Displaying 20 results from an estimated 20 matches for "lguest_max_dma_sect".
2007 Apr 18
0
[RFC/PATCH LGUEST X86_64 08/13] lguest64 user header.
...ogram 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 used, filled by hypervisor. */
+ u64 used_len;
+ u64 addr[LGUEST_MAX_DMA_SECTIONS];
+ u16 len[LGUEST_MAX_DMA_SECTIONS];
+};
+
+/* This is found at address 0. */
+struct lguest_boot_info
+{
+ u32 max_pfn;
+ u32 initrd_size;
+ char cmdline[256];
+}...
2007 Apr 18
0
[RFC/PATCH LGUEST X86_64 08/13] lguest64 user header.
...ogram 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 used, filled by hypervisor. */
+ u64 used_len;
+ u64 addr[LGUEST_MAX_DMA_SECTIONS];
+ u16 len[LGUEST_MAX_DMA_SECTIONS];
+};
+
+/* This is found at address 0. */
+struct lguest_boot_info
+{
+ u32 max_pfn;
+ u32 initrd_size;
+ char cmdline[256];
+}...
2007 Apr 18
0
[RFC/PATCH LGUEST X86_64 09/13] lguest64 devices
...uest.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 ((dma->addr[i] % PAGE_SIZE) + dma->len[i] > PAGE_SIZE)
+ go...
2007 Apr 18
0
[RFC/PATCH LGUEST X86_64 09/13] lguest64 devices
...uest.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 ((dma->addr[i] % PAGE_SIZE) + dma->len[i] > PAGE_SIZE)
+ go...
2007 May 09
3
[patch 8/9] lguest: the block driver
...p;bd->lock, flags);
+ return IRQ_HANDLED;
+}
+
+static unsigned int req_to_dma(struct request *req, struct lguest_dma *dma)
+{
+ unsigned int i = 0, idx, len = 0;
+ struct bio *bio;
+
+ rq_for_each_bio(bio, req) {
+ struct bio_vec *bvec;
+ bio_for_each_segment(bvec, bio, idx) {
+ BUG_ON(i == LGUEST_MAX_DMA_SECTIONS);
+ BUG_ON(!bvec->bv_len);
+ dma->addr[i] = page_to_phys(bvec->bv_page)
+ + bvec->bv_offset;
+ dma->len[i] = bvec->bv_len;
+ len += bvec->bv_len;
+ i++;
+ }
+ }
+ if (i < LGUEST_MAX_DMA_SECTIONS)
+ dma->len[i] = 0;
+ return len;
+}
+
+static void empty_...
2007 May 09
3
[patch 8/9] lguest: the block driver
...p;bd->lock, flags);
+ return IRQ_HANDLED;
+}
+
+static unsigned int req_to_dma(struct request *req, struct lguest_dma *dma)
+{
+ unsigned int i = 0, idx, len = 0;
+ struct bio *bio;
+
+ rq_for_each_bio(bio, req) {
+ struct bio_vec *bvec;
+ bio_for_each_segment(bvec, bio, idx) {
+ BUG_ON(i == LGUEST_MAX_DMA_SECTIONS);
+ BUG_ON(!bvec->bv_len);
+ dma->addr[i] = page_to_phys(bvec->bv_page)
+ + bvec->bv_offset;
+ dma->len[i] = bvec->bv_len;
+ len += bvec->bv_len;
+ i++;
+ }
+ }
+ if (i < LGUEST_MAX_DMA_SECTIONS)
+ dma->len[i] = 0;
+ return len;
+}
+
+static void empty_...
2007 Apr 18
0
[RFC/PATCH LGUEST X86_64 07/13] lguest64 loader
...;used_len */
+static u32 *dma2iov(unsigned long dma, struct iovec iov[], unsigned *num)
+{
+ unsigned int i;
+ struct lguest_dma *udma;
+
+ /* No buffers? */
+ if (dma == 0) {
+ printf("no buffers\n");
+ return NULL;
+ }
+
+ udma = check_pointer(dma, sizeof(*udma));
+ for (i = 0; i < LGUEST_MAX_DMA_SECTIONS; i++) {
+ if (!udma->len[i])
+ break;
+
+ iov[i].iov_base = check_pointer(udma->addr[i], udma->len[i]);
+ iov[i].iov_len = udma->len[i];
+ }
+ *num = i;
+ return &udma->used_len;
+}
+
+static u32 *get_dma_buffer(int fd, void *addr,
+ struct iovec iov[], unsigned *nu...
