static const struct imsm_orom *find_imsm_hba_orom(enum sys_dev_type hba_id)
{
unsigned long align;
if (hba_id >= SYS_DEV_MAX)
return NULL;
/* it's static data so we only need to read it once */
if (populated_orom[hba_id]) {
dprintf("OROM CAP: %p, pid: %d pop: %d\n",
&imsm_orom[hba_id], (int) getpid(), populated_orom[hba_id]);
return &imsm_orom[hba_id];
}
if (check_env("IMSM_TEST_OROM")) {
dprintf("OROM CAP: %p, pid: %d pop: %d\n",
&imsm_orom[hba_id], (int) getpid(), populated_orom[hba_id]);
return imsm_platform_test(hba_id, &populated_orom[hba_id], &imsm_orom[hba_id]);
}
/* return empty OROM capabilities in EFI test mode */
if (check_env("IMSM_TEST_AHCI_EFI") ||
check_env("IMSM_TEST_SCU_EFI"))
return NULL;
if (intel_devices != NULL)
free_sys_dev(&intel_devices);
intel_devices = find_intel_devices();
if (intel_devices == NULL)
return NULL;
/* scan option-rom memory looking for an imsm signature */
if (check_env("IMSM_SAFE_OROM_SCAN"))
align = 2048;
else
align = 512;
if (probe_roms_init(align) != 0)
return NULL;
probe_roms();
/* ignore return value - True is returned if both adapater roms are found */
scan_adapter_roms(scan);
probe_roms_exit();
if (intel_devices != NULL)
free_sys_dev(&intel_devices);
intel_devices = NULL;
if (populated_orom[hba_id])
return &imsm_orom[hba_id];
return NULL;
}
struct sys_dev *find_driver_devices(const char *bus, const char *driver)
{
/* search sysfs for devices driven by 'driver' */
char path[292];
char link[256];
char *c;
DIR *driver_dir;
struct dirent *de;
struct sys_dev *head = NULL;
struct sys_dev *list = NULL;
sprintf(path, "/sys/bus/%s/drivers/%s", bus, driver);
driver_dir = opendir(path);
if (!driver_dir)
return NULL;
for (de = readdir(driver_dir); de; de = readdir(driver_dir)) {
int n;
/* is 'de' a device? check that the 'subsystem' link exists and
* that its target matches 'bus'
*/
sprintf(path, "/sys/bus/%s/drivers/%s/%s/subsystem",
bus, driver, de->d_name);
n = readlink(path, link, sizeof(link));
if (n < 0 || n >= (int)sizeof(link))
continue;
link[n] = '\0';
c = strrchr(link, '/');
if (!c)
continue;
if (strncmp(bus, c+1, strlen(bus)) != 0)
continue;
/* start / add list entry */
if (!head) {
head = malloc(sizeof(*head));
list = head;
} else {
list->next = malloc(sizeof(*head));
list = list->next;
}
if (!list) {
free_sys_dev(&head);
break;
}
/* generate canonical path name for the device */
sprintf(path, "/sys/bus/%s/drivers/%s/%s",
bus, driver, de->d_name);
list->path = canonicalize_file_name(path);
list->next = NULL;
}
closedir(driver_dir);
return head;
}
static int platform_has_intel_ahci(void)
{
struct sys_dev *devices = find_driver_devices("pci", "ahci");
struct sys_dev *dev;
int ret = 0;
for (dev = devices; dev; dev = dev->next)
if (devpath_to_vendor(dev->path) == 0x8086) {
ret = 1;
break;
}
free_sys_dev(&devices);
return ret;
}
struct sys_dev *find_driver_devices(const char *bus, const char *driver)
{
/* search sysfs for devices driven by 'driver' */
char path[292];
char link[256];
char *c;
DIR *driver_dir;
struct dirent *de;
struct sys_dev *head = NULL;
struct sys_dev *list = NULL;
enum sys_dev_type type;
unsigned long long dev_id;
if (strcmp(driver, "isci") == 0)
type = SYS_DEV_SAS;
else if (strcmp(driver, "ahci") == 0)
type = SYS_DEV_SATA;
else
type = SYS_DEV_UNKNOWN;
sprintf(path, "/sys/bus/%s/drivers/%s", bus, driver);
driver_dir = opendir(path);
if (!driver_dir)
return NULL;
for (de = readdir(driver_dir); de; de = readdir(driver_dir)) {
int n;
/* is 'de' a device? check that the 'subsystem' link exists and
* that its target matches 'bus'
*/
sprintf(path, "/sys/bus/%s/drivers/%s/%s/subsystem",
bus, driver, de->d_name);
n = readlink(path, link, sizeof(link));
if (n < 0 || n >= (int)sizeof(link))
continue;
link[n] = '\0';
c = strrchr(link, '/');
if (!c)
continue;
if (strncmp(bus, c+1, strlen(bus)) != 0)
continue;
sprintf(path, "/sys/bus/%s/drivers/%s/%s",
bus, driver, de->d_name);
/* if it's not Intel device skip it. */
if (devpath_to_vendor(path) != 0x8086)
continue;
if (devpath_to_ll(path, "device", &dev_id) != 0)
continue;
/* start / add list entry */
if (!head) {
head = xmalloc(sizeof(*head));
list = head;
} else {
list->next = xmalloc(sizeof(*head));
list = list->next;
}
if (!list) {
free_sys_dev(&head);
break;
}
list->dev_id = (__u16) dev_id;
list->type = type;
list->path = canonicalize_file_name(path);
list->next = NULL;
if ((list->pci_id = strrchr(list->path, '/')) != NULL)
list->pci_id++;
}
closedir(driver_dir);
return head;
}
