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kernel_samsung_a34x-permissive/drivers/misc/mediatek/m4u/2.0/m4u.c

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Import A346BXXU1AWB9 kernel source Android 13
2024-04-28 06:49:01 -07:00
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2019 MediaTek Inc.
*/
#include <linux/uaccess.h>
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/miscdevice.h>
#include <linux/io.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/spinlock.h>
#include <linux/delay.h>
#include <linux/fb.h>
/* #include <linux/earlysuspend.h> */
#include <linux/mm.h>
#include <linux/mman.h>
#include <linux/vmalloc.h>
#include <linux/slab.h>
#include <linux/timer.h>
//#include <mt-plat/sync_write.h>
#include <asm/cacheflush.h>
#include <linux/mm.h>
#include <linux/pagemap.h>
#include <linux/dma-direction.h>
#include <asm/page.h>
#include <linux/proc_fs.h>
#ifndef CONFIG_ARM64
#include "mm/dma.h"
#endif
#include "m4u_priv.h"
#include "m4u.h"
#include "m4u_hw.h"
#ifdef CONFIG_MTK_SMI_EXT
#include "smi_public.h"
#endif
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_address.h>
#ifdef M4U_TEE_SERVICE_ENABLE
#include "m4u_sec_gp.h"
#if defined(CONFIG_TRUSTONIC_TEE_SUPPORT) && \
!defined(CONFIG_TEE)
#include "mobicore_driver_api.h"
#endif
#include "tz_m4u.h"
#ifdef __M4U_SECURE_SYSTRACE_ENABLE__
#include <linux/sectrace.h>
#endif
int m4u_tee_en;
#endif
#if IS_ENABLED(CONFIG_COMPAT)
#include <linux/uaccess.h>
#include <linux/compat.h>
#endif
static struct m4u_buf_info gMvaNode_unknown = {
.va = 0,
.mva = 0,
.size = 0,
.port = M4U_PORT_UNKNOWN,
};
/* ---------------------------Global variables-----------------------------// */
#ifdef M4U_PROFILE
mmp_event M4U_MMP_Events[M4U_MMP_MAX];
#endif
#define M4U_DEV_NAME "m4u"
struct m4u_device *gM4uDev;
static int m4u_buf_show(void *priv, unsigned int mva_start,
unsigned int mva_end, void *data)
{
struct m4u_buf_info *pMvaInfo = priv;
M4U_PRINT_SEQ(data,
"0x%-8x, 0x%-8x, 0x%lx, 0x%-8x, 0x%x, %s, 0x%x, 0x%x, 0x%x\n",
pMvaInfo->mva, pMvaInfo->mva+pMvaInfo->size-1, pMvaInfo->va,
pMvaInfo->size, pMvaInfo->prot,
m4u_get_port_name(pMvaInfo->port),
pMvaInfo->flags, mva_start, mva_end);
return 0;
}
int m4u_dump_buf_info(struct seq_file *seq)
{
M4U_PRINT_SEQ(seq, "\ndump mva allocated info ========>\n");
M4U_PRINT_SEQ(seq,
"mva_start mva_end va size prot module flags debug1 debug2\n");
mva_foreach_priv((void *) m4u_buf_show, seq);
M4U_PRINT_SEQ(seq, " dump mva allocated info done ========>\n");
return 0;
}
#ifdef M4U_PROFILE
static void m4u_profile_init(void)
{
mmp_event M4U_Event;
mmprofile_enable(1);
M4U_Event = mmprofile_register_event(MMP_ROOT_EVENT, "M4U");
/* register events */
M4U_MMP_Events[M4U_MMP_ALLOC_MVA] = mmprofile_register_event(
M4U_Event,
"Alloc MVA");
M4U_MMP_Events[M4U_MMP_DEALLOC_MVA] = mmprofile_register_event(
M4U_Event,
"DeAlloc MVA");
M4U_MMP_Events[M4U_MMP_CONFIG_PORT] = mmprofile_register_event(
M4U_Event,
"Config Port");
M4U_MMP_Events[M4U_MMP_M4U_ERROR] = mmprofile_register_event(
M4U_Event,
"M4U ERROR");
M4U_MMP_Events[M4U_MMP_CACHE_SYNC] = mmprofile_register_event(
M4U_Event,
"M4U_CACHE_SYNC");
M4U_MMP_Events[M4U_MMP_TOGGLE_CG] = mmprofile_register_event(
M4U_Event,
"M4U_Toggle_CG");
/* enable events by default */
mmprofile_enable_event(M4U_MMP_Events[M4U_MMP_ALLOC_MVA], 1);
mmprofile_enable_event(M4U_MMP_Events[M4U_MMP_DEALLOC_MVA], 1);
mmprofile_enable_event(M4U_MMP_Events[M4U_MMP_CONFIG_PORT], 1);
mmprofile_enable_event(M4U_MMP_Events[M4U_MMP_M4U_ERROR], 1);
mmprofile_enable_event(M4U_MMP_Events[M4U_MMP_CACHE_SYNC], 1);
/* mmprofile_enable_event(M4U_MMP_Events[M4U_MMP_TOGGLE_CG], 0); */
mmprofile_start(1);
}
#endif
/* get ref count on all pages in sgtable */
int m4u_get_sgtable_pages(struct sg_table *table)
{
return 0;
}
/* put ref count on all pages in sgtable */
int m4u_put_sgtable_pages(struct sg_table *table)
{
int i;
struct scatterlist *sg;
for_each_sg(table->sgl, sg, table->nents, i) {
struct page *page = sg_page(sg);
if (page)
put_page(page);
}
return 0;
}
static struct m4u_buf_info *m4u_alloc_buf_info(void)
{
struct m4u_buf_info *pList = NULL;
pList = kzalloc(sizeof(struct m4u_buf_info), GFP_KERNEL);
if (pList == NULL)
return NULL;
INIT_LIST_HEAD(&(pList->link));
return pList;
}
static int m4u_free_buf_info(struct m4u_buf_info *pList)
{
kfree(pList);
return 0;
}
static int m4u_client_add_buf(struct m4u_client_t *client,
struct m4u_buf_info *pList)
{
mutex_lock(&(client->dataMutex));
list_add(&(pList->link), &(client->mvaList));
mutex_unlock(&(client->dataMutex));
return 0;
}
/*static int m4u_client_del_buf(struct m4u_client_t *client,
*m4u_buf_info_t *pList)
*/
/*{*/
/* mutex_lock(&(client->dataMutex));*/
/* list_del(&(pList->link));*/
/* mutex_unlock(&(client->dataMutex));*/
/* return 0;*/
/*}*/
/***********************************************************/
/** find or delete a buffer from client list
* @param client -- client to be searched
* @param mva -- mva to be searched
* @param del -- should we del this buffer from client?
*
* @return buffer_info if found, NULL on fail
* @remark
* @see
* @to-do we need to add multi domain support here.
* @author K Zhang @date 2013/11/14
************************************************************/
static struct m4u_buf_info *m4u_client_find_buf(
struct m4u_client_t *client,
unsigned int mva, int del)
{
struct list_head *pListHead;
struct m4u_buf_info *pList = NULL;
struct m4u_buf_info *ret = NULL;
if (client == NULL) {
m4u_err("m4u_delete_from_garbage_list(), client is NULL!\n");
m4u_dump_buf_info(NULL);
return NULL;
}
mutex_lock(&(client->dataMutex));
list_for_each(pListHead, &(client->mvaList)) {
pList = container_of(pListHead, struct m4u_buf_info, link);
if (pList->mva == mva)
break;
}
if (pListHead == &(client->mvaList)) {
ret = NULL;
} else {
if (del)
list_del(pListHead);
ret = pList;
}
mutex_unlock(&(client->dataMutex));
return ret;
}
/*dump buf info in client*/
/*static void m4u_client_dump_buf(
*struct m4u_client_t *client, const char *pMsg)
*
*{
* m4u_buf_info_t *pList;
* struct list_head *pListHead;
*
* m4u_err("print mva list [%s] ================>\n", pMsg);
* mutex_lock(&(client->dataMutex));
* list_for_each(pListHead, &(client->mvaList))
* {
* pList = container_of(pListHead, m4u_buf_info_t, link);
* m4u_err("port=%s, va=0x%x, size=0x%x, mva=0x%x, prot=%d\n",
* m4u_get_port_name(pList->port),
* pList->va, pList->size, pList->mva, pList->prot);
* }
* mutex_unlock(&(client->dataMutex));
* m4u_err("print mva list done ================>\n");
*}
*/
struct m4u_client_t *m4u_create_client(void)
{
struct m4u_client_t *client;
client = kmalloc(sizeof(struct m4u_client_t), GFP_ATOMIC);
if (!client)
return NULL;
mutex_init(&(client->dataMutex));
mutex_lock(&(client->dataMutex));
client->open_pid = current->pid;
client->open_tgid = current->tgid;
INIT_LIST_HEAD(&(client->mvaList));
mutex_unlock(&(client->dataMutex));
return client;
}
int m4u_destroy_client(struct m4u_client_t *client)
{