2007 Apr 18
0
[RFC/PATCH LGUEST X86_64 07/13] lguest64 loader
...;used_len */
+static u32 *dma2iov(unsigned long dma, struct iovec iov[], unsigned *num)
+{
+ unsigned int i;
+ struct lguest_dma *udma;
+
+ /* No buffers? */
+ if (dma == 0) {
+ printf("no buffers\n");
+ return NULL;
+ }
+
+ udma = check_pointer(dma, sizeof(*udma));
+ for (i = 0; i < LGUEST_MAX_DMA_SECTIONS; i++) {
+ if (!udma->len[i])
+ break;
+
+ iov[i].iov_base = check_pointer(udma->addr[i], udma->len[i]);
+ iov[i].iov_len = udma->len[i];
+ }
+ *num = i;
+ return &udma->used_len;
+}
+
+static u32 *get_dma_buffer(int fd, void *addr,
+ struct iovec iov[], unsigned *nu...
2007 Apr 18
1
[PATCH 0/2] Use a single loader for i386 and x86_64
...riggering irq %i", irq);
}
@@ -486,7 +632,8 @@ struct console_abort
/* We DMA input to buffer bound at start of console page. */
static int handle_console_input(int fd, struct device *dev)
{
- u32 num, irq = 0, *lenp;
+ u32 num, irq = 0;
+ unsigned long *lenp;
int len;
struct iovec iov[LGUEST_MAX_DMA_SECTIONS];
struct console_abort *abort = dev->priv;
@@ -535,19 +682,20 @@ static unsigned long peer_offset(unsigne
return 4 * peernum;
}
-static u32 handle_tun_output(int fd, const struct iovec *iov,
- unsigned num, struct device *dev)
+static unsigned long handle_tun_output(int fd, con...
2007 Apr 18
1
[PATCH 0/2] Use a single loader for i386 and x86_64
...riggering irq %i", irq);
}
@@ -486,7 +632,8 @@ struct console_abort
/* We DMA input to buffer bound at start of console page. */
static int handle_console_input(int fd, struct device *dev)
{
- u32 num, irq = 0, *lenp;
+ u32 num, irq = 0;
+ unsigned long *lenp;
int len;
struct iovec iov[LGUEST_MAX_DMA_SECTIONS];
struct console_abort *abort = dev->priv;
@@ -535,19 +682,20 @@ static unsigned long peer_offset(unsigne
return 4 * peernum;
}
-static u32 handle_tun_output(int fd, const struct iovec *iov,
- unsigned num, struct device *dev)
+static unsigned long handle_tun_output(int fd, con...
