Displaying 20 results from an estimated 38 matches for "lguest_dma".
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lguest_data
2007 Apr 18
0
[RFC/PATCH LGUEST X86_64 09/13] lguest64 devices
....h>
+#include <linux/uaccess.h>
+#include <asm/lguest.h>
+#include <asm/lguest_user.h>
+#include "lguest.h"
+
+static struct list_head dma_hash[64];
+
+/* FIXME: allow multi-page lengths. */
+static int check_dma_list(struct lguest_guest_info *linfo,
+ const struct lguest_dma *dma)
+{
+ unsigned int i;
+
+ for (i = 0; i < LGUEST_MAX_DMA_SECTIONS; i++) {
+ if (!dma->len[i])
+ return 1;
+ if (!lguest_address_ok(linfo, dma->addr[i]))
+ goto kill;
+ if (dma->len[i] > PAGE_SIZE)
+ goto kill;
+ /* We could do over a page, but is it worth it? */
+ if...
2007 Apr 18
0
[RFC/PATCH LGUEST X86_64 09/13] lguest64 devices
....h>
+#include <linux/uaccess.h>
+#include <asm/lguest.h>
+#include <asm/lguest_user.h>
+#include "lguest.h"
+
+static struct list_head dma_hash[64];
+
+/* FIXME: allow multi-page lengths. */
+static int check_dma_list(struct lguest_guest_info *linfo,
+ const struct lguest_dma *dma)
+{
+ unsigned int i;
+
+ for (i = 0; i < LGUEST_MAX_DMA_SECTIONS; i++) {
+ if (!dma->len[i])
+ return 1;
+ if (!lguest_address_ok(linfo, dma->addr[i]))
+ goto kill;
+ if (dma->len[i] > PAGE_SIZE)
+ goto kill;
+ /* We could do over a page, but is it worth it? */
+ if...
2007 Apr 18
0
[RFC/PATCH LGUEST X86_64 08/13] lguest64 user header.
...======================================================
--- /dev/null
+++ work-pv/include/asm-x86_64/lguest_user.h
@@ -0,0 +1,88 @@
+#ifndef _ASM_LGUEST_USER
+#define _ASM_LGUEST_USER
+
+/* Everything the "lguest" userspace program needs to know. */
+/* They can register up to 32 arrays of lguest_dma. */
+#define LGUEST_MAX_DMA 32
+
+/* How many devices? Assume each one wants up to two dma arrays per device. */
+#define LGUEST_MAX_DEVICES (LGUEST_MAX_DMA/2)
+
+/* At most we can dma 16 lguest_dma in one op. */
+#define LGUEST_MAX_DMA_SECTIONS 16
+
+struct lguest_dma
+{
+ /* 0 if free to be use...
2007 Apr 18
0
[RFC/PATCH LGUEST X86_64 08/13] lguest64 user header.
...======================================================
--- /dev/null
+++ work-pv/include/asm-x86_64/lguest_user.h
@@ -0,0 +1,88 @@
+#ifndef _ASM_LGUEST_USER
+#define _ASM_LGUEST_USER
+
+/* Everything the "lguest" userspace program needs to know. */
+/* They can register up to 32 arrays of lguest_dma. */
+#define LGUEST_MAX_DMA 32
+
+/* How many devices? Assume each one wants up to two dma arrays per device. */
+#define LGUEST_MAX_DEVICES (LGUEST_MAX_DMA/2)
+
+/* At most we can dma 16 lguest_dma in one op. */
+#define LGUEST_MAX_DMA_SECTIONS 16
+
+struct lguest_dma
+{
+ /* 0 if free to be use...
2007 May 09
3
[patch 8/9] lguest: the block driver
...isk structure for the kernel. */
+ struct gendisk *disk;
+
+ /* The major number for this disk. */
+ int major;
+ int irq;
+
+ unsigned long phys_addr;
+ /* The ioremap'ed block page. */
+ struct lguest_block_page *lb_page;
+
+ /* We only have a single request outstanding at a time. */
+ struct lguest_dma dma;
+ struct request *req;
+};
+
+/* Jens gave me this nice helper to end all chunks of a request. */
+static void end_entire_request(struct request *req, int uptodate)
+{
+ if (end_that_request_first(req, uptodate, req->hard_nr_sectors))
+ BUG();
+ add_disk_randomness(req->rq_disk);
+ blkd...
2007 May 09
3
[patch 8/9] lguest: the block driver
...isk structure for the kernel. */
+ struct gendisk *disk;
+
+ /* The major number for this disk. */
+ int major;
+ int irq;
+
+ unsigned long phys_addr;
+ /* The ioremap'ed block page. */
+ struct lguest_block_page *lb_page;
+
+ /* We only have a single request outstanding at a time. */
+ struct lguest_dma dma;
+ struct request *req;
+};
+
+/* Jens gave me this nice helper to end all chunks of a request. */
+static void end_entire_request(struct request *req, int uptodate)
+{
+ if (end_that_request_first(req, uptodate, req->hard_nr_sectors))
+ BUG();
+ add_disk_randomness(req->rq_disk);
+ blkd...
