Date: Sun, 15 Oct 2017 19:28:14 +0000 (UTC) From: Tijl Coosemans <tijl@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r324637 - head/sys/compat/linsysfs Message-ID: <201710151928.v9FJSEXu077001@repo.freebsd.org>
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Author: tijl Date: Sun Oct 15 19:28:14 2017 New Revision: 324637 URL: https://svnweb.freebsd.org/changeset/base/324637 Log: Add information needed by Linux libdrm 2.4.74 (shipped with CentOS 7.4). Create a config file for PCI devices that exposes their configuration space. Only fields needed by libdrm are filled in (vendor, device, revision, subvendor and subdevice). Link /sys/class/drm/card%d/device to the PCI device directory. Modified: head/sys/compat/linsysfs/linsysfs.c Modified: head/sys/compat/linsysfs/linsysfs.c ============================================================================== --- head/sys/compat/linsysfs/linsysfs.c Sun Oct 15 19:21:15 2017 (r324636) +++ head/sys/compat/linsysfs/linsysfs.c Sun Oct 15 19:28:14 2017 (r324637) @@ -175,6 +175,33 @@ linsysfs_fill_revid(PFS_FILL_ARGS) return (0); } +static int +linsysfs_fill_config(PFS_FILL_ARGS) +{ + uint8_t config[48]; + device_t dev; + uint32_t reg; + + dev = (device_t)pn->pn_data; + bzero(config, sizeof(config)); + reg = pci_get_vendor(dev); + config[0] = reg; + config[1] = reg >> 8; + reg = pci_get_device(dev); + config[2] = reg; + config[3] = reg >> 8; + reg = pci_get_revid(dev); + config[8] = reg; + reg = pci_get_subvendor(dev); + config[44] = reg; + config[45] = reg >> 8; + reg = pci_get_subdevice(dev); + config[46] = reg; + config[47] = reg >> 8; + sbuf_bcat(sb, config, sizeof(config)); + return (0); +} + /* * Filler function for PCI uevent file */ @@ -247,20 +274,20 @@ linsysfs_fill_vgapci(PFS_FILL_ARGS) #define PCI_DEV "pci" #define DRMN_DEV "drmn" static int -linsysfs_run_bus(device_t dev, struct pfs_node *dir, struct pfs_node *scsi, struct pfs_node *chardev, - char *path, char *prefix) +linsysfs_run_bus(device_t dev, struct pfs_node *dir, struct pfs_node *scsi, + struct pfs_node *chardev, struct pfs_node *drm, char *path, char *prefix) { struct scsi_host_queue *scsi_host; - struct pfs_node *sub_dir, *cur_file, *cur_chardev; + struct pfs_node *sub_dir, *cur_file; int i, nchildren, error; device_t *children, parent; devclass_t devclass; const char *name = NULL; struct pci_devinfo *dinfo; - char *device, *host, *new_path, *chardevname; + char *device, *host, *new_path, *devname; new_path = path; - chardevname = malloc(16, M_TEMP, M_WAITOK); + devname = malloc(16, M_TEMP, M_WAITOK); parent = device_get_parent(dev); if (parent) { @@ -308,6 +335,10 @@ linsysfs_run_bus(device_t dev, struct pfs_node *dir, s &linsysfs_fill_revid, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dev; + cur_file = pfs_create_file(dir, "config", + &linsysfs_fill_config, NULL, NULL, NULL, + PFS_RD); + cur_file->pn_data = (void*)dev; cur_file = pfs_create_file(dir, "uevent", &linsysfs_fill_uevent_pci, NULL, NULL, NULL, PFS_RD); @@ -362,18 +393,26 @@ linsysfs_run_bus(device_t dev, struct pfs_node *dir, s device_get_unit(dev) >= 0) { dinfo = device_get_ivars(parent); if (dinfo != NULL && dinfo->cfg.baseclass == PCIC_DISPLAY) { - sprintf(chardevname, "226:%d", + sprintf(devname, "226:%d", device_get_unit(dev)); - cur_chardev = pfs_create_dir(chardev, - chardevname, NULL, NULL, NULL, 0); - cur_file = pfs_create_link(cur_chardev, + sub_dir = pfs_create_dir(chardev, + devname, NULL, NULL, NULL, 0); + cur_file = pfs_create_link(sub_dir, "device", &linsysfs_fill_vgapci, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dir; - cur_file = pfs_create_file(cur_chardev, + cur_file = pfs_create_file(sub_dir, "uevent", &linsysfs_fill_uevent_drm, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dev; + sprintf(devname, "card%d", + device_get_unit(dev)); + sub_dir = pfs_create_dir(drm, + devname, NULL, NULL, NULL, 0); + cur_file = pfs_create_link(sub_dir, + "device", &linsysfs_fill_vgapci, NULL, + NULL, NULL, PFS_RD); + cur_file->pn_data = (void*)dir; } } } @@ -383,12 +422,12 @@ linsysfs_run_bus(device_t dev, struct pfs_node *dir, s for (i = 0; i < nchildren; i++) if (children[i]) linsysfs_run_bus(children[i], dir, scsi, - chardev, new_path, prefix); + chardev, drm, new_path, prefix); free(children, M_TEMP); } if (new_path != path) free(new_path, M_TEMP); - free(chardevname, M_TEMP); + free(devname, M_TEMP); return (1); } @@ -449,7 +488,9 @@ static int linsysfs_init(PFS_INIT_ARGS) { struct pfs_node *root; + struct pfs_node *class; struct pfs_node *dir, *sys, *cpu; + struct pfs_node *drm; struct pfs_node *pci; struct pfs_node *scsi; struct pfs_node *devdir, *chardev; @@ -461,26 +502,25 @@ linsysfs_init(PFS_INIT_ARGS) root = pi->pi_root; /* /sys/class/... */ - scsi = pfs_create_dir(root, "class", NULL, NULL, NULL, 0); - scsi = pfs_create_dir(scsi, "scsi_host", NULL, NULL, NULL, 0); + class = pfs_create_dir(root, "class", NULL, NULL, NULL, 0); + scsi = pfs_create_dir(class, "scsi_host", NULL, NULL, NULL, 0); + drm = pfs_create_dir(class, "drm", NULL, NULL, NULL, 0); - /* /sys/devices */ - dir = pfs_create_dir(root, "devices", NULL, NULL, NULL, 0); - - /* /sys/devices/pci0000:00 */ - pci = pfs_create_dir(dir, "pci0000:00", NULL, NULL, NULL, 0); - - /* /sys/dev/char */ + /* /sys/dev/... */ devdir = pfs_create_dir(root, "dev", NULL, NULL, NULL, 0); chardev = pfs_create_dir(devdir, "char", NULL, NULL, NULL, 0); + /* /sys/devices/... */ + dir = pfs_create_dir(root, "devices", NULL, NULL, NULL, 0); + pci = pfs_create_dir(dir, "pci0000:00", NULL, NULL, NULL, 0); + devclass = devclass_find("root"); if (devclass == NULL) { return (0); } dev = devclass_get_device(devclass, 0); - linsysfs_run_bus(dev, pci, scsi, chardev, "/pci0000:00", "0000"); + linsysfs_run_bus(dev, pci, scsi, chardev, drm, "/pci0000:00", "0000"); /* /sys/devices/system */ sys = pfs_create_dir(dir, "system", NULL, NULL, NULL, 0);
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