aboutsummaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/infiniband/hw/ipath/ipath_common.h16
-rw-r--r--drivers/infiniband/hw/ipath/ipath_file_ops.c171
2 files changed, 104 insertions, 83 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_common.h b/drivers/infiniband/hw/ipath/ipath_common.h
index a4136780352..048b928bb4b 100644
--- a/drivers/infiniband/hw/ipath/ipath_common.h
+++ b/drivers/infiniband/hw/ipath/ipath_common.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006 QLogic, Inc. All rights reserved.
+ * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved.
* Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
@@ -318,11 +318,17 @@ struct ipath_base_info {
/* address of readonly memory copy of the rcvhdrq tail register. */
__u64 spi_rcvhdr_tailaddr;
- /* shared memory pages for subports if IPATH_RUNTIME_MASTER is set */
+ /* shared memory pages for subports if port is shared */
__u64 spi_subport_uregbase;
__u64 spi_subport_rcvegrbuf;
__u64 spi_subport_rcvhdr_base;
+ /* shared memory page for hardware port if it is shared */
+ __u64 spi_port_uregbase;
+ __u64 spi_port_rcvegrbuf;
+ __u64 spi_port_rcvhdr_base;
+ __u64 spi_port_rcvhdr_tailaddr;
+
} __attribute__ ((aligned(8)));
@@ -346,7 +352,7 @@ struct ipath_base_info {
* may not be implemented; the user code must deal with this if it
* cares, or it must abort after initialization reports the difference.
*/
-#define IPATH_USER_SWMINOR 3
+#define IPATH_USER_SWMINOR 4
#define IPATH_USER_SWVERSION ((IPATH_USER_SWMAJOR<<16) | IPATH_USER_SWMINOR)
@@ -420,7 +426,7 @@ struct ipath_user_info {
#define IPATH_CMD_TID_UPDATE 19 /* update expected TID entries */
#define IPATH_CMD_TID_FREE 20 /* free expected TID entries */
#define IPATH_CMD_SET_PART_KEY 21 /* add partition key */
-#define IPATH_CMD_SLAVE_INFO 22 /* return info on slave processes */
+#define __IPATH_CMD_SLAVE_INFO 22 /* return info on slave processes (for old user code) */
#define IPATH_CMD_ASSIGN_PORT 23 /* allocate HCA and port */
#define IPATH_CMD_USER_INIT 24 /* set up userspace */
@@ -432,7 +438,7 @@ struct ipath_port_info {
__u16 port; /* port on unit assigned to caller */
__u16 subport; /* subport on unit assigned to caller */
__u16 num_ports; /* number of ports available on unit */
- __u16 num_subports; /* number of subport slaves opened on port */
+ __u16 num_subports; /* number of subports opened on port */
};
struct ipath_tid_info {
diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c
index a1cfedf8fb1..bb53bde80ee 100644
--- a/drivers/infiniband/hw/ipath/ipath_file_ops.c
+++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006 QLogic, Inc. All rights reserved.
+ * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved.
* Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
@@ -99,7 +99,7 @@ static int ipath_get_base_info(struct file *fp,
sz = sizeof(*kinfo);
/* If port sharing is not requested, allow the old size structure */
if (!shared)
- sz -= 3 * sizeof(u64);
+ sz -= 7 * sizeof(u64);
if (ubase_size < sz) {
ipath_cdbg(PROC,
"Base size %zu, need %zu (version mismatch?)\n",
@@ -177,22 +177,41 @@ static int ipath_get_base_info(struct file *fp,
kinfo->spi_piobufbase = (u64) pd->port_piobufs +
dd->ipath_palign *
(dd->ipath_pbufsport - kinfo->spi_piocnt);
- kinfo->__spi_uregbase = (u64) dd->ipath_uregbase +
- dd->ipath_palign * pd->port_port;
} else {
unsigned slave = subport_fp(fp) - 1;
kinfo->spi_piocnt = dd->ipath_pbufsport / subport_cnt;
kinfo->spi_piobufbase = (u64) pd->port_piobufs +
dd->ipath_palign * kinfo->spi_piocnt * slave;
+ }
+ if (shared) {
+ kinfo->spi_port_uregbase = (u64) dd->ipath_uregbase +
+ dd->ipath_palign * pd->port_port;
