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- #define SOURCEFILE_NAME "hpios.c"
- #include "hpi_internal.h"
- #include "hpidebug.h"
- #include <linux/delay.h>
- #include <linux/sched.h>
- void hpios_delay_micro_seconds(u32 num_micro_sec)
- {
- if ((usecs_to_jiffies(num_micro_sec) > 1) && !in_interrupt()) {
-
- schedule_timeout_uninterruptible(usecs_to_jiffies
- (num_micro_sec));
- } else if (num_micro_sec <= 2000)
- udelay(num_micro_sec);
- else
- mdelay(num_micro_sec / 1000);
- }
- u16 hpios_locked_mem_alloc(struct consistent_dma_area *p_mem_area, u32 size,
- struct pci_dev *pdev)
- {
-
- p_mem_area->vaddr =
- dma_alloc_coherent(&pdev->dev, size, &p_mem_area->dma_handle,
- GFP_DMA32 | GFP_KERNEL);
- if (p_mem_area->vaddr) {
- HPI_DEBUG_LOG(DEBUG, "allocated %d bytes, dma 0x%x vma %p\n",
- size, (unsigned int)p_mem_area->dma_handle,
- p_mem_area->vaddr);
- p_mem_area->pdev = &pdev->dev;
- p_mem_area->size = size;
- return 0;
- } else {
- HPI_DEBUG_LOG(WARNING,
- "failed to allocate %d bytes locked memory\n", size);
- p_mem_area->size = 0;
- return 1;
- }
- }
- u16 hpios_locked_mem_free(struct consistent_dma_area *p_mem_area)
- {
- if (p_mem_area->size) {
- dma_free_coherent(p_mem_area->pdev, p_mem_area->size,
- p_mem_area->vaddr, p_mem_area->dma_handle);
- HPI_DEBUG_LOG(DEBUG, "freed %lu bytes, dma 0x%x vma %p\n",
- (unsigned long)p_mem_area->size,
- (unsigned int)p_mem_area->dma_handle,
- p_mem_area->vaddr);
- p_mem_area->size = 0;
- return 0;
- } else {
- return 1;
- }
- }
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