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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [ieee1394/] [highlevel.c] - Blame information for rev 1275

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/*
 * IEEE 1394 for Linux
 *
 * Copyright (C) 1999 Andreas E. Bombe
 *
 * This code is licensed under the GPL.  See the file COPYING in the root
 * directory of the kernel sources for details.
 *
 *
 * Contributions:
 *
 * Christian Toegel <christian.toegel@gmx.at>
 *        unregister address space
 *
 * Manfred Weihs <weihs@ict.tuwien.ac.at>
 *        unregister address space
 *
 */
 
#include <linux/config.h>
#include <linux/slab.h>
#include <linux/list.h>
 
#include "ieee1394.h"
#include "ieee1394_types.h"
#include "hosts.h"
#include "ieee1394_core.h"
#include "highlevel.h"
 
 
struct hl_host_info {
        struct list_head list;
        struct hpsb_host *host;
        size_t size;
        unsigned long key;
        void *data;
};
 
 
static LIST_HEAD(hl_drivers);
static rwlock_t hl_drivers_lock = RW_LOCK_UNLOCKED;
 
static LIST_HEAD(addr_space);
static rwlock_t addr_space_lock = RW_LOCK_UNLOCKED;
 
/* addr_space list will have zero and max already included as bounds */
static struct hpsb_address_ops dummy_ops = { NULL, NULL, NULL, NULL };
static struct hpsb_address_serve dummy_zero_addr, dummy_max_addr;
 
 
static struct hl_host_info *hl_get_hostinfo(struct hpsb_highlevel *hl,
                                              struct hpsb_host *host)
{
        struct hl_host_info *hi = NULL;
        struct list_head *lh;
 
        if (!hl || !host)
                return NULL;
 
        read_lock(&hl->host_info_lock);
        list_for_each (lh, &hl->host_info_list) {
                hi = list_entry(lh, struct hl_host_info, list);
                if (hi->host == host)
                        break;
                hi = NULL;
        }
        read_unlock(&hl->host_info_lock);
 
        return hi;
}
 
 
/* Returns a per host/driver data structure that was previously stored by
 * hpsb_create_hostinfo. */
void *hpsb_get_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host)
{
        struct hl_host_info *hi = hl_get_hostinfo(hl, host);
 
        if (hi)
                return hi->data;
 
        return NULL;
}
 
 
/* If size is zero, then the return here is only valid for error checking */
void *hpsb_create_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host,
                           size_t data_size)
{
        struct hl_host_info *hi;
        void *data;
        unsigned long flags;
 
        hi = hl_get_hostinfo(hl, host);
        if (hi) {
                HPSB_ERR("%s called hpsb_create_hostinfo when hostinfo already exists",
                         hl->name);
                return NULL;
        }
 
        hi = kmalloc(sizeof(*hi) + data_size, GFP_KERNEL);
        if (!hi)
                return NULL;
 
        memset(hi, 0, sizeof(*hi) + data_size);
 
        if (data_size) {
                data = hi->data = hi + 1;
                hi->size = data_size;
        } else
                data = hi;
 
        hi->host = host;
 
        write_lock_irqsave(&hl->host_info_lock, flags);
        list_add_tail(&hi->list, &hl->host_info_list);
        write_unlock_irqrestore(&hl->host_info_lock, flags);
 
        return data;
}
 
 
int hpsb_set_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host,
                      void *data)
{
        struct hl_host_info *hi;
 
        hi = hl_get_hostinfo(hl, host);
        if (hi) {
                if (!hi->size && !hi->data) {
                        hi->data = data;
                        return 0;
                } else
                        HPSB_ERR("%s called hpsb_set_hostinfo when hostinfo already has data",
                                 hl->name);
        } else
                HPSB_ERR("%s called hpsb_set_hostinfo when no hostinfo exists",
                         hl->name);
 
        return -EINVAL;
}
 
 
void hpsb_destroy_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host)
{
        struct hl_host_info *hi;
 
        hi = hl_get_hostinfo(hl, host);
        if (hi) {
                unsigned long flags;
                write_lock_irqsave(&hl->host_info_lock, flags);
                list_del(&hi->list);
                write_unlock_irqrestore(&hl->host_info_lock, flags);
                kfree(hi);
        }
 
        return;
}
 
 
void hpsb_set_hostinfo_key(struct hpsb_highlevel *hl, struct hpsb_host *host, unsigned long key)
{
        struct hl_host_info *hi;
 
        hi = hl_get_hostinfo(hl, host);
        if (hi)
                hi->key = key;
 
