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62 |
marcus.erl |
/*
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2 |
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* Node information (ConfigROM) collection and management.
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3 |
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*
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* Copyright (C) 2000 Andreas E. Bombe
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* 2001-2003 Ben Collins <bcollins@debian.net>
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*
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* This code is licensed under the GPL. See the file COPYING in the root
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* directory of the kernel sources for details.
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*/
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#include <linux/bitmap.h>
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/kthread.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/mutex.h>
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#include <linux/freezer.h>
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#include <asm/atomic.h>
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#include <asm/semaphore.h>
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23 |
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#include "csr.h"
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25 |
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#include "highlevel.h"
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26 |
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#include "hosts.h"
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#include "ieee1394.h"
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#include "ieee1394_core.h"
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#include "ieee1394_hotplug.h"
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30 |
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#include "ieee1394_types.h"
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#include "ieee1394_transactions.h"
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32 |
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#include "nodemgr.h"
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33 |
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34 |
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static int ignore_drivers;
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module_param(ignore_drivers, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(ignore_drivers, "Disable automatic probing for drivers.");
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struct nodemgr_csr_info {
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struct hpsb_host *host;
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40 |
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nodeid_t nodeid;
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41 |
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unsigned int generation;
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42 |
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unsigned int speed_unverified:1;
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};
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/*
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* Correct the speed map entry. This is necessary
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* - for nodes with link speed < phy speed,
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* - for 1394b nodes with negotiated phy port speed < IEEE1394_SPEED_MAX.
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* A possible speed is determined by trial and error, using quadlet reads.
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*/
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static int nodemgr_check_speed(struct nodemgr_csr_info *ci, u64 addr,
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quadlet_t *buffer)
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{
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quadlet_t q;
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u8 i, *speed, old_speed, good_speed;
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int error;
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speed = &(ci->host->speed[NODEID_TO_NODE(ci->nodeid)]);
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old_speed = *speed;
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good_speed = IEEE1394_SPEED_MAX + 1;
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/* Try every speed from S100 to old_speed.
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* If we did it the other way around, a too low speed could be caught
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* if the retry succeeded for some other reason, e.g. because the link
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* just finished its initialization. */
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for (i = IEEE1394_SPEED_100; i <= old_speed; i++) {
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*speed = i;
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error = hpsb_read(ci->host, ci->nodeid, ci->generation, addr,
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&q, sizeof(quadlet_t));
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if (error)
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break;
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*buffer = q;
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good_speed = i;
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}
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if (good_speed <= IEEE1394_SPEED_MAX) {
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HPSB_DEBUG("Speed probe of node " NODE_BUS_FMT " yields %s",
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NODE_BUS_ARGS(ci->host, ci->nodeid),
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hpsb_speedto_str[good_speed]);
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*speed = good_speed;
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ci->speed_unverified = 0;
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return 0;
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}
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*speed = old_speed;
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return error;
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}
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static int nodemgr_bus_read(struct csr1212_csr *csr, u64 addr, u16 length,
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void *buffer, void *__ci)
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{
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struct nodemgr_csr_info *ci = (struct nodemgr_csr_info*)__ci;
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int i, error;
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for (i = 1; ; i++) {
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error = hpsb_read(ci->host, ci->nodeid, ci->generation, addr,
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buffer, length);
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if (!error) {
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ci->speed_unverified = 0;
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break;
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}
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/* Give up after 3rd failure. */
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if (i == 3)
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break;
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/* The ieee1394_core guessed the node's speed capability from
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* the self ID. Check whether a lower speed works. */
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if (ci->speed_unverified && length == sizeof(quadlet_t)) {
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error = nodemgr_check_speed(ci, addr, buffer);
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if (!error)
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break;
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111 |
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}
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if (msleep_interruptible(334))
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return -EINTR;
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}
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return error;
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}
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static int nodemgr_get_max_rom(quadlet_t *bus_info_data, void *__ci)
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{
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return (be32_to_cpu(bus_info_data[2]) >> 8) & 0x3;
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}
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static struct csr1212_bus_ops nodemgr_csr_ops = {
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.bus_read = nodemgr_bus_read,
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.get_max_rom = nodemgr_get_max_rom
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};
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/*
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* Basically what we do here is start off retrieving the bus_info block.
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* From there will fill in some info about the node, verify it is of IEEE
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* 1394 type, and that the crc checks out ok. After that we start off with
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* the root directory, and subdirectories. To do this, we retrieve the
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* quadlet header for a directory, find out the length, and retrieve the
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* complete directory entry (be it a leaf or a directory). We then process
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* it and add the info to our structure for that particular node.
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*
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* We verify CRC's along the way for each directory/block/leaf. The entire
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* node structure is generic, and simply stores the information in a way
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* that's easy to parse by the protocol interface.
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*/
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/*
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* The nodemgr relies heavily on the Driver Model for device callbacks and
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* driver/device mappings. The old nodemgr used to handle all this itself,
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* but now we are much simpler because of the LDM.
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*/
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struct host_info {
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struct hpsb_host *host;
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struct list_head list;
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struct task_struct *thread;
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};
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static int nodemgr_bus_match(struct device * dev, struct device_driver * drv);
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static int nodemgr_uevent(struct device *dev, struct kobj_uevent_env *env);
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static void nodemgr_resume_ne(struct node_entry *ne);
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static void nodemgr_remove_ne(struct node_entry *ne);
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static struct node_entry *find_entry_by_guid(u64 guid);
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struct bus_type ieee1394_bus_type = {
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.name = "ieee1394",
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.match = nodemgr_bus_match,
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};
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static void host_cls_release(struct device *dev)
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{
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put_device(&container_of((dev), struct hpsb_host, host_dev)->device);
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}
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struct class hpsb_host_class = {
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.name = "ieee1394_host",
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.dev_release = host_cls_release,
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};
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static void ne_cls_release(struct device *dev)
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{
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put_device(&container_of((dev), struct node_entry, node_dev)->device);
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}
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static struct class nodemgr_ne_class = {
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.name = "ieee1394_node",
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.dev_release = ne_cls_release,
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};
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static void ud_cls_release(struct device *dev)
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{
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put_device(&container_of((dev), struct unit_directory, unit_dev)->device);
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}
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/* The name here is only so that unit directory hotplug works with old
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* style hotplug, which only ever did unit directories anyway.