+ kinfo->spi_port_rcvegrbuf = kinfo->spi_rcv_egrbufs;
+ kinfo->spi_port_rcvhdr_base = kinfo->spi_rcvhdr_base;
+ kinfo->spi_port_rcvhdr_tailaddr = kinfo->spi_rcvhdr_tailaddr;
+
kinfo->__spi_uregbase = cvt_kvaddr(pd->subport_uregbase +
- PAGE_SIZE * slave);
+ PAGE_SIZE * subport_fp(fp));
kinfo->spi_rcvhdr_base = cvt_kvaddr(pd->subport_rcvhdr_base +
- pd->port_rcvhdrq_size * slave);
+ pd->port_rcvhdrq_size * subport_fp(fp));
kinfo->spi_rcvhdr_tailaddr = 0;
kinfo->spi_rcv_egrbufs = cvt_kvaddr(pd->subport_rcvegrbuf +
- dd->ipath_rcvegrcnt * dd->ipath_rcvegrbufsize * slave);
+ pd->port_rcvegrbuf_chunks * pd->port_rcvegrbuf_size *
+ subport_fp(fp));
+
+ kinfo->spi_subport_uregbase =
+ cvt_kvaddr(pd->subport_uregbase);
+ kinfo->spi_subport_rcvegrbuf =
+ cvt_kvaddr(pd->subport_rcvegrbuf);
+ kinfo->spi_subport_rcvhdr_base =
+ cvt_kvaddr(pd->subport_rcvhdr_base);
+ ipath_cdbg(PROC, "port %u flags %x %llx %llx %llx\n",
+ kinfo->spi_port, kinfo->spi_runtime_flags,
+ (unsigned long long) kinfo->spi_subport_uregbase,
+ (unsigned long long) kinfo->spi_subport_rcvegrbuf,
+ (unsigned long long) kinfo->spi_subport_rcvhdr_base);
}
kinfo->spi_pioindex = (kinfo->spi_piobufbase - dd->ipath_piobufbase) /
@@ -209,20 +228,10 @@ static int ipath_get_base_info(struct file *fp,
if (master) {
kinfo->spi_runtime_flags |= IPATH_RUNTIME_MASTER;
- kinfo->spi_subport_uregbase =
- cvt_kvaddr(pd->subport_uregbase);
- kinfo->spi_subport_rcvegrbuf =
- cvt_kvaddr(pd->subport_rcvegrbuf);
- kinfo->spi_subport_rcvhdr_base =
- cvt_kvaddr(pd->subport_rcvhdr_base);
- ipath_cdbg(PROC, "port %u flags %x %llx %llx %llx\n",
- kinfo->spi_port, kinfo->spi_runtime_flags,
- (unsigned long long) kinfo->spi_subport_uregbase,
- (unsigned long long) kinfo->spi_subport_rcvegrbuf,
- (unsigned long long) kinfo->spi_subport_rcvhdr_base);
}
- if (copy_to_user(ubase, kinfo, sizeof(*kinfo)))
+ sz = (ubase_size < sizeof(*kinfo)) ? ubase_size : sizeof(*kinfo);
+ if (copy_to_user(ubase, kinfo, sz))
ret = -EFAULT;
bail:
@@ -1152,50 +1161,47 @@ static int mmap_kvaddr(struct vm_area_struct *vma, u64 pgaddr,
size = pd->port_rcvegrbuf_chunks * pd->port_rcvegrbuf_size;
/*
- * Master has all the slave uregbase, rcvhdrq, and
- * rcvegrbufs mmapped.
+ * Each process has all the subport uregbase, rcvhdrq, and
+ * rcvegrbufs mmapped - as an array for all the processes,
+ * and also separately for this process.
*/
- if (subport == 0) {
- unsigned num_slaves = pd->port_subport_cnt - 1;
-
- if (pgaddr == cvt_kvaddr(pd->subport_uregbase)) {
- addr = pd->subport_uregbase;
- size = PAGE_SIZE * num_slaves;
- } else if (pgaddr == cvt_kvaddr(pd->subport_rcvhdr_base)) {
- addr = pd->subport_rcvhdr_base;
- size = pd->port_rcvhdrq_size * num_slaves;
- } else if (pgaddr == cvt_kvaddr(pd->subport_rcvegrbuf)) {
- addr = pd->subport_rcvegrbuf;
- size *= num_slaves;
- } else
- goto bail;
- } else if (pgaddr == cvt_kvaddr(pd->subport_uregbase +
- PAGE_SIZE * (subport - 1))) {
- addr = pd->subport_uregbase + PAGE_SIZE * (subport - 1);
- size = PAGE_SIZE;
- } else if (pgaddr == cvt_kvaddr(pd->subport_rcvhdr_base +
- pd->port_rcvhdrq_size * (subport - 1))) {
- addr = pd->subport_rcvhdr_base +
- pd->port_rcvhdrq_size * (subport - 1);
- size = pd->port_rcvhdrq_size;
- } else if (pgaddr == cvt_kvaddr(pd->subport_rcvegrbuf +
- size * (subport - 1))) {
- addr = pd->subport_rcvegrbuf + size * (subport - 1);
- /* rcvegrbufs are read-only on the slave */
- if (vma->vm_flags & VM_WRITE) {
- dev_info(&dd->pcidev->dev,
- "Can't map eager buffers as "
- "writable (flags=%lx)\n", vma->vm_flags);
- ret = -EPERM;
- goto bail;
- }
- /*
- * Don't allow permission to later change to writeable
- * with mprotect.
