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Commit 34b2aafe authored by Bryan O'Sullivan's avatar Bryan O'Sullivan Committed by Roland Dreier
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IB/ipath: simplify layering code 

A lot of ipath layer code was only called in one place. Now that the
ipath_core and ib_ipath drivers are merged, it's more sensible to simply
inline the simple stuff that the layer code was doing.
Signed-off-by: default avatarBryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent b1c1b6a3
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Showing with 1126 additions and 1329 deletions
drivers/infiniband/hw/ipath/ipath_diag.c
View file @ 34b2aafe
......@@ -45,7 +45,6 @@
#include <asm/uaccess.h>
#include "ipath_kernel.h"
#include "ipath_layer.h"
#include "ipath_common.h"
int ipath_diag_inuse;
......
drivers/infiniband/hw/ipath/ipath_driver.c
View file @ 34b2aafe
......@@ -39,7 +39,6 @@
#include <linux/vmalloc.h>
#include "ipath_kernel.h"
#include "ipath_layer.h"
#include "ipath_verbs.h"
#include "ipath_common.h"
......@@ -508,7 +507,6 @@ 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;
......@@ -539,7 +537,6 @@ static void __devexit ipath_remove_one(struct pci_dev *pdev)
dd = pci_get_drvdata(pdev);
ipath_unregister_ib_device(dd->verbs_dev);
ipath_layer_remove(dd);
ipath_diag_remove(dd);
ipath_user_remove(dd);
ipathfs_remove_device(dd);
......@@ -614,11 +611,12 @@ 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,
......@@ -814,58 +812,6 @@ struct sk_buff *ipath_alloc_skb(struct ipath_devdata *dd,
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,
......@@ -979,22 +925,17 @@ void ipath_kreceive(struct ipath_devdata *dd)
if (unlikely(eflags))
ipath_rcv_hdrerr(dd, eflags, l, etail, rc);
else if (etype == RCVHQ_RCV_TYPE_NON_KD) {
ipath_ib_rcv(dd->verbs_dev, rc + 1, ebuf,
tlen);
ipath_ib_rcv(dd->verbs_dev, rc + 1, ebuf, tlen);
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);
}
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);
......@@ -1320,13 +1261,6 @@ u32 __iomem *ipath_getpiobuf(struct ipath_devdata *dd, u32 * pbufnum)
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
......@@ -1503,7 +1437,7 @@ 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",
......@@ -1537,6 +1471,180 @@ 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
......@@ -1640,13 +1748,6 @@ 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,
......
drivers/infiniband/hw/ipath/ipath_file_ops.c
View file @ 34b2aafe
......@@ -39,7 +39,6 @@
#include <asm/pgtable.h>
#include "ipath_kernel.h"
#include "ipath_layer.h"
#include "ipath_common.h"
static int ipath_open(struct inode *, struct file *);
......
drivers/infiniband/hw/ipath/ipath_intr.c
View file @ 34b2aafe
......@@ -34,7 +34,6 @@
#include <linux/pci.h>
#include "ipath_kernel.h"
#include "ipath_layer.h"
#include "ipath_verbs.h"
#include "ipath_common.h"
......@@ -290,8 +289,6 @@ static void handle_e_ibstatuschanged(struct ipath_devdata *dd,
*dd->ipath_statusp |=
IPATH_STATUS_IB_READY | IPATH_STATUS_IB_CONF;
dd->ipath_f_setextled(dd, lstate, ltstate);
__ipath_layer_intr(dd, IPATH_LAYER_INT_IF_UP);
} else if ((val & IPATH_IBSTATE_MASK) == IPATH_IBSTATE_INIT) {
/*
* set INIT and DOWN. Down is checked by most of the other
......@@ -709,10 +706,6 @@ static void handle_layer_pioavail(struct ipath_devdata *dd)
{
int ret;
ret = __ipath_layer_intr(dd, IPATH_LAYER_INT_SEND_CONTINUE);
if (ret > 0)
goto set;
ret = ipath_ib_piobufavail(dd->verbs_dev);
if (ret > 0)
goto set;
......
drivers/infiniband/hw/ipath/ipath_kernel.h
View file @ 34b2aafe
......@@ -518,16 +518,6 @@ extern struct list_head ipath_dev_list;
extern spinlock_t ipath_devs_lock;
extern struct ipath_devdata *ipath_lookup(int unit);
extern u16 ipath_layer_rcv_opcode;
extern int __ipath_layer_intr(struct ipath_devdata *, u32);
extern int ipath_layer_intr(struct ipath_devdata *, u32);
extern int __ipath_layer_rcv(struct ipath_devdata *, void *,
struct sk_buff *);
extern int __ipath_layer_rcv_lid(struct ipath_devdata *, void *);
void ipath_layer_add(struct ipath_devdata *);
void ipath_layer_remove(struct ipath_devdata *);
int ipath_init_chip(struct ipath_devdata *, int);
int ipath_enable_wc(struct ipath_devdata *dd);
void ipath_disable_wc(struct ipath_devdata *dd);
......@@ -575,12 +565,13 @@ void ipath_free_pddata(struct ipath_devdata *, struct ipath_portdata *);
int ipath_parse_ushort(const char *str, unsigned short *valp);
int ipath_wait_linkstate(struct ipath_devdata *, u32, int);
void ipath_set_ib_lstate(struct ipath_devdata *, int);
void ipath_kreceive(struct ipath_devdata *);
int ipath_setrcvhdrsize(struct ipath_devdata *, unsigned);
int ipath_reset_device(int);
void ipath_get_faststats(unsigned long);
int ipath_set_linkstate(struct ipath_devdata *, u8);
int ipath_set_mtu(struct ipath_devdata *, u16);
int ipath_set_lid(struct ipath_devdata *, u32, u8);
/* for use in system calls, where we want to know device type, etc. */
#define port_fp(fp) ((struct ipath_portdata *) (fp)->private_data)
......
drivers/infiniband/hw/ipath/ipath_layer.c
View file @ 34b2aafe
......@@ -101,242 +101,14 @@ int __ipath_layer_rcv_lid(struct ipath_devdata *dd, void *hdr)
return ret;
}
int ipath_layer_set_linkstate(struct ipath_devdata *dd, u8 newstate)
void ipath_layer_lid_changed(struct ipath_devdata *dd)
{
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_layer_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_layer_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;
mutex_lock(&ipath_layer_mutex);
if (dd->ipath_layer.l_arg && layer_intr)
layer_intr(dd->ipath_layer.l_arg, IPATH_LAYER_INT_LID);
mutex_unlock(&ipath_layer_mutex);
return 0;
}
int ipath_layer_set_guid(struct ipath_devdata *dd, __be64 guid)
{
/* XXX - need to inform anyone who cares this just happened. */
dd->ipath_guid = guid;
return 0;
}
__be64 ipath_layer_get_guid(struct ipath_devdata *dd)
{
return dd->ipath_guid;
}
u32 ipath_layer_get_majrev(struct ipath_devdata *dd)
{
return dd->ipath_majrev;
}
u32 ipath_layer_get_minrev(struct ipath_devdata *dd)
{
return dd->ipath_minrev;
}
u32 ipath_layer_get_pcirev(struct ipath_devdata *dd)
{
return dd->ipath_pcirev;
}
u32 ipath_layer_get_flags(struct ipath_devdata *dd)
{
return dd->ipath_flags;
}
struct device *ipath_layer_get_device(struct ipath_devdata *dd)
{
return &dd->pcidev->dev;
}
u16 ipath_layer_get_deviceid(struct ipath_devdata *dd)
{
return dd->ipath_deviceid;
}
u32 ipath_layer_get_vendorid(struct ipath_devdata *dd)
{
return dd->ipath_vendorid;
}
u64 ipath_layer_get_lastibcstat(struct ipath_devdata *dd)
{
return dd->ipath_lastibcstat;
}
u32 ipath_layer_get_ibmtu(struct ipath_devdata *dd)
{
return dd->ipath_ibmtu;
}
void ipath_layer_add(struct ipath_devdata *dd)
......@@ -436,22 +208,6 @@ void ipath_layer_unregister(void)
EXPORT_SYMBOL_GPL(ipath_layer_unregister);
static void __ipath_verbs_timer(unsigned long arg)
{
struct ipath_devdata *dd = (struct ipath_devdata *) arg;
/*
* If port 0 receive packet interrupts are not available, or
* can be missed, poll the receive queue
*/
if (dd->ipath_flags & IPATH_POLL_RX_INTR)
ipath_kreceive(dd);
/* Handle verbs layer timeouts. */
ipath_ib_timer(dd->verbs_dev);
mod_timer(&dd->verbs_timer, jiffies + 1);
}
int ipath_layer_open(struct ipath_devdata *dd, u32 * pktmax)
{
int ret;
......@@ -540,380 +296,6 @@ u16 ipath_layer_get_bcast(struct ipath_devdata *dd)
EXPORT_SYMBOL_GPL(ipath_layer_get_bcast);
u32 ipath_layer_get_cr_errpkey(struct ipath_devdata *dd)
{
return ipath_read_creg32(dd, dd->ipath_cregs->cr_errpkey);
}
static void update_sge(struct ipath_sge_state *ss, u32 length)
{
struct ipath_sge *sge = &ss->sge;
sge->vaddr += length;
sge->length -= length;
sge->sge_length -= length;
if (sge->sge_length == 0) {
if (--ss->num_sge)
*sge = *ss->sg_list++;
} else if (sge->length == 0 && sge->mr != NULL) {
if (++sge->n >= IPATH_SEGSZ) {
if (++sge->m >= sge->mr->mapsz)
return;
sge->n = 0;
}
sge->vaddr = sge->mr->map[sge->m]->segs[sge->n].vaddr;
sge->length = sge->mr->map[sge->m]->segs[sge->n].length;
}
}
#ifdef __LITTLE_ENDIAN
static inline u32 get_upper_bits(u32 data, u32 shift)
{
return data >> shift;
}
static inline u32 set_upper_bits(u32 data, u32 shift)
{
return data << shift;
}
static inline u32 clear_upper_bytes(u32 data, u32 n, u32 off)
{
data <<= ((sizeof(u32) - n) * BITS_PER_BYTE);
data >>= ((sizeof(u32) - n - off) * BITS_PER_BYTE);
return data;
}
#else
static inline u32 get_upper_bits(u32 data, u32 shift)
{
return data << shift;
}
static inline u32 set_upper_bits(u32 data, u32 shift)
{
return data >> shift;
}
static inline u32 clear_upper_bytes(u32 data, u32 n, u32 off)
{
data >>= ((sizeof(u32) - n) * BITS_PER_BYTE);
data <<= ((sizeof(u32) - n - off) * BITS_PER_BYTE);
return data;
}
#endif
static void copy_io(u32 __iomem *piobuf, struct ipath_sge_state *ss,
u32 length)
{
u32 extra = 0;
u32 data = 0;
u32 last;
while (1) {
u32 len = ss->sge.length;
u32 off;
BUG_ON(len == 0);
if (len > length)
len = length;
if (len > ss->sge.sge_length)
len = ss->sge.sge_length;
/* If the source address is not aligned, try to align it. */
off = (unsigned long)ss->sge.vaddr & (sizeof(u32) - 1);
if (off) {
u32 *addr = (u32 *)((unsigned long)ss->sge.vaddr &
~(sizeof(u32) - 1));
u32 v = get_upper_bits(*addr, off * BITS_PER_BYTE);
u32 y;
y = sizeof(u32) - off;
if (len > y)
len = y;
if (len + extra >= sizeof(u32)) {
data |= set_upper_bits(v, extra *
BITS_PER_BYTE);
len = sizeof(u32) - extra;
if (len == length) {
last = data;
break;
}
__raw_writel(data, piobuf);
piobuf++;
extra = 0;
data = 0;
} else {
/* Clear unused upper bytes */
data |= clear_upper_bytes(v, len, extra);
if (len == length) {
last = data;
break;
}
extra += len;
}
} else if (extra) {
/* Source address is aligned. */
u32 *addr = (u32 *) ss->sge.vaddr;
int shift = extra * BITS_PER_BYTE;
int ushift = 32 - shift;
u32 l = len;
while (l >= sizeof(u32)) {
u32 v = *addr;
data |= set_upper_bits(v, shift);
__raw_writel(data, piobuf);
data = get_upper_bits(v, ushift);
piobuf++;
addr++;
l -= sizeof(u32);
}
/*
* We still have 'extra' number of bytes leftover.
