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rtase: Implement the interrupt routine and rtase_poll

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1. Implement rtase_interrupt to handle txQ0/rxQ0, txQ4~txQ7 interrupts,
and implement rtase_q_interrupt to handle txQ1/rxQ1, txQ2/rxQ2 and
txQ3/rxQ3 interrupts.
2. Implement rtase_poll to call ring_handler to process the tx or
rx packet of each ring. If the returned value is budget,it means that
there is still work of a certain ring that has not yet been completed.

Signed-off-by: Justin Lai <justinlai0215@realtek.com>
Link: https://patch.msgid.link/20240904032114.247117-5-justinlai0215@realtek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Justin Lai 2024-09-04 11:21:05 +08:00 committed by Jakub Kicinski
parent 5a2a2f1524
commit 2bbba79e34
1 changed files with 69 additions and 0 deletions
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69
drivers/net/ethernet/realtek/rtase/rtase_main.c
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@ -571,6 +571,75 @@ static void rtase_hw_start(const struct net_device *dev)
rtase_enable_hw_interrupt(tp);
}
/* the interrupt handler does RXQ0 and TXQ0, TXQ4~7 interrutp status
*/
static irqreturn_t rtase_interrupt(int irq, void *dev_instance)
{
const struct rtase_private *tp;
struct rtase_int_vector *ivec;
u32 status;
ivec = dev_instance;
tp = ivec->tp;
status = rtase_r32(tp, ivec->isr_addr);
rtase_w32(tp, ivec->imr_addr, 0x0);
rtase_w32(tp, ivec->isr_addr, status & ~RTASE_FOVW);
if (napi_schedule_prep(&ivec->napi))
__napi_schedule(&ivec->napi);
return IRQ_HANDLED;
}
/* the interrupt handler does RXQ1&TXQ1 or RXQ2&TXQ2 or RXQ3&TXQ3 interrupt
* status according to interrupt vector
*/
static irqreturn_t rtase_q_interrupt(int irq, void *dev_instance)
{
const struct rtase_private *tp;
struct rtase_int_vector *ivec;
u16 status;
ivec = dev_instance;
tp = ivec->tp;
status = rtase_r16(tp, ivec->isr_addr);
rtase_w16(tp, ivec->imr_addr, 0x0);
rtase_w16(tp, ivec->isr_addr, status);
if (napi_schedule_prep(&ivec->napi))
__napi_schedule(&ivec->napi);
return IRQ_HANDLED;
}
static int rtase_poll(struct napi_struct *napi, int budget)
{
const struct rtase_int_vector *ivec;
const struct rtase_private *tp;
struct rtase_ring *ring;
int total_workdone = 0;
ivec = container_of(napi, struct rtase_int_vector, napi);
tp = ivec->tp;
list_for_each_entry(ring, &ivec->ring_list, ring_entry)
total_workdone += ring->ring_handler(ring, budget);
if (total_workdone >= budget)
return budget;
if (napi_complete_done(napi, total_workdone)) {
if (!ivec->index)
rtase_w32(tp, ivec->imr_addr, ivec->imr);
else
rtase_w16(tp, ivec->imr_addr, ivec->imr);
}
return total_workdone;
}
static int rtase_open(struct net_device *dev)
{
struct rtase_private *tp = netdev_priv(dev);