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Kod Konular Değişiklik İstekleri İşlemler Paketler Projeler Sürüm Wiki Aktivite

Merge tag 'csky-for-linus-5.4-rc1' of git://github.com/c-sky/csky-linux

Kaynağa Gözat 
Pull csky updates from Guo Ren:
 "This round of csky subsystem just some fixups:

   - Fix mb() synchronization problem

   - Fix dma_alloc_coherent with PAGE_SO attribute

   - Fix cache_op failed when cross memory ZONEs

   - Optimize arch_sync_dma_for_cpu/device with dma_inv_range

   - Fix ioremap function losing

   - Fix arch_get_unmapped_area() implementation

   - Fix defer cache flush for 610

   - Support kernel non-aligned access

   - Fix 610 vipt cache flush mechanism

   - Fix add zero_fp fixup perf backtrace panic

   - Move static keyword to the front of declaration

   - Fix csky_pmu.max_period assignment

   - Use generic free_initrd_mem()

   - entry: Remove unneeded need_resched() loop"

* tag 'csky-for-linus-5.4-rc1' of git://github.com/c-sky/csky-linux:
  csky: Move static keyword to the front of declaration
  csky: entry: Remove unneeded need_resched() loop
  csky: Fixup csky_pmu.max_period assignment
  csky: Fixup add zero_fp fixup perf backtrace panic
  csky: Use generic free_initrd_mem()
  csky: Fixup 610 vipt cache flush mechanism
  csky: Support kernel non-aligned access
  csky: Fixup defer cache flush for 610
  csky: Fixup arch_get_unmapped_area() implementation
  csky: Fixup ioremap function losing
  csky: Optimize arch_sync_dma_for_cpu/device with dma_inv_range
  csky/dma: Fixup cache_op failed when cross memory ZONEs
  csky: Fixup dma_alloc_coherent with PAGE_SO attribute
  csky: Fixup mb() synchronization problem
Bu işleme şunda yer alıyor:
Linus Torvalds
2019-09-30 10:16:17 -07:00
ebeveyn cef0aa0ce8 9af032a301
işleme 80b29b6b8c
17 değiştirilmiş dosya ile 292 ekleme ve 213 silme
Yama Dosyasını İndir Diff Dosyasını İndir Tüm dosyaları genişlet Tüm dosyaları daralt

7
arch/csky/mm/cachev1.c
Dosyayı Görüntüle

@@ -120,7 +120,12 @@ void dma_wbinv_range(unsigned long start, unsigned long end)
cache_op_range(start, end, DATA_CACHE|CACHE_CLR|CACHE_INV, 1);
}
void dma_inv_range(unsigned long start, unsigned long end)
{
cache_op_range(start, end, DATA_CACHE|CACHE_CLR|CACHE_INV, 1);
}
void dma_wb_range(unsigned long start, unsigned long end)
{
cache_op_range(start, end, DATA_CACHE|CACHE_INV, 1);
cache_op_range(start, end, DATA_CACHE|CACHE_CLR|CACHE_INV, 1);
}

11
arch/csky/mm/cachev2.c
Dosyayı Görüntüle

@@ -69,11 +69,20 @@ void dma_wbinv_range(unsigned long start, unsigned long end)
sync_is();
}
void dma_inv_range(unsigned long start, unsigned long end)
{
unsigned long i = start & ~(L1_CACHE_BYTES - 1);
for (; i < end; i += L1_CACHE_BYTES)
asm volatile("dcache.iva %0\n"::"r"(i):"memory");
sync_is();
}
void dma_wb_range(unsigned long start, unsigned long end)
{
unsigned long i = start & ~(L1_CACHE_BYTES - 1);
for (; i < end; i += L1_CACHE_BYTES)
asm volatile("dcache.civa %0\n"::"r"(i):"memory");
asm volatile("dcache.cva %0\n"::"r"(i):"memory");
sync_is();
}