*/
if (l) {
u32 v = *addr;
if (l + extra >= sizeof(u32)) {
data |= set_upper_bits(v, shift);
len -= l + extra - sizeof(u32);
if (len == length) {
last = data;
break;
}
__raw_writel(data, piobuf);
piobuf++;
extra = 0;
data = 0;
} else {
/* Clear unused upper bytes */
data |= clear_upper_bytes(v, l,
extra);
if (len == length) {
last = data;
break;
}
extra += l;
}
} else if (len == length) {
last = data;
break;
}
} else if (len == length) {
u32 w;
/*
* Need to round up for the last dword in the
* packet.
*/
w = (len + 3) >> 2;
__iowrite32_copy(piobuf, ss->sge.vaddr, w - 1);
piobuf += w - 1;
last = ((u32 *) ss->sge.vaddr)[w - 1];
break;
} else {
u32 w = len >> 2;
__iowrite32_copy(piobuf, ss->sge.vaddr, w);
piobuf += w;
extra = len & (sizeof(u32) - 1);
if (extra) {
u32 v = ((u32 *) ss->sge.vaddr)[w];
/* Clear unused upper bytes */
data = clear_upper_bytes(v, extra, 0);
}
}
update_sge(ss, len);
length -= len;
}
/* Update address before sending packet. */
update_sge(ss, length);
/* must flush early everything before trigger word */
ipath_flush_wc();
__raw_writel(last, piobuf);
/* be sure trigger word is written */
ipath_flush_wc();
}
/**
* ipath_verbs_send - send a packet from the verbs layer
* @dd: the infinipath device
* @hdrwords: the number of words in the header
* @hdr: the packet header
* @len: the length of the packet in bytes
* @ss: the SGE to send
*
* This is like ipath_sma_send_pkt() in that we need to be able to send
* packets after the chip is initialized (MADs) but also like
* ipath_layer_send_hdr() since its used by the verbs layer.
*/
int ipath_verbs_send(struct ipath_devdata *dd, u32 hdrwords,
u32 *hdr, u32 len, struct ipath_sge_state *ss)
{
u32 __iomem *piobuf;
u32 plen;
int ret;
/* +1 is for the qword padding of pbc */
plen = hdrwords + ((len + 3) >> 2) + 1;
if (unlikely((plen << 2) > dd->ipath_ibmaxlen)) {
ipath_dbg("packet len 0x%x too long, failing\n", plen);
ret = -EINVAL;
goto bail;
}
/* Get a PIO buffer to use. */
piobuf = ipath_getpiobuf(dd, NULL);
if (unlikely(piobuf == NULL)) {
ret = -EBUSY;
goto bail;
}
/*
* Write len to control qword, no flags.
* We have to flush after the PBC for correctness on some cpus
* or WC buffer can be written out of order.
*/
writeq(plen, piobuf);
ipath_flush_wc();
piobuf += 2;
if (len == 0) {
/*
* If there is just the header portion, must flush before
* writing last word of header for correctness, and after
* the last header word (trigger word).
*/
__iowrite32_copy(piobuf, hdr, hdrwords - 1);
ipath_flush_wc();
__raw_writel(hdr[hdrwords - 1], piobuf + hdrwords - 1);
ipath_flush_wc();
ret = 0;
goto bail;
}
__iowrite32_copy(piobuf, hdr, hdrwords);
piobuf += hdrwords;
/* The common case is aligned and contained in one segment. */
if (likely(ss->num_sge == 1 && len <= ss->sge.length &&
!((unsigned long)ss->sge.vaddr & (sizeof(u32) - 1)))) {
u32 w;
u32 *addr = (u32 *) ss->sge.vaddr;
/* Update address before sending packet. */
update_sge(ss, len);
/* Need to round up for the last dword in the packet. */
w = (len + 3) >> 2;
__iowrite32_copy(piobuf, addr, w - 1);
/* must flush early everything before trigger word */
ipath_flush_wc();
__raw_writel(addr[w - 1], piobuf + w - 1);
/* be sure trigger word is written */
ipath_flush_wc();
ret = 0;
goto bail;
}
copy_io(piobuf, ss, len);
ret = 0;
bail:
return ret;
}
int ipath_layer_snapshot_counters(struct ipath_devdata *dd, u64 *swords,
u64 *rwords, u64 *spkts, u64 *rpkts,
u64 *xmit_wait)
{
int ret;
if (!(dd->ipath_flags & IPATH_INITTED)) {
/* no hardware, freeze, etc. */
ipath_dbg("unit %u not usable\n", dd->ipath_unit);
ret = -EINVAL;
goto bail;
}
*swords = ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordsendcnt);
*rwords = ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordrcvcnt);
*spkts = ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktsendcnt);
*rpkts = ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktrcvcnt);
*xmit_wait = ipath_snap_cntr(dd, dd->ipath_cregs->cr_sendstallcnt);
ret = 0;
bail:
return ret;
}
/**
* ipath_layer_get_counters - get various chip counters
* @dd: the infinipath device
* @cntrs: counters are placed here
*
* Return the counters needed by recv_pma_get_portcounters().
*/
int ipath_layer_get_counters(struct ipath_devdata *dd,
struct ipath_layer_counters *cntrs)
{
int ret;
if (!(dd->ipath_flags & IPATH_INITTED)) {
/* no hardware, freeze, etc. */
ipath_dbg("unit %u not usable\n", dd->ipath_unit);
ret = -EINVAL;
goto bail;
}
cntrs->symbol_error_counter =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_ibsymbolerrcnt);
cntrs->link_error_recovery_counter =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_iblinkerrrecovcnt);
/*
* The link downed counter counts when the other side downs the
* connection. We add in the number of times we downed the link
* due to local link integrity errors to compensate.
*/
cntrs->link_downed_counter =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_iblinkdowncnt);
cntrs->port_rcv_errors =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_rxdroppktcnt) +
ipath_snap_cntr(dd, dd->ipath_cregs->cr_rcvovflcnt) +
ipath_snap_cntr(dd, dd->ipath_cregs->cr_portovflcnt) +
ipath_snap_cntr(dd, dd->ipath_cregs->cr_err_rlencnt) +
ipath_snap_cntr(dd, dd->ipath_cregs->cr_invalidrlencnt) +
ipath_snap_cntr(dd, dd->ipath_cregs->cr_erricrccnt) +
ipath_snap_cntr(dd, dd->ipath_cregs->cr_errvcrccnt) +
ipath_snap_cntr(dd, dd->ipath_cregs->cr_errlpcrccnt) +
ipath_snap_cntr(dd, dd->ipath_cregs->cr_badformatcnt);
cntrs->port_rcv_remphys_errors =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_rcvebpcnt);
cntrs->port_xmit_discards =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_unsupvlcnt);
cntrs->port_xmit_data =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordsendcnt);
cntrs->port_rcv_data =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordrcvcnt);
cntrs->port_xmit_packets =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktsendcnt);
cntrs->port_rcv_packets =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktrcvcnt);
cntrs->local_link_integrity_errors = dd->ipath_lli_errors;
cntrs->excessive_buffer_overrun_errors = 0; /* XXX */
ret = 0;
bail:
return ret;
}
int ipath_layer_want_buffer(struct ipath_devdata *dd)
{
set_bit(IPATH_S_PIOINTBUFAVAIL, &dd->ipath_sendctrl);
ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl,
dd->ipath_sendctrl);
return 0;
}
int ipath_layer_send_hdr(struct ipath_devdata *dd, struct ether_header *hdr)
{
int ret = 0;
......@@ -985,361 +367,3 @@ int ipath_layer_set_piointbufavail_int(struct ipath_devdata *dd)
}
EXPORT_SYMBOL_GPL(ipath_layer_set_piointbufavail_int);
int ipath_layer_enable_timer(struct ipath_devdata *dd)
{
/*
* HT-400 has a design flaw where the chip and kernel idea
* of the tail register don't always agree, and therefore we won't
* get an interrupt on the next packet received.
* If the board supports per packet receive interrupts, use it.
* Otherwise, the timer function periodically checks for packets
* to cover this case.
* Either way, the timer is needed for verbs layer related
* processing.
*/
if (dd->ipath_flags & IPATH_GPIO_INTR) {
ipath_write_kreg(dd, dd->ipath_kregs->kr_debugportselect,
0x2074076542310ULL);
/* Enable GPIO bit 2 interrupt */
ipath_write_kreg(dd, dd->ipath_kregs->kr_gpio_mask,
(u64) (1 << 2));
}
init_timer(&dd->verbs_timer);
dd->verbs_timer.function = __ipath_verbs_timer;
dd->verbs_timer.data = (unsigned long)dd;
dd->verbs_timer.expires = jiffies + 1;
add_timer(&dd->verbs_timer);
return 0;
}
int ipath_layer_disable_timer(struct ipath_devdata *dd)
{
/* Disable GPIO bit 2 interrupt */
if (dd->ipath_flags & IPATH_GPIO_INTR)
ipath_write_kreg(dd, dd->ipath_kregs->kr_gpio_mask, 0);
del_timer_sync(&dd->verbs_timer);
return 0;
}
/**
* ipath_layer_set_verbs_flags - set the verbs layer flags
* @dd: the infinipath device
* @flags: the flags to set
*/
int ipath_layer_set_verbs_flags(struct ipath_devdata *dd, unsigned flags)
{
struct ipath_devdata *ss;
unsigned long lflags;
spin_lock_irqsave(&ipath_devs_lock, lflags);
list_for_each_entry(ss, &ipath_dev_list, ipath_list) {
if (!(ss->ipath_flags & IPATH_INITTED))
continue;
if ((flags & IPATH_VERBS_KERNEL_SMA) &&
!(*ss->ipath_statusp & IPATH_STATUS_SMA))
*ss->ipath_statusp |= IPATH_STATUS_OIB_SMA;
else
*ss->ipath_statusp &= ~IPATH_STATUS_OIB_SMA;
}
spin_unlock_irqrestore(&ipath_devs_lock, lflags);
return 0;
}
/**
* ipath_layer_get_npkeys - return the size of the PKEY table for port 0
* @dd: the infinipath device
*/
unsigned ipath_layer_get_npkeys(struct ipath_devdata *dd)
{
return ARRAY_SIZE(dd->ipath_pd[0]->port_pkeys);
}
/**
* ipath_layer_get_pkey - return the indexed PKEY from the port 0 PKEY table
* @dd: the infinipath device
* @index: the PKEY index
*/
unsigned ipath_layer_get_pkey(struct ipath_devdata *dd, unsigned index)
{
unsigned ret;
if (index >= ARRAY_SIZE(dd->ipath_pd[0]->port_pkeys))
ret = 0;
else
ret = dd->ipath_pd[0]->port_pkeys[index];
return ret;
}
/**
* ipath_layer_get_pkeys - return the PKEY table for port 0
* @dd: the infinipath device
* @pkeys: the pkey table is placed here
*/
int ipath_layer_get_pkeys(struct ipath_devdata *dd, u16 * pkeys)
{
struct ipath_portdata *pd = dd->ipath_pd[0];
memcpy(pkeys, pd->port_pkeys, sizeof(pd->port_pkeys));
return 0;
}
/**
* rm_pkey - decrecment the reference count for the given PKEY
* @dd: the infinipath device
* @key: the PKEY index
*
* Return true if this was the last reference and the hardware table entry
* needs to be changed.
*/
static int rm_pkey(struct ipath_devdata *dd, u16 key)
{
int i;
int ret;
for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
if (dd->ipath_pkeys[i] != key)
continue;
if (atomic_dec_and_test(&dd->ipath_pkeyrefs[i])) {
dd->ipath_pkeys[i] = 0;
ret = 1;
goto bail;
}
break;
}
ret = 0;
bail:
return ret;
}
/**
* add_pkey - add the given PKEY to the hardware table
* @dd: the infinipath device
* @key: the PKEY
*
* Return an error code if unable to add the entry, zero if no change,
* or 1 if the hardware PKEY register needs to be updated.
*/
static int add_pkey(struct ipath_devdata *dd, u16 key)
{
int i;
u16 lkey = key & 0x7FFF;
int any = 0;
int ret;
if (lkey == 0x7FFF) {
ret = 0;
goto bail;
}
/* Look for an empty slot or a matching PKEY. */
for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
if (!dd->ipath_pkeys[i]) {
any++;
continue;
}
/* If it matches exactly, try to increment the ref count */
if (dd->ipath_pkeys[i] == key) {
if (atomic_inc_return(&dd->ipath_pkeyrefs[i]) > 1) {
ret = 0;
goto bail;
}
/* Lost the race. Look for an empty slot below. */
atomic_dec(&dd->ipath_pkeyrefs[i]);
any++;
}
/*
* It makes no sense to have both the limited and unlimited
* PKEY set at the same time since the unlimited one will
* disable the limited one.
