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path: root/drivers/infiniband/hw/ipath/ipath_driver.c
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Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_driver.c')
-rw-r--r--drivers/infiniband/hw/ipath/ipath_driver.c349
1 files changed, 242 insertions, 107 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c
index f98518d912b..2108466c7e3 100644
--- a/drivers/infiniband/hw/ipath/ipath_driver.c
+++ b/drivers/infiniband/hw/ipath/ipath_driver.c
@@ -39,7 +39,7 @@
#include <linux/vmalloc.h>
#include "ipath_kernel.h"
-#include "ipath_layer.h"
+#include "ipath_verbs.h"
#include "ipath_common.h"
static void ipath_update_pio_bufs(struct ipath_devdata *);
@@ -51,8 +51,6 @@ const char *ipath_get_unit_name(int unit)
return iname;
}
-EXPORT_SYMBOL_GPL(ipath_get_unit_name);
-
#define DRIVER_LOAD_MSG "QLogic " IPATH_DRV_NAME " loaded: "
#define PFX IPATH_DRV_NAME ": "
@@ -60,13 +58,13 @@ EXPORT_SYMBOL_GPL(ipath_get_unit_name);
* The size has to be longer than this string, so we can append
* board/chip information to it in the init code.
*/
-const char ipath_core_version[] = IPATH_IDSTR "\n";
+const char ib_ipath_version[] = IPATH_IDSTR "\n";
static struct idr unit_table;
DEFINE_SPINLOCK(ipath_devs_lock);
LIST_HEAD(ipath_dev_list);
-wait_queue_head_t ipath_sma_state_wait;
+wait_queue_head_t ipath_state_wait;
unsigned ipath_debug = __IPATH_INFO;
@@ -403,10 +401,10 @@ static int __devinit ipath_init_one(struct pci_dev *pdev,
/* setup the chip-specific functions, as early as possible. */
switch (ent->device) {
case PCI_DEVICE_ID_INFINIPATH_HT:
- ipath_init_ht400_funcs(dd);
+ ipath_init_iba6110_funcs(dd);
break;
case PCI_DEVICE_ID_INFINIPATH_PE800:
- ipath_init_pe800_funcs(dd);
+ ipath_init_iba6120_funcs(dd);
break;
default:
ipath_dev_err(dd, "Found unknown QLogic deviceid 0x%x, "
@@ -440,7 +438,13 @@ static int __devinit ipath_init_one(struct pci_dev *pdev,
}
dd->ipath_pcirev = rev;
+#if defined(__powerpc__)
+ /* There isn't a generic way to specify writethrough mappings */
+ dd->ipath_kregbase = __ioremap(addr, len,
+ (_PAGE_NO_CACHE|_PAGE_WRITETHRU));
+#else
dd->ipath_kregbase = ioremap_nocache(addr, len);
+#endif
if (!dd->ipath_kregbase) {
ipath_dbg("Unable to map io addr %llx to kvirt, failing\n",
@@ -503,7 +507,7 @@ static int __devinit ipath_init_one(struct pci_dev *pdev,
ipathfs_add_device(dd);
ipath_user_add(dd);
ipath_diag_add(dd);
- ipath_layer_add(dd);
+ ipath_register_ib_device(dd);
goto bail;
@@ -532,7 +536,7 @@ static void __devexit ipath_remove_one(struct pci_dev *pdev)
return;
dd = pci_get_drvdata(pdev);
- ipath_layer_remove(dd);
+ ipath_unregister_ib_device(dd->verbs_dev);
ipath_diag_remove(dd);
ipath_user_remove(dd);
ipathfs_remove_device(dd);
@@ -607,21 +611,23 @@ void ipath_disarm_piobufs(struct ipath_devdata *dd, unsigned first,
*
* wait up to msecs milliseconds for IB link state change to occur for
* now, take the easy polling route. Currently used only by
- * ipath_layer_set_linkstate. Returns 0 if state reached, otherwise
+ * ipath_set_linkstate. Returns 0 if state reached, otherwise
* -ETIMEDOUT state can have multiple states set, for any of several
* transitions.
