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rk3288: add a interface for user space to query iommu status

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This commit is contained in:
ljf 2014-04-22 16:59:21 +08:00
parent a78e027a84
commit 3fc20e7896
2 changed files with 17 additions and 3 deletions
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18
arch/arm/mach-rockchip/vcodec_service.c
View File

@ -43,8 +43,8 @@
#include <linux/rockchip_ion.h>
#endif
#if defined(CONFIG_ROCKCHIP_IOMMU)
//#define CONFIG_VCODEC_MMU
#if defined(CONFIG_ROCKCHIP_IOMMU) & defined(CONFIG_ION_ROCKCHIP)
#define CONFIG_VCODEC_MMU
#endif
#ifdef CONFIG_VCODEC_MMU
@ -304,7 +304,7 @@ typedef struct vpu_service_info {
struct dentry *debugfs_file_regs;
u32 irq_status;
#if defined(CONFIG_ION_ROCKCHIP)
#if defined(CONFIG_VCODEC_MMU)
struct ion_client * ion_client;
#endif
@ -1227,6 +1227,18 @@ static long vpu_service_ioctl(struct file *filp, unsigned int cmd, unsigned long
mutex_unlock(&pservice->lock);
break;
}
case VPU_IOC_PROBE_IOMMU_STATUS: {
#if defined(CONFIG_VCODEC_MMU)
int iommu_enable = 1;
#else
int iommu_enable = 0;
#endif
if (copy_to_user((void __user *)arg, &iommu_enable, sizeof(int))) {
pr_err("error: VPU_IOC_PROBE_IOMMU_STATUS copy_to_user failed\n");
return -EFAULT;
}
break;
}
default : {
pr_err("error: unknow vpu service ioctl cmd %x\n", cmd);
break;

2
arch/arm/mach-rockchip/vcodec_service.h
View File

@ -33,6 +33,8 @@
#define VPU_IOC_SET_REG _IOW(VPU_IOC_MAGIC, 3, unsigned long)
#define VPU_IOC_GET_REG _IOW(VPU_IOC_MAGIC, 4, unsigned long)
#define VPU_IOC_PROBE_IOMMU_STATUS _IOR(VPU_IOC_MAGIC, 5, unsigned long)
typedef enum VPU_CLIENT_TYPE {
VPU_ENC = 0x0,
VPU_DEC = 0x1,