*/
if ((dd->ipath_pkeys[i] & 0x7FFF) == lkey) {
ret = -EEXIST;
goto bail;
}
}
if (!any) {
ret = -EBUSY;
goto bail;
}
for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
if (!dd->ipath_pkeys[i] &&
atomic_inc_return(&dd->ipath_pkeyrefs[i]) == 1) {
/* for ipathstats, etc. */
ipath_stats.sps_pkeys[i] = lkey;
dd->ipath_pkeys[i] = key;
ret = 1;
goto bail;
}
}
ret = -EBUSY;
bail:
return ret;
}
/**
* ipath_layer_set_pkeys - set the PKEY table for port 0
* @dd: the infinipath device
* @pkeys: the PKEY table
*/
int ipath_layer_set_pkeys(struct ipath_devdata *dd, u16 * pkeys)
{
struct ipath_portdata *pd;
int i;
int changed = 0;
pd = dd->ipath_pd[0];
for (i = 0; i < ARRAY_SIZE(pd->port_pkeys); i++) {
u16 key = pkeys[i];
u16 okey = pd->port_pkeys[i];
if (key == okey)
continue;
/*
* The value of this PKEY table entry is changing.
* Remove the old entry in the hardware's array of PKEYs.
*/
if (okey & 0x7FFF)
changed |= rm_pkey(dd, okey);
if (key & 0x7FFF) {
int ret = add_pkey(dd, key);
if (ret < 0)
key = 0;
else
changed |= ret;
}
pd->port_pkeys[i] = key;
}
if (changed) {
u64 pkey;
pkey = (u64) dd->ipath_pkeys[0] |
((u64) dd->ipath_pkeys[1] << 16) |
((u64) dd->ipath_pkeys[2] << 32) |
((u64) dd->ipath_pkeys[3] << 48);
ipath_cdbg(VERBOSE, "p0 new pkey reg %llx\n",
(unsigned long long) pkey);
ipath_write_kreg(dd, dd->ipath_kregs->kr_partitionkey,
pkey);
}
return 0;
}
/**
* ipath_layer_get_linkdowndefaultstate - get the default linkdown state
* @dd: the infinipath device
*
* Returns zero if the default is POLL, 1 if the default is SLEEP.
*/
int ipath_layer_get_linkdowndefaultstate(struct ipath_devdata *dd)
{
return !!(dd->ipath_ibcctrl & INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE);
}
/**
* ipath_layer_set_linkdowndefaultstate - set the default linkdown state
* @dd: the infinipath device
* @sleep: the new state
*
* Note that this will only take effect when the link state changes.
*/
int ipath_layer_set_linkdowndefaultstate(struct ipath_devdata *dd,
int sleep)
{
if (sleep)
dd->ipath_ibcctrl |= INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE;
else
dd->ipath_ibcctrl &= ~INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE;
ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl,
dd->ipath_ibcctrl);
return 0;
}
int ipath_layer_get_phyerrthreshold(struct ipath_devdata *dd)
{
return (dd->ipath_ibcctrl >>
INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) &
INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK;
}
/**
* ipath_layer_set_phyerrthreshold - set the physical error threshold
* @dd: the infinipath device
* @n: the new threshold
*
* Note that this will only take effect when the link state changes.
*/
int ipath_layer_set_phyerrthreshold(struct ipath_devdata *dd, unsigned n)
{
unsigned v;
v = (dd->ipath_ibcctrl >> INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) &
INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK;
if (v != n) {
dd->ipath_ibcctrl &=
~(INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK <<
INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT);
dd->ipath_ibcctrl |=
(u64) n << INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT;
ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl,
dd->ipath_ibcctrl);
}
return 0;
}
int ipath_layer_get_overrunthreshold(struct ipath_devdata *dd)
{
return (dd->ipath_ibcctrl >>
INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT) &
INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK;
}
/**
* ipath_layer_set_overrunthreshold - set the overrun threshold
* @dd: the infinipath device
* @n: the new threshold
*
* Note that this will only take effect when the link state changes.
*/
int ipath_layer_set_overrunthreshold(struct ipath_devdata *dd, unsigned n)
{
unsigned v;
v = (dd->ipath_ibcctrl >> INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT) &
INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK;
if (v != n) {
dd->ipath_ibcctrl &=
~(INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK <<
INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT);
dd->ipath_ibcctrl |=
(u64) n << INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT;
ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl,
dd->ipath_ibcctrl);
}
return 0;
}
int ipath_layer_get_boardname(struct ipath_devdata *dd, char *name,
size_t namelen)
{
return dd->ipath_f_get_boardname(dd, name, namelen);
}
u32 ipath_layer_get_rcvhdrentsize(struct ipath_devdata *dd)
{
return dd->ipath_rcvhdrentsize;
}
drivers/infiniband/hw/ipath/ipath_layer.h
View file @ 34b2aafe
......@@ -40,73 +40,9 @@
*/
struct sk_buff;
struct ipath_sge_state;
struct ipath_devdata;
struct ether_header;
struct ipath_layer_counters {
u64 symbol_error_counter;
u64 link_error_recovery_counter;
u64 link_downed_counter;
u64 port_rcv_errors;
u64 port_rcv_remphys_errors;
u64 port_xmit_discards;
u64 port_xmit_data;
u64 port_rcv_data;
u64 port_xmit_packets;
u64 port_rcv_packets;
u32 local_link_integrity_errors;
u32 excessive_buffer_overrun_errors;
};
/*
* A segment is a linear region of low physical memory.
* XXX Maybe we should use phys addr here and kmap()/kunmap().
* Used by the verbs layer.
*/
struct ipath_seg {
void *vaddr;
size_t length;
};
/* The number of ipath_segs that fit in a page. */
#define IPATH_SEGSZ (PAGE_SIZE / sizeof (struct ipath_seg))
struct ipath_segarray {
struct ipath_seg segs[IPATH_SEGSZ];
};
struct ipath_mregion {
u64 user_base; /* User's address for this region */
u64 iova; /* IB start address of this region */
size_t length;
u32 lkey;
u32 offset; /* offset (bytes) to start of region */
int access_flags;
u32 max_segs; /* number of ipath_segs in all the arrays */
u32 mapsz; /* size of the map array */
struct ipath_segarray *map[0]; /* the segments */
};
/*
* These keep track of the copy progress within a memory region.
* Used by the verbs layer.
*/
struct ipath_sge {
struct ipath_mregion *mr;
void *vaddr; /* current pointer into the segment */
u32 sge_length; /* length of the SGE */
u32 length; /* remaining length of the segment */
u16 m; /* current index: mr->map[m] */
u16 n; /* current index: mr->map[m]->segs[n] */
};
struct ipath_sge_state {
struct ipath_sge *sg_list; /* next SGE to be used if any */
struct ipath_sge sge; /* progress state for the current SGE */
u8 num_sge;
};
int ipath_layer_register(void *(*l_add)(int, struct ipath_devdata *),
void (*l_remove)(void *),
int (*l_intr)(void *, u32),
......@@ -119,49 +55,9 @@ int ipath_layer_open(struct ipath_devdata *, u32 * pktmax);
u16 ipath_layer_get_lid(struct ipath_devdata *dd);
int ipath_layer_get_mac(struct ipath_devdata *dd, u8 *);
u16 ipath_layer_get_bcast(struct ipath_devdata *dd);
u32 ipath_layer_get_cr_errpkey(struct ipath_devdata *dd);
int ipath_layer_set_linkstate(struct ipath_devdata *dd, u8 state);
int ipath_layer_set_mtu(struct ipath_devdata *, u16);
int ipath_set_lid(struct ipath_devdata *, u32, u8);
int ipath_layer_send_hdr(struct ipath_devdata *dd,
struct ether_header *hdr);
int ipath_verbs_send(struct ipath_devdata *dd, u32 hdrwords,
u32 * hdr, u32 len, struct ipath_sge_state *ss);
int ipath_layer_set_piointbufavail_int(struct ipath_devdata *dd);
int ipath_layer_get_boardname(struct ipath_devdata *dd, char *name,
size_t namelen);
int ipath_layer_snapshot_counters(struct ipath_devdata *dd, u64 *swords,
u64 *rwords, u64 *spkts, u64 *rpkts,
u64 *xmit_wait);
int ipath_layer_get_counters(struct ipath_devdata *dd,
struct ipath_layer_counters *cntrs);
int ipath_layer_want_buffer(struct ipath_devdata *dd);
int ipath_layer_set_guid(struct ipath_devdata *, __be64 guid);
__be64 ipath_layer_get_guid(struct ipath_devdata *);
u32 ipath_layer_get_majrev(struct ipath_devdata *);
u32 ipath_layer_get_minrev(struct ipath_devdata *);
u32 ipath_layer_get_pcirev(struct ipath_devdata *);
u32 ipath_layer_get_flags(struct ipath_devdata *dd);
struct device *ipath_layer_get_device(struct ipath_devdata *dd);
u16 ipath_layer_get_deviceid(struct ipath_devdata *dd);
u32 ipath_layer_get_vendorid(struct ipath_devdata *);
u64 ipath_layer_get_lastibcstat(struct ipath_devdata *dd);
u32 ipath_layer_get_ibmtu(struct ipath_devdata *dd);
int ipath_layer_enable_timer(struct ipath_devdata *dd);
int ipath_layer_disable_timer(struct ipath_devdata *dd);
int ipath_layer_set_verbs_flags(struct ipath_devdata *dd, unsigned flags);
unsigned ipath_layer_get_npkeys(struct ipath_devdata *dd);
unsigned ipath_layer_get_pkey(struct ipath_devdata *dd, unsigned index);
int ipath_layer_get_pkeys(struct ipath_devdata *dd, u16 *pkeys);
int ipath_layer_set_pkeys(struct ipath_devdata *dd, u16 *pkeys);
int ipath_layer_get_linkdowndefaultstate(struct ipath_devdata *dd);
int ipath_layer_set_linkdowndefaultstate(struct ipath_devdata *dd,
int sleep);
int ipath_layer_get_phyerrthreshold(struct ipath_devdata *dd);
int ipath_layer_set_phyerrthreshold(struct ipath_devdata *dd, unsigned n);
int ipath_layer_get_overrunthreshold(struct ipath_devdata *dd);
int ipath_layer_set_overrunthreshold(struct ipath_devdata *dd, unsigned n);
u32 ipath_layer_get_rcvhdrentsize(struct ipath_devdata *dd);
/* ipath_ether interrupt values */
#define IPATH_LAYER_INT_IF_UP 0x2
......
drivers/infiniband/hw/ipath/ipath_mad.c
View file @ 34b2aafe
......@@ -101,15 +101,15 @@ static int recv_subn_get_nodeinfo(struct ib_smp *smp,
nip->num_ports = ibdev->phys_port_cnt;
/* This is already in network order */
nip->sys_guid = to_idev(ibdev)->sys_image_guid;
nip->node_guid = ipath_layer_get_guid(dd);
nip->node_guid = dd->ipath_guid;
nip->port_guid = nip->sys_guid;
nip->partition_cap = cpu_to_be16(ipath_layer_get_npkeys(dd));
nip->device_id = cpu_to_be16(ipath_layer_get_deviceid(dd));
majrev = ipath_layer_get_majrev(dd);
minrev = ipath_layer_get_minrev(dd);
nip->partition_cap = cpu_to_be16(ipath_get_npkeys(dd));
nip->device_id = cpu_to_be16(dd->ipath_deviceid);
majrev = dd->ipath_majrev;
minrev = dd->ipath_minrev;
nip->revision = cpu_to_be32((majrev << 16) | minrev);
nip->local_port_num = port;
vendor = ipath_layer_get_vendorid(dd);
vendor = dd->ipath_vendorid;
nip->vendor_id[0] = 0;
nip->vendor_id[1] = vendor >> 8;
nip->vendor_id[2] = vendor;
......@@ -133,13 +133,89 @@ static int recv_subn_get_guidinfo(struct ib_smp *smp,
*/
if (startgx == 0)
/* The first is a copy of the read-only HW GUID. */
*p = ipath_layer_get_guid(to_idev(ibdev)->dd);
*p = to_idev(ibdev)->dd->ipath_guid;
else
smp->status |= IB_SMP_INVALID_FIELD;
return reply(smp);
}
static int get_overrunthreshold(struct ipath_devdata *dd)
{
return (dd->ipath_ibcctrl >>
INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT) &
INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK;
}
/**
* set_overrunthreshold - set the overrun threshold
* @dd: the infinipath device
* @n: the new threshold
*
* Note that this will only take effect when the link state changes.
