[dpdk-dev] [PATCH v2 13/15] eal: Consolidate pci_map/unmap_resource() of linuxapp and bsdapp
Iremonger, Bernard
bernard.iremonger at intel.com
Fri Mar 13 16:23:24 CET 2015
> -----Original Message-----
> From: Tetsuya Mukawa [mailto:mukawa at igel.co.jp]
> Sent: Thursday, March 12, 2015 10:18 AM
> To: dev at dpdk.org
> Cc: Iremonger, Bernard; Richardson, Bruce; Tetsuya Mukawa
> Subject: [PATCH v2 13/15] eal: Consolidate pci_map/unmap_resource() of linuxapp and bsdapp
>
> The patch consolidates below functions, and implemented in common eal code.
> - pci_map_resource()
> - pci_unmap_resource()
>
> Signed-off-by: Tetsuya Mukawa <mukawa at igel.co.jp>
> ---
> lib/librte_eal/bsdapp/eal/eal_pci.c | 24 -----------------
> lib/librte_eal/common/eal_common_pci.c | 43 ++++++++++++++++++++++++++++++
> lib/librte_eal/common/include/rte_pci.h | 11 ++++++++
> lib/librte_eal/linuxapp/eal/eal_pci.c | 42 -----------------------------
> lib/librte_eal/linuxapp/eal/eal_pci_init.h | 5 ----
> 5 files changed, 54 insertions(+), 71 deletions(-)
>
> diff --git a/lib/librte_eal/bsdapp/eal/eal_pci.c b/lib/librte_eal/bsdapp/eal/eal_pci.c
> index 1e42e42..d7d6439 100644
> --- a/lib/librte_eal/bsdapp/eal/eal_pci.c
> +++ b/lib/librte_eal/bsdapp/eal/eal_pci.c
> @@ -46,7 +46,6 @@
> #include <dirent.h>
> #include <limits.h>
> #include <sys/queue.h>
> -#include <sys/mman.h>
> #include <sys/ioctl.h>
> #include <sys/pciio.h>
> #include <dev/pci/pcireg.h>
> @@ -96,29 +95,6 @@ pci_unbind_kernel_driver(struct rte_pci_device *dev __rte_unused)
> return -ENOTSUP;
> }
>
> -/* map a particular resource from a file */ -static void * -pci_map_resource(void *requested_addr,
> int fd, off_t offset, size_t size,
> - int additional_flags)
> -{
> - void *mapaddr;
> -
> - /* Map the PCI memory resource of device */
> - mapaddr = mmap(requested_addr, size, PROT_READ | PROT_WRITE,
> - MAP_SHARED | additional_flags, fd, offset);
> - if (mapaddr == MAP_FAILED) {
> - RTE_LOG(ERR, EAL,
> - "%s(): cannot mmap(%d, %p, 0x%lx, 0x%lx): %s (%p)\n",
> - __func__, fd, requested_addr,
> - (unsigned long)size, (unsigned long)offset,
> - strerror(errno), mapaddr);
> - } else {
> - RTE_LOG(DEBUG, EAL, " PCI memory mapped at %p\n", mapaddr);
> - }
> -
> - return mapaddr;
> -}
> -
> static int
> pci_uio_map_secondary(struct rte_pci_device *dev) { diff --git
> a/lib/librte_eal/common/eal_common_pci.c b/lib/librte_eal/common/eal_common_pci.c
> index 726026f..6d98194 100644
> --- a/lib/librte_eal/common/eal_common_pci.c
> +++ b/lib/librte_eal/common/eal_common_pci.c
> @@ -67,6 +67,7 @@
> #include <stdlib.h>
> #include <stdio.h>
> #include <sys/queue.h>
> +#include <sys/mman.h>
>
> #include <rte_interrupts.h>
> #include <rte_log.h>
> @@ -98,6 +99,48 @@ static struct rte_devargs *pci_devargs_lookup(struct rte_pci_device *dev)
> return NULL;
> }
>
> +/* map a particular resource from a file */ void *
> +pci_map_resource(void *requested_addr, int fd, off_t offset, size_t size,
> + int additional_flags)
> +{
> + void *mapaddr;
> +
> + /* Map the PCI memory resource of device */
> + mapaddr = mmap(requested_addr, size, PROT_READ | PROT_WRITE,
> + MAP_SHARED | additional_flags, fd, offset);
> + if (mapaddr == MAP_FAILED) {
> + RTE_LOG(ERR, EAL,
> + "%s(): cannot mmap(%d, %p, 0x%lx, 0x%lx): %s (%p)\n",
> + __func__, fd, requested_addr,
> + (unsigned long)size, (unsigned long)offset,
> + strerror(errno), mapaddr);
> + } else {
> + RTE_LOG(DEBUG, EAL, " PCI memory mapped at %p\n", mapaddr);
> + }
> +
> + return mapaddr;
> +}
> +
> +#ifdef RTE_LIBRTE_EAL_HOTPLUG
Hi Tetsuya,
Can #ifdef RTE_LIBRTE_EAL_HOTPLUG be removed as code is now in eal_common_pci.c ?
Regards,
Bernard.