struct m4u_buf_info *pMvaInfo;
unsigned int mva, size;
M4U_PORT_ID port;
if (!client) {
m4u_err("warning: %s, client is NULL!\n", __func__);
return -1;
}
while (1) {
mutex_lock(&(client->dataMutex));
if (list_empty(&client->mvaList)) {
mutex_unlock(&(client->dataMutex));
break;
}
pMvaInfo = container_of(client->mvaList.next,
struct m4u_buf_info, link);
m4u_err(
"warnning: clean garbage at m4u close: module=%s,va=0x%lx,mva=0x%x,size=%d\n",
m4u_get_port_name(pMvaInfo->port), pMvaInfo->va,
pMvaInfo->mva, pMvaInfo->size);
port = pMvaInfo->port;
mva = pMvaInfo->mva;
size = pMvaInfo->size;
mutex_unlock(&(client->dataMutex));
m4u_reclaim_notify(port, mva, size);
/* m4u_dealloc_mva will lock client->dataMutex again */
m4u_dealloc_mva(client, port, mva);
}
kfree(client);
return 0;
}
static int m4u_dump_mmaps(unsigned long addr)
{
struct vm_area_struct *vma;
m4u_mid_info("addr=0x%lx, name=%s, pid=0x%x,",
addr, current->comm, current->pid);
vma = find_vma(current->mm, addr);
if (vma && (addr >= vma->vm_start)) {
m4u_mid_info("find vma: 0x%16lx-0x%16lx, flags=0x%lx\n",
(vma->vm_start), (vma->vm_end), vma->vm_flags);
return 0;
}
m4u_err("cannot find vma for addr 0x%lx\n", addr);
return -1;
}
/* to-do: need modification to support 4G DRAM */
static phys_addr_t m4u_user_v2p(unsigned long va)
{
unsigned long pageOffset = (va & (PAGE_SIZE - 1));
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
phys_addr_t pa;
if (current == NULL) {
m4u_err("warning: %s, current is NULL!\n", __func__);
return 0;
}
if (current->mm == NULL) {
m4u_err("warning: %s, current->mm is NULL! tgid=0x%x, name=%s\n",
__func__, current->tgid, current->comm);
return 0;
}
pgd = pgd_offset(current->mm, va); /* what is tsk->mm */
if (pgd_none(*pgd) || pgd_bad(*pgd)) {
m4u_err("%s(), va=0x%lx, pgd invalid!\n", __func__, va);
return 0;
}
pud = pud_offset(pgd, va);
if (pud_none(*pud) || pud_bad(*pud)) {
m4u_err("%s(), va=0x%lx, pud invalid!\n", __func__, va);
return 0;
}
pmd = pmd_offset(pud, va);
if (pmd_none(*pmd) || pmd_bad(*pmd)) {
m4u_err("%s(), va=0x%lx, pmd invalid!\n", __func__, va);
return 0;
}
pte = pte_offset_map(pmd, va);
if (pte_present(*pte)) {
/* pa=(pte_val(*pte) & (PAGE_MASK)) | pageOffset; */
pa = (pte_val(*pte) & (PHYS_MASK) & (~((phys_addr_t) 0xfff))) |
pageOffset;
pte_unmap(pte);
return pa;
}
pte_unmap(pte);
m4u_err("%s(), va=0x%lx, pte invalid!\n", __func__, va);
return 0;
}
static int m4u_fill_sgtable_user(struct vm_area_struct *vma,
unsigned long va,
int page_num,
struct scatterlist **pSg, int has_page)
{
unsigned long va_align;
phys_addr_t pa = 0;
int i;
long ret = 0;
struct scatterlist *sg = *pSg;
struct page *pages = NULL;
int gup_flags;
va_align = round_down(va, PAGE_SIZE);
gup_flags = FOLL_TOUCH | FOLL_POPULATE | FOLL_MLOCK;
if (vma->vm_flags & VM_LOCKONFAULT)
gup_flags &= ~FOLL_POPULATE;
/*
* We want to touch writable mappings with a write fault in order
* to break COW, except for shared mappings because these don't COW
* and we would not want to dirty them for nothing.
*/
if ((vma->vm_flags & (VM_WRITE | VM_SHARED)) == VM_WRITE)
gup_flags |= FOLL_WRITE;
/*
* We want mlock to succeed for regions that have any permissions
* other than PROT_NONE.
*/
if (vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC))
gup_flags |= FOLL_FORCE;
for (i = 0; i < page_num; i++) {
int fault_cnt;
unsigned long va_tmp = va_align + i * PAGE_SIZE;
pa = 0;
for (fault_cnt = 0; fault_cnt < 3000; fault_cnt++) {
if (has_page) {
ret = get_user_pages(va_tmp, 1,
gup_flags,
&pages, NULL);
if (ret == 1)
pa = page_to_phys(pages) |
(va_tmp & ~PAGE_MASK);
} else {
pa = m4u_user_v2p(va_tmp);
if (!pa) {
handle_mm_fault(vma, va_tmp,
(vma->vm_flags & VM_WRITE) ?
FAULT_FLAG_WRITE : 0);
}
}
if (pa) {
/* Add one line comment for avoid kernel coding style, WARNING:BRACES: */
break;
}
cond_resched();
}
if (!pa || !sg) {
struct vm_area_struct *vma_temp;
m4u_err("%s: fail(0x%lx) va=0x%lx,page_num=0x%x\n",
__func__, ret, va, page_num);
m4u_err("%s: fail_va=0x%lx,pa=0x%lx,sg=0x%p,i=%d\n",
__func__, va_tmp, (unsigned long)pa, sg, i);
vma_temp = find_vma(current->mm, va_tmp);
if (vma_temp != NULL) {
m4u_err(
"vm_start=0x%lx, vm_end=%lx, vm_flag= %lx\n",
vma->vm_start, vma->vm_end, vma->vm_flags);
m4u_err(
"vma_temp_start=0x%lx, vma_temp_end=%lx, vm_temp_flag= %lx\n",
vma_temp->vm_start, vma_temp->vm_end,
vma_temp->vm_flags);
}
show_pte(current->mm, va_tmp);
m4u_dump_mmaps(va);
m4u_dump_mmaps(va_tmp);
return -1;
}
if (fault_cnt > 2) {
m4u_info(
"warning: handle_mm_fault for %d times\n",
fault_cnt);
show_pte(current->mm, va_tmp);
m4u_dump_mmaps(va_tmp);
}
/* debug check... */
if ((pa & (PAGE_SIZE - 1)) != 0) {
m4u_mid_info("pa error, pa: 0x%lx, va: 0x%lx, align: 0x%lx\n",
(unsigned long)pa, va_tmp, va_align);
}
if (has_page) {
struct page *page;
page = phys_to_page(pa);
/* m4u_err("page=0x%x, pfn=%d\n", page, __phys_to_pfn(pa)); */
sg_set_page(sg, page, PAGE_SIZE, 0);
#ifdef CONFIG_NEED_SG_DMA_LENGTH
sg->dma_length = sg->length;
#endif
} else {
sg_dma_address(sg) = pa;
sg_dma_len(sg) = PAGE_SIZE;
}
sg = sg_next(sg);
}
*pSg = sg;
return 0;
}
static int m4u_create_sgtable_user(unsigned long va_align,
struct sg_table *table)
{
int ret = 0;
struct vm_area_struct *vma;
struct scatterlist *sg = table->sgl;
unsigned int left_page_num = table->nents;
unsigned long va = va_align;
down_read(&current->mm->mmap_sem);
while (left_page_num) {
unsigned int vma_page_num;
vma = find_vma(current->mm, va);
if (vma == NULL || vma->vm_start > va) {
m4u_err(
"cannot find vma: va=0x%lx, vma=0x%p\n",
va, vma);
if (vma != NULL) {
m4u_err(
"vm_start=0x%lx, vm_end=0x%lx, vm_flag= 0x%lx\n",
vma->vm_start, vma->vm_end, vma->vm_flags);
}
m4u_dump_mmaps(va);
ret = -1;
goto out;
} else {
/* m4u_mid_info("%s va: 0x%lx, vma->vm_start=0x%lx, vma->vm_end=0x%lx\n",*/
/*__func__, va, vma->vm_start, vma->vm_end); */
}
vma_page_num = (vma->vm_end - va) / PAGE_SIZE;
vma_page_num = min(vma_page_num, left_page_num);
if ((vma->vm_flags) & VM_PFNMAP) {
/* ion va or ioremap vma has this flag */
/* VM_PFNMAP: Page-ranges managed without "struct page", just pure PFN */
ret = m4u_fill_sgtable_user(vma, va, vma_page_num,
&sg, 0);
m4u_mid_info("alloc_mva VM_PFNMAP va=0x%lx, page_num=0x%x\n",
va, vma_page_num);
} else {
/* Add one line comment for avoid kernel coding style, WARNING:BRACES: */
ret = m4u_fill_sgtable_user(
vma, va, vma_page_num, &sg, 1);
if (-1 == ret) {
struct vm_area_struct *vma_temp;
vma_temp = find_vma(current->mm, va_align);
if (!vma_temp) {
m4u_err("%s not find vma\n", __func__);
return -1;
}
m4u_err("%s vm_start=0x%lx, vm_end=0x%lx, vm_flag= 0x%lx\n",
__func__, vma_temp->vm_start,
vma_temp->vm_end, vma_temp->vm_flags);
}
}
if (ret) {
/* Add one line comment for avoid kernel coding style, WARNING:BRACES: */
goto out;
}
left_page_num -= vma_page_num;
va += vma_page_num * PAGE_SIZE;
}
out:
up_read(&current->mm->mmap_sem);
return ret;
}
/* make a sgtable for virtual buffer */
struct sg_table *m4u_create_sgtable(unsigned long va,