2007 May 10
4
[PATCH 0/5] lguest feedback tidyups
Hi all,
Gratefully-received recent feedback from CC'd was applied to excellent
effect (and the advice from Matt Mackall about my personal appearance is
best unrequited).
The patch is split in 5 parts to correspond with the 9 parts Andrew
sent out before, but here's the summary:
1) Sparse (thanks Christoph Hellwig):
- lguest_const can be static now
- lguest.c should include
2007 May 10
4
[PATCH 0/5] lguest feedback tidyups
Hi all,
Gratefully-received recent feedback from CC'd was applied to excellent
effect (and the advice from Matt Mackall about my personal appearance is
best unrequited).
The patch is split in 5 parts to correspond with the 9 parts Andrew
sent out before, but here's the summary:
1) Sparse (thanks Christoph Hellwig):
- lguest_const can be static now
- lguest.c should include
2007 May 09
1
[patch 3/9] lguest: the host code
..."lg.h"
+
+static struct list_head dma_hash[61];
+
+void lguest_io_init(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(dma_hash); i++)
+ INIT_LIST_HEAD(&dma_hash[i]);
+}
+
+/* FIXME: allow multi-page lengths. */
+static int check_dma_list(struct lguest *lg, const struct lguest_dma *dma)
+{
+ unsigned int i;
+
+ for (i = 0; i < LGUEST_MAX_DMA_SECTIONS; i++) {
+ if (!dma->len[i])
+ return 1;
+ if (!lguest_address_ok(lg, dma->addr[i], dma->len[i]))
+ goto kill;
+ if (dma->len[i] > PAGE_SIZE)
+ goto kill;
+ /* We could do over a page, but is it worth...
2007 May 09
1
[patch 3/9] lguest: the host code
..."lg.h"
+
+static struct list_head dma_hash[61];
+
+void lguest_io_init(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(dma_hash); i++)
+ INIT_LIST_HEAD(&dma_hash[i]);
+}
+
+/* FIXME: allow multi-page lengths. */
+static int check_dma_list(struct lguest *lg, const struct lguest_dma *dma)
+{
+ unsigned int i;
+
+ for (i = 0; i < LGUEST_MAX_DMA_SECTIONS; i++) {
+ if (!dma->len[i])
+ return 1;
+ if (!lguest_address_ok(lg, dma->addr[i], dma->len[i]))
+ goto kill;
+ if (dma->len[i] > PAGE_SIZE)
+ goto kill;
+ /* We could do over a page, but is it worth...
2007 May 09
0
[patch 6/9] lguest: the console driver
...gram; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/lguest_bus.h>
+#include "hvc_console.h"
+
+static char inbuf[256];
+static struct lguest_dma cons_input = { .used_len = 0,
+ .addr[0] = __pa(inbuf),
+ .len[0] = sizeof(inbuf),
+ .len[1] = 0 };
+
+static int put_chars(u32 vtermno, const char *buf, int count)
+{
+ struct lguest_dma dma;
+
+ /* FIXME: what if it's over a page boundary? */
+ dma.len[0] = count;
+ dma.len[1] = 0...
2007 May 09
0
[patch 6/9] lguest: the console driver
...gram; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/lguest_bus.h>
+#include "hvc_console.h"
+
+static char inbuf[256];
+static struct lguest_dma cons_input = { .used_len = 0,
+ .addr[0] = __pa(inbuf),
+ .len[0] = sizeof(inbuf),
+ .len[1] = 0 };
+
+static int put_chars(u32 vtermno, const char *buf, int count)
+{
+ struct lguest_dma dma;
+
+ /* FIXME: what if it's over a page boundary? */
+ dma.len[0] = count;
+ dma.len[1] = 0...
2007 Sep 10
1
[PATCH] Add macros for acessing lguest fields
...s_process_vm(lg->tsk, addr, (void *)buf, bytes, 1)
+ || (access_process_vm(lguest_task(lg), addr, (void *)buf, bytes, 1)
!= bytes)) {
kill_guest(lg, "bad address writing to registered DMA");
return 0;
@@ -376,7 +376,7 @@ static u32 do_dma(struct lguest *srclg, const struct lguest_dma *src,
* we only want a single page. But it works, and returns the
* number of pages. Note that we're holding the destination's
* mmap_sem, as get_user_pages() requires. */
- if (get_user_pages(dstlg->tsk, dstlg->mm,
+ if (get_user_pages(lguest_task(dstlg), dstlg->mm...
