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path: root/drivers/net/pasemi_mac.c
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Diffstat (limited to 'drivers/net/pasemi_mac.c')
-rw-r--r--drivers/net/pasemi_mac.c934
1 files changed, 500 insertions, 434 deletions
diff --git a/drivers/net/pasemi_mac.c b/drivers/net/pasemi_mac.c
index 816a59e801b2..bb88a41b7591 100644
--- a/drivers/net/pasemi_mac.c
+++ b/drivers/net/pasemi_mac.c
@@ -32,9 +32,11 @@
#include <linux/ip.h>
#include <linux/tcp.h>
#include <net/checksum.h>
+#include <linux/inet_lro.h>
#include <asm/irq.h>
#include <asm/firmware.h>
+#include <asm/pasemi_dma.h>
#include "pasemi_mac.h"
@@ -55,9 +57,11 @@
/* Must be a power of two */
-#define RX_RING_SIZE 4096
+#define RX_RING_SIZE 2048
#define TX_RING_SIZE 4096
+#define LRO_MAX_AGGR 64
+
#define DEFAULT_MSG_ENABLE \
(NETIF_MSG_DRV | \
NETIF_MSG_PROBE | \
@@ -68,11 +72,11 @@
NETIF_MSG_RX_ERR | \
NETIF_MSG_TX_ERR)
-#define TX_RING(mac, num) ((mac)->tx->ring[(num) & (TX_RING_SIZE-1)])
-#define TX_RING_INFO(mac, num) ((mac)->tx->ring_info[(num) & (TX_RING_SIZE-1)])
-#define RX_RING(mac, num) ((mac)->rx->ring[(num) & (RX_RING_SIZE-1)])
-#define RX_RING_INFO(mac, num) ((mac)->rx->ring_info[(num) & (RX_RING_SIZE-1)])
-#define RX_BUFF(mac, num) ((mac)->rx->buffers[(num) & (RX_RING_SIZE-1)])
+#define TX_DESC(tx, num) ((tx)->chan.ring_virt[(num) & (TX_RING_SIZE-1)])
+#define TX_DESC_INFO(tx, num) ((tx)->ring_info[(num) & (TX_RING_SIZE-1)])
+#define RX_DESC(rx, num) ((rx)->chan.ring_virt[(num) & (RX_RING_SIZE-1)])
+#define RX_DESC_INFO(rx, num) ((rx)->ring_info[(num) & (RX_RING_SIZE-1)])
+#define RX_BUFF(rx, num) ((rx)->buffers[(num) & (RX_RING_SIZE-1)])
#define RING_USED(ring) (((ring)->next_to_fill - (ring)->next_to_clean) \
& ((ring)->size - 1))
@@ -88,8 +92,6 @@ static int debug = -1; /* -1 == use DEFAULT_MSG_ENABLE as value */
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "PA Semi MAC bitmapped debugging message enable value");
-static struct pasdma_status *dma_status;
-
static int translation_enabled(void)
{
#if defined(CONFIG_PPC_PASEMI_IOMMU_DMA_FORCE)
@@ -99,32 +101,78 @@ static int translation_enabled(void)
#endif
}
-static void write_iob_reg(struct pasemi_mac *mac, unsigned int reg,
- unsigned int val)
+static void write_iob_reg(unsigned int reg, unsigned int val)
{
- out_le32(mac->iob_regs+reg, val);
+ pasemi_write_iob_reg(reg, val);
}
-static unsigned int read_mac_reg(struct pasemi_mac *mac, unsigned int reg)
+static unsigned int read_mac_reg(const struct pasemi_mac *mac, unsigned int reg)
{
- return in_le32(mac->regs+reg);
+ return pasemi_read_mac_reg(mac->dma_if, reg);
}
-static void write_mac_reg(struct pasemi_mac *mac, unsigned int reg,
+static void write_mac_reg(const struct pasemi_mac *mac, unsigned int reg,
unsigned int val)
{
- out_le32(mac->regs+reg, val);
+ pasemi_write_mac_reg(mac->dma_if, reg, val);
}
-static unsigned int read_dma_reg(struct pasemi_mac *mac, unsigned int reg)
+static unsigned int read_dma_reg(unsigned int reg)
{
- return in_le32(mac->dma_regs+reg);
+ return pasemi_read_dma_reg(reg);
}
-static void write_dma_reg(struct pasemi_mac *mac, unsigned int reg,
- unsigned int val)
+static void write_dma_reg(unsigned int reg, unsigned int val)
+{
+ pasemi_write_dma_reg(reg, val);
+}
+
+static struct pasemi_mac_rxring *rx_ring(const struct pasemi_mac *mac)
{
- out_le32(mac->dma_regs+reg, val);
+ return mac->rx;
+}
+
+static struct pasemi_mac_txring *tx_ring(const struct pasemi_mac *mac)
+{
+ return mac->tx;
+}
+
+static inline void prefetch_skb(const struct sk_buff *skb)
+{
+ const void *d = skb;
+
+ prefetch(d);
+ prefetch(d+64);
+ prefetch(d+128);
+ prefetch(d+192);
+}
+
+static int mac_to_intf(struct pasemi_mac *mac)
+{
+ struct pci_dev *pdev = mac->pdev;
+ u32 tmp;
+ int nintf, off, i, j;
+ int devfn = pdev->devfn;
+
+ tmp = read_dma_reg(PAS_DMA_CAP_IFI);
+ nintf = (tmp & PAS_DMA_CAP_IFI_NIN_M) >> PAS_DMA_CAP_IFI_NIN_S;
+ off = (tmp & PAS_DMA_CAP_IFI_IOFF_M) >> PAS_DMA_CAP_IFI_IOFF_S;
+
+ /* IOFF contains the offset to the registers containing the
+ * DMA interface-to-MAC-pci-id mappings, and NIN contains number
+ * of total interfaces. Each register contains 4 devfns.
+ * Just do a linear search until we find the devfn of the MAC
+ * we're trying to look up.
+ */
+
+ for (i = 0; i < (nintf+3)/4; i++) {
+ tmp = read_dma_reg(off+4*i);
+ for (j = 0; j < 4; j++) {
+ if (((tmp >> (8*j)) & 0xff) == devfn)
+ return i*4 + j;
+ }
+ }
+ return -1;
}
static int pasemi_get_mac_addr(struct pasemi_mac *mac)
@@ -161,7 +209,6 @@ static int pasemi_get_mac_addr(struct pasemi_mac *mac)
return -ENOENT;
}
-
if (sscanf(maddr, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", &addr[0],
&addr[1], &addr[2], &addr[3], &addr[4], &addr[5]) != 6) {
dev_warn(&pdev->dev,
@@ -174,21 +221,51 @@ static int pasemi_get_mac_addr(struct pasemi_mac *mac)
return 0;
}
+static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
+ void **tcph, u64 *hdr_flags, void *data)
+{
+ u64 macrx = (u64) data;
+ unsigned int ip_len;
+ struct iphdr *iph;
+
+ /* IPv4 header checksum failed */
+ if ((macrx & XCT_MACRX_HTY_M) != XCT_MACRX_HTY_IPV4_OK)
+ return -1;
+
+ /* non tcp packet */
+ skb_reset_network_header(skb);
+ iph = ip_hdr(skb);
+ if (iph->protocol != IPPROTO_TCP)
+ return -1;
+
+ ip_len = ip_hdrlen(skb);
+ skb_set_transport_header(skb, ip_len);
+ *tcph = tcp_hdr(skb);
+
+ /* check if ip header and tcp header are complete */
+ if (iph->tot_len < ip_len + tcp_hdrlen(skb))
+ return -1;
+
+ *hdr_flags = LRO_IPV4 | LRO_TCP;
+ *iphdr = iph;
+
+ return 0;
+}
+
static int pasemi_mac_unmap_tx_skb(struct pasemi_mac *mac,
+ const int nfrags,
struct sk_buff *skb,
- dma_addr_t *dmas)
+ const dma_addr_t *dmas)
{
int f;
- int nfrags = skb_shinfo(skb)->nr_frags;
+ struct pci_dev *pdev = mac->dma_pdev;
- pci_unmap_single(mac->dma_pdev, dmas[0], skb_headlen(skb),
- PCI_DMA_TODEVICE);
+ pci_unmap_single(pdev, dmas[0], skb_headlen(skb), PCI_DMA_TODEVICE);
for (f = 0; f < nfrags; f++) {
skb_frag_t *frag = &skb_shinfo(skb)->frags[f];