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*/
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static struct class nodemgr_ud_class = {
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.name = "ieee1394",
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.dev_release = ud_cls_release,
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.dev_uevent = nodemgr_uevent,
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};
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static struct hpsb_highlevel nodemgr_highlevel;
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static void nodemgr_release_ud(struct device *dev)
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{
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struct unit_directory *ud = container_of(dev, struct unit_directory, device);
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if (ud->vendor_name_kv)
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csr1212_release_keyval(ud->vendor_name_kv);
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if (ud->model_name_kv)
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csr1212_release_keyval(ud->model_name_kv);
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212 |
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kfree(ud);
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}
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214 |
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215 |
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static void nodemgr_release_ne(struct device *dev)
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216 |
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{
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217 |
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struct node_entry *ne = container_of(dev, struct node_entry, device);
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218 |
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219 |
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if (ne->vendor_name_kv)
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220 |
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csr1212_release_keyval(ne->vendor_name_kv);
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221 |
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222 |
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kfree(ne);
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}
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224 |
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225 |
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226 |
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static void nodemgr_release_host(struct device *dev)
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{
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228 |
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struct hpsb_host *host = container_of(dev, struct hpsb_host, device);
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229 |
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230 |
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csr1212_destroy_csr(host->csr.rom);
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232 |
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kfree(host);
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}
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235 |
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static int nodemgr_ud_platform_data;
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237 |
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static struct device nodemgr_dev_template_ud = {
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.bus = &ieee1394_bus_type,
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.release = nodemgr_release_ud,
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.platform_data = &nodemgr_ud_platform_data,
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};
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242 |
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243 |
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static struct device nodemgr_dev_template_ne = {
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.bus = &ieee1394_bus_type,
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.release = nodemgr_release_ne,
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};
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247 |
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248 |
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/* This dummy driver prevents the host devices from being scanned. We have no
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* useful drivers for them yet, and there would be a deadlock possible if the
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250 |
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* driver core scans the host device while the host's low-level driver (i.e.
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251 |
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* the host's parent device) is being removed. */
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252 |
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static struct device_driver nodemgr_mid_layer_driver = {
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.bus = &ieee1394_bus_type,
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254 |
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.name = "nodemgr",
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255 |
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.owner = THIS_MODULE,
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256 |
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};
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257 |
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258 |
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struct device nodemgr_dev_template_host = {
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259 |
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.bus = &ieee1394_bus_type,
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260 |
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.release = nodemgr_release_host,
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261 |
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};
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262 |
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263 |
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264 |
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#define fw_attr(class, class_type, field, type, format_string) \
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static ssize_t fw_show_##class##_##field (struct device *dev, struct device_attribute *attr, char *buf)\
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266 |
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{ \
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267 |
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class_type *class; \
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268 |
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class = container_of(dev, class_type, device); \
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269 |
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return sprintf(buf, format_string, (type)class->field); \
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270 |
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} \
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271 |
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static struct device_attribute dev_attr_##class##_##field = { \
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272 |
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.attr = {.name = __stringify(field), .mode = S_IRUGO }, \
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273 |
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.show = fw_show_##class##_##field, \
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274 |
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};
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275 |
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276 |
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#define fw_attr_td(class, class_type, td_kv) \
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277 |
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static ssize_t fw_show_##class##_##td_kv (struct device *dev, struct device_attribute *attr, char *buf)\
|
278 |
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{ \
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279 |
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int len; \
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280 |
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class_type *class = container_of(dev, class_type, device); \
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281 |
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len = (class->td_kv->value.leaf.len - 2) * sizeof(quadlet_t); \
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282 |
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memcpy(buf, \
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283 |
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CSR1212_TEXTUAL_DESCRIPTOR_LEAF_DATA(class->td_kv), \
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284 |
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len); \
|
285 |
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while (buf[len - 1] == '\0') \
|
286 |
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len--; \
|
287 |
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buf[len++] = '\n'; \
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288 |
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buf[len] = '\0'; \
|
289 |
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return len; \
|
290 |
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} \
|
291 |
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static struct device_attribute dev_attr_##class##_##td_kv = { \
|
292 |
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.attr = {.name = __stringify(td_kv), .mode = S_IRUGO }, \
|
293 |
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.show = fw_show_##class##_##td_kv, \
|
294 |
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};
|
295 |
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|
296 |
|
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|
297 |
|
|
#define fw_drv_attr(field, type, format_string) \
|
298 |
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static ssize_t fw_drv_show_##field (struct device_driver *drv, char *buf) \
|
299 |
|
|
{ \
|
300 |
|
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struct hpsb_protocol_driver *driver; \
|
301 |
|
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driver = container_of(drv, struct hpsb_protocol_driver, driver); \
|
302 |
|
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return sprintf(buf, format_string, (type)driver->field);\
|
303 |
|
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} \
|
304 |
|
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static struct driver_attribute driver_attr_drv_##field = { \
|
305 |
|
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.attr = {.name = __stringify(field), .mode = S_IRUGO }, \
|
306 |
|
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.show = fw_drv_show_##field, \
|
307 |
|
|
};
|
308 |
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|
309 |
|
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|
310 |
|
|
static ssize_t fw_show_ne_bus_options(struct device *dev, struct device_attribute *attr, char *buf)
|
311 |
|
|
{
|
312 |
|
|
struct node_entry *ne = container_of(dev, struct node_entry, device);
|
313 |
|
|
|
314 |
|
|
return sprintf(buf, "IRMC(%d) CMC(%d) ISC(%d) BMC(%d) PMC(%d) GEN(%d) "
|
315 |
|
|
"LSPD(%d) MAX_REC(%d) MAX_ROM(%d) CYC_CLK_ACC(%d)\n",
|
316 |
|
|
ne->busopt.irmc,
|
317 |
|
|
ne->busopt.cmc, ne->busopt.isc, ne->busopt.bmc,
|
318 |
|
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ne->busopt.pmc, ne->busopt.generation, ne->busopt.lnkspd,
|
319 |
|
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ne->busopt.max_rec,
|
320 |
|
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ne->busopt.max_rom,
|
321 |
|
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ne->busopt.cyc_clk_acc);
|
322 |
|
|
}
|
323 |
|
|
static DEVICE_ATTR(bus_options,S_IRUGO,fw_show_ne_bus_options,NULL);
|
324 |
|
|
|
325 |
|
|
|
326 |
|
|
#ifdef HPSB_DEBUG_TLABELS
|
327 |
|
|
static ssize_t fw_show_ne_tlabels_free(struct device *dev,
|
328 |
|
|
struct device_attribute *attr, char *buf)
|
329 |
|
|
{
|
330 |
|
|
struct node_entry *ne = container_of(dev, struct node_entry, device);
|
331 |
|
|
unsigned long flags;
|
332 |
|
|
unsigned long *tp = ne->host->tl_pool[NODEID_TO_NODE(ne->nodeid)].map;
|
333 |
|
|
int tf;
|
334 |
|
|
|
335 |
|
|
spin_lock_irqsave(&hpsb_tlabel_lock, flags);
|
336 |
|
|
tf = 64 - bitmap_weight(tp, 64);
|
337 |
|
|
spin_unlock_irqrestore(&hpsb_tlabel_lock, flags);
|
338 |
|
|
|
339 |
|
|
return sprintf(buf, "%d\n", tf);
|
340 |
|
|
}
|
341 |
|
|
static DEVICE_ATTR(tlabels_free,S_IRUGO,fw_show_ne_tlabels_free,NULL);
|
342 |
|
|
|
343 |
|
|
|
344 |
|
|
static ssize_t fw_show_ne_tlabels_mask(struct device *dev,
|
345 |
|
|
struct device_attribute *attr, char *buf)
|
346 |
|
|
{
|
347 |
|
|
struct node_entry *ne = container_of(dev, struct node_entry, device);
|
348 |
|
|
unsigned long flags;
|
349 |
|
|
unsigned long *tp = ne->host->tl_pool[NODEID_TO_NODE(ne->nodeid)].map;
|
350 |
|
|
u64 tm;
|
351 |
|
|
|
352 |
|
|
spin_lock_irqsave(&hpsb_tlabel_lock, flags);
|
353 |
|
|
#if (BITS_PER_LONG <= 32)
|
354 |
|
|
tm = ((u64)tp[0] << 32) + tp[1];
|
355 |
|
|
#else
|
356 |
|
|
tm = tp[0];
|
357 |
|
|
#endif
|
358 |
|
|
spin_unlock_irqrestore(&hpsb_tlabel_lock, flags);
|
359 |
|
|
|
360 |
|
|
return sprintf(buf, "0x%016llx\n", (unsigned long long)tm);
|
361 |
|
|
}
|
362 |
|
|
static DEVICE_ATTR(tlabels_mask, S_IRUGO, fw_show_ne_tlabels_mask, NULL);
|
363 |
|
|
#endif /* HPSB_DEBUG_TLABELS */
|
364 |
|
|
|
365 |
|
|
|
366 |
|
|
static ssize_t fw_set_ignore_driver(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