2007 Sep 10
1
[PATCH] Add macros for acessing lguest fields
...s_process_vm(lg->tsk, addr, (void *)buf, bytes, 1)
+ || (access_process_vm(lguest_task(lg), addr, (void *)buf, bytes, 1)
!= bytes)) {
kill_guest(lg, "bad address writing to registered DMA");
return 0;
@@ -376,7 +376,7 @@ static u32 do_dma(struct lguest *srclg, const struct lguest_dma *src,
* we only want a single page. But it works, and returns the
* number of pages. Note that we're holding the destination's
* mmap_sem, as get_user_pages() requires. */
- if (get_user_pages(dstlg->tsk, dstlg->mm,
+ if (get_user_pages(lguest_task(dstlg), dstlg->mm...
2007 May 09
3
[patch 7/9] lguest: the net driver
...SIZE PAGE_SIZE
+#define MAX_LANS 4
+#define NUM_SKBS 8
+
+struct lguestnet_info
+{
+ /* The shared page(s). */
+ struct lguest_net *peer;
+ unsigned long peer_phys;
+ unsigned long mapsize;
+
+ /* My peerid. */
+ unsigned int me;
+
+ /* Receive queue. */
+ struct sk_buff *skb[NUM_SKBS];
+ struct lguest_dma dma[NUM_SKBS];
+};
+
+/* How many bytes left in this page. */
+static unsigned int rest_of_page(void *data)
+{
+ return PAGE_SIZE - ((unsigned long)data % PAGE_SIZE);
+}
+
+/* Simple convention: offset 4 * peernum. */
+static unsigned long peer_key(struct lguestnet_info *info, unsigned peernum)
+{...
2007 May 09
3
[patch 7/9] lguest: the net driver
...SIZE PAGE_SIZE
+#define MAX_LANS 4
+#define NUM_SKBS 8
+
+struct lguestnet_info
+{
+ /* The shared page(s). */
+ struct lguest_net *peer;
+ unsigned long peer_phys;
+ unsigned long mapsize;
+
+ /* My peerid. */
+ unsigned int me;
+
+ /* Receive queue. */
+ struct sk_buff *skb[NUM_SKBS];
+ struct lguest_dma dma[NUM_SKBS];
+};
+
+/* How many bytes left in this page. */
+static unsigned int rest_of_page(void *data)
+{
+ return PAGE_SIZE - ((unsigned long)data % PAGE_SIZE);
+}
+
+/* Simple convention: offset 4 * peernum. */
+static unsigned long peer_key(struct lguestnet_info *info, unsigned peernum)
+{...
2007 Sep 25
50
[patch 00/43] lguest: Patches for 2.6.24 (and patchbomb test)
Hi all,
These are the patches I'm planning to submit for 2.6.24. Comments
gratefully accepted. Along with the usual cleanups and improvements are Jes'
de-i386-ification patches, and a new "virtio" mechanism designed to be shared
with KVM (and hopefully other hypervisors).
Cheers,
Rusty.
Documentation/lguest/Makefile | 30
Documentation/lguest/lguest.c
2007 Sep 25
50
[patch 00/43] lguest: Patches for 2.6.24 (and patchbomb test)
Hi all,
These are the patches I'm planning to submit for 2.6.24. Comments
gratefully accepted. Along with the usual cleanups and improvements are Jes'
de-i386-ification patches, and a new "virtio" mechanism designed to be shared
with KVM (and hopefully other hypervisors).
Cheers,
Rusty.
Documentation/lguest/Makefile | 30
Documentation/lguest/lguest.c
2007 Apr 18
0
[RFC/PATCH LGUEST X86_64 11/13] x86_64 HVC attempt.
...ole.o
Index: work-pv/drivers/char/hvc_lguest.c
===================================================================
--- work-pv.orig/drivers/char/hvc_lguest.c
+++ work-pv/drivers/char/hvc_lguest.c
@@ -25,7 +25,6 @@ static int cons_irq;
static int cons_offset;
static char inbuf[256];
static struct lguest_dma cons_input = { .used_len = 0,
- .addr[0] = __pa(inbuf),
.len[0] = sizeof(inbuf),
.len[1] = 0 };
@@ -66,6 +65,12 @@ struct hv_ops lguest_cons = {
static int __init cons_init(void)
{
+ /*
+ * Can't initialize this in the const declarations,
+ * since __pa(inbuf) does not e...
2007 Apr 18
0
[RFC/PATCH LGUEST X86_64 11/13] x86_64 HVC attempt.
...ole.o
Index: work-pv/drivers/char/hvc_lguest.c
===================================================================
--- work-pv.orig/drivers/char/hvc_lguest.c
+++ work-pv/drivers/char/hvc_lguest.c
@@ -25,7 +25,6 @@ static int cons_irq;
static int cons_offset;
static char inbuf[256];
static struct lguest_dma cons_input = { .used_len = 0,
- .addr[0] = __pa(inbuf),
.len[0] = sizeof(inbuf),
.len[1] = 0 };
@@ -66,6 +65,12 @@ struct hv_ops lguest_cons = {
static int __init cons_init(void)
{
+ /*
+ * Can't initialize this in the const declarations,
+ * since __pa(inbuf) does not e...