unsigned int size)
{
struct sg_table *table;
int ret, i, page_num;
unsigned long va_align;
phys_addr_t pa;
struct scatterlist *sg;
struct page *page;
page_num = M4U_GET_PAGE_NUM(va, size);
va_align = round_down(va, PAGE_SIZE);
table = kmalloc(sizeof(struct sg_table), GFP_KERNEL);
if (!table)
return ERR_PTR(-ENOMEM);
ret = sg_alloc_table(table, page_num, GFP_KERNEL);
if (ret) {
kfree(table);
m4u_err("%s alloc_sgtable fail: va=0x%lx, size=0x%x, page_num=%d\n",
__func__, va, size, page_num);
return ERR_PTR(-ENOMEM);
}
m4u_low_info("%s va=0x%lx, PAGE_OFFSET=0x%lx, VMALLOC_START=0x%lx, VMALLOC_END=0x%lx\n",
__func__, va, PAGE_OFFSET, VMALLOC_START, VMALLOC_END);
if (va < PAGE_OFFSET) { /* from user space */
if (va >= VMALLOC_START && va <= VMALLOC_END) { /* vmalloc */
m4u_mid_info("from user space vmalloc, va = 0x%lx", va);
for_each_sg(table->sgl, sg, table->nents, i) {
page = vmalloc_to_page((void *)(
va_align + i * PAGE_SIZE));
if (!page) {
m4u_err("vmalloc_to_page fail, va=0x%lx\n",
va_align + i * PAGE_SIZE);
goto err;
}
sg_set_page(sg, page, PAGE_SIZE, 0);
}
} else {
ret = m4u_create_sgtable_user(va_align, table);
if (ret) {
m4u_err("%s error va=0x%lx, size=%d\n",
__func__, va, size);
goto err;
}
}
} else { /* from kernel space */
if (va >= VMALLOC_START && va <= VMALLOC_END) { /* vmalloc */
m4u_mid_info("kernel space vmalloc, va = 0x%lx", va);
for_each_sg(table->sgl, sg, table->nents, i) {
page = vmalloc_to_page((void *)(
va_align + i * PAGE_SIZE));
if (!page) {
m4u_err("vmalloc_to_page fail, va=0x%lx\n",
va_align + i * PAGE_SIZE);
goto err;
}
sg_set_page(sg, page, PAGE_SIZE, 0);
}
} else { /* kmalloc to-do: use one entry sgtable. */
for_each_sg(table->sgl, sg, table->nents, i) {
pa = virt_to_phys((void *)(
va_align + i * PAGE_SIZE));
page = phys_to_page(pa);
sg_set_page(sg, page, PAGE_SIZE, 0);
}
}
}
return table;
err:
sg_free_table(table);
kfree(table);
return ERR_PTR(-EFAULT);
}
int m4u_destroy_sgtable(struct sg_table *table)
{
if (!IS_ERR_OR_NULL(table)) {
sg_free_table(table);
kfree(table);
}
return 0;
}
/* #define __M4U_MAP_MVA_TO_KERNEL_FOR_DEBUG__ */
int m4u_alloc_mva(struct m4u_client_t *client, M4U_PORT_ID port,
unsigned long va, struct sg_table *sg_table,
unsigned int size, unsigned int prot, unsigned int flags,
unsigned int *pMva)
{
int ret;
struct m4u_buf_info *pMvaInfo;
unsigned int mva = 0, mva_align, size_align;
#ifdef M4U_PROFILE
mmprofile_log_ex(M4U_MMP_Events[M4U_MMP_ALLOC_MVA],
MMPROFILE_FLAG_START, va,
current->pid);
#endif
if (va && sg_table) {
m4u_mid_info("%s, va or sg_table are both valid: va=0x%lx, sg=0x%p\n",
__func__, va, sg_table);
}
if (!va && !sg_table) {
m4u_err("%s, va or sg_table are both invalid: va=0x%lx, sg=0x%p\n",
__func__, va, sg_table);
ret = -EFAULT;
goto err;
}
if (va && ((flags & M4U_FLAGS_SG_READY) == 0)) {
sg_table = m4u_create_sgtable(va, size);
if (IS_ERR_OR_NULL(sg_table)) {
m4u_err("%s, cannot create sg: larb=%d,module=%s,va=0x%lx,sg=0x%p,size=%d,prot=0x%x,flags=0x%x\n",
__func__, m4u_port_2_larb_id(port),
m4u_get_port_name(port),
va, sg_table, size, prot, flags);
ret = -EFAULT;
goto err;
}
}
/* here we get correct sg_table for this buffer */
pMvaInfo = m4u_alloc_buf_info();
if (!pMvaInfo) {
ret = -ENOMEM;
goto err;
}
pMvaInfo->va = va;
pMvaInfo->port = port;
pMvaInfo->size = size;
pMvaInfo->prot = prot;
pMvaInfo->flags = flags;
pMvaInfo->sg_table = sg_table;
if (flags & M4U_FLAGS_FIX_MVA)
mva = m4u_do_mva_alloc_fix(va, *pMva, size, pMvaInfo);
else if (flags & M4U_FLAGS_START_FROM)
mva = m4u_do_mva_alloc_start_from(va, *pMva, size, pMvaInfo);
else
mva = m4u_do_mva_alloc(va, size, pMvaInfo);
if (mva == 0) {
if (flags & M4U_FLAGS_FIX_MVA)
m4u_err("%s, fix err: p(%d,%d),m:%s,s:%d\n",
__func__, m4u_port_2_larb_id(port),
port, m4u_get_port_name(port), size);
else
m4u_aee_err("%s,%d err: p(%d,%d),m:%s,s:%d\n",
__func__, __LINE__,
m4u_port_2_larb_id(port),
port, m4u_get_port_name(port), size);
m4u_dump_buf_info(NULL);
ret = -EINVAL;
goto err1;
} else
m4u_low_info("%s,mva = 0x%x\n", __func__, mva);
m4u_get_sgtable_pages(sg_table);
mva_align = round_down(mva, PAGE_SIZE);
size_align = PAGE_ALIGN(mva + size - mva_align);
ret = m4u_map_sgtable(m4u_get_domain_by_port(port), mva_align, sg_table,
size_align, pMvaInfo->prot);
if (ret < 0) {
m4u_err("error to map sgtable\n");
goto err2;
}
pMvaInfo->mva = mva;
pMvaInfo->mva_align = mva_align;
pMvaInfo->size_align = size_align;
*pMva = mva;
if (flags & M4U_FLAGS_SEQ_ACCESS)
pMvaInfo->seq_id = m4u_insert_seq_range(
port, mva, mva + size - 1);
m4u_client_add_buf(client, pMvaInfo);
m4u_mid_info("%s: pMvaInfo=0x%p, larb=%d,module=%s,va=0x%lx,sg=0x%p,size=%d,prot=0x%x,flags=0x%x,mva=0x%x\n",
__func__, pMvaInfo, m4u_port_2_larb_id(port),
m4u_get_port_name(port), va,
sg_table, size, prot, flags, mva);
#ifdef M4U_PROFILE
mmprofile_log_ex(M4U_MMP_Events[M4U_MMP_ALLOC_MVA],
MMPROFILE_FLAG_END, port,
mva);
#endif
#ifdef __M4U_MAP_MVA_TO_KERNEL_FOR_DEBUG__
/* map this mva to kernel va just for debug */
{
unsigned long kernel_va;
unsigned int kernel_size;
int ret;
ret = m4u_mva_map_kernel(mva, size, &kernel_va, &kernel_size);
if (ret)
m4u_err("error to map kernel va: mva=0x%x, size=%d\n",
mva, size);
else {
pMvaInfo->mapped_kernel_va_for_debug = kernel_va;
m4u_mid_info("[kernel_va_debug] map va: mva=0x%x, kernel_va=0x%lx, size=0x%x\n",
mva, kernel_va, size);
}
}
#endif
return 0;
err2:
m4u_do_mva_free(mva, size);
err1:
m4u_free_buf_info(pMvaInfo);
err:
if (va)
m4u_destroy_sgtable(sg_table);
*pMva = 0;
m4u_err("error: larb=%d,module=%s,va=0x%lx,size=%d,prot=0x%x,flags=0x%x, mva=0x%x\n",
m4u_port_2_larb_id(port), m4u_get_port_name(port), va, size,
prot, flags, mva);
#ifdef M4U_PROFILE
mmprofile_log_ex(
M4U_MMP_Events[M4U_MMP_ALLOC_MVA], MMPROFILE_FLAG_END, port, 0);
#endif
return ret;
}
/* interface for ion */
static struct m4u_client_t *ion_m4u_client;
int m4u_alloc_mva_sg(struct port_mva_info_t *port_info,
struct sg_table *sg_table)
{
int prot;
int ret;
unsigned int flags = 0;
if (!ion_m4u_client) {
ion_m4u_client = m4u_create_client();
if (IS_ERR_OR_NULL(ion_m4u_client)) {
ion_m4u_client = NULL;
return -1;
}
}
prot = M4U_PROT_READ | M4U_PROT_WRITE
| (port_info->cache_coherent ? (M4U_PROT_SHARE | M4U_PROT_CACHE)
: 0)
| (port_info->security ? M4U_PROT_SEC : 0);
if (port_info->flags & M4U_FLAGS_FIX_MVA) {
if (port_info->iova_end > port_info->iova_start +
port_info->buf_size) {
port_info->mva = port_info->iova_start;
flags = M4U_FLAGS_START_FROM;
} else
flags = M4U_FLAGS_FIX_MVA;
}
if (port_info->flags & M4U_FLAGS_SG_READY)
flags |= M4U_FLAGS_SG_READY;
else
port_info->va = 0;
ret = m4u_alloc_mva(
ion_m4u_client, port_info->emoduleid, port_info->va, sg_table,
port_info->buf_size, prot, flags, &port_info->mva);
return ret;
}
#ifdef M4U_TEE_SERVICE_ENABLE
static int m4u_unmap_nonsec_buffer(unsigned int mva,
unsigned int size);
int m4u_register_mva_share(int module_id, unsigned int mva)
{
struct m4u_buf_info *pMvaInfo;
pMvaInfo = mva_get_priv(mva);
if (!pMvaInfo) {
