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authorVeena Parat <Veena.Parat@neterion.com>2007-07-23 02:20:51 -0400
committerJeff Garzik <jeff@garzik.org>2007-07-30 15:56:03 -0400
commit6d517a27d5b376c769f48213044b658042b5f07a (patch)
treec77c169c3edf4eef67dc465145a02b060356d6c0 /drivers/net
parent2c6a3f72688acbc640b3be8083dac0e90354f0cf (diff)
S2IO: Removing 3 buffer mode support from the driver
- Removed 3 buffer mode support from driver - unused feature - Incorporated Jeff Garzik's comments on elimination of inline typecasting - Code cleanup : Removed a few extra spaces Signed-off-by: Veena Parat <veena.parat@neterion.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/s2io.c287
-rw-r--r--drivers/net/s2io.h3
2 files changed, 73 insertions, 217 deletions
diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index afef6c0c59fe..6bfb191634e7 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -32,7 +32,7 @@
32 * rx_ring_sz: This defines the number of receive blocks each ring can have. 32 * rx_ring_sz: This defines the number of receive blocks each ring can have.
33 * This is also an array of size 8. 33 * This is also an array of size 8.
34 * rx_ring_mode: This defines the operation mode of all 8 rings. The valid 34 * rx_ring_mode: This defines the operation mode of all 8 rings. The valid
35 * values are 1, 2 and 3. 35 * values are 1, 2.
36 * tx_fifo_num: This defines the number of Tx FIFOs thats used int the driver. 36 * tx_fifo_num: This defines the number of Tx FIFOs thats used int the driver.
37 * tx_fifo_len: This too is an array of 8. Each element defines the number of 37 * tx_fifo_len: This too is an array of 8. Each element defines the number of
38 * Tx descriptors that can be associated with each corresponding FIFO. 38 * Tx descriptors that can be associated with each corresponding FIFO.
@@ -90,8 +90,8 @@
90static char s2io_driver_name[] = "Neterion"; 90static char s2io_driver_name[] = "Neterion";
91static char s2io_driver_version[] = DRV_VERSION; 91static char s2io_driver_version[] = DRV_VERSION;
92 92
93static int rxd_size[4] = {32,48,48,64}; 93static int rxd_size[2] = {32,48};
94static int rxd_count[4] = {127,85,85,63}; 94static int rxd_count[2] = {127,85};
95 95
96static inline int RXD_IS_UP2DT(struct RxD_t *rxdp) 96static inline int RXD_IS_UP2DT(struct RxD_t *rxdp)
97{ 97{
@@ -701,7 +701,7 @@ static int init_shared_mem(struct s2io_nic *nic)
701 (u64) tmp_p_addr_next; 701 (u64) tmp_p_addr_next;
702 } 702 }
703 } 703 }
704 if (nic->rxd_mode >= RXD_MODE_3A) { 704 if (nic->rxd_mode == RXD_MODE_3B) {
705 /* 705 /*
706 * Allocation of Storages for buffer addresses in 2BUFF mode 706 * Allocation of Storages for buffer addresses in 2BUFF mode
707 * and the buffers as well. 707 * and the buffers as well.
@@ -870,7 +870,7 @@ static void free_shared_mem(struct s2io_nic *nic)
870 } 870 }
871 } 871 }
872 872
873 if (nic->rxd_mode >= RXD_MODE_3A) { 873 if (nic->rxd_mode == RXD_MODE_3B) {
874 /* Freeing buffer storage addresses in 2BUFF mode. */ 874 /* Freeing buffer storage addresses in 2BUFF mode. */
875 for (i = 0; i < config->rx_ring_num; i++) { 875 for (i = 0; i < config->rx_ring_num; i++) {
876 blk_cnt = config->rx_cfg[i].num_rxd / 876 blk_cnt = config->rx_cfg[i].num_rxd /
@@ -2233,44 +2233,6 @@ static void stop_nic(struct s2io_nic *nic)
2233 writeq(val64, &bar0->adapter_control); 2233 writeq(val64, &bar0->adapter_control);
2234} 2234}
2235 2235
2236static int fill_rxd_3buf(struct s2io_nic *nic, struct RxD_t *rxdp, struct \
2237 sk_buff *skb)
2238{
2239 struct net_device *dev = nic->dev;
2240 struct sk_buff *frag_list;
2241 void *tmp;
2242
2243 /* Buffer-1 receives L3/L4 headers */
2244 ((struct RxD3*)rxdp)->Buffer1_ptr = pci_map_single
2245 (nic->pdev, skb->data, l3l4hdr_size + 4,
2246 PCI_DMA_FROMDEVICE);
2247
2248 /* skb_shinfo(skb)->frag_list will have L4 data payload */
2249 skb_shinfo(skb)->frag_list = dev_alloc_skb(dev->mtu + ALIGN_SIZE);
2250 if (skb_shinfo(skb)->frag_list == NULL) {