76
arch/csky/mm/dma-mapping.c
Dosyayı Görüntüle

@@ -14,69 +14,50 @@
#include <linux/version.h>
#include <asm/cache.h>
void arch_dma_prep_coherent(struct page *page, size_t size)
{
if (PageHighMem(page)) {
unsigned int count = PAGE_ALIGN(size) >> PAGE_SHIFT;
do {
void *ptr = kmap_atomic(page);
size_t _size = (size < PAGE_SIZE) ? size : PAGE_SIZE;
memset(ptr, 0, _size);
dma_wbinv_range((unsigned long)ptr,
(unsigned long)ptr + _size);
kunmap_atomic(ptr);
page++;
size -= PAGE_SIZE;
count--;
} while (count);
} else {
void *ptr = page_address(page);
memset(ptr, 0, size);
dma_wbinv_range((unsigned long)ptr, (unsigned long)ptr + size);
}
}
static inline void cache_op(phys_addr_t paddr, size_t size,
void (*fn)(unsigned long start, unsigned long end))
{
struct page *page = pfn_to_page(paddr >> PAGE_SHIFT);
unsigned int offset = paddr & ~PAGE_MASK;
size_t left = size;
unsigned long start;
struct page *page = phys_to_page(paddr);
void *start = __va(page_to_phys(page));
unsigned long offset = offset_in_page(paddr);
size_t left = size;
do {
size_t len = left;
if (offset + len > PAGE_SIZE)
len = PAGE_SIZE - offset;
if (PageHighMem(page)) {
void *addr;
start = kmap_atomic(page);
if (offset + len > PAGE_SIZE) {
if (offset >= PAGE_SIZE) {
page += offset >> PAGE_SHIFT;
offset &= ~PAGE_MASK;
}
len = PAGE_SIZE - offset;
}
fn((unsigned long)start + offset,
(unsigned long)start + offset + len);
addr = kmap_atomic(page);
start = (unsigned long)(addr + offset);
fn(start, start + len);
kunmap_atomic(addr);
kunmap_atomic(start);
} else {
start = (unsigned long)phys_to_virt(paddr);
fn(start, start + size);
fn((unsigned long)start + offset,
(unsigned long)start + offset + len);
}
offset = 0;
page++;
start += PAGE_SIZE;
left -= len;
} while (left);
}
static void dma_wbinv_set_zero_range(unsigned long start, unsigned long end)
{
memset((void *)start, 0, end - start);
dma_wbinv_range(start, end);
}
void arch_dma_prep_coherent(struct page *page, size_t size)
{
cache_op(page_to_phys(page), size, dma_wbinv_set_zero_range);
}
void arch_sync_dma_for_device(struct device *dev, phys_addr_t paddr,
size_t size, enum dma_data_direction dir)
{
@@ -98,11 +79,10 @@ void arch_sync_dma_for_cpu(struct device *dev, phys_addr_t paddr,
{
switch (dir) {
case DMA_TO_DEVICE:
cache_op(paddr, size, dma_wb_range);
break;
return;
case DMA_FROM_DEVICE:
case DMA_BIDIRECTIONAL:
cache_op(paddr, size, dma_wbinv_range);
cache_op(paddr, size, dma_inv_range);
break;
default:
BUG();

16
arch/csky/mm/init.c
Dosyayı Görüntüle

@@ -60,22 +60,6 @@ void __init mem_init(void)
mem_init_print_info(NULL);
}
#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{
if (start < end)
pr_info("Freeing initrd memory: %ldk freed\n",
(end - start) >> 10);
for (; start < end; start += PAGE_SIZE) {
ClearPageReserved(virt_to_page(start));
init_page_count(virt_to_page(start));
free_page(start);
totalram_pages_inc();
}
}
#endif
extern char __init_begin[], __init_end[];
void free_initmem(void)

27
arch/csky/mm/ioremap.c
Dosyayı Görüntüle

@@ -8,12 +8,12 @@
#include <asm/pgtable.h>
void __iomem *ioremap(phys_addr_t addr, size_t size)
static void __iomem *__ioremap_caller(phys_addr_t addr, size_t size,
pgprot_t prot, void *caller)
{
phys_addr_t last_addr;
unsigned long offset, vaddr;
struct vm_struct *area;
pgprot_t prot;
last_addr = addr + size - 1;
if (!size || last_addr < addr)
@@ -23,15 +23,12 @@ void __iomem *ioremap(phys_addr_t addr, size_t size)
addr &= PAGE_MASK;
size = PAGE_ALIGN(size + offset);
area = get_vm_area_caller(size, VM_ALLOC, __builtin_return_address(0));
area = get_vm_area_caller(size, VM_IOREMAP, caller);
if (!area)
return NULL;
vaddr = (unsigned long)area->addr;
prot = __pgprot(_PAGE_PRESENT | __READABLE | __WRITEABLE |
_PAGE_GLOBAL | _CACHE_UNCACHED | _PAGE_SO);
if (ioremap_page_range(vaddr, vaddr + size, addr, prot)) {
free_vm_area(area);
return NULL;
@@ -39,7 +36,20 @@ void __iomem *ioremap(phys_addr_t addr, size_t size)
return (void __iomem *)(vaddr + offset);
}
EXPORT_SYMBOL(ioremap);
void __iomem *__ioremap(phys_addr_t phys_addr, size_t size, pgprot_t prot)
{
return __ioremap_caller(phys_addr, size, prot,
__builtin_return_address(0));
}
EXPORT_SYMBOL(__ioremap);
void __iomem *ioremap_cache(phys_addr_t phys_addr, size_t size)
{
return __ioremap_caller(phys_addr, size, PAGE_KERNEL,
__builtin_return_address(0));
}
EXPORT_SYMBOL(ioremap_cache);
void iounmap(void __iomem *addr)
{
@@ -51,10 +61,9 @@ pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
unsigned long size, pgprot_t vma_prot)
{
if (!pfn_valid(pfn)) {
vma_prot.pgprot |= _PAGE_SO;
return pgprot_noncached(vma_prot);
} else if (file->f_flags & O_SYNC) {
return pgprot_noncached(vma_prot);
return pgprot_writecombine(vma_prot);
}
return vma_prot;