m4u_err("%s cannot find mva: module=%s, mva=0x%x\n", __func__,
m4u_get_port_name(module_id), mva);
return -1;
}
pMvaInfo->flags |= M4U_FLAGS_SEC_SHAREABLE;
return 0;
}
#endif
int m4u_dealloc_mva_sg(int module_id, struct sg_table *sg_table,
const unsigned int BufSize, const unsigned int MVA)
{
if (!ion_m4u_client) {
m4u_aee_err("ion_m4u_client==NULL !! oops oops~~~~\n");
return -1;
}
return m4u_dealloc_mva(ion_m4u_client, module_id, MVA);
}
/* should not hold client->dataMutex here. */
int m4u_dealloc_mva(struct m4u_client_t *client, M4U_PORT_ID port,
unsigned int mva)
{
struct m4u_buf_info *pMvaInfo;
int ret, is_err = 0;
unsigned int size;
#ifdef M4U_PROFILE
mmprofile_log_ex(M4U_MMP_Events[M4U_MMP_DEALLOC_MVA],
MMPROFILE_FLAG_START,
(current->pid), mva);
#endif
pMvaInfo = m4u_client_find_buf(client, mva, 1);
if (!pMvaInfo) {
ret = -ENOMEM;
return ret;
}
if (unlikely(!pMvaInfo)) {
m4u_err("error: %s no mva found in client! module=%s, mva=0x%x\n",
__func__, m4u_get_port_name(port), mva);
m4u_dump_buf_info(NULL);
#ifdef M4U_PROFILE
mmprofile_log_ex(M4U_MMP_Events[M4U_MMP_DEALLOC_MVA],
MMPROFILE_FLAG_START,
0x5a5a5a5a, mva);
#endif
return -EINVAL;
}
pMvaInfo->flags |= M4U_FLAGS_MVA_IN_FREE;
m4u_mid_info("%s: larb=%d,module=%s,mva=0x%x, size=%d\n", __func__,
m4u_port_2_larb_id(port), m4u_get_port_name(port),
mva, pMvaInfo->size);
#ifdef M4U_TEE_SERVICE_ENABLE
if (pMvaInfo->flags & M4U_FLAGS_SEC_SHAREABLE)
m4u_unmap_nonsec_buffer(mva, pMvaInfo->size);
#endif
ret = m4u_unmap(m4u_get_domain_by_port(port),
pMvaInfo->mva_align,
pMvaInfo->size_align);
if (ret) {
is_err = 1;
m4u_err("m4u_unmap fail\n");
}
if (pMvaInfo->va != 0) {
/* non ion buffer*/
if (pMvaInfo->va < PAGE_OFFSET) { /* from user space */
if (!(pMvaInfo->va >= VMALLOC_START
&& pMvaInfo->va <= VMALLOC_END)) {
/* non vmalloc */
m4u_put_sgtable_pages(pMvaInfo->sg_table);
}
}
}
ret = m4u_do_mva_free(mva, pMvaInfo->size);
if (ret) {
is_err = 1;
m4u_err("do_mva_free fail\n");
}
if (pMvaInfo->va) { /* buffer is allocated by va */
m4u_destroy_sgtable(pMvaInfo->sg_table);
}
if (pMvaInfo->flags & M4U_FLAGS_SEQ_ACCESS) {
if (pMvaInfo->seq_id > 0)
m4u_invalid_seq_range_by_id(port, pMvaInfo->seq_id);
}
if (is_err) {
m4u_aee_err("%s fail:port=%s,mva=0x%x,sz=0x%x, va=0x%lx\n",
__func__, m4u_get_port_name(port),
mva, pMvaInfo->size, pMvaInfo->va);
ret = -EINVAL;
} else
ret = 0;
size = pMvaInfo->size;
#ifdef __M4U_MAP_MVA_TO_KERNEL_FOR_DEBUG__
/* unmap kernel va for debug */
{
if (pMvaInfo->mapped_kernel_va_for_debug) {
m4u_mid_info("[kernel_va_debug] unmap va: mva=0x%x, kernel_va=0x%lx, size=0x%x\n",
pMvaInfo->mva,
pMvaInfo->mapped_kernel_va_for_debug,
pMvaInfo->size);
m4u_mva_unmap_kernel(pMvaInfo->mva, pMvaInfo->size,
pMvaInfo->mapped_kernel_va_for_debug);
}
}
#endif
m4u_free_buf_info(pMvaInfo);
#ifdef M4U_PROFILE
mmprofile_log_ex(M4U_MMP_Events[M4U_MMP_DEALLOC_MVA],
MMPROFILE_FLAG_END, size,
mva);
#endif
return ret;
}
int m4u_dump_info(int m4u_index)
{
return 0;
}
void m4u_get_pgd(struct m4u_client_t *client, M4U_PORT_ID port,
void **pgd_va,
void **pgd_pa,
unsigned int *size)
{
struct m4u_domain *pDomain;
pDomain = m4u_get_domain_by_port(port);
*pgd_va = pDomain->pgd;
*pgd_pa = (void *)(uintptr_t)pDomain->pgd_pa;
*size = M4U_PGD_SIZE;
}
unsigned long m4u_mva_to_pa(struct m4u_client_t *client,
M4U_PORT_ID port,
unsigned int mva)
{
unsigned long pa;
struct m4u_domain *pDomain;
pDomain = m4u_get_domain_by_port(port);
pa = m4u_get_pte(pDomain, mva);
return pa;
}
int m4u_query_mva_info(unsigned int mva, unsigned int size,
unsigned int *real_mva,
unsigned int *real_size)
{
struct m4u_buf_info *pMvaInfo;
if ((!real_mva) || (!real_size))
return -1;
pMvaInfo = mva_get_priv_ext(mva);
if (!pMvaInfo) {
m4u_err("%s cannot find mva: mva=0x%x, size=0x%x\n", __func__,
mva, size);
*real_mva = 0;
*real_size = 0;
return -2;
}
*real_mva = pMvaInfo->mva;
*real_size = pMvaInfo->size;
return 0;
}
EXPORT_SYMBOL(m4u_query_mva_info);
/* map mva buffer to kernel va buffer
* this function should ONLY used for DEBUG
************************************************************/
int m4u_mva_map_kernel(unsigned int mva, unsigned int size,
unsigned long *map_va,
unsigned int *map_size)
{
struct m4u_buf_info *pMvaInfo;
struct sg_table *table;
struct scatterlist *sg;
int i, j, k, ret = 0;
struct page **pages;
unsigned int page_num;
void *kernel_va;
unsigned int kernel_size;
pMvaInfo = mva_get_priv(mva);
if (!pMvaInfo || pMvaInfo->size < size) {
m4u_err("%s cannot find mva: mva=0x%x, size=0x%x\n",
__func__, mva, size);
if (pMvaInfo)
m4u_err("pMvaInfo: mva=0x%x, size=0x%x\n",
pMvaInfo->mva, pMvaInfo->size);
return -1;
}
table = pMvaInfo->sg_table;
page_num = M4U_GET_PAGE_NUM(mva, size);
pages = vmalloc(sizeof(struct page *) * page_num);
if (pages == NULL) {
m4u_err("mva_map_kernel:error to vmalloc for %d\n",
(unsigned int)sizeof(struct page *) * page_num);
return -1;
}
k = 0;
for_each_sg(table->sgl, sg, table->nents, i) {
struct page *page_start;
int pages_in_this_sg = PAGE_ALIGN(sg_dma_len(sg)) / PAGE_SIZE;
#ifdef CONFIG_NEED_SG_DMA_LENGTH
if (sg_dma_address(sg) == 0)
pages_in_this_sg = PAGE_ALIGN(sg->length) / PAGE_SIZE;
#endif
page_start = sg_page(sg);
for (j = 0; j < pages_in_this_sg; j++) {
pages[k++] = page_start++;
if (k >= page_num)
goto get_pages_done;
}
}
get_pages_done:
if (k < page_num) {
/* this should not happen, because we have checked the size before. */
m4u_err(
"mva_map_kernel:only get %d pages: mva=0x%x, size=0x%x, pg_num=%d\n",
k,
mva,
size, page_num);
ret = -1;
goto error_out;
}
kernel_va = 0;
kernel_size = 0;
kernel_va = vmap(pages, page_num, VM_MAP, PAGE_KERNEL);
if (kernel_va == 0 || (unsigned long)kernel_va & M4U_PAGE_MASK) {
m4u_err(
"mva_map_kernel:vmap fail: page_num=%d, kernel_va=0x%p\n",
page_num,
kernel_va);
ret = -2;
goto error_out;
}
kernel_va += ((unsigned long)mva & (M4U_PAGE_MASK));
*map_va = (unsigned long)kernel_va;
*map_size = size;
error_out:
vfree(pages);
m4u_low_info("mva_map_kernel:mva=0x%x,size=0x%x,map_va=0x%lx,map_size=0x%x\n",
mva, size, *map_va, *map_size);
return ret;
}
EXPORT_SYMBOL(m4u_mva_map_kernel);
int m4u_mva_unmap_kernel(unsigned int mva, unsigned int size,
unsigned long map_va)
{
m4u_low_info("mva_unmap_kernel:mva=0x%x,size=0x%x,va=0x%lx\n", mva,
size, map_va);
vunmap((void *)(map_va & (~M4U_PAGE_MASK)));
return 0;
}
EXPORT_SYMBOL(m4u_mva_unmap_kernel);
static int MTK_M4U_open(struct inode *inode, struct file *file)
{
struct m4u_client_t *client;
client = m4u_create_client();
if (IS_ERR_OR_NULL(client)) {
m4u_err("createclientfail\n");
return -ENOMEM;
}
file->private_data = client;
return 0;
}
static int MTK_M4U_release(struct inode *inode,
struct file *file)
{
struct m4u_client_t *client = file->private_data;
m4u_destroy_client(client);
return 0;
}
static int MTK_M4U_flush(struct file *filp, fl_owner_t a_id)
{
return 0;
}
#ifdef M4U_TEE_SERVICE_ENABLE
static DEFINE_MUTEX(gM4u_sec_init);
static int __m4u_sec_init(void)
{
int ret;
void *pgd_va;
unsigned long pt_pa_nonsec;
unsigned int size;
