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solos: Handle new line status change packets, hook up to ATM layer info 

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
hifive-unleashed-5.1
David Woodhouse 2009-01-27 20:02:30 +11:00
parent d057f0a4ef
commit 87ebb18627
1 changed files with 92 additions and 1 deletions
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93
drivers/atm/solos-pci.c
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@ -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;
}