/*
+ * Copyright (c) 2006 QLogic, Inc. All rights reserved.
* Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
#include <linux/vmalloc.h>
#include "ipath_kernel.h"
-#include "ips_common.h"
+#include "ipath_common.h"
/*
* min buffers we want to have per port, after driver
/*
* Number of buffers reserved for driver (layered drivers and SMA
- * send). Reserved at end of buffer list.
+ * send). Reserved at end of buffer list. Initialized based on
+ * number of PIO buffers if not set via module interface.
+ * The problem with this is that it's global, but we'll use different
+ * numbers for different chip types. So the default value is not
+ * very useful. I've redefined it for the 1.3 release so that it's
+ * zero unless set by the user to something else, in which case we
+ * try to respect it.
*/
-static ushort ipath_kpiobufs = 32;
+static ushort ipath_kpiobufs;
static int ipath_set_kpiobufs(const char *val, struct kernel_param *kp);
-module_param_call(kpiobufs, ipath_set_kpiobufs, param_get_uint,
+module_param_call(kpiobufs, ipath_set_kpiobufs, param_get_ushort,
&ipath_kpiobufs, S_IWUSR | S_IRUGO);
MODULE_PARM_DESC(kpiobufs, "Set number of PIO buffers for driver");
"eager TID %u\n", e);
while (e != 0)
dev_kfree_skb(skbs[--e]);
+ vfree(skbs);
ret = -ENOMEM;
goto bail;
}
"only supports %u\n", ipath_cfgports,
dd->ipath_portcnt);
}
- dd->ipath_pd = kzalloc(sizeof(*dd->ipath_pd) * dd->ipath_cfgports,
+ /*
+ * Allocate full portcnt array, rather than just cfgports, because
+ * cleanup iterates across all possible ports.
+ */
+ dd->ipath_pd = kzalloc(sizeof(*dd->ipath_pd) * dd->ipath_portcnt,
GFP_KERNEL);
if (!dd->ipath_pd) {
pd->port_port = 0;
pd->port_cnt = 1;
/* The port 0 pkey table is used by the layer interface. */
- pd->port_pkeys[0] = IPS_DEFAULT_P_KEY;
+ pd->port_pkeys[0] = IPATH_DEFAULT_P_KEY;
dd->ipath_rcvtidcnt =
ipath_read_kreg32(dd, dd->ipath_kregs->kr_rcvtidcnt);
dd->ipath_rcvtidbase =
/* and its length */
dd->ipath_freezelen = L1_CACHE_BYTES - sizeof(dd->ipath_statusp[0]);
- if (dd->ipath_unit * 64 > (IPATH_PORT0_RCVHDRTAIL_SIZE - 64)) {
- ipath_dev_err(dd, "unit %u too large for port 0 "
- "rcvhdrtail buffer size\n", dd->ipath_unit);
- ret = -ENODEV;
- }
- else
- ret = 0;
+ ret = 0;
- /* so we can get current tail in ipath_kreceive(), per chip */
- dd->ipath_hdrqtailptr = &ipath_port0_rcvhdrtail[
- dd->ipath_unit * (64 / sizeof(*ipath_port0_rcvhdrtail))];
done:
return ret;
}
* Don't clear ipath_flags as 8bit mode was set before
* entering this func. However, we do set the linkstate to
* unknown, so we can watch for a transition.
+ * PRESENT is set because we want register reads to work,
+ * and the kernel infrastructure saw it in config space;
+ * We clear it if we have failures.