|
367 |
|
|
{
|
368 |
|
|
struct unit_directory *ud = container_of(dev, struct unit_directory, device);
|
369 |
|
|
int state = simple_strtoul(buf, NULL, 10);
|
370 |
|
|
|
371 |
|
|
if (state == 1) {
|
372 |
|
|
ud->ignore_driver = 1;
|
373 |
|
|
device_release_driver(dev);
|
374 |
|
|
} else if (state == 0)
|
375 |
|
|
ud->ignore_driver = 0;
|
376 |
|
|
|
377 |
|
|
return count;
|
378 |
|
|
}
|
379 |
|
|
static ssize_t fw_get_ignore_driver(struct device *dev, struct device_attribute *attr, char *buf)
|
380 |
|
|
{
|
381 |
|
|
struct unit_directory *ud = container_of(dev, struct unit_directory, device);
|
382 |
|
|
|
383 |
|
|
return sprintf(buf, "%d\n", ud->ignore_driver);
|
384 |
|
|
}
|
385 |
|
|
static DEVICE_ATTR(ignore_driver, S_IWUSR | S_IRUGO, fw_get_ignore_driver, fw_set_ignore_driver);
|
386 |
|
|
|
387 |
|
|
|
388 |
|
|
static ssize_t fw_set_destroy_node(struct bus_type *bus, const char *buf, size_t count)
|
389 |
|
|
{
|
390 |
|
|
struct node_entry *ne;
|
391 |
|
|
u64 guid = (u64)simple_strtoull(buf, NULL, 16);
|
392 |
|
|
|
393 |
|
|
ne = find_entry_by_guid(guid);
|
394 |
|
|
|
395 |
|
|
if (ne == NULL || !ne->in_limbo)
|
396 |
|
|
return -EINVAL;
|
397 |
|
|
|
398 |
|
|
nodemgr_remove_ne(ne);
|
399 |
|
|
|
400 |
|
|
return count;
|
401 |
|
|
}
|
402 |
|
|
static ssize_t fw_get_destroy_node(struct bus_type *bus, char *buf)
|
403 |
|
|
{
|
404 |
|
|
return sprintf(buf, "You can destroy in_limbo nodes by writing their GUID to this file\n");
|
405 |
|
|
}
|
406 |
|
|
static BUS_ATTR(destroy_node, S_IWUSR | S_IRUGO, fw_get_destroy_node, fw_set_destroy_node);
|
407 |
|
|
|
408 |
|
|
|
409 |
|
|
static ssize_t fw_set_rescan(struct bus_type *bus, const char *buf,
|
410 |
|
|
size_t count)
|
411 |
|
|
{
|
412 |
|
|
int error = 0;
|
413 |
|
|
|
414 |
|
|
if (simple_strtoul(buf, NULL, 10) == 1)
|
415 |
|
|
error = bus_rescan_devices(&ieee1394_bus_type);
|
416 |
|
|
return error ? error : count;
|
417 |
|
|
}
|
418 |
|
|
static ssize_t fw_get_rescan(struct bus_type *bus, char *buf)
|
419 |
|
|
{
|
420 |
|
|
return sprintf(buf, "You can force a rescan of the bus for "
|
421 |
|
|
"drivers by writing a 1 to this file\n");
|
422 |
|
|
}
|
423 |
|
|
static BUS_ATTR(rescan, S_IWUSR | S_IRUGO, fw_get_rescan, fw_set_rescan);
|
424 |
|
|
|
425 |
|
|
|
426 |
|
|
static ssize_t fw_set_ignore_drivers(struct bus_type *bus, const char *buf, size_t count)
|
427 |
|
|
{
|
428 |
|
|
int state = simple_strtoul(buf, NULL, 10);
|
429 |
|
|
|
430 |
|
|
if (state == 1)
|
431 |
|
|
ignore_drivers = 1;
|
432 |
|
|
else if (state == 0)
|
433 |
|
|
ignore_drivers = 0;
|
434 |
|
|
|
435 |
|
|
return count;
|
436 |
|
|
}
|
437 |
|
|
static ssize_t fw_get_ignore_drivers(struct bus_type *bus, char *buf)
|
438 |
|
|
{
|
439 |
|
|
return sprintf(buf, "%d\n", ignore_drivers);
|
440 |
|
|
}
|
441 |
|
|
static BUS_ATTR(ignore_drivers, S_IWUSR | S_IRUGO, fw_get_ignore_drivers, fw_set_ignore_drivers);
|
442 |
|
|
|
443 |
|
|
|
444 |
|
|
struct bus_attribute *const fw_bus_attrs[] = {
|
445 |
|
|
&bus_attr_destroy_node,
|
446 |
|
|
&bus_attr_rescan,
|
447 |
|
|
&bus_attr_ignore_drivers,
|
448 |
|
|
NULL
|
449 |
|
|
};
|
450 |
|
|
|
451 |
|
|
|
452 |
|
|
fw_attr(ne, struct node_entry, capabilities, unsigned int, "0x%06x\n")
|
453 |
|
|
fw_attr(ne, struct node_entry, nodeid, unsigned int, "0x%04x\n")
|
454 |
|
|
|
455 |
|
|
fw_attr(ne, struct node_entry, vendor_id, unsigned int, "0x%06x\n")
|
456 |
|
|
fw_attr_td(ne, struct node_entry, vendor_name_kv)
|
457 |
|
|
|
458 |
|
|
fw_attr(ne, struct node_entry, guid, unsigned long long, "0x%016Lx\n")
|
459 |
|
|
fw_attr(ne, struct node_entry, guid_vendor_id, unsigned int, "0x%06x\n")
|
460 |
|
|
fw_attr(ne, struct node_entry, in_limbo, int, "%d\n");
|
461 |
|
|
|
462 |
|
|
static struct device_attribute *const fw_ne_attrs[] = {
|
463 |
|
|
&dev_attr_ne_guid,
|
464 |
|
|
&dev_attr_ne_guid_vendor_id,
|
465 |
|
|
&dev_attr_ne_capabilities,
|
466 |
|
|
&dev_attr_ne_vendor_id,
|
467 |
|
|
&dev_attr_ne_nodeid,
|
468 |
|
|
&dev_attr_bus_options,
|
469 |
|
|
#ifdef HPSB_DEBUG_TLABELS
|
470 |
|
|
&dev_attr_tlabels_free,
|
471 |
|
|
&dev_attr_tlabels_mask,
|
472 |
|
|
#endif
|
473 |
|
|
};
|
474 |
|
|
|
475 |
|
|
|
476 |
|
|
|
477 |
|
|
fw_attr(ud, struct unit_directory, address, unsigned long long, "0x%016Lx\n")
|
478 |
|
|
fw_attr(ud, struct unit_directory, length, int, "%d\n")
|
479 |
|
|
/* These are all dependent on the value being provided */
|
480 |
|
|
fw_attr(ud, struct unit_directory, vendor_id, unsigned int, "0x%06x\n")
|
481 |
|
|
fw_attr(ud, struct unit_directory, model_id, unsigned int, "0x%06x\n")
|
482 |
|
|
fw_attr(ud, struct unit_directory, specifier_id, unsigned int, "0x%06x\n")
|
483 |
|
|
fw_attr(ud, struct unit_directory, version, unsigned int, "0x%06x\n")
|
484 |
|
|
fw_attr_td(ud, struct unit_directory, vendor_name_kv)
|
485 |
|
|
fw_attr_td(ud, struct unit_directory, model_name_kv)
|
486 |
|
|
|
487 |
|
|
static struct device_attribute *const fw_ud_attrs[] = {
|
488 |
|
|
&dev_attr_ud_address,
|
489 |
|
|
&dev_attr_ud_length,
|
490 |
|
|
&dev_attr_ignore_driver,
|
491 |
|
|
};
|
492 |
|
|
|
493 |
|
|
|
494 |
|
|
fw_attr(host, struct hpsb_host, node_count, int, "%d\n")
|
495 |
|
|
fw_attr(host, struct hpsb_host, selfid_count, int, "%d\n")
|
496 |
|
|
fw_attr(host, struct hpsb_host, nodes_active, int, "%d\n")
|
497 |
|
|
fw_attr(host, struct hpsb_host, in_bus_reset, int, "%d\n")
|
498 |
|
|
fw_attr(host, struct hpsb_host, is_root, int, "%d\n")
|
499 |
|
|
fw_attr(host, struct hpsb_host, is_cycmst, int, "%d\n")
|
500 |
|
|
fw_attr(host, struct hpsb_host, is_irm, int, "%d\n")
|
501 |
|
|
fw_attr(host, struct hpsb_host, is_busmgr, int, "%d\n")
|
502 |
|
|
|
503 |
|
|
static struct device_attribute *const fw_host_attrs[] = {
|
504 |
|
|
&dev_attr_host_node_count,
|
505 |
|
|
&dev_attr_host_selfid_count,
|
506 |
|
|
&dev_attr_host_nodes_active,
|
507 |
|
|
&dev_attr_host_in_bus_reset,
|
508 |
|
|
&dev_attr_host_is_root,
|
509 |
|
|
&dev_attr_host_is_cycmst,
|
510 |
|
|
&dev_attr_host_is_irm,
|
511 |
|
|
&dev_attr_host_is_busmgr,
|
512 |
|
|
};
|
513 |
|
|
|
514 |
|
|
|
515 |
|
|
static ssize_t fw_show_drv_device_ids(struct device_driver *drv, char *buf)
|
516 |
|
|
{
|
517 |
|
|
struct hpsb_protocol_driver *driver;
|
518 |
|
|
struct ieee1394_device_id *id;
|
519 |
|
|
int length = 0;
|
520 |
|
|
char *scratch = buf;
|
521 |
|
|
|
522 |
|
|
driver = container_of(drv, struct hpsb_protocol_driver, driver);
|
523 |
|
|
|
524 |
|
|
for (id = driver->id_table; id->match_flags != 0; id++) {
|
525 |
|
|
int need_coma = 0;
|
526 |
|
|
|
527 |
|
|
if (id->match_flags & IEEE1394_MATCH_VENDOR_ID) {
|
528 |
|
|
length += sprintf(scratch, "vendor_id=0x%06x", id->vendor_id);
|
529 |
|
|
scratch = buf + length;
|
530 |
|
|
need_coma++;
|
531 |
|
|
}
|
532 |
|
|
|
533 |
|
|
if (id->match_flags & IEEE1394_MATCH_MODEL_ID) {
|
534 |
|
|
length += sprintf(scratch, "%smodel_id=0x%06x",
|
535 |
|
|
need_coma++ ? "," : "",
|
536 |
|
|
id->model_id);
|
537 |
|
|
scratch = buf + length;
|
538 |
|
|
}
|
539 |
|
|
|
540 |
|
|
if (id->match_flags & IEEE1394_MATCH_SPECIFIER_ID) {
|
541 |
|
|
length += sprintf(scratch, "%sspecifier_id=0x%06x",
|
542 |
|
|
need_coma++ ? "," : "",
|
543 |
|
|
id->specifier_id);
|
544 |
|
|
scratch = buf + length;
|
545 |
|
|
}
|
546 |
|
|
|
547 |
|
|
if (id->match_flags & IEEE1394_MATCH_VERSION) {
|
548 |
|
|
length += sprintf(scratch, "%sversion=0x%06x",
|
549 |
|
|
need_coma++ ? "," : "",
|
550 |
|
|
id->version);
|
551 |
|
|
scratch = buf + length;
|
552 |
|
|
}
|
553 |
|
|
|
554 |
|
|
if (need_coma) {
|
555 |
|
|
*scratch++ = '\n';
|
556 |
|
|
length++;
|
557 |
|
|
}
|
558 |
|
|
}
|
559 |
|
|
|
560 |
|
|
return length;
|
561 |
|
|
}
|
562 |
|
|
static DRIVER_ATTR(device_ids,S_IRUGO,fw_show_drv_device_ids,NULL);
|
563 |
|
|
|
564 |
|
|
|
565 |
|
|
fw_drv_attr(name, const char *, "%s\n")
|
566 |
|
|
|
567 |
|
|
static struct driver_attribute *const fw_drv_attrs[] = {
|
568 |
|
|
&driver_attr_drv_name,
|
569 |
|
|
&driver_attr_device_ids,
|
570 |
|
|
};
|
571 |
|
|
|
572 |
|
|
|
573 |
|
|
static void nodemgr_create_drv_files(struct hpsb_protocol_driver *driver)
|
574 |
|
|
{
|
575 |
|
|
struct device_driver *drv = &driver->driver;
|
576 |
|
|
int i;
|
577 |
|
|
|
578 |
|
|
for (i = 0; i < ARRAY_SIZE(fw_drv_attrs); i++)
|
579 |
|
|
if (driver_create_file(drv, fw_drv_attrs[i]))
|
580 |
|
|
goto fail;
|
581 |
|
|
return;
|
582 |
|
|
fail:
|
583 |
|
|
HPSB_ERR("Failed to add sysfs attribute");
|
584 |
|
|
}
|
585 |
|
|
|
586 |
|
|
|
587 |
|
|
static void nodemgr_remove_drv_files(struct hpsb_protocol_driver *driver)
|
588 |
|
|
{
|
589 |
|
|
struct device_driver *drv = &driver->driver;
|
590 |
|
|
int i;
|
591 |
|
|
|
592 |
|
|
for (i = 0; i < ARRAY_SIZE(fw_drv_attrs); i++)
|
593 |
|
|
driver_remove_file(drv, fw_drv_attrs[i]);
|
594 |
|
|
}
|
595 |
|
|
|
596 |
|
|
|
597 |
|
|
static void nodemgr_create_ne_dev_files(struct node_entry *ne)
|
598 |
|
|
{
|
599 |
|
|
struct device *dev = &ne->device;
|
600 |
|
|
int i;
|
601 |
|
|
|
602 |
|
|
for (i = 0; i < ARRAY_SIZE(fw_ne_attrs); i++)
|
603 |
|
|
if (device_create_file(dev, fw_ne_attrs[i]))
|
604 |
|
|
goto fail;
|
605 |
|
|
return;
|
606 |
|
|
fail:
|
607 |
|
|
HPSB_ERR("Failed to add sysfs attribute");
|
608 |
|
|
}
|
609 |
|
|
|
610 |
|
|
|
611 |
|
|
static void nodemgr_create_host_dev_files(struct hpsb_host *host)
|
612 |
|
|
{
|
613 |
|
|
struct device *dev = &host->device;
|
614 |
|
|
int i;
|
615 |
|
|
|
616 |
|
|
for (i = 0; i < ARRAY_SIZE(fw_host_attrs); i++)
|
617 |
|
|
if (device_create_file(dev, fw_host_attrs[i]))
|
618 |
|
|
goto fail;
|
619 |
|
|
return;
|
620 |
|
|
fail:
|
621 |
|
|
HPSB_ERR("Failed to add sysfs attribute");
|
622 |
|
|
}
|
623 |
|
|
|
624 |
|
|
|
625 |
|
|
static struct node_entry *find_entry_by_nodeid(struct hpsb_host *host,
|
626 |
|
|
nodeid_t nodeid);
|
627 |
|
|
|
628 |
|
|
static void nodemgr_update_host_dev_links(struct hpsb_host *host)
|
629 |
|
|
{
|
630 |
|
|
struct device *dev = &host->device;
|
631 |
|
|
struct node_entry *ne;
|
632 |
|
|
|
633 |
|
|
sysfs_remove_link(&dev->kobj, "irm_id");
|
634 |
|
|
sysfs_remove_link(&dev->kobj, "busmgr_id");
|
635 |
|
|
sysfs_remove_link(&dev->kobj, "host_id");
|
636 |
|
|
|
637 |
|
|
if ((ne = find_entry_by_nodeid(host, host->irm_id)) &&
|
638 |
|
|
sysfs_create_link(&dev->kobj, &ne->device.kobj, "irm_id"))
|
639 |
|
|
goto fail;
|
640 |
|
|
if ((ne = find_entry_by_nodeid(host, host->busmgr_id)) &&
|
641 |
|
|
sysfs_create_link(&dev->kobj, &ne->device.kobj, "busmgr_id"))
|
642 |
|
|
goto fail;
|
643 |
|
|
if ((ne = find_entry_by_nodeid(host, host->node_id)) &&
|
644 |
|
|
sysfs_create_link(&dev->kobj, &ne->device.kobj, "host_id"))
|
645 |
|
|
goto fail;
|
646 |
|
|
return;
|
647 |
|
|
fail:
|
648 |
|
|
HPSB_ERR("Failed to update sysfs attributes for host %d", host->id);
|
649 |
|
|
}
|
650 |
|
|
|
651 |
|
|
static void nodemgr_create_ud_dev_files(struct unit_directory *ud)
|
652 |
|
|
{
|
653 |
|
|
struct device *dev = &ud->device;
|
654 |
|
|
int i;
|
655 |
|
|
|
656 |
|
|
for (i = 0; i < ARRAY_SIZE(fw_ud_attrs); i++)
|
657 |
|
|
if (device_create_file(dev, fw_ud_attrs[i]))
|
658 |
|
|
goto fail;
|
659 |
|
|
if (ud->flags & UNIT_DIRECTORY_SPECIFIER_ID)
|
660 |
|
|
if (device_create_file(dev, &dev_attr_ud_specifier_id))
|
661 |
|
|
goto fail;
|
662 |
|
|
if (ud->flags & UNIT_DIRECTORY_VERSION)
|
663 |
|
|
if (device_create_file(dev, &dev_attr_ud_version))
|
664 |
|
|
goto fail;
|
665 |
|
|
if (ud->flags & UNIT_DIRECTORY_VENDOR_ID) {
|
666 |
|
|
if (device_create_file(dev, &dev_attr_ud_vendor_id))
|
667 |
|
|
goto fail;
|
668 |
|
|
if (ud->vendor_name_kv &&
|
669 |
|
|
device_create_file(dev, &dev_attr_ud_vendor_name_kv))
|
670 |
|
|
goto fail;
|
671 |
|
|
}
|
672 |
|
|
if (ud->flags & UNIT_DIRECTORY_MODEL_ID) {
|
673 |
|
|
if (device_create_file(dev, &dev_attr_ud_model_id))
|
674 |
|
|
goto fail;
|
675 |
|
|
if (ud->model_name_kv &&
|
676 |
|
|
device_create_file(dev, &dev_attr_ud_model_name_kv))
|
677 |
|
|
goto fail;
|
678 |
|
|
}
|
679 |
|
|
return;
|
680 |
|
|
fail:
|
681 |
|
|
HPSB_ERR("Failed to add sysfs attribute");
|
682 |
|
|
}
|
683 |
|
|
|
684 |
|
|
|
685 |
|
|
static int nodemgr_bus_match(struct device * dev, struct device_driver * drv)
|
686 |
|
|
{
|
687 |
|
|
struct hpsb_protocol_driver *driver;
|
688 |
|
|
struct unit_directory *ud;
|
689 |
|
|
struct ieee1394_device_id *id;
|
690 |
|
|
|
691 |
|
|
/* We only match unit directories */
|
692 |
|
|
if (dev->platform_data != &nodemgr_ud_platform_data)
|
693 |
|
|
return 0;
|
694 |
|
|
|
695 |
|
|
ud = container_of(dev, struct unit_directory, device);
|
696 |
|
|
if (ud->ne->in_limbo || ud->ignore_driver)
|
697 |
|
|
return 0;
|
698 |
|
|
|
699 |
|
|
/* We only match drivers of type hpsb_protocol_driver */
|
700 |
|
|
if (drv == &nodemgr_mid_layer_driver)
|
701 |
|
|
return 0;
|
702 |
|
|
|
703 |
|
|
driver = container_of(drv, struct hpsb_protocol_driver, driver);
|
704 |
|
|
for (id = driver->id_table; id->match_flags != 0; id++) {
|
705 |
|
|
if ((id->match_flags & IEEE1394_MATCH_VENDOR_ID) &&
|
706 |
|
|
id->vendor_id != ud->vendor_id)
|
707 |
|
|
continue;
|
708 |
|
|
|
709 |
|
|
if ((id->match_flags & IEEE1394_MATCH_MODEL_ID) &&
|
710 |
|
|
id->model_id != ud->model_id)
|
711 |
|
|
continue;
|
712 |
|
|
|
713 |
|
|
if ((id->match_flags & IEEE1394_MATCH_SPECIFIER_ID) &&
|
714 |
|
|
id->specifier_id != ud->specifier_id)
|
715 |
|
|
continue;
|
716 |
|
|
|
717 |
|
|
if ((id->match_flags & IEEE1394_MATCH_VERSION) &&
|
718 |
|
|
id->version != ud->version)
|
719 |
|
|
continue;
|
720 |
|
|
|
721 |
|
|
return 1;
|
722 |
|
|
}
|
723 |
|
|
|
724 |
|
|
return 0;
|
725 |
|
|
}
|
726 |
|
|
|
727 |
|
|
|
728 |
|
|
static DEFINE_MUTEX(nodemgr_serialize_remove_uds);
|
729 |
|
|
|
730 |
|
|
static void nodemgr_remove_uds(struct node_entry *ne)
|
731 |
|
|
{
|
732 |
|
|
struct device *dev;
|
733 |
|
|
struct unit_directory *tmp, *ud;
|
734 |
|
|
|
735 |
|
|
/* Iteration over nodemgr_ud_class.devices has to be protected by
|
736 |
|
|
* nodemgr_ud_class.sem, but device_unregister() will eventually
|
737 |
|
|
* take nodemgr_ud_class.sem too. Therefore pick out one ud at a time,
|
738 |
|
|
* release the semaphore, and then unregister the ud. Since this code
|
739 |
|
|
* may be called from other contexts besides the knodemgrds, protect the
|
740 |
|
|
* gap after release of the semaphore by nodemgr_serialize_remove_uds.