*/
static int set_overrunthreshold(struct ipath_devdata *dd, unsigned n)
{
unsigned v;
v = (dd->ipath_ibcctrl >> INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT) &
INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK;
if (v != n) {
dd->ipath_ibcctrl &=
~(INFINIPATH_IBCC_OVERRUNTHRESHOLD_MASK <<
INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT);
dd->ipath_ibcctrl |=
(u64) n << INFINIPATH_IBCC_OVERRUNTHRESHOLD_SHIFT;
ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl,
dd->ipath_ibcctrl);
}
return 0;
}
static int get_phyerrthreshold(struct ipath_devdata *dd)
{
return (dd->ipath_ibcctrl >>
INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) &
INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK;
}
/**
* set_phyerrthreshold - set the physical error threshold
* @dd: the infinipath device
* @n: the new threshold
*
* Note that this will only take effect when the link state changes.
*/
static int set_phyerrthreshold(struct ipath_devdata *dd, unsigned n)
{
unsigned v;
v = (dd->ipath_ibcctrl >> INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT) &
INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK;
if (v != n) {
dd->ipath_ibcctrl &=
~(INFINIPATH_IBCC_PHYERRTHRESHOLD_MASK <<
INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT);
dd->ipath_ibcctrl |=
(u64) n << INFINIPATH_IBCC_PHYERRTHRESHOLD_SHIFT;
ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl,
dd->ipath_ibcctrl);
}
return 0;
}
/**
* get_linkdowndefaultstate - get the default linkdown state
* @dd: the infinipath device
*
* Returns zero if the default is POLL, 1 if the default is SLEEP.
*/
static int get_linkdowndefaultstate(struct ipath_devdata *dd)
{
return !!(dd->ipath_ibcctrl & INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE);
}
static int recv_subn_get_portinfo(struct ib_smp *smp,
struct ib_device *ibdev, u8 port)
{
......@@ -166,7 +242,7 @@ static int recv_subn_get_portinfo(struct ib_smp *smp,
(dev->mkeyprot_resv_lmc >> 6) == 0)
pip->mkey = dev->mkey;
pip->gid_prefix = dev->gid_prefix;
lid = ipath_layer_get_lid(dev->dd);
lid = dev->dd->ipath_lid;
pip->lid = lid ? cpu_to_be16(lid) : IB_LID_PERMISSIVE;
pip->sm_lid = cpu_to_be16(dev->sm_lid);
pip->cap_mask = cpu_to_be32(dev->port_cap_flags);
......@@ -177,14 +253,14 @@ static int recv_subn_get_portinfo(struct ib_smp *smp,
pip->link_width_supported = 3; /* 1x or 4x */
pip->link_width_active = 2; /* 4x */
pip->linkspeed_portstate = 0x10; /* 2.5Gbps */
ibcstat = ipath_layer_get_lastibcstat(dev->dd);
ibcstat = dev->dd->ipath_lastibcstat;
pip->linkspeed_portstate |= ((ibcstat >> 4) & 0x3) + 1;
pip->portphysstate_linkdown =
(ipath_cvt_physportstate[ibcstat & 0xf] << 4) |
(ipath_layer_get_linkdowndefaultstate(dev->dd) ? 1 : 2);
(get_linkdowndefaultstate(dev->dd) ? 1 : 2);
pip->mkeyprot_resv_lmc = dev->mkeyprot_resv_lmc;
pip->linkspeedactive_enabled = 0x11; /* 2.5Gbps, 2.5Gbps */
switch (ipath_layer_get_ibmtu(dev->dd)) {
switch (dev->dd->ipath_ibmtu) {
case 4096:
mtu = IB_MTU_4096;
break;
......@@ -217,7 +293,7 @@ static int recv_subn_get_portinfo(struct ib_smp *smp,
pip->mkey_violations = cpu_to_be16(dev->mkey_violations);
/* P_KeyViolations are counted by hardware. */
pip->pkey_violations =
cpu_to_be16((ipath_layer_get_cr_errpkey(dev->dd) -
cpu_to_be16((ipath_get_cr_errpkey(dev->dd) -
dev->z_pkey_violations) & 0xFFFF);
pip->qkey_violations = cpu_to_be16(dev->qkey_violations);
/* Only the hardware GUID is supported for now */
......@@ -226,8 +302,8 @@ static int recv_subn_get_portinfo(struct ib_smp *smp,
/* 32.768 usec. response time (guessing) */
pip->resv_resptimevalue = 3;
pip->localphyerrors_overrunerrors =
(ipath_layer_get_phyerrthreshold(dev->dd) << 4) |
ipath_layer_get_overrunthreshold(dev->dd);
(get_phyerrthreshold(dev->dd) << 4) |
get_overrunthreshold(dev->dd);
/* pip->max_credit_hint; */
/* pip->link_roundtrip_latency[3]; */
......@@ -237,6 +313,20 @@ static int recv_subn_get_portinfo(struct ib_smp *smp,
return ret;
}
/**
* get_pkeys - return the PKEY table for port 0
* @dd: the infinipath device
* @pkeys: the pkey table is placed here
*/
static int get_pkeys(struct ipath_devdata *dd, u16 * pkeys)
{
struct ipath_portdata *pd = dd->ipath_pd[0];
memcpy(pkeys, pd->port_pkeys, sizeof(pd->port_pkeys));
return 0;
}
static int recv_subn_get_pkeytable(struct ib_smp *smp,
struct ib_device *ibdev)
{
......@@ -249,9 +339,9 @@ static int recv_subn_get_pkeytable(struct ib_smp *smp,
memset(smp->data, 0, sizeof(smp->data));
if (startpx == 0) {
struct ipath_ibdev *dev = to_idev(ibdev);
unsigned i, n = ipath_layer_get_npkeys(dev->dd);
unsigned i, n = ipath_get_npkeys(dev->dd);
ipath_layer_get_pkeys(dev->dd, p);
get_pkeys(dev->dd, p);
for (i = 0; i < n; i++)
q[i] = cpu_to_be16(p[i]);
......@@ -268,6 +358,24 @@ static int recv_subn_set_guidinfo(struct ib_smp *smp,
return recv_subn_get_guidinfo(smp, ibdev);
}
/**
* set_linkdowndefaultstate - set the default linkdown state
* @dd: the infinipath device
* @sleep: the new state
*
* Note that this will only take effect when the link state changes.
*/
static int set_linkdowndefaultstate(struct ipath_devdata *dd, int sleep)
{
if (sleep)
dd->ipath_ibcctrl |= INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE;
else
dd->ipath_ibcctrl &= ~INFINIPATH_IBCC_LINKDOWNDEFAULTSTATE;
ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl,
dd->ipath_ibcctrl);
return 0;
}
/**
* recv_subn_set_portinfo - set port information
* @smp: the incoming SM packet
......@@ -290,7 +398,7 @@ static int recv_subn_set_portinfo(struct ib_smp *smp,
u8 state;
u16 lstate;
u32 mtu;
int ret;
int ret, ore;
if (be32_to_cpu(smp->attr_mod) > ibdev->phys_port_cnt)
goto err;
......@@ -304,7 +412,7 @@ static int recv_subn_set_portinfo(struct ib_smp *smp,
dev->mkey_lease_period = be16_to_cpu(pip->mkey_lease_period);
lid = be16_to_cpu(pip->lid);
if (lid != ipath_layer_get_lid(dev->dd)) {
if (lid != dev->dd->ipath_lid) {
/* Must be a valid unicast LID address. */
if (lid == 0 || lid >= IPATH_MULTICAST_LID_BASE)
goto err;
......@@ -342,11 +450,11 @@ static int recv_subn_set_portinfo(struct ib_smp *smp,
case 0: /* NOP */
break;
case 1: /* SLEEP */
if (ipath_layer_set_linkdowndefaultstate(dev->dd, 1))
if (set_linkdowndefaultstate(dev->dd, 1))
goto err;
break;
case 2: /* POLL */
if (ipath_layer_set_linkdowndefaultstate(dev->dd, 0))
if (set_linkdowndefaultstate(dev->dd, 0))
goto err;
break;
default:
......@@ -376,7 +484,7 @@ static int recv_subn_set_portinfo(struct ib_smp *smp,
/* XXX We have already partially updated our state! */
goto err;
}
ipath_layer_set_mtu(dev->dd, mtu);
ipath_set_mtu(dev->dd, mtu);
dev->sm_sl = pip->neighbormtu_mastersmsl & 0xF;
......@@ -392,20 +500,16 @@ static int recv_subn_set_portinfo(struct ib_smp *smp,
* later.
*/
if (pip->pkey_violations == 0)
dev->z_pkey_violations =
ipath_layer_get_cr_errpkey(dev->dd);
dev->z_pkey_violations = ipath_get_cr_errpkey(dev->dd);
if (pip->qkey_violations == 0)
dev->qkey_violations = 0;
if (ipath_layer_set_phyerrthreshold(
dev->dd,
(pip->localphyerrors_overrunerrors >> 4) & 0xF))
ore = pip->localphyerrors_overrunerrors;
if (set_phyerrthreshold(dev->dd, (ore >> 4) & 0xF))
goto err;
if (ipath_layer_set_overrunthreshold(
dev->dd,
(pip->localphyerrors_overrunerrors & 0xF)))
if (set_overrunthreshold(dev->dd, (ore & 0xF)))
goto err;
dev->subnet_timeout = pip->clientrereg_resv_subnetto & 0x1F;
......@@ -423,7 +527,7 @@ static int recv_subn_set_portinfo(struct ib_smp *smp,
* is down or is being set to down.
*/
state = pip->linkspeed_portstate & 0xF;
flags = ipath_layer_get_flags(dev->dd);
flags = dev->dd->ipath_flags;
lstate = (pip->portphysstate_linkdown >> 4) & 0xF;
if (lstate && !(state == IB_PORT_DOWN || state == IB_PORT_NOP))
goto err;
......@@ -439,7 +543,7 @@ static int recv_subn_set_portinfo(struct ib_smp *smp,
/* FALLTHROUGH */
case IB_PORT_DOWN:
if (lstate == 0)
if (ipath_layer_get_linkdowndefaultstate(dev->dd))
if (get_linkdowndefaultstate(dev->dd))
lstate = IPATH_IB_LINKDOWN_SLEEP;
else
lstate = IPATH_IB_LINKDOWN;
......@@ -451,7 +555,7 @@ static int recv_subn_set_portinfo(struct ib_smp *smp,
lstate = IPATH_IB_LINKDOWN_DISABLE;
else
goto err;
ipath_layer_set_linkstate(dev->dd, lstate);
ipath_set_linkstate(dev->dd, lstate);
if (flags & IPATH_LINKACTIVE) {
event.event = IB_EVENT_PORT_ERR;
ib_dispatch_event(&event);
......@@ -460,7 +564,7 @@ static int recv_subn_set_portinfo(struct ib_smp *smp,
case IB_PORT_ARMED:
if (!(flags & (IPATH_LINKINIT | IPATH_LINKACTIVE)))
break;
ipath_layer_set_linkstate(dev->dd, IPATH_IB_LINKARM);
ipath_set_linkstate(dev->dd, IPATH_IB_LINKARM);
if (flags & IPATH_LINKACTIVE) {
event.event = IB_EVENT_PORT_ERR;
ib_dispatch_event(&event);
......@@ -469,7 +573,7 @@ static int recv_subn_set_portinfo(struct ib_smp *smp,
case IB_PORT_ACTIVE:
if (!(flags & IPATH_LINKARMED))
break;
ipath_layer_set_linkstate(dev->dd, IPATH_IB_LINKACTIVE);
ipath_set_linkstate(dev->dd, IPATH_IB_LINKACTIVE);
event.event = IB_EVENT_PORT_ACTIVE;
ib_dispatch_event(&event);
break;
......@@ -493,6 +597,152 @@ static int recv_subn_set_portinfo(struct ib_smp *smp,
return ret;
}
/**
* rm_pkey - decrecment the reference count for the given PKEY
* @dd: the infinipath device
* @key: the PKEY index
*
* Return true if this was the last reference and the hardware table entry
* needs to be changed.
*/
static int rm_pkey(struct ipath_devdata *dd, u16 key)
{
int i;
int ret;
for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
if (dd->ipath_pkeys[i] != key)
continue;
if (atomic_dec_and_test(&dd->ipath_pkeyrefs[i])) {
dd->ipath_pkeys[i] = 0;
ret = 1;
goto bail;
}
break;
}
ret = 0;
bail:
return ret;
}
/**
* add_pkey - add the given PKEY to the hardware table
* @dd: the infinipath device
* @key: the PKEY
*
* Return an error code if unable to add the entry, zero if no change,
* or 1 if the hardware PKEY register needs to be updated.
