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Commit 5cacee52 authored by Alan Cox's avatar Alan Cox Committed by Greg Kroah-Hartman
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atomisp: trim unused mmgr code 

This cuts it back to what is basically a few wrapper functions. At some point
we can kill most of these too by changing the callers.
Signed-off-by: default avatarAlan Cox <alan@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f6a681e0
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Showing with 14 additions and 333 deletions
drivers/staging/media/atomisp/pci/atomisp2/css2400/hive_isp_css_include/memory_access/memory_access.h
View file @ 5cacee52
......@@ -99,35 +99,6 @@ extern const hrt_vaddress mmgr_EXCEPTION;
extern void mmgr_set_base_address(
const sys_address base_addr);
/*! Get the (sub)system virtual memory page table base address
\return base_address,
*/
/* unused */
extern sys_address mmgr_get_base_address(void);
/*! Set the (sub)system virtual memory page table base index
\param base_addr[in] The index where page table 0 is located
\Note: The base_index is the MSB section of an absolute system address,
the in-page address bits are discared. The base address is not
relative to the DDR base address
\return none,
*/
/* unused */
extern void mmgr_set_base_index(
const hrt_data base_index);
/*! Get the (sub)system virtual memory page table base index
\return base_address,
*/
/* unused */
extern hrt_data mmgr_get_base_index(void);
/*! Return the address of an allocation in memory
\param size[in] Size in bytes of the allocation
......@@ -158,22 +129,6 @@ extern hrt_vaddress mmgr_calloc_ex(
const char *caller_func,
int caller_line);
/*! Return the address of a reallocated allocation in memory
\param vaddr[in] Address of an allocation
\param size[in] Size in bytes of the allocation
\Note
All limitations and particularities of the C stdlib
realloc function apply
\return vaddress
*/
/* unused */
extern hrt_vaddress mmgr_realloc(
hrt_vaddress vaddr,
const size_t size);
/*! Free the memory allocation identified by the address
\param vaddr[in] Address of the allocation
......@@ -205,26 +160,6 @@ extern hrt_vaddress mmgr_alloc_attr_ex(
const char *caller_func,
int caller_line);
/*! Return the address of a reallocated allocation in memory
\param vaddr[in] Address of an allocation
\param size[in] Size in bytes of the allocation
\param attribute[in] Bit vector specifying the properties
of the allocation
#endif
\Note
All limitations and particularities of the C stdlib
realloc function apply
\return vaddress
*/
/* unused */
extern hrt_vaddress mmgr_realloc_attr(
hrt_vaddress vaddr,
const size_t size,
const uint16_t attribute);
/*! Return the address of a mapped existing allocation in memory
\param ptr[in] Pointer to an allocation in a different
......@@ -264,20 +199,6 @@ extern void mmgr_clear_ex(
const char *caller_func,
int caller_line);
/*! Set an allocation in memory to a value
\param vaddr[in] Address of an allocation
\param data[in] Value to set
\param size[in] Size in bytes of the area to be set
\return none
*/
/* unused */
extern void mmgr_set(
hrt_vaddress vaddr,
const uint8_t data,
const size_t size);
/*! Read an array of bytes from a virtual memory address
\param vaddr[in] Address of an allocation
......