|
741 |
|
|
*/
|
742 |
|
|
mutex_lock(&nodemgr_serialize_remove_uds);
|
743 |
|
|
for (;;) {
|
744 |
|
|
ud = NULL;
|
745 |
|
|
down(&nodemgr_ud_class.sem);
|
746 |
|
|
list_for_each_entry(dev, &nodemgr_ud_class.devices, node) {
|
747 |
|
|
tmp = container_of(dev, struct unit_directory,
|
748 |
|
|
unit_dev);
|
749 |
|
|
if (tmp->ne == ne) {
|
750 |
|
|
ud = tmp;
|
751 |
|
|
break;
|
752 |
|
|
}
|
753 |
|
|
}
|
754 |
|
|
up(&nodemgr_ud_class.sem);
|
755 |
|
|
if (ud == NULL)
|
756 |
|
|
break;
|
757 |
|
|
device_unregister(&ud->unit_dev);
|
758 |
|
|
device_unregister(&ud->device);
|
759 |
|
|
}
|
760 |
|
|
mutex_unlock(&nodemgr_serialize_remove_uds);
|
761 |
|
|
}
|
762 |
|
|
|
763 |
|
|
|
764 |
|
|
static void nodemgr_remove_ne(struct node_entry *ne)
|
765 |
|
|
{
|
766 |
|
|
struct device *dev;
|
767 |
|
|
|
768 |
|
|
dev = get_device(&ne->device);
|
769 |
|
|
if (!dev)
|
770 |
|
|
return;
|
771 |
|
|
|
772 |
|
|
HPSB_DEBUG("Node removed: ID:BUS[" NODE_BUS_FMT "] GUID[%016Lx]",
|
773 |
|
|
NODE_BUS_ARGS(ne->host, ne->nodeid), (unsigned long long)ne->guid);
|
774 |
|
|
nodemgr_remove_uds(ne);
|
775 |
|
|
|
776 |
|
|
device_unregister(&ne->node_dev);
|
777 |
|
|
device_unregister(dev);
|
778 |
|
|
|
779 |
|
|
put_device(dev);
|
780 |
|
|
}
|
781 |
|
|
|
782 |
|
|
static int __nodemgr_remove_host_dev(struct device *dev, void *data)
|
783 |
|
|
{
|
784 |
|
|
if (dev->bus == &ieee1394_bus_type)
|
785 |
|
|
nodemgr_remove_ne(container_of(dev, struct node_entry,
|
786 |
|
|
device));
|
787 |
|
|
return 0;
|
788 |
|
|
}
|
789 |
|
|
|
790 |
|
|
static void nodemgr_remove_host_dev(struct device *dev)
|
791 |
|
|
{
|
792 |
|
|
WARN_ON(device_for_each_child(dev, NULL, __nodemgr_remove_host_dev));
|
793 |
|
|
sysfs_remove_link(&dev->kobj, "irm_id");
|
794 |
|
|
sysfs_remove_link(&dev->kobj, "busmgr_id");
|
795 |
|
|
sysfs_remove_link(&dev->kobj, "host_id");
|
796 |
|
|
}
|
797 |
|
|
|
798 |
|
|
|
799 |
|
|
static void nodemgr_update_bus_options(struct node_entry *ne)
|
800 |
|
|
{
|
801 |
|
|
#ifdef CONFIG_IEEE1394_VERBOSEDEBUG
|
802 |
|
|
static const u16 mr[] = { 4, 64, 1024, 0};
|
803 |
|
|
#endif
|
804 |
|
|
quadlet_t busoptions = be32_to_cpu(ne->csr->bus_info_data[2]);
|
805 |
|
|
|
806 |
|
|
ne->busopt.irmc = (busoptions >> 31) & 1;
|
807 |
|
|
ne->busopt.cmc = (busoptions >> 30) & 1;
|
808 |
|
|
ne->busopt.isc = (busoptions >> 29) & 1;
|
809 |
|
|
ne->busopt.bmc = (busoptions >> 28) & 1;
|
810 |
|
|
ne->busopt.pmc = (busoptions >> 27) & 1;
|
811 |
|
|
ne->busopt.cyc_clk_acc = (busoptions >> 16) & 0xff;
|
812 |
|
|
ne->busopt.max_rec = 1 << (((busoptions >> 12) & 0xf) + 1);
|
813 |
|
|
ne->busopt.max_rom = (busoptions >> 8) & 0x3;
|
814 |
|
|
ne->busopt.generation = (busoptions >> 4) & 0xf;
|
815 |
|
|
ne->busopt.lnkspd = busoptions & 0x7;
|
816 |
|
|
|
817 |
|
|
HPSB_VERBOSE("NodeMgr: raw=0x%08x irmc=%d cmc=%d isc=%d bmc=%d pmc=%d "
|
818 |
|
|
"cyc_clk_acc=%d max_rec=%d max_rom=%d gen=%d lspd=%d",
|
819 |
|
|
busoptions, ne->busopt.irmc, ne->busopt.cmc,
|
820 |
|
|
ne->busopt.isc, ne->busopt.bmc, ne->busopt.pmc,
|
821 |
|
|
ne->busopt.cyc_clk_acc, ne->busopt.max_rec,
|
822 |
|
|
mr[ne->busopt.max_rom],
|
823 |
|
|
ne->busopt.generation, ne->busopt.lnkspd);
|
824 |
|
|
}
|
825 |
|
|
|
826 |
|
|
|
827 |
|
|
static struct node_entry *nodemgr_create_node(octlet_t guid, struct csr1212_csr *csr,
|
828 |
|
|
struct host_info *hi, nodeid_t nodeid,
|
829 |
|
|
unsigned int generation)
|
830 |
|
|
{
|
831 |
|
|
struct hpsb_host *host = hi->host;
|
832 |
|
|
struct node_entry *ne;
|
833 |
|
|
|
834 |
|
|
ne = kzalloc(sizeof(*ne), GFP_KERNEL);
|
835 |
|
|
if (!ne)
|
836 |
|
|
goto fail_alloc;
|
837 |
|
|
|
838 |
|
|
ne->host = host;
|
839 |
|
|
ne->nodeid = nodeid;
|
840 |
|
|
ne->generation = generation;
|
841 |
|
|
ne->needs_probe = 1;
|
842 |
|
|
|
843 |
|
|
ne->guid = guid;
|
844 |
|
|
ne->guid_vendor_id = (guid >> 40) & 0xffffff;
|
845 |
|
|
ne->csr = csr;
|
846 |
|
|
|
847 |
|
|
memcpy(&ne->device, &nodemgr_dev_template_ne,
|
848 |
|
|
sizeof(ne->device));
|
849 |
|
|
ne->device.parent = &host->device;
|
850 |
|
|
snprintf(ne->device.bus_id, BUS_ID_SIZE, "%016Lx",
|
851 |
|
|
(unsigned long long)(ne->guid));
|
852 |
|
|
|
853 |
|
|
ne->node_dev.parent = &ne->device;
|
854 |
|
|
ne->node_dev.class = &nodemgr_ne_class;
|
855 |
|
|
snprintf(ne->node_dev.bus_id, BUS_ID_SIZE, "%016Lx",
|
856 |
|
|
(unsigned long long)(ne->guid));
|
857 |
|
|
|
858 |
|
|
if (device_register(&ne->device))
|
859 |
|
|
goto fail_devreg;
|
860 |
|
|
if (device_register(&ne->node_dev))
|
861 |
|
|
goto fail_classdevreg;
|
862 |
|
|
get_device(&ne->device);
|
863 |
|
|
|
864 |
|
|
nodemgr_create_ne_dev_files(ne);
|
865 |
|
|
|
866 |
|
|
nodemgr_update_bus_options(ne);
|
867 |
|
|
|
868 |
|
|
HPSB_DEBUG("%s added: ID:BUS[" NODE_BUS_FMT "] GUID[%016Lx]",
|
869 |
|
|
(host->node_id == nodeid) ? "Host" : "Node",
|
870 |
|
|
NODE_BUS_ARGS(host, nodeid), (unsigned long long)guid);
|
871 |
|
|
|
872 |
|
|
return ne;
|
873 |
|
|
|
874 |
|
|
fail_classdevreg:
|
875 |
|
|
device_unregister(&ne->device);
|
876 |
|
|
fail_devreg:
|
877 |
|
|
kfree(ne);
|
878 |
|
|
fail_alloc:
|
879 |
|
|
HPSB_ERR("Failed to create node ID:BUS[" NODE_BUS_FMT "] GUID[%016Lx]",
|
880 |
|
|
NODE_BUS_ARGS(host, nodeid), (unsigned long long)guid);
|
881 |
|
|
|
882 |
|
|
return NULL;
|
883 |
|
|
}
|
884 |
|
|
|
885 |
|
|
|
886 |
|
|
static struct node_entry *find_entry_by_guid(u64 guid)
|
887 |
|
|
{
|
888 |
|
|
struct device *dev;
|
889 |
|
|
struct node_entry *ne, *ret_ne = NULL;
|
890 |
|
|
|
891 |
|
|
down(&nodemgr_ne_class.sem);
|
892 |
|
|
list_for_each_entry(dev, &nodemgr_ne_class.devices, node) {
|
893 |
|
|
ne = container_of(dev, struct node_entry, node_dev);
|
894 |
|
|
|
895 |
|
|
if (ne->guid == guid) {
|
896 |
|
|
ret_ne = ne;
|
897 |
|
|
break;
|
898 |
|
|
}
|
899 |
|
|
}
|
900 |
|
|
up(&nodemgr_ne_class.sem);
|
901 |
|
|
|
902 |
|
|
return ret_ne;
|
903 |
|
|
}
|
904 |
|
|
|
905 |
|
|
|
906 |
|
|
static struct node_entry *find_entry_by_nodeid(struct hpsb_host *host,
|
907 |
|
|
nodeid_t nodeid)
|
908 |
|
|
{
|
909 |
|
|
struct device *dev;
|
910 |
|
|
struct node_entry *ne, *ret_ne = NULL;
|
911 |
|
|
|
912 |
|
|
down(&nodemgr_ne_class.sem);
|
913 |
|
|
list_for_each_entry(dev, &nodemgr_ne_class.devices, node) {
|
914 |
|
|
ne = container_of(dev, struct node_entry, node_dev);
|
915 |
|
|
|
916 |
|
|
if (ne->host == host && ne->nodeid == nodeid) {
|
917 |
|
|
ret_ne = ne;
|
918 |
|
|
break;
|
919 |
|
|
}
|
920 |
|
|
}
|
921 |
|
|
up(&nodemgr_ne_class.sem);
|
922 |
|
|
|
923 |
|
|
return ret_ne;
|
924 |
|
|
}
|
925 |
|
|
|
926 |
|
|
|
927 |
|
|
static void nodemgr_register_device(struct node_entry *ne,
|
928 |
|
|
struct unit_directory *ud, struct device *parent)
|
929 |
|
|
{
|
930 |
|
|
memcpy(&ud->device, &nodemgr_dev_template_ud,
|
931 |
|
|
sizeof(ud->device));
|
932 |
|
|
|
933 |
|
|
ud->device.parent = parent;
|
934 |
|
|
|
935 |
|
|
snprintf(ud->device.bus_id, BUS_ID_SIZE, "%s-%u",
|
936 |
|
|
ne->device.bus_id, ud->id);
|
937 |
|
|
|
938 |
|
|
ud->unit_dev.parent = &ud->device;
|
939 |
|
|
ud->unit_dev.class = &nodemgr_ud_class;
|
940 |
|
|
snprintf(ud->unit_dev.bus_id, BUS_ID_SIZE, "%s-%u",
|
941 |
|
|
ne->device.bus_id, ud->id);
|
942 |
|
|
|
943 |
|
|
if (device_register(&ud->device))
|
944 |
|
|
goto fail_devreg;
|
945 |
|
|
if (device_register(&ud->unit_dev))
|
946 |
|
|
goto fail_classdevreg;
|
947 |
|
|
get_device(&ud->device);
|
948 |
|
|
|
949 |
|
|
nodemgr_create_ud_dev_files(ud);
|
950 |
|
|
|
951 |
|
|
return;
|
952 |
|
|
|
953 |
|
|
fail_classdevreg:
|
954 |
|
|
device_unregister(&ud->device);
|
955 |
|
|
fail_devreg:
|
956 |
|
|
HPSB_ERR("Failed to create unit %s", ud->device.bus_id);
|
957 |
|
|
}
|
958 |
|
|
|
959 |
|
|
|
960 |
|
|
/* This implementation currently only scans the config rom and its
|
961 |
|
|
* immediate unit directories looking for software_id and
|
962 |
|
|
* software_version entries, in order to get driver autoloading working. */
|
963 |
|
|
static struct unit_directory *nodemgr_process_unit_directory
|
964 |
|
|
(struct host_info *hi, struct node_entry *ne, struct csr1212_keyval *ud_kv,
|
965 |
|
|
unsigned int *id, struct unit_directory *parent)
|
966 |
|
|
{
|
967 |
|
|
struct unit_directory *ud;
|
968 |
|
|
struct unit_directory *ud_child = NULL;
|
969 |
|
|
struct csr1212_dentry *dentry;
|
970 |
|
|
struct csr1212_keyval *kv;
|
971 |
|
|
u8 last_key_id = 0;
|
972 |
|
|
|
973 |
|
|
ud = kzalloc(sizeof(*ud), GFP_KERNEL);
|
974 |
|
|
if (!ud)
|
975 |
|
|
goto unit_directory_error;
|
976 |
|
|
|
977 |
|
|
ud->ne = ne;
|
978 |
|
|
ud->ignore_driver = ignore_drivers;
|
979 |
|
|
ud->address = ud_kv->offset + CSR1212_REGISTER_SPACE_BASE;
|
980 |
|
|
ud->directory_id = ud->address & 0xffffff;
|
981 |
|
|
ud->ud_kv = ud_kv;
|
982 |
|
|
ud->id = (*id)++;
|
983 |
|
|
|
984 |
|
|
csr1212_for_each_dir_entry(ne->csr, kv, ud_kv, dentry) {
|
985 |
|
|
switch (kv->key.id) {
|
986 |
|
|
case CSR1212_KV_ID_VENDOR:
|
987 |
|
|
if (kv->key.type == CSR1212_KV_TYPE_IMMEDIATE) {
|
988 |
|
|
ud->vendor_id = kv->value.immediate;
|
989 |
|
|
ud->flags |= UNIT_DIRECTORY_VENDOR_ID;
|
990 |
|
|
}
|
991 |
|
|
break;
|
992 |
|
|
|
993 |
|
|
case CSR1212_KV_ID_MODEL:
|
994 |
|
|
ud->model_id = kv->value.immediate;
|
995 |
|
|
ud->flags |= UNIT_DIRECTORY_MODEL_ID;
|
996 |
|
|
break;
|
997 |
|
|
|
998 |
|
|
case CSR1212_KV_ID_SPECIFIER_ID:
|
999 |
|
|
ud->specifier_id = kv->value.immediate;
|
1000 |
|
|
ud->flags |= UNIT_DIRECTORY_SPECIFIER_ID;
|
1001 |
|
|
break;
|
1002 |
|
|
|
1003 |
|
|
case CSR1212_KV_ID_VERSION:
|
1004 |
|
|
ud->version = kv->value.immediate;
|
1005 |
|
|
ud->flags |= UNIT_DIRECTORY_VERSION;
|
1006 |
|
|
break;
|
1007 |
|
|
|
1008 |
|
|
case CSR1212_KV_ID_DESCRIPTOR:
|
1009 |
|
|
if (kv->key.type == CSR1212_KV_TYPE_LEAF &&
|
1010 |
|
|
CSR1212_DESCRIPTOR_LEAF_TYPE(kv) == 0 &&
|
1011 |
|
|
CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID(kv) == 0 &&
|
1012 |
|
|
CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH(kv) == 0 &&
|
1013 |
|
|
CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET(kv) == 0 &&
|
1014 |
|
|
CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE(kv) == 0) {
|
1015 |
|
|
switch (last_key_id) {
|
1016 |
|
|
case CSR1212_KV_ID_VENDOR:
|
1017 |
|
|
csr1212_keep_keyval(kv);
|
1018 |
|
|
ud->vendor_name_kv = kv;
|
1019 |
|
|
break;
|
1020 |
|
|
|
1021 |
|
|
case CSR1212_KV_ID_MODEL:
|
1022 |
|
|
csr1212_keep_keyval(kv);
|
1023 |
|
|
ud->model_name_kv = kv;
|
1024 |
|
|
break;
|
1025 |
|
|
|
1026 |
|
|
}
|
1027 |
|
|
} /* else if (kv->key.type == CSR1212_KV_TYPE_DIRECTORY) ... */
|
1028 |
|
|
break;
|
1029 |
|
|
|
1030 |
|
|
case CSR1212_KV_ID_DEPENDENT_INFO:
|
1031 |
|
|
/* Logical Unit Number */
|
1032 |
|
|
if (kv->key.type == CSR1212_KV_TYPE_IMMEDIATE) {
|
1033 |
|
|
if (ud->flags & UNIT_DIRECTORY_HAS_LUN) {
|
1034 |
|
|
ud_child = kmemdup(ud, sizeof(*ud_child), GFP_KERNEL);
|
1035 |
|
|
if (!ud_child)
|
1036 |
|
|
goto unit_directory_error;
|
1037 |
|
|
nodemgr_register_device(ne, ud_child, &ne->device);
|
1038 |
|
|
ud_child = NULL;
|
1039 |
|
|
|
1040 |
|
|
ud->id = (*id)++;
|
1041 |
|
|
}
|
1042 |
|
|
ud->lun = kv->value.immediate;
|
1043 |
|
|
ud->flags |= UNIT_DIRECTORY_HAS_LUN;
|
1044 |
|
|
|
1045 |
|
|
/* Logical Unit Directory */
|
1046 |
|
|
} else if (kv->key.type == CSR1212_KV_TYPE_DIRECTORY) {
|
1047 |
|
|
/* This should really be done in SBP2 as this is
|
1048 |
|
|
* doing SBP2 specific parsing.