- pci_unmap_page(mac->dma_pdev, dmas[f+1], frag->size,
- PCI_DMA_TODEVICE);
+ pci_unmap_page(pdev, dmas[f+1], frag->size, PCI_DMA_TODEVICE);
}
dev_kfree_skb_irq(skb);
@@ -198,17 +275,21 @@ static int pasemi_mac_unmap_tx_skb(struct pasemi_mac *mac,
return (nfrags + 3) & ~1;
}
-static int pasemi_mac_setup_rx_resources(struct net_device *dev)
+static int pasemi_mac_setup_rx_resources(const struct net_device *dev)
{
struct pasemi_mac_rxring *ring;
struct pasemi_mac *mac = netdev_priv(dev);
- int chan_id = mac->dma_rxch;
+ int chno;
unsigned int cfg;
- ring = kzalloc(sizeof(*ring), GFP_KERNEL);
+ ring = pasemi_dma_alloc_chan(RXCHAN, sizeof(struct pasemi_mac_rxring),
+ offsetof(struct pasemi_mac_rxring, chan));
- if (!ring)
- goto out_ring;
+ if (!ring) {
+ dev_err(&mac->pdev->dev, "Can't allocate RX channel\n");
+ goto out_chan;
+ }
+ chno = ring->chan.chno;
spin_lock_init(&ring->lock);
@@ -220,85 +301,80 @@ static int pasemi_mac_setup_rx_resources(struct net_device *dev)
goto out_ring_info;
/* Allocate descriptors */
- ring->ring = dma_alloc_coherent(&mac->dma_pdev->dev,
- RX_RING_SIZE * sizeof(u64),
- &ring->dma, GFP_KERNEL);
-
- if (!ring->ring)
+ if (pasemi_dma_alloc_ring(&ring->chan, RX_RING_SIZE))
goto out_ring_desc;
- memset(ring->ring, 0, RX_RING_SIZE * sizeof(u64));
-
ring->buffers = dma_alloc_coherent(&mac->dma_pdev->dev,
RX_RING_SIZE * sizeof(u64),
&ring->buf_dma, GFP_KERNEL);
if (!ring->buffers)
- goto out_buffers;
+ goto out_ring_desc;
memset(ring->buffers, 0, RX_RING_SIZE * sizeof(u64));
- write_dma_reg(mac, PAS_DMA_RXCHAN_BASEL(chan_id), PAS_DMA_RXCHAN_BASEL_BRBL(ring->dma));
+ write_dma_reg(PAS_DMA_RXCHAN_BASEL(chno),
+ PAS_DMA_RXCHAN_BASEL_BRBL(ring->chan.ring_dma));
- write_dma_reg(mac, PAS_DMA_RXCHAN_BASEU(chan_id),
- PAS_DMA_RXCHAN_BASEU_BRBH(ring->dma >> 32) |
- PAS_DMA_RXCHAN_BASEU_SIZ(RX_RING_SIZE >> 3));
+ write_dma_reg(PAS_DMA_RXCHAN_BASEU(chno),
+ PAS_DMA_RXCHAN_BASEU_BRBH(ring->chan.ring_dma >> 32) |
+ PAS_DMA_RXCHAN_BASEU_SIZ(RX_RING_SIZE >> 3));
cfg = PAS_DMA_RXCHAN_CFG_HBU(2);
if (translation_enabled())
cfg |= PAS_DMA_RXCHAN_CFG_CTR;
- write_dma_reg(mac, PAS_DMA_RXCHAN_CFG(chan_id), cfg);
+ write_dma_reg(PAS_DMA_RXCHAN_CFG(chno), cfg);
- write_dma_reg(mac, PAS_DMA_RXINT_BASEL(mac->dma_if),
- PAS_DMA_RXINT_BASEL_BRBL(ring->buf_dma));
+ write_dma_reg(PAS_DMA_RXINT_BASEL(mac->dma_if),
+ PAS_DMA_RXINT_BASEL_BRBL(ring->buf_dma));
- write_dma_reg(mac, PAS_DMA_RXINT_BASEU(mac->dma_if),
- PAS_DMA_RXINT_BASEU_BRBH(ring->buf_dma >> 32) |
- PAS_DMA_RXINT_BASEU_SIZ(RX_RING_SIZE >> 3));
+ write_dma_reg(PAS_DMA_RXINT_BASEU(mac->dma_if),
+ PAS_DMA_RXINT_BASEU_BRBH(ring->buf_dma >> 32) |
+ PAS_DMA_RXINT_BASEU_SIZ(RX_RING_SIZE >> 3));
- cfg = PAS_DMA_RXINT_CFG_DHL(3) | PAS_DMA_RXINT_CFG_L2 |
+ cfg = PAS_DMA_RXINT_CFG_DHL(2) | PAS_DMA_RXINT_CFG_L2 |
PAS_DMA_RXINT_CFG_LW | PAS_DMA_RXINT_CFG_RBP |
PAS_DMA_RXINT_CFG_HEN;
if (translation_enabled())
cfg |= PAS_DMA_RXINT_CFG_ITRR | PAS_DMA_RXINT_CFG_ITR;
- write_dma_reg(mac, PAS_DMA_RXINT_CFG(mac->dma_if), cfg);
+ write_dma_reg(PAS_DMA_RXINT_CFG(mac->dma_if), cfg);
ring->next_to_fill = 0;
ring->next_to_clean = 0;
-
- snprintf(ring->irq_name, sizeof(ring->irq_name),
- "%s rx", dev->name);
+ ring->mac = mac;
mac->rx = ring;
return 0;
-out_buffers:
- dma_free_coherent(&mac->dma_pdev->dev,
- RX_RING_SIZE * sizeof(u64),
- mac->rx->ring, mac->rx->dma);
out_ring_desc:
kfree(ring->ring_info);
out_ring_info:
- kfree(ring);
-out_ring:
+ pasemi_dma_free_chan(&ring->chan);
+out_chan:
return -ENOMEM;
}
-
-static int pasemi_mac_setup_tx_resources(struct net_device *dev)
+static struct pasemi_mac_txring *
+pasemi_mac_setup_tx_resources(const struct net_device *dev)
{
struct pasemi_mac *mac = netdev_priv(dev);
u32 val;
- int chan_id = mac->dma_txch;
struct pasemi_mac_txring *ring;
unsigned int cfg;
+ int chno;
+
+ ring = pasemi_dma_alloc_chan(TXCHAN, sizeof(struct pasemi_mac_txring),
+ offsetof(struct pasemi_mac_txring, chan));
- ring = kzalloc(sizeof(*ring), GFP_KERNEL);
- if (!ring)
- goto out_ring;
+ if (!ring) {
+ dev_err(&mac->pdev->dev, "Can't allocate TX channel\n");
+ goto out_chan;
+ }
+
+ chno = ring->chan.chno;
spin_lock_init(&ring->lock);
@@ -309,20 +385,15 @@ static int pasemi_mac_setup_tx_resources(struct net_device *dev)
goto out_ring_info;
/* Allocate descriptors */
- ring->ring = dma_alloc_coherent(&mac->dma_pdev->dev,
- TX_RING_SIZE * sizeof(u64),
- &ring->dma, GFP_KERNEL);
- if (!ring->ring)
+ if (pasemi_dma_alloc_ring(&ring->chan, TX_RING_SIZE))
goto out_ring_desc;
- memset(ring->ring, 0, TX_RING_SIZE * sizeof(u64));
-
- write_dma_reg(mac, PAS_DMA_TXCHAN_BASEL(chan_id),
- PAS_DMA_TXCHAN_BASEL_BRBL(ring->dma));
- val = PAS_DMA_TXCHAN_BASEU_BRBH(ring->dma >> 32);
+ write_dma_reg(PAS_DMA_TXCHAN_BASEL(chno),
+ PAS_DMA_TXCHAN_BASEL_BRBL(ring->chan.ring_dma));
+ val = PAS_DMA_TXCHAN_BASEU_BRBH(ring->chan.ring_dma >> 32);
val |= PAS_DMA_TXCHAN_BASEU_SIZ(TX_RING_SIZE >> 3);
- write_dma_reg(mac, PAS_DMA_TXCHAN_BASEU(chan_id), val);
+ write_dma_reg(PAS_DMA_TXCHAN_BASEU(chno), val);
cfg = PAS_DMA_TXCHAN_CFG_TY_IFACE |
PAS_DMA_TXCHAN_CFG_TATTR(mac->dma_if) |
@@ -332,71 +403,64 @@ static int pasemi_mac_setup_tx_resources(struct net_device *dev)
if (translation_enabled())
cfg |= PAS_DMA_TXCHAN_CFG_TRD | PAS_DMA_TXCHAN_CFG_TRR;
- write_dma_reg(mac, PAS_DMA_TXCHAN_CFG(chan_id), cfg);
+ write_dma_reg(PAS_DMA_TXCHAN_CFG(chno), cfg);
ring->next_to_fill = 0;
ring->next_to_clean = 0;
+ ring->mac = mac;
- snprintf(ring->irq_name, sizeof(ring->irq_name),
- "%s tx", dev->name);
- mac->tx = ring;
-
- return 0;
+ return ring;
out_ring_desc:
kfree(ring->ring_info);
out_ring_info:
- kfree(ring);
-out_ring:
- return -ENOMEM;
+ pasemi_dma_free_chan(&ring->chan);
+out_chan:
+ return NULL;
}
-static void pasemi_mac_free_tx_resources(struct net_device *dev)
+static void pasemi_mac_free_tx_resources(struct pasemi_mac *mac)
{
- struct pasemi_mac *mac = netdev_priv(dev);
+ struct pasemi_mac_txring *txring = tx_ring(mac);
unsigned int i, j;
struct pasemi_mac_buffer *info;
dma_addr_t dmas[MAX_SKB_FRAGS+1];
- int freed;