drivers/staging/media/atomisp/pci/atomisp2/hrt/memory_access.c
View file @ 5cacee52
......@@ -22,235 +22,44 @@
static sys_address page_table_base_address = (sys_address)-1;
#ifndef SH_CSS_MEMORY_GUARDING
/* Choose default in case not defined */
#ifdef HRT_CSIM
#define SH_CSS_MEMORY_GUARDING (1)
#else
#define SH_CSS_MEMORY_GUARDING (0)
#endif
#endif
#if SH_CSS_MEMORY_GUARDING
#define CEIL_DIV(a, b) ((b) ? ((a)+(b)-1)/(b) : 0)
#define CEIL_MUL(a, b) (CEIL_DIV(a, b) * (b))
#define DDR_ALIGN(a) (CEIL_MUL((a), (HIVE_ISP_DDR_WORD_BYTES)))
#define MEM_GUARD_START 0xABBAABBA
#define MEM_GUARD_END 0xBEEFBEEF
#define GUARD_SIZE sizeof(unsigned long)
#define GUARD_SIZE_ALIGNED DDR_ALIGN(GUARD_SIZE)
#define MAX_ALLOC_ENTRIES (256)
#define INVALID_VBASE ((ia_css_ptr)-1)
#define INVALID_SIZE ((unsigned long)-1)
struct alloc_info {
ia_css_ptr vbase;
unsigned long size;
};
static struct alloc_info alloc_admin[MAX_ALLOC_ENTRIES];
static struct alloc_info const alloc_info_invalid
= { INVALID_VBASE, INVALID_SIZE };
static void alloc_admin_init(void)
{
int i;
for (i = 0; i < MAX_ALLOC_ENTRIES; i++)
alloc_admin[i] = alloc_info_invalid;
}
static struct alloc_info const *alloc_admin_find(ia_css_ptr vaddr)
{
int i;
/**
* Note that we use <= instead of < because we like to accept
* zero-sized operations at the last allocated address
* e.g. mmgr_set(vbase+alloc_size, data, 0)
*/
for (i = 0; i < MAX_ALLOC_ENTRIES; i++) {
if (alloc_admin[i].vbase != INVALID_VBASE &&
vaddr >= alloc_admin[i].vbase &&
vaddr <= alloc_admin[i].vbase +
alloc_admin[i].size) {
return &alloc_admin[i];
}
}
return &alloc_info_invalid;
}
static bool mem_guard_valid(ia_css_ptr vaddr, unsigned long size)
{
unsigned long mem_guard;
struct alloc_info const *info;
info = alloc_admin_find(vaddr);
if (info->vbase == INVALID_VBASE) {
assert(false);
return false;
}
/* Check if end is in alloc range*/
if ((vaddr + size) > (info->vbase + info->size)) {
assert(false);
return false;
}
hrt_isp_css_mm_load((info->vbase - sizeof(mem_guard)),
&mem_guard, sizeof(mem_guard));
if (mem_guard != MEM_GUARD_START) {
assert(false);
return false;
}
hrt_isp_css_mm_load((info->vbase + info->size),
&mem_guard, sizeof(mem_guard));
if (mem_guard != MEM_GUARD_END) {
assert(false);
return false;
}
return true;
}
static void alloc_admin_add(ia_css_ptr vbase, unsigned long size)
{
int i;
unsigned long mem_guard;
assert(alloc_admin_find(vbase)->vbase == INVALID_VBASE);
mem_guard = MEM_GUARD_START;
hrt_isp_css_mm_store((vbase - sizeof(mem_guard)),
&mem_guard, sizeof(mem_guard));
mem_guard = MEM_GUARD_END;
hrt_isp_css_mm_store((vbase + size),
&mem_guard, sizeof(mem_guard));
for (i = 0; i < MAX_ALLOC_ENTRIES; i++) {
if (alloc_admin[i].vbase == INVALID_VBASE) {
alloc_admin[i].vbase = vbase;
alloc_admin[i].size = size;
return;
}
}
assert(false);
}
static void alloc_admin_remove(ia_css_ptr vbase)
{
int i;
assert(mem_guard_valid(vbase, 0));
for (i = 0; i < MAX_ALLOC_ENTRIES; i++) {
if (alloc_admin[i].vbase == vbase) {
alloc_admin[i] = alloc_info_invalid;
return;
}
}
assert(false);
}
#endif
void mmgr_set_base_address(
const sys_address base_addr)
void mmgr_set_base_address(const sys_address base_addr)
{
page_table_base_address = base_addr;
#if SH_CSS_MEMORY_GUARDING
alloc_admin_init();
#endif
/*
* This is part of "device_access.h", but it may be
* that "hive_isp_css_mm_hrt.h" requires it
*/
/* hrt_isp_css_mm_set_ddr_address_offset(offset); */
/* mmu_set_page_table_base_index(MMU0_ID, page_table_base_address); */
return;
}
sys_address mmgr_get_base_address(void)
ia_css_ptr mmgr_malloc(const size_t size)
{
return page_table_base_address;
return mmgr_alloc_attr(size, MMGR_ATTRIBUTE_CACHED);
}
void mmgr_set_base_index(