|
1049 |
|
|
*/
|
1050 |
|
|
|
1051 |
|
|
/* first register the parent unit */
|
1052 |
|
|
ud->flags |= UNIT_DIRECTORY_HAS_LUN_DIRECTORY;
|
1053 |
|
|
if (ud->device.bus != &ieee1394_bus_type)
|
1054 |
|
|
nodemgr_register_device(ne, ud, &ne->device);
|
1055 |
|
|
|
1056 |
|
|
/* process the child unit */
|
1057 |
|
|
ud_child = nodemgr_process_unit_directory(hi, ne, kv, id, ud);
|
1058 |
|
|
|
1059 |
|
|
if (ud_child == NULL)
|
1060 |
|
|
break;
|
1061 |
|
|
|
1062 |
|
|
/* inherit unspecified values, the driver core picks it up */
|
1063 |
|
|
if ((ud->flags & UNIT_DIRECTORY_MODEL_ID) &&
|
1064 |
|
|
!(ud_child->flags & UNIT_DIRECTORY_MODEL_ID))
|
1065 |
|
|
{
|
1066 |
|
|
ud_child->flags |= UNIT_DIRECTORY_MODEL_ID;
|
1067 |
|
|
ud_child->model_id = ud->model_id;
|
1068 |
|
|
}
|
1069 |
|
|
if ((ud->flags & UNIT_DIRECTORY_SPECIFIER_ID) &&
|
1070 |
|
|
!(ud_child->flags & UNIT_DIRECTORY_SPECIFIER_ID))
|
1071 |
|
|
{
|
1072 |
|
|
ud_child->flags |= UNIT_DIRECTORY_SPECIFIER_ID;
|
1073 |
|
|
ud_child->specifier_id = ud->specifier_id;
|
1074 |
|
|
}
|
1075 |
|
|
if ((ud->flags & UNIT_DIRECTORY_VERSION) &&
|
1076 |
|
|
!(ud_child->flags & UNIT_DIRECTORY_VERSION))
|
1077 |
|
|
{
|
1078 |
|
|
ud_child->flags |= UNIT_DIRECTORY_VERSION;
|
1079 |
|
|
ud_child->version = ud->version;
|
1080 |
|
|
}
|
1081 |
|
|
|
1082 |
|
|
/* register the child unit */
|
1083 |
|
|
ud_child->flags |= UNIT_DIRECTORY_LUN_DIRECTORY;
|
1084 |
|
|
nodemgr_register_device(ne, ud_child, &ud->device);
|
1085 |
|
|
}
|
1086 |
|
|
|
1087 |
|
|
break;
|
1088 |
|
|
|
1089 |
|
|
case CSR1212_KV_ID_DIRECTORY_ID:
|
1090 |
|
|
ud->directory_id = kv->value.immediate;
|
1091 |
|
|
break;
|
1092 |
|
|
|
1093 |
|
|
default:
|
1094 |
|
|
break;
|
1095 |
|
|
}
|
1096 |
|
|
last_key_id = kv->key.id;
|
1097 |
|
|
}
|
1098 |
|
|
|
1099 |
|
|
/* do not process child units here and only if not already registered */
|
1100 |
|
|
if (!parent && ud->device.bus != &ieee1394_bus_type)
|
1101 |
|
|
nodemgr_register_device(ne, ud, &ne->device);
|
1102 |
|
|
|
1103 |
|
|
return ud;
|
1104 |
|
|
|
1105 |
|
|
unit_directory_error:
|
1106 |
|
|
kfree(ud);
|
1107 |
|
|
return NULL;
|
1108 |
|
|
}
|
1109 |
|
|
|
1110 |
|
|
|
1111 |
|
|
static void nodemgr_process_root_directory(struct host_info *hi, struct node_entry *ne)
|
1112 |
|
|
{
|
1113 |
|
|
unsigned int ud_id = 0;
|
1114 |
|
|
struct csr1212_dentry *dentry;
|
1115 |
|
|
struct csr1212_keyval *kv, *vendor_name_kv = NULL;
|
1116 |
|
|
u8 last_key_id = 0;
|
1117 |
|
|
|
1118 |
|
|
ne->needs_probe = 0;
|
1119 |
|
|
|
1120 |
|
|
csr1212_for_each_dir_entry(ne->csr, kv, ne->csr->root_kv, dentry) {
|
1121 |
|
|
switch (kv->key.id) {
|
1122 |
|
|
case CSR1212_KV_ID_VENDOR:
|
1123 |
|
|
ne->vendor_id = kv->value.immediate;
|
1124 |
|
|
break;
|
1125 |
|
|
|
1126 |
|
|
case CSR1212_KV_ID_NODE_CAPABILITIES:
|
1127 |
|
|
ne->capabilities = kv->value.immediate;
|
1128 |
|
|
break;
|
1129 |
|
|
|
1130 |
|
|
case CSR1212_KV_ID_UNIT:
|
1131 |
|
|
nodemgr_process_unit_directory(hi, ne, kv, &ud_id, NULL);
|
1132 |
|
|
break;
|
1133 |
|
|
|
1134 |
|
|
case CSR1212_KV_ID_DESCRIPTOR:
|
1135 |
|
|
if (last_key_id == CSR1212_KV_ID_VENDOR) {
|
1136 |
|
|
if (kv->key.type == CSR1212_KV_TYPE_LEAF &&
|
1137 |
|
|
CSR1212_DESCRIPTOR_LEAF_TYPE(kv) == 0 &&
|
1138 |
|
|
CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID(kv) == 0 &&
|
1139 |
|
|
CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH(kv) == 0 &&
|
1140 |
|
|
CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET(kv) == 0 &&
|
1141 |
|
|
CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE(kv) == 0) {
|
1142 |
|
|
csr1212_keep_keyval(kv);
|
1143 |
|
|
vendor_name_kv = kv;
|
1144 |
|
|
}
|
1145 |
|
|
}
|
1146 |
|
|
break;
|
1147 |
|
|
}
|
1148 |
|
|
last_key_id = kv->key.id;
|
1149 |
|
|
}
|
1150 |
|
|
|
1151 |
|
|
if (ne->vendor_name_kv) {
|
1152 |
|
|
kv = ne->vendor_name_kv;
|
1153 |
|
|
ne->vendor_name_kv = vendor_name_kv;
|
1154 |
|
|
csr1212_release_keyval(kv);
|
1155 |
|
|
} else if (vendor_name_kv) {
|
1156 |
|
|
ne->vendor_name_kv = vendor_name_kv;
|
1157 |
|
|
if (device_create_file(&ne->device,
|
1158 |
|
|
&dev_attr_ne_vendor_name_kv) != 0)
|
1159 |
|
|
HPSB_ERR("Failed to add sysfs attribute");
|
1160 |
|
|
}
|
1161 |
|
|
}
|
1162 |
|
|
|
1163 |
|
|
#ifdef CONFIG_HOTPLUG
|
1164 |
|
|
|
1165 |
|
|
static int nodemgr_uevent(struct device *dev, struct kobj_uevent_env *env)
|
1166 |
|
|
{
|
1167 |
|
|
struct unit_directory *ud;
|
1168 |
|
|
int retval = 0;
|
1169 |
|
|
/* ieee1394:venNmoNspNverN */
|
1170 |
|
|
char buf[8 + 1 + 3 + 8 + 2 + 8 + 2 + 8 + 3 + 8 + 1];
|
1171 |
|
|
|
1172 |
|
|
if (!dev)
|
1173 |
|
|
return -ENODEV;
|
1174 |
|
|
|
1175 |
|
|
ud = container_of(dev, struct unit_directory, unit_dev);
|
1176 |
|
|
|
1177 |
|
|
if (ud->ne->in_limbo || ud->ignore_driver)
|
1178 |
|
|
return -ENODEV;
|
1179 |
|
|
|
1180 |
|
|
#define PUT_ENVP(fmt,val) \
|
1181 |
|
|
do { \
|
1182 |
|
|
retval = add_uevent_var(env, fmt, val); \
|
1183 |
|
|
if (retval) \
|
1184 |
|
|
return retval; \
|
1185 |
|
|
} while (0)
|
1186 |
|
|
|
1187 |
|
|
PUT_ENVP("VENDOR_ID=%06x", ud->vendor_id);
|
1188 |
|
|
PUT_ENVP("MODEL_ID=%06x", ud->model_id);
|
1189 |
|
|
PUT_ENVP("GUID=%016Lx", (unsigned long long)ud->ne->guid);
|
1190 |
|
|
PUT_ENVP("SPECIFIER_ID=%06x", ud->specifier_id);
|
1191 |
|
|
PUT_ENVP("VERSION=%06x", ud->version);
|
1192 |
|
|
snprintf(buf, sizeof(buf), "ieee1394:ven%08Xmo%08Xsp%08Xver%08X",
|
1193 |
|
|
ud->vendor_id,
|
1194 |
|
|
ud->model_id,
|
1195 |
|
|
ud->specifier_id,
|
1196 |
|
|
ud->version);
|
1197 |
|
|
PUT_ENVP("MODALIAS=%s", buf);
|
1198 |
|
|
|
1199 |
|
|
#undef PUT_ENVP
|
1200 |
|
|
|
1201 |
|
|
return 0;
|
1202 |
|
|
}
|
1203 |
|
|
|
1204 |
|
|
#else
|
1205 |
|
|
|
1206 |
|
|
static int nodemgr_uevent(struct device *dev, struct kobj_uevent_env *env)
|
1207 |
|
|
{
|
1208 |
|
|
return -ENODEV;
|
1209 |
|
|
}
|
1210 |
|
|
|
1211 |
|
|
#endif /* CONFIG_HOTPLUG */
|
1212 |
|
|
|
1213 |
|
|
|
1214 |
|
|
int __hpsb_register_protocol(struct hpsb_protocol_driver *drv,
|
1215 |
|
|
struct module *owner)
|
1216 |
|
|
{
|
1217 |
|
|
int error;
|
1218 |
|
|
|
1219 |
|
|
drv->driver.bus = &ieee1394_bus_type;
|
1220 |
|
|
drv->driver.owner = owner;
|
1221 |
|
|
drv->driver.name = drv->name;
|
1222 |
|
|
|
1223 |
|
|
/* This will cause a probe for devices */
|
1224 |
|
|
error = driver_register(&drv->driver);
|
1225 |
|
|
if (!error)
|
1226 |
|
|
nodemgr_create_drv_files(drv);
|
1227 |
|
|
return error;
|
1228 |
|
|
}
|
1229 |
|
|
|
1230 |
|
|
void hpsb_unregister_protocol(struct hpsb_protocol_driver *driver)
|
1231 |
|
|
{
|
1232 |
|
|
nodemgr_remove_drv_files(driver);
|
1233 |
|
|
/* This will subsequently disconnect all devices that our driver
|
1234 |
|
|
* is attached to. */
|
1235 |
|
|
driver_unregister(&driver->driver);
|
1236 |
|
|
}
|
1237 |
|
|
|
1238 |
|
|
|
1239 |
|
|
/*
|
1240 |
|
|
* This function updates nodes that were present on the bus before the
|
1241 |
|
|
* reset and still are after the reset. The nodeid and the config rom
|
1242 |
|
|
* may have changed, and the drivers managing this device must be
|
1243 |
|
|
* informed that this device just went through a bus reset, to allow
|
1244 |
|
|
* the to take whatever actions required.
