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env/vtophys: Remove duplicated code in spdk_vtophys_notify

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Both the register and unregister paths did the same splitting
on 2MB boundaries, so do that first and then switch on
the action.

Change-Id: I532c42a698c2d423d3ecb48bc0d964e766cf742b
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/375247
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
This commit is contained in:
Ben Walker 2017-08-22 15:34:34 -07:00 committed by Jim Harris
parent a10779ca75
commit 4f4bc79e98
1 changed files with 45 additions and 88 deletions
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85
lib/env_dpdk/vtophys.c
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@ -62,6 +62,7 @@
#define SHIFT_2MB 21 /* (1 << 21) == 2MB */
#define MASK_2MB ((1ULL << SHIFT_2MB) - 1)
#define VALUE_2MB (1 << SHIFT_2MB)
#define SHIFT_4KB 12 /* (1 << 12) == 4KB */
#define MASK_4KB ((1ULL << SHIFT_4KB) - 1)
@ -464,10 +465,12 @@ vtophys_get_paddr(uint64_t vaddr)
}
static int
spdk_vtophys_register(void *vaddr, uint64_t len)
spdk_vtophys_notify(void *cb_ctx, struct spdk_mem_map *map,
enum spdk_mem_map_notify_action action,
void *vaddr, size_t len)
{
uint64_t vfn_2mb;
int rc;
int rc = 0;
uint64_t paddr;
if ((uintptr_t)vaddr & ~MASK_128TB) {
DEBUG_PRINT("invalid usermode virtual address %p\n", vaddr);
@ -480,15 +483,13 @@ spdk_vtophys_register(void *vaddr, uint64_t len)
return -EINVAL;
}
vfn_2mb = (uintptr_t)vaddr >> SHIFT_2MB;
len = len >> SHIFT_2MB;
while (len > 0) {
uint64_t vaddr = vfn_2mb << SHIFT_2MB;
uint64_t paddr = vtophys_get_paddr(vaddr);
switch (action) {
case SPDK_MEM_MAP_NOTIFY_REGISTER:
paddr = vtophys_get_paddr((uint64_t)vaddr);
if (paddr == RTE_BAD_PHYS_ADDR) {
DEBUG_PRINT("could not get phys addr for 0x%" PRIx64 "\n", vaddr);
DEBUG_PRINT("could not get phys addr for %p\n", vaddr);
return -EFAULT;
}
@ -497,67 +498,22 @@ spdk_vtophys_register(void *vaddr, uint64_t len)
return -EINVAL;
}
rc = spdk_mem_map_set_translation(g_vtophys_map, vaddr, 1 << SHIFT_2MB, paddr);
if (rc != 0) {
return rc;
}
vfn_2mb++;
len--;
}
return 0;
}
static int
spdk_vtophys_unregister(void *vaddr, uint64_t len)
{
uint64_t vfn_2mb;
int rc;
if ((uintptr_t)vaddr & ~MASK_128TB) {
DEBUG_PRINT("invalid usermode virtual address %p\n", vaddr);
return -EINVAL;
}
if (((uintptr_t)vaddr & MASK_2MB) || (len & MASK_2MB)) {
DEBUG_PRINT("invalid %s parameters, vaddr=%p len=%ju\n",
__func__, vaddr, len);
return -EINVAL;
}
vfn_2mb = (uintptr_t)vaddr >> SHIFT_2MB;
len = len >> SHIFT_2MB;
while (len > 0) {
rc = spdk_mem_map_clear_translation(g_vtophys_map, vfn_2mb << SHIFT_2MB, 1 << SHIFT_2MB);
if (rc != 0) {
return rc;
}
vfn_2mb++;
len--;
}
return 0;
}
static int
spdk_vtophys_notify(void *cb_ctx, struct spdk_mem_map *map,
enum spdk_mem_map_notify_action action,
void *vaddr, size_t len)
{
int rc;
switch (action) {
case SPDK_MEM_MAP_NOTIFY_REGISTER:
rc = spdk_vtophys_register(vaddr, len);
rc = spdk_mem_map_set_translation(g_vtophys_map, (uint64_t)vaddr, VALUE_2MB, paddr);
break;
case SPDK_MEM_MAP_NOTIFY_UNREGISTER:
rc = spdk_vtophys_unregister(vaddr, len);
rc = spdk_mem_map_clear_translation(g_vtophys_map, (uint64_t)vaddr, VALUE_2MB);
break;
default:
SPDK_UNREACHABLE();
}
if (rc != 0) {
return rc;
}
vaddr += VALUE_2MB;
len -= VALUE_2MB;
}
return rc;
}
@ -582,7 +538,8 @@ spdk_vtophys_register_dpdk_mem(void)
break;
}
spdk_vtophys_register(seg->addr, seg->len);
spdk_vtophys_notify(NULL, g_vtophys_map, SPDK_MEM_MAP_NOTIFY_REGISTER,
seg->addr, seg->len);
}
}