*/
-int ipath_wait_linkstate(struct ipath_devdata *dd, u32 state, int msecs)
+static int ipath_wait_linkstate(struct ipath_devdata *dd, u32 state,
+ int msecs)
{
- dd->ipath_sma_state_wanted = state;
- wait_event_interruptible_timeout(ipath_sma_state_wait,
+ dd->ipath_state_wanted = state;
+ wait_event_interruptible_timeout(ipath_state_wait,
(dd->ipath_flags & state),
msecs_to_jiffies(msecs));
- dd->ipath_sma_state_wanted = 0;
+ dd->ipath_state_wanted = 0;
if (!(dd->ipath_flags & state)) {
u64 val;
- ipath_cdbg(SMA, "Didn't reach linkstate %s within %u ms\n",
+ ipath_cdbg(VERBOSE, "Didn't reach linkstate %s within %u"
+ " ms\n",
/* test INIT ahead of DOWN, both can be set */
(state & IPATH_LINKINIT) ? "INIT" :
((state & IPATH_LINKDOWN) ? "DOWN" :
@@ -807,58 +813,6 @@ bail:
return skb;
}
-/**
- * ipath_rcv_layer - receive a packet for the layered (ethernet) driver
- * @dd: the infinipath device
- * @etail: the sk_buff number
- * @tlen: the total packet length
- * @hdr: the ethernet header
- *
- * Separate routine for better overall optimization
- */
-static void ipath_rcv_layer(struct ipath_devdata *dd, u32 etail,
- u32 tlen, struct ether_header *hdr)
-{
- u32 elen;
- u8 pad, *bthbytes;
- struct sk_buff *skb, *nskb;
-
- if (dd->ipath_port0_skbs &&
- hdr->sub_opcode == IPATH_ITH4X_OPCODE_ENCAP) {
- /*
- * Allocate a new sk_buff to replace the one we give
- * to the network stack.
- */
- nskb = ipath_alloc_skb(dd, GFP_ATOMIC);
- if (!nskb) {
- /* count OK packets that we drop */
- ipath_stats.sps_krdrops++;
- return;
- }
-
- bthbytes = (u8 *) hdr->bth;
- pad = (bthbytes[1] >> 4) & 3;
- /* +CRC32 */
- elen = tlen - (sizeof(*hdr) + pad + sizeof(u32));
-
- skb = dd->ipath_port0_skbs[etail];
- dd->ipath_port0_skbs[etail] = nskb;
- skb_put(skb, elen);
-
- dd->ipath_f_put_tid(dd, etail + (u64 __iomem *)
- ((char __iomem *) dd->ipath_kregbase
- + dd->ipath_rcvegrbase), 0,
- virt_to_phys(nskb->data));
-
- __ipath_layer_rcv(dd, hdr, skb);
-
- /* another ether packet received */
- ipath_stats.sps_ether_rpkts++;
- }
- else if (hdr->sub_opcode == IPATH_ITH4X_OPCODE_LID_ARP)
- __ipath_layer_rcv_lid(dd, hdr);
-}
-
static void ipath_rcv_hdrerr(struct ipath_devdata *dd,
u32 eflags,
u32 l,
@@ -972,26 +926,17 @@ reloop:
if (unlikely(eflags))
ipath_rcv_hdrerr(dd, eflags, l, etail, rc);
else if (etype == RCVHQ_RCV_TYPE_NON_KD) {
- int ret = __ipath_verbs_rcv(dd, rc + 1,
- ebuf, tlen);
- if (ret == -ENODEV)
- ipath_cdbg(VERBOSE,
- "received IB packet, "
- "not SMA (QP=%x)\n", qp);
- if (dd->ipath_lli_counter)
- dd->ipath_lli_counter--;
-
- } else if (etype == RCVHQ_RCV_TYPE_EAGER) {
- if (qp == IPATH_KD_QP &&
- bthbytes[0] == ipath_layer_rcv_opcode &&
- ebuf)
- ipath_rcv_layer(dd, etail, tlen,
- (struct ether_header *)hdr);
- else
- ipath_cdbg(PKT, "typ %x, opcode %x (eager, "
- "qp=%x), len %x; ignored\n",
- etype, bthbytes[0], qp, tlen);
