#include <asm/page.h> /* get_order */
#include <asm/pgalloc.h>
#include <asm/uaccess.h>
+#include <asm/tlbflush.h> /* for purge_tlb_*() macros */
-static struct proc_dir_entry * proc_gsc_root = NULL;
+static struct proc_dir_entry * proc_gsc_root __read_mostly = NULL;
static int pcxl_proc_info(char *buffer, char **start, off_t offset, int length);
-static unsigned long pcxl_used_bytes = 0;
-static unsigned long pcxl_used_pages = 0;
+static unsigned long pcxl_used_bytes __read_mostly = 0;
+static unsigned long pcxl_used_pages __read_mostly = 0;
extern unsigned long pcxl_dma_start; /* Start of pcxl dma mapping area */
static spinlock_t pcxl_res_lock;
if (!pte_none(*pte))
printk(KERN_ERR "map_pte_uncached: page already exists\n");
set_pte(pte, __mk_pte(*paddr_ptr, PAGE_KERNEL_UNC));
+ purge_tlb_start();
pdtlb_kernel(orig_vaddr);
+ purge_tlb_end();
vaddr += PAGE_SIZE;
orig_vaddr += PAGE_SIZE;
(*paddr_ptr) += PAGE_SIZE;
if (end > PGDIR_SIZE)
end = PGDIR_SIZE;
do {
- pte_t * pte = pte_alloc_kernel(&init_mm, pmd, vaddr);
+ pte_t * pte = pte_alloc_kernel(pmd, vaddr);
if (!pte)
return -ENOMEM;
if (map_pte_uncached(pte, orig_vaddr, end - vaddr, paddr_ptr))
end = PMD_SIZE;
do {
pte_t page = *pte;
- pte_clear(pte);
+ pte_clear(&init_mm, vaddr, pte);
+ purge_tlb_start();
pdtlb_kernel(orig_vaddr);
+ purge_tlb_end();
vaddr += PAGE_SIZE;
orig_vaddr += PAGE_SIZE;
pte++;
u_long mask, flags;
unsigned int pages_needed = size >> PAGE_SHIFT;
- ASSERT(pages_needed);
- ASSERT((pages_needed * PAGE_SIZE) < DMA_CHUNK_SIZE);
- ASSERT(pages_needed < (BITS_PER_LONG - PAGE_SHIFT));
-
mask = (u_long) -1L;
mask >>= BITS_PER_LONG - pages_needed;
#define PCXL_FREE_MAPPINGS(idx, m, size) \
u##size *res_ptr = (u##size *)&(pcxl_res_map[(idx) + (((size >> 3) - 1) & (~((size >> 3) - 1)))]); \
- ASSERT((*res_ptr & m) == m); \
+ /* BUG_ON((*res_ptr & m) != m); */ \
*res_ptr &= ~m;
/*
unsigned int res_idx = (vaddr - pcxl_dma_start) >> (PAGE_SHIFT + 3);
unsigned int pages_mapped = size >> PAGE_SHIFT;
- ASSERT(pages_mapped);
- ASSERT((pages_mapped * PAGE_SIZE) < DMA_CHUNK_SIZE);
- ASSERT(pages_mapped < (BITS_PER_LONG - PAGE_SHIFT));
-
mask = (u_long) -1L;
mask >>= BITS_PER_LONG - pages_mapped;
static int __init
pcxl_dma_init(void)
{
- if (pcxl_dma_start == 0)
- return 0;
+ if (pcxl_dma_start == 0)
+ return 0;
- spin_lock_init(&pcxl_res_lock);
- pcxl_res_size = PCXL_DMA_MAP_SIZE >> (PAGE_SHIFT + 3);
- pcxl_res_hint = 0;
- pcxl_res_map = (char *)__get_free_pages(GFP_KERNEL,
+ spin_lock_init(&pcxl_res_lock);
+ pcxl_res_size = PCXL_DMA_MAP_SIZE >> (PAGE_SHIFT + 3);
+ pcxl_res_hint = 0;
+ pcxl_res_map = (char *)__get_free_pages(GFP_KERNEL,
get_order(pcxl_res_size));
- memset(pcxl_res_map, 0, pcxl_res_size);
- proc_gsc_root = proc_mkdir("gsc", 0);
- create_proc_info_entry("dino", 0, proc_gsc_root, pcxl_proc_info);
- return 0;
+ memset(pcxl_res_map, 0, pcxl_res_size);
+ proc_gsc_root = proc_mkdir("gsc", 0);
+ if (!proc_gsc_root)
+ printk(KERN_WARNING
+ "pcxl_dma_init: Unable to create gsc /proc dir entry\n");
+ else {
+ struct proc_dir_entry* ent;
+ ent = create_proc_info_entry("pcxl_dma", 0,
+ proc_gsc_root, pcxl_proc_info);
+ if (!ent)
+ printk(KERN_WARNING
+ "pci-dma.c: Unable to create pcxl_dma /proc entry.\n");
+ }
+ return 0;
}
__initcall(pcxl_dma_init);
-static void * pa11_dma_alloc_consistent (struct device *dev, size_t size, dma_addr_t *dma_handle, int flag)
+static void * pa11_dma_alloc_consistent (struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flag)
{
unsigned long vaddr;
unsigned long paddr;
};
static void *fail_alloc_consistent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, int flag)
+ dma_addr_t *dma_handle, gfp_t flag)
{
return NULL;
}
static void *pa11_dma_alloc_noncoherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, int flag)
+ dma_addr_t *dma_handle, gfp_t flag)
{
void *addr = NULL;
static int pcxl_proc_info(char *buf, char **start, off_t offset, int len)
{
+#if 0
u_long i = 0;
unsigned long *res_ptr = (u_long *)pcxl_res_map;
- unsigned long total_pages = pcxl_res_size << 3; /* 8 bits per byte */
+#endif
+ unsigned long total_pages = pcxl_res_size << 3; /* 8 bits per byte */
- sprintf(buf, "\nDMA Mapping Area size : %d bytes (%d pages)\n",
- PCXL_DMA_MAP_SIZE,
- (pcxl_res_size << 3) ); /* 1 bit per page */
+ sprintf(buf, "\nDMA Mapping Area size : %d bytes (%ld pages)\n",
+ PCXL_DMA_MAP_SIZE, total_pages);
- sprintf(buf, "%sResource bitmap : %d bytes (%d pages)\n",
- buf, pcxl_res_size, pcxl_res_size << 3); /* 8 bits per byte */
+ sprintf(buf, "%sResource bitmap : %d bytes\n", buf, pcxl_res_size);
strcat(buf, " total: free: used: % used:\n");
sprintf(buf, "%sblocks %8d %8ld %8ld %8ld%%\n", buf, pcxl_res_size,
sprintf(buf, "%spages %8ld %8ld %8ld %8ld%%\n", buf, total_pages,
total_pages - pcxl_used_pages, pcxl_used_pages,
(pcxl_used_pages * 100 / total_pages));
-
+
+#if 0
strcat(buf, "\nResource bitmap:");
for(; i < (pcxl_res_size / sizeof(u_long)); ++i, ++res_ptr) {
strcat(buf,"\n ");
sprintf(buf, "%s %08lx", buf, *res_ptr);
}
+#endif
strcat(buf, "\n");
return strlen(buf);
}