+ int freed, nfrags;
int start, limit;
- start = mac->tx->next_to_clean;
- limit = mac->tx->next_to_fill;
+ start = txring->next_to_clean;
+ limit = txring->next_to_fill;
/* Compensate for when fill has wrapped and clean has not */
if (start > limit)
limit += TX_RING_SIZE;
for (i = start; i < limit; i += freed) {
- info = &TX_RING_INFO(mac, i+1);
+ info = &txring->ring_info[(i+1) & (TX_RING_SIZE-1)];
if (info->dma && info->skb) {
- for (j = 0; j <= skb_shinfo(info->skb)->nr_frags; j++)
- dmas[j] = TX_RING_INFO(mac, i+1+j).dma;
- freed = pasemi_mac_unmap_tx_skb(mac, info->skb, dmas);
+ nfrags = skb_shinfo(info->skb)->nr_frags;
+ for (j = 0; j <= nfrags; j++)
+ dmas[j] = txring->ring_info[(i+1+j) &
+ (TX_RING_SIZE-1)].dma;
+ freed = pasemi_mac_unmap_tx_skb(mac, nfrags,
+ info->skb, dmas);
} else
freed = 2;
}
- for (i = 0; i < TX_RING_SIZE; i++)
- TX_RING(mac, i) = 0;
-
- dma_free_coherent(&mac->dma_pdev->dev,
- TX_RING_SIZE * sizeof(u64),
- mac->tx->ring, mac->tx->dma);
+ kfree(txring->ring_info);
+ pasemi_dma_free_chan(&txring->chan);
- kfree(mac->tx->ring_info);
- kfree(mac->tx);
- mac->tx = NULL;
}
-static void pasemi_mac_free_rx_resources(struct net_device *dev)
+static void pasemi_mac_free_rx_resources(struct pasemi_mac *mac)
{
- struct pasemi_mac *mac = netdev_priv(dev);
+ struct pasemi_mac_rxring *rx = rx_ring(mac);
unsigned int i;
struct pasemi_mac_buffer *info;
for (i = 0; i < RX_RING_SIZE; i++) {
- info = &RX_RING_INFO(mac, i);
+ info = &RX_DESC_INFO(rx, i);
if (info->skb && info->dma) {
pci_unmap_single(mac->dma_pdev,
info->dma,
@@ -409,45 +473,38 @@ static void pasemi_mac_free_rx_resources(struct net_device *dev)
}
for (i = 0; i < RX_RING_SIZE; i++)
- RX_RING(mac, i) = 0;
-
- dma_free_coherent(&mac->dma_pdev->dev,
- RX_RING_SIZE * sizeof(u64),
- mac->rx->ring, mac->rx->dma);
+ RX_DESC(rx, i) = 0;
dma_free_coherent(&mac->dma_pdev->dev, RX_RING_SIZE * sizeof(u64),
- mac->rx->buffers, mac->rx->buf_dma);
+ rx_ring(mac)->buffers, rx_ring(mac)->buf_dma);
- kfree(mac->rx->ring_info);
- kfree(mac->rx);
+ kfree(rx_ring(mac)->ring_info);
+ pasemi_dma_free_chan(&rx_ring(mac)->chan);
mac->rx = NULL;
}
-static void pasemi_mac_replenish_rx_ring(struct net_device *dev, int limit)
+static void pasemi_mac_replenish_rx_ring(const struct net_device *dev,
+ const int limit)
{
- struct pasemi_mac *mac = netdev_priv(dev);
+ const struct pasemi_mac *mac = netdev_priv(dev);
+ struct pasemi_mac_rxring *rx = rx_ring(mac);
int fill, count;
if (limit <= 0)
return;
- fill = mac->rx->next_to_fill;
+ fill = rx_ring(mac)->next_to_fill;
for (count = 0; count < limit; count++) {
- struct pasemi_mac_buffer *info = &RX_RING_INFO(mac, fill);
- u64 *buff = &RX_BUFF(mac, fill);
+ struct pasemi_mac_buffer *info = &RX_DESC_INFO(rx, fill);
+ u64 *buff = &RX_BUFF(rx, fill);
struct sk_buff *skb;
dma_addr_t dma;
/* Entry in use? */
WARN_ON(*buff);
- /* skb might still be in there for recycle on short receives */
- if (info->skb)
- skb = info->skb;
- else {
- skb = dev_alloc_skb(BUF_SIZE);
- skb_reserve(skb, LOCAL_SKB_ALIGN);
- }
+ skb = dev_alloc_skb(BUF_SIZE);
+ skb_reserve(skb, LOCAL_SKB_ALIGN);
if (unlikely(!skb))
break;
@@ -469,94 +526,108 @@ static void pasemi_mac_replenish_rx_ring(struct net_device *dev, int limit)
wmb();
- write_dma_reg(mac, PAS_DMA_RXINT_INCR(mac->dma_if), count);
+ write_dma_reg(PAS_DMA_RXINT_INCR(mac->dma_if), count);
- mac->rx->next_to_fill = (mac->rx->next_to_fill + count) &
+ rx_ring(mac)->next_to_fill = (rx_ring(mac)->next_to_fill + count) &
(RX_RING_SIZE - 1);
}
-static void pasemi_mac_restart_rx_intr(struct pasemi_mac *mac)
+static void pasemi_mac_restart_rx_intr(const struct pasemi_mac *mac)
{
+ struct pasemi_mac_rxring *rx = rx_ring(mac);
unsigned int reg, pcnt;
/* Re-enable packet count interrupts: finally
* ack the packet count interrupt we got in rx_intr.
*/
- pcnt = *mac->rx_status & PAS_STATUS_PCNT_M;
+ pcnt = *rx->chan.status & PAS_STATUS_PCNT_M;
reg = PAS_IOB_DMA_RXCH_RESET_PCNT(pcnt) | PAS_IOB_DMA_RXCH_RESET_PINTC;
- write_iob_reg(mac, PAS_IOB_DMA_RXCH_RESET(mac->dma_rxch), reg);
+ if (*rx->chan.status & PAS_STATUS_TIMER)
+ reg |= PAS_IOB_DMA_RXCH_RESET_TINTC;
+
+ write_iob_reg(PAS_IOB_DMA_RXCH_RESET(mac->rx->chan.chno), reg);
}
-static void pasemi_mac_restart_tx_intr(struct pasemi_mac *mac)
+static void pasemi_mac_restart_tx_intr(const struct pasemi_mac *mac)
{
unsigned int reg, pcnt;
/* Re-enable packet count interrupts */
- pcnt = *mac->tx_status & PAS_STATUS_PCNT_M;
+ pcnt = *tx_ring(mac)->chan.status & PAS_STATUS_PCNT_M;
reg = PAS_IOB_DMA_TXCH_RESET_PCNT(pcnt) | PAS_IOB_DMA_TXCH_RESET_PINTC;
- write_iob_reg(mac, PAS_IOB_DMA_TXCH_RESET(mac->dma_txch), reg);
+ write_iob_reg(PAS_IOB_DMA_TXCH_RESET(tx_ring(mac)->chan.chno), reg);
}
-static inline void pasemi_mac_rx_error(struct pasemi_mac *mac, u64 macrx)
+static inline void pasemi_mac_rx_error(const struct pasemi_mac *mac,
+ const u64 macrx)
{
unsigned int rcmdsta, ccmdsta;
+ struct pasemi_dmachan *chan = &rx_ring(mac)->chan;
if (!netif_msg_rx_err(mac))
return;
- rcmdsta = read_dma_reg(mac, PAS_DMA_RXINT_RCMDSTA(mac->dma_if));
- ccmdsta = read_dma_reg(mac, PAS_DMA_RXCHAN_CCMDSTA(mac->dma_rxch));
+ rcmdsta = read_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if));
+ ccmdsta = read_dma_reg(PAS_DMA_RXCHAN_CCMDSTA(chan->chno));
printk(KERN_ERR "pasemi_mac: rx error. macrx %016lx, rx status %lx\n",
- macrx, *mac->rx_status);
+ macrx, *chan->status);
printk(KERN_ERR "pasemi_mac: rcmdsta %08x ccmdsta %08x\n",
rcmdsta, ccmdsta);
}
-static inline void pasemi_mac_tx_error(struct pasemi_mac *mac, u64 mactx)
+static inline void pasemi_mac_tx_error(const struct pasemi_mac *mac,
+ const u64 mactx)
{
unsigned int cmdsta;
+ struct pasemi_dmachan *chan = &tx_ring(mac)->chan;
if (!netif_msg_tx_err(mac))
return;
- cmdsta = read_dma_reg(mac, PAS_DMA_TXCHAN_TCMDSTA(mac->dma_txch));
+ cmdsta = read_dma_reg(PAS_DMA_TXCHAN_TCMDSTA(chan->chno));
printk(KERN_ERR "pasemi_mac: tx error. mactx 0x%016lx, "\
- "tx status 0x%016lx\n", mactx, *mac->tx_status);
+ "tx status 0x%016lx\n", mactx, *chan->status);