*/
static int add_pkey(struct ipath_devdata *dd, u16 key)
{
int i;
u16 lkey = key & 0x7FFF;
int any = 0;
int ret;
if (lkey == 0x7FFF) {
ret = 0;
goto bail;
}
/* Look for an empty slot or a matching PKEY. */
for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
if (!dd->ipath_pkeys[i]) {
any++;
continue;
}
/* If it matches exactly, try to increment the ref count */
if (dd->ipath_pkeys[i] == key) {
if (atomic_inc_return(&dd->ipath_pkeyrefs[i]) > 1) {
ret = 0;
goto bail;
}
/* Lost the race. Look for an empty slot below. */
atomic_dec(&dd->ipath_pkeyrefs[i]);
any++;
}
/*
* It makes no sense to have both the limited and unlimited
* PKEY set at the same time since the unlimited one will
* disable the limited one.
*/
if ((dd->ipath_pkeys[i] & 0x7FFF) == lkey) {
ret = -EEXIST;
goto bail;
}
}
if (!any) {
ret = -EBUSY;
goto bail;
}
for (i = 0; i < ARRAY_SIZE(dd->ipath_pkeys); i++) {
if (!dd->ipath_pkeys[i] &&
atomic_inc_return(&dd->ipath_pkeyrefs[i]) == 1) {
/* for ipathstats, etc. */
ipath_stats.sps_pkeys[i] = lkey;
dd->ipath_pkeys[i] = key;
ret = 1;
goto bail;
}
}
ret = -EBUSY;
bail:
return ret;
}
/**
* set_pkeys - set the PKEY table for port 0
* @dd: the infinipath device
* @pkeys: the PKEY table
*/
static int set_pkeys(struct ipath_devdata *dd, u16 *pkeys)
{
struct ipath_portdata *pd;
int i;
int changed = 0;
pd = dd->ipath_pd[0];
for (i = 0; i < ARRAY_SIZE(pd->port_pkeys); i++) {
u16 key = pkeys[i];
u16 okey = pd->port_pkeys[i];
if (key == okey)
continue;
/*
* The value of this PKEY table entry is changing.
* Remove the old entry in the hardware's array of PKEYs.
*/
if (okey & 0x7FFF)
changed |= rm_pkey(dd, okey);
if (key & 0x7FFF) {
int ret = add_pkey(dd, key);
if (ret < 0)
key = 0;
else
changed |= ret;
}
pd->port_pkeys[i] = key;
}
if (changed) {
u64 pkey;
pkey = (u64) dd->ipath_pkeys[0] |
((u64) dd->ipath_pkeys[1] << 16) |
((u64) dd->ipath_pkeys[2] << 32) |
((u64) dd->ipath_pkeys[3] << 48);
ipath_cdbg(VERBOSE, "p0 new pkey reg %llx\n",
(unsigned long long) pkey);
ipath_write_kreg(dd, dd->ipath_kregs->kr_partitionkey,
pkey);
}
return 0;
}
static int recv_subn_set_pkeytable(struct ib_smp *smp,
struct ib_device *ibdev)
{
......@@ -500,13 +750,12 @@ static int recv_subn_set_pkeytable(struct ib_smp *smp,
__be16 *p = (__be16 *) smp->data;
u16 *q = (u16 *) smp->data;
struct ipath_ibdev *dev = to_idev(ibdev);
unsigned i, n = ipath_layer_get_npkeys(dev->dd);
unsigned i, n = ipath_get_npkeys(dev->dd);
for (i = 0; i < n; i++)
q[i] = be16_to_cpu(p[i]);
if (startpx != 0 ||
ipath_layer_set_pkeys(dev->dd, q) != 0)
if (startpx != 0 || set_pkeys(dev->dd, q) != 0)
smp->status |= IB_SMP_INVALID_FIELD;
return recv_subn_get_pkeytable(smp, ibdev);
......@@ -844,10 +1093,10 @@ static int recv_pma_get_portcounters(struct ib_perf *pmp,
struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
pmp->data;
struct ipath_ibdev *dev = to_idev(ibdev);
struct ipath_layer_counters cntrs;
struct ipath_verbs_counters cntrs;
u8 port_select = p->port_select;
ipath_layer_get_counters(dev->dd, &cntrs);
ipath_get_counters(dev->dd, &cntrs);
/* Adjust counters for any resets done. */
cntrs.symbol_error_counter -= dev->z_symbol_error_counter;
......@@ -944,7 +1193,7 @@ static int recv_pma_get_portcounters_ext(struct ib_perf *pmp,
u64 swords, rwords, spkts, rpkts, xwait;
u8 port_select = p->port_select;
ipath_layer_snapshot_counters(dev->dd, &swords, &rwords, &spkts,
ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts,
&rpkts, &xwait);
/* Adjust counters for any resets done. */
......@@ -978,13 +1227,13 @@ static int recv_pma_set_portcounters(struct ib_perf *pmp,
struct ib_pma_portcounters *p = (struct ib_pma_portcounters *)
pmp->data;
struct ipath_ibdev *dev = to_idev(ibdev);
struct ipath_layer_counters cntrs;
struct ipath_verbs_counters cntrs;
/*
* Since the HW doesn't support clearing counters, we save the
* current count and subtract it from future responses.
*/
ipath_layer_get_counters(dev->dd, &cntrs);
ipath_get_counters(dev->dd, &cntrs);
if (p->counter_select & IB_PMA_SEL_SYMBOL_ERROR)
dev->z_symbol_error_counter = cntrs.symbol_error_counter;
......@@ -1041,7 +1290,7 @@ static int recv_pma_set_portcounters_ext(struct ib_perf *pmp,
struct ipath_ibdev *dev = to_idev(ibdev);
u64 swords, rwords, spkts, rpkts, xwait;
ipath_layer_snapshot_counters(dev->dd, &swords, &rwords, &spkts,
ipath_snapshot_counters(dev->dd, &swords, &rwords, &spkts,
&rpkts, &xwait);
if (p->counter_select & IB_PMA_SELX_PORT_XMIT_DATA)
......
drivers/infiniband/hw/ipath/ipath_mr.c
View file @ 34b2aafe
......@@ -36,6 +36,18 @@
#include "ipath_verbs.h"
/* Fast memory region */
struct ipath_fmr {
struct ib_fmr ibfmr;
u8 page_shift;
struct ipath_mregion mr; /* must be last */
};
static inline struct ipath_fmr *to_ifmr(struct ib_fmr *ibfmr)
{
return container_of(ibfmr, struct ipath_fmr, ibfmr);
}
/**
* ipath_get_dma_mr - get a DMA memory region
* @pd: protection domain for this memory region
......
drivers/infiniband/hw/ipath/ipath_qp.c
View file @ 34b2aafe
......@@ -461,7 +461,7 @@ int ipath_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
goto inval;
if (attr_mask & IB_QP_PKEY_INDEX)
if (attr->pkey_index >= ipath_layer_get_npkeys(dev->dd))
if (attr->pkey_index >= ipath_get_npkeys(dev->dd))
goto inval;
if (attr_mask & IB_QP_MIN_RNR_TIMER)
......@@ -644,6 +644,33 @@ __be32 ipath_compute_aeth(struct ipath_qp *qp)
return cpu_to_be32(aeth);
}
/**
* set_verbs_flags - set the verbs layer flags
* @dd: the infinipath device
* @flags: the flags to set
*/
static int set_verbs_flags(struct ipath_devdata *dd, unsigned flags)
{
struct ipath_devdata *ss;
unsigned long lflags;
spin_lock_irqsave(&ipath_devs_lock, lflags);
list_for_each_entry(ss, &ipath_dev_list, ipath_list) {
if (!(ss->ipath_flags & IPATH_INITTED))
continue;
if ((flags & IPATH_VERBS_KERNEL_SMA) &&
!(*ss->ipath_statusp & IPATH_STATUS_SMA))
*ss->ipath_statusp |= IPATH_STATUS_OIB_SMA;
else
*ss->ipath_statusp &= ~IPATH_STATUS_OIB_SMA;
}
spin_unlock_irqrestore(&ipath_devs_lock, lflags);
return 0;
}
/**
* ipath_create_qp - create a queue pair for a device
* @ibpd: the protection domain who's device we create the queue pair for
......@@ -760,8 +787,7 @@ struct ib_qp *ipath_create_qp(struct ib_pd *ibpd,
/* Tell the core driver that the kernel SMA is present. */
if (init_attr->qp_type == IB_QPT_SMI)
ipath_layer_set_verbs_flags(dev->dd,
IPATH_VERBS_KERNEL_SMA);
set_verbs_flags(dev->dd, IPATH_VERBS_KERNEL_SMA);
break;
default:
......@@ -838,7 +864,7 @@ int ipath_destroy_qp(struct ib_qp *ibqp)
/* Tell the core driver that the kernel SMA is gone. */
if (qp->ibqp.qp_type == IB_QPT_SMI)
ipath_layer_set_verbs_flags(dev->dd, 0);
set_verbs_flags(dev->dd, 0);
spin_lock_irqsave(&qp->s_lock, flags);
qp->state = IB_QPS_ERR;
......
drivers/infiniband/hw/ipath/ipath_rc.c
View file @ 34b2aafe
......@@ -32,7 +32,7 @@
*/
#include "ipath_verbs.h"
#include "ipath_common.h"
#include "ipath_kernel.h"
/* cut down ridiculously long IB macro names */
#define OP(x) IB_OPCODE_RC_##x
......@@ -540,7 +540,7 @@ static void send_rc_ack(struct ipath_qp *qp)
lrh0 = IPATH_LRH_GRH;
}
/* read pkey_index w/o lock (its atomic) */
bth0 = ipath_layer_get_pkey(dev->dd, qp->s_pkey_index);
bth0 = ipath_get_pkey(dev->dd, qp->s_pkey_index);
if (qp->r_nak_state)
ohdr->u.aeth = cpu_to_be32((qp->r_msn & IPATH_MSN_MASK) |
(qp->r_nak_state <<
......@@ -557,7 +557,7 @@ static void send_rc_ack(struct ipath_qp *qp)
hdr.lrh[0] = cpu_to_be16(lrh0);
hdr.lrh[1] = cpu_to_be16(qp->remote_ah_attr.dlid);
hdr.lrh[2] = cpu_to_be16(hwords + SIZE_OF_CRC);
hdr.lrh[3] = cpu_to_be16(ipath_layer_get_lid(dev->dd));
hdr.lrh[3] = cpu_to_be16(dev->dd->ipath_lid);
ohdr->bth[0] = cpu_to_be32(bth0);
ohdr->bth[1] = cpu_to_be32(qp->remote_qpn);
ohdr->bth[2] = cpu_to_be32(qp->r_ack_psn & IPATH_PSN_MASK);
......@@ -1323,8 +1323,7 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
* the eager header buffer size to 56 bytes so the last 4
* bytes of the BTH header (PSN) is in the data buffer.
