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virtio: rearrange resource initialization

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For clarity make the setup of PCI resources for Linux into a function rather
than block of code #ifdef'd in middle of dev_init.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>
Acked-by: Huawei Xie <huawei.xie@intel.com>
This commit is contained in:
Stephen Hemminger 2015-02-09 09:13:50 +08:00 committed by Thomas Monjalon
parent 3c21004855
commit 41d7fcf5e3
1 changed files with 43 additions and 33 deletions
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76
lib/librte_pmd_virtio/virtio_ethdev.c
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@ -794,6 +794,41 @@ virtio_has_msix(const struct rte_pci_addr *loc)
return (d != NULL);
}
/* Extract I/O port numbers from sysfs */
static int virtio_resource_init(struct rte_pci_device *pci_dev)
{
char dirname[PATH_MAX];
char filename[PATH_MAX];
unsigned long start, size;
if (get_uio_dev(&pci_dev->addr, dirname, sizeof(dirname)) < 0)
return -1;
/* get portio size */
snprintf(filename, sizeof(filename),
"%s/portio/port0/size", dirname);
if (parse_sysfs_value(filename, &size) < 0) {
PMD_INIT_LOG(ERR, "%s(): cannot parse size",
__func__);
return -1;
}
/* get portio start */
snprintf(filename, sizeof(filename),
"%s/portio/port0/start", dirname);
if (parse_sysfs_value(filename, &start) < 0) {
PMD_INIT_LOG(ERR, "%s(): cannot parse portio start",
__func__);
return -1;
}
pci_dev->mem_resource[0].addr = (void *)(uintptr_t)start;
pci_dev->mem_resource[0].len = (uint64_t)size;
PMD_INIT_LOG(DEBUG,
"PCI Port IO found start=0x%lx with size=0x%lx",
start, size);
return 0;
}
#else
static int
virtio_has_msix(const struct rte_pci_addr *loc __rte_unused)
@ -801,6 +836,12 @@ virtio_has_msix(const struct rte_pci_addr *loc __rte_unused)
/* nic_uio does not enable interrupts, return 0 (false). */
return 0;
}
static int virtio_resource_init(struct rte_pci_device *pci_dev __rte_unused)
{
/* no setup required */
return 0;
}
#endif
/*
@ -831,40 +872,9 @@ eth_virtio_dev_init(__rte_unused struct eth_driver *eth_drv,
return 0;
pci_dev = eth_dev->pci_dev;
if (virtio_resource_init(pci_dev) < 0)
return -1;
#ifdef RTE_EXEC_ENV_LINUXAPP
{
char dirname[PATH_MAX];
char filename[PATH_MAX];
unsigned long start, size;
if (get_uio_dev(&pci_dev->addr, dirname, sizeof(dirname)) < 0)
return -1;
/* get portio size */
snprintf(filename, sizeof(filename),
"%s/portio/port0/size", dirname);
if (parse_sysfs_value(filename, &size) < 0) {
PMD_INIT_LOG(ERR, "%s(): cannot parse size",
__func__);
return -1;
}
/* get portio start */
snprintf(filename, sizeof(filename),
"%s/portio/port0/start", dirname);
if (parse_sysfs_value(filename, &start) < 0) {
PMD_INIT_LOG(ERR, "%s(): cannot parse portio start",
__func__);
return -1;
}
pci_dev->mem_resource[0].addr = (void *)(uintptr_t)start;
pci_dev->mem_resource[0].len = (uint64_t)size;
PMD_INIT_LOG(DEBUG,
"PCI Port IO found start=0x%lx with size=0x%lx",
start, size);
}
#endif
hw->use_msix = virtio_has_msix(&pci_dev->addr);
hw->io_base = (uint32_t)(uintptr_t)pci_dev->mem_resource[0].addr;