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tsnep: Support multiple TX/RX queue pairs

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Support additional TX/RX queue pairs if dedicated interrupt is
available. Interrupts are detected by name in device tree.

Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gerhard Engleder 2022-09-27 21:58:40 +02:00 committed by David S. Miller
parent 58eaa8abe4
commit 762031375d
3 changed files with 53 additions and 11 deletions
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2
drivers/net/ethernet/engleder/tsnep.h
View File

@ -21,8 +21,6 @@
#define TSNEP_RING_ENTRIES_PER_PAGE (PAGE_SIZE / TSNEP_DESC_SIZE)
#define TSNEP_RING_PAGE_COUNT (TSNEP_RING_SIZE / TSNEP_RING_ENTRIES_PER_PAGE)
#define TSNEP_QUEUES 1
struct tsnep_gcl {
void __iomem *addr;

1
drivers/net/ethernet/engleder/tsnep_hw.h
View File

@ -34,6 +34,7 @@
#define ECM_INT_LINK 0x00000020
#define ECM_INT_TX_0 0x00000100
#define ECM_INT_RX_0 0x00000200
#define ECM_INT_TXRX_SHIFT 2
#define ECM_INT_ALL 0x7FFFFFFF
#define ECM_INT_DISABLE 0x80000000

61
drivers/net/ethernet/engleder/tsnep_main.c
View File

@ -1265,6 +1265,52 @@ static int tsnep_phy_init(struct tsnep_adapter *adapter)
return 0;
}
static int tsnep_queue_init(struct tsnep_adapter *adapter, int queue_count)
{
u32 irq_mask = ECM_INT_TX_0 | ECM_INT_RX_0;
char name[8];
int i;
int retval;
/* one TX/RX queue pair for netdev is mandatory */
if (platform_irq_count(adapter->pdev) == 1)
retval = platform_get_irq(adapter->pdev, 0);
else
retval = platform_get_irq_byname(adapter->pdev, "mac");
if (retval < 0)
return retval;
adapter->num_tx_queues = 1;
adapter->num_rx_queues = 1;
adapter->num_queues = 1;
adapter->queue[0].irq = retval;
adapter->queue[0].tx = &adapter->tx[0];
adapter->queue[0].rx = &adapter->rx[0];
adapter->queue[0].irq_mask = irq_mask;
adapter->netdev->irq = adapter->queue[0].irq;
/* add additional TX/RX queue pairs only if dedicated interrupt is
* available
*/
for (i = 1; i < queue_count; i++) {
sprintf(name, "txrx-%d", i);
retval = platform_get_irq_byname_optional(adapter->pdev, name);
if (retval < 0)
break;
adapter->num_tx_queues++;
adapter->num_rx_queues++;
adapter->num_queues++;
adapter->queue[i].irq = retval;
adapter->queue[i].tx = &adapter->tx[i];
adapter->queue[i].rx = &adapter->rx[i];
adapter->queue[i].irq_mask =
irq_mask << (ECM_INT_TXRX_SHIFT * i);
}
return 0;
}
static int tsnep_probe(struct platform_device *pdev)
{
struct tsnep_adapter *adapter;
@ -1273,6 +1319,7 @@ static int tsnep_probe(struct platform_device *pdev)
u32 type;
int revision;
int version;
int queue_count;
int retval;
netdev = devm_alloc_etherdev_mqs(&pdev->dev,
@ -1305,19 +1352,15 @@ static int tsnep_probe(struct platform_device *pdev)
type = ioread32(adapter->addr + ECM_TYPE);
revision = (type & ECM_REVISION_MASK) >> ECM_REVISION_SHIFT;
version = (type & ECM_VERSION_MASK) >> ECM_VERSION_SHIFT;
queue_count = (type & ECM_QUEUE_COUNT_MASK) >> ECM_QUEUE_COUNT_SHIFT;
adapter->gate_control = type & ECM_GATE_CONTROL;
adapter->num_tx_queues = TSNEP_QUEUES;
adapter->num_rx_queues = TSNEP_QUEUES;
adapter->num_queues = TSNEP_QUEUES;
adapter->queue[0].irq = platform_get_irq(pdev, 0);
adapter->queue[0].tx = &adapter->tx[0];
adapter->queue[0].rx = &adapter->rx[0];
adapter->queue[0].irq_mask = ECM_INT_TX_0 | ECM_INT_RX_0;
netdev->irq = adapter->queue[0].irq;
tsnep_disable_irq(adapter, ECM_INT_ALL);
retval = tsnep_queue_init(adapter, queue_count);
if (retval)
return retval;
retval = dma_set_mask_and_coherent(&adapter->pdev->dev,
DMA_BIT_MASK(64));
if (retval) {