printk(KERN_ERR "pasemi_mac: tcmdsta 0x%08x\n", cmdsta);
}
-static int pasemi_mac_clean_rx(struct pasemi_mac *mac, int limit)
+static int pasemi_mac_clean_rx(struct pasemi_mac_rxring *rx,
+ const int limit)
{
+ const struct pasemi_dmachan *chan = &rx->chan;
+ struct pasemi_mac *mac = rx->mac;
+ struct pci_dev *pdev = mac->dma_pdev;
unsigned int n;
- int count;
+ int count, buf_index, tot_bytes, packets;
struct pasemi_mac_buffer *info;
struct sk_buff *skb;
unsigned int len;
- u64 macrx;
+ u64 macrx, eval;
dma_addr_t dma;
- int buf_index;
- u64 eval;
- spin_lock(&mac->rx->lock);
+ tot_bytes = 0;
+ packets = 0;
- n = mac->rx->next_to_clean;
+ spin_lock(&rx->lock);
- prefetch(&RX_RING(mac, n));
+ n = rx->next_to_clean;
+
+ prefetch(&RX_DESC(rx, n));
for (count = 0; count < limit; count++) {
- macrx = RX_RING(mac, n);
+ macrx = RX_DESC(rx, n);
+ prefetch(&RX_DESC(rx, n+4));
if ((macrx & XCT_MACRX_E) ||
- (*mac->rx_status & PAS_STATUS_ERROR))
+ (*chan->status & PAS_STATUS_ERROR))
pasemi_mac_rx_error(mac, macrx);
if (!(macrx & XCT_MACRX_O))
@@ -566,21 +637,21 @@ static int pasemi_mac_clean_rx(struct pasemi_mac *mac, int limit)
BUG_ON(!(macrx & XCT_MACRX_RR_8BRES));
- eval = (RX_RING(mac, n+1) & XCT_RXRES_8B_EVAL_M) >>
+ eval = (RX_DESC(rx, n+1) & XCT_RXRES_8B_EVAL_M) >>
XCT_RXRES_8B_EVAL_S;
buf_index = eval-1;
- dma = (RX_RING(mac, n+2) & XCT_PTR_ADDR_M);
- info = &RX_RING_INFO(mac, buf_index);
+ dma = (RX_DESC(rx, n+2) & XCT_PTR_ADDR_M);
+ info = &RX_DESC_INFO(rx, buf_index);
skb = info->skb;
- prefetch(skb);
- prefetch(&skb->data_len);
+ prefetch_skb(skb);
len = (macrx & XCT_MACRX_LLEN_M) >> XCT_MACRX_LLEN_S;
- pci_unmap_single(mac->dma_pdev, dma, len, PCI_DMA_FROMDEVICE);
+ pci_unmap_single(pdev, dma, BUF_SIZE-LOCAL_SKB_ALIGN,
+ PCI_DMA_FROMDEVICE);
if (macrx & XCT_MACRX_CRC) {
/* CRC error flagged */
@@ -590,26 +661,9 @@ static int pasemi_mac_clean_rx(struct pasemi_mac *mac, int limit)
goto next;
}
- if (len < 256) {
- struct sk_buff *new_skb;
-
- new_skb = netdev_alloc_skb(mac->netdev,
- len + LOCAL_SKB_ALIGN);
- if (new_skb) {
- skb_reserve(new_skb, LOCAL_SKB_ALIGN);
- memcpy(new_skb->data, skb->data, len);
- /* save the skb in buffer_info as good */
- skb = new_skb;
- }
- /* else just continue with the old one */
- } else
- info->skb = NULL;
-
+ info->skb = NULL;
info->dma = 0;
- /* Don't include CRC */
- skb_put(skb, len-4);
-
if (likely((macrx & XCT_MACRX_HTY_M) == XCT_MACRX_HTY_IPV4_OK)) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
skb->csum = (macrx & XCT_MACRX_CSUM_M) >>
@@ -617,41 +671,49 @@ static int pasemi_mac_clean_rx(struct pasemi_mac *mac, int limit)
} else
skb->ip_summed = CHECKSUM_NONE;
- mac->netdev->stats.rx_bytes += len;
- mac->netdev->stats.rx_packets++;
+ packets++;
+ tot_bytes += len;
+
+ /* Don't include CRC */
+ skb_put(skb, len-4);
skb->protocol = eth_type_trans(skb, mac->netdev);
- netif_receive_skb(skb);
+ lro_receive_skb(&mac->lro_mgr, skb, (void *)macrx);
next:
- RX_RING(mac, n) = 0;
- RX_RING(mac, n+1) = 0;
+ RX_DESC(rx, n) = 0;
+ RX_DESC(rx, n+1) = 0;
/* Need to zero it out since hardware doesn't, since the
* replenish loop uses it to tell when it's done.
*/
- RX_BUFF(mac, buf_index) = 0;
+ RX_BUFF(rx, buf_index) = 0;
n += 4;
}
if (n > RX_RING_SIZE) {
/* Errata 5971 workaround: L2 target of headers */
- write_iob_reg(mac, PAS_IOB_COM_PKTHDRCNT, 0);
+ write_iob_reg(PAS_IOB_COM_PKTHDRCNT, 0);
n &= (RX_RING_SIZE-1);
}
- mac->rx->next_to_clean = n;
+ rx_ring(mac)->next_to_clean = n;
+
+ lro_flush_all(&mac->lro_mgr);
/* Increase is in number of 16-byte entries, and since each descriptor
* with an 8BRES takes up 3x8 bytes (padded to 4x8), increase with
* count*2.
*/
- write_dma_reg(mac, PAS_DMA_RXCHAN_INCR(mac->dma_rxch), count << 1);
+ write_dma_reg(PAS_DMA_RXCHAN_INCR(mac->rx->chan.chno), count << 1);
pasemi_mac_replenish_rx_ring(mac->netdev, count);
- spin_unlock(&mac->rx->lock);
+ mac->netdev->stats.rx_bytes += tot_bytes;
+ mac->netdev->stats.rx_packets += packets;
+
+ spin_unlock(&rx_ring(mac)->lock);
return count;
}
@@ -659,8 +721,10 @@ next:
/* Can't make this too large or we blow the kernel stack limits */
#define TX_CLEAN_BATCHSIZE (128/MAX_SKB_FRAGS)
-static int pasemi_mac_clean_tx(struct pasemi_mac *mac)
+static int pasemi_mac_clean_tx(struct pasemi_mac_txring *txring)
{
+ struct pasemi_dmachan *chan = &txring->chan;
+ struct pasemi_mac *mac = txring->mac;
int i, j;
unsigned int start, descr_count, buf_count, batch_limit;
unsigned int ring_limit;
@@ -668,14 +732,18 @@ static int pasemi_mac_clean_tx(struct pasemi_mac *mac)
unsigned long flags;
struct sk_buff *skbs[TX_CLEAN_BATCHSIZE];
dma_addr_t dmas[TX_CLEAN_BATCHSIZE][MAX_SKB_FRAGS+1];
+ int nf[TX_CLEAN_BATCHSIZE];
+ int nr_frags;
total_count = 0;
batch_limit = TX_CLEAN_BATCHSIZE;
restart:
- spin_lock_irqsave(&mac->tx->lock, flags);
+ spin_lock_irqsave(&txring->lock, flags);
+
+ start = txring->next_to_clean;
+ ring_limit = txring->next_to_fill;
- start = mac->tx->next_to_clean;
- ring_limit = mac->tx->next_to_fill;
+ prefetch(&TX_DESC_INFO(txring, start+1).skb);
/* Compensate for when fill has wrapped but clean has not */
if (start > ring_limit)
@@ -687,41 +755,45 @@ restart:
for (i = start;
descr_count < batch_limit && i < ring_limit;
i += buf_count) {
- u64 mactx = TX_RING(mac, i);
+ u64 mactx = TX_DESC(txring, i);
struct sk_buff *skb;
+ skb = TX_DESC_INFO(txring, i+1).skb;
+ nr_frags = TX_DESC_INFO(txring, i).dma;
+
if ((mactx & XCT_MACTX_E) ||
- (*mac->tx_status & PAS_STATUS_ERROR))
+ (*chan->status & PAS_STATUS_ERROR))
pasemi_mac_tx_error(mac, mactx);
if (unlikely(mactx & XCT_MACTX_O))
/* Not yet transmitted */
break;
- skb = TX_RING_INFO(mac, i+1).skb;
- skbs[descr_count] = skb;
-
- buf_count = 2 + skb_shinfo(skb)->nr_frags;
- for (j = 0; j <= skb_shinfo(skb)->nr_frags; j++)
- dmas[descr_count][j] = TX_RING_INFO(mac, i+1+j).dma;
-
- TX_RING(mac, i) = 0;
- TX_RING(mac, i+1) = 0;
-
+ buf_count = 2 + nr_frags;
/* Since we always fill with an even number of entries, make
* sure we skip any unused one at the end as well.