2251 nic->mac_control.stats_info->sw_stat.mem_alloc_fail_cnt++;
2252 DBG_PRINT(INFO_DBG, "%s: dev_alloc_skb failed\n ", dev->name);
2253 return -ENOMEM ;
2254 }
2255 frag_list = skb_shinfo(skb)->frag_list;
2256 skb->truesize += frag_list->truesize;
2257 nic->mac_control.stats_info->sw_stat.mem_allocated
2258 += frag_list->truesize;
2259 frag_list->next = NULL;
2260 tmp = (void *)ALIGN((long)frag_list->data, ALIGN_SIZE + 1);
2261 frag_list->data = tmp;
2262 skb_reset_tail_pointer(frag_list);
2263
2264 /* Buffer-2 receives L4 data payload */
2265 ((struct RxD3*)rxdp)->Buffer2_ptr = pci_map_single(nic->pdev,
2266 frag_list->data, dev->mtu,
2267 PCI_DMA_FROMDEVICE);
2268 rxdp->Control_2 |= SET_BUFFER1_SIZE_3(l3l4hdr_size + 4);
2269 rxdp->Control_2 |= SET_BUFFER2_SIZE_3(dev->mtu);
2270
2271 return SUCCESS;
2272}
2273
2274/** 2236/**
2275 * fill_rx_buffers - Allocates the Rx side skbs 2237 * fill_rx_buffers - Allocates the Rx side skbs
2276 * @nic: device private variable 2238 * @nic: device private variable
@@ -2307,6 +2269,8 @@ static int fill_rx_buffers(struct s2io_nic *nic, int ring_no)
2307 unsigned long flags; 2269 unsigned long flags;
2308 struct RxD_t *first_rxdp = NULL; 2270 struct RxD_t *first_rxdp = NULL;
2309 u64 Buffer0_ptr = 0, Buffer1_ptr = 0; 2271 u64 Buffer0_ptr = 0, Buffer1_ptr = 0;
2272 struct RxD1 *rxdp1;
2273 struct RxD3 *rxdp3;
2310 2274
2311 mac_control = &nic->mac_control; 2275 mac_control = &nic->mac_control;
2312 config = &nic->config; 2276 config = &nic->config;
@@ -2359,7 +2323,7 @@ static int fill_rx_buffers(struct s2io_nic *nic, int ring_no)
2359 (block_no * (rxd_count[nic->rxd_mode] + 1)) + off; 2323 (block_no * (rxd_count[nic->rxd_mode] + 1)) + off;
2360 } 2324 }
2361 if ((rxdp->Control_1 & RXD_OWN_XENA) && 2325 if ((rxdp->Control_1 & RXD_OWN_XENA) &&
2362 ((nic->rxd_mode >= RXD_MODE_3A) && 2326 ((nic->rxd_mode == RXD_MODE_3B) &&
2363 (rxdp->Control_2 & BIT(0)))) { 2327 (rxdp->Control_2 & BIT(0)))) {
2364 mac_control->rings[ring_no].rx_curr_put_info. 2328 mac_control->rings[ring_no].rx_curr_put_info.
2365 offset = off; 2329 offset = off;
@@ -2370,10 +2334,8 @@ static int fill_rx_buffers(struct s2io_nic *nic, int ring_no)
2370 HEADER_802_2_SIZE + HEADER_SNAP_SIZE; 2334 HEADER_802_2_SIZE + HEADER_SNAP_SIZE;
2371 if (nic->rxd_mode == RXD_MODE_1) 2335 if (nic->rxd_mode == RXD_MODE_1)
2372 size += NET_IP_ALIGN; 2336 size += NET_IP_ALIGN;
2373 else if (nic->rxd_mode == RXD_MODE_3B)
2374 size = dev->mtu + ALIGN_SIZE + BUF0_LEN + 4;
2375 else 2337 else
2376 size = l3l4hdr_size + ALIGN_SIZE + BUF0_LEN + 4; 2338 size = dev->mtu + ALIGN_SIZE + BUF0_LEN + 4;
2377 2339
2378 /* allocate skb */ 2340 /* allocate skb */
2379 skb = dev_alloc_skb(size); 2341 skb = dev_alloc_skb(size);
@@ -2392,33 +2354,30 @@ static int fill_rx_buffers(struct s2io_nic *nic, int ring_no)
2392 += skb->truesize; 2354 += skb->truesize;
2393 if (nic->rxd_mode == RXD_MODE_1) { 2355 if (nic->rxd_mode == RXD_MODE_1) {
2394 /* 1 buffer mode - normal operation mode */ 2356 /* 1 buffer mode - normal operation mode */
2357 rxdp1 = (struct RxD1*)rxdp;
2395 memset(rxdp, 0, sizeof(struct RxD1)); 2358 memset(rxdp, 0, sizeof(struct RxD1));
2396 skb_reserve(skb, NET_IP_ALIGN); 2359 skb_reserve(skb, NET_IP_ALIGN);
2397 ((struct RxD1*)rxdp)->Buffer0_ptr = pci_map_single 2360 rxdp1->Buffer0_ptr = pci_map_single
2398 (nic->pdev, skb->data, size - NET_IP_ALIGN, 2361 (nic->pdev, skb->data, size - NET_IP_ALIGN,
2399 PCI_DMA_FROMDEVICE); 2362 PCI_DMA_FROMDEVICE);
2400 rxdp->Control_2 = 2363 rxdp->Control_2 =
2401 SET_BUFFER0_SIZE_1(size - NET_IP_ALIGN); 2364 SET_BUFFER0_SIZE_1(size - NET_IP_ALIGN);
2402 2365
2403 } else if (nic->rxd_mode >= RXD_MODE_3A) { 2366 } else if (nic->rxd_mode == RXD_MODE_3B) {
2404 /* 2367 /*
2405 * 2 or 3 buffer mode - 2368 * 2 buffer mode -
2406 * Both 2 buffer mode and 3 buffer mode provides 128 2369 * 2 buffer mode provides 128
2407 * byte aligned receive buffers. 2370 * byte aligned receive buffers.