|
1245 |
|
|
*/
|
1246 |
|
|
static void nodemgr_update_node(struct node_entry *ne, struct csr1212_csr *csr,
|
1247 |
|
|
struct host_info *hi, nodeid_t nodeid,
|
1248 |
|
|
unsigned int generation)
|
1249 |
|
|
{
|
1250 |
|
|
if (ne->nodeid != nodeid) {
|
1251 |
|
|
HPSB_DEBUG("Node changed: " NODE_BUS_FMT " -> " NODE_BUS_FMT,
|
1252 |
|
|
NODE_BUS_ARGS(ne->host, ne->nodeid),
|
1253 |
|
|
NODE_BUS_ARGS(ne->host, nodeid));
|
1254 |
|
|
ne->nodeid = nodeid;
|
1255 |
|
|
}
|
1256 |
|
|
|
1257 |
|
|
if (ne->busopt.generation != ((be32_to_cpu(csr->bus_info_data[2]) >> 4) & 0xf)) {
|
1258 |
|
|
kfree(ne->csr->private);
|
1259 |
|
|
csr1212_destroy_csr(ne->csr);
|
1260 |
|
|
ne->csr = csr;
|
1261 |
|
|
|
1262 |
|
|
/* If the node's configrom generation has changed, we
|
1263 |
|
|
* unregister all the unit directories. */
|
1264 |
|
|
nodemgr_remove_uds(ne);
|
1265 |
|
|
|
1266 |
|
|
nodemgr_update_bus_options(ne);
|
1267 |
|
|
|
1268 |
|
|
/* Mark the node as new, so it gets re-probed */
|
1269 |
|
|
ne->needs_probe = 1;
|
1270 |
|
|
} else {
|
1271 |
|
|
/* old cache is valid, so update its generation */
|
1272 |
|
|
struct nodemgr_csr_info *ci = ne->csr->private;
|
1273 |
|
|
ci->generation = generation;
|
1274 |
|
|
/* free the partially filled now unneeded new cache */
|
1275 |
|
|
kfree(csr->private);
|
1276 |
|
|
csr1212_destroy_csr(csr);
|
1277 |
|
|
}
|
1278 |
|
|
|
1279 |
|
|
if (ne->in_limbo)
|
1280 |
|
|
nodemgr_resume_ne(ne);
|
1281 |
|
|
|
1282 |
|
|
/* Mark the node current */
|
1283 |
|
|
ne->generation = generation;
|
1284 |
|
|
}
|
1285 |
|
|
|
1286 |
|
|
|
1287 |
|
|
|
1288 |
|
|
static void nodemgr_node_scan_one(struct host_info *hi,
|
1289 |
|
|
nodeid_t nodeid, int generation)
|
1290 |
|
|
{
|
1291 |
|
|
struct hpsb_host *host = hi->host;
|
1292 |
|
|
struct node_entry *ne;
|
1293 |
|
|
octlet_t guid;
|
1294 |
|
|
struct csr1212_csr *csr;
|
1295 |
|
|
struct nodemgr_csr_info *ci;
|
1296 |
|
|
u8 *speed;
|
1297 |
|
|
|
1298 |
|
|
ci = kmalloc(sizeof(*ci), GFP_KERNEL);
|
1299 |
|
|
if (!ci)
|
1300 |
|
|
return;
|
1301 |
|
|
|
1302 |
|
|
ci->host = host;
|
1303 |
|
|
ci->nodeid = nodeid;
|
1304 |
|
|
ci->generation = generation;
|
1305 |
|
|
|
1306 |
|
|
/* Prepare for speed probe which occurs when reading the ROM */
|
1307 |
|
|
speed = &(host->speed[NODEID_TO_NODE(nodeid)]);
|
1308 |
|
|
if (*speed > host->csr.lnk_spd)
|
1309 |
|
|
*speed = host->csr.lnk_spd;
|
1310 |
|
|
ci->speed_unverified = *speed > IEEE1394_SPEED_100;
|
1311 |
|
|
|
1312 |
|
|
/* We need to detect when the ConfigROM's generation has changed,
|
1313 |
|
|
* so we only update the node's info when it needs to be. */
|
1314 |
|
|
|
1315 |
|
|
csr = csr1212_create_csr(&nodemgr_csr_ops, 5 * sizeof(quadlet_t), ci);
|
1316 |
|
|
if (!csr || csr1212_parse_csr(csr) != CSR1212_SUCCESS) {
|
1317 |
|
|
HPSB_ERR("Error parsing configrom for node " NODE_BUS_FMT,
|
1318 |
|
|
NODE_BUS_ARGS(host, nodeid));
|
1319 |
|
|
if (csr)
|
1320 |
|
|
csr1212_destroy_csr(csr);
|
1321 |
|
|
kfree(ci);
|
1322 |
|
|
return;
|
1323 |
|
|
}
|
1324 |
|
|
|
1325 |
|
|
if (csr->bus_info_data[1] != IEEE1394_BUSID_MAGIC) {
|
1326 |
|
|
/* This isn't a 1394 device, but we let it slide. There
|
1327 |
|
|
* was a report of a device with broken firmware which
|
1328 |
|
|
* reported '2394' instead of '1394', which is obviously a
|
1329 |
|
|
* mistake. One would hope that a non-1394 device never
|
1330 |
|
|
* gets connected to Firewire bus. If someone does, we
|
1331 |
|
|
* shouldn't be held responsible, so we'll allow it with a
|
1332 |
|
|
* warning. */
|
1333 |
|
|
HPSB_WARN("Node " NODE_BUS_FMT " has invalid busID magic [0x%08x]",
|
1334 |
|
|
NODE_BUS_ARGS(host, nodeid), csr->bus_info_data[1]);
|
1335 |
|
|
}
|
1336 |
|
|
|
1337 |
|
|
guid = ((u64)be32_to_cpu(csr->bus_info_data[3]) << 32) | be32_to_cpu(csr->bus_info_data[4]);
|
1338 |
|
|
ne = find_entry_by_guid(guid);
|
1339 |
|
|
|
1340 |
|
|
if (ne && ne->host != host && ne->in_limbo) {
|
1341 |
|
|
/* Must have moved this device from one host to another */
|
1342 |
|
|
nodemgr_remove_ne(ne);
|
1343 |
|
|
ne = NULL;
|
1344 |
|
|
}
|
1345 |
|
|
|
1346 |
|
|
if (!ne)
|
1347 |
|
|
nodemgr_create_node(guid, csr, hi, nodeid, generation);
|
1348 |
|
|
else
|
1349 |
|
|
nodemgr_update_node(ne, csr, hi, nodeid, generation);
|
1350 |
|
|
}
|
1351 |
|
|
|
1352 |
|
|
|
1353 |
|
|
static void nodemgr_node_scan(struct host_info *hi, int generation)
|
1354 |
|
|
{
|
1355 |
|
|
int count;
|
1356 |
|
|
struct hpsb_host *host = hi->host;
|
1357 |
|
|
struct selfid *sid = (struct selfid *)host->topology_map;
|
1358 |
|
|
nodeid_t nodeid = LOCAL_BUS;
|
1359 |
|
|
|
1360 |
|
|
/* Scan each node on the bus */
|
1361 |
|
|
for (count = host->selfid_count; count; count--, sid++) {
|
1362 |
|
|
if (sid->extended)
|
1363 |
|
|
continue;
|
1364 |
|
|
|
1365 |
|
|
if (!sid->link_active) {
|
1366 |
|
|
nodeid++;
|
1367 |
|
|
continue;
|
1368 |
|
|
}
|
1369 |
|
|
nodemgr_node_scan_one(hi, nodeid++, generation);
|
1370 |
|
|
}
|
1371 |
|
|
}
|
1372 |
|
|
|
1373 |
|
|
|
1374 |
|
|
static void nodemgr_suspend_ne(struct node_entry *ne)
|
1375 |
|
|
{
|
1376 |
|
|
struct device *dev;
|
1377 |
|
|
struct unit_directory *ud;
|
1378 |
|
|
struct device_driver *drv;
|
1379 |
|
|
int error;
|
1380 |
|
|
|
1381 |
|
|
HPSB_DEBUG("Node suspended: ID:BUS[" NODE_BUS_FMT "] GUID[%016Lx]",
|
1382 |
|
|
NODE_BUS_ARGS(ne->host, ne->nodeid), (unsigned long long)ne->guid);
|
1383 |
|
|
|
1384 |
|
|
ne->in_limbo = 1;
|
1385 |
|
|
WARN_ON(device_create_file(&ne->device, &dev_attr_ne_in_limbo));
|
1386 |
|
|
|
1387 |
|
|
down(&nodemgr_ud_class.sem);
|
1388 |
|
|
list_for_each_entry(dev, &nodemgr_ud_class.devices, node) {
|
1389 |
|
|
ud = container_of(dev, struct unit_directory, unit_dev);
|
1390 |
|
|
if (ud->ne != ne)
|
1391 |
|
|
continue;
|
1392 |
|
|
|
1393 |
|
|
drv = get_driver(ud->device.driver);
|
1394 |
|
|
if (!drv)
|
1395 |
|
|
continue;
|
1396 |
|
|
|
1397 |
|
|
error = 1; /* release if suspend is not implemented */
|
1398 |
|
|
if (drv->suspend) {
|
1399 |
|
|
down(&ud->device.sem);
|
1400 |
|
|
error = drv->suspend(&ud->device, PMSG_SUSPEND);
|
1401 |
|
|
up(&ud->device.sem);
|
1402 |
|
|
}
|
1403 |
|
|
if (error)
|
1404 |
|
|
device_release_driver(&ud->device);
|
1405 |
|
|
put_driver(drv);
|
1406 |
|
|
}
|
1407 |
|
|
up(&nodemgr_ud_class.sem);
|
1408 |
|
|
}
|
1409 |
|
|
|
1410 |
|
|
|
1411 |
|
|
static void nodemgr_resume_ne(struct node_entry *ne)
|
1412 |
|
|
{
|
1413 |
|
|
struct device *dev;
|
1414 |
|
|
struct unit_directory *ud;
|
1415 |
|
|
struct device_driver *drv;
|
1416 |
|
|
|
1417 |
|
|
ne->in_limbo = 0;
|
1418 |
|
|
device_remove_file(&ne->device, &dev_attr_ne_in_limbo);
|
1419 |
|
|
|
1420 |
|
|
down(&nodemgr_ud_class.sem);
|
1421 |
|
|
list_for_each_entry(dev, &nodemgr_ud_class.devices, node) {
|
1422 |
|
|
ud = container_of(dev, struct unit_directory, unit_dev);
|
1423 |
|
|
if (ud->ne != ne)
|
1424 |
|
|
continue;
|
1425 |
|
|
|
1426 |
|
|
drv = get_driver(ud->device.driver);
|
1427 |
|
|
if (!drv)
|
1428 |
|
|
continue;
|
1429 |
|
|
|
1430 |
|
|
if (drv->resume) {
|
1431 |
|
|
down(&ud->device.sem);
|
1432 |
|
|
drv->resume(&ud->device);
|
1433 |
|
|
up(&ud->device.sem);
|
1434 |
|
|
}
|
1435 |
|
|
put_driver(drv);
|
1436 |
|
|
}
|
1437 |
|
|
up(&nodemgr_ud_class.sem);
|
1438 |
|
|
|
1439 |
|
|
HPSB_DEBUG("Node resumed: ID:BUS[" NODE_BUS_FMT "] GUID[%016Lx]",
|
1440 |
|
|
NODE_BUS_ARGS(ne->host, ne->nodeid), (unsigned long long)ne->guid);
|
1441 |
|
|
}
|
1442 |
|
|
|
1443 |
|
|
|
1444 |
|
|
static void nodemgr_update_pdrv(struct node_entry *ne)
|
1445 |
|
|
{
|
1446 |
|
|
struct device *dev;
|
1447 |
|
|
struct unit_directory *ud;
|
1448 |
|
|
struct device_driver *drv;
|
1449 |
|
|
struct hpsb_protocol_driver *pdrv;
|
1450 |
|
|
int error;
|
1451 |
|
|
|
1452 |
|
|
down(&nodemgr_ud_class.sem);
|
1453 |
|
|
list_for_each_entry(dev, &nodemgr_ud_class.devices, node) {
|
1454 |
|
|
ud = container_of(dev, struct unit_directory, unit_dev);
|
1455 |
|
|
if (ud->ne != ne)
|
1456 |
|
|
continue;
|
1457 |
|
|
|
1458 |
|
|
drv = get_driver(ud->device.driver);
|
1459 |
|
|
if (!drv)
|
1460 |
|
|
continue;
|
1461 |
|
|
|
1462 |
|
|
error = 0;
|
1463 |
|
|
pdrv = container_of(drv, struct hpsb_protocol_driver, driver);
|
1464 |
|
|
if (pdrv->update) {
|
1465 |
|
|
down(&ud->device.sem);
|
1466 |
|
|
error = pdrv->update(ud);
|
1467 |
|
|
up(&ud->device.sem);
|
1468 |
|
|
}
|
1469 |
|
|
if (error)
|
1470 |
|
|
device_release_driver(&ud->device);
|
1471 |
|
|
put_driver(drv);
|
1472 |
|
|
}
|
1473 |
|
|
up(&nodemgr_ud_class.sem);
|
1474 |
|
|
}
|
1475 |
|
|
|
1476 |
|
|
|
1477 |
|
|
/* Write the BROADCAST_CHANNEL as per IEEE1394a 8.3.2.3.11 and 8.4.2.3. This
|
1478 |
|
|
* seems like an optional service but in the end it is practically mandatory
|
1479 |
|
|
* as a consequence of these clauses.