        return;
}
 
 
unsigned long hpsb_get_hostinfo_key(struct hpsb_highlevel *hl, struct hpsb_host *host)
{
        struct hl_host_info *hi;
 
        hi = hl_get_hostinfo(hl, host);
        if (hi)
                return hi->key;
 
        return 0;
}
 
 
void *hpsb_get_hostinfo_bykey(struct hpsb_highlevel *hl, unsigned long key)
{
        struct list_head *lh;
        struct hl_host_info *hi;
        void *data = NULL;
 
        if (!hl)
                return NULL;
 
        read_lock(&hl->host_info_lock);
        list_for_each (lh, &hl->host_info_list) {
                hi = list_entry(lh, struct hl_host_info, list);
                if (hi->key == key) {
                        data = hi->data;
                        break;
                }
        }
        read_unlock(&hl->host_info_lock);
 
        return data;
}
 
 
struct hpsb_host *hpsb_get_host_bykey(struct hpsb_highlevel *hl, unsigned long key)
{
        struct list_head *lh;
        struct hl_host_info *hi;
        struct hpsb_host *host = NULL;
 
        if (!hl)
                return NULL;
 
        read_lock(&hl->host_info_lock);
        list_for_each (lh, &hl->host_info_list) {
                hi = list_entry(lh, struct hl_host_info, list);
                if (hi->key == key) {
                        host = hi->host;
                        break;
                }
        }
        read_unlock(&hl->host_info_lock);
 
        return host;
}
 
 
void hpsb_register_highlevel(struct hpsb_highlevel *hl)
{
        struct list_head *lh;
        unsigned long flags;
 
        INIT_LIST_HEAD(&hl->addr_list);
        INIT_LIST_HEAD(&hl->host_info_list);
 
        rwlock_init(&hl->host_info_lock);
 
        write_lock_irqsave(&hl_drivers_lock, flags);
        list_add_tail(&hl->hl_list, &hl_drivers);
        write_unlock_irqrestore(&hl_drivers_lock, flags);
 
        if (hl->add_host) {
                down(&hpsb_hosts_lock);
                list_for_each (lh, &hpsb_hosts) {
                        struct hpsb_host *host = list_entry(lh, struct hpsb_host, host_list);
                        hl->add_host(host);
                }
                up(&hpsb_hosts_lock);
        }
 
        return;
}
 
void hpsb_unregister_highlevel(struct hpsb_highlevel *hl)
{
        struct list_head *lh, *next;
        struct hpsb_address_serve *as;
        unsigned long flags;
 
        write_lock_irqsave(&addr_space_lock, flags);
        list_for_each_safe (lh, next, &hl->addr_list) {
                as = list_entry(lh, struct hpsb_address_serve, addr_list);
                list_del(&as->as_list);
                kfree(as);
        }
        write_unlock_irqrestore(&addr_space_lock, flags);
 
        write_lock_irqsave(&hl_drivers_lock, flags);
        list_del(&hl->hl_list);
        write_unlock_irqrestore(&hl_drivers_lock, flags);
 
        if (hl->remove_host) {
                down(&hpsb_hosts_lock);
                list_for_each(lh, &hpsb_hosts) {
                        struct hpsb_host *host = list_entry(lh, struct hpsb_host, host_list);
 
                        hl->remove_host(host);
                        hpsb_destroy_hostinfo(hl, host);
                }
                up(&hpsb_hosts_lock);
        }
}
 
int hpsb_register_addrspace(struct hpsb_highlevel *hl,
                            struct hpsb_address_ops *ops, u64 start, u64 end)
{
        struct hpsb_address_serve *as;
        struct list_head *entry;
        int retval = 0;
        unsigned long flags;
 
        if (((start|end) & 3) || (start >= end) || (end > 0x1000000000000ULL)) {
                HPSB_ERR("%s called with invalid addresses", __FUNCTION__);
                return 0;
        }
 
        as = (struct hpsb_address_serve *)
                kmalloc(sizeof(struct hpsb_address_serve), GFP_KERNEL);
        if (as == NULL) {
                return 0;
        }
 
