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03cea61b3a
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.
563 lines
14 KiB
C
563 lines
14 KiB
C
/*-
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* Copyright (c) 2006 IronPort Systems
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/queue.h>
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#include <sys/blist.h>
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#include <sys/conf.h>
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#include <sys/exec.h>
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#include <sys/filedesc.h>
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#include <sys/kernel.h>
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#include <sys/linker.h>
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#include <sys/malloc.h>
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#include <sys/mount.h>
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#include <sys/mutex.h>
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#include <sys/proc.h>
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#include <sys/resourcevar.h>
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#include <sys/sbuf.h>
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#include <sys/smp.h>
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#include <sys/socket.h>
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#include <sys/vnode.h>
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#include <sys/bus.h>
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#include <sys/pciio.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <net/if.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <vm/vm_map.h>
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#include <vm/vm_param.h>
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#include <vm/vm_object.h>
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#include <vm/swap_pager.h>
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#include <machine/bus.h>
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#include <compat/linux/linux_ioctl.h>
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#include <compat/linux/linux_mib.h>
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#include <compat/linux/linux_util.h>
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#include <fs/pseudofs/pseudofs.h>
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struct scsi_host_queue {
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TAILQ_ENTRY(scsi_host_queue) scsi_host_next;
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char *path;
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char *name;
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};
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TAILQ_HEAD(,scsi_host_queue) scsi_host_q;
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static int host_number = 0;
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static int
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atoi(const char *str)
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{
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return (int)strtol(str, (char **)NULL, 10);
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}
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/*
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* Filler function for proc_name
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*/
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static int
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linsysfs_scsiname(PFS_FILL_ARGS)
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{
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struct scsi_host_queue *scsi_host;
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int index;
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if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) {
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index = atoi(&pn->pn_parent->pn_name[4]);
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} else {
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sbuf_printf(sb, "unknown\n");
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return (0);
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}
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TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) {
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if (index-- == 0) {
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sbuf_printf(sb, "%s\n", scsi_host->name);
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return (0);
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}
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}
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sbuf_printf(sb, "unknown\n");
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return (0);
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}
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/*
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* Filler function for device sym-link
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*/
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static int
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linsysfs_link_scsi_host(PFS_FILL_ARGS)
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{
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struct scsi_host_queue *scsi_host;
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int index;
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if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) {
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index = atoi(&pn->pn_parent->pn_name[4]);
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} else {
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sbuf_printf(sb, "unknown\n");
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return (0);
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}
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TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) {
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if (index-- == 0) {
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sbuf_printf(sb, "../../../devices%s", scsi_host->path);
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return(0);
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}
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}
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sbuf_printf(sb, "unknown\n");
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return (0);
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}
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static int
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linsysfs_fill_data(PFS_FILL_ARGS)
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{
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sbuf_printf(sb, "%s", (char *)pn->pn_data);
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return (0);
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}
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static int
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linsysfs_fill_vendor(PFS_FILL_ARGS)
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{
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sbuf_printf(sb, "0x%04x\n", pci_get_vendor((device_t)pn->pn_data));
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return (0);
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}
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static int
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linsysfs_fill_device(PFS_FILL_ARGS)
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{
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sbuf_printf(sb, "0x%04x\n", pci_get_device((device_t)pn->pn_data));
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return (0);
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}
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static int
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linsysfs_fill_subvendor(PFS_FILL_ARGS)
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{