struct m4u_sec_context *ctx;
unsigned int i;
ctx = m4u_sec_ctx_get(CMD_M4UTL_INIT);
if (!ctx)
return -EFAULT;
m4u_get_pgd(NULL, 0, &pgd_va, (void *)&pt_pa_nonsec, &size);
for (i = 0; i < SMI_LARB_NR; i++)
larb_clock_on(i, 1);
ctx->m4u_msg->cmd = CMD_M4UTL_INIT;
ctx->m4u_msg->init_param.nonsec_pt_pa = pt_pa_nonsec;
ctx->m4u_msg->init_param.l2_en = gM4U_L2_enable;
ctx->m4u_msg->init_param.sec_pt_pa = 0;
/* m4u_alloc_sec_pt_for_debug(); */
m4u_high_info("%s call CMD_M4UTL_INIT, nonsec_pt_pa: 0x%lx\n",
__func__, pt_pa_nonsec);
ret = m4u_exec_cmd(ctx);
if (ret) {
M4UERR("m4u exec command fail\n");
goto out;
}
m4u_high_info("%s ret:0x%x, rsp:0x%x\n",
__func__, ret, ctx->m4u_msg->rsp);
/* ret = ctx->m4u_msg->rsp; */
out:
for (i = 0; i < SMI_LARB_NR; i++)
larb_clock_off(i, 1);
m4u_sec_ctx_put(ctx);
return ret;
}
/* ------------------------------------------------------------- */
#ifdef __M4U_SECURE_SYSTRACE_ENABLE__
static int dr_map(unsigned long pa, size_t size)
{
int ret;
mutex_lock(&m4u_dci_mutex);
if (!m4u_dci_msg) {
m4u_err("error: m4u_dci_msg==null\n");
ret = -1;
goto out;
}
memset(m4u_dci_msg, 0, sizeof(struct m4u_msg));
m4u_dci_msg->cmd = CMD_M4U_SYSTRACE_MAP;
m4u_dci_msg->systrace_param.pa = pa;
m4u_dci_msg->systrace_param.size = size;
ret = m4u_exec_cmd(&m4u_dci_session, m4u_dci_msg);
if (ret) {
m4u_err("m4u exec command fail\n");
ret = -1;
goto out;
}
ret = m4u_dci_msg->rsp;
out:
mutex_unlock(&m4u_dci_mutex);
return ret;
}
static int dr_unmap(unsigned long pa, size_t size)
{
int ret;
mutex_lock(&m4u_dci_mutex);
if (!m4u_dci_msg) {
m4u_err("error: m4u_dci_msg==null\n");
ret = -1;
goto out;
}
memset(m4u_dci_msg, 0, sizeof(struct m4u_msg));
m4u_dci_msg->cmd = CMD_M4U_SYSTRACE_UNMAP;
m4u_dci_msg->systrace_param.pa = pa;
m4u_dci_msg->systrace_param.size = size;
ret = m4u_exec_cmd(&m4u_dci_session, m4u_dci_msg);
if (ret) {
m4u_err("m4u exec command fail\n");
ret = -1;
goto out;
}
ret = m4u_dci_msg->rsp;
out:
mutex_unlock(&m4u_dci_mutex);
return ret;
}
static int dr_transact(void)
{
int ret;
mutex_lock(&m4u_dci_mutex);
if (!m4u_dci_msg) {
m4u_err("error: m4u_dci_msg==null\n");
ret = -1;
goto out;
}
memset(m4u_dci_msg, 0, sizeof(struct m4u_msg));
m4u_dci_msg->cmd = CMD_M4U_SYSTRACE_TRANSACT;
m4u_dci_msg->systrace_param.pa = 0;
m4u_dci_msg->systrace_param.size = 0;
ret = m4u_exec_cmd(&m4u_dci_session, m4u_dci_msg);
if (ret) {
m4u_err("m4u exec command fail\n");
ret = -1;
goto out;
}
ret = m4u_dci_msg->rsp;
out:
mutex_unlock(&m4u_dci_mutex);
return ret;
}
#endif
/* ------------------------------------------------------------- */
#if defined(CONFIG_TRUSTONIC_TEE_SUPPORT) && \
!defined(CONFIG_TEE)
static const struct mc_uuid_t m4u_drv_uuid = M4U_DRV_UUID;
static struct mc_session_handle m4u_dci_session;
static struct m4u_msg *m4u_dci_msg;
#endif
int m4u_sec_init(void)
{
int ret;
#if defined(CONFIG_TRUSTONIC_TEE_SUPPORT) && \
!defined(CONFIG_TEE)
enum mc_result mcRet;
#endif
m4u_err("call %s in nornal m4u driver\n", __func__);
#if defined(CONFIG_TRUSTONIC_TEE_SUPPORT) && \
!defined(CONFIG_TEE)
/* Allocating WSM for DCI */
mcRet = mc_malloc_wsm(MC_DEVICE_ID_DEFAULT, 0, sizeof(struct m4u_msg),
(uint8_t **) &m4u_dci_msg, 0);
if (mcRet != MC_DRV_OK) {
m4u_err("tz_m4u: mc_malloc_wsm returned: %d\n", mcRet);
return -1;
}
/* Open session the trustlet */
m4u_dci_session.device_id = MC_DEVICE_ID_DEFAULT;
mcRet = mc_open_session(&m4u_dci_session,
&m4u_drv_uuid,
(uint8_t *) m4u_dci_msg,
(uint32_t) sizeof(struct m4u_msg));
if (mcRet != MC_DRV_OK) {
m4u_err("tz_m4u: mc_open_session returned: %d\n", mcRet);
return -1;
}
m4u_err("tz_m4u: open DCI session returned: %d\n", mcRet);
#endif
{
int i, j;
for (i = 0; i < 10000000; i++)
j++;
}
m4u_sec_set_context();
if (!m4u_tee_en) {
ret = m4u_sec_context_init();
if (ret)
return ret;
m4u_tee_en = 1;
} else
m4u_err("%s: secure m4u had inited:%d\n",
__func__, m4u_tee_en);
ret = __m4u_sec_init();
if (ret < 0) {
m4u_sec_context_deinit();
m4u_err("deinit sec context %d\n", ret);
m4u_tee_en = 0;
return ret;
}
/* don't deinit ta because of multiple init operation */
m4u_err("%s:normal init done\n", __func__);
return 0;
}
/* native */
int m4u_config_port_tee(struct m4u_port_config_struct *pM4uPort)
{
int ret;
struct m4u_sec_context *ctx;
ctx = m4u_sec_ctx_get(CMD_M4U_CFG_PORT);
if (!ctx)
return -EFAULT;
ctx->m4u_msg->cmd = CMD_M4U_CFG_PORT;
ctx->m4u_msg->port_param.port = pM4uPort->ePortID;
ctx->m4u_msg->port_param.virt = pM4uPort->Virtuality;
ctx->m4u_msg->port_param.direction = pM4uPort->Direction;
ctx->m4u_msg->port_param.distance = pM4uPort->Distance;
ctx->m4u_msg->port_param.sec = 0;
ret = m4u_exec_cmd(ctx);
if (ret) {
m4u_err("m4u exec command fail\n");
ret = -1;
goto out;
}
ret = ctx->m4u_msg->rsp;
out:
m4u_sec_ctx_put(ctx);
return ret;
}
int m4u_config_port_array_tee(unsigned char *port_array) /* native */
{
int ret;
struct m4u_sec_context *ctx;
ctx = m4u_sec_ctx_get(CMD_M4U_CFG_PORT_ARRAY);
if (!ctx)
return -EFAULT;
memset(ctx->m4u_msg, 0, sizeof(*ctx->m4u_msg));
memcpy(ctx->m4u_msg->port_array_param.m4u_port_array, port_array,
sizeof(ctx->m4u_msg->port_array_param.m4u_port_array));
ctx->m4u_msg->cmd = CMD_M4U_CFG_PORT_ARRAY;
ret = m4u_exec_cmd(ctx);
if (ret) {
m4u_err("m4u exec command fail\n");
ret = -1;
goto out;
}
ret = ctx->m4u_msg->rsp;
out:
m4u_sec_ctx_put(ctx);
return ret;
}
/*#ifdef TO_BE_IMPL*/
int m4u_larb_backup_sec(unsigned int larb_idx)
{
int ret;
struct m4u_sec_context *ctx;
ctx = m4u_sec_ctx_get(CMD_M4U_LARB_BACKUP);
if (!ctx)
return -EFAULT;
ctx->m4u_msg->cmd = CMD_M4U_LARB_BACKUP;
ctx->m4u_msg->larb_param.larb_idx = larb_idx;
ret = m4u_exec_cmd(ctx);
if (ret) {
m4u_err("m4u exec command fail\n");
ret = -1;
goto out;
}
ret = ctx->m4u_msg->rsp;
out:
m4u_sec_ctx_put(ctx);
return ret;
}
int m4u_larb_restore_sec(unsigned int larb_idx)
{
int ret;
struct m4u_sec_context *ctx;
ctx = m4u_sec_ctx_get(CMD_M4U_LARB_RESTORE);
if (!ctx)
return -EFAULT;
ctx->m4u_msg->cmd = CMD_M4U_LARB_RESTORE;
ctx->m4u_msg->larb_param.larb_idx = larb_idx;
ret = m4u_exec_cmd(ctx);
if (ret) {
m4u_err("m4u exec command fail\n");
ret = -1;
goto out;
}
ret = ctx->m4u_msg->rsp;
out:
m4u_sec_ctx_put(ctx);
return ret;
}
static int m4u_reg_backup_sec(void)
{
int ret;
struct m4u_sec_context *ctx;
ctx = m4u_sec_ctx_get(CMD_M4U_REG_BACKUP);
if (!ctx)
return -EFAULT;
ctx->m4u_msg->cmd = CMD_M4U_REG_BACKUP;
ret = m4u_exec_cmd(ctx);
if (ret) {
m4u_err("m4u exec command fail\n");
ret = -1;
goto out;
}
ret = ctx->m4u_msg->rsp;
out:
m4u_sec_ctx_put(ctx);
return ret;
}
static int m4u_reg_restore_sec(void)
{
int ret;
struct m4u_sec_context *ctx;
ctx = m4u_sec_ctx_get(CMD_M4U_REG_RESTORE);
if (!ctx)
return -EFAULT;
ctx->m4u_msg->cmd = CMD_M4U_REG_RESTORE;
ret = m4u_exec_cmd(ctx);
if (ret) {
m4u_err("m4u exec command fail\n");
ret = -1;
goto out;
}
ret = ctx->m4u_msg->rsp;
out:
m4u_sec_ctx_put(ctx);
return ret;
}
static void m4u_early_suspend(void)
{
#ifdef NEED_M4U_SEC_SUSPEND_AND_RESUME
// move these actions into m4u_suspend and m4u_restore.