+ ipath_ib_rcv(dd->verbs_dev, rc + 1, ebuf, tlen);
+ if (dd->ipath_lli_counter)
+ dd->ipath_lli_counter--;
+ ipath_cdbg(PKT, "typ %x, opcode %x (eager, "
+ "qp=%x), len %x; ignored\n",
+ etype, bthbytes[0], qp, tlen);
}
+ else if (etype == RCVHQ_RCV_TYPE_EAGER)
+ ipath_cdbg(PKT, "typ %x, opcode %x (eager, "
+ "qp=%x), len %x; ignored\n",
+ etype, bthbytes[0], qp, tlen);
else if (etype == RCVHQ_RCV_TYPE_EXPECTED)
ipath_dbg("Bug: Expected TID, opcode %x; ignored\n",
be32_to_cpu(hdr->bth[0]) & 0xff);
@@ -1024,7 +969,8 @@ reloop:
*/
if (l == hdrqtail || (i && !(i&0xf))) {
u64 lval;
- if (l == hdrqtail) /* PE-800 interrupt only on last */
+ if (l == hdrqtail)
+ /* request IBA6120 interrupt only on last */
lval = dd->ipath_rhdrhead_intr_off | l;
else
lval = l;
@@ -1038,7 +984,7 @@ reloop:
}
if (!dd->ipath_rhdrhead_intr_off && !reloop) {
- /* HT-400 workaround; we can have a race clearing chip
+ /* IBA6110 workaround; we can have a race clearing chip
* interrupt with another interrupt about to be delivered,
* and can clear it before it is delivered on the GPIO
* workaround. By doing the extra check here for the
@@ -1211,7 +1157,7 @@ int ipath_setrcvhdrsize(struct ipath_devdata *dd, unsigned rhdrsize)
*
* do appropriate marking as busy, etc.
* returns buffer number if one found (>=0), negative number is error.
- * Used by ipath_sma_send_pkt and ipath_layer_send
+ * Used by ipath_layer_send
*/
u32 __iomem *ipath_getpiobuf(struct ipath_devdata *dd, u32 * pbufnum)
{
@@ -1317,13 +1263,6 @@ rescan:
goto bail;
}
- if (updated)
- /*
- * ran out of bufs, now some (at least this one we just
- * got) are now available, so tell the layered driver.
- */
- __ipath_layer_intr(dd, IPATH_LAYER_INT_SEND_CONTINUE);
-
/*
* set next starting place. Since it's just an optimization,
* it doesn't matter who wins on this, so no locking
@@ -1500,7 +1439,7 @@ int ipath_waitfor_mdio_cmdready(struct ipath_devdata *dd)
return ret;
}
-void ipath_set_ib_lstate(struct ipath_devdata *dd, int which)
+static void ipath_set_ib_lstate(struct ipath_devdata *dd, int which)
{
static const char *what[4] = {
[0] = "DOWN",
@@ -1511,7 +1450,7 @@ void ipath_set_ib_lstate(struct ipath_devdata *dd, int which)
int linkcmd = (which >> INFINIPATH_IBCC_LINKCMD_SHIFT) &
INFINIPATH_IBCC_LINKCMD_MASK;
- ipath_cdbg(SMA, "Trying to move unit %u to %s, current ltstate "
+ ipath_cdbg(VERBOSE, "Trying to move unit %u to %s, current ltstate "
"is %s\n", dd->ipath_unit,
what[linkcmd],
ipath_ibcstatus_str[
@@ -1520,7 +1459,7 @@ void ipath_set_ib_lstate(struct ipath_devdata *dd, int which)
INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) &
INFINIPATH_IBCS_LINKTRAININGSTATE_MASK]);
/* flush all queued sends when going to DOWN or INIT, to be sure that
- * they don't block SMA and other MAD packets */
+ * they don't block MAD packets */
if (!linkcmd || linkcmd == INFINIPATH_IBCC_LINKCMD_INIT) {
ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl,