- */
- vma->vm_flags &= ~VM_MAYWRITE;
- } else
+ if (pgaddr == cvt_kvaddr(pd->subport_uregbase)) {
+ addr = pd->subport_uregbase;
+ size = PAGE_SIZE * pd->port_subport_cnt;
+ } else if (pgaddr == cvt_kvaddr(pd->subport_rcvhdr_base)) {
+ addr = pd->subport_rcvhdr_base;
+ size = pd->port_rcvhdrq_size * pd->port_subport_cnt;
+ } else if (pgaddr == cvt_kvaddr(pd->subport_rcvegrbuf)) {
+ addr = pd->subport_rcvegrbuf;
+ size *= pd->port_subport_cnt;
+ } else if (pgaddr == cvt_kvaddr(pd->subport_uregbase +
+ PAGE_SIZE * subport)) {
+ addr = pd->subport_uregbase + PAGE_SIZE * subport;
+ size = PAGE_SIZE;
+ } else if (pgaddr == cvt_kvaddr(pd->subport_rcvhdr_base +
+ pd->port_rcvhdrq_size * subport)) {
+ addr = pd->subport_rcvhdr_base +
+ pd->port_rcvhdrq_size * subport;
+ size = pd->port_rcvhdrq_size;
+ } else if (pgaddr == cvt_kvaddr(pd->subport_rcvegrbuf +
+ size * subport)) {
+ addr = pd->subport_rcvegrbuf + size * subport;
+ /* rcvegrbufs are read-only on the slave */
+ if (vma->vm_flags & VM_WRITE) {
+ dev_info(&dd->pcidev->dev,
+ "Can't map eager buffers as "
+ "writable (flags=%lx)\n", vma->vm_flags);
+ ret = -EPERM;
+ goto bail;
+ }
+ /*
+ * Don't allow permission to later change to writeable
+ * with mprotect.
+ */
+ vma->vm_flags &= ~VM_MAYWRITE;
+ } else {
goto bail;
+ }
len = vma->vm_end - vma->vm_start;
if (len > size) {
ipath_cdbg(MM, "FAIL: reqlen %lx > %zx\n", len, size);
@@ -1273,14 +1279,13 @@ static int ipath_mmap(struct file *fp, struct vm_area_struct *vma)
goto bail;
}
+ ureg = dd->ipath_uregbase + dd->ipath_palign * pd->port_port;
if (!pd->port_subport_cnt) {
/* port is not shared */
- ureg = dd->ipath_uregbase + dd->ipath_palign * pd->port_port;
piocnt = dd->ipath_pbufsport;
piobufs = pd->port_piobufs;
} else if (!subport_fp(fp)) {
/* caller is the master */
- ureg = dd->ipath_uregbase + dd->ipath_palign * pd->port_port;
piocnt = (dd->ipath_pbufsport / pd->port_subport_cnt) +
(dd->ipath_pbufsport % pd->port_subport_cnt);
piobufs = pd->port_piobufs +
@@ -1289,7 +1294,6 @@ static int ipath_mmap(struct file *fp, struct vm_area_struct *vma)
unsigned slave = subport_fp(fp) - 1;
/* caller is a slave */
- ureg = 0;
piocnt = dd->ipath_pbufsport / pd->port_subport_cnt;
piobufs = pd->port_piobufs + dd->ipath_palign * piocnt * slave;
}
@@ -1303,9 +1307,6 @@ static int ipath_mmap(struct file *fp, struct vm_area_struct *vma)
ret = ipath_mmap_mem(vma, pd, PAGE_SIZE, 0,
(void *) dd->ipath_pioavailregs_dma,
"pioavail registers");
- else if (subport_fp(fp))
- /* Subports don't mmap the physical receive buffers */
- ret = -EINVAL;
else if (pgaddr == pd->port_rcvegr_phys)
ret = mmap_rcvegrbufs(vma, pd);
else if (pgaddr == (u64) pd->port_rcvhdrq_phys)
@@ -1403,32 +1404,41 @@ static int init_subports(struct ipath_devdata *dd,
const struct ipath_user_info *uinfo)
{
int ret = 0;
- unsigned num_slaves;
+ unsigned num_subports;
size_t size;
- /* Old user binaries don't know about subports */
- if ((uinfo->spu_userversion & 0xffff) != IPATH_USER_SWMINOR)
- goto bail;
/*
* If the user is requesting zero or one port,
* skip the subport allocation.