|
1480 |
|
|
*
|
1481 |
|
|
* Note that we cannot do a broadcast write to all nodes at once because some
|
1482 |
|
|
* pre-1394a devices would hang. */
|
1483 |
|
|
static void nodemgr_irm_write_bc(struct node_entry *ne, int generation)
|
1484 |
|
|
{
|
1485 |
|
|
const u64 bc_addr = (CSR_REGISTER_BASE | CSR_BROADCAST_CHANNEL);
|
1486 |
|
|
quadlet_t bc_remote, bc_local;
|
1487 |
|
|
int error;
|
1488 |
|
|
|
1489 |
|
|
if (!ne->host->is_irm || ne->generation != generation ||
|
1490 |
|
|
ne->nodeid == ne->host->node_id)
|
1491 |
|
|
return;
|
1492 |
|
|
|
1493 |
|
|
bc_local = cpu_to_be32(ne->host->csr.broadcast_channel);
|
1494 |
|
|
|
1495 |
|
|
/* Check if the register is implemented and 1394a compliant. */
|
1496 |
|
|
error = hpsb_read(ne->host, ne->nodeid, generation, bc_addr, &bc_remote,
|
1497 |
|
|
sizeof(bc_remote));
|
1498 |
|
|
if (!error && bc_remote & cpu_to_be32(0x80000000) &&
|
1499 |
|
|
bc_remote != bc_local)
|
1500 |
|
|
hpsb_node_write(ne, bc_addr, &bc_local, sizeof(bc_local));
|
1501 |
|
|
}
|
1502 |
|
|
|
1503 |
|
|
|
1504 |
|
|
static void nodemgr_probe_ne(struct host_info *hi, struct node_entry *ne, int generation)
|
1505 |
|
|
{
|
1506 |
|
|
struct device *dev;
|
1507 |
|
|
|
1508 |
|
|
if (ne->host != hi->host || ne->in_limbo)
|
1509 |
|
|
return;
|
1510 |
|
|
|
1511 |
|
|
dev = get_device(&ne->device);
|
1512 |
|
|
if (!dev)
|
1513 |
|
|
return;
|
1514 |
|
|
|
1515 |
|
|
nodemgr_irm_write_bc(ne, generation);
|
1516 |
|
|
|
1517 |
|
|
/* If "needs_probe", then this is either a new or changed node we
|
1518 |
|
|
* rescan totally. If the generation matches for an existing node
|
1519 |
|
|
* (one that existed prior to the bus reset) we send update calls
|
1520 |
|
|
* down to the drivers. Otherwise, this is a dead node and we
|
1521 |
|
|
* suspend it. */
|
1522 |
|
|
if (ne->needs_probe)
|
1523 |
|
|
nodemgr_process_root_directory(hi, ne);
|
1524 |
|
|
else if (ne->generation == generation)
|
1525 |
|
|
nodemgr_update_pdrv(ne);
|
1526 |
|
|
else
|
1527 |
|
|
nodemgr_suspend_ne(ne);
|
1528 |
|
|
|
1529 |
|
|
put_device(dev);
|
1530 |
|
|
}
|
1531 |
|
|
|
1532 |
|
|
|
1533 |
|
|
static void nodemgr_node_probe(struct host_info *hi, int generation)
|
1534 |
|
|
{
|
1535 |
|
|
struct hpsb_host *host = hi->host;
|
1536 |
|
|
struct device *dev;
|
1537 |
|
|
struct node_entry *ne;
|
1538 |
|
|
|
1539 |
|
|
/* Do some processing of the nodes we've probed. This pulls them
|
1540 |
|
|
* into the sysfs layer if needed, and can result in processing of
|
1541 |
|
|
* unit-directories, or just updating the node and it's
|
1542 |
|
|
* unit-directories.
|
1543 |
|
|
*
|
1544 |
|
|
* Run updates before probes. Usually, updates are time-critical
|
1545 |
|
|
* while probes are time-consuming. (Well, those probes need some
|
1546 |
|
|
* improvement...) */
|
1547 |
|
|
|
1548 |
|
|
down(&nodemgr_ne_class.sem);
|
1549 |
|
|
list_for_each_entry(dev, &nodemgr_ne_class.devices, node) {
|
1550 |
|
|
ne = container_of(dev, struct node_entry, node_dev);
|
1551 |
|
|
if (!ne->needs_probe)
|
1552 |
|
|
nodemgr_probe_ne(hi, ne, generation);
|
1553 |
|
|
}
|
1554 |
|
|
list_for_each_entry(dev, &nodemgr_ne_class.devices, node) {
|
1555 |
|
|
ne = container_of(dev, struct node_entry, node_dev);
|
1556 |
|
|
if (ne->needs_probe)
|
1557 |
|
|
nodemgr_probe_ne(hi, ne, generation);
|
1558 |
|
|
}
|
1559 |
|
|
up(&nodemgr_ne_class.sem);
|
1560 |
|
|
|
1561 |
|
|
|
1562 |
|
|
/* If we had a bus reset while we were scanning the bus, it is
|
1563 |
|
|
* possible that we did not probe all nodes. In that case, we
|
1564 |
|
|
* skip the clean up for now, since we could remove nodes that
|
1565 |
|
|
* were still on the bus. Another bus scan is pending which will
|
1566 |
|
|
* do the clean up eventually.
|
1567 |
|
|
*
|
1568 |
|
|
* Now let's tell the bus to rescan our devices. This may seem
|
1569 |
|
|
* like overhead, but the driver-model core will only scan a
|
1570 |
|
|
* device for a driver when either the device is added, or when a
|
1571 |
|
|
* new driver is added. A bus reset is a good reason to rescan
|
1572 |
|
|
* devices that were there before. For example, an sbp2 device
|
1573 |
|
|
* may become available for login, if the host that held it was
|
1574 |
|
|
* just removed. */
|
1575 |
|
|
|
1576 |
|
|
if (generation == get_hpsb_generation(host))
|
1577 |
|
|
if (bus_rescan_devices(&ieee1394_bus_type))
|
1578 |
|
|
HPSB_DEBUG("bus_rescan_devices had an error");
|
1579 |
|
|
}
|
1580 |
|
|
|
1581 |
|
|
static int nodemgr_send_resume_packet(struct hpsb_host *host)
|
1582 |
|
|
{
|
1583 |
|
|
struct hpsb_packet *packet;
|
1584 |
|
|
int error = -ENOMEM;
|
1585 |
|
|
|
1586 |
|
|
packet = hpsb_make_phypacket(host,
|
1587 |
|
|
EXTPHYPACKET_TYPE_RESUME |
|
1588 |
|
|
NODEID_TO_NODE(host->node_id) << PHYPACKET_PORT_SHIFT);
|
1589 |
|
|
if (packet) {
|
1590 |
|
|
packet->no_waiter = 1;
|
1591 |
|
|
packet->generation = get_hpsb_generation(host);
|
1592 |
|
|
error = hpsb_send_packet(packet);
|
1593 |
|
|
}
|
1594 |
|
|
if (error)
|
1595 |
|
|
HPSB_WARN("fw-host%d: Failed to broadcast resume packet",
|
1596 |
|
|
host->id);
|
1597 |
|
|
return error;
|
1598 |
|
|
}
|
1599 |
|
|
|
1600 |
|
|
/* Perform a few high-level IRM responsibilities. */
|
1601 |
|
|
static int nodemgr_do_irm_duties(struct hpsb_host *host, int cycles)
|
1602 |
|
|
{
|
1603 |
|
|
quadlet_t bc;
|
1604 |
|
|
|
1605 |
|
|
/* if irm_id == -1 then there is no IRM on this bus */
|
1606 |
|
|
if (!host->is_irm || host->irm_id == (nodeid_t)-1)
|
1607 |
|
|
return 1;
|
1608 |
|
|
|
1609 |
|
|
/* We are a 1394a-2000 compliant IRM. Set the validity bit. */
|
1610 |
|
|
host->csr.broadcast_channel |= 0x40000000;
|
1611 |
|
|
|
1612 |
|
|
/* If there is no bus manager then we should set the root node's
|
1613 |
|
|
* force_root bit to promote bus stability per the 1394
|
1614 |
|
|
* spec. (8.4.2.6) */
|
1615 |
|
|
if (host->busmgr_id == 0xffff && host->node_count > 1)
|
1616 |
|
|
{
|
1617 |
|
|
u16 root_node = host->node_count - 1;
|
1618 |
|
|
|
1619 |
|
|
/* get cycle master capability flag from root node */
|
1620 |
|
|
if (host->is_cycmst ||
|
1621 |
|
|
(!hpsb_read(host, LOCAL_BUS | root_node, get_hpsb_generation(host),
|
1622 |
|
|
(CSR_REGISTER_BASE + CSR_CONFIG_ROM + 2 * sizeof(quadlet_t)),
|
1623 |
|
|
&bc, sizeof(quadlet_t)) &&
|
1624 |
|
|
be32_to_cpu(bc) & 1 << CSR_CMC_SHIFT))
|
1625 |
|
|
hpsb_send_phy_config(host, root_node, -1);
|
1626 |
|
|
else {
|
1627 |
|
|
HPSB_DEBUG("The root node is not cycle master capable; "
|
1628 |
|
|
"selecting a new root node and resetting...");
|
1629 |
|
|
|
1630 |
|
|
if (cycles >= 5) {
|
1631 |
|
|
/* Oh screw it! Just leave the bus as it is */
|
1632 |
|
|
HPSB_DEBUG("Stopping reset loop for IRM sanity");
|
1633 |
|
|
return 1;
|
1634 |
|
|
}
|
1635 |
|
|
|
1636 |
|
|
hpsb_send_phy_config(host, NODEID_TO_NODE(host->node_id), -1);
|
1637 |
|
|
hpsb_reset_bus(host, LONG_RESET_FORCE_ROOT);
|
1638 |
|
|
|
1639 |
|
|
return 0;
|
1640 |
|
|
}
|
1641 |
|
|
}
|
1642 |
|
|
|
1643 |
|
|
/* Some devices suspend their ports while being connected to an inactive
|
1644 |
|
|
* host adapter, i.e. if connected before the low-level driver is
|
1645 |
|
|
* loaded. They become visible either when physically unplugged and
|
1646 |
|
|
* replugged, or when receiving a resume packet. Send one once. */
|
1647 |
|
|
if (!host->resume_packet_sent && !nodemgr_send_resume_packet(host))
|
1648 |
|
|
host->resume_packet_sent = 1;
|
1649 |
|
|
|
1650 |
|
|
return 1;
|
1651 |
|
|
}
|
1652 |
|
|
|
1653 |
|
|
/* We need to ensure that if we are not the IRM, that the IRM node is capable of
|
1654 |
|
|
* everything we can do, otherwise issue a bus reset and try to become the IRM
|
1655 |
|
|
* ourselves. */
|
1656 |
|
|
static int nodemgr_check_irm_capability(struct hpsb_host *host, int cycles)
|
1657 |
|
|
{
|
1658 |
|
|
quadlet_t bc;
|
1659 |
|
|
int status;
|
1660 |
|
|
|
1661 |
|
|
if (hpsb_disable_irm || host->is_irm)
|
1662 |
|
|
return 1;
|
1663 |
|
|
|
1664 |
|
|
status = hpsb_read(host, LOCAL_BUS | (host->irm_id),
|
1665 |
|
|
get_hpsb_generation(host),
|
1666 |
|
|
(CSR_REGISTER_BASE | CSR_BROADCAST_CHANNEL),
|
1667 |
|
|
&bc, sizeof(quadlet_t));
|
1668 |
|
|
|
1669 |
|
|
if (status < 0 || !(be32_to_cpu(bc) & 0x80000000)) {
|
1670 |
|
|
/* The current irm node does not have a valid BROADCAST_CHANNEL
|
1671 |
|
|
* register and we do, so reset the bus with force_root set */
|
1672 |
|
|
HPSB_DEBUG("Current remote IRM is not 1394a-2000 compliant, resetting...");
|
1673 |
|
|
|
1674 |
|
|
if (cycles >= 5) {
|
1675 |
|
|
/* Oh screw it! Just leave the bus as it is */
|
1676 |
|
|
HPSB_DEBUG("Stopping reset loop for IRM sanity");
|
1677 |
|
|
return 1;
|
1678 |
|
|
}
|
1679 |
|
|
|
1680 |
|
|
hpsb_send_phy_config(host, NODEID_TO_NODE(host->node_id), -1);
|
1681 |
|
|
hpsb_reset_bus(host, LONG_RESET_FORCE_ROOT);
|
1682 |
|
|
|
1683 |
|
|