INFINIPATH_S_ABORT);
@@ -1534,6 +1473,180 @@ void ipath_set_ib_lstate(struct ipath_devdata *dd, int which)
dd->ipath_ibcctrl | which);
}
+int ipath_set_linkstate(struct ipath_devdata *dd, u8 newstate)
+{
+ u32 lstate;
+ int ret;
+
+ switch (newstate) {
+ case IPATH_IB_LINKDOWN:
+ ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKINITCMD_POLL <<
+ INFINIPATH_IBCC_LINKINITCMD_SHIFT);
+ /* don't wait */
+ ret = 0;
+ goto bail;
+
+ case IPATH_IB_LINKDOWN_SLEEP:
+ ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKINITCMD_SLEEP <<
+ INFINIPATH_IBCC_LINKINITCMD_SHIFT);
+ /* don't wait */
+ ret = 0;
+ goto bail;
+
+ case IPATH_IB_LINKDOWN_DISABLE:
+ ipath_set_ib_lstate(dd,
+ INFINIPATH_IBCC_LINKINITCMD_DISABLE <<
+ INFINIPATH_IBCC_LINKINITCMD_SHIFT);
+ /* don't wait */
+ ret = 0;
+ goto bail;
+
+ case IPATH_IB_LINKINIT:
+ if (dd->ipath_flags & IPATH_LINKINIT) {
+ ret = 0;
+ goto bail;
+ }
+ ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKCMD_INIT <<
+ INFINIPATH_IBCC_LINKCMD_SHIFT);
+ lstate = IPATH_LINKINIT;
+ break;
+
+ case IPATH_IB_LINKARM:
+ if (dd->ipath_flags & IPATH_LINKARMED) {
+ ret = 0;
+ goto bail;
+ }
+ if (!(dd->ipath_flags &
+ (IPATH_LINKINIT | IPATH_LINKACTIVE))) {
+ ret = -EINVAL;
+ goto bail;
+ }
+ ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKCMD_ARMED <<
+ INFINIPATH_IBCC_LINKCMD_SHIFT);
+ /*
+ * Since the port can transition to ACTIVE by receiving
+ * a non VL 15 packet, wait for either state.
+ */
+ lstate = IPATH_LINKARMED | IPATH_LINKACTIVE;
+ break;
+
+ case IPATH_IB_LINKACTIVE:
+ if (dd->ipath_flags & IPATH_LINKACTIVE) {
+ ret = 0;
+ goto bail;
+ }
+ if (!(dd->ipath_flags & IPATH_LINKARMED)) {
+ ret = -EINVAL;
+ goto bail;
+ }
+ ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKCMD_ACTIVE <<
+ INFINIPATH_IBCC_LINKCMD_SHIFT);
+ lstate = IPATH_LINKACTIVE;
+ break;
+
+ default:
+ ipath_dbg("Invalid linkstate 0x%x requested\n", newstate);
+ ret = -EINVAL;
+ goto bail;
+ }
+ ret = ipath_wait_linkstate(dd, lstate, 2000);
+
+bail:
+ return ret;
+}
+
+/**
+ * ipath_set_mtu - set the MTU
+ * @dd: the infinipath device
+ * @arg: the new MTU
+ *
+ * we can handle "any" incoming size, the issue here is whether we
+ * need to restrict our outgoing size. For now, we don't do any
+ * sanity checking on this, and we don't deal with what happens to
+ * programs that are already running when the size changes.
+ * NOTE: changing the MTU will usually cause the IBC to go back to
+ * link initialize (IPATH_IBSTATE_INIT) state...
+ */
+int ipath_set_mtu(struct ipath_devdata *dd, u16 arg)
+{
+ u32 piosize;
+ int changed = 0;
+ int ret;
+
+ /*
+ * mtu is IB data payload max. It's the largest power of 2 less
+ * than piosize (or even larger, since it only really controls the
+ * largest we can receive; we can send the max of the mtu and
+ * piosize). We check that it's one of the valid IB sizes.