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sbuf_printf(sb, "0x%04x\n", pci_get_subvendor((device_t)pn->pn_data));
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return (0);
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}
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static int
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linsysfs_fill_subdevice(PFS_FILL_ARGS)
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{
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sbuf_printf(sb, "0x%04x\n", pci_get_subdevice((device_t)pn->pn_data));
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return (0);
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}
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static int
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linsysfs_fill_revid(PFS_FILL_ARGS)
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{
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sbuf_printf(sb, "0x%x\n", pci_get_revid((device_t)pn->pn_data));
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return (0);
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}
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static int
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linsysfs_fill_config(PFS_FILL_ARGS)
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{
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uint8_t config[48];
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device_t dev;
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uint32_t reg;
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dev = (device_t)pn->pn_data;
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bzero(config, sizeof(config));
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reg = pci_get_vendor(dev);
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config[0] = reg;
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config[1] = reg >> 8;
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reg = pci_get_device(dev);
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config[2] = reg;
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config[3] = reg >> 8;
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reg = pci_get_revid(dev);
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config[8] = reg;
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reg = pci_get_subvendor(dev);
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config[44] = reg;
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config[45] = reg >> 8;
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reg = pci_get_subdevice(dev);
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config[46] = reg;
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config[47] = reg >> 8;
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sbuf_bcat(sb, config, sizeof(config));
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return (0);
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}
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/*
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* Filler function for PCI uevent file
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*/
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static int
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linsysfs_fill_uevent_pci(PFS_FILL_ARGS)
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{
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device_t dev;
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dev = (device_t)pn->pn_data;
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sbuf_printf(sb, "DRIVER=%s\nPCI_CLASS=%X\nPCI_ID=%04X:%04X\n"
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"PCI_SUBSYS_ID=%04X:%04X\nPCI_SLOT_NAME=%04d:%02x:%02x.%x\n",
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linux_driver_get_name_dev(dev), pci_get_class(dev),
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pci_get_vendor(dev), pci_get_device(dev), pci_get_subvendor(dev),
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pci_get_subdevice(dev), pci_get_domain(dev), pci_get_bus(dev),
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pci_get_slot(dev), pci_get_function(dev));
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return (0);
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}
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/*
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* Filler function for drm uevent file
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*/
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static int
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linsysfs_fill_uevent_drm(PFS_FILL_ARGS)
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{
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device_t dev;
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int unit;
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dev = (device_t)pn->pn_data;
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unit = device_get_unit(dev);
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sbuf_printf(sb,
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"MAJOR=226\nMINOR=%d\nDEVNAME=dri/card%d\nDEVTYPE=dri_minor\n",
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unit, unit);
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return (0);
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}
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static char *
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get_full_pfs_path(struct pfs_node *cur)
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{
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char *temp, *path;
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temp = malloc(MAXPATHLEN, M_TEMP, M_WAITOK);
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path = malloc(MAXPATHLEN, M_TEMP, M_WAITOK);
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path[0] = '\0';
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do {
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snprintf(temp, MAXPATHLEN, "%s/%s", cur->pn_name, path);
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strlcpy(path, temp, MAXPATHLEN);
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cur = cur->pn_parent;
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} while (cur->pn_parent != NULL);
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path[strlen(path) - 1] = '\0'; /* remove extra slash */
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free(temp, M_TEMP);
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return (path);
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}
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/*
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* Filler function for symlink from drm char device to PCI device
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*/
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static int
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linsysfs_fill_vgapci(PFS_FILL_ARGS)
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{
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char *path;
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path = get_full_pfs_path((struct pfs_node*)pn->pn_data);
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sbuf_printf(sb, "../../../%s", path);
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free(path, M_TEMP);
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return (0);
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}
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#define PCI_DEV "pci"
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#define DRMN_DEV "drmn"
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static int
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linsysfs_run_bus(device_t dev, struct pfs_node *dir, struct pfs_node *scsi,
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struct pfs_node *chardev, struct pfs_node *drm, char *path, char *prefix)
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{
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struct scsi_host_queue *scsi_host;
