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authorDavid Woodhouse <David.Woodhouse@intel.com>2009-01-27 20:02:30 +1100
committerDavid Woodhouse <David.Woodhouse@intel.com>2009-01-27 20:02:30 +1100
commit87ebb18627930ce005beba227ca267b5b5372e06 (patch)
treedfe5bd6eabf5f467f1f335d49571fac75e7fd07a /drivers/atm
parentd057f0a4efe441842adb2d263e50173b7e0e7e38 (diff)
downloadlinux-87ebb18627930ce005beba227ca267b5b5372e06.tar.bz2
solos: Handle new line status change packets, hook up to ATM layer info
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/atm')
-rw-r--r--drivers/atm/solos-pci.c93
1 files changed, 92 insertions, 1 deletions
diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c
index b0c4676296ba..4c87dfb01566 100644
--- a/drivers/atm/solos-pci.c
+++ b/drivers/atm/solos-pci.c
@@ -82,6 +82,7 @@ struct pkt_hdr {
#define PKT_COMMAND 1
#define PKT_POPEN 3
#define PKT_PCLOSE 4
+#define PKT_STATUS 5
struct solos_card {
void __iomem *config_regs;
@@ -275,6 +276,72 @@ static ssize_t solos_param_store(struct device *dev, struct device_attribute *at
return ret;
}
+static char *next_string(struct sk_buff *skb)
+{
+ int i = 0;
+ char *this = skb->data;
+
+ while (i < skb->len) {
+ if (this[i] == '\n') {
+ this[i] = 0;
+ skb_pull(skb, i);
+ return this;
+ }
+ }
+ return NULL;
+}
+
+/*
+ * Status packet has fields separated by \n, starting with a version number
+ * for the information therein. Fields are....
+ *
+ * packet version
+ * TxBitRate (version >= 1)
+ * RxBitRate (version >= 1)
+ * State (version >= 1)
+ */
+static int process_status(struct solos_card *card, int port, struct sk_buff *skb)
+{
+ char *str, *end;
+ int ver, rate_up, rate_down, state;
+
+ if (!card->atmdev[port])
+ return -ENODEV;
+
+ str = next_string(skb);
+ if (!str)
+ return -EIO;
+
+ ver = simple_strtol(str, NULL, 10);
+ if (ver < 1) {
+ dev_warn(&card->dev->dev, "Unexpected status interrupt version %d\n",
+ ver);
+ return -EIO;
+ }
+
+ str = next_string(skb);
+ rate_up = simple_strtol(str, &end, 10);
+ if (*end)
+ return -EIO;
+
+ str = next_string(skb);
+ rate_down = simple_strtol(str, &end, 10);
+ if (*end)
+ return -EIO;
+
+ str = next_string(skb);
+ if (!strcmp(str, "Showtime"))
+ state = ATM_PHY_SIG_FOUND;
+ else state = ATM_PHY_SIG_LOST;
+
+ card->atmdev[port]->link_rate = rate_down;
+ card->atmdev[port]->signal = state;
+
+ dev_info(&card->dev->dev, "ATM state: '%s', %d/%d kb/s up/down.\n",
+ str, rate_up/1000, rate_down/1000);
+ return 0;
+}
+
static int process_command(struct solos_card *card, int port, struct sk_buff *skb)
{
struct solos_param *prm;
@@ -512,7 +579,7 @@ void solos_bh(unsigned long card_arg)
size = le16_to_cpu(header.size);
- skb = alloc_skb(size, GFP_ATOMIC);
+ skb = alloc_skb(size + 1, GFP_ATOMIC);
if (!skb) {
if (net_ratelimit())
dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n");
@@ -547,6 +614,11 @@ void solos_bh(unsigned long card_arg)
atomic_inc(&vcc->stats->rx);
break;
+ case PKT_STATUS:
+ process_status(card, port, skb);
+ dev_kfree_skb(skb);
+ break;
+
case PKT_COMMAND:
default: /* FIXME: Not really, surely? */
if (process_command(card, port, skb))
@@ -996,6 +1068,9 @@ static int atm_init(struct solos_card *card)
int i;
for (i = 0; i < card->nr_ports; i++) {
+ struct sk_buff *skb;
+ struct pkt_hdr *header;
+
skb_queue_head_init(&card->tx_queue[i]);
skb_queue_head_init(&card->cli_queue[i]);
@@ -1016,6 +1091,22 @@ static int atm_init(struct solos_card *card)
card->atmdev[i]->ci_range.vci_bits = 16;
card->atmdev[i]->dev_data = card;
card->atmdev[i]->phy_data = (void *)(unsigned long)i;
+ card->atmdev[i]->signal = ATM_PHY_SIG_UNKNOWN;
+
+ skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
+ if (!skb) {
+ dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n");
+ continue;
+ }
+
+ header = (void *)skb_put(skb, sizeof(*header));
+
+ header->size = cpu_to_le16(0);
+ header->vpi = cpu_to_le16(0);
+ header->vci = cpu_to_le16(0);
+ header->type = cpu_to_le16(PKT_STATUS);
+
+ fpga_queue(card, i, skb, NULL);
}
return 0;
}