+ */
+ if (arg != 256 && arg != 512 && arg != 1024 && arg != 2048 &&
+ arg != 4096) {
+ ipath_dbg("Trying to set invalid mtu %u, failing\n", arg);
+ ret = -EINVAL;
+ goto bail;
+ }
+ if (dd->ipath_ibmtu == arg) {
+ ret = 0; /* same as current */
+ goto bail;
+ }
+
+ piosize = dd->ipath_ibmaxlen;
+ dd->ipath_ibmtu = arg;
+
+ if (arg >= (piosize - IPATH_PIO_MAXIBHDR)) {
+ /* Only if it's not the initial value (or reset to it) */
+ if (piosize != dd->ipath_init_ibmaxlen) {
+ dd->ipath_ibmaxlen = piosize;
+ changed = 1;
+ }
+ } else if ((arg + IPATH_PIO_MAXIBHDR) != dd->ipath_ibmaxlen) {
+ piosize = arg + IPATH_PIO_MAXIBHDR;
+ ipath_cdbg(VERBOSE, "ibmaxlen was 0x%x, setting to 0x%x "
+ "(mtu 0x%x)\n", dd->ipath_ibmaxlen, piosize,
+ arg);
+ dd->ipath_ibmaxlen = piosize;
+ changed = 1;
+ }
+
+ if (changed) {
+ /*
+ * set the IBC maxpktlength to the size of our pio
+ * buffers in words
+ */
+ u64 ibc = dd->ipath_ibcctrl;
+ ibc &= ~(INFINIPATH_IBCC_MAXPKTLEN_MASK <<
+ INFINIPATH_IBCC_MAXPKTLEN_SHIFT);
+
+ piosize = piosize - 2 * sizeof(u32); /* ignore pbc */
+ dd->ipath_ibmaxlen = piosize;
+ piosize /= sizeof(u32); /* in words */
+ /*
+ * for ICRC, which we only send in diag test pkt mode, and
+ * we don't need to worry about that for mtu
+ */
+ piosize += 1;
+
+ ibc |= piosize << INFINIPATH_IBCC_MAXPKTLEN_SHIFT;
+ dd->ipath_ibcctrl = ibc;
+ ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl,
+ dd->ipath_ibcctrl);
+ dd->ipath_f_tidtemplate(dd);
+ }
+
+ ret = 0;
+
+bail:
+ return ret;
+}
+
+int ipath_set_lid(struct ipath_devdata *dd, u32 arg, u8 lmc)
+{
+ dd->ipath_lid = arg;
+ dd->ipath_lmc = lmc;
+
+ return 0;
+}
+
/**
* ipath_read_kreg64_port - read a device's per-port 64-bit kernel register
* @dd: the infinipath device
@@ -1637,13 +1750,6 @@ void ipath_shutdown_device(struct ipath_devdata *dd)
ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKINITCMD_DISABLE <<
INFINIPATH_IBCC_LINKINITCMD_SHIFT);
- /*
- * we are shutting down, so tell the layered driver. We don't do
- * this on just a link state change, much like ethernet, a cable
- * unplug, etc. doesn't change driver state
- */
- ipath_layer_intr(dd, IPATH_LAYER_INT_IF_DOWN);
-
/* disable IBC */
dd->ipath_control &= ~INFINIPATH_C_LINKENABLE;
ipath_write_kreg(dd, dd->ipath_kregs->kr_control,
@@ -1743,7 +1849,7 @@ static int __init infinipath_init(void)
{
int ret;
- ipath_dbg(KERN_INFO DRIVER_LOAD_MSG "%s", ipath_core_version);
+ ipath_dbg(KERN_INFO DRIVER_LOAD_MSG "%s", ib_ipath_version);
/*
* These must be called before the driver is registered with
@@ -1776,8 +1882,18 @@ static int __init infinipath_init(void)
goto bail_group;
}
+ ret = ipath_diagpkt_add();
+ if (ret < 0) {
+ printk(KERN_ERR IPATH_DRV_NAME ": Unable to create "
+ "diag data device: error %d\n", -ret);
+ goto bail_ipathfs;
+ }
+
goto bail;
+bail_ipathfs:
+ ipath_exit_ipathfs();
+
bail_group:
ipath_driver_remove_group(&ipath_driver.driver);
@@ -1888,6 +2004,8 @@ static void __exit infinipath_cleanup(void)
struct ipath_devdata *dd, *tmp;
unsigned long flags;
+ ipath_diagpkt_remove();
+
ipath_exit_ipathfs();
ipath_driver_remove_group(&ipath_driver.driver);
@@ -1998,5 +2116,22 @@ bail:
return ret;
}
+int ipath_set_rx_pol_inv(struct ipath_devdata *dd, u8 new_pol_inv)
+{
+ u64 val;
+ if ( new_pol_inv > INFINIPATH_XGXS_RX_POL_MASK ) {
+ return -1;
+ }
+ if ( dd->ipath_rx_pol_inv != new_pol_inv ) {
+ dd->ipath_rx_pol_inv = new_pol_inv;
+ val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig);
+ val &= ~(INFINIPATH_XGXS_RX_POL_MASK <<
+ INFINIPATH_XGXS_RX_POL_SHIFT);
+ val |= ((u64)dd->ipath_rx_pol_inv) <<
+ INFINIPATH_XGXS_RX_POL_SHIFT;
+ ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val);
+ }
+ return 0;
+}
module_init(infinipath_init);
module_exit(infinipath_cleanup);