/**
* get the whole size of genpool
*/
static size_t hisi_iova_size(struct gen_pool *pool)
{
size_t size;
mutex_lock(&iova_pool_mutex);
size = gen_pool_size(pool);
mutex_unlock(&iova_pool_mutex);
return size;
}
/**
* zynq_ocm_remove - Remove method for the OCM driver
* @pdev: Pointer to the platform_device structure
*
* This function is called if a device is physically removed from the system or
* if the driver module is being unloaded. It frees all resources allocated to
* the device.
*
* Return: 0 on success and error value on failure
*/
static int zynq_ocm_remove(struct platform_device *pdev)
{
struct zynq_ocm_dev *zynq_ocm = platform_get_drvdata(pdev);
if (gen_pool_avail(zynq_ocm->pool) < gen_pool_size(zynq_ocm->pool))
dev_dbg(&pdev->dev, "removed while SRAM allocated\n");
return 0;
}
static int sram_remove(struct vmm_device *dev)
{
struct sram_dev *sram = vmm_devdrv_get_data(dev);
if (gen_pool_avail(sram->pool) < gen_pool_size(sram->pool))
vmm_printf("%s: removed while SRAM allocated\n", dev->name);
gen_pool_destroy(sram->pool);
if (sram->clk)
clk_disable_unprepare(sram->clk);
return 0;
}
static int sram_remove(struct platform_device *pdev)
{
struct sram_dev *sram = platform_get_drvdata(pdev);
if (gen_pool_avail(sram->pool) < gen_pool_size(sram->pool))
dev_dbg(&pdev->dev, "removed while SRAM allocated\n");
gen_pool_destroy(sram->pool);
if (sram->clk)
clk_disable_unprepare(sram->clk);
return 0;
}
static int ghes_estatus_pool_expand(unsigned long len)
{
unsigned long i, pages, size, addr;
int ret;
ghes_estatus_pool_size_request += PAGE_ALIGN(len);
size = gen_pool_size(ghes_estatus_pool);
if (size >= ghes_estatus_pool_size_request)
return 0;
pages = (ghes_estatus_pool_size_request - size) / PAGE_SIZE;
for (i = 0; i < pages; i++) {
addr = __get_free_page(GFP_KERNEL);
if (!addr)
return -ENOMEM;
ret = gen_pool_add(ghes_estatus_pool, addr, PAGE_SIZE, -1);
if (ret)
return ret;
}
return 0;
}