*/
header_in_data =
ipath_layer_get_rcvhdrentsize(dev->dd) == 16;
header_in_data = dev->dd->ipath_rcvhdrentsize == 16;
if (header_in_data) {
psn = be32_to_cpu(((__be32 *) data)[0]);
data += sizeof(__be32);
......
drivers/infiniband/hw/ipath/ipath_ruc.c
View file @ 34b2aafe
......@@ -470,6 +470,15 @@ static void ipath_ruc_loopback(struct ipath_qp *sqp)
wake_up(&qp->wait);
}
static int want_buffer(struct ipath_devdata *dd)
{
set_bit(IPATH_S_PIOINTBUFAVAIL, &dd->ipath_sendctrl);
ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl,
dd->ipath_sendctrl);
return 0;
}
/**
* ipath_no_bufs_available - tell the layer driver we need buffers
* @qp: the QP that caused the problem
......@@ -486,7 +495,7 @@ void ipath_no_bufs_available(struct ipath_qp *qp, struct ipath_ibdev *dev)
list_add_tail(&qp->piowait, &dev->piowait);
spin_unlock_irqrestore(&dev->pending_lock, flags);
/*
* Note that as soon as ipath_layer_want_buffer() is called and
* Note that as soon as want_buffer() is called and
* possibly before it returns, ipath_ib_piobufavail()
* could be called. If we are still in the tasklet function,
* tasklet_hi_schedule() will not call us until the next time
......@@ -496,7 +505,7 @@ void ipath_no_bufs_available(struct ipath_qp *qp, struct ipath_ibdev *dev)
*/
clear_bit(IPATH_S_BUSY, &qp->s_flags);
tasklet_unlock(&qp->s_task);
ipath_layer_want_buffer(dev->dd);
want_buffer(dev->dd);
dev->n_piowait++;
}
......@@ -611,7 +620,7 @@ u32 ipath_make_grh(struct ipath_ibdev *dev, struct ib_grh *hdr,
hdr->hop_limit = grh->hop_limit;
/* The SGID is 32-bit aligned. */
hdr->sgid.global.subnet_prefix = dev->gid_prefix;
hdr->sgid.global.interface_id = ipath_layer_get_guid(dev->dd);
hdr->sgid.global.interface_id = dev->dd->ipath_guid;
hdr->dgid = grh->dgid;
/* GRH header size in 32-bit words. */
......@@ -643,8 +652,7 @@ void ipath_do_ruc_send(unsigned long data)
if (test_and_set_bit(IPATH_S_BUSY, &qp->s_flags))
goto bail;
if (unlikely(qp->remote_ah_attr.dlid ==
ipath_layer_get_lid(dev->dd))) {
if (unlikely(qp->remote_ah_attr.dlid == dev->dd->ipath_lid)) {
ipath_ruc_loopback(qp);
goto clear;
}
......@@ -711,8 +719,8 @@ void ipath_do_ruc_send(unsigned long data)
qp->s_hdr.lrh[1] = cpu_to_be16(qp->remote_ah_attr.dlid);
qp->s_hdr.lrh[2] = cpu_to_be16(qp->s_hdrwords + nwords +
SIZE_OF_CRC);
qp->s_hdr.lrh[3] = cpu_to_be16(ipath_layer_get_lid(dev->dd));
bth0 |= ipath_layer_get_pkey(dev->dd, qp->s_pkey_index);
qp->s_hdr.lrh[3] = cpu_to_be16(dev->dd->ipath_lid);
bth0 |= ipath_get_pkey(dev->dd, qp->s_pkey_index);
bth0 |= extra_bytes << 20;
ohdr->bth[0] = cpu_to_be32(bth0);
ohdr->bth[1] = cpu_to_be32(qp->remote_qpn);
......
drivers/infiniband/hw/ipath/ipath_sysfs.c
View file @ 34b2aafe
......@@ -35,7 +35,6 @@
#include <linux/pci.h>
#include "ipath_kernel.h"
#include "ipath_layer.h"
#include "ipath_common.h"
/**
......@@ -227,7 +226,6 @@ static ssize_t store_mlid(struct device *dev,
unit = dd->ipath_unit;
dd->ipath_mlid = mlid;
ipath_layer_intr(dd, IPATH_LAYER_INT_BCAST);
goto bail;
invalid:
......@@ -467,7 +465,7 @@ static ssize_t store_link_state(struct device *dev,
if (ret < 0)
goto invalid;
r = ipath_layer_set_linkstate(dd, state);
r = ipath_set_linkstate(dd, state);
if (r < 0) {
ret = r;
goto bail;
......@@ -502,7 +500,7 @@ static ssize_t store_mtu(struct device *dev,
if (ret < 0)
goto invalid;
r = ipath_layer_set_mtu(dd, mtu);
r = ipath_set_mtu(dd, mtu);
if (r < 0)
ret = r;
......
drivers/infiniband/hw/ipath/ipath_uc.c
View file @ 34b2aafe
......@@ -32,7 +32,7 @@
*/
#include "ipath_verbs.h"
#include "ipath_common.h"
#include "ipath_kernel.h"
/* cut down ridiculously long IB macro names */
#define OP(x) IB_OPCODE_UC_##x
......@@ -261,8 +261,7 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
* size to 56 bytes so the last 4 bytes of
* the BTH header (PSN) is in the data buffer.
*/
header_in_data =
ipath_layer_get_rcvhdrentsize(dev->dd) == 16;
header_in_data = dev->dd->ipath_rcvhdrentsize == 16;
if (header_in_data) {
psn = be32_to_cpu(((__be32 *) data)[0]);
data += sizeof(__be32);
......
drivers/infiniband/hw/ipath/ipath_ud.c
View file @ 34b2aafe
......@@ -353,7 +353,7 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr)
ss.num_sge++;
}
/* Check for invalid packet size. */
if (len > ipath_layer_get_ibmtu(dev->dd)) {
if (len > dev->dd->ipath_ibmtu) {
ret = -EINVAL;
goto bail;
}
......@@ -375,7 +375,7 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr)
dev->n_unicast_xmit++;
lid = ah_attr->dlid &
~((1 << (dev->mkeyprot_resv_lmc & 7)) - 1);
if (unlikely(lid == ipath_layer_get_lid(dev->dd))) {
if (unlikely(lid == dev->dd->ipath_lid)) {
/*
* Pass in an uninitialized ib_wc to save stack
* space.
......@@ -404,7 +404,7 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr)
qp->s_hdr.u.l.grh.sgid.global.subnet_prefix =
dev->gid_prefix;
qp->s_hdr.u.l.grh.sgid.global.interface_id =
ipath_layer_get_guid(dev->dd);
dev->dd->ipath_guid;
qp->s_hdr.u.l.grh.dgid = ah_attr->grh.dgid;
/*
* Don't worry about sending to locally attached multicast
......@@ -434,7 +434,7 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr)
qp->s_hdr.lrh[0] = cpu_to_be16(lrh0);
qp->s_hdr.lrh[1] = cpu_to_be16(ah_attr->dlid); /* DEST LID */
qp->s_hdr.lrh[2] = cpu_to_be16(hwords + nwords + SIZE_OF_CRC);
lid = ipath_layer_get_lid(dev->dd);
lid = dev->dd->ipath_lid;
if (lid) {
lid |= ah_attr->src_path_bits &
((1 << (dev->mkeyprot_resv_lmc & 7)) - 1);
......@@ -445,7 +445,7 @@ int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr)
bth0 |= 1 << 23;
bth0 |= extra_bytes << 20;
bth0 |= qp->ibqp.qp_type == IB_QPT_SMI ? IPATH_DEFAULT_P_KEY :
ipath_layer_get_pkey(dev->dd, qp->s_pkey_index);
ipath_get_pkey(dev->dd, qp->s_pkey_index);
ohdr->bth[0] = cpu_to_be32(bth0);
/*
* Use the multicast QP if the destination LID is a multicast LID.
......@@ -531,8 +531,7 @@ void ipath_ud_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
* the eager header buffer size to 56 bytes so the last 12
* bytes of the IB header is in the data buffer.
*/
header_in_data =
ipath_layer_get_rcvhdrentsize(dev->dd) == 16;
header_in_data = dev->dd->ipath_rcvhdrentsize == 16;
if (header_in_data) {
qkey = be32_to_cpu(((__be32 *) data)[1]);
src_qp = be32_to_cpu(((__be32 *) data)[2]);
......
drivers/infiniband/hw/ipath/ipath_verbs.c
View file @ 34b2aafe
......@@ -33,15 +33,13 @@
#include <rdma/ib_mad.h>
#include <rdma/ib_user_verbs.h>
#include <linux/io.h>
#include <linux/utsname.h>
#include "ipath_kernel.h"
#include "ipath_verbs.h"
#include "ipath_common.h"
/* Not static, because we don't want the compiler removing it */
const char ipath_verbs_version[] = "ipath_verbs " IPATH_IDSTR;
static unsigned int ib_ipath_qp_table_size = 251;
module_param_named(qp_table_size, ib_ipath_qp_table_size, uint, S_IRUGO);
MODULE_PARM_DESC(qp_table_size, "QP table size");
......@@ -109,10 +107,6 @@ module_param_named(max_srq_wrs, ib_ipath_max_srq_wrs,
uint, S_IWUSR | S_IRUGO);
MODULE_PARM_DESC(max_srq_wrs, "Maximum number of SRQ WRs support");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("QLogic <support@pathscale.com>");
MODULE_DESCRIPTION("QLogic InfiniPath driver");
const int ib_ipath_state_ops[IB_QPS_ERR + 1] = {
[IB_QPS_RESET] = 0,
[IB_QPS_INIT] = IPATH_POST_RECV_OK,
......@@ -125,6 +119,16 @@ const int ib_ipath_state_ops[IB_QPS_ERR + 1] = {
[IB_QPS_ERR] = 0,
};
struct ipath_ucontext {
struct ib_ucontext ibucontext;
};
static inline struct ipath_ucontext *to_iucontext(struct ib_ucontext
*ibucontext)
{
return container_of(ibucontext, struct ipath_ucontext, ibucontext);
}
/*
* Translate ib_wr_opcode into ib_wc_opcode.
*/
......@@ -400,7 +404,7 @@ void ipath_ib_rcv(struct ipath_ibdev *dev, void *rhdr, void *data,
lid = be16_to_cpu(hdr->lrh[1]);
if (lid < IPATH_MULTICAST_LID_BASE) {
lid &= ~((1 << (dev->mkeyprot_resv_lmc & 7)) - 1);
if (unlikely(lid != ipath_layer_get_lid(dev->dd))) {
if (unlikely(lid != dev->dd->ipath_lid)) {
dev->rcv_errors++;
goto bail;
}
......@@ -511,7 +515,7 @@ void ipath_ib_timer(struct ipath_ibdev *dev)
if (dev->pma_sample_status == IB_PMA_SAMPLE_STATUS_STARTED &&
--dev->pma_sample_start == 0) {
dev->pma_sample_status = IB_PMA_SAMPLE_STATUS_RUNNING;
ipath_layer_snapshot_counters(dev->dd, &dev->ipath_sword,
ipath_snapshot_counters(dev->dd, &dev->ipath_sword,
&dev->ipath_rword,
&dev->ipath_spkts,
&dev->ipath_rpkts,
......@@ -522,7 +526,7 @@ void ipath_ib_timer(struct ipath_ibdev *dev)
u64 ta, tb, tc, td, te;
dev->pma_sample_status = IB_PMA_SAMPLE_STATUS_DONE;
ipath_layer_snapshot_counters(dev->dd, &ta, &tb,
ipath_snapshot_counters(dev->dd, &ta, &tb,
&tc, &td, &te);
dev->ipath_sword = ta - dev->ipath_sword;
......@@ -553,6 +557,362 @@ void ipath_ib_timer(struct ipath_ibdev *dev)
}
}
static void update_sge(struct ipath_sge_state *ss, u32 length)
{
struct ipath_sge *sge = &ss->sge;
sge->vaddr += length;
sge->length -= length;
sge->sge_length -= length;
if (sge->sge_length == 0) {
if (--ss->num_sge)
*sge = *ss->sg_list++;
} else if (sge->length == 0 && sge->mr != NULL) {
if (++sge->n >= IPATH_SEGSZ) {
if (++sge->m >= sge->mr->mapsz)
return;
sge->n = 0;
}
sge->vaddr = sge->mr->map[sge->m]->segs[sge->n].vaddr;
sge->length = sge->mr->map[sge->m]->segs[sge->n].length;
}
}
#ifdef __LITTLE_ENDIAN
static inline u32 get_upper_bits(u32 data, u32 shift)
{
return data >> shift;
}
static inline u32 set_upper_bits(u32 data, u32 shift)
{
return data << shift;
}
static inline u32 clear_upper_bytes(u32 data, u32 n, u32 off)
{
data <<= ((sizeof(u32) - n) * BITS_PER_BYTE);
data >>= ((sizeof(u32) - n - off) * BITS_PER_BYTE);
return data;
}
#else
static inline u32 get_upper_bits(u32 data, u32 shift)
{
return data << shift;
}
static inline u32 set_upper_bits(u32 data, u32 shift)
{
return data >> shift;
}
static inline u32 clear_upper_bytes(u32 data, u32 n, u32 off)
{
data >>= ((sizeof(u32) - n) * BITS_PER_BYTE);
data <<= ((sizeof(u32) - n - off) * BITS_PER_BYTE);
return data;
}
#endif
static void copy_io(u32 __iomem *piobuf, struct ipath_sge_state *ss,
u32 length)
{
u32 extra = 0;
u32 data = 0;
u32 last;
while (1) {
u32 len = ss->sge.length;
u32 off;
BUG_ON(len == 0);
if (len > length)
len = length;
if (len > ss->sge.sge_length)
len = ss->sge.sge_length;
/* If the source address is not aligned, try to align it. */
off = (unsigned long)ss->sge.vaddr & (sizeof(u32) - 1);
if (off) {
u32 *addr = (u32 *)((unsigned long)ss->sge.vaddr &
~(sizeof(u32) - 1));
u32 v = get_upper_bits(*addr, off * BITS_PER_BYTE);
u32 y;
y = sizeof(u32) - off;
if (len > y)
len = y;
if (len + extra >= sizeof(u32)) {
data |= set_upper_bits(v, extra *
BITS_PER_BYTE);
len = sizeof(u32) - extra;
if (len == length) {
last = data;
break;
}
__raw_writel(data, piobuf);
piobuf++;
extra = 0;
data = 0;
} else {
/* Clear unused upper bytes */
data |= clear_upper_bytes(v, len, extra);
if (len == length) {
last = data;
break;
}
extra += len;
}
} else if (extra) {
/* Source address is aligned. */
u32 *addr = (u32 *) ss->sge.vaddr;
int shift = extra * BITS_PER_BYTE;
int ushift = 32 - shift;
u32 l = len;
while (l >= sizeof(u32)) {
u32 v = *addr;
data |= set_upper_bits(v, shift);
__raw_writel(data, piobuf);
data = get_upper_bits(v, ushift);
piobuf++;
addr++;
l -= sizeof(u32);
}
/*
* We still have 'extra' number of bytes leftover.
