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path: root/drivers/net/ipa/ipa_interrupt.c
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Diffstat (limited to 'drivers/net/ipa/ipa_interrupt.c')
-rw-r--r--drivers/net/ipa/ipa_interrupt.c54
1 files changed, 41 insertions, 13 deletions
diff --git a/drivers/net/ipa/ipa_interrupt.c b/drivers/net/ipa/ipa_interrupt.c
index 61dd7605bcb6..c46df0b7c4e5 100644
--- a/drivers/net/ipa/ipa_interrupt.c
+++ b/drivers/net/ipa/ipa_interrupt.c
@@ -54,12 +54,14 @@ static void ipa_interrupt_process(struct ipa_interrupt *interrupt, u32 irq_id)
bool uc_irq = ipa_interrupt_uc(interrupt, irq_id);
struct ipa *ipa = interrupt->ipa;
u32 mask = BIT(irq_id);
+ u32 offset;
/* For microcontroller interrupts, clear the interrupt right away,
* "to avoid clearing unhandled interrupts."
*/
+ offset = ipa_reg_irq_clr_offset(ipa->version);
if (uc_irq)
- iowrite32(mask, ipa->reg_virt + IPA_REG_IRQ_CLR_OFFSET);
+ iowrite32(mask, ipa->reg_virt + offset);
if (irq_id < IPA_IRQ_COUNT && interrupt->handler[irq_id])
interrupt->handler[irq_id](interrupt->ipa, irq_id);
@@ -69,7 +71,7 @@ static void ipa_interrupt_process(struct ipa_interrupt *interrupt, u32 irq_id)
* so defer clearing until after the handler has been called.
*/
if (!uc_irq)
- iowrite32(mask, ipa->reg_virt + IPA_REG_IRQ_CLR_OFFSET);
+ iowrite32(mask, ipa->reg_virt + offset);
}
/* Process all IPA interrupt types that have been signaled */
@@ -77,13 +79,15 @@ static void ipa_interrupt_process_all(struct ipa_interrupt *interrupt)
{
struct ipa *ipa = interrupt->ipa;
u32 enabled = interrupt->enabled;
+ u32 offset;
u32 mask;
/* The status register indicates which conditions are present,
* including conditions whose interrupt is not enabled. Handle
* only the enabled ones.
*/
- mask = ioread32(ipa->reg_virt + IPA_REG_IRQ_STTS_OFFSET);
+ offset = ipa_reg_irq_stts_offset(ipa->version);
+ mask = ioread32(ipa->reg_virt + offset);
while ((mask &= enabled)) {
do {
u32 irq_id = __ffs(mask);
@@ -92,7 +96,7 @@ static void ipa_interrupt_process_all(struct ipa_interrupt *interrupt)
ipa_interrupt_process(interrupt, irq_id);
} while (mask);
- mask = ioread32(ipa->reg_virt + IPA_REG_IRQ_STTS_OFFSET);
+ mask = ioread32(ipa->reg_virt + offset);
}
}
@@ -115,14 +119,17 @@ static irqreturn_t ipa_isr(int irq, void *dev_id)
{
struct ipa_interrupt *interrupt = dev_id;
struct ipa *ipa = interrupt->ipa;
+ u32 offset;
u32 mask;
- mask = ioread32(ipa->reg_virt + IPA_REG_IRQ_STTS_OFFSET);
+ offset = ipa_reg_irq_stts_offset(ipa->version);
+ mask = ioread32(ipa->reg_virt + offset);
if (mask & interrupt->enabled)
return IRQ_WAKE_THREAD;
/* Nothing in the mask was supposed to cause an interrupt */
- iowrite32(mask, ipa->reg_virt + IPA_REG_IRQ_CLR_OFFSET);
+ offset = ipa_reg_irq_clr_offset(ipa->version);
+ iowrite32(mask, ipa->reg_virt + offset);
dev_err(&ipa->pdev->dev, "%s: unexpected interrupt, mask 0x%08x\n",
__func__, mask);
@@ -136,15 +143,22 @@ static void ipa_interrupt_suspend_control(struct ipa_interrupt *interrupt,
{