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struct pfs_node *sub_dir, *cur_file;
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int i, nchildren, error;
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device_t *children, parent;
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devclass_t devclass;
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const char *name = NULL;
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struct pci_devinfo *dinfo;
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char *device, *host, *new_path, *devname;
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new_path = path;
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devname = malloc(16, M_TEMP, M_WAITOK);
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parent = device_get_parent(dev);
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if (parent) {
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devclass = device_get_devclass(parent);
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if (devclass != NULL)
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name = devclass_get_name(devclass);
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if (name && strcmp(name, PCI_DEV) == 0) {
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dinfo = device_get_ivars(dev);
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if (dinfo) {
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device = malloc(MAXPATHLEN, M_TEMP, M_WAITOK);
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new_path = malloc(MAXPATHLEN, M_TEMP,
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M_WAITOK);
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new_path[0] = '\000';
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strcpy(new_path, path);
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host = malloc(MAXPATHLEN, M_TEMP, M_WAITOK);
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device[0] = '\000';
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sprintf(device, "%s:%02x:%02x.%x",
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prefix,
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dinfo->cfg.bus,
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dinfo->cfg.slot,
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dinfo->cfg.func);
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strcat(new_path, "/");
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strcat(new_path, device);
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dir = pfs_create_dir(dir, device,
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NULL, NULL, NULL, 0);
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cur_file = pfs_create_file(dir, "vendor",
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&linsysfs_fill_vendor, NULL, NULL, NULL,
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PFS_RD);
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cur_file->pn_data = (void*)dev;
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cur_file = pfs_create_file(dir, "device",
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&linsysfs_fill_device, NULL, NULL, NULL,
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PFS_RD);
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cur_file->pn_data = (void*)dev;
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cur_file = pfs_create_file(dir,
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"subsystem_vendor",
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&linsysfs_fill_subvendor, NULL, NULL, NULL,
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PFS_RD);
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cur_file->pn_data = (void*)dev;
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cur_file = pfs_create_file(dir,
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"subsystem_device",
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&linsysfs_fill_subdevice, NULL, NULL, NULL,
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PFS_RD);
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cur_file->pn_data = (void*)dev;
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cur_file = pfs_create_file(dir, "revision",
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&linsysfs_fill_revid, NULL, NULL, NULL,
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PFS_RD);
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cur_file->pn_data = (void*)dev;
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cur_file = pfs_create_file(dir, "config",
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&linsysfs_fill_config, NULL, NULL, NULL,
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PFS_RD);
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cur_file->pn_data = (void*)dev;
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cur_file = pfs_create_file(dir, "uevent",
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&linsysfs_fill_uevent_pci, NULL, NULL,
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NULL, PFS_RD);
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cur_file->pn_data = (void*)dev;
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cur_file = pfs_create_link(dir, "subsystem",
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&linsysfs_fill_data, NULL, NULL, NULL, 0);
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/* libdrm just checks that the link ends in "/pci" */
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cur_file->pn_data = "/sys/bus/pci";
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if (dinfo->cfg.baseclass == PCIC_STORAGE) {
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/* DJA only make this if needed */
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sprintf(host, "host%d", host_number++);
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strcat(new_path, "/");
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strcat(new_path, host);
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pfs_create_dir(dir, host,
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NULL, NULL, NULL, 0);
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scsi_host = malloc(sizeof(
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struct scsi_host_queue),
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M_DEVBUF, M_NOWAIT);
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scsi_host->path = malloc(
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strlen(new_path) + 1,
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M_DEVBUF, M_NOWAIT);
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scsi_host->path[0] = '\000';
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bcopy(new_path, scsi_host->path,
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strlen(new_path) + 1);
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scsi_host->name = "unknown";
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sub_dir = pfs_create_dir(scsi, host,
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NULL, NULL, NULL, 0);
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pfs_create_link(sub_dir, "device",
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&linsysfs_link_scsi_host,
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NULL, NULL, NULL, 0);
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pfs_create_file(sub_dir, "proc_name",
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&linsysfs_scsiname,
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NULL, NULL, NULL, PFS_RD);
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scsi_host->name
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= linux_driver_get_name_dev(dev);
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TAILQ_INSERT_TAIL(&scsi_host_q,
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scsi_host, scsi_host_next);
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}
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free(device, M_TEMP);
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free(host, M_TEMP);
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}
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}