*/
if (buf_count & 1)
buf_count++;
+
+ for (j = 0; j <= nr_frags; j++)
+ dmas[descr_count][j] = TX_DESC_INFO(txring, i+1+j).dma;
+
+ skbs[descr_count] = skb;
+ nf[descr_count] = nr_frags;
+
+ TX_DESC(txring, i) = 0;
+ TX_DESC(txring, i+1) = 0;
+
descr_count++;
}
- mac->tx->next_to_clean = i & (TX_RING_SIZE-1);
+ txring->next_to_clean = i & (TX_RING_SIZE-1);
- spin_unlock_irqrestore(&mac->tx->lock, flags);
+ spin_unlock_irqrestore(&txring->lock, flags);
netif_wake_queue(mac->netdev);
for (i = 0; i < descr_count; i++)
- pasemi_mac_unmap_tx_skb(mac, skbs[i], dmas[i]);
+ pasemi_mac_unmap_tx_skb(mac, nf[i], skbs[i], dmas[i]);
total_count += descr_count;
@@ -735,11 +807,13 @@ restart:
static irqreturn_t pasemi_mac_rx_intr(int irq, void *data)
{
- struct net_device *dev = data;
- struct pasemi_mac *mac = netdev_priv(dev);
+ const struct pasemi_mac_rxring *rxring = data;
+ struct pasemi_mac *mac = rxring->mac;
+ struct net_device *dev = mac->netdev;
+ const struct pasemi_dmachan *chan = &rxring->chan;
unsigned int reg;
- if (!(*mac->rx_status & PAS_STATUS_CAUSE_M))
+ if (!(*chan->status & PAS_STATUS_CAUSE_M))
return IRQ_NONE;
/* Don't reset packet count so it won't fire again but clear
@@ -747,45 +821,77 @@ static irqreturn_t pasemi_mac_rx_intr(int irq, void *data)
*/
reg = 0;
- if (*mac->rx_status & PAS_STATUS_SOFT)
+ if (*chan->status & PAS_STATUS_SOFT)
reg |= PAS_IOB_DMA_RXCH_RESET_SINTC;
- if (*mac->rx_status & PAS_STATUS_ERROR)
+ if (*chan->status & PAS_STATUS_ERROR)
reg |= PAS_IOB_DMA_RXCH_RESET_DINTC;
- if (*mac->rx_status & PAS_STATUS_TIMER)
- reg |= PAS_IOB_DMA_RXCH_RESET_TINTC;
netif_rx_schedule(dev, &mac->napi);
- write_iob_reg(mac, PAS_IOB_DMA_RXCH_RESET(mac->dma_rxch), reg);
+ write_iob_reg(PAS_IOB_DMA_RXCH_RESET(chan->chno), reg);
return IRQ_HANDLED;
}
-static irqreturn_t pasemi_mac_tx_intr(int irq, void *data)
+#define TX_CLEAN_INTERVAL HZ
+
+static void pasemi_mac_tx_timer(unsigned long data)
{
- struct net_device *dev = data;
- struct pasemi_mac *mac = netdev_priv(dev);
- unsigned int reg, pcnt;
+ struct pasemi_mac_txring *txring = (struct pasemi_mac_txring *)data;
+ struct pasemi_mac *mac = txring->mac;
- if (!(*mac->tx_status & PAS_STATUS_CAUSE_M))
- return IRQ_NONE;
+ pasemi_mac_clean_tx(txring);
+
+ mod_timer(&txring->clean_timer, jiffies + TX_CLEAN_INTERVAL);
- pasemi_mac_clean_tx(mac);
+ pasemi_mac_restart_tx_intr(mac);
+}
- pcnt = *mac->tx_status & PAS_STATUS_PCNT_M;
+static irqreturn_t pasemi_mac_tx_intr(int irq, void *data)
+{
+ struct pasemi_mac_txring *txring = data;
+ const struct pasemi_dmachan *chan = &txring->chan;
+ struct pasemi_mac *mac = txring->mac;
+ unsigned int reg;
- reg = PAS_IOB_DMA_TXCH_RESET_PCNT(pcnt) | PAS_IOB_DMA_TXCH_RESET_PINTC;
+ if (!(*chan->status & PAS_STATUS_CAUSE_M))
+ return IRQ_NONE;
- if (*mac->tx_status & PAS_STATUS_SOFT)
+ reg = 0;
+
+ if (*chan->status & PAS_STATUS_SOFT)
reg |= PAS_IOB_DMA_TXCH_RESET_SINTC;
- if (*mac->tx_status & PAS_STATUS_ERROR)
+ if (*chan->status & PAS_STATUS_ERROR)
reg |= PAS_IOB_DMA_TXCH_RESET_DINTC;
- write_iob_reg(mac, PAS_IOB_DMA_TXCH_RESET(mac->dma_txch), reg);
+ mod_timer(&txring->clean_timer, jiffies + (TX_CLEAN_INTERVAL)*2);
+
+ netif_rx_schedule(mac->netdev, &mac->napi);
+
+ if (reg)
+ write_iob_reg(PAS_IOB_DMA_TXCH_RESET(chan->chno), reg);
return IRQ_HANDLED;
}
+static void pasemi_mac_intf_disable(struct pasemi_mac *mac)
+{
+ unsigned int flags;
+
+ flags = read_mac_reg(mac, PAS_MAC_CFG_PCFG);
+ flags &= ~PAS_MAC_CFG_PCFG_PE;
+ write_mac_reg(mac, PAS_MAC_CFG_PCFG, flags);
+}
+
+static void pasemi_mac_intf_enable(struct pasemi_mac *mac)
+{
+ unsigned int flags;
+
+ flags = read_mac_reg(mac, PAS_MAC_CFG_PCFG);
+ flags |= PAS_MAC_CFG_PCFG_PE;
+ write_mac_reg(mac, PAS_MAC_CFG_PCFG, flags);
+}
+
static void pasemi_adjust_link(struct net_device *dev)
{
struct pasemi_mac *mac = netdev_priv(dev);
@@ -801,11 +907,14 @@ static void pasemi_adjust_link(struct net_device *dev)
printk(KERN_INFO "%s: Link is down.\n", dev->name);
netif_carrier_off(dev);
+ pasemi_mac_intf_disable(mac);
mac->link = 0;
return;
- } else
+ } else {
+ pasemi_mac_intf_enable(mac);
netif_carrier_on(dev);
+ }
flags = read_mac_reg(mac, PAS_MAC_CFG_PCFG);
new_flags = flags & ~(PAS_MAC_CFG_PCFG_HD | PAS_MAC_CFG_PCFG_SPD_M |
@@ -897,15 +1006,14 @@ err:
static int pasemi_mac_open(struct net_device *dev)
{
struct pasemi_mac *mac = netdev_priv(dev);
- int base_irq;
unsigned int flags;
int ret;
/* enable rx section */
- write_dma_reg(mac, PAS_DMA_COM_RXCMD, PAS_DMA_COM_RXCMD_EN);
+ write_dma_reg(PAS_DMA_COM_RXCMD, PAS_DMA_COM_RXCMD_EN);
/* enable tx section */
- write_dma_reg(mac, PAS_DMA_COM_TXCMD, PAS_DMA_COM_TXCMD_EN);
+ write_dma_reg(PAS_DMA_COM_TXCMD, PAS_DMA_COM_TXCMD_EN);
flags = PAS_MAC_CFG_TXP_FCE | PAS_MAC_CFG_TXP_FPC(3) |
PAS_MAC_CFG_TXP_SL(3) | PAS_MAC_CFG_TXP_COB(0xf) |
@@ -913,62 +1021,59 @@ static int pasemi_mac_open(struct net_device *dev)
write_mac_reg(mac, PAS_MAC_CFG_TXP, flags);
- write_iob_reg(mac, PAS_IOB_DMA_RXCH_CFG(mac->dma_rxch),
- PAS_IOB_DMA_RXCH_CFG_CNTTH(0));
+ ret = pasemi_mac_setup_rx_resources(dev);
+ if (ret)
+ goto out_rx_resources;
