void nvhost_mutex_unlock(struct nvhost_cpuaccess *ctx, unsigned int idx)
{
struct nvhost_master *dev = cpuaccess_to_dev(ctx);
void __iomem *sync_regs = dev->sync_aperture;
writel(0, sync_regs + (HOST1X_SYNC_MLOCK_0 + idx * 4));
nvhost_module_idle(&dev->mod);
}
static int t20_cpuaccess_mutex_try_lock(struct nvhost_cpuaccess *ctx,
unsigned int idx)
{
struct nvhost_master *dev = cpuaccess_to_dev(ctx);
void __iomem *sync_regs = dev->sync_aperture;
/* mlock registers returns 0 when the lock is aquired.
* writing 0 clears the lock. */
return !!readl(sync_regs + (HOST1X_SYNC_MLOCK_0 + idx * 4));
}
void nvhost_read_module_regs(struct nvhost_cpuaccess *ctx, u32 module,
u32 offset, size_t size, void *values)
{
struct nvhost_master *dev = cpuaccess_to_dev(ctx);
void __iomem *p = ctx->regs[module] + offset;
u32* out = (u32*)values;
BUG_ON(size & 3);
size >>= 2;
nvhost_module_busy(&dev->mod);
while (size--) {
*(out++) = readl(p);
p += 4;
}
rmb();
nvhost_module_idle(&dev->mod);
}
int nvhost_mutex_try_lock(struct nvhost_cpuaccess *ctx, unsigned int idx)
{
struct nvhost_master *dev = cpuaccess_to_dev(ctx);
void __iomem *sync_regs = dev->sync_aperture;
u32 reg;
/* mlock registers returns 0 when the lock is aquired.
* writing 0 clears the lock. */
nvhost_module_busy(&dev->mod);
reg = readl(sync_regs + (HOST1X_SYNC_MLOCK_0 + idx * 4));
if (reg) {
nvhost_module_idle(&dev->mod);
return -EBUSY;
}
return 0;
}
void nvhost_write_module_regs(struct nvhost_cpuaccess *ctx, u32 module,
u32 offset, size_t size, const void *values)
{
struct nvhost_master *dev = cpuaccess_to_dev(ctx);
void __iomem *p = ctx->regs[module] + offset;
const u32* in = (const u32*)values;
BUG_ON(size & 3);
size >>= 2;
nvhost_module_busy(&dev->mod);
while (size--) {
writel(*(in++), p);
p += 4;
}
wmb();
nvhost_module_idle(&dev->mod);
}