2408 *
2409 * 3 buffer mode provides header separation where in
2410 * skb->data will have L3/L4 headers where as
2411 * skb_shinfo(skb)->frag_list will have the L4 data
2412 * payload
2413 */ 2371 */
2414 2372
2373 rxdp3 = (struct RxD3*)rxdp;
2415 /* save buffer pointers to avoid frequent dma mapping */ 2374 /* save buffer pointers to avoid frequent dma mapping */
2416 Buffer0_ptr = ((struct RxD3*)rxdp)->Buffer0_ptr; 2375 Buffer0_ptr = rxdp3->Buffer0_ptr;
2417 Buffer1_ptr = ((struct RxD3*)rxdp)->Buffer1_ptr; 2376 Buffer1_ptr = rxdp3->Buffer1_ptr;
2418 memset(rxdp, 0, sizeof(struct RxD3)); 2377 memset(rxdp, 0, sizeof(struct RxD3));
2419 /* restore the buffer pointers for dma sync*/ 2378 /* restore the buffer pointers for dma sync*/
2420 ((struct RxD3*)rxdp)->Buffer0_ptr = Buffer0_ptr; 2379 rxdp3->Buffer0_ptr = Buffer0_ptr;
2421 ((struct RxD3*)rxdp)->Buffer1_ptr = Buffer1_ptr; 2380 rxdp3->Buffer1_ptr = Buffer1_ptr;
2422 2381
2423 ba = &mac_control->rings[ring_no].ba[block_no][off]; 2382 ba = &mac_control->rings[ring_no].ba[block_no][off];
2424 skb_reserve(skb, BUF0_LEN); 2383 skb_reserve(skb, BUF0_LEN);
@@ -2428,13 +2387,13 @@ static int fill_rx_buffers(struct s2io_nic *nic, int ring_no)
2428 skb->data = (void *) (unsigned long)tmp; 2387 skb->data = (void *) (unsigned long)tmp;
2429 skb_reset_tail_pointer(skb); 2388 skb_reset_tail_pointer(skb);
2430 2389
2431 if (!(((struct RxD3*)rxdp)->Buffer0_ptr)) 2390 if (!(rxdp3->Buffer0_ptr))
2432 ((struct RxD3*)rxdp)->Buffer0_ptr = 2391 rxdp3->Buffer0_ptr =
2433 pci_map_single(nic->pdev, ba->ba_0, BUF0_LEN, 2392 pci_map_single(nic->pdev, ba->ba_0, BUF0_LEN,
2434 PCI_DMA_FROMDEVICE); 2393 PCI_DMA_FROMDEVICE);
2435 else 2394 else
2436 pci_dma_sync_single_for_device(nic->pdev, 2395 pci_dma_sync_single_for_device(nic->pdev,
2437 (dma_addr_t) ((struct RxD3*)rxdp)->Buffer0_ptr, 2396 (dma_addr_t) rxdp3->Buffer0_ptr,
2438 BUF0_LEN, PCI_DMA_FROMDEVICE); 2397 BUF0_LEN, PCI_DMA_FROMDEVICE);
2439 rxdp->Control_2 = SET_BUFFER0_SIZE_3(BUF0_LEN); 2398 rxdp->Control_2 = SET_BUFFER0_SIZE_3(BUF0_LEN);
2440 if (nic->rxd_mode == RXD_MODE_3B) { 2399 if (nic->rxd_mode == RXD_MODE_3B) {
@@ -2444,13 +2403,13 @@ static int fill_rx_buffers(struct s2io_nic *nic, int ring_no)
2444 * Buffer2 will have L3/L4 header plus 2403 * Buffer2 will have L3/L4 header plus
2445 * L4 payload 2404 * L4 payload
2446 */ 2405 */
2447 ((struct RxD3*)rxdp)->Buffer2_ptr = pci_map_single 2406 rxdp3->Buffer2_ptr = pci_map_single
2448 (nic->pdev, skb->data, dev->mtu + 4, 2407 (nic->pdev, skb->data, dev->mtu + 4,
2449 PCI_DMA_FROMDEVICE); 2408 PCI_DMA_FROMDEVICE);
2450 2409
2451 /* Buffer-1 will be dummy buffer. Not used */ 2410 /* Buffer-1 will be dummy buffer. Not used */
2452 if (!(((struct RxD3*)rxdp)->Buffer1_ptr)) { 2411 if (!(rxdp3->Buffer1_ptr)) {
2453 ((struct RxD3*)rxdp)->Buffer1_ptr = 2412 rxdp3->Buffer1_ptr =
2454 pci_map_single(nic->pdev, 2413 pci_map_single(nic->pdev,
2455 ba->ba_1, BUF1_LEN, 2414 ba->ba_1, BUF1_LEN,
2456 PCI_DMA_FROMDEVICE); 2415 PCI_DMA_FROMDEVICE);
@@ -2458,19 +2417,6 @@ static int fill_rx_buffers(struct s2io_nic *nic, int ring_no)
2458 rxdp->Control_2 |= SET_BUFFER1_SIZE_3(1); 2417 rxdp->Control_2 |= SET_BUFFER1_SIZE_3(1);