m4u_err("%s +, %d\n", __func__, m4u_tee_en);
if (m4u_tee_en)
m4u_reg_backup_sec();
m4u_err("%s -\n", __func__);
#endif
}
static void m4u_late_resume(void)
{
#ifdef NEED_M4U_SEC_SUSPEND_AND_RESUME
// move these actions into m4u_suspend and m4u_restore.
m4u_err("%s +, %d\n", __func__, m4u_tee_en);
if (m4u_tee_en)
m4u_reg_restore_sec();
m4u_err("%s -\n", __func__);
#endif
}
static struct notifier_block m4u_fb_notifier;
static int m4u_fb_notifier_callback(struct notifier_block *self,
unsigned long event, void *data)
{
struct fb_event *evdata = data;
int blank;
m4u_err("%s %ld, %d\n", __func__, event,
FB_EVENT_BLANK);
if (event != FB_EVENT_BLANK)
return 0;
blank = *(int *)evdata->data;
switch (blank) {
case FB_BLANK_UNBLANK:
case FB_BLANK_NORMAL:
m4u_late_resume();
break;
case FB_BLANK_VSYNC_SUSPEND:
case FB_BLANK_HSYNC_SUSPEND:
break;
case FB_BLANK_POWERDOWN:
m4u_early_suspend();
break;
default:
return -EINVAL;
}
return 0;
}
int m4u_map_nonsec_buf(int port, unsigned int mva,
unsigned int size)
{
int ret;
struct m4u_sec_context *ctx;
ctx = m4u_sec_ctx_get(CMD_M4U_MAP_NONSEC_BUFFER);
if (!ctx)
return -EFAULT;
ctx->m4u_msg->cmd = CMD_M4U_MAP_NONSEC_BUFFER;
ctx->m4u_msg->buf_param.mva = mva;
ctx->m4u_msg->buf_param.size = size;
ctx->m4u_msg->buf_param.port = port;
ret = m4u_exec_cmd(ctx);
if (ret) {
m4u_err("m4u exec command fail\n");
ret = -1;
goto out;
}
ret = ctx->m4u_msg->rsp;
out:
m4u_sec_ctx_put(ctx);
return ret;
}
static int m4u_unmap_nonsec_buffer(unsigned int mva, unsigned int size)
{
int ret;
struct m4u_sec_context *ctx;
ctx = m4u_sec_ctx_get(CMD_M4U_UNMAP_NONSEC_BUFFER);
if (!ctx)
return -EFAULT;
ctx->m4u_msg->cmd = CMD_M4U_UNMAP_NONSEC_BUFFER;
ctx->m4u_msg->buf_param.mva = mva;
ctx->m4u_msg->buf_param.size = size;
ret = m4u_exec_cmd(ctx);
if (ret) {
m4u_err("m4u exec command fail\n");
ret = -1;
goto out;
}
ret = ctx->m4u_msg->rsp;
out:
m4u_sec_ctx_put(ctx);
return ret;
}
#endif
int m4u_gz_sec_init(int mtk_iommu_sec_id)
{
m4u_info("%s : do nothing!!\n", __func__);
return 0;
}
#ifdef M4U_GZ_SERVICE_ENABLE
int m4u_map_gz_nonsec_buf(int iommu_sec_id, int port, unsigned long mva,
unsigned long size)
{
m4u_info("%s : do nothing!!\n", __func__);
return 0;
}
int m4u_unmap_gz_nonsec_buffer(int iommu_sec_id, unsigned long mva,
unsigned long size)
{
m4u_info("%s : do nothing!!\n", __func__);
return 0;
}
#endif
static long MTK_M4U_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg)
{
int ret = 0;
struct M4U_MOUDLE m4u_module;
#ifdef M4U_FPGAPORTING
struct m4u_port_config_struct m4u_port;
#endif
M4U_PORT_ID ModuleID;
/* struct M4U_CACHE m4u_cache_data;
* struct M4U_DMA m4u_dma_data;
* struct m4u_client_t *client = filp->private_data;
*/
switch (cmd) {
case MTK_M4U_T_POWER_ON:
ret = copy_from_user(&ModuleID, (void *)arg,
sizeof(unsigned int));
if (ret) {
m4u_err(
"MTK_M4U_T_POWER_ON,copy_from_user failed,%d\n",
ret);
return -EFAULT;
}
if (ModuleID < 0 || ModuleID >= M4U_PORT_UNKNOWN) {
m4u_err("MTK_M4U_T_POWER_ON, moduleid%d is invalid\n",
ModuleID);
return -EFAULT;
}
ret = m4u_power_on(ModuleID);
break;
case MTK_M4U_T_POWER_OFF:
ret = copy_from_user(&ModuleID, (void *)arg,
sizeof(unsigned int));
if (ret) {
m4u_err("MTK_M4U_T_POWER_OFF,copy_from_user failed,%d\n",
ret);
return -EFAULT;
}
if (ModuleID < 0 || ModuleID >= M4U_PORT_UNKNOWN) {
m4u_err("MTK_M4U_T_POWER_Off, moduleid%d is invalid\n",
ModuleID);
return -EFAULT;
}
ret = m4u_power_off(ModuleID);
break;
case MTK_M4U_T_ALLOC_MVA:
ret = copy_from_user(&m4u_module, (void *)arg,
sizeof(struct M4U_MOUDLE));
if (ret) {
m4u_err("MTK_M4U_T_ALLOC_MVA,copy_from_user failed:%d\n",
ret);
return -EFAULT;
}
if (m4u_module.port < 0
|| m4u_module.port >= M4U_PORT_UNKNOWN) {
m4u_err("MTK_M4U_T_ALLOC_MVA, port%d is invalid\n",
m4u_module.port);
return -EFAULT;
}
m4u_err("alloc mva by ioctl is not support\n");
/*
* ret = m4u_alloc_mva(client, m4u_module.port, m4u_module.BufAddr,
* NULL,
* m4u_module.BufSize, m4u_module.prot,
* m4u_module.flags, &(m4u_module.MVAStart));
*
* if (ret)
* return ret;
*/
ret = copy_to_user(&(((struct M4U_MOUDLE *) arg)->MVAStart),
&(m4u_module.MVAStart), sizeof(unsigned int));
if (ret) {
m4u_err("MTK_M4U_T_ALLOC_MVA,copy_from_user failed:%d\n",
ret);
return -EFAULT;
}
break;
case MTK_M4U_T_DEALLOC_MVA: {
ret = copy_from_user(&m4u_module, (void *)arg,
sizeof(struct M4U_MOUDLE));
if (ret) {
m4u_err(
"MTK_M4U_T_DEALLOC_MVA,copy_from_user failed:%d\n",
ret);
return -EFAULT;
}
if (m4u_module.port < 0
|| m4u_module.port >= M4U_PORT_UNKNOWN) {
m4u_err("MTK_M4U_T_DEALLOC_MVA, port%d is invalid\n",
m4u_module.port);
return -EFAULT;
}
m4u_err("dealloc mva by ioctl is not support\n");
/*
* ret = m4u_dealloc_mva(client, m4u_module.port,
* m4u_module.MVAStart);
* if (ret)
* return ret;
*/
}
break;
case MTK_M4U_T_DUMP_INFO:
ret = copy_from_user(&ModuleID, (void *)arg,
sizeof(unsigned int));
if (ret) {
m4u_err(
"MTK_M4U_Invalid_TLB_Range,copy_from_user failed,%d\n",
ret);
return -EFAULT;
}
if (ModuleID < 0 || ModuleID >= M4U_PORT_UNKNOWN) {
m4u_err("MTK_M4U_Invalid_TLB_Range, port%d is invalid\n",
ModuleID);
return -EFAULT;
}
break;
#ifdef M4U_FPGAPORTING
case MTK_M4U_T_CONFIG_PORT:
ret = copy_from_user(&m4u_port, (void *)arg,
sizeof(struct m4u_port_config_struct));
if (ret) {
m4u_err("MTK_M4U_T_CONFIG_PORT,copy_from_user failed:%d\n",
ret);
return -EFAULT;
}
if (m4u_port.ePortID < 0 ||
m4u_port.ePortID >= M4U_PORT_UNKNOWN) {
m4u_err("MTK_M4U_T_CONFIG_PORT, port%d is invalid\n",
m4u_port.ePortID);
return -EFAULT;
}
#ifdef M4U_TEE_SERVICE_ENABLE
mutex_lock(&gM4u_sec_init);
ret = m4u_config_port(&m4u_port);
mutex_unlock(&gM4u_sec_init);
#else
ret = m4u_config_port(&m4u_port);
#endif
break;
#endif
case MTK_M4U_T_CACHE_FLUSH_ALL:
m4u_err("m4u cache sync by ioctl is not support\n");
/* m4u_dma_cache_flush_all(); */
break;
case MTK_M4U_T_CONFIG_PORT_ARRAY: {
struct m4u_port_array port_array;
ret = copy_from_user(&port_array, (void *)arg,
sizeof(struct m4u_port_array));
if (ret) {
m4u_err(
"MTK_M4U_T_CONFIG_PORT,copy_from_user failed:%d\n",
ret);
return -EFAULT;
}
#ifdef M4U_TEE_SERVICE_ENABLE
mutex_lock(&gM4u_sec_init);
#endif
m4u_err("config port_array by ioctl is not support\n");
/* ret = m4u_config_port_array(&port_array); */
#ifdef M4U_TEE_SERVICE_ENABLE
mutex_unlock(&gM4u_sec_init);
#endif
}
break;
case MTK_M4U_T_CONFIG_TF: {
struct M4U_TF rM4UTF;
ret = copy_from_user(&rM4UTF, (void *)arg,
sizeof(struct M4U_TF));
if (ret) {
m4u_err(
"MTK_M4U_T_CONFIG_TF,copy_from_user failed:%d\n",
ret);
return -EFAULT;
}
if (rM4UTF.port < 0 || rM4UTF.port >= M4U_PORT_UNKNOWN) {
m4u_err("MTK_M4U_T_CONFIG_TF, port%d is invalid\n",
rM4UTF.port);
return -EFAULT;