return 0;
|
1684 |
|
|
}
|
1685 |
|
|
|
1686 |
|
|
return 1;
|
1687 |
|
|
}
|
1688 |
|
|
|
1689 |
|
|
static int nodemgr_host_thread(void *__hi)
|
1690 |
|
|
{
|
1691 |
|
|
struct host_info *hi = (struct host_info *)__hi;
|
1692 |
|
|
struct hpsb_host *host = hi->host;
|
1693 |
|
|
unsigned int g, generation = 0;
|
1694 |
|
|
int i, reset_cycles = 0;
|
1695 |
|
|
|
1696 |
|
|
set_freezable();
|
1697 |
|
|
/* Setup our device-model entries */
|
1698 |
|
|
nodemgr_create_host_dev_files(host);
|
1699 |
|
|
|
1700 |
|
|
for (;;) {
|
1701 |
|
|
/* Sleep until next bus reset */
|
1702 |
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
1703 |
|
|
if (get_hpsb_generation(host) == generation &&
|
1704 |
|
|
!kthread_should_stop())
|
1705 |
|
|
schedule();
|
1706 |
|
|
__set_current_state(TASK_RUNNING);
|
1707 |
|
|
|
1708 |
|
|
/* Thread may have been woken up to freeze or to exit */
|
1709 |
|
|
if (try_to_freeze())
|
1710 |
|
|
continue;
|
1711 |
|
|
if (kthread_should_stop())
|
1712 |
|
|
goto exit;
|
1713 |
|
|
|
1714 |
|
|
/* Pause for 1/4 second in 1/16 second intervals,
|
1715 |
|
|
* to make sure things settle down. */
|
1716 |
|
|
g = get_hpsb_generation(host);
|
1717 |
|
|
for (i = 0; i < 4 ; i++) {
|
1718 |
|
|
msleep_interruptible(63);
|
1719 |
|
|
if (kthread_should_stop())
|
1720 |
|
|
goto exit;
|
1721 |
|
|
|
1722 |
|
|
/* Now get the generation in which the node ID's we collect
|
1723 |
|
|
* are valid. During the bus scan we will use this generation
|
1724 |
|
|
* for the read transactions, so that if another reset occurs
|
1725 |
|
|
* during the scan the transactions will fail instead of
|
1726 |
|
|
* returning bogus data. */
|
1727 |
|
|
generation = get_hpsb_generation(host);
|
1728 |
|
|
|
1729 |
|
|
/* If we get a reset before we are done waiting, then
|
1730 |
|
|
* start the waiting over again */
|
1731 |
|
|
if (generation != g)
|
1732 |
|
|
g = generation, i = 0;
|
1733 |
|
|
}
|
1734 |
|
|
|
1735 |
|
|
if (!nodemgr_check_irm_capability(host, reset_cycles) ||
|
1736 |
|
|
!nodemgr_do_irm_duties(host, reset_cycles)) {
|
1737 |
|
|
reset_cycles++;
|
1738 |
|
|
continue;
|
1739 |
|
|
}
|
1740 |
|
|
reset_cycles = 0;
|
1741 |
|
|
|
1742 |
|
|
/* Scan our nodes to get the bus options and create node
|
1743 |
|
|
* entries. This does not do the sysfs stuff, since that
|
1744 |
|
|
* would trigger uevents and such, which is a bad idea at
|
1745 |
|
|
* this point. */
|
1746 |
|
|
nodemgr_node_scan(hi, generation);
|
1747 |
|
|
|
1748 |
|
|
/* This actually does the full probe, with sysfs
|
1749 |
|
|
* registration. */
|
1750 |
|
|
nodemgr_node_probe(hi, generation);
|
1751 |
|
|
|
1752 |
|
|
/* Update some of our sysfs symlinks */
|
1753 |
|
|
nodemgr_update_host_dev_links(host);
|
1754 |
|
|
}
|
1755 |
|
|
exit:
|
1756 |
|
|
HPSB_VERBOSE("NodeMgr: Exiting thread");
|
1757 |
|
|
return 0;
|
1758 |
|
|
}
|
1759 |
|
|
|
1760 |
|
|
/**
|
1761 |
|
|
* nodemgr_for_each_host - call a function for each IEEE 1394 host
|
1762 |
|
|
* @data: an address to supply to the callback
|
1763 |
|
|
* @cb: function to call for each host
|
1764 |
|
|
*
|
1765 |
|
|
* Iterate the hosts, calling a given function with supplied data for each host.
|
1766 |
|
|
* If the callback fails on a host, i.e. if it returns a non-zero value, the
|
1767 |
|
|
* iteration is stopped.
|
1768 |
|
|
*
|
1769 |
|
|
* Return value: 0 on success, non-zero on failure (same as returned by last run
|
1770 |
|
|
* of the callback).
|
1771 |
|
|
*/
|
1772 |
|
|
int nodemgr_for_each_host(void *data, int (*cb)(struct hpsb_host *, void *))
|
1773 |
|
|
{
|
1774 |
|
|
struct device *dev;
|
1775 |
|
|
struct hpsb_host *host;
|
1776 |
|
|
int error = 0;
|
1777 |
|
|
|
1778 |
|
|
down(&hpsb_host_class.sem);
|
1779 |
|
|
list_for_each_entry(dev, &hpsb_host_class.devices, node) {
|
1780 |
|
|
host = container_of(dev, struct hpsb_host, host_dev);
|
1781 |
|
|
|
1782 |
|
|
if ((error = cb(host, data)))
|
1783 |
|
|
break;
|
1784 |
|
|
}
|
1785 |
|
|
up(&hpsb_host_class.sem);
|
1786 |
|
|
|
1787 |
|
|
return error;
|
1788 |
|
|
}
|
1789 |
|
|
|
1790 |
|
|
/* The following two convenience functions use a struct node_entry
|
1791 |
|
|
* for addressing a node on the bus. They are intended for use by any
|
1792 |
|
|
* process context, not just the nodemgr thread, so we need to be a
|
1793 |
|
|
* little careful when reading out the node ID and generation. The
|
1794 |
|
|
* thing that can go wrong is that we get the node ID, then a bus
|
1795 |
|
|
* reset occurs, and then we read the generation. The node ID is
|
1796 |
|
|
* possibly invalid, but the generation is current, and we end up
|
1797 |
|
|
* sending a packet to a the wrong node.
|
1798 |
|
|
*
|
1799 |
|
|
* The solution is to make sure we read the generation first, so that
|
1800 |
|
|
* if a reset occurs in the process, we end up with a stale generation
|
1801 |
|
|
* and the transactions will fail instead of silently using wrong node
|
1802 |
|
|
* ID's.
|
1803 |
|
|
*/
|
1804 |
|
|
|
1805 |
|
|
/**
|
1806 |
|
|
* hpsb_node_fill_packet - fill some destination information into a packet
|
1807 |
|
|
* @ne: destination node
|
1808 |
|
|
* @packet: packet to fill in
|
1809 |
|
|
*
|
1810 |
|
|
* This will fill in the given, pre-initialised hpsb_packet with the current
|
1811 |
|
|
* information from the node entry (host, node ID, bus generation number).
|
1812 |
|
|
*/
|
1813 |
|
|
void hpsb_node_fill_packet(struct node_entry *ne, struct hpsb_packet *packet)
|
1814 |
|
|
{
|
1815 |
|
|
packet->host = ne->host;
|
1816 |
|
|
packet->generation = ne->generation;
|
1817 |
|
|
barrier();
|
1818 |
|
|
packet->node_id = ne->nodeid;
|
1819 |
|
|
}
|
1820 |
|
|
|
1821 |
|
|
int hpsb_node_write(struct node_entry *ne, u64 addr,
|
1822 |
|
|
quadlet_t *buffer, size_t length)
|
1823 |
|
|
{
|
1824 |
|
|
unsigned int generation = ne->generation;
|
1825 |
|
|
|
1826 |
|
|
barrier();
|
1827 |
|
|
return hpsb_write(ne->host, ne->nodeid, generation,
|
1828 |
|
|
addr, buffer, length);
|
1829 |
|
|
}
|
1830 |
|
|
|
1831 |
|
|
static void nodemgr_add_host(struct hpsb_host *host)
|
1832 |
|
|
{
|
1833 |
|
|
struct host_info *hi;
|
1834 |
|
|
|
1835 |
|
|
hi = hpsb_create_hostinfo(&nodemgr_highlevel, host, sizeof(*hi));
|
1836 |
|
|
if (!hi) {
|
1837 |
|
|
HPSB_ERR("NodeMgr: out of memory in add host");
|
1838 |
|
|
return;
|
1839 |
|
|
}
|
1840 |
|
|
hi->host = host;
|
1841 |
|
|
hi->thread = kthread_run(nodemgr_host_thread, hi, "knodemgrd_%d",
|
1842 |
|
|
host->id);
|
1843 |
|
|
if (IS_ERR(hi->thread)) {
|
1844 |
|
|
HPSB_ERR("NodeMgr: cannot start thread for host %d", host->id);
|
1845 |
|
|
hpsb_destroy_hostinfo(&nodemgr_highlevel, host);
|
1846 |
|
|
}
|
1847 |
|
|
}
|
1848 |
|
|
|
1849 |
|
|
static void nodemgr_host_reset(struct hpsb_host *host)
|
1850 |
|
|
{
|
1851 |
|
|
struct host_info *hi = hpsb_get_hostinfo(&nodemgr_highlevel, host);
|
1852 |
|
|
|
1853 |
|
|
if (hi) {
|
1854 |
|
|
HPSB_VERBOSE("NodeMgr: Processing reset for host %d", host->id);
|
1855 |
|
|
wake_up_process(hi->thread);
|
1856 |
|
|
}
|
1857 |
|
|
}
|
1858 |
|
|
|
1859 |
|
|
static void nodemgr_remove_host(struct hpsb_host *host)
|
1860 |
|
|
{
|
1861 |
|
|
struct host_info *hi = hpsb_get_hostinfo(&nodemgr_highlevel, host);
|
1862 |
|
|
|
1863 |
|
|
if (hi) {
|
1864 |
|
|
kthread_stop(hi->thread);
|
1865 |
|
|
nodemgr_remove_host_dev(&host->device);
|
1866 |
|
|
}
|
1867 |
|
|
}
|
1868 |
|
|
|
1869 |
|
|
static struct hpsb_highlevel nodemgr_highlevel = {
|
1870 |
|
|
.name = "Node manager",
|
1871 |
|
|
.add_host = nodemgr_add_host,
|
1872 |
|
|
.host_reset = nodemgr_host_reset,
|
1873 |
|
|
.remove_host = nodemgr_remove_host,
|
1874 |
|
|
};
|
1875 |
|
|
|
1876 |
|
|
int init_ieee1394_nodemgr(void)
|
1877 |
|
|
{
|
1878 |
|
|
int error;
|
1879 |
|
|
|
1880 |
|
|
error = class_register(&nodemgr_ne_class);
|
1881 |
|
|
if (error)
|
1882 |
|
|
goto fail_ne;
|
1883 |
|
|
error = class_register(&nodemgr_ud_class);
|
1884 |
|
|
if (error)
|
1885 |
|
|
goto fail_ud;
|
1886 |
|
|
error = driver_register(&nodemgr_mid_layer_driver);
|
1887 |
|
|
if (error)
|
1888 |
|
|
goto fail_ml;
|
1889 |
|
|
/* This driver is not used if nodemgr is off (disable_nodemgr=1). */
|
1890 |
|
|
nodemgr_dev_template_host.driver = &nodemgr_mid_layer_driver;
|
1891 |
|
|
|
1892 |
|
|
hpsb_register_highlevel(&nodemgr_highlevel);
|
1893 |
|
|
return 0;
|
1894 |
|
|
|
1895 |
|
|
fail_ml:
|
1896 |
|
|
class_unregister(&nodemgr_ud_class);
|
1897 |
|
|
fail_ud:
|
1898 |
|
|
class_unregister(&nodemgr_ne_class);
|
1899 |
|
|
fail_ne:
|
1900 |
|
|
return error;
|
1901 |
|
|
}
|
1902 |
|
|
|
1903 |
|
|
void cleanup_ieee1394_nodemgr(void)
|
1904 |
|
|
{
|
1905 |
|
|
hpsb_unregister_highlevel(&nodemgr_highlevel);
|
1906 |
|
|
driver_unregister(&nodemgr_mid_layer_driver);
|
1907 |
|
|
class_unregister(&nodemgr_ud_class);
|
1908 |
|
|
class_unregister(&nodemgr_ne_class);
|
1909 |
|
|
}
|