*/
- dd->ipath_flags |= IPATH_LINKUNK;
+ dd->ipath_flags |= IPATH_LINKUNK | IPATH_PRESENT;
dd->ipath_flags &= ~(IPATH_LINKACTIVE | IPATH_LINKARMED |
IPATH_LINKDOWN | IPATH_LINKINIT);
|| (dd->ipath_uregbase & 0xffffffff) == 0xffffffff) {
ipath_dev_err(dd, "Register read failures from chip, "
"giving up initialization\n");
+ dd->ipath_flags &= ~IPATH_PRESENT;
ret = -ENODEV;
goto done;
}
{
int ret = 0, i;
u32 val32, kpiobufs;
- u64 val, atmp;
+ u64 val;
struct ipath_portdata *pd = NULL; /* keep gcc4 happy */
+ gfp_t gfp_flags = GFP_USER | __GFP_COMP;
ret = init_housekeeping(dd, &pd, reinit);
if (ret)
*/
dd->ipath_pioavregs = ALIGN(val, sizeof(u64) * BITS_PER_BYTE / 2)
/ (sizeof(u64) * BITS_PER_BYTE / 2);
- if (!ipath_kpiobufs) /* have to have at least 1, for SMA */
- kpiobufs = ipath_kpiobufs = 1;
- else if ((dd->ipath_piobcnt2k + dd->ipath_piobcnt4k) <
- (dd->ipath_cfgports * IPATH_MIN_USER_PORT_BUFCNT)) {
- dev_info(&dd->pcidev->dev, "Too few PIO buffers (%u) "
- "for %u ports to have %u each!\n",
- dd->ipath_piobcnt2k + dd->ipath_piobcnt4k,
- dd->ipath_cfgports, IPATH_MIN_USER_PORT_BUFCNT);
- kpiobufs = 1; /* reserve just the minimum for SMA/ether */
- } else
+ if (ipath_kpiobufs == 0) {
+ /* not set by user, or set explictly to default */
+ if ((dd->ipath_piobcnt2k + dd->ipath_piobcnt4k) > 128)
+ kpiobufs = 32;
+ else
+ kpiobufs = 16;
+ }
+ else
kpiobufs = ipath_kpiobufs;
if (kpiobufs >
goto done;
}
- val = ipath_port0_rcvhdrtail_dma + dd->ipath_unit * 64;
-
- /* verify that the alignment requirement was met */
- ipath_write_kreg_port(dd, dd->ipath_kregs->kr_rcvhdrtailaddr,
- 0, val);
- atmp = ipath_read_kreg64_port(
- dd, dd->ipath_kregs->kr_rcvhdrtailaddr, 0);
- if (val != atmp) {
- ipath_dev_err(dd, "Catastrophic software error, "
- "RcvHdrTailAddr0 written as %llx, "
- "read back as %llx from %x\n",
- (unsigned long long) val,
- (unsigned long long) atmp,
- dd->ipath_kregs->kr_rcvhdrtailaddr);
- ret = -EINVAL;
- goto done;
- }
-
ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvbthqp, IPATH_KD_QP);
/*
/* clear any interrups up to this point (ints still not enabled) */
ipath_write_kreg(dd, dd->ipath_kregs->kr_intclear, -1LL);
- ipath_stats.sps_lid[dd->ipath_unit] = dd->ipath_lid;
-
/*
* Set up the port 0 (kernel) rcvhdr q and egr TIDs. If doing
* re-init, the simplest way to handle this is to free
* existing, and re-allocate.
*/
- if (reinit)
- ipath_free_pddata(dd, 0, 0);
+ if (reinit) {
+ struct ipath_portdata *pd = dd->ipath_pd[0];
+ dd->ipath_pd[0] = NULL;
+ ipath_free_pddata(dd, pd);
+ }
dd->ipath_f_tidtemplate(dd);
ret = ipath_create_rcvhdrq(dd, pd);
- if (!ret)
+ if (!ret) {
+ dd->ipath_hdrqtailptr =
+ (volatile __le64 *)pd->port_rcvhdrtail_kvaddr;
ret = create_port0_egr(dd);
+ }
if (ret)
ipath_dev_err(dd, "failed to allocate port 0 (kernel) "
"rcvhdrq and/or egr bufs\n");
else
enable_chip(dd, pd, reinit);
+
+ if (!ret && !reinit) {
+ /* used when we close a port, for DMA already in flight at close */
+ dd->ipath_dummy_hdrq = dma_alloc_coherent(
+ &dd->pcidev->dev, pd->port_rcvhdrq_size,
+ &dd->ipath_dummy_hdrq_phys,
+ gfp_flags);
+ if (!dd->ipath_dummy_hdrq ) {
+ dev_info(&dd->pcidev->dev,
+ "Couldn't allocate 0x%lx bytes for dummy hdrq\n",
+ pd->port_rcvhdrq_size);
+ /* fallback to just 0'ing */
+ dd->ipath_dummy_hdrq_phys = 0UL;
+ }
+ }
+
/*
* cause retrigger of pending interrupts ignored during init,
* even if we had errors
done:
if (!ret) {
- ipath_get_guid(dd);
*dd->ipath_statusp |= IPATH_STATUS_CHIP_PRESENT;
if (!dd->ipath_f_intrsetup(dd)) {
/* now we can enable all interrupts from the chip */
git.openpandora.org / pandora-kernel.git / blobdiff