- write_iob_reg(mac, PAS_IOB_DMA_TXCH_CFG(mac->dma_txch),
- PAS_IOB_DMA_TXCH_CFG_CNTTH(128));
+ mac->tx = pasemi_mac_setup_tx_resources(dev);
- /* Clear out any residual packet count state from firmware */
- pasemi_mac_restart_rx_intr(mac);
- pasemi_mac_restart_tx_intr(mac);
+ if (!mac->tx)
+ goto out_tx_ring;
- /* 0xffffff is max value, about 16ms */
- write_iob_reg(mac, PAS_IOB_DMA_COM_TIMEOUTCFG,
- PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT(0xffffff));
+ /* 0x3ff with 33MHz clock is about 31us */
+ write_iob_reg(PAS_IOB_DMA_COM_TIMEOUTCFG,
+ PAS_IOB_DMA_COM_TIMEOUTCFG_TCNT(0x3ff));
- ret = pasemi_mac_setup_rx_resources(dev);
- if (ret)
- goto out_rx_resources;
+ write_iob_reg(PAS_IOB_DMA_RXCH_CFG(mac->rx->chan.chno),
+ PAS_IOB_DMA_RXCH_CFG_CNTTH(256));
- ret = pasemi_mac_setup_tx_resources(dev);
- if (ret)
- goto out_tx_resources;
+ write_iob_reg(PAS_IOB_DMA_TXCH_CFG(mac->tx->chan.chno),
+ PAS_IOB_DMA_TXCH_CFG_CNTTH(32));
write_mac_reg(mac, PAS_MAC_IPC_CHNL,
- PAS_MAC_IPC_CHNL_DCHNO(mac->dma_rxch) |
- PAS_MAC_IPC_CHNL_BCH(mac->dma_rxch));
+ PAS_MAC_IPC_CHNL_DCHNO(mac->rx->chan.chno) |
+ PAS_MAC_IPC_CHNL_BCH(mac->rx->chan.chno));
/* enable rx if */
- write_dma_reg(mac, PAS_DMA_RXINT_RCMDSTA(mac->dma_if),
- PAS_DMA_RXINT_RCMDSTA_EN |
- PAS_DMA_RXINT_RCMDSTA_DROPS_M |
- PAS_DMA_RXINT_RCMDSTA_BP |
- PAS_DMA_RXINT_RCMDSTA_OO |
- PAS_DMA_RXINT_RCMDSTA_BT);
+ write_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if),
+ PAS_DMA_RXINT_RCMDSTA_EN |
+ PAS_DMA_RXINT_RCMDSTA_DROPS_M |
+ PAS_DMA_RXINT_RCMDSTA_BP |
+ PAS_DMA_RXINT_RCMDSTA_OO |
+ PAS_DMA_RXINT_RCMDSTA_BT);
/* enable rx channel */
- write_dma_reg(mac, PAS_DMA_RXCHAN_CCMDSTA(mac->dma_rxch),
- PAS_DMA_RXCHAN_CCMDSTA_EN |
- PAS_DMA_RXCHAN_CCMDSTA_DU |
- PAS_DMA_RXCHAN_CCMDSTA_OD |
- PAS_DMA_RXCHAN_CCMDSTA_FD |
- PAS_DMA_RXCHAN_CCMDSTA_DT);
+ pasemi_dma_start_chan(&rx_ring(mac)->chan, PAS_DMA_RXCHAN_CCMDSTA_DU |
+ PAS_DMA_RXCHAN_CCMDSTA_OD |
+ PAS_DMA_RXCHAN_CCMDSTA_FD |
+ PAS_DMA_RXCHAN_CCMDSTA_DT);
/* enable tx channel */
- write_dma_reg(mac, PAS_DMA_TXCHAN_TCMDSTA(mac->dma_txch),
- PAS_DMA_TXCHAN_TCMDSTA_EN |
- PAS_DMA_TXCHAN_TCMDSTA_SZ |
- PAS_DMA_TXCHAN_TCMDSTA_DB |
- PAS_DMA_TXCHAN_TCMDSTA_DE |
- PAS_DMA_TXCHAN_TCMDSTA_DA);
+ pasemi_dma_start_chan(&tx_ring(mac)->chan, PAS_DMA_TXCHAN_TCMDSTA_SZ |
+ PAS_DMA_TXCHAN_TCMDSTA_DB |
+ PAS_DMA_TXCHAN_TCMDSTA_DE |
+ PAS_DMA_TXCHAN_TCMDSTA_DA);
pasemi_mac_replenish_rx_ring(dev, RX_RING_SIZE);
- write_dma_reg(mac, PAS_DMA_RXCHAN_INCR(mac->dma_rxch), RX_RING_SIZE>>1);
+ write_dma_reg(PAS_DMA_RXCHAN_INCR(rx_ring(mac)->chan.chno),
+ RX_RING_SIZE>>1);
+
+ /* Clear out any residual packet count state from firmware */
+ pasemi_mac_restart_rx_intr(mac);
+ pasemi_mac_restart_tx_intr(mac);
- flags = PAS_MAC_CFG_PCFG_S1 | PAS_MAC_CFG_PCFG_PE |
- PAS_MAC_CFG_PCFG_PR | PAS_MAC_CFG_PCFG_CE;
+ flags = PAS_MAC_CFG_PCFG_S1 | PAS_MAC_CFG_PCFG_PR | PAS_MAC_CFG_PCFG_CE;
if (mac->type == MAC_TYPE_GMAC)
flags |= PAS_MAC_CFG_PCFG_TSR_1G | PAS_MAC_CFG_PCFG_SPD_1G;
@@ -979,55 +1084,63 @@ static int pasemi_mac_open(struct net_device *dev)
write_mac_reg(mac, PAS_MAC_CFG_PCFG, flags);
ret = pasemi_mac_phy_init(dev);
- /* Some configs don't have PHYs (XAUI etc), so don't complain about
- * failed init due to -ENODEV.
- */
- if (ret && ret != -ENODEV)
- dev_warn(&mac->pdev->dev, "phy init failed: %d\n", ret);
+ if (ret) {
+ /* Since we won't get link notification, just enable RX */
+ pasemi_mac_intf_enable(mac);
+ if (mac->type == MAC_TYPE_GMAC) {
+ /* Warn for missing PHY on SGMII (1Gig) ports */
+ dev_warn(&mac->pdev->dev,
+ "PHY init failed: %d.\n", ret);
+ dev_warn(&mac->pdev->dev,
+ "Defaulting to 1Gbit full duplex\n");
+ }
+ }
netif_start_queue(dev);
napi_enable(&mac->napi);
- /* Interrupts are a bit different for our DMA controller: While
- * it's got one a regular PCI device header, the interrupt there
- * is really the base of the range it's using. Each tx and rx
- * channel has it's own interrupt source.
- */
-
- base_irq = virq_to_hw(mac->dma_pdev->irq);
+ snprintf(mac->tx_irq_name, sizeof(mac->tx_irq_name), "%s tx",
+ dev->name);
- mac->tx_irq = irq_create_mapping(NULL, base_irq + mac->dma_txch);
- mac->rx_irq = irq_create_mapping(NULL, base_irq + 20 + mac->dma_txch);
-
- ret = request_irq(mac->tx_irq, &pasemi_mac_tx_intr, IRQF_DISABLED,
- mac->tx->irq_name, dev);
+ ret = request_irq(mac->tx->chan.irq, &pasemi_mac_tx_intr, IRQF_DISABLED,
+ mac->tx_irq_name, mac->tx);
if (ret) {
dev_err(&mac->pdev->dev, "request_irq of irq %d failed: %d\n",
- base_irq + mac->dma_txch, ret);
+ mac->tx->chan.irq, ret);
goto out_tx_int;
}
- ret = request_irq(mac->rx_irq, &pasemi_mac_rx_intr, IRQF_DISABLED,
- mac->rx->irq_name, dev);
+ snprintf(mac->rx_irq_name, sizeof(mac->rx_irq_name), "%s rx",
+ dev->name);
+
+ ret = request_irq(mac->rx->chan.irq, &pasemi_mac_rx_intr, IRQF_DISABLED,
+ mac->rx_irq_name, mac->rx);
if (ret) {
dev_err(&mac->pdev->dev, "request_irq of irq %d failed: %d\n",
- base_irq + 20 + mac->dma_rxch, ret);
+ mac->rx->chan.irq, ret);
goto out_rx_int;
}
if (mac->phydev)
phy_start(mac->phydev);
+ init_timer(&mac->tx->clean_timer);
+ mac->tx->clean_timer.function = pasemi_mac_tx_timer;
