mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 23:12:32 +00:00
133 lines
4.1 KiB
Diff
133 lines
4.1 KiB
Diff
From: Felix Fietkau <nbd@nbd.name>
|
|
Date: Sun, 12 Apr 2015 23:28:38 +0200
|
|
Subject: [PATCH] bgmac: drop ring->num_slots
|
|
|
|
The ring size is always known at compile time, so make the code a bit
|
|
more efficient
|
|
|
|
Signed-off-by: Felix Fietkau <nbd@nbd.name>
|
|
---
|
|
|
|
--- a/drivers/net/ethernet/broadcom/bgmac.c
|
|
+++ b/drivers/net/ethernet/broadcom/bgmac.c
|
|
@@ -123,7 +123,7 @@ bgmac_dma_tx_add_buf(struct bgmac *bgmac
|
|
struct bgmac_dma_desc *dma_desc;
|
|
u32 ctl1;
|
|
|
|
- if (i == ring->num_slots - 1)
|
|
+ if (i == BGMAC_TX_RING_SLOTS - 1)
|
|
ctl0 |= BGMAC_DESC_CTL0_EOT;
|
|
|
|
ctl1 = len & BGMAC_DESC_CTL1_LEN;
|
|
@@ -382,7 +382,7 @@ static void bgmac_dma_rx_setup_desc(stru
|
|
struct bgmac_dma_desc *dma_desc = ring->cpu_base + desc_idx;
|
|
u32 ctl0 = 0, ctl1 = 0;
|
|
|
|
- if (desc_idx == ring->num_slots - 1)
|
|
+ if (desc_idx == BGMAC_RX_RING_SLOTS - 1)
|
|
ctl0 |= BGMAC_DESC_CTL0_EOT;
|
|
ctl1 |= BGMAC_RX_BUF_SIZE & BGMAC_DESC_CTL1_LEN;
|
|
/* Is there any BGMAC device that requires extension? */
|
|
@@ -521,7 +521,7 @@ static void bgmac_dma_tx_ring_free(struc
|
|
struct bgmac_slot_info *slot;
|
|
int i;
|
|
|
|
- for (i = 0; i < ring->num_slots; i++) {
|
|
+ for (i = 0; i < BGMAC_TX_RING_SLOTS; i++) {
|
|
int len = dma_desc[i].ctl1 & BGMAC_DESC_CTL1_LEN;
|
|
|
|
slot = &ring->slots[i];
|
|
@@ -546,7 +546,7 @@ static void bgmac_dma_rx_ring_free(struc
|
|
struct bgmac_slot_info *slot;
|
|
int i;
|
|
|
|
- for (i = 0; i < ring->num_slots; i++) {
|
|
+ for (i = 0; i < BGMAC_RX_RING_SLOTS; i++) {
|
|
slot = &ring->slots[i];
|
|
if (!slot->dma_addr)
|
|
continue;
|
|
@@ -560,7 +560,8 @@ static void bgmac_dma_rx_ring_free(struc
|
|
}
|
|
|
|
static void bgmac_dma_ring_desc_free(struct bgmac *bgmac,
|
|
- struct bgmac_dma_ring *ring)
|
|
+ struct bgmac_dma_ring *ring,
|
|
+ int num_slots)
|
|
{
|
|
struct device *dma_dev = bgmac->core->dma_dev;
|
|
int size;
|
|
@@ -569,7 +570,7 @@ static void bgmac_dma_ring_desc_free(str
|
|
return;
|
|
|
|
/* Free ring of descriptors */
|
|
- size = ring->num_slots * sizeof(struct bgmac_dma_desc);
|
|
+ size = num_slots * sizeof(struct bgmac_dma_desc);
|
|
dma_free_coherent(dma_dev, size, ring->cpu_base,
|
|
ring->dma_base);
|
|
}
|
|
@@ -590,10 +591,12 @@ static void bgmac_dma_free(struct bgmac
|
|
int i;
|
|
|
|
for (i = 0; i < BGMAC_MAX_TX_RINGS; i++)
|
|
- bgmac_dma_ring_desc_free(bgmac, &bgmac->tx_ring[i]);
|
|
+ bgmac_dma_ring_desc_free(bgmac, &bgmac->tx_ring[i],
|
|
+ BGMAC_TX_RING_SLOTS);
|
|
|
|
for (i = 0; i < BGMAC_MAX_RX_RINGS; i++)
|
|
- bgmac_dma_ring_desc_free(bgmac, &bgmac->rx_ring[i]);
|
|
+ bgmac_dma_ring_desc_free(bgmac, &bgmac->rx_ring[i],
|
|
+ BGMAC_RX_RING_SLOTS);
|
|
}
|
|
|
|
static int bgmac_dma_alloc(struct bgmac *bgmac)
|
|
@@ -616,11 +619,10 @@ static int bgmac_dma_alloc(struct bgmac
|
|
|
|
for (i = 0; i < BGMAC_MAX_TX_RINGS; i++) {
|
|
ring = &bgmac->tx_ring[i];
|
|
- ring->num_slots = BGMAC_TX_RING_SLOTS;
|
|
ring->mmio_base = ring_base[i];
|
|
|
|
/* Alloc ring of descriptors */
|
|
- size = ring->num_slots * sizeof(struct bgmac_dma_desc);
|
|
+ size = BGMAC_TX_RING_SLOTS * sizeof(struct bgmac_dma_desc);
|
|
ring->cpu_base = dma_zalloc_coherent(dma_dev, size,
|
|
&ring->dma_base,
|
|
GFP_KERNEL);
|
|
@@ -642,11 +644,10 @@ static int bgmac_dma_alloc(struct bgmac
|
|
|
|
for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) {
|
|
ring = &bgmac->rx_ring[i];
|
|
- ring->num_slots = BGMAC_RX_RING_SLOTS;
|
|
ring->mmio_base = ring_base[i];
|
|
|
|
/* Alloc ring of descriptors */
|
|
- size = ring->num_slots * sizeof(struct bgmac_dma_desc);
|
|
+ size = BGMAC_RX_RING_SLOTS * sizeof(struct bgmac_dma_desc);
|
|
ring->cpu_base = dma_zalloc_coherent(dma_dev, size,
|
|
&ring->dma_base,
|
|
GFP_KERNEL);
|
|
@@ -709,7 +710,7 @@ static int bgmac_dma_init(struct bgmac *
|
|
|
|
ring->start = 0;
|
|
ring->end = 0;
|
|
- for (j = 0; j < ring->num_slots; j++) {
|
|
+ for (j = 0; j < BGMAC_RX_RING_SLOTS; j++) {
|
|
err = bgmac_dma_rx_skb_for_slot(bgmac, &ring->slots[j]);
|
|
if (err)
|
|
goto error;
|
|
--- a/drivers/net/ethernet/broadcom/bgmac.h
|
|
+++ b/drivers/net/ethernet/broadcom/bgmac.h
|
|
@@ -419,11 +419,10 @@ struct bgmac_dma_ring {
|
|
u32 start;
|
|
u32 end;
|
|
|
|
- u16 num_slots;
|
|
- u16 mmio_base;
|
|
struct bgmac_dma_desc *cpu_base;
|
|
dma_addr_t dma_base;
|
|
u32 index_base; /* Used for unaligned rings only, otherwise 0 */
|
|
+ u16 mmio_base;
|
|
bool unaligned;
|
|
|
|
struct bgmac_slot_info slots[BGMAC_RX_RING_SLOTS];
|