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SPDK: define spdk_* macros for getting info of pci_device

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This patch is used to wrap the inner implementation
of libpciaccess and prepare for the same interface
to applications in the future patch

Change-Id: I4d40fae0bd86b451ed38dbfd9bcc015f9bfc8436
Signed-off-by: Ziye Yang <ziye.yang@intel.com>
This commit is contained in:
Ziye Yang 2016-01-25 15:39:28 +08:00 committed by Gerrit Code Review
parent 92fa3ec537
commit 9195cfb207
2 changed files with 45 additions and 26 deletions
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7
include/spdk/pci.h
View File

@ -34,6 +34,13 @@
#ifndef SPDK_PCI_H #ifndef SPDK_PCI_H
#define SPDK_PCI_H #define SPDK_PCI_H
#define spdk_pci_device_get_domain(dev) (dev->domain)
#define spdk_pci_device_get_bus(dev) (dev->bus)
#define spdk_pci_device_get_dev(dev) (dev->dev)
#define spdk_pci_device_get_func(dev) (dev->func)
#define spdk_pci_device_get_vendor_id(dev) (dev->vendor_id)
#define spdk_pci_device_get_device_id(dev) (dev->device_id)
#define PCI_CFG_SIZE 256 #define PCI_CFG_SIZE 256
#define PCI_EXT_CAP_ID_SN 0x03 #define PCI_EXT_CAP_ID_SN 0x03
#define PCI_UIO_DRIVER "uio_pci_generic" #define PCI_UIO_DRIVER "uio_pci_generic"