struct ipa *ipa = interrupt->ipa;
u32 mask = BIT(endpoint_id);
+ u32 offset;
u32 val;
/* assert(mask & ipa->available); */
- val = ioread32(ipa->reg_virt + IPA_REG_IRQ_SUSPEND_EN_OFFSET);
+
+ /* IPA version 3.0 does not support TX_SUSPEND interrupt control */
+ if (ipa->version == IPA_VERSION_3_0)
+ return;
+
+ offset = ipa_reg_irq_suspend_en_offset(ipa->version);
+ val = ioread32(ipa->reg_virt + offset);
if (enable)
val |= mask;
else
val &= ~mask;
- iowrite32(val, ipa->reg_virt + IPA_REG_IRQ_SUSPEND_EN_OFFSET);
+ iowrite32(val, ipa->reg_virt + offset);
}
/* Enable TX_SUSPEND for an endpoint */
@@ -165,10 +179,18 @@ ipa_interrupt_suspend_disable(struct ipa_interrupt *interrupt, u32 endpoint_id)
void ipa_interrupt_suspend_clear_all(struct ipa_interrupt *interrupt)
{
struct ipa *ipa = interrupt->ipa;
+ u32 offset;
u32 val;
- val = ioread32(ipa->reg_virt + IPA_REG_IRQ_SUSPEND_INFO_OFFSET);
- iowrite32(val, ipa->reg_virt + IPA_REG_IRQ_SUSPEND_CLR_OFFSET);
+ offset = ipa_reg_irq_suspend_info_offset(ipa->version);
+ val = ioread32(ipa->reg_virt + offset);
+
+ /* SUSPEND interrupt status isn't cleared on IPA version 3.0 */
+ if (ipa->version == IPA_VERSION_3_0)
+ return;
+
+ offset = ipa_reg_irq_suspend_clr_offset(ipa->version);
+ iowrite32(val, ipa->reg_virt + offset);
}
/* Simulate arrival of an IPA TX_SUSPEND interrupt */
@@ -182,13 +204,15 @@ void ipa_interrupt_add(struct ipa_interrupt *interrupt,
enum ipa_irq_id ipa_irq, ipa_irq_handler_t handler)
{
struct ipa *ipa = interrupt->ipa;
+ u32 offset;
/* assert(ipa_irq < IPA_IRQ_COUNT); */
interrupt->handler[ipa_irq] = handler;
/* Update the IPA interrupt mask to enable it */
interrupt->enabled |= BIT(ipa_irq);
- iowrite32(interrupt->enabled, ipa->reg_virt + IPA_REG_IRQ_EN_OFFSET);
+ offset = ipa_reg_irq_en_offset(ipa->version);
+ iowrite32(interrupt->enabled, ipa->reg_virt + offset);
}
/* Remove the handler for an IPA interrupt type */
@@ -196,11 +220,13 @@ void
ipa_interrupt_remove(struct ipa_interrupt *interrupt, enum ipa_irq_id ipa_irq)
{
struct ipa *ipa = interrupt->ipa;
+ u32 offset;
/* assert(ipa_irq < IPA_IRQ_COUNT); */
/* Update the IPA interrupt mask to disable it */
interrupt->enabled &= ~BIT(ipa_irq);
- iowrite32(interrupt->enabled, ipa->reg_virt + IPA_REG_IRQ_EN_OFFSET);
+ offset = ipa_reg_irq_en_offset(ipa->version);
+ iowrite32(interrupt->enabled, ipa->reg_virt + offset);
interrupt->handler[ipa_irq] = NULL;
}
@@ -211,6 +237,7 @@ struct ipa_interrupt *ipa_interrupt_setup(struct ipa *ipa)
struct device *dev = &ipa->pdev->dev;
struct ipa_interrupt *interrupt;
unsigned int irq;
+ u32 offset;
int ret;
ret = platform_get_irq_byname(ipa->pdev, "ipa");
@@ -228,7 +255,8 @@ struct ipa_interrupt *ipa_interrupt_setup(struct ipa *ipa)
interrupt->irq = irq;
/* Start with all IPA interrupts disabled */
- iowrite32(0, ipa->reg_virt + IPA_REG_IRQ_EN_OFFSET);
+ offset = ipa_reg_irq_en_offset(ipa->version);
+ iowrite32(0, ipa->reg_virt + offset);
ret = request_threaded_irq(irq, ipa_isr, ipa_isr_thread, IRQF_ONESHOT,
"ipa", interrupt);