*/
if (l) {
u32 v = *addr;
if (l + extra >= sizeof(u32)) {
data |= set_upper_bits(v, shift);
len -= l + extra - sizeof(u32);
if (len == length) {
last = data;
break;
}
__raw_writel(data, piobuf);
piobuf++;
extra = 0;
data = 0;
} else {
/* Clear unused upper bytes */
data |= clear_upper_bytes(v, l,
extra);
if (len == length) {
last = data;
break;
}
extra += l;
}
} else if (len == length) {
last = data;
break;
}
} else if (len == length) {
u32 w;
/*
* Need to round up for the last dword in the
* packet.
*/
w = (len + 3) >> 2;
__iowrite32_copy(piobuf, ss->sge.vaddr, w - 1);
piobuf += w - 1;
last = ((u32 *) ss->sge.vaddr)[w - 1];
break;
} else {
u32 w = len >> 2;
__iowrite32_copy(piobuf, ss->sge.vaddr, w);
piobuf += w;
extra = len & (sizeof(u32) - 1);
if (extra) {
u32 v = ((u32 *) ss->sge.vaddr)[w];
/* Clear unused upper bytes */
data = clear_upper_bytes(v, extra, 0);
}
}
update_sge(ss, len);
length -= len;
}
/* Update address before sending packet. */
update_sge(ss, length);
/* must flush early everything before trigger word */
ipath_flush_wc();
__raw_writel(last, piobuf);
/* be sure trigger word is written */
ipath_flush_wc();
}
/**
* ipath_verbs_send - send a packet
* @dd: the infinipath device
* @hdrwords: the number of words in the header
* @hdr: the packet header
* @len: the length of the packet in bytes
* @ss: the SGE to send
*/
int ipath_verbs_send(struct ipath_devdata *dd, u32 hdrwords,
u32 *hdr, u32 len, struct ipath_sge_state *ss)
{
u32 __iomem *piobuf;
u32 plen;
int ret;
/* +1 is for the qword padding of pbc */
plen = hdrwords + ((len + 3) >> 2) + 1;
if (unlikely((plen << 2) > dd->ipath_ibmaxlen)) {
ipath_dbg("packet len 0x%x too long, failing\n", plen);
ret = -EINVAL;
goto bail;
}
/* Get a PIO buffer to use. */
piobuf = ipath_getpiobuf(dd, NULL);
if (unlikely(piobuf == NULL)) {
ret = -EBUSY;
goto bail;
}
/*
* Write len to control qword, no flags.
* We have to flush after the PBC for correctness on some cpus
* or WC buffer can be written out of order.
*/
writeq(plen, piobuf);
ipath_flush_wc();
piobuf += 2;
if (len == 0) {
/*
* If there is just the header portion, must flush before
* writing last word of header for correctness, and after
* the last header word (trigger word).
*/
__iowrite32_copy(piobuf, hdr, hdrwords - 1);
ipath_flush_wc();
__raw_writel(hdr[hdrwords - 1], piobuf + hdrwords - 1);
ipath_flush_wc();
ret = 0;
goto bail;
}
__iowrite32_copy(piobuf, hdr, hdrwords);
piobuf += hdrwords;
/* The common case is aligned and contained in one segment. */
if (likely(ss->num_sge == 1 && len <= ss->sge.length &&
!((unsigned long)ss->sge.vaddr & (sizeof(u32) - 1)))) {
u32 w;
u32 *addr = (u32 *) ss->sge.vaddr;
/* Update address before sending packet. */
update_sge(ss, len);
/* Need to round up for the last dword in the packet. */
w = (len + 3) >> 2;
__iowrite32_copy(piobuf, addr, w - 1);
/* must flush early everything before trigger word */
ipath_flush_wc();
__raw_writel(addr[w - 1], piobuf + w - 1);
/* be sure trigger word is written */
ipath_flush_wc();
ret = 0;
goto bail;
}
copy_io(piobuf, ss, len);
ret = 0;
bail:
return ret;
}
int ipath_snapshot_counters(struct ipath_devdata *dd, u64 *swords,
u64 *rwords, u64 *spkts, u64 *rpkts,
u64 *xmit_wait)
{
int ret;
if (!(dd->ipath_flags & IPATH_INITTED)) {
/* no hardware, freeze, etc. */
ipath_dbg("unit %u not usable\n", dd->ipath_unit);
ret = -EINVAL;
goto bail;
}
*swords = ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordsendcnt);
*rwords = ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordrcvcnt);
*spkts = ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktsendcnt);
*rpkts = ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktrcvcnt);
*xmit_wait = ipath_snap_cntr(dd, dd->ipath_cregs->cr_sendstallcnt);
ret = 0;
bail:
return ret;
}
/**
* ipath_get_counters - get various chip counters
* @dd: the infinipath device
* @cntrs: counters are placed here
*
* Return the counters needed by recv_pma_get_portcounters().
*/
int ipath_get_counters(struct ipath_devdata *dd,
struct ipath_verbs_counters *cntrs)
{
int ret;
if (!(dd->ipath_flags & IPATH_INITTED)) {
/* no hardware, freeze, etc. */
ipath_dbg("unit %u not usable\n", dd->ipath_unit);
ret = -EINVAL;
goto bail;
}
cntrs->symbol_error_counter =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_ibsymbolerrcnt);
cntrs->link_error_recovery_counter =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_iblinkerrrecovcnt);
/*
* The link downed counter counts when the other side downs the
* connection. We add in the number of times we downed the link
* due to local link integrity errors to compensate.
*/
cntrs->link_downed_counter =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_iblinkdowncnt);
cntrs->port_rcv_errors =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_rxdroppktcnt) +
ipath_snap_cntr(dd, dd->ipath_cregs->cr_rcvovflcnt) +
ipath_snap_cntr(dd, dd->ipath_cregs->cr_portovflcnt) +
ipath_snap_cntr(dd, dd->ipath_cregs->cr_err_rlencnt) +
ipath_snap_cntr(dd, dd->ipath_cregs->cr_invalidrlencnt) +
ipath_snap_cntr(dd, dd->ipath_cregs->cr_erricrccnt) +
ipath_snap_cntr(dd, dd->ipath_cregs->cr_errvcrccnt) +
ipath_snap_cntr(dd, dd->ipath_cregs->cr_errlpcrccnt) +
ipath_snap_cntr(dd, dd->ipath_cregs->cr_badformatcnt);
cntrs->port_rcv_remphys_errors =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_rcvebpcnt);
cntrs->port_xmit_discards =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_unsupvlcnt);
cntrs->port_xmit_data =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordsendcnt);
cntrs->port_rcv_data =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordrcvcnt);
cntrs->port_xmit_packets =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktsendcnt);
cntrs->port_rcv_packets =
ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktrcvcnt);
cntrs->local_link_integrity_errors = dd->ipath_lli_errors;
cntrs->excessive_buffer_overrun_errors = 0; /* XXX */
ret = 0;
bail:
return ret;
}
/**
* ipath_ib_piobufavail - callback when a PIO buffer is available
* @arg: the device pointer
......@@ -595,9 +955,9 @@ static int ipath_query_device(struct ib_device *ibdev,
IB_DEVICE_BAD_QKEY_CNTR | IB_DEVICE_SHUTDOWN_PORT |
IB_DEVICE_SYS_IMAGE_GUID;
props->page_size_cap = PAGE_SIZE;
props->vendor_id = ipath_layer_get_vendorid(dev->dd);
props->vendor_part_id = ipath_layer_get_deviceid(dev->dd);
props->hw_ver = ipath_layer_get_pcirev(dev->dd);
props->vendor_id = dev->dd->ipath_vendorid;
props->vendor_part_id = dev->dd->ipath_deviceid;
props->hw_ver = dev->dd->ipath_pcirev;
props->sys_image_guid = dev->sys_image_guid;
......@@ -618,7 +978,7 @@ static int ipath_query_device(struct ib_device *ibdev,
props->max_srq_sge = ib_ipath_max_srq_sges;
/* props->local_ca_ack_delay */
props->atomic_cap = IB_ATOMIC_HCA;
props->max_pkeys = ipath_layer_get_npkeys(dev->dd);
props->max_pkeys = ipath_get_npkeys(dev->dd);
props->max_mcast_grp = ib_ipath_max_mcast_grps;
props->max_mcast_qp_attach = ib_ipath_max_mcast_qp_attached;
props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
......@@ -643,12 +1003,17 @@ const u8 ipath_cvt_physportstate[16] = {
[INFINIPATH_IBCS_LT_STATE_RECOVERIDLE] = 6,
};
u32 ipath_get_cr_errpkey(struct ipath_devdata *dd)
{
return ipath_read_creg32(dd, dd->ipath_cregs->cr_errpkey);
}
static int ipath_query_port(struct ib_device *ibdev,
u8 port, struct ib_port_attr *props)
{
struct ipath_ibdev *dev = to_idev(ibdev);
enum ib_mtu mtu;
u16 lid = ipath_layer_get_lid(dev->dd);
u16 lid = dev->dd->ipath_lid;
u64 ibcstat;
memset(props, 0, sizeof(*props));
......@@ -656,16 +1021,16 @@ static int ipath_query_port(struct ib_device *ibdev,
props->lmc = dev->mkeyprot_resv_lmc & 7;
props->sm_lid = dev->sm_lid;
props->sm_sl = dev->sm_sl;
ibcstat = ipath_layer_get_lastibcstat(dev->dd);
ibcstat = dev->dd->ipath_lastibcstat;
props->state = ((ibcstat >> 4) & 0x3) + 1;
/* See phys_state_show() */
props->phys_state = ipath_cvt_physportstate[
ipath_layer_get_lastibcstat(dev->dd) & 0xf];
dev->dd->ipath_lastibcstat & 0xf];
props->port_cap_flags = dev->port_cap_flags;
props->gid_tbl_len = 1;
props->max_msg_sz = 0x80000000;
props->pkey_tbl_len = ipath_layer_get_npkeys(dev->dd);
props->bad_pkey_cntr = ipath_layer_get_cr_errpkey(dev->dd) -
props->pkey_tbl_len = ipath_get_npkeys(dev->dd);
props->bad_pkey_cntr = ipath_get_cr_errpkey(dev->dd) -
dev->z_pkey_violations;
props->qkey_viol_cntr = dev->qkey_violations;
props->active_width = IB_WIDTH_4X;
......@@ -675,7 +1040,7 @@ static int ipath_query_port(struct ib_device *ibdev,
props->init_type_reply = 0;
props->max_mtu = IB_MTU_4096;
switch (ipath_layer_get_ibmtu(dev->dd)) {
switch (dev->dd->ipath_ibmtu) {
case 4096:
mtu = IB_MTU_4096;
break;
......@@ -734,7 +1099,7 @@ static int ipath_modify_port(struct ib_device *ibdev,
dev->port_cap_flags |= props->set_port_cap_mask;
dev->port_cap_flags &= ~props->clr_port_cap_mask;
if (port_modify_mask & IB_PORT_SHUTDOWN)
ipath_layer_set_linkstate(dev->dd, IPATH_IB_LINKDOWN);
ipath_set_linkstate(dev->dd, IPATH_IB_LINKDOWN);
if (port_modify_mask & IB_PORT_RESET_QKEY_CNTR)
dev->qkey_violations = 0;
return 0;
......@@ -751,7 +1116,7 @@ static int ipath_query_gid(struct ib_device *ibdev, u8 port,
goto bail;
}
gid->global.subnet_prefix = dev->gid_prefix;
gid->global.interface_id = ipath_layer_get_guid(dev->dd);
gid->global.interface_id = dev->dd->ipath_guid;
ret = 0;
......@@ -902,25 +1267,50 @@ static int ipath_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr)
return 0;
}
/**
* ipath_get_npkeys - return the size of the PKEY table for port 0
* @dd: the infinipath device
*/
unsigned ipath_get_npkeys(struct ipath_devdata *dd)
{
return ARRAY_SIZE(dd->ipath_pd[0]->port_pkeys);
}
/**
* ipath_get_pkey - return the indexed PKEY from the port 0 PKEY table
* @dd: the infinipath device
* @index: the PKEY index
*/
unsigned ipath_get_pkey(struct ipath_devdata *dd, unsigned index)
{
unsigned ret;
if (index >= ARRAY_SIZE(dd->ipath_pd[0]->port_pkeys))
ret = 0;
else
ret = dd->ipath_pd[0]->port_pkeys[index];
return ret;
}
static int ipath_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
u16 *pkey)
{
struct ipath_ibdev *dev = to_idev(ibdev);
int ret;
if (index >= ipath_layer_get_npkeys(dev->dd)) {
if (index >= ipath_get_npkeys(dev->dd)) {
ret = -EINVAL;
goto bail;
}
*pkey = ipath_layer_get_pkey(dev->dd, index);
*pkey = ipath_get_pkey(dev->dd, index);
ret = 0;
bail:
return ret;
}
/**
* ipath_alloc_ucontext - allocate a ucontest
* @ibdev: the infiniband device
......@@ -953,6 +1343,63 @@ static int ipath_dealloc_ucontext(struct ib_ucontext *context)
static int ipath_verbs_register_sysfs(struct ib_device *dev);
static void __verbs_timer(unsigned long arg)
{
struct ipath_devdata *dd = (struct ipath_devdata *) arg;
/*
* If port 0 receive packet interrupts are not available, or
* can be missed, poll the receive queue
*/
if (dd->ipath_flags & IPATH_POLL_RX_INTR)
ipath_kreceive(dd);
/* Handle verbs layer timeouts. */
ipath_ib_timer(dd->verbs_dev);
mod_timer(&dd->verbs_timer, jiffies + 1);
}
static int enable_timer(struct ipath_devdata *dd)
{
/*
* Early chips had a design flaw where the chip and kernel idea
* of the tail register don't always agree, and therefore we won't
* get an interrupt on the next packet received.