62
lib/util/pci.c
View File

@ -54,6 +54,11 @@
#define PCI_PRI_FMT "%04x:%02x:%02x.%1u" #define PCI_PRI_FMT "%04x:%02x:%02x.%1u"
#define SPDK_PCI_PATH_MAX 256 #define SPDK_PCI_PATH_MAX 256
/* var should be the pointer */
#define spdk_pcicfg_read32(handle, var, offset) pci_device_cfg_read_u32(handle, var, offset)
#define spdk_pcicfg_write32(handle, var, offset) pci_device_cfg_write_u32(handle, *var, offset)
int int
pci_device_get_serial_number(struct pci_device *dev, char *sn, int len) pci_device_get_serial_number(struct pci_device *dev, char *sn, int len)
{ {
@ -64,7 +69,7 @@ pci_device_get_serial_number(struct pci_device *dev, char *sn, int len)
if (len < 17) if (len < 17)
return -1; return -1;
err = pci_device_cfg_read_u32(dev, &header, PCI_CFG_SIZE); err = spdk_pcicfg_read32(dev, &header, PCI_CFG_SIZE);
if (err || !header) if (err || !header)
return -1; return -1;
@ -75,7 +80,7 @@ pci_device_get_serial_number(struct pci_device *dev, char *sn, int len)
/*skip the header*/ /*skip the header*/
pos += 4; pos += 4;
for (i = 0; i < 2; i++) { for (i = 0; i < 2; i++) {
err = pci_device_cfg_read_u32(dev, err = spdk_pcicfg_read32(dev,
&buf[i], pos + 4 * i); &buf[i], pos + 4 * i);
if (err) if (err)
return -1; return -1;
@ -88,7 +93,7 @@ pci_device_get_serial_number(struct pci_device *dev, char *sn, int len)
/*0 if no other items exist*/ /*0 if no other items exist*/
if (pos < PCI_CFG_SIZE) if (pos < PCI_CFG_SIZE)
return -1; return -1;
err = pci_device_cfg_read_u32(dev, &header, pos); err = spdk_pcicfg_read32(dev, &header, pos);
if (err) if (err)
return -1; return -1;
} }
@ -106,7 +111,8 @@ pci_device_has_non_uio_driver(struct pci_device *dev)
snprintf(linkname, sizeof(linkname), snprintf(linkname, sizeof(linkname),
SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/driver", SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/driver",
dev->domain, dev->bus, dev->dev, dev->func); spdk_pci_device_get_domain(dev), spdk_pci_device_get_bus(dev),
spdk_pci_device_get_dev(dev), spdk_pci_device_get_func(dev));
driver_len = readlink(linkname, driver, sizeof(driver)); driver_len = readlink(linkname, driver, sizeof(driver));
@ -139,10 +145,10 @@ pci_device_has_non_uio_driver(struct pci_device *dev)
int fd; int fd;
memset(&pattern, 0, sizeof(pattern)); memset(&pattern, 0, sizeof(pattern));
pattern.pc_sel.pc_domain = dev->domain; pattern.pc_sel.pc_domain = spdk_pci_device_get_domain(dev);
pattern.pc_sel.pc_bus = dev->bus; pattern.pc_sel.pc_bus = spdk_pci_device_get_bus(dev);
pattern.pc_sel.pc_dev = dev->dev; pattern.pc_sel.pc_dev = spdk_pci_device_get_dev(dev);
pattern.pc_sel.pc_func = dev->func; pattern.pc_sel.pc_func = spdk_pci_device_get_func(dev);
pattern.flags = PCI_GETCONF_MATCH_DOMAIN | pattern.flags = PCI_GETCONF_MATCH_DOMAIN |
PCI_GETCONF_MATCH_BUS | PCI_GETCONF_MATCH_BUS |
PCI_GETCONF_MATCH_DEV | PCI_GETCONF_MATCH_DEV |
@ -192,14 +198,16 @@ pci_device_unbind_kernel_driver(struct pci_device *dev)
snprintf(filename, sizeof(filename), snprintf(filename, sizeof(filename),
SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/driver/unbind", SYSFS_PCI_DEVICES "/" PCI_PRI_FMT "/driver/unbind",
dev->domain, dev->bus, dev->dev, dev->func); spdk_pci_device_get_domain(dev), spdk_pci_device_get_bus(dev),
spdk_pci_device_get_dev(dev), spdk_pci_device_get_func(dev));
fd = fopen(filename, "w"); fd = fopen(filename, "w");
if (!fd) if (!fd)
return 0; return 0;
n = snprintf(buf, sizeof(buf), PCI_PRI_FMT, n = snprintf(buf, sizeof(buf), PCI_PRI_FMT,
dev->domain, dev->bus, dev->dev, dev->func); spdk_pci_device_get_domain(dev), spdk_pci_device_get_bus(dev),
spdk_pci_device_get_dev(dev), spdk_pci_device_get_dev(dev));
if (fwrite(buf, n, 1, fd) == 0) if (fwrite(buf, n, 1, fd) == 0)
goto error; goto error;
@ -259,7 +267,8 @@ pci_device_bind_uio_driver(struct pci_device *dev, char *driver_name)
} }
n = snprintf(buf, sizeof(buf), "%04x %04x", n = snprintf(buf, sizeof(buf), "%04x %04x",
dev->vendor_id, dev->device_id); spdk_pci_device_get_vendor_id(dev),
spdk_pci_device_get_device_id(dev));
if (fwrite(buf, n, 1, fd) == 0) if (fwrite(buf, n, 1, fd) == 0)
goto error; goto error;
@ -273,25 +282,27 @@ error:
} }
int int
pci_device_switch_to_uio_driver(struct pci_device *pci_dev) pci_device_switch_to_uio_driver(struct pci_device *dev)
{ {
if (pci_device_unbind_kernel_driver(pci_dev)) { if (pci_device_unbind_kernel_driver(dev)) {
fprintf(stderr, "Device %s %d:%d:%d unbind from " fprintf(stderr, "Device %d:%d:%d unbind from "
"kernel driver failed\n", "kernel driver failed\n",
pci_device_get_device_name(pci_dev), pci_dev->bus, spdk_pci_device_get_bus(dev),
pci_dev->dev, pci_dev->func); spdk_pci_device_get_dev(dev),
spdk_pci_device_get_func(dev));
return -1; return -1;
} }
if (pci_device_bind_uio_driver(pci_dev, PCI_UIO_DRIVER)) { if (pci_device_bind_uio_driver(dev, PCI_UIO_DRIVER)) {
fprintf(stderr, "Device %s %d:%d:%d bind to " fprintf(stderr, "Device %d:%d:%d bind to "
"uio driver failed\n", "uio driver failed\n",
pci_device_get_device_name(pci_dev), pci_dev->bus, spdk_pci_device_get_bus(dev),
pci_dev->dev, pci_dev->func); spdk_pci_device_get_dev(dev),
spdk_pci_device_get_func(dev));
return -1; return -1;
} }
printf("Device %s %d:%d:%d bind to uio driver success\n", printf("Device %d:%d:%d bind to uio driver success\n",
pci_device_get_device_name(pci_dev), pci_dev->bus, spdk_pci_device_get_bus(dev), spdk_pci_device_get_dev(dev),
pci_dev->dev, pci_dev->func); spdk_pci_device_get_func(dev));
return 0; return 0;
} }
@ -309,8 +320,9 @@ pci_device_claim(struct pci_device *dev)
.l_len = 0, .l_len = 0,
}; };
sprintf(shm_name, PCI_PRI_FMT, dev->domain, dev->bus, sprintf(shm_name, PCI_PRI_FMT, spdk_pci_device_get_domain(dev),
dev->dev, dev->func); spdk_pci_device_get_bus(dev), spdk_pci_device_get_dev(dev),
spdk_pci_device_get_func(dev));
dev_fd = shm_open(shm_name, O_RDWR | O_CREAT, 0600); dev_fd = shm_open(shm_name, O_RDWR | O_CREAT, 0600);
if (dev_fd == -1) { if (dev_fd == -1) {