        INIT_LIST_HEAD(&as->as_list);
        INIT_LIST_HEAD(&as->addr_list);
        as->op = ops;
        as->start = start;
        as->end = end;
 
        write_lock_irqsave(&addr_space_lock, flags);
        entry = addr_space.next;
 
        while (list_entry(entry, struct hpsb_address_serve, as_list)->end
               <= start) {
                if (list_entry(entry->next, struct hpsb_address_serve, as_list)
                    ->start >= end) {
                        list_add(&as->as_list, entry);
                        list_add_tail(&as->addr_list, &hl->addr_list);
                        retval = 1;
                        break;
                }
                entry = entry->next;
        }
        write_unlock_irqrestore(&addr_space_lock, flags);
 
        if (retval == 0) {
                kfree(as);
        }
 
        return retval;
}
 
int hpsb_unregister_addrspace(struct hpsb_highlevel *hl, u64 start)
{
        int retval = 0;
        struct hpsb_address_serve *as;
        struct list_head *entry;
        unsigned long flags;
 
        write_lock_irqsave(&addr_space_lock, flags);
 
        entry = hl->addr_list.next;
 
        while (entry != &hl->addr_list) {
                as = list_entry(entry, struct hpsb_address_serve, addr_list);
                entry = entry->next;
                if (as->start == start) {
                        list_del(&as->as_list);
                        list_del(&as->addr_list);
                        kfree(as);
                        retval = 1;
                        break;
                }
        }
 
        write_unlock_irqrestore(&addr_space_lock, flags);
 
        return retval;
}
 
int hpsb_listen_channel(struct hpsb_highlevel *hl, struct hpsb_host *host,
                         unsigned int channel)
{
        if (channel > 63) {
                HPSB_ERR("%s called with invalid channel", __FUNCTION__);
                return -EINVAL;
        }
 
        if (host->iso_listen_count[channel]++ == 0) {
                return host->driver->devctl(host, ISO_LISTEN_CHANNEL, channel);
        }
 
        return 0;
}
 
void hpsb_unlisten_channel(struct hpsb_highlevel *hl, struct hpsb_host *host,
                           unsigned int channel)
{
        if (channel > 63) {
                HPSB_ERR("%s called with invalid channel", __FUNCTION__);
                return;
        }
 
        if (--host->iso_listen_count[channel] == 0) {
                host->driver->devctl(host, ISO_UNLISTEN_CHANNEL, channel);
        }
}
 
 
void highlevel_add_host(struct hpsb_host *host)
{
        struct list_head *entry;
        struct hpsb_highlevel *hl;
 
        read_lock(&hl_drivers_lock);
        list_for_each(entry, &hl_drivers) {
                hl = list_entry(entry, struct hpsb_highlevel, hl_list);
                if (hl->add_host)
                        hl->add_host(host);
        }
        read_unlock(&hl_drivers_lock);
}
 
void highlevel_remove_host(struct hpsb_host *host)
{
        struct list_head *entry;
        struct hpsb_highlevel *hl;
 
        read_lock(&hl_drivers_lock);
        list_for_each(entry, &hl_drivers) {
                hl = list_entry(entry, struct hpsb_highlevel, hl_list);
 
                if (hl->remove_host) {
                        hl->remove_host(host);
                        hpsb_destroy_hostinfo(hl, host);
                }
        }
        read_unlock(&hl_drivers_lock);
}
 
void highlevel_host_reset(struct hpsb_host *host)
{
        struct list_head *entry;
        struct hpsb_highlevel *hl;
 
        read_lock(&hl_drivers_lock);
        list_for_each(entry, &hl_drivers) {
                hl = list_entry(entry, struct hpsb_highlevel, hl_list);
 
                if (hl->host_reset)
                        hl->host_reset(host);
        }
        read_unlock(&hl_drivers_lock);
}
 
void highlevel_iso_receive(struct hpsb_host *host, void *data,
                           size_t length)
{
        struct list_head *entry;
        struct hpsb_highlevel *hl;
        int channel = (((quadlet_t *)data)[0] >> 8) & 0x3f;
 
        read_lock(&hl_drivers_lock);
        entry = hl_drivers.next;
 
        while (entry != &hl_drivers) {
                hl = list_entry(entry, struct hpsb_highlevel, hl_list);
                if (hl->iso_receive) {
                        hl->iso_receive(host, channel, data, length);
                }
                entry = entry->next;
        }
        read_unlock(&hl_drivers_lock);
}
 
void highlevel_fcp_request(struct hpsb_host *host, int nodeid, int direction,
                           void *data, size_t length)
{
        struct list_head *entry;
        struct hpsb_highlevel *hl;
        int cts = ((quadlet_t *)data)[0] >> 4;
 
        read_lock(&hl_drivers_lock);
        entry = hl_drivers.next;
 
        while (entry != &hl_drivers) {
                hl = list_entry(entry, struct hpsb_highlevel, hl_list);
                if (hl->fcp_request) {
                        hl->fcp_request(host, nodeid, direction, cts, data,
                                            length);
                }
                entry = entry->next;
        }
        read_unlock(&hl_drivers_lock);
}
 
int highlevel_read(struct hpsb_host *host, int nodeid, void *data,
                   u64 addr, unsigned int length, u16 flags)
{
        struct hpsb_address_serve *as;
        struct list_head *entry;
        unsigned int partlength;
        int rcode = RCODE_ADDRESS_ERROR;
 
        read_lock(&addr_space_lock);
 
        entry = addr_space.next;
        as = list_entry(entry, struct hpsb_address_serve, as_list);
 
        while (as->start <= addr) {
                if (as->end > addr) {
                        partlength = min(as->end - addr, (u64) length);
 