* If the board supports per packet receive interrupts, use it.
* Otherwise, the timer function periodically checks for packets
* to cover this case.
* Either way, the timer is needed for verbs layer related
* processing.
*/
if (dd->ipath_flags & IPATH_GPIO_INTR) {
ipath_write_kreg(dd, dd->ipath_kregs->kr_debugportselect,
0x2074076542310ULL);
/* Enable GPIO bit 2 interrupt */
ipath_write_kreg(dd, dd->ipath_kregs->kr_gpio_mask,
(u64) (1 << 2));
}
init_timer(&dd->verbs_timer);
dd->verbs_timer.function = __verbs_timer;
dd->verbs_timer.data = (unsigned long)dd;
dd->verbs_timer.expires = jiffies + 1;
add_timer(&dd->verbs_timer);
return 0;
}
static int disable_timer(struct ipath_devdata *dd)
{
/* Disable GPIO bit 2 interrupt */
if (dd->ipath_flags & IPATH_GPIO_INTR)
ipath_write_kreg(dd, dd->ipath_kregs->kr_gpio_mask, 0);
del_timer_sync(&dd->verbs_timer);
return 0;
}
/**
* ipath_register_ib_device - register our device with the infiniband core
* @dd: the device data structure
......@@ -960,7 +1407,7 @@ static int ipath_verbs_register_sysfs(struct ib_device *dev);
*/
int ipath_register_ib_device(struct ipath_devdata *dd)
{
struct ipath_layer_counters cntrs;
struct ipath_verbs_counters cntrs;
struct ipath_ibdev *idev;
struct ib_device *dev;
int ret;
......@@ -1020,7 +1467,7 @@ int ipath_register_ib_device(struct ipath_devdata *dd)
idev->link_width_enabled = 3; /* 1x or 4x */
/* Snapshot current HW counters to "clear" them. */
ipath_layer_get_counters(dd, &cntrs);
ipath_get_counters(dd, &cntrs);
idev->z_symbol_error_counter = cntrs.symbol_error_counter;
idev->z_link_error_recovery_counter =
cntrs.link_error_recovery_counter;
......@@ -1044,14 +1491,14 @@ int ipath_register_ib_device(struct ipath_devdata *dd)
* device types in the system, we can't be sure this is unique.
*/
if (!sys_image_guid)
sys_image_guid = ipath_layer_get_guid(dd);
sys_image_guid = dd->ipath_guid;
idev->sys_image_guid = sys_image_guid;
idev->ib_unit = dd->ipath_unit;
idev->dd = dd;
strlcpy(dev->name, "ipath%d", IB_DEVICE_NAME_MAX);
dev->owner = THIS_MODULE;
dev->node_guid = ipath_layer_get_guid(dd);
dev->node_guid = dd->ipath_guid;
dev->uverbs_abi_ver = IPATH_UVERBS_ABI_VERSION;
dev->uverbs_cmd_mask =
(1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
......@@ -1085,7 +1532,7 @@ int ipath_register_ib_device(struct ipath_devdata *dd)
(1ull << IB_USER_VERBS_CMD_POST_SRQ_RECV);
dev->node_type = IB_NODE_CA;
dev->phys_port_cnt = 1;
dev->dma_device = ipath_layer_get_device(dd);
dev->dma_device = &dd->pcidev->dev;
dev->class_dev.dev = dev->dma_device;
dev->query_device = ipath_query_device;
dev->modify_device = ipath_modify_device;
......@@ -1139,7 +1586,7 @@ int ipath_register_ib_device(struct ipath_devdata *dd)
if (ipath_verbs_register_sysfs(dev))
goto err_class;
ipath_layer_enable_timer(dd);
enable_timer(dd);
goto bail;
......@@ -1164,7 +1611,7 @@ void ipath_unregister_ib_device(struct ipath_ibdev *dev)
{
struct ib_device *ibdev = &dev->ibdev;
ipath_layer_disable_timer(dev->dd);
disable_timer(dev->dd);
ib_unregister_device(ibdev);
......@@ -1197,7 +1644,7 @@ static ssize_t show_rev(struct class_device *cdev, char *buf)
struct ipath_ibdev *dev =
container_of(cdev, struct ipath_ibdev, ibdev.class_dev);
return sprintf(buf, "%x\n", ipath_layer_get_pcirev(dev->dd));
return sprintf(buf, "%x\n", dev->dd->ipath_pcirev);
}
static ssize_t show_hca(struct class_device *cdev, char *buf)
......@@ -1206,7 +1653,7 @@ static ssize_t show_hca(struct class_device *cdev, char *buf)
container_of(cdev, struct ipath_ibdev, ibdev.class_dev);
int ret;
ret = ipath_layer_get_boardname(dev->dd, buf, 128);
ret = dev->dd->ipath_f_get_boardname(dev->dd, buf, 128);
if (ret < 0)
goto bail;
strcat(buf, "\n");
......
drivers/infiniband/hw/ipath/ipath_verbs.h
View file @ 34b2aafe
......@@ -153,19 +153,6 @@ struct ipath_mcast {
int n_attached;
};
/* Memory region */
struct ipath_mr {
struct ib_mr ibmr;
struct ipath_mregion mr; /* must be last */
};
/* Fast memory region */
struct ipath_fmr {
struct ib_fmr ibfmr;
u8 page_shift;
struct ipath_mregion mr; /* must be last */
};
/* Protection domain */
struct ipath_pd {
struct ib_pd ibpd;
......@@ -216,6 +203,54 @@ struct ipath_cq {
struct ipath_mmap_info *ip;
};
/*
* A segment is a linear region of low physical memory.
* XXX Maybe we should use phys addr here and kmap()/kunmap().
* Used by the verbs layer.
*/
struct ipath_seg {
void *vaddr;
size_t length;
};
/* The number of ipath_segs that fit in a page. */
#define IPATH_SEGSZ (PAGE_SIZE / sizeof (struct ipath_seg))
struct ipath_segarray {
struct ipath_seg segs[IPATH_SEGSZ];
};
struct ipath_mregion {
u64 user_base; /* User's address for this region */
u64 iova; /* IB start address of this region */
size_t length;
u32 lkey;
u32 offset; /* offset (bytes) to start of region */
int access_flags;
u32 max_segs; /* number of ipath_segs in all the arrays */
u32 mapsz; /* size of the map array */
struct ipath_segarray *map[0]; /* the segments */
};
/*
* These keep track of the copy progress within a memory region.
* Used by the verbs layer.
*/
struct ipath_sge {
struct ipath_mregion *mr;
void *vaddr; /* current pointer into the segment */
u32 sge_length; /* length of the SGE */
u32 length; /* remaining length of the segment */
u16 m; /* current index: mr->map[m] */
u16 n; /* current index: mr->map[m]->segs[n] */
};
/* Memory region */
struct ipath_mr {
struct ib_mr ibmr;
struct ipath_mregion mr; /* must be last */
};
/*
* Send work request queue entry.
* The size of the sg_list is determined when the QP is created and stored
......@@ -270,6 +305,12 @@ struct ipath_srq {
u32 limit;
};
struct ipath_sge_state {
struct ipath_sge *sg_list; /* next SGE to be used if any */
struct ipath_sge sge; /* progress state for the current SGE */
u8 num_sge;
};
/*
* Variables prefixed with s_ are for the requester (sender).
* Variables prefixed with r_ are for the responder (receiver).
......@@ -500,8 +541,19 @@ struct ipath_ibdev {
struct ipath_opcode_stats opstats[128];
};
struct ipath_ucontext {
struct ib_ucontext ibucontext;
struct ipath_verbs_counters {
u64 symbol_error_counter;
u64 link_error_recovery_counter;
u64 link_downed_counter;
u64 port_rcv_errors;
u64 port_rcv_remphys_errors;
u64 port_xmit_discards;
u64 port_xmit_data;
u64 port_rcv_data;
u64 port_xmit_packets;
u64 port_rcv_packets;
u32 local_link_integrity_errors;
u32 excessive_buffer_overrun_errors;
};
static inline struct ipath_mr *to_imr(struct ib_mr *ibmr)
......@@ -509,11 +561,6 @@ static inline struct ipath_mr *to_imr(struct ib_mr *ibmr)
return container_of(ibmr, struct ipath_mr, ibmr);
}
static inline struct ipath_fmr *to_ifmr(struct ib_fmr *ibfmr)
{
return container_of(ibfmr, struct ipath_fmr, ibfmr);
}
static inline struct ipath_pd *to_ipd(struct ib_pd *ibpd)
{
return container_of(ibpd, struct ipath_pd, ibpd);
......@@ -551,12 +598,6 @@ int ipath_process_mad(struct ib_device *ibdev,
struct ib_grh *in_grh,
struct ib_mad *in_mad, struct ib_mad *out_mad);
static inline struct ipath_ucontext *to_iucontext(struct ib_ucontext
*ibucontext)
{
return container_of(ibucontext, struct ipath_ucontext, ibucontext);
}
/*
* Compare the lower 24 bits of the two values.
* Returns an integer <, ==, or > than zero.
......@@ -568,6 +609,13 @@ static inline int ipath_cmp24(u32 a, u32 b)
struct ipath_mcast *ipath_mcast_find(union ib_gid *mgid);
int ipath_snapshot_counters(struct ipath_devdata *dd, u64 *swords,
u64 *rwords, u64 *spkts, u64 *rpkts,
u64 *xmit_wait);
int ipath_get_counters(struct ipath_devdata *dd,
struct ipath_verbs_counters *cntrs);
int ipath_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid);
int ipath_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid);
......@@ -598,6 +646,9 @@ void ipath_sqerror_qp(struct ipath_qp *qp, struct ib_wc *wc);
void ipath_get_credit(struct ipath_qp *qp, u32 aeth);
int ipath_verbs_send(struct ipath_devdata *dd, u32 hdrwords,
u32 *hdr, u32 len, struct ipath_sge_state *ss);
void ipath_cq_enter(struct ipath_cq *cq, struct ib_wc *entry, int sig);
int ipath_rkey_ok(struct ipath_ibdev *dev, struct ipath_sge_state *ss,
......@@ -721,6 +772,12 @@ int ipath_ib_piobufavail(struct ipath_ibdev *);
void ipath_ib_timer(struct ipath_ibdev *);
unsigned ipath_get_npkeys(struct ipath_devdata *);
u32 ipath_get_cr_errpkey(struct ipath_devdata *);
unsigned ipath_get_pkey(struct ipath_devdata *, unsigned);
extern const enum ib_wc_opcode ib_ipath_wc_opcode[];
extern const u8 ipath_cvt_physportstate[];
......
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