*/
if (uinfo->spu_subport_cnt <= 1)
goto bail;
+
+ /* Old user binaries don't know about new subport implementation */
+ if ((uinfo->spu_userversion & 0xffff) != IPATH_USER_SWMINOR) {
+ dev_info(&dd->pcidev->dev,
+ "Mismatched user minor version (%d) and driver "
+ "minor version (%d) while port sharing. Ensure "
+ "that driver and library are from the same "
+ "release.\n",
+ (int) (uinfo->spu_userversion & 0xffff),
+ IPATH_USER_SWMINOR);
+ goto bail;
+ }
if (uinfo->spu_subport_cnt > INFINIPATH_MAX_SUBPORT) {
ret = -EINVAL;
goto bail;
}
- num_slaves = uinfo->spu_subport_cnt - 1;
- pd->subport_uregbase = vmalloc(PAGE_SIZE * num_slaves);
+ num_subports = uinfo->spu_subport_cnt;
+ pd->subport_uregbase = vmalloc(PAGE_SIZE * num_subports);
if (!pd->subport_uregbase) {
ret = -ENOMEM;
goto bail;
}
/* Note: pd->port_rcvhdrq_size isn't initialized yet. */
size = ALIGN(dd->ipath_rcvhdrcnt * dd->ipath_rcvhdrentsize *
- sizeof(u32), PAGE_SIZE) * num_slaves;
+ sizeof(u32), PAGE_SIZE) * num_subports;
pd->subport_rcvhdr_base = vmalloc(size);
if (!pd->subport_rcvhdr_base) {
ret = -ENOMEM;
@@ -1437,7 +1447,7 @@ static int init_subports(struct ipath_devdata *dd,
pd->subport_rcvegrbuf = vmalloc(pd->port_rcvegrbuf_chunks *
pd->port_rcvegrbuf_size *
- num_slaves);
+ num_subports);
if (!pd->subport_rcvegrbuf) {
ret = -ENOMEM;
goto bail_rhdr;
@@ -1447,6 +1457,11 @@ static int init_subports(struct ipath_devdata *dd,
pd->port_subport_id = uinfo->spu_subport_id;
pd->active_slaves = 1;
set_bit(IPATH_PORT_MASTER_UNINIT, &pd->port_flag);
+ memset(pd->subport_uregbase, 0, PAGE_SIZE * num_subports);
+ memset(pd->subport_rcvhdr_base, 0, size);
+ memset(pd->subport_rcvegrbuf, 0, pd->port_rcvegrbuf_chunks *
+ pd->port_rcvegrbuf_size *
+ num_subports);
goto bail;
bail_rhdr:
@@ -1588,7 +1603,7 @@ static int find_best_unit(struct file *fp,
if (curcpu != -1) {
if (npresent) {
prefunit = curcpu / (ncpus / npresent);
- ipath_dbg("%s[%u] %d chips, %d cpus, "
+ ipath_cdbg(PROC,"%s[%u] %d chips, %d cpus, "
"%d cpus/chip, select unit %d\n",
current->comm, current->pid,
npresent, ncpus, ncpus / npresent,
@@ -2086,7 +2101,7 @@ static ssize_t ipath_write(struct file *fp, const char __user *data,
dest = &cmd.cmd.part_key;
src = &ucmd->cmd.part_key;
break;
- case IPATH_CMD_SLAVE_INFO:
+ case __IPATH_CMD_SLAVE_INFO:
copy = sizeof(cmd.cmd.slave_mask_addr);
dest = &cmd.cmd.slave_mask_addr;
src = &ucmd->cmd.slave_mask_addr;
@@ -2152,7 +2167,7 @@ static ssize_t ipath_write(struct file *fp, const char __user *data,
case IPATH_CMD_SET_PART_KEY:
ret = ipath_set_part_key(pd, cmd.cmd.part_key);
break;
- case IPATH_CMD_SLAVE_INFO:
+ case __IPATH_CMD_SLAVE_INFO:
ret = ipath_get_slave_info(pd,
(void __user *) (unsigned long)
cmd.cmd.slave_mask_addr);
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-09 19:15:49 +0000