2007 May 14
5
[PATCH 1/6] lguest: host code tidyups
...lg->changed |= CHANGED_GDT;
}
===================================================================
--- a/include/linux/lguest_launcher.h
+++ b/include/linux/lguest_launcher.h
@@ -13,7 +13,7 @@ struct lguest_dma
{
/* 0 if free to be used, filled by hypervisor. */
u32 used_len;
- u32 addr[LGUEST_MAX_DMA_SECTIONS];
+ unsigned long addr[LGUEST_MAX_DMA_SECTIONS];
u16 len[LGUEST_MAX_DMA_SECTIONS];
};
2007 May 14
5
[PATCH 1/6] lguest: host code tidyups
...lg->changed |= CHANGED_GDT;
}
===================================================================
--- a/include/linux/lguest_launcher.h
+++ b/include/linux/lguest_launcher.h
@@ -13,7 +13,7 @@ struct lguest_dma
{
/* 0 if free to be used, filled by hypervisor. */
u32 used_len;
- u32 addr[LGUEST_MAX_DMA_SECTIONS];
+ unsigned long addr[LGUEST_MAX_DMA_SECTIONS];
u16 len[LGUEST_MAX_DMA_SECTIONS];
};
2007 May 09
0
[patch 9/9] lguest: the documentation, example launcher
...ne check_pointer(addr,size) _check_pointer(addr, size, __LINE__)
+
+/* Returns pointer to dma->used_len */
+static u32 *dma2iov(unsigned long dma, struct iovec iov[], unsigned *num)
+{
+ unsigned int i;
+ struct lguest_dma *udma;
+
+ udma = check_pointer(dma, sizeof(*udma));
+ for (i = 0; i < LGUEST_MAX_DMA_SECTIONS; i++) {
+ if (!udma->len[i])
+ break;
+
+ iov[i].iov_base = check_pointer(udma->addr[i], udma->len[i]);
+ iov[i].iov_len = udma->len[i];
+ }
+ *num = i;
+ return &udma->used_len;
+}
+
+static u32 *get_dma_buffer(int fd, void *key,
+ struct iovec iov[], unsigned int...
2007 May 09
0
[patch 9/9] lguest: the documentation, example launcher
...ne check_pointer(addr,size) _check_pointer(addr, size, __LINE__)
+
+/* Returns pointer to dma->used_len */
+static u32 *dma2iov(unsigned long dma, struct iovec iov[], unsigned *num)
+{
+ unsigned int i;
+ struct lguest_dma *udma;
+
+ udma = check_pointer(dma, sizeof(*udma));
+ for (i = 0; i < LGUEST_MAX_DMA_SECTIONS; i++) {
+ if (!udma->len[i])
+ break;
+
+ iov[i].iov_base = check_pointer(udma->addr[i], udma->len[i]);
+ iov[i].iov_len = udma->len[i];
+ }
+ *num = i;
+ return &udma->used_len;
+}
+
+static u32 *get_dma_buffer(int fd, void *key,
+ struct iovec iov[], unsigned int...
2007 May 09
1
[patch 3/9] lguest: the host code
...+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 it? */
+ if ((dma->addr[i] % PAGE_SIZE) + dma->len[i] > PAGE...
2007 May 09
1
[patch 3/9] lguest: the host code
...+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 it? */
+ if ((dma->addr[i] % PAGE_SIZE) + dma->len[i] > PAGE...
2007 May 09
3
[patch 7/9] lguest: the net driver
...dma->len[seg] = min((unsigned)(headlen - i),
+ rest_of_page(skb->data + i));
+ }
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++, seg++) {
+ const skb_frag_t *f = &skb_shinfo(skb)->frags[i];
+ /* Should not happen with MTU less than 64k - 2 * PAGE_SIZE. */
+ if (seg == LGUEST_MAX_DMA_SECTIONS) {
+ printk("Woah dude! Megapacket!\n");
+ break;
+ }
+ dma->addr[seg] = page_to_phys(f->page) + f->page_offset;
+ dma->len[seg] = f->size;
+ }
+ if (seg < LGUEST_MAX_DMA_SECTIONS)
+ dma->len[seg] = 0;
+}
+
+/* We overload multicast bit to show promiscuou...
2007 May 09
3
[patch 7/9] lguest: the net driver
...dma->len[seg] = min((unsigned)(headlen - i),
+ rest_of_page(skb->data + i));
+ }
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++, seg++) {
+ const skb_frag_t *f = &skb_shinfo(skb)->frags[i];
+ /* Should not happen with MTU less than 64k - 2 * PAGE_SIZE. */
+ if (seg == LGUEST_MAX_DMA_SECTIONS) {
+ printk("Woah dude! Megapacket!\n");
+ break;
+ }
+ dma->addr[seg] = page_to_phys(f->page) + f->page_offset;
+ dma->len[seg] = f->size;
+ }
+ if (seg < LGUEST_MAX_DMA_SECTIONS)
+ dma->len[seg] = 0;
+}
+
+/* We overload multicast bit to show promiscuou...
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