2459 rxdp->Control_2 |= SET_BUFFER2_SIZE_3 2418 rxdp->Control_2 |= SET_BUFFER2_SIZE_3
2460 (dev->mtu + 4); 2419 (dev->mtu + 4);
2461 } else {
2462 /* 3 buffer mode */
2463 if (fill_rxd_3buf(nic, rxdp, skb) == -ENOMEM) {
2464 nic->mac_control.stats_info->sw_stat.\
2465 mem_freed += skb->truesize;
2466 dev_kfree_skb_irq(skb);
2467 if (first_rxdp) {
2468 wmb();
2469 first_rxdp->Control_1 |=
2470 RXD_OWN_XENA;
2471 }
2472 return -ENOMEM ;
2473 }
2474 } 2420 }
2475 rxdp->Control_2 |= BIT(0); 2421 rxdp->Control_2 |= BIT(0);
2476 } 2422 }
@@ -2515,6 +2461,8 @@ static void free_rxd_blk(struct s2io_nic *sp, int ring_no, int blk)
2515 struct RxD_t *rxdp; 2461 struct RxD_t *rxdp;
2516 struct mac_info *mac_control; 2462 struct mac_info *mac_control;
2517 struct buffAdd *ba; 2463 struct buffAdd *ba;
2464 struct RxD1 *rxdp1;
2465 struct RxD3 *rxdp3;
2518 2466
2519 mac_control = &sp->mac_control; 2467 mac_control = &sp->mac_control;
2520 for (j = 0 ; j < rxd_count[sp->rxd_mode]; j++) { 2468 for (j = 0 ; j < rxd_count[sp->rxd_mode]; j++) {
@@ -2526,40 +2474,30 @@ static void free_rxd_blk(struct s2io_nic *sp, int ring_no, int blk)
2526 continue; 2474 continue;
2527 } 2475 }
2528 if (sp->rxd_mode == RXD_MODE_1) { 2476 if (sp->rxd_mode == RXD_MODE_1) {
2477 rxdp1 = (struct RxD1*)rxdp;
2529 pci_unmap_single(sp->pdev, (dma_addr_t) 2478 pci_unmap_single(sp->pdev, (dma_addr_t)
2530 ((struct RxD1*)rxdp)->Buffer0_ptr, 2479 rxdp1->Buffer0_ptr,
2531 dev->mtu + 2480 dev->mtu +
2532 HEADER_ETHERNET_II_802_3_SIZE 2481 HEADER_ETHERNET_II_802_3_SIZE
2533 + HEADER_802_2_SIZE + 2482 + HEADER_802_2_SIZE +
2534 HEADER_SNAP_SIZE, 2483 HEADER_SNAP_SIZE,
2535 PCI_DMA_FROMDEVICE); 2484 PCI_DMA_FROMDEVICE);
2536 memset(rxdp, 0, sizeof(struct RxD1)); 2485 memset(rxdp, 0, sizeof(struct RxD1));
2537 } else if(sp->rxd_mode == RXD_MODE_3B) { 2486 } else if(sp->rxd_mode == RXD_MODE_3B) {
2487 rxdp3 = (struct RxD3*)rxdp;
2538 ba = &mac_control->rings[ring_no]. 2488 ba = &mac_control->rings[ring_no].
2539 ba[blk][j]; 2489 ba[blk][j];
2540 pci_unmap_single(sp->pdev, (dma_addr_t) 2490 pci_unmap_single(sp->pdev, (dma_addr_t)
2541 ((struct RxD3*)rxdp)->Buffer0_ptr, 2491 rxdp3->Buffer0_ptr,
2542 BUF0_LEN, 2492 BUF0_LEN,
2543 PCI_DMA_FROMDEVICE);
2544 pci_unmap_single(sp->pdev, (dma_addr_t)
2545 ((struct RxD3*)rxdp)->Buffer1_ptr,
2546 BUF1_LEN,
2547 PCI_DMA_FROMDEVICE);
2548 pci_unmap_single(sp->pdev, (dma_addr_t)
2549 ((struct RxD3*)rxdp)->Buffer2_ptr,
2550 dev->mtu + 4,
2551 PCI_DMA_FROMDEVICE);
2552 memset(rxdp, 0, sizeof(struct RxD3));
2553 } else {
2554 pci_unmap_single(sp->pdev, (dma_addr_t)
2555 ((struct RxD3*)rxdp)->Buffer0_ptr, BUF0_LEN,
2556 PCI_DMA_FROMDEVICE); 2493 PCI_DMA_FROMDEVICE);
2557 pci_unmap_single(sp->pdev, (dma_addr_t) 2494 pci_unmap_single(sp->pdev, (dma_addr_t)
2558 ((struct RxD3*)rxdp)->Buffer1_ptr, 2495 rxdp3->Buffer1_ptr,
2559 l3l4hdr_size + 4, 2496 BUF1_LEN,
2560 PCI_DMA_FROMDEVICE); 2497 PCI_DMA_FROMDEVICE);
2561 pci_unmap_single(sp->pdev, (dma_addr_t) 2498 pci_unmap_single(sp->pdev, (dma_addr_t)
2562 ((struct RxD3*)rxdp)->Buffer2_ptr, dev->mtu, 2499 rxdp3->Buffer2_ptr,
2500 dev->mtu + 4,
2563 PCI_DMA_FROMDEVICE); 2501 PCI_DMA_FROMDEVICE);
2564 memset(rxdp, 0, sizeof(struct RxD3)); 2502 memset(rxdp, 0, sizeof(struct RxD3));
2565 } 2503 }