> +/* unmap a particular resource */
> +void
> +pci_unmap_resource(void *requested_addr, size_t size) {
> + if (requested_addr == NULL)
> + return;
> +
> + /* Unmap the PCI memory resource of device */
> + if (munmap(requested_addr, size)) {
> + RTE_LOG(ERR, EAL, "%s(): cannot munmap(%p, 0x%lx): %s\n",
> + __func__, requested_addr, (unsigned long)size,
> + strerror(errno));
> + } else
> + RTE_LOG(DEBUG, EAL, " PCI memory unmapped at %p\n",
> + requested_addr);
> +}
> +#endif /* RTE_LIBRTE_EAL_HOTPLUG */
Hi Tetsuya,
Can #endif be removed too as code is now in eal_common_pci.c ?
Regards,
Bernard.
> +
> /* Map pci device */
> static int
> pci_map_device(struct rte_pci_device *dev) diff --git a/lib/librte_eal/common/include/rte_pci.h
> b/lib/librte_eal/common/include/rte_pci.h
> index 47345b8..d3b883e 100644
> --- a/lib/librte_eal/common/include/rte_pci.h
> +++ b/lib/librte_eal/common/include/rte_pci.h
> @@ -363,8 +363,19 @@ int rte_eal_pci_scan(void);
> */
> int rte_eal_pci_probe(void);
>
> +/**
> + * Map pci resouce.
> + */
> +void *pci_map_resource(void *requested_addr, int fd, off_t offset,
> + size_t size, int additional_flags);
> +
> #ifdef RTE_LIBRTE_EAL_HOTPLUG
> /**
> + * Map pci resouce.
> + */
> +void pci_unmap_resource(void *requested_addr, size_t size);
> +
> +/**
> * Probe the single PCI device.
> *
> * Scan the content of the PCI bus, and find the pci device specified by pci diff --git
> a/lib/librte_eal/linuxapp/eal/eal_pci.c b/lib/librte_eal/linuxapp/eal/eal_pci.c
> index 6a8153c..d072e98 100644
> --- a/lib/librte_eal/linuxapp/eal/eal_pci.c
> +++ b/lib/librte_eal/linuxapp/eal/eal_pci.c
> @@ -33,7 +33,6 @@
>
> #include <string.h>
> #include <dirent.h>
> -#include <sys/mman.h>
>
> #include <rte_log.h>
> #include <rte_pci.h>
> @@ -142,47 +141,6 @@ pci_find_max_end_va(void)
> return RTE_PTR_ADD(last->addr, last->len); }
>
> -
> -/* map a particular resource from a file */ -void * -pci_map_resource(void *requested_addr, int fd,
> off_t offset, size_t size,
> - int additional_flags)
> -{
> - void *mapaddr;
> -
> - /* Map the PCI memory resource of device */
> - mapaddr = mmap(requested_addr, size, PROT_READ | PROT_WRITE,
> - MAP_SHARED | additional_flags, fd, offset);
> - if (mapaddr == MAP_FAILED) {
> - RTE_LOG(ERR, EAL,
> - "%s(): cannot mmap(%d, %p, 0x%lx, 0x%lx): %s (%p)\n",
> - __func__, fd, requested_addr,
> - (unsigned long)size, (unsigned long)offset,
> - strerror(errno), mapaddr);
> - } else {
> - RTE_LOG(DEBUG, EAL, " PCI memory mapped at %p\n", mapaddr);
> - }
> -
> - return mapaddr;
> -}
> -
> -/* unmap a particular resource */
> -void
> -pci_unmap_resource(void *requested_addr, size_t size) -{
> - if (requested_addr == NULL)
> - return;
> -
> - /* Unmap the PCI memory resource of device */
> - if (munmap(requested_addr, size)) {
> - RTE_LOG(ERR, EAL, "%s(): cannot munmap(%p, 0x%lx): %s\n",
> - __func__, requested_addr, (unsigned long)size,
> - strerror(errno));
> - } else
> - RTE_LOG(DEBUG, EAL, " PCI memory unmapped at %p\n",
> - requested_addr);
> -}
> -
> /* parse the "resource" sysfs file */
> static int
> pci_parse_sysfs_resource(const char *filename, struct rte_pci_device *dev) diff --git
> a/lib/librte_eal/linuxapp/eal/eal_pci_init.h b/lib/librte_eal/linuxapp/eal/eal_pci_init.h
> index d9d1878..d426b27 100644
> --- a/lib/librte_eal/linuxapp/eal/eal_pci_init.h
> +++ b/lib/librte_eal/linuxapp/eal/eal_pci_init.h
> @@ -42,14 +42,9 @@
> extern void *pci_map_addr;
> void *pci_find_max_end_va(void);
>
> -void *pci_map_resource(void *requested_addr, int fd, off_t offset,
> - size_t size, int additional_flags);
> -
> /* map IGB_UIO resource prototype */
> int pci_uio_map_resource(struct rte_pci_device *dev);
>
> -void pci_unmap_resource(void *requested_addr, size_t size);
> -
> #ifdef RTE_LIBRTE_EAL_HOTPLUG
Hi Tetsuya,
Can #ifdef RTE_LIBRTE_EAL_HOTPLUG be removed ?
Regards,
Bernard.
> /* unmap IGB_UIO resource prototype */
> void pci_uio_unmap_resource(struct rte_pci_device *dev);
> --
> 1.9.1
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