static void t20_intr_set_host_clocks_per_usec(struct nvhost_intr *intr, u32 cpm)
{
struct nvhost_master *dev = intr_to_dev(intr);
void __iomem *sync_regs = dev->sync_aperture;
/* write microsecond clock register */
writel(cpm, sync_regs + HOST1X_SYNC_USEC_CLK);
}
/**
* Host general interrupt service function
* Handles read / write failures
*/
static irqreturn_t t20_intr_host1x_isr(int irq, void *dev_id)
{
struct nvhost_intr *intr = dev_id;
void __iomem *sync_regs = intr_to_dev(intr)->sync_aperture;
u32 stat;
u32 ext_stat;
u32 addr;
stat = readl(sync_regs + HOST1X_SYNC_HINTSTATUS);
ext_stat = readl(sync_regs + HOST1X_SYNC_HINTSTATUS_EXT);
if (HOST1X_VAL(SYNC_HINTSTATUS_EXT, IP_READ_INT, ext_stat)) {
addr = readl(sync_regs + HOST1X_SYNC_IP_READ_TIMEOUT_ADDR);
pr_err("Host read timeout at address %x\n", addr);
}
if (HOST1X_VAL(SYNC_HINTSTATUS_EXT, IP_WRITE_INT, ext_stat)) {
addr = readl(sync_regs + HOST1X_SYNC_IP_WRITE_TIMEOUT_ADDR);
pr_err("Host write timeout at address %x\n", addr);
}
writel(ext_stat, sync_regs + HOST1X_SYNC_HINTSTATUS_EXT);
writel(stat, sync_regs + HOST1X_SYNC_HINTSTATUS);
return IRQ_HANDLED;
}
static void t20_intr_set_syncpt_threshold(struct nvhost_intr *intr, u32 id, u32 thresh)
{
struct nvhost_master *dev = intr_to_dev(intr);
void __iomem *sync_regs = dev->sync_aperture;
thresh &= 0xffff;
writel(thresh, sync_regs + (HOST1X_SYNC_SYNCPT_INT_THRESH_0 + id * 4));
}
static void t20_intr_free_host_general_irq(struct nvhost_intr *intr)
{
if (intr->host_general_irq_requested) {
void __iomem *sync_regs = intr_to_dev(intr)->sync_aperture;
/* master disable for general (not syncpt) host interrupts */
writel(0, sync_regs + HOST1X_SYNC_INTMASK);
free_irq(intr->host_general_irq, intr);
intr->host_general_irq_requested = false;
}
}
static void t20_intr_disable_all_syncpt_intrs(struct nvhost_intr *intr)
{
struct nvhost_master *dev = intr_to_dev(intr);
void __iomem *sync_regs = dev->sync_aperture;
/* disable interrupts for both cpu's */
writel(0, sync_regs + HOST1X_SYNC_SYNCPT_THRESH_INT_DISABLE);
/* clear status for both cpu's */
writel(0xffffffffu, sync_regs +
HOST1X_SYNC_SYNCPT_THRESH_CPU0_INT_STATUS);
writel(0xffffffffu, sync_regs +
HOST1X_SYNC_SYNCPT_THRESH_CPU1_INT_STATUS);
}
static void t20_intr_init_host_sync(struct nvhost_intr *intr)
{
struct nvhost_master *dev = intr_to_dev(intr);
void __iomem *sync_regs = dev->sync_aperture;
/* disable the ip_busy_timeout. this prevents write drops, etc.
* there's no real way to recover from a hung client anyway.
*/
writel(0, sync_regs + HOST1X_SYNC_IP_BUSY_TIMEOUT);
/* increase the auto-ack timout to the maximum value. 2d will hang
* otherwise on ap20.
*/
writel(0xff, sync_regs + HOST1X_SYNC_CTXSW_TIMEOUT_CFG);
}
/**
* Sync point threshold interrupt service function
* Handles sync point threshold triggers, in interrupt context
*/
irqreturn_t t20_intr_syncpt_thresh_isr(int irq, void *dev_id)
{
struct nvhost_intr_syncpt *syncpt = dev_id;
unsigned int id = syncpt->id;
struct nvhost_intr *intr = intr_syncpt_to_intr(syncpt);
void __iomem *sync_regs = intr_to_dev(intr)->sync_aperture;
writel(BIT(id),
sync_regs + HOST1X_SYNC_SYNCPT_THRESH_INT_DISABLE);
writel(BIT(id),
sync_regs + HOST1X_SYNC_SYNCPT_THRESH_CPU0_INT_STATUS);
return IRQ_WAKE_THREAD;
}
static int t20_intr_request_host_general_irq(struct nvhost_intr *intr)
{
void __iomem *sync_regs = intr_to_dev(intr)->sync_aperture;
int err;
if (intr->host_general_irq_requested)
return 0;
/* master disable for general (not syncpt) host interrupts */
writel(0, sync_regs + HOST1X_SYNC_INTMASK);
/* clear status & extstatus */
writel(0xfffffffful, sync_regs + HOST1X_SYNC_HINTSTATUS_EXT);
writel(0xfffffffful, sync_regs + HOST1X_SYNC_HINTSTATUS);
err = request_irq(intr->host_general_irq, t20_intr_host1x_isr, 0,
"host_status", intr);
if (err)
return err;
/* enable extra interrupt sources IP_READ_INT and IP_WRITE_INT */
writel(BIT(30) | BIT(31), sync_regs + HOST1X_SYNC_HINTMASK_EXT);
/* enable extra interrupt sources */
writel(BIT(31), sync_regs + HOST1X_SYNC_HINTMASK);
/* enable host module interrupt to CPU0 */
writel(BIT(0), sync_regs + HOST1X_SYNC_INTC0MASK);
/* master enable for general (not syncpt) host interrupts */
writel(BIT(0), sync_regs + HOST1X_SYNC_INTMASK);
intr->host_general_irq_requested = true;
return err;
}
static void t20_intr_enable_syncpt_intr(struct nvhost_intr *intr, u32 id)
{
struct nvhost_master *dev = intr_to_dev(intr);
void __iomem *sync_regs = dev->sync_aperture;
writel(BIT(id), sync_regs + HOST1X_SYNC_SYNCPT_THRESH_INT_ENABLE_CPU0);
}