diff options
| -rw-r--r-- | include/asm-sparc64/dma.h | 4 | ||||
| -rw-r--r-- | include/asm-sparc64/parport.h | 22 |
2 files changed, 22 insertions, 4 deletions
diff --git a/include/asm-sparc64/dma.h b/include/asm-sparc64/dma.h index 93e5a062df8..1bf4f7a8fbe 100644 --- a/include/asm-sparc64/dma.h +++ b/include/asm-sparc64/dma.h @@ -205,10 +205,6 @@ do { u32 tmp = sbus_readl((__regs) + DMA_CSR); \ #define for_each_dvma(dma) \ for((dma) = dma_chain; (dma); (dma) = (dma)->next) -extern int get_dma_list(char *); -extern int request_dma(unsigned int, __const__ char *); -extern void free_dma(unsigned int); - /* From PCI */ #ifdef CONFIG_PCI diff --git a/include/asm-sparc64/parport.h b/include/asm-sparc64/parport.h index d3895873e4c..be9509c8f8c 100644 --- a/include/asm-sparc64/parport.h +++ b/include/asm-sparc64/parport.h @@ -23,8 +23,30 @@ static struct sparc_ebus_info { struct ebus_dma_info info; unsigned int addr; unsigned int count; + int lock; } sparc_ebus_dmas[PARPORT_PC_MAX_PORTS]; +static __inline__ int request_dma(unsigned int dmanr, const char *device_id) +{ + if (dmanr >= PARPORT_PC_MAX_PORTS) + return -EINVAL; + if (xchg(&sparc_ebus_dmas[dmanr].lock, 1) != 0) + return -EBUSY; + return 0; +} + +static __inline__ void free_dma(unsigned int dmanr) +{ + if (dmanr >= PARPORT_PC_MAX_PORTS) { + printk(KERN_WARNING "Trying to free DMA%d\n", dmanr); + return; + } + if (xchg(&sparc_ebus_dmas[dmanr].lock, 0) == 0) { + printk(KERN_WARNING "Trying to free free DMA%d\n", dmanr); + return; + } +} + static __inline__ void enable_dma(unsigned int dmanr) { ebus_dma_enable(&sparc_ebus_dmas[dmanr].info, 1); |