@@ -2756,6 +2694,8 @@ static void rx_intr_handler(struct ring_info *ring_data)
2756 struct sk_buff *skb; 2694 struct sk_buff *skb;
2757 int pkt_cnt = 0; 2695 int pkt_cnt = 0;
2758 int i; 2696 int i;
2697 struct RxD1* rxdp1;
2698 struct RxD3* rxdp3;
2759 2699
2760 spin_lock(&nic->rx_lock); 2700 spin_lock(&nic->rx_lock);
2761 if (atomic_read(&nic->card_state) == CARD_DOWN) { 2701 if (atomic_read(&nic->card_state) == CARD_DOWN) {
@@ -2796,32 +2736,23 @@ static void rx_intr_handler(struct ring_info *ring_data)
2796 return; 2736 return;
2797 } 2737 }
2798 if (nic->rxd_mode == RXD_MODE_1) { 2738 if (nic->rxd_mode == RXD_MODE_1) {
2739 rxdp1 = (struct RxD1*)rxdp;
2799 pci_unmap_single(nic->pdev, (dma_addr_t) 2740 pci_unmap_single(nic->pdev, (dma_addr_t)
2800 ((struct RxD1*)rxdp)->Buffer0_ptr, 2741 rxdp1->Buffer0_ptr,
2801 dev->mtu + 2742 dev->mtu +
2802 HEADER_ETHERNET_II_802_3_SIZE + 2743 HEADER_ETHERNET_II_802_3_SIZE +
2803 HEADER_802_2_SIZE + 2744 HEADER_802_2_SIZE +
2804 HEADER_SNAP_SIZE, 2745 HEADER_SNAP_SIZE,
2805 PCI_DMA_FROMDEVICE); 2746 PCI_DMA_FROMDEVICE);
2806 } else if (nic->rxd_mode == RXD_MODE_3B) { 2747 } else if (nic->rxd_mode == RXD_MODE_3B) {
2748 rxdp3 = (struct RxD3*)rxdp;
2807 pci_dma_sync_single_for_cpu(nic->pdev, (dma_addr_t) 2749 pci_dma_sync_single_for_cpu(nic->pdev, (dma_addr_t)
2808 ((struct RxD3*)rxdp)->Buffer0_ptr, 2750 rxdp3->Buffer0_ptr,
2809 BUF0_LEN, PCI_DMA_FROMDEVICE); 2751 BUF0_LEN, PCI_DMA_FROMDEVICE);
2810 pci_unmap_single(nic->pdev, (dma_addr_t)
2811 ((struct RxD3*)rxdp)->Buffer2_ptr,
2812 dev->mtu + 4,
2813 PCI_DMA_FROMDEVICE);
2814 } else {
2815 pci_dma_sync_single_for_cpu(nic->pdev, (dma_addr_t)
2816 ((struct RxD3*)rxdp)->Buffer0_ptr, BUF0_LEN,
2817 PCI_DMA_FROMDEVICE);
2818 pci_unmap_single(nic->pdev, (dma_addr_t)
2819 ((struct RxD3*)rxdp)->Buffer1_ptr,
2820 l3l4hdr_size + 4,
2821 PCI_DMA_FROMDEVICE);
2822 pci_unmap_single(nic->pdev, (dma_addr_t) 2752 pci_unmap_single(nic->pdev, (dma_addr_t)
2823 ((struct RxD3*)rxdp)->Buffer2_ptr, 2753 rxdp3->Buffer2_ptr,
2824 dev->mtu, PCI_DMA_FROMDEVICE); 2754 dev->mtu + 4,
2755 PCI_DMA_FROMDEVICE);
2825 } 2756 }
2826 prefetch(skb->data); 2757 prefetch(skb->data);
2827 rx_osm_handler(ring_data, rxdp); 2758 rx_osm_handler(ring_data, rxdp);
@@ -4927,8 +4858,6 @@ static void s2io_ethtool_gringparam(struct net_device *dev,
4927 ering->rx_max_pending = MAX_RX_DESC_1; 4858 ering->rx_max_pending = MAX_RX_DESC_1;
4928 else if (sp->rxd_mode == RXD_MODE_3B) 4859 else if (sp->rxd_mode == RXD_MODE_3B)
4929 ering->rx_max_pending = MAX_RX_DESC_2; 4860 ering->rx_max_pending = MAX_RX_DESC_2;
4930 else if (sp->rxd_mode == RXD_MODE_3A)
4931 ering->rx_max_pending = MAX_RX_DESC_3;
4932 4861
4933 ering->tx_max_pending = MAX_TX_DESC; 4862 ering->tx_max_pending = MAX_TX_DESC;
4934 for (i = 0 ; i < sp->config.tx_fifo_num ; i++) { 4863 for (i = 0 ; i < sp->config.tx_fifo_num ; i++) {
@@ -6266,9 +6195,9 @@ static int set_rxd_buffer_pointer(struct s2io_nic *sp, struct RxD_t *rxdp,
6266 u64 *temp2, int size) 6195 u64 *temp2, int size)
6267{ 6196{
6268 struct net_device *dev = sp->dev; 6197 struct net_device *dev = sp->dev;
6269 struct sk_buff *frag_list;
6270 6198
6271 if ((sp->rxd_mode == RXD_MODE_1) && (rxdp->Host_Control == 0)) { 6199 if ((sp->rxd_mode == RXD_MODE_1) && (rxdp->Host_Control == 0)) {
