAGIC, sizeof(info->magic)))
- return SMEM_ITEM_COUNT;
-
- return le16_to_cpu(info->num_items);
-}
-
-static int qcom_smem_set_global_partition(struct qcom_smem *smem)
-{
- struct smem_partition_header *header;
- struct smem_ptable_entry *entry = NULL;
- struct smem_ptable *ptable;
- u32 host0, host1, size;
- int i;
-
- ptable = qcom_smem_get_ptable(smem);
- if (IS_ERR(ptable))
- return PTR_ERR(ptable);
-
- for (i = 0; i < le32_to_cpu(ptable->num_entries); i++) {
- entry = &ptable->entry[i];
- host0 = le16_to_cpu(entry->host0);
- host1 = le16_to_cpu(entry->host1);
-
- if (host0 == SMEM_GLOBAL_HOST && host0 == host1)
- break;
- }
-
- if (!entry) {
- dev_err(smem->dev, "Missing entry for global partition\n");
- return -EINVAL;
- }
-
- if (!le32_to_cpu(entry->offset) || !le32_to_cpu(entry->size)) {
- dev_err(smem->dev, "Invalid entry for global partition\n");
- return -EINVAL;
- }
-
- if (smem->global_partition) {
- dev_err(smem->dev, "Already found the global partition\n");
- return -EINVAL;
- }
-
- header = smem->regions[0].virt_base + le32_to_cpu(entry->offset);
- host0 = le16_to_cpu(header->host0);
- host1 = le16_to_cpu(header->host1);
-
- if (memcmp(header->magic, SMEM_PART_MAGIC, sizeof(header->magic))) {
- dev_err(smem->dev, "Global partition has invalid magic\n");
- return -EINVAL;
- }
-
- if (host0 != SMEM_GLOBAL_HOST && host1 != SMEM_GLOBAL_HOST) {
- dev_err(smem->dev, "Global partition hosts are invalid\n");
- return -EINVAL;
- }
-
- if (le32_to_cpu(header->size) != le32_to_cpu(entry->size)) {
- dev_err(smem->dev, "Global partition has invalid size\n");
- return -EINVAL;
- }
-
- size = le32_to_cpu(header->offset_free_uncached);
- if (size > le32_to_cpu(header->size)) {
- dev_err(smem->dev,
- "Global partition has invalid free pointer\n");
- return -EINVAL;
- }
-
- smem->global_partition = header;
- smem->global_cacheline = le32_to_cpu(entry->cacheline);
-
- return 0;
-}
-
-static int qcom_smem_enumerate_partitions(struct qcom_smem *smem,
- unsigned int local_host)
-{
- struct smem_partition_header *header;
- struct smem_ptable_entry *entry;
- struct smem_ptable *ptable;
- unsigned int remote_host;
- u32 host0, host1;
- int i;
-
- ptable = qcom_smem_get_ptable(smem);
- if (IS_ERR(ptable))
- return PTR_ERR(ptable);
-
- for (i = 0; i < le32_to_cpu(ptable->num_entries); i++) {
- entry = &ptable->entry[i];
- host0 = le16_to_cpu(entry->host0);
- host1 = le16_to_cpu(entry->host1);
-
- if (host0 != local_host && host1 != local_host)
- continue;
-
- if (!le32_to_cpu(entry->offset))
- continue;
-
- if (!le32_to_cpu(entry->size))
- continue;
-
- if (host0 == local_host)
- remote_host = host1;
- else
- remote_host = host0;
-
- if (remote_host >= SMEM_HOST_COUNT) {
- dev_err(smem->dev,
- "Invalid remote host %d\n",
- remote_host);
- return -EINVAL;
- }
-
- if (smem->partitions[remote_host]) {
- dev_err(smem->dev,
- "Already found a partition for host %d\n",
- remote_host);
- return -EINVAL;
- }
-
- header = smem->regions[0].virt_base + le32_to_cpu(entry->offset);
- host0 = le16_to_cpu(header->host0);
- host1 = le16_to_cpu(header->host1);
-
- if (memcmp(header->magic, SMEM_PART_MAGIC,
- sizeof(header->magic))) {
- dev_err(smem->dev,
- "Partition %d has invalid magic\n", i);
- return -EINVAL;
- }
-
- if (host0 != local_host && host1 != local_host) {
- dev_err(smem->dev,
- "Partition %d hosts are invalid\n", i);
- return -EINVAL;
- }
-
- if (host0 != remote_host && host1 != remote_host) {
- dev_err(smem->dev,
- "Partition %d hosts are invalid\n", i);
- return -EINVAL;
- }
-
- if (le32_to_cpu(header->size) != le32_to_cpu(entry->size)) {
- dev_err(smem->dev,
- "Partition %d has invalid size\n", i);
- return -EINVAL;
- }
-
- if (le32_to_cpu(header->offset_free_uncached) > le32_to_cpu(header->size)) {
- dev_err(smem->dev,
- "Partition %d has invalid free pointer\n", i);
- return -EINVAL;
- }
-
- smem->partitions[remote_host] = header;