const hrt_data base_index)
ia_css_ptr mmgr_calloc(const size_t N, const size_t size)
{
/* This system only defines the MMU base address */
assert(0);
(void)base_index;
return;
return mmgr_alloc_attr(N * size,
MMGR_ATTRIBUTE_CLEARED|MMGR_ATTRIBUTE_CACHED);
}
hrt_data mmgr_get_base_index(void)
{
/* This system only defines the MMU base address */
assert(0);
return 0;
}
ia_css_ptr mmgr_malloc(
const size_t size)
{
return mmgr_alloc_attr(size, MMGR_ATTRIBUTE_CACHED);
}
ia_css_ptr mmgr_calloc(
const size_t N,
const size_t size)
{
return mmgr_alloc_attr(N * size, MMGR_ATTRIBUTE_CLEARED|MMGR_ATTRIBUTE_CACHED);
}
ia_css_ptr mmgr_realloc(
ia_css_ptr vaddr,
const size_t size)
{
return mmgr_realloc_attr(vaddr, size, MMGR_ATTRIBUTE_DEFAULT);
}
void mmgr_free(
ia_css_ptr vaddr)
void mmgr_free(ia_css_ptr vaddr)
{
/* "free()" should accept NULL, "hrt_isp_css_mm_free()" may not */
if (vaddr) {
#if SH_CSS_MEMORY_GUARDING
alloc_admin_remove(vaddr);
/* Reconstruct the "original" address used with the alloc */
vaddr -= GUARD_SIZE_ALIGNED;
#endif
if (vaddr)
hrt_isp_css_mm_free(vaddr);
}
return;
}
ia_css_ptr mmgr_alloc_attr(
const size_t size,
const uint16_t attribute)
ia_css_ptr mmgr_alloc_attr(const size_t size, const uint16_t attribute)
{
ia_css_ptr ptr;
size_t extra_space = 0;
size_t aligned_size = size;
assert(page_table_base_address != (sys_address)-1);
assert((attribute & MMGR_ATTRIBUTE_UNUSED) == 0);
#if SH_CSS_MEMORY_GUARDING
/* Add DDR aligned space for a guard at begin and end */
/* Begin guard must be DDR aligned, "end" guard not */
extra_space = GUARD_SIZE_ALIGNED + GUARD_SIZE;
/* SP DMA operates on multiple of 32 bytes, also with writes.
* To prevent that the guard is being overwritten by SP DMA,
* the "end" guard must start DDR aligned.
*/
aligned_size = DDR_ALIGN(aligned_size);
#endif
assert(page_table_base_address != (sys_address)-1);
assert((attribute & MMGR_ATTRIBUTE_UNUSED) == 0);
if (attribute & MMGR_ATTRIBUTE_CLEARED) {
if (attribute & MMGR_ATTRIBUTE_CACHED) {
......@@ -289,32 +98,9 @@ assert((attribute & MMGR_ATTRIBUTE_UNUSED) == 0);
/* } */
}
}
#if SH_CSS_MEMORY_GUARDING
/* ptr is the user pointer, so we need to skip the "begin" guard */
ptr += GUARD_SIZE_ALIGNED;
alloc_admin_add(ptr, aligned_size);
#endif
return ptr;
}
ia_css_ptr mmgr_realloc_attr(
ia_css_ptr vaddr,
const size_t size,
const uint16_t attribute)
{
assert(page_table_base_address != (sys_address)-1);
assert((attribute & MMGR_ATTRIBUTE_UNUSED) == 0);
/* assert(attribute == MMGR_ATTRIBUTE_DEFAULT); */
/* Apparently we don't have this one */
assert(0);
(void)vaddr;
(void)size;
(void)attribute;
return 0;
}
ia_css_ptr mmgr_mmap(const void *ptr, const size_t size, uint16_t attribute,
void *context)
{
......@@ -329,41 +115,15 @@ void mmgr_clear(
ia_css_ptr vaddr,
const size_t size)
{
mmgr_set(vaddr, (uint8_t)0, size);
hrt_isp_css_mm_set(vaddr, 0, size);
}
void mmgr_set(
ia_css_ptr vaddr,
const uint8_t data,
const size_t size)
void mmgr_load(const ia_css_ptr vaddr, void *data, const size_t size)
{
#if SH_CSS_MEMORY_GUARDING
assert(mem_guard_valid(vaddr, size));
#endif
hrt_isp_css_mm_set(vaddr, (int)data, size);
return;
}
void mmgr_load(
const ia_css_ptr vaddr,
void *data,
const size_t size)
{
#if SH_CSS_MEMORY_GUARDING
assert(mem_guard_valid(vaddr, size));
#endif
hrt_isp_css_mm_load(vaddr, data, size);
return;
}
void mmgr_store(
const ia_css_ptr vaddr,
const void *data,
const size_t size)
void mmgr_store(const ia_css_ptr vaddr, const void *data, const size_t size)
{
#if SH_CSS_MEMORY_GUARDING
assert(mem_guard_valid(vaddr, size));
#endif
hrt_isp_css_mm_store(vaddr, data, size);
return;
}
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