6200 struct RxD1 *rxdp1 = (struct RxD1 *)rxdp;
6272 /* allocate skb */ 6201 /* allocate skb */
6273 if (*skb) { 6202 if (*skb) {
6274 DBG_PRINT(INFO_DBG, "SKB is not NULL\n"); 6203 DBG_PRINT(INFO_DBG, "SKB is not NULL\n");
@@ -6277,7 +6206,7 @@ static int set_rxd_buffer_pointer(struct s2io_nic *sp, struct RxD_t *rxdp,
6277 * using same mapped address for the Rxd 6206 * using same mapped address for the Rxd
6278 * buffer pointer 6207 * buffer pointer
6279 */ 6208 */
6280 ((struct RxD1*)rxdp)->Buffer0_ptr = *temp0; 6209 rxdp1->Buffer0_ptr = *temp0;
6281 } else { 6210 } else {
6282 *skb = dev_alloc_skb(size); 6211 *skb = dev_alloc_skb(size);
6283 if (!(*skb)) { 6212 if (!(*skb)) {
@@ -6294,18 +6223,19 @@ static int set_rxd_buffer_pointer(struct s2io_nic *sp, struct RxD_t *rxdp,
6294 * such it will be used for next rxd whose 6223 * such it will be used for next rxd whose
6295 * Host Control is NULL 6224 * Host Control is NULL
6296 */ 6225 */
6297 ((struct RxD1*)rxdp)->Buffer0_ptr = *temp0 = 6226 rxdp1->Buffer0_ptr = *temp0 =
6298 pci_map_single( sp->pdev, (*skb)->data, 6227 pci_map_single( sp->pdev, (*skb)->data,
6299 size - NET_IP_ALIGN, 6228 size - NET_IP_ALIGN,
6300 PCI_DMA_FROMDEVICE); 6229 PCI_DMA_FROMDEVICE);
6301 rxdp->Host_Control = (unsigned long) (*skb); 6230 rxdp->Host_Control = (unsigned long) (*skb);
6302 } 6231 }
6303 } else if ((sp->rxd_mode == RXD_MODE_3B) && (rxdp->Host_Control == 0)) { 6232 } else if ((sp->rxd_mode == RXD_MODE_3B) && (rxdp->Host_Control == 0)) {
6233 struct RxD3 *rxdp3 = (struct RxD3 *)rxdp;
6304 /* Two buffer Mode */ 6234 /* Two buffer Mode */
6305 if (*skb) { 6235 if (*skb) {
6306 ((struct RxD3*)rxdp)->Buffer2_ptr = *temp2; 6236 rxdp3->Buffer2_ptr = *temp2;
6307 ((struct RxD3*)rxdp)->Buffer0_ptr = *temp0; 6237 rxdp3->Buffer0_ptr = *temp0;
6308 ((struct RxD3*)rxdp)->Buffer1_ptr = *temp1; 6238 rxdp3->Buffer1_ptr = *temp1;
6309 } else { 6239 } else {
6310 *skb = dev_alloc_skb(size); 6240 *skb = dev_alloc_skb(size);
6311 if (!(*skb)) { 6241 if (!(*skb)) {
@@ -6318,69 +6248,19 @@ static int set_rxd_buffer_pointer(struct s2io_nic *sp, struct RxD_t *rxdp,
6318 } 6248 }
6319 sp->mac_control.stats_info->sw_stat.mem_allocated 6249 sp->mac_control.stats_info->sw_stat.mem_allocated
6320 += (*skb)->truesize; 6250 += (*skb)->truesize;
6321 ((struct RxD3*)rxdp)->Buffer2_ptr = *temp2 = 6251 rxdp3->Buffer2_ptr = *temp2 =
6322 pci_map_single(sp->pdev, (*skb)->data, 6252 pci_map_single(sp->pdev, (*skb)->data,
6323 dev->mtu + 4, 6253 dev->mtu + 4,
6324 PCI_DMA_FROMDEVICE); 6254 PCI_DMA_FROMDEVICE);
6325 ((struct RxD3*)rxdp)->Buffer0_ptr = *temp0 = 6255 rxdp3->Buffer0_ptr = *temp0 =
6326 pci_map_single( sp->pdev, ba->ba_0, BUF0_LEN, 6256 pci_map_single( sp->pdev, ba->ba_0, BUF0_LEN,
6327 PCI_DMA_FROMDEVICE); 6257 PCI_DMA_FROMDEVICE);
6328 rxdp->Host_Control = (unsigned long) (*skb); 6258 rxdp->Host_Control = (unsigned long) (*skb);
6329 6259
6330 /* Buffer-1 will be dummy buffer not used */ 6260 /* Buffer-1 will be dummy buffer not used */
6331 ((struct RxD3*)rxdp)->Buffer1_ptr = *temp1 = 6261 rxdp3->Buffer1_ptr = *temp1 =
6332 pci_map_single(sp->pdev, ba->ba_1, BUF1_LEN, 6262 pci_map_single(sp->pdev, ba->ba_1, BUF1_LEN,
