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[MIPS] JAZZ fixes

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- restructured irq handling
- switched vdma to use memory allocated via get_free_pages
- setup platform devices for serial, jazz_esp and jazzsonic
- fixed cmos rtc access

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Thomas Bogendoerfer
2007-08-25 11:01:50 +02:00
committed by Ralf Baechle
parent 1f21d2bde0
commit ea202c632a
9 changed files with 181 additions and 187 deletions
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47
arch/mips/jazz/jazzdma.c
View File

@@ -27,7 +27,7 @@
*/
#define CONF_DEBUG_VDMA 0
static unsigned long vdma_pagetable_start;
static VDMA_PGTBL_ENTRY *pgtbl;
static DEFINE_SPINLOCK(vdma_lock);
@@ -46,7 +46,6 @@ static int debuglvl = 3;
*/
static inline void vdma_pgtbl_init(void)
{
VDMA_PGTBL_ENTRY *pgtbl = (VDMA_PGTBL_ENTRY *) vdma_pagetable_start;
unsigned long paddr = 0;
int i;
@@ -60,31 +59,31 @@ static inline void vdma_pgtbl_init(void)
/*
* Initialize the Jazz R4030 dma controller
*/
void __init vdma_init(void)
static int __init vdma_init(void)
{
/*
* Allocate 32k of memory for DMA page tables. This needs to be page
* aligned and should be uncached to avoid cache flushing after every
* update.
*/
vdma_pagetable_start =
(unsigned long) alloc_bootmem_low_pages(VDMA_PGTBL_SIZE);
if (!vdma_pagetable_start)
pgtbl = (VDMA_PGTBL_ENTRY *)__get_free_pages(GFP_KERNEL | GFP_DMA,
get_order(VDMA_PGTBL_SIZE));
if (!pgtbl)
BUG();
dma_cache_wback_inv(vdma_pagetable_start, VDMA_PGTBL_SIZE);
vdma_pagetable_start = KSEG1ADDR(vdma_pagetable_start);
dma_cache_wback_inv((unsigned long)pgtbl, VDMA_PGTBL_SIZE);
pgtbl = (VDMA_PGTBL_ENTRY *)KSEG1ADDR(pgtbl);
/*
* Clear the R4030 translation table
*/
vdma_pgtbl_init();
r4030_write_reg32(JAZZ_R4030_TRSTBL_BASE,
CPHYSADDR(vdma_pagetable_start));
r4030_write_reg32(JAZZ_R4030_TRSTBL_BASE, CPHYSADDR(pgtbl));
r4030_write_reg32(JAZZ_R4030_TRSTBL_LIM, VDMA_PGTBL_SIZE);
r4030_write_reg32(JAZZ_R4030_TRSTBL_INV, 0);
printk("VDMA: R4030 DMA pagetables initialized.\n");
printk(KERN_INFO "VDMA: R4030 DMA pagetables initialized.\n");
return 0;
}
/*
@@ -92,7 +91,6 @@ void __init vdma_init(void)
*/
unsigned long vdma_alloc(unsigned long paddr, unsigned long size)
{
VDMA_PGTBL_ENTRY *entry = (VDMA_PGTBL_ENTRY *) vdma_pagetable_start;
int first, last, pages, frame, i;
unsigned long laddr, flags;
@@ -114,10 +112,10 @@ unsigned long vdma_alloc(unsigned long paddr, unsigned long size)
/*
* Find free chunk
*/
pages = (size + 4095) >> 12; /* no. of pages to allocate */
pages = VDMA_PAGE(paddr + size) - VDMA_PAGE(paddr) + 1;
first = 0;
while (1) {
while (entry[first].owner != VDMA_PAGE_EMPTY &&
while (pgtbl[first].owner != VDMA_PAGE_EMPTY &&
first < VDMA_PGTBL_ENTRIES) first++;
if (first + pages > VDMA_PGTBL_ENTRIES) { /* nothing free */
spin_unlock_irqrestore(&vdma_lock, flags);
@@ -125,12 +123,13 @@ unsigned long vdma_alloc(unsigned long paddr, unsigned long size)
}
last = first + 1;
while (entry[last].owner == VDMA_PAGE_EMPTY
while (pgtbl[last].owner == VDMA_PAGE_EMPTY
&& last - first < pages)
last++;
if (last - first == pages)
break; /* found */
first = last + 1;
}
/*
@@ -140,8 +139,8 @@ unsigned long vdma_alloc(unsigned long paddr, unsigned long size)
frame = paddr & ~(VDMA_PAGESIZE - 1);
for (i = first; i < last; i++) {
entry[i].frame = frame;
entry[i].owner = laddr;
pgtbl[i].frame = frame;
pgtbl[i].owner = laddr;
frame += VDMA_PAGESIZE;
}
@@ -160,10 +159,10 @@ unsigned long vdma_alloc(unsigned long paddr, unsigned long size)
printk("%08x ", i << 12);
printk("\nPADDR: ");
for (i = first; i < last; i++)
printk("%08x ", entry[i].frame);
printk("%08x ", pgtbl[i].frame);
printk("\nOWNER: ");
for (i = first; i < last; i++)
printk("%08x ", entry[i].owner);
printk("%08x ", pgtbl[i].owner);
printk("\n");
}
@@ -181,7 +180,6 @@ EXPORT_SYMBOL(vdma_alloc);
*/
int vdma_free(unsigned long laddr)
{
VDMA_PGTBL_ENTRY *pgtbl = (VDMA_PGTBL_ENTRY *) vdma_pagetable_start;
int i;
i = laddr >> 12;
@@ -213,8 +211,6 @@ EXPORT_SYMBOL(vdma_free);
*/
int vdma_remap(unsigned long laddr, unsigned long paddr, unsigned long size)
{
VDMA_PGTBL_ENTRY *pgtbl =
(VDMA_PGTBL_ENTRY *) vdma_pagetable_start;
int first, pages, npages;
if (laddr > 0xffffff) {
@@ -289,8 +285,6 @@ unsigned long vdma_phys2log(unsigned long paddr)
{
int i;
int frame;
VDMA_PGTBL_ENTRY *pgtbl =
(VDMA_PGTBL_ENTRY *) vdma_pagetable_start;
frame = paddr & ~(VDMA_PAGESIZE - 1);
@@ -312,9 +306,6 @@ EXPORT_SYMBOL(vdma_phys2log);
*/
unsigned long vdma_log2phys(unsigned long laddr)
{
VDMA_PGTBL_ENTRY *pgtbl =
(VDMA_PGTBL_ENTRY *) vdma_pagetable_start;
return pgtbl[laddr >> 12].frame + (laddr & (VDMA_PAGESIZE - 1));
}
@@ -564,3 +555,5 @@ int vdma_get_enable(int channel)
return enable;
}
arch_initcall(vdma_init);