+ mac->tx->clean_timer.data = (unsigned long)mac->tx;
+ mac->tx->clean_timer.expires = jiffies+HZ;
+ add_timer(&mac->tx->clean_timer);
+
return 0;
out_rx_int:
- free_irq(mac->tx_irq, dev);
+ free_irq(mac->tx->chan.irq, mac->tx);
out_tx_int:
napi_disable(&mac->napi);
netif_stop_queue(dev);
- pasemi_mac_free_tx_resources(dev);
-out_tx_resources:
- pasemi_mac_free_rx_resources(dev);
+out_tx_ring:
+ if (mac->tx)
+ pasemi_mac_free_tx_resources(mac);
+ pasemi_mac_free_rx_resources(mac);
out_rx_resources:
return ret;
@@ -1040,46 +1153,53 @@ static int pasemi_mac_close(struct net_device *dev)
struct pasemi_mac *mac = netdev_priv(dev);
unsigned int sta;
int retries;
+ int rxch, txch;
+
+ rxch = rx_ring(mac)->chan.chno;
+ txch = tx_ring(mac)->chan.chno;
if (mac->phydev) {
phy_stop(mac->phydev);
phy_disconnect(mac->phydev);
}
+ del_timer_sync(&mac->tx->clean_timer);
+
netif_stop_queue(dev);
napi_disable(&mac->napi);
- sta = read_dma_reg(mac, PAS_DMA_RXINT_RCMDSTA(mac->dma_if));
+ sta = read_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if));
if (sta & (PAS_DMA_RXINT_RCMDSTA_BP |
PAS_DMA_RXINT_RCMDSTA_OO |
PAS_DMA_RXINT_RCMDSTA_BT))
printk(KERN_DEBUG "pasemi_mac: rcmdsta error: 0x%08x\n", sta);
- sta = read_dma_reg(mac, PAS_DMA_RXCHAN_CCMDSTA(mac->dma_rxch));
+ sta = read_dma_reg(PAS_DMA_RXCHAN_CCMDSTA(rxch));
if (sta & (PAS_DMA_RXCHAN_CCMDSTA_DU |
PAS_DMA_RXCHAN_CCMDSTA_OD |
PAS_DMA_RXCHAN_CCMDSTA_FD |
PAS_DMA_RXCHAN_CCMDSTA_DT))
printk(KERN_DEBUG "pasemi_mac: ccmdsta error: 0x%08x\n", sta);
- sta = read_dma_reg(mac, PAS_DMA_TXCHAN_TCMDSTA(mac->dma_txch));
- if (sta & (PAS_DMA_TXCHAN_TCMDSTA_SZ |
- PAS_DMA_TXCHAN_TCMDSTA_DB |
- PAS_DMA_TXCHAN_TCMDSTA_DE |
- PAS_DMA_TXCHAN_TCMDSTA_DA))
+ sta = read_dma_reg(PAS_DMA_TXCHAN_TCMDSTA(txch));
+ if (sta & (PAS_DMA_TXCHAN_TCMDSTA_SZ | PAS_DMA_TXCHAN_TCMDSTA_DB |
+ PAS_DMA_TXCHAN_TCMDSTA_DE | PAS_DMA_TXCHAN_TCMDSTA_DA))
printk(KERN_DEBUG "pasemi_mac: tcmdsta error: 0x%08x\n", sta);
/* Clean out any pending buffers */
- pasemi_mac_clean_tx(mac);
- pasemi_mac_clean_rx(mac, RX_RING_SIZE);
+ pasemi_mac_clean_tx(tx_ring(mac));
+ pasemi_mac_clean_rx(rx_ring(mac), RX_RING_SIZE);
/* Disable interface */
- write_dma_reg(mac, PAS_DMA_TXCHAN_TCMDSTA(mac->dma_txch), PAS_DMA_TXCHAN_TCMDSTA_ST);
- write_dma_reg(mac, PAS_DMA_RXINT_RCMDSTA(mac->dma_if), PAS_DMA_RXINT_RCMDSTA_ST);
- write_dma_reg(mac, PAS_DMA_RXCHAN_CCMDSTA(mac->dma_rxch), PAS_DMA_RXCHAN_CCMDSTA_ST);
+ write_dma_reg(PAS_DMA_TXCHAN_TCMDSTA(txch),
+ PAS_DMA_TXCHAN_TCMDSTA_ST);
+ write_dma_reg( PAS_DMA_RXINT_RCMDSTA(mac->dma_if),
+ PAS_DMA_RXINT_RCMDSTA_ST);
+ write_dma_reg(PAS_DMA_RXCHAN_CCMDSTA(rxch),
+ PAS_DMA_RXCHAN_CCMDSTA_ST);
for (retries = 0; retries < MAX_RETRIES; retries++) {
- sta = read_dma_reg(mac, PAS_DMA_TXCHAN_TCMDSTA(mac->dma_txch));
+ sta = read_dma_reg(PAS_DMA_TXCHAN_TCMDSTA(rxch));
if (!(sta & PAS_DMA_TXCHAN_TCMDSTA_ACT))
break;
cond_resched();
@@ -1089,7 +1209,7 @@ static int pasemi_mac_close(struct net_device *dev)
dev_err(&mac->dma_pdev->dev, "Failed to stop tx channel\n");
for (retries = 0; retries < MAX_RETRIES; retries++) {
- sta = read_dma_reg(mac, PAS_DMA_RXCHAN_CCMDSTA(mac->dma_rxch));
+ sta = read_dma_reg(PAS_DMA_RXCHAN_CCMDSTA(rxch));
if (!(sta & PAS_DMA_RXCHAN_CCMDSTA_ACT))
break;
cond_resched();
@@ -1099,7 +1219,7 @@ static int pasemi_mac_close(struct net_device *dev)
dev_err(&mac->dma_pdev->dev, "Failed to stop rx channel\n");
for (retries = 0; retries < MAX_RETRIES; retries++) {
- sta = read_dma_reg(mac, PAS_DMA_RXINT_RCMDSTA(mac->dma_if));
+ sta = read_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if));
if (!(sta & PAS_DMA_RXINT_RCMDSTA_ACT))
break;
cond_resched();
@@ -1112,16 +1232,16 @@ static int pasemi_mac_close(struct net_device *dev)
* stopping, since you can't disable when active.
*/
- write_dma_reg(mac, PAS_DMA_TXCHAN_TCMDSTA(mac->dma_txch), 0);
- write_dma_reg(mac, PAS_DMA_RXCHAN_CCMDSTA(mac->dma_rxch), 0);
- write_dma_reg(mac, PAS_DMA_RXINT_RCMDSTA(mac->dma_if), 0);
+ write_dma_reg(PAS_DMA_TXCHAN_TCMDSTA(txch), 0);
+ write_dma_reg(PAS_DMA_RXCHAN_CCMDSTA(rxch), 0);
+ write_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if), 0);
- free_irq(mac->tx_irq, dev);
- free_irq(mac->rx_irq, dev);
+ free_irq(mac->tx->chan.irq, mac->tx);
+ free_irq(mac->rx->chan.irq, mac->rx);
/* Free resources */
- pasemi_mac_free_rx_resources(dev);
- pasemi_mac_free_tx_resources(dev);
+ pasemi_mac_free_rx_resources(mac);
+ pasemi_mac_free_tx_resources(mac);
return 0;
}
@@ -1135,6 +1255,7 @@ static int pasemi_mac_start_tx(struct sk_buff *skb, struct net_device *dev)
unsigned int map_size[MAX_SKB_FRAGS+1];
unsigned long flags;
int i, nfrags;
+ int fill;
dflags = XCT_MACTX_O | XCT_MACTX_ST | XCT_MACTX_CRC_PAD;
@@ -1178,10 +1299,12 @@ static int pasemi_mac_start_tx(struct sk_buff *skb, struct net_device *dev)
mactx = dflags | XCT_MACTX_LLEN(skb->len);
- txring = mac->tx;
+ txring = tx_ring(mac);
spin_lock_irqsave(&txring->lock, flags);
+ fill = txring->next_to_fill;
+
/* Avoid stepping on the same cache line that the DMA controller
* is currently about to send, so leave at least 8 words available.