6333 PCI_DMA_FROMDEVICE);
6334 }
6335 } else if ((rxdp->Host_Control == 0)) {
6336 /* Three buffer mode */
6337 if (*skb) {
6338 ((struct RxD3*)rxdp)->Buffer0_ptr = *temp0;
6339 ((struct RxD3*)rxdp)->Buffer1_ptr = *temp1;
6340 ((struct RxD3*)rxdp)->Buffer2_ptr = *temp2;
6341 } else {
6342 *skb = dev_alloc_skb(size);
6343 if (!(*skb)) {
6344 DBG_PRINT(INFO_DBG, "%s: Out of ", dev->name);
6345 DBG_PRINT(INFO_DBG, "memory to allocate ");
6346 DBG_PRINT(INFO_DBG, "3 buf mode SKBs\n");
6347 sp->mac_control.stats_info->sw_stat. \
6348 mem_alloc_fail_cnt++;
6349 return -ENOMEM;
6350 }
6351 sp->mac_control.stats_info->sw_stat.mem_allocated
6352 += (*skb)->truesize;
6353 ((struct RxD3*)rxdp)->Buffer0_ptr = *temp0 =
6354 pci_map_single(sp->pdev, ba->ba_0, BUF0_LEN,
6355 PCI_DMA_FROMDEVICE);
6356 /* Buffer-1 receives L3/L4 headers */
6357 ((struct RxD3*)rxdp)->Buffer1_ptr = *temp1 =
6358 pci_map_single( sp->pdev, (*skb)->data,
6359 l3l4hdr_size + 4,
6360 PCI_DMA_FROMDEVICE); 6263 PCI_DMA_FROMDEVICE);
6361 /*
6362 * skb_shinfo(skb)->frag_list will have L4
6363 * data payload
6364 */
6365 skb_shinfo(*skb)->frag_list = dev_alloc_skb(dev->mtu +
6366 ALIGN_SIZE);
6367 if (skb_shinfo(*skb)->frag_list == NULL) {
6368 DBG_PRINT(ERR_DBG, "%s: dev_alloc_skb \
6369 failed\n ", dev->name);
6370 sp->mac_control.stats_info->sw_stat. \
6371 mem_alloc_fail_cnt++;
6372 return -ENOMEM ;
6373 }
6374 frag_list = skb_shinfo(*skb)->frag_list;
6375 frag_list->next = NULL;
6376 sp->mac_control.stats_info->sw_stat.mem_allocated
6377 += frag_list->truesize;
6378 /*
6379 * Buffer-2 receives L4 data payload
6380 */
6381 ((struct RxD3*)rxdp)->Buffer2_ptr = *temp2 =
6382 pci_map_single( sp->pdev, frag_list->data,
6383 dev->mtu, PCI_DMA_FROMDEVICE);
6384 } 6264 }
6385 } 6265 }
6386 return 0; 6266 return 0;
@@ -6395,10 +6275,6 @@ static void set_rxd_buffer_size(struct s2io_nic *sp, struct RxD_t *rxdp,
6395 rxdp->Control_2 = SET_BUFFER0_SIZE_3(BUF0_LEN); 6275 rxdp->Control_2 = SET_BUFFER0_SIZE_3(BUF0_LEN);
6396 rxdp->Control_2 |= SET_BUFFER1_SIZE_3(1); 6276 rxdp->Control_2 |= SET_BUFFER1_SIZE_3(1);
6397 rxdp->Control_2 |= SET_BUFFER2_SIZE_3( dev->mtu + 4); 6277 rxdp->Control_2 |= SET_BUFFER2_SIZE_3( dev->mtu + 4);
6398 } else {
6399 rxdp->Control_2 = SET_BUFFER0_SIZE_3(BUF0_LEN);
6400 rxdp->Control_2 |= SET_BUFFER1_SIZE_3(l3l4hdr_size + 4);
6401 rxdp->Control_2 |= SET_BUFFER2_SIZE_3(dev->mtu);
6402 } 6278 }
6403} 6279}
6404 6280
@@ -6420,8 +6296,6 @@ static int rxd_owner_bit_reset(struct s2io_nic *sp)
6420 size += NET_IP_ALIGN; 6296 size += NET_IP_ALIGN;
6421 else if (sp->rxd_mode == RXD_MODE_3B) 6297 else if (sp->rxd_mode == RXD_MODE_3B)
6422 size = dev->mtu + ALIGN_SIZE + BUF0_LEN + 4; 6298 size = dev->mtu + ALIGN_SIZE + BUF0_LEN + 4;
6423 else
6424 size = l3l4hdr_size + ALIGN_SIZE + BUF0_LEN + 4;
6425 6299
6426 for (i = 0; i < config->rx_ring_num; i++) { 6300 for (i = 0; i < config->rx_ring_num; i++) {
6427 blk_cnt = config->rx_cfg[i].num_rxd / 6301 blk_cnt = config->rx_cfg[i].num_rxd /
@@ -6431,7 +6305,7 @@ static int rxd_owner_bit_reset(struct s2io_nic *sp)
6431 for (k = 0; k < rxd_count[sp->rxd_mode]; k++) { 6305 for (k = 0; k < rxd_count[sp->rxd_mode]; k++) {
6432 rxdp = mac_control->rings[i]. 6306 rxdp = mac_control->rings[i].