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devclass = device_get_devclass(dev);
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if (devclass != NULL)
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name = devclass_get_name(devclass);
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else
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name = NULL;
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if (name != NULL && strcmp(name, DRMN_DEV) == 0 &&
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device_get_unit(dev) >= 0) {
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dinfo = device_get_ivars(parent);
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if (dinfo != NULL && dinfo->cfg.baseclass == PCIC_DISPLAY) {
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sprintf(devname, "226:%d",
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device_get_unit(dev));
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sub_dir = pfs_create_dir(chardev,
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devname, NULL, NULL, NULL, 0);
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cur_file = pfs_create_link(sub_dir,
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"device", &linsysfs_fill_vgapci, NULL,
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NULL, NULL, PFS_RD);
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cur_file->pn_data = (void*)dir;
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cur_file = pfs_create_file(sub_dir,
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"uevent", &linsysfs_fill_uevent_drm, NULL,
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NULL, NULL, PFS_RD);
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cur_file->pn_data = (void*)dev;
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sprintf(devname, "card%d",
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device_get_unit(dev));
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sub_dir = pfs_create_dir(drm,
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devname, NULL, NULL, NULL, 0);
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cur_file = pfs_create_link(sub_dir,
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"device", &linsysfs_fill_vgapci, NULL,
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NULL, NULL, PFS_RD);
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cur_file->pn_data = (void*)dir;
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}
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}
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}
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error = device_get_children(dev, &children, &nchildren);
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if (error == 0) {
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for (i = 0; i < nchildren; i++)
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if (children[i])
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linsysfs_run_bus(children[i], dir, scsi,
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chardev, drm, new_path, prefix);
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free(children, M_TEMP);
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}
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if (new_path != path)
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free(new_path, M_TEMP);
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free(devname, M_TEMP);
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return (1);
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}
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/*
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* Filler function for sys/devices/system/cpu/online
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*/
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static int
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linsysfs_cpuonline(PFS_FILL_ARGS)
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{
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sbuf_printf(sb, "%d-%d\n", CPU_FIRST(), mp_maxid);
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return (0);
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}
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/*
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* Filler function for sys/devices/system/cpu/cpuX/online
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*/
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static int
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linsysfs_cpuxonline(PFS_FILL_ARGS)
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{
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sbuf_printf(sb, "1\n");
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return (0);
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}
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static void
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linsysfs_listcpus(struct pfs_node *dir)
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{
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struct pfs_node *cpu;
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char *name;
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int i, count, len;
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len = 1;
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count = mp_maxcpus;
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while (count > 10) {
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count /= 10;
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len++;
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}
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len += sizeof("cpu");
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name = malloc(len, M_TEMP, M_WAITOK);
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for (i = 0; i < mp_ncpus; ++i) {
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/* /sys/devices/system/cpu/cpuX */
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sprintf(name, "cpu%d", i);
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cpu = pfs_create_dir(dir, name, NULL, NULL, NULL, 0);
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pfs_create_file(cpu, "online", &linsysfs_cpuxonline,
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NULL, NULL, NULL, PFS_RD);
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}
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free(name, M_TEMP);
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}
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/*
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* Constructor
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*/
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static int
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linsysfs_init(PFS_INIT_ARGS)
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{
|
|
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;
|
|
devclass_t devclass;
|
|
device_t dev;
|
|
|
|
TAILQ_INIT(&scsi_host_q);
|
|
|
|
root = pi->pi_root;
|
|
|
|
/* /sys/class/... */
|
|
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/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, drm, "/pci0000:00", "0000");
|
|
|
|
/* /sys/devices/system */
|
|
sys = pfs_create_dir(dir, "system", NULL, NULL, NULL, 0);
|
|
|
|
/* /sys/devices/system/cpu */
|
|
cpu = pfs_create_dir(sys, "cpu", NULL, NULL, NULL, 0);
|
|
|
|
pfs_create_file(cpu, "online", &linsysfs_cpuonline,
|
|
NULL, NULL, NULL, PFS_RD);
|
|
|
|
linsysfs_listcpus(cpu);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Destructor
|
|
*/
|
|
static int
|
|
linsysfs_uninit(PFS_INIT_ARGS)
|
|
{
|
|
struct scsi_host_queue *scsi_host, *scsi_host_tmp;
|
|
|
|
TAILQ_FOREACH_SAFE(scsi_host, &scsi_host_q, scsi_host_next,
|
|
scsi_host_tmp) {
|
|
TAILQ_REMOVE(&scsi_host_q, scsi_host, scsi_host_next);
|
|
free(scsi_host->path, M_TEMP);
|
|
free(scsi_host, M_TEMP);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
PSEUDOFS(linsysfs, 1, PR_ALLOW_MOUNT_LINSYSFS);
|
|
#if defined(__amd64__)
|
|
MODULE_DEPEND(linsysfs, linux_common, 1, 1, 1);
|
|
#else
|
|
MODULE_DEPEND(linsysfs, linux, 1, 1, 1);
|
|
#endif
|