- smem->cacheline[remote_host] = le32_to_cpu(entry->cacheline);
- }
-
- return 0;
-}
-
-static int qcom_smem_map_memory(struct qcom_smem *smem, struct udevice *dev,
- const char *name, int i)
-{
- struct fdt_resource r;
- int ret;
- int node = dev_of_offset(dev);
-
- ret = fdtdec_lookup_phandle(gd->fdt_blob, node, name);
- if (ret < 0) {
- dev_err(dev, "No %s specified\n", name);
- return -EINVAL;
- }
-
- ret = fdt_get_resource(gd->fdt_blob, ret, "reg", 0, &r);
- if (ret)
- return ret;
-
- smem->regions[i].aux_base = (u32)r.start;
- smem->regions[i].size = fdt_resource_size(&r);
- smem->regions[i].virt_base = devm_ioremap(dev, r.start, fdt_resource_size(&r));
- if (!smem->regions[i].virt_base)
- return -ENOMEM;
-
- return 0;
-}
-
-static int qcom_smem_probe(struct udevice *dev)
-{
- struct smem_header *header;
- struct qcom_smem *smem;
- size_t array_size;
- int num_regions;
- u32 version;
- int ret;
- int node = dev_of_offset(dev);
-
- num_regions = 1;
- if (fdtdec_lookup_phandle(gd->fdt_blob, node, "qcomrpm-msg-ram") >= 0)
- num_regions++;
-
- array_size = num_regions * sizeof(struct smem_region);
- smem = devm_kzalloc(dev, sizeof(*smem) + array_size, GFP_KERNEL);
- if (!smem)
- return -ENOMEM;
-
- smem->dev = dev;
- smem->num_regions = num_regions;
-
- ret = qcom_smem_map_memory(smem, dev, "memory-region", 0);
- if (ret)
- return ret;
-
- if (num_regions > 1) {
- ret = qcom_smem_map_memory(smem, dev,
- "qcom,rpm-msg-ram", 1);
- if (ret)
- return ret;
- }
-
- header = smem->regions[0].virt_base;
- if (le32_to_cpu(header->initialized) != 1 ||
- le32_to_cpu(header->reserved)) {
- dev_err(dev, "SMEM is not initialized by SBL\n");
- return -EINVAL;
- }
-
- version = qcom_smem_get_sbl_version(smem);
- switch (version >> 16) {
- case SMEM_GLOBAL_PART_VERSION:
- ret = qcom_smem_set_global_partition(smem);
- if (ret < 0)
- return ret;
- smem->item_count = qcom_smem_get_item_count(smem);
- break;
- case SMEM_GLOBAL_HEAP_VERSION:
- smem->item_count = SMEM_ITEM_COUNT;
- break;
- default:
- dev_err(dev, "Unsupported SMEM version 0x%x\n", version);
- return -EINVAL;
- }
-
- ret = qcom_smem_enumerate_partitions(smem, SMEM_HOST_APPS);
- if (ret < 0 && ret != -ENOENT)
- return ret;
-
- __smem = smem;
-
- return 0;
-}
-
-static int qcom_smem_remove(struct udevice *dev)
-{
- __smem = NULL;
-
- return 0;
-}
-
-const struct udevice_id qcom_smem_of_match[] = {
- { .compatible = "qcom,smem" },
- { }
-};
-
-static const struct smem_ops msm_smem_ops = {
- .alloc = qcom_smem_alloc,
- .get = qcom_smem_get,
- .get_free_space = qcom_smem_get_free_space,
-};
-
-U_BOOT_DRIVER(qcom_smem) = {
- .name = "qcom_smem",
- .id = UCLASS_SMEM,
- .of_match = qcom_smem_of_match,
- .ops = &msm_smem_ops,
- .probe = qcom_smem_probe,
- .remove = qcom_smem_remove,
-};
diff --git a/drivers/smem/sandbox_smem.c b/drivers/smem/sandbox_smem.c
deleted file mode 100644
index fec98e5611d6..000000000000
--- a/drivers/smem/sandbox_smem.c
+++ /dev/null
@@ -1,44 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (c) 2018 Ramon Fried <ramon.fried at gmail.com>
- */
-
-#include <dm.h>
-#include <errno.h>
-#include <smem.h>
-#include <asm/test.h>
-
-static int sandbox_smem_alloc(unsigned int host,
- unsigned int item, size_t size)
-{
- return 0;
-}
-
-static void *sandbox_smem_get(unsigned int host,
- unsigned int item, size_t *size)
-{
- return NULL;
-}
-
-static int sandbox_smem_get_free_space(unsigned int host)
-{
- return 0;
-}
-
-static const struct smem_ops sandbox_smem_ops = {
- .alloc = sandbox_smem_alloc,
- .get = sandbox_smem_get,
- .get_free_space = sandbox_smem_get_free_space,
-};
-
-static const struct udevice_id sandbox_smem_ids[] = {
- { .compatible = "sandbox,smem" },
- { }
-};
-
-U_BOOT_DRIVER(smem_sandbox) = {
- .name = "smem_sandbox",
- .id = UCLASS_SMEM,
- .of_match = sandbox_smem_ids,
- .ops = &sandbox_smem_ops,
-};
--
2.47.0
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