6433 rx_blocks[j].rxds[k].virt_addr; 6307 rx_blocks[j].rxds[k].virt_addr;
6434 if(sp->rxd_mode >= RXD_MODE_3A) 6308 if(sp->rxd_mode == RXD_MODE_3B)
6435 ba = &mac_control->rings[i].ba[j][k]; 6309 ba = &mac_control->rings[i].ba[j][k];
6436 if (set_rxd_buffer_pointer(sp, rxdp, ba, 6310 if (set_rxd_buffer_pointer(sp, rxdp, ba,
6437 &skb,(u64 *)&temp0_64, 6311 &skb,(u64 *)&temp0_64,
@@ -6914,7 +6788,7 @@ static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp)
6914 sp->stats.rx_bytes += len; 6788 sp->stats.rx_bytes += len;
6915 skb_put(skb, len); 6789 skb_put(skb, len);
6916 6790
6917 } else if (sp->rxd_mode >= RXD_MODE_3A) { 6791 } else if (sp->rxd_mode == RXD_MODE_3B) {
6918 int get_block = ring_data->rx_curr_get_info.block_index; 6792 int get_block = ring_data->rx_curr_get_info.block_index;
6919 int get_off = ring_data->rx_curr_get_info.offset; 6793 int get_off = ring_data->rx_curr_get_info.offset;
6920 int buf0_len = RXD_GET_BUFFER0_SIZE_3(rxdp->Control_2); 6794 int buf0_len = RXD_GET_BUFFER0_SIZE_3(rxdp->Control_2);
@@ -6924,18 +6798,7 @@ static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp)
6924 struct buffAdd *ba = &ring_data->ba[get_block][get_off]; 6798 struct buffAdd *ba = &ring_data->ba[get_block][get_off];
6925 sp->stats.rx_bytes += buf0_len + buf2_len; 6799 sp->stats.rx_bytes += buf0_len + buf2_len;
6926 memcpy(buff, ba->ba_0, buf0_len); 6800 memcpy(buff, ba->ba_0, buf0_len);
6927 6801 skb_put(skb, buf2_len);
6928 if (sp->rxd_mode == RXD_MODE_3A) {
6929 int buf1_len = RXD_GET_BUFFER1_SIZE_3(rxdp->Control_2);
6930
6931 skb_put(skb, buf1_len);
6932 skb->len += buf2_len;
6933 skb->data_len += buf2_len;
6934 skb_put(skb_shinfo(skb)->frag_list, buf2_len);
6935 sp->stats.rx_bytes += buf1_len;
6936
6937 } else
6938 skb_put(skb, buf2_len);
6939 } 6802 }
6940 6803
6941 if ((rxdp->Control_1 & TCP_OR_UDP_FRAME) && ((!sp->lro) || 6804 if ((rxdp->Control_1 & TCP_OR_UDP_FRAME) && ((!sp->lro) ||
@@ -7145,10 +7008,10 @@ static int s2io_verify_parm(struct pci_dev *pdev, u8 *dev_intr_type)
7145 *dev_intr_type = INTA; 7008 *dev_intr_type = INTA;
7146 } 7009 }
7147 7010
7148 if (rx_ring_mode > 3) { 7011 if ((rx_ring_mode != 1) && (rx_ring_mode != 2)) {
7149 DBG_PRINT(ERR_DBG, "s2io: Requested ring mode not supported\n"); 7012 DBG_PRINT(ERR_DBG, "s2io: Requested ring mode not supported\n");
7150 DBG_PRINT(ERR_DBG, "s2io: Defaulting to 3-buffer mode\n"); 7013 DBG_PRINT(ERR_DBG, "s2io: Defaulting to 1-buffer mode\n");
7151 rx_ring_mode = 3; 7014 rx_ring_mode = 1;
7152 } 7015 }
7153 return SUCCESS; 7016 return SUCCESS;
7154} 7017}
@@ -7288,8 +7151,6 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
7288 sp->rxd_mode = RXD_MODE_1; 7151 sp->rxd_mode = RXD_MODE_1;
7289 if (rx_ring_mode == 2) 7152 if (rx_ring_mode == 2)
7290 sp->rxd_mode = RXD_MODE_3B; 7153 sp->rxd_mode = RXD_MODE_3B;
7291 if (rx_ring_mode == 3)
7292 sp->rxd_mode = RXD_MODE_3A;
7293 7154
7294 sp->intr_type = dev_intr_type; 7155 sp->intr_type = dev_intr_type;
7295 7156
@@ -7565,10 +7426,6 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
7565 DBG_PRINT(ERR_DBG, "%s: 2-Buffer receive mode enabled\n", 7426 DBG_PRINT(ERR_DBG, "%s: 2-Buffer receive mode enabled\n",
7566 dev->name); 7427 dev->name);
7567 break; 7428 break;
7568 case RXD_MODE_3A:
7569 DBG_PRINT(ERR_DBG, "%s: 3-Buffer receive mode enabled\n",
7570 dev->name);
7571 break;
7572 } 7429 }
7573 7430
7574 if (napi) 7431 if (napi)
diff --git a/drivers/net/s2io.h b/drivers/net/s2io.h
index 3887fe63a908..ba443f6b0137 100644
--- a/drivers/net/s2io.h
+++ b/drivers/net/s2io.h
@@ -575,8 +575,7 @@ struct RxD_block {
575#define SIZE_OF_BLOCK 4096 575#define SIZE_OF_BLOCK 4096
576 576
577#define RXD_MODE_1 0 /* One Buffer mode */ 577#define RXD_MODE_1 0 /* One Buffer mode */
578#define RXD_MODE_3A 1 /* Three Buffer mode */ 578#define RXD_MODE_3B 1 /* Two Buffer mode */
579#define RXD_MODE_3B 2 /* Two Buffer mode */
580 579
581/* Structure to hold virtual addresses of Buf0 and Buf1 in 580/* Structure to hold virtual addresses of Buf0 and Buf1 in
582 * 2buf mode. */ 581 * 2buf mode. */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-12 00:39:21 -0500