}
ret = m4u_enable_tf(rM4UTF.port, rM4UTF.fgEnable);
}
break;
#ifdef M4U_TEE_SERVICE_ENABLE
case MTK_M4U_T_SEC_INIT: {
m4u_err("MTK M4U ioctl : MTK_M4U_T_SEC_INIT command!! 0x%x\n",
cmd);
mutex_lock(&gM4u_sec_init);
ret = m4u_sec_init();
mutex_unlock(&gM4u_sec_init);
}
break;
#endif
#ifdef M4U_GZ_SERVICE_ENABLE
case MTK_M4U_GZ_SEC_INIT: {
m4u_info("%s : MTK_M4U_GZ_SEC_INIT command do nothing!! 0x%x\n",
__func__, cmd);
}
break;
#endif
default:
/* m4u_err("MTK M4U ioctl:No such command!!\n"); */
ret = -EINVAL;
break;
}
return ret;
}
#if IS_ENABLED(CONFIG_COMPAT)
struct compat_m4u_module_t {
compat_uint_t port;
compat_ulong_t BufAddr;
compat_uint_t BufSize;
compat_uint_t prot;
compat_uint_t MVAStart;
compat_uint_t MVAEnd;
compat_uint_t flags;
};
struct compat_m4u_cache_t {
compat_uint_t port;
compat_uint_t eCacheSync;
compat_ulong_t va;
compat_uint_t size;
compat_uint_t mva;
};
struct compat_m4u_dma_t {
compat_uint_t port;
compat_uint_t eDMAType;
compat_uint_t eDMADir;
compat_ulong_t va;
compat_uint_t size;
compat_uint_t mva;
};
#define COMPAT_MTK_M4U_T_ALLOC_MVA _IOWR(MTK_M4U_MAGICNO, 4, int)
#define COMPAT_MTK_M4U_T_DEALLOC_MVA _IOW(MTK_M4U_MAGICNO, 5, int)
#define COMPAT_MTK_M4U_T_CACHE_SYNC _IOW(MTK_M4U_MAGICNO, 10, int)
#define COMPAT_MTK_M4U_T_DMA_OP _IOW(MTK_M4U_MAGICNO, 29, int)
static int compat_get_m4u_module_struct(struct compat_m4u_module_t
__user *data32,
struct M4U_MOUDLE __user *data)
{
compat_uint_t u;
compat_ulong_t l;
int err;
err = get_user(u, &(data32->port));
err |= put_user(u, &(data->port));
err |= get_user(l, &(data32->BufAddr));
err |= put_user(l, &(data->BufAddr));
err |= get_user(u, &(data32->BufSize));
err |= put_user(u, &(data->BufSize));
err |= get_user(u, &(data32->prot));
err |= put_user(u, &(data->prot));
err |= get_user(u, &(data32->MVAStart));
err |= put_user(u, &(data->MVAStart));
err |= get_user(u, &(data32->MVAEnd));
err |= put_user(u, &(data->MVAEnd));
err |= get_user(u, &(data32->flags));
err |= put_user(u, &(data->flags));
return err;
}
static int compat_put_m4u_module_struct(struct compat_m4u_module_t
__user *data32,
struct M4U_MOUDLE __user *data)
{
compat_uint_t u;
compat_ulong_t l;
int err;
err = get_user(u, &(data->port));
err |= put_user(u, &(data32->port));
err |= get_user(l, &(data->BufAddr));
err |= put_user(l, &(data32->BufAddr));
err |= get_user(u, &(data->BufSize));
err |= put_user(u, &(data32->BufSize));
err |= get_user(u, &(data->prot));
err |= put_user(u, &(data32->prot));
err |= get_user(u, &(data->MVAStart));
err |= put_user(u, &(data32->MVAStart));
err |= get_user(u, &(data->MVAEnd));
err |= put_user(u, &(data32->MVAEnd));
err |= get_user(u, &(data->flags));
err |= put_user(u, &(data32->flags));
return err;
}
static int
compat_get_m4u_cache_struct
(struct compat_m4u_cache_t __user *data32,
struct M4U_CACHE __user *data)
{
compat_uint_t u;
compat_ulong_t l;
int err;
err = get_user(u, &(data32->port));
err |= put_user(u, &(data->port));
err |= get_user(u, &(data32->eCacheSync));
err |= put_user(u, &(data->eCacheSync));
err |= get_user(l, &(data32->va));
err |= put_user(l, &(data->va));
err |= get_user(u, &(data32->size));
err |= put_user(u, &(data->size));
err |= get_user(u, &(data32->mva));
err |= put_user(u, &(data->mva));
return err;
}
static int
compat_get_m4u_dma_struct
(struct compat_m4u_dma_t __user *data32,
struct M4U_DMA __user *data)
{
compat_uint_t u;
compat_ulong_t l;
int err;
err = get_user(u, &(data32->port));
err |= put_user(u, &(data->port));
err |= get_user(u, &(data32->eDMAType));
err |= put_user(u, &(data->eDMAType));
err |= get_user(u, &(data32->eDMADir));
err |= put_user(u, &(data->eDMADir));
err |= get_user(l, &(data32->va));
err |= put_user(l, &(data->va));
err |= get_user(u, &(data32->size));
err |= put_user(u, &(data->size));
err |= get_user(u, &(data32->mva));
err |= put_user(u, &(data->mva));
return err;
}
long MTK_M4U_COMPAT_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg)
{
long ret;
if (!filp->f_op || !filp->f_op->unlocked_ioctl)
return -ENOTTY;
switch (cmd) {
case COMPAT_MTK_M4U_T_ALLOC_MVA: {
struct compat_m4u_module_t __user *data32;
struct M4U_MOUDLE __user *data;
int err;
data32 = compat_ptr(arg);
data = compat_alloc_user_space(sizeof(struct M4U_MOUDLE));
if (data == NULL)
return -EFAULT;
err = compat_get_m4u_module_struct(data32, data);
if (err)
return err;
ret = filp->f_op->unlocked_ioctl(filp, MTK_M4U_T_ALLOC_MVA,
(unsigned long)data);
err = compat_put_m4u_module_struct(data32, data);
if (err)
return err;
return ret;
}
case COMPAT_MTK_M4U_T_DEALLOC_MVA: {
struct compat_m4u_module_t __user *data32;
struct M4U_MOUDLE __user *data;
int err;
data32 = compat_ptr(arg);
data = compat_alloc_user_space(sizeof(struct M4U_MOUDLE));
if (data == NULL)
return -EFAULT;
err = compat_get_m4u_module_struct(data32, data);
if (err)
return err;
return filp->f_op->unlocked_ioctl(filp, MTK_M4U_T_DEALLOC_MVA,
(unsigned long)data);
}
case COMPAT_MTK_M4U_T_CACHE_SYNC: {
struct compat_m4u_cache_t __user *data32;
struct M4U_CACHE __user *data;
int err;
data32 = compat_ptr(arg);
data = compat_alloc_user_space(sizeof(struct M4U_CACHE));
if (data == NULL)
return -EFAULT;
err = compat_get_m4u_cache_struct(data32, data);
if (err)
return err;
return filp->f_op->unlocked_ioctl(filp, MTK_M4U_T_CACHE_SYNC,
(unsigned long)data);
}
case COMPAT_MTK_M4U_T_DMA_OP: {
struct compat_m4u_dma_t __user *data32;
struct M4U_DMA __user *data;
int err;
data32 = compat_ptr(arg);
data = compat_alloc_user_space(sizeof(struct M4U_DMA));
if (data == NULL)
return -EFAULT;
err = compat_get_m4u_dma_struct(data32, data);
if (err)
return err;
return filp->f_op->unlocked_ioctl(filp, MTK_M4U_T_DMA_OP,
(unsigned long)data);
}
case MTK_M4U_T_POWER_ON:
case MTK_M4U_T_POWER_OFF:
case MTK_M4U_T_DUMP_INFO:
case MTK_M4U_T_CONFIG_PORT:
case MTK_M4U_T_MONITOR_START:
case MTK_M4U_T_MONITOR_STOP:
case MTK_M4U_T_CACHE_FLUSH_ALL:
case MTK_M4U_T_CONFIG_PORT_ARRAY:
case MTK_M4U_T_SEC_INIT:
return filp->f_op->unlocked_ioctl(filp, cmd,
(unsigned long)compat_ptr(arg));
#ifdef M4U_GZ_SERVICE_ENABLE
case MTK_M4U_GZ_SEC_INIT:
return filp->f_op->unlocked_ioctl(filp, cmd,
(unsigned long)compat_ptr(arg));
break;
#endif
default:
return -ENOIOCTLCMD;
}
}
#else
#define MTK_M4U_COMPAT_ioctl NULL
#endif
static const struct file_operations m4u_fops = {
.owner = THIS_MODULE,
.open = MTK_M4U_open,
.release = MTK_M4U_release,
.flush = MTK_M4U_flush,
.unlocked_ioctl = MTK_M4U_ioctl,
.compat_ioctl = MTK_M4U_COMPAT_ioctl,
/* .mmap = NULL; */
};
static int m4u_probe(struct platform_device *pdev)
{
struct device_node *node = pdev->dev.of_node;
m4u_info("%s 0\n", __func__);
