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RDMA/nes: Fix adapter reset after PXE boot 

After PXE boot, the iw_nes driver does a full reset to ensure the card
is in a clean state.  However, it doesn't wait for firmware to
complete its work before issuing a port reset to enable the ports,
which leads to problems bringing up the ports.

The solution is to wait for firmware to complete its work before
proceeding with port reset.

This bug was flagged by Roland Dreier <rolandd@cisco.com>.

Cc: <stable@kernel.org>
Signed-off-by: Chien Tung <ctung@neteffect.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Chien Tung 2008-04-23 11:55:45 -07:00 committed by Roland Dreier
parent e447703123
commit bc5698f3ec
2 changed files with 13 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/infiniband/hw/nes/nes_cm.c
View File

@ -1849,8 +1849,10 @@ static int mini_cm_recv_pkt(struct nes_cm_core *cm_core, struct nes_vnic *nesvni
nfo.rem_addr = ntohl(iph->saddr);
nfo.rem_port = ntohs(tcph->source);
nes_debug(NES_DBG_CM, "Received packet: dest=0x%08X:0x%04X src=0x%08X:0x%04X\n",
iph->daddr, tcph->dest, iph->saddr, tcph->source);
nes_debug(NES_DBG_CM, "Received packet: dest=" NIPQUAD_FMT
":0x%04X src=" NIPQUAD_FMT ":0x%04X\n",
NIPQUAD(iph->daddr), tcph->dest,
NIPQUAD(iph->saddr), tcph->source);
/* note: this call is going to increment cm_node ref count */
cm_node = find_node(cm_core,

20
drivers/infiniband/hw/nes/nes_hw.c
View File

@ -636,6 +636,15 @@ static unsigned int nes_reset_adapter_ne020(struct nes_device *nesdev, u8 *OneG_
nes_debug(NES_DBG_INIT, "Did not see full soft reset done.\n");
return 0;
}
i = 0;
while ((nes_read_indexed(nesdev, NES_IDX_INT_CPU_STATUS) != 0x80) && i++ < 10000)
mdelay(1);
if (i >= 10000) {
printk(KERN_ERR PFX "Internal CPU not ready, status = %02X\n",
nes_read_indexed(nesdev, NES_IDX_INT_CPU_STATUS));
return 0;
}
}
/* port reset */
@ -684,17 +693,6 @@ static unsigned int nes_reset_adapter_ne020(struct nes_device *nesdev, u8 *OneG_
}
}
i = 0;
while ((nes_read_indexed(nesdev, NES_IDX_INT_CPU_STATUS) != 0x80) && i++ < 10000)
mdelay(1);
if (i >= 10000) {
printk(KERN_ERR PFX "Internal CPU not ready, status = %02X\n",
nes_read_indexed(nesdev, NES_IDX_INT_CPU_STATUS));
return 0;
}
return port_count;
}