* Total free space needed is mactx + fragments + 8
@@ -1192,13 +1315,14 @@ static int pasemi_mac_start_tx(struct sk_buff *skb, struct net_device *dev)
goto out_err;
}
- TX_RING(mac, txring->next_to_fill) = mactx;
- txring->next_to_fill++;
- TX_RING_INFO(mac, txring->next_to_fill).skb = skb;
+ TX_DESC(txring, fill) = mactx;
+ TX_DESC_INFO(txring, fill).dma = nfrags;
+ fill++;
+ TX_DESC_INFO(txring, fill).skb = skb;
for (i = 0; i <= nfrags; i++) {
- TX_RING(mac, txring->next_to_fill+i) =
- XCT_PTR_LEN(map_size[i]) | XCT_PTR_ADDR(map[i]);
- TX_RING_INFO(mac, txring->next_to_fill+i).dma = map[i];
+ TX_DESC(txring, fill+i) =
+ XCT_PTR_LEN(map_size[i]) | XCT_PTR_ADDR(map[i]);
+ TX_DESC_INFO(txring, fill+i).dma = map[i];
}
/* We have to add an even number of 8-byte entries to the ring
@@ -1208,15 +1332,14 @@ static int pasemi_mac_start_tx(struct sk_buff *skb, struct net_device *dev)
if (nfrags & 1)
nfrags++;
- txring->next_to_fill = (txring->next_to_fill + nfrags + 1) &
- (TX_RING_SIZE-1);
+ txring->next_to_fill = (fill + nfrags + 1) & (TX_RING_SIZE-1);
dev->stats.tx_packets++;
dev->stats.tx_bytes += skb->len;
spin_unlock_irqrestore(&txring->lock, flags);
- write_dma_reg(mac, PAS_DMA_TXCHAN_INCR(mac->dma_txch), (nfrags+2) >> 1);
+ write_dma_reg(PAS_DMA_TXCHAN_INCR(txring->chan.chno), (nfrags+2) >> 1);
return NETDEV_TX_OK;
@@ -1232,7 +1355,7 @@ out_err_nolock:
static void pasemi_mac_set_rx_mode(struct net_device *dev)
{
- struct pasemi_mac *mac = netdev_priv(dev);
+ const struct pasemi_mac *mac = netdev_priv(dev);
unsigned int flags;
flags = read_mac_reg(mac, PAS_MAC_CFG_PCFG);
@@ -1253,88 +1376,21 @@ static int pasemi_mac_poll(struct napi_struct *napi, int budget)
struct net_device *dev = mac->netdev;
int pkts;
- pasemi_mac_clean_tx(mac);
- pkts = pasemi_mac_clean_rx(mac, budget);
+ pasemi_mac_clean_tx(tx_ring(mac));
+ pkts = pasemi_mac_clean_rx(rx_ring(mac), budget);
if (pkts < budget) {
/* all done, no more packets present */
netif_rx_complete(dev, napi);
pasemi_mac_restart_rx_intr(mac);
+ pasemi_mac_restart_tx_intr(mac);
}
return pkts;
}
-static void __iomem * __devinit map_onedev(struct pci_dev *p, int index)
-{
- struct device_node *dn;
- void __iomem *ret;
-
- dn = pci_device_to_OF_node(p);
- if (!dn)
- goto fallback;
-
- ret = of_iomap(dn, index);
- if (!ret)
- goto fallback;
-
- return ret;
-fallback:
- /* This is hardcoded and ugly, but we have some firmware versions
- * that don't provide the register space in the device tree. Luckily
- * they are at well-known locations so we can just do the math here.
- */
- return ioremap(0xe0000000 + (p->devfn << 12), 0x2000);
-}
-
-static int __devinit pasemi_mac_map_regs(struct pasemi_mac *mac)
-{
- struct resource res;
- struct device_node *dn;
- int err;
-
- mac->dma_pdev = pci_get_device(PCI_VENDOR_ID_PASEMI, 0xa007, NULL);
- if (!mac->dma_pdev) {
- dev_err(&mac->pdev->dev, "Can't find DMA Controller\n");
- return -ENODEV;
- }
-
- mac->iob_pdev = pci_get_device(PCI_VENDOR_ID_PASEMI, 0xa001, NULL);
- if (!mac->iob_pdev) {
- dev_err(&mac->pdev->dev, "Can't find I/O Bridge\n");
- return -ENODEV;
- }
-
- mac->regs = map_onedev(mac->pdev, 0);
- mac->dma_regs = map_onedev(mac->dma_pdev, 0);
- mac->iob_regs = map_onedev(mac->iob_pdev, 0);
-
- if (!mac->regs || !mac->dma_regs || !mac->iob_regs) {
- dev_err(&mac->pdev->dev, "Can't map registers\n");
- return -ENODEV;
- }
-
- /* The dma status structure is located in the I/O bridge, and
- * is cache coherent.
- */
- if (!dma_status) {
- dn = pci_device_to_OF_node(mac->iob_pdev);
- if (dn)
- err = of_address_to_resource(dn, 1, &res);
- if (!dn || err) {
- /* Fallback for old firmware */
- res.start = 0xfd800000;
- res.end = res.start + 0x1000;
- }
- dma_status = __ioremap(res.start, res.end-res.start, 0);
- }
-
- return 0;
-}
-
static int __devinit
pasemi_mac_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
- static int index = 0;
struct net_device *dev;
struct pasemi_mac *mac;
int err;
@@ -1362,20 +1418,46 @@ pasemi_mac_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
netif_napi_add(dev, &mac->napi, pasemi_mac_poll, 64);
- dev->features = NETIF_F_IP_CSUM | NETIF_F_LLTX | NETIF_F_SG;
+ dev->features = NETIF_F_IP_CSUM | NETIF_F_LLTX | NETIF_F_SG |
+ NETIF_F_HIGHDMA;
- /* These should come out of the device tree eventually */
- mac->dma_txch = index;
- mac->dma_rxch = index;
+ mac->lro_mgr.max_aggr = LRO_MAX_AGGR;
+ mac->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
+ mac->lro_mgr.lro_arr = mac->lro_desc;
+ mac->lro_mgr.get_skb_header = get_skb_hdr;
+ mac->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
+ mac->lro_mgr.dev = mac->netdev;
+ mac->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
+ mac->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
- /* We probe GMAC before XAUI, but the DMA interfaces are
- * in XAUI, GMAC order.
- */
- if (index < 4)
- mac->dma_if = index + 2;
- else
- mac->dma_if = index - 4;
- index++;
+
+ mac->dma_pdev = pci_get_device(PCI_VENDOR_ID_PASEMI, 0xa007, NULL);
+ if (!mac->dma_pdev) {
+ dev_err(&mac->pdev->dev, "Can't find DMA Controller\n");
+ err = -ENODEV;
+ goto out;
+ }
+
+ mac->iob_pdev = pci_get_device(PCI_VENDOR_ID_PASEMI, 0xa001, NULL);
+ if (!mac->iob_pdev) {
+ dev_err(&mac->pdev->dev, "Can't find I/O Bridge\n");
+ err = -ENODEV;
+ goto out;
+ }
+
+ /* get mac addr from device tree */
+ if (pasemi_get_mac_addr(mac) || !is_valid_ether_addr(mac->mac_addr)) {
+ err = -ENODEV;
+ goto out;
+ }
+ memcpy(dev->dev_addr, mac->mac_addr, sizeof(mac->mac_addr));
+
+ mac->dma_if = mac_to_intf(mac);
+ if (mac->dma_if < 0) {
+ dev_err(&mac->pdev->dev, "Can't map DMA interface\n");
+ err = -ENODEV;
+ goto out;
+ }
switch (pdev->device) {
case 0xa005:
@@ -1389,25 +1471,14 @@ pasemi_mac_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
goto out;
}
- /* get mac addr from device tree */
- if (pasemi_get_mac_addr(mac) || !is_valid_ether_addr(mac->mac_addr)) {
- err = -ENODEV;
- goto out;
- }
- memcpy(dev->dev_addr, mac->mac_addr, sizeof(mac->mac_addr));
-
dev->open = pasemi_mac_open;
dev->stop = pasemi_mac_close;
dev->hard_start_xmit = pasemi_mac_start_tx;
dev->set_multicast_list = pasemi_mac_set_rx_mode;
- err = pasemi_mac_map_regs(mac);
if (err)
goto out;
- mac->rx_status = &dma_status->rx_sta[mac->dma_rxch];
- mac->tx_status = &dma_status->tx_sta[mac->dma_txch];
-
mac->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
/* Enable most messages by default */
@@ -1420,11 +1491,9 @@ pasemi_mac_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
err);
goto out;
} else if netif_msg_probe(mac)
- printk(KERN_INFO "%s: PA Semi %s: intf %d, txch %d, rxch %d, "
- "hw addr %s\n",
+ printk(KERN_INFO "%s: PA Semi %s: intf %d, hw addr %s\n",
dev->name, mac->type == MAC_TYPE_GMAC ? "GMAC" : "XAUI",
- mac->dma_if, mac->dma_txch, mac->dma_rxch,
- print_mac(mac_buf, dev->dev_addr));
+ mac->dma_if, print_mac(mac_buf, dev->dev_addr));
return err;
@@ -1433,12 +1502,6 @@ out:
pci_dev_put(mac->iob_pdev);
if (mac->dma_pdev)
pci_dev_put(mac->dma_pdev);
- if (mac->dma_regs)
- iounmap(mac->dma_regs);
- if (mac->iob_regs)
- iounmap(mac->iob_regs);
- if (mac->regs)
- iounmap(mac->regs);
free_netdev(dev);
out_disable_device:
@@ -1463,9 +1526,8 @@ static void __devexit pasemi_mac_remove(struct pci_dev *pdev)
pci_dev_put(mac->dma_pdev);
pci_dev_put(mac->iob_pdev);
- iounmap(mac->regs);
- iounmap(mac->dma_regs);
- iounmap(mac->iob_regs);
+ pasemi_dma_free_chan(&mac->tx->chan);
+ pasemi_dma_free_chan(&mac->rx->chan);
pci_set_drvdata(pdev, NULL);
free_netdev(netdev);
@@ -1489,12 +1551,16 @@ static struct pci_driver pasemi_mac_driver = {
static void __exit pasemi_mac_cleanup_module(void)
{
pci_unregister_driver(&pasemi_mac_driver);
- __iounmap(dma_status);
- dma_status = NULL;
}
int pasemi_mac_init_module(void)
{
+ int err;
+
+ err = pasemi_dma_init();
+ if (err)
+ return err;
+
return pci_register_driver(&pasemi_mac_driver);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 08:05:34 +0100