#if defined(CONFIG_MACH_MT6765) || defined(CONFIG_MACH_MT6761)
#if defined(CONFIG_MTK_SMI_EXT)
m4u_err("%s: %d\n", __func__, smi_mm_first_get());
if (!smi_mm_first_get()) {
m4u_err("SMI not start probe\n");
return -EPROBE_DEFER;
}
#endif
#endif
if (pdev->dev.of_node) {
int err;
err = of_property_read_u32(node, "cell-index", &pdev->id);
if (err)
m4u_err("[DTS] get m4u platform_device id fail!!\n");
}
m4u_info("%s 1, pdev id = %d name = %s\n", __func__, pdev->id,
pdev->name);
gM4uDev->pDev[pdev->id] = &pdev->dev;
gM4uDev->m4u_base[pdev->id] = (unsigned long)of_iomap(node, 0);
gM4uDev->irq_num[pdev->id] = irq_of_parse_and_map(node, 0);
m4u_err("%s 2, of_iomap: 0x%lx, irq_num: %d, pDev: %p\n", __func__,
gM4uDev->m4u_base[pdev->id], gM4uDev->irq_num[pdev->id],
gM4uDev->pDev[pdev->id]);
if (pdev->id == 0) {
m4u_domain_init(gM4uDev, &gMvaNode_unknown);
#ifdef M4U_TEE_SERVICE_ENABLE
{
struct m4u_buf_info *pMvaInfo;
unsigned int mva;
pMvaInfo = m4u_alloc_buf_info();
if (pMvaInfo != NULL) {
pMvaInfo->port = M4U_PORT_UNKNOWN;
pMvaInfo->size
= M4U_NONSEC_MVA_START - 0x100000;
}
mva = m4u_do_mva_alloc(0,
M4U_NONSEC_MVA_START - 0x100000,
pMvaInfo);
pMvaInfo->mva = mva;
m4u_info("reserve sec mva: 0x%x\n", mva);
}
#endif
}
m4u_hw_init(gM4uDev, pdev->id);
m4u_info("%s 3 finish...\n", __func__);
return 0;
}
static int m4u_remove(struct platform_device *pdev)
{
m4u_hw_deinit(gM4uDev, pdev->id);
#ifndef __M4U_USE_PROC_NODE
misc_deregister(&(gM4uDev->dev));
#else
if (gM4uDev->m4u_dev_proc_entry)
proc_remove(gM4uDev->m4u_dev_proc_entry);
#endif
return 0;
}
static int m4u_suspend(struct platform_device *pdev,
pm_message_t mesg)
{
#ifdef M4U_TEE_SERVICE_ENABLE
int i = 0;
m4u_info("%s, m4u_reg_backup_sec +, %d\n", __func__, m4u_tee_en);
//smi_debug_bus_hang_detect(false, M4U_DEV_NAME);
if (m4u_tee_en) {
for (i = 0; i < SMI_LARB_NR; i++)
larb_clock_on(i, 1);
m4u_reg_backup_sec();
for (i = 0; i < SMI_LARB_NR; i++)
larb_clock_off(i, 1);
}
m4u_info("%s, m4u_reg_backup_sec -\n", __func__);
#endif
m4u_reg_backup();
m4u_info("M4U backup in suspend\n");
return 0;
}
static int m4u_resume(struct platform_device *pdev)
{
#ifdef M4U_TEE_SERVICE_ENABLE
int i = 0;
m4u_info("%s, m4u_reg_restore_sec +, %d\n", __func__, m4u_tee_en);
//smi_debug_bus_hang_detect(false, M4U_DEV_NAME);
if (m4u_tee_en) {
for (i = 0; i < SMI_LARB_NR; i++)
larb_clock_on(i, 1);
m4u_reg_restore_sec();
for (i = 0; i < SMI_LARB_NR; i++)
larb_clock_off(i, 1);
}
m4u_info("%s, m4u_reg_restore_sec -\n", __func__);
#endif
m4u_reg_restore();
m4u_info("M4U restore in resume\n");
return 0;
}
/*---------------------------------------------------------------------------*/
#ifdef CONFIG_PM
/*---------------------------------------------------------------------------*/
static int m4u_pm_suspend(struct device *device)
{
struct platform_device *pdev = to_platform_device(device);
if (pdev == NULL)
m4u_err("pdev is NULL!\n");
return m4u_suspend(pdev, PMSG_SUSPEND);
}
static int m4u_pm_resume(struct device *device)
{
struct platform_device *pdev = to_platform_device(device);
if (pdev == NULL)
m4u_err("pdev is NULL!\n");
return m4u_resume(pdev);
}
static int m4u_pm_restore_noirq(struct device *device)
{
int i;
for (i = 0; i < TOTAL_M4U_NUM; i++)
irq_set_irq_type(gM4uDev->irq_num[i], IRQF_TRIGGER_LOW);
return 0;
}
/*---------------------------------------------------------------------------*/
#else /*CONFIG_PM */
/*---------------------------------------------------------------------------*/
#define m4u_pm_suspend NULL
#define m4u_pm_resume NULL
#define m4u_pm_restore_noirq NULL
/*---------------------------------------------------------------------------*/
#endif /*CONFIG_PM */
/*---------------------------------------------------------------------------*/
static const struct of_device_id iommu_of_ids[] = {
{.compatible = "mediatek,m4u",},
{.compatible = "mediatek,iommu_v0",},
{.compatible = "mediatek,perisys_iommu",},
{}
};
const struct dev_pm_ops m4u_pm_ops = {
.suspend = m4u_pm_suspend,
.resume = m4u_pm_resume,
.freeze = m4u_pm_suspend,
.thaw = m4u_pm_resume,
.poweroff = m4u_pm_suspend,
.restore = m4u_pm_resume,
.restore_noirq = m4u_pm_restore_noirq,
};
static struct platform_driver m4uDrv = {
.probe = m4u_probe,
.remove = m4u_remove,
.suspend = m4u_suspend,
.resume = m4u_resume,
.driver = {
.name = "m4u",
.of_match_table = iommu_of_ids,
#ifdef CONFIG_PM
.pm = &m4u_pm_ops,
#endif
.owner = THIS_MODULE,
}
};
/*
*static u64 m4u_dmamask = ~(u32) 0;
*
*static struct platform_device mtk_m4u_dev = {
* .name = M4U_DEV_NAME,
* .id = 0,
* .dev = {
* .dma_mask = &m4u_dmamask,
* .coherent_dma_mask = 0xffffffffUL
* }
*};
*/
#define __M4U_USE_PROC_NODE
static int __init MTK_M4U_Init(void)
{
int ret = 0;
gM4uDev = kzalloc(sizeof(struct m4u_device), GFP_KERNEL);
m4u_info("%s kzalloc: %p\n", __func__, gM4uDev);
if (!gM4uDev) {
m4u_err("kmalloc for m4u_device fail\n");
return -ENOMEM;
}
#ifndef __M4U_USE_PROC_NODE
gM4uDev->dev.minor = MISC_DYNAMIC_MINOR;
gM4uDev->dev.name = M4U_DEV_NAME;
gM4uDev->dev.fops = &m4u_fops;
gM4uDev->dev.parent = NULL;
ret = misc_register(&(gM4uDev->dev));
m4u_info("misc_register, minor: %d\n", gM4uDev->dev.minor);
if (ret) {
m4u_err("failed to register misc device.\n");
return ret;
}
#else
gM4uDev->m4u_dev_proc_entry = proc_create("m4u", 0, NULL,
&m4u_fops);
if (!(gM4uDev->m4u_dev_proc_entry)) {
m4u_err("m4u:failed to register m4u in proc/m4u_device.\n");
return ret;
}
#endif
m4u_debug_init(gM4uDev);
m4u_info("M4U platform_driver_register start\n");
if (platform_driver_register(&m4uDrv)) {
m4u_err("failed to register M4U driver");
return -ENODEV;
}
m4u_info("M4U platform_driver_register finsish\n");
/*
* retval = platform_device_register(&mtk_m4u_dev);
* if (retval != 0)
* return retval;
*/
#ifdef M4U_PROFILE
m4u_profile_init();
#endif
#ifdef M4U_TEE_SERVICE_ENABLE
m4u_fb_notifier.notifier_call = m4u_fb_notifier_callback;
ret = fb_register_client(&m4u_fb_notifier);
if (ret)
m4u_err("m4u register fb_notifier failed! ret(%d)\n", ret);
else
m4u_err("m4u register fb_notifier OK!\n");
#endif
return 0;
}
// #if !(defined(CONFIG_MACH_MT6765) || defined(CONFIG_MACH_MT6761))
static int __init mtk_m4u_late_init(void)
{
return 0;
}
// #endif
static void __exit MTK_M4U_Exit(void)
{
platform_driver_unregister(&m4uDrv);
}
// #if !(defined(CONFIG_MACH_MT6765) || defined(CONFIG_MACH_MT6761))
subsys_initcall(MTK_M4U_Init);
late_initcall(mtk_m4u_late_init);
// #else
// module_init(MTK_M4U_Init);
// #endif
module_exit(MTK_M4U_Exit);
MODULE_DESCRIPTION("MTKM4Udriver");
MODULE_AUTHOR("MTK80347 <Xiang.Xu@mediatek.com>");
MODULE_LICENSE("GPL");
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