                        if (as->op->read) {
                                rcode = as->op->read(host, nodeid, data,
                                                     addr, partlength, flags);
                        } else {
                                rcode = RCODE_TYPE_ERROR;
                        }
 
                        (u8 *)data += partlength;
                        length -= partlength;
                        addr += partlength;
 
                        if ((rcode != RCODE_COMPLETE) || !length) {
                                break;
                        }
                }
 
                entry = entry->next;
                as = list_entry(entry, struct hpsb_address_serve, as_list);
        }
 
        read_unlock(&addr_space_lock);
 
        if (length && (rcode == RCODE_COMPLETE)) {
                rcode = RCODE_ADDRESS_ERROR;
        }
 
        return rcode;
}
 
int highlevel_write(struct hpsb_host *host, int nodeid, int destid,
                    void *data, u64 addr, unsigned int length, u16 flags)
{
        struct hpsb_address_serve *as;
        struct list_head *entry;
        unsigned int partlength;
        int rcode = RCODE_ADDRESS_ERROR;
 
        read_lock(&addr_space_lock);
 
        entry = addr_space.next;
        as = list_entry(entry, struct hpsb_address_serve, as_list);
 
        while (as->start <= addr) {
                if (as->end > addr) {
                        partlength = min(as->end - addr, (u64) length);
 
                        if (as->op->write) {
                                rcode = as->op->write(host, nodeid, destid,
                                                      data, addr, partlength, flags);
                        } else {
                                rcode = RCODE_TYPE_ERROR;
                        }
 
                        (u8 *)data += partlength;
                        length -= partlength;
                        addr += partlength;
 
                        if ((rcode != RCODE_COMPLETE) || !length) {
                                break;
                        }
                }
 
                entry = entry->next;
                as = list_entry(entry, struct hpsb_address_serve, as_list);
        }
 
        read_unlock(&addr_space_lock);
 
        if (length && (rcode == RCODE_COMPLETE)) {
                rcode = RCODE_ADDRESS_ERROR;
        }
 
        return rcode;
}
 
 
int highlevel_lock(struct hpsb_host *host, int nodeid, quadlet_t *store,
                   u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, u16 flags)
{
        struct hpsb_address_serve *as;
        struct list_head *entry;
        int rcode = RCODE_ADDRESS_ERROR;
 
        read_lock(&addr_space_lock);
 
        entry = addr_space.next;
        as = list_entry(entry, struct hpsb_address_serve, as_list);
 
        while (as->start <= addr) {
                if (as->end > addr) {
                        if (as->op->lock) {
                                rcode = as->op->lock(host, nodeid, store, addr,
                                                     data, arg, ext_tcode, flags);
                        } else {
                                rcode = RCODE_TYPE_ERROR;
                        }
 
                        break;
                }
 
                entry = entry->next;
                as = list_entry(entry, struct hpsb_address_serve, as_list);
        }
 
        read_unlock(&addr_space_lock);
 
        return rcode;
}
 
int highlevel_lock64(struct hpsb_host *host, int nodeid, octlet_t *store,
                     u64 addr, octlet_t data, octlet_t arg, int ext_tcode, u16 flags)
{
        struct hpsb_address_serve *as;
        struct list_head *entry;
        int rcode = RCODE_ADDRESS_ERROR;
 
        read_lock(&addr_space_lock);
 
        entry = addr_space.next;
        as = list_entry(entry, struct hpsb_address_serve, as_list);
 
        while (as->start <= addr) {
                if (as->end > addr) {
                        if (as->op->lock64) {
                                rcode = as->op->lock64(host, nodeid, store,
                                                       addr, data, arg,
                                                       ext_tcode, flags);
                        } else {
                                rcode = RCODE_TYPE_ERROR;
                        }
 
                        break;
                }
 
                entry = entry->next;
                as = list_entry(entry, struct hpsb_address_serve, as_list);
        }
 
        read_unlock(&addr_space_lock);
 
        return rcode;
}
 
void init_hpsb_highlevel(void)
{
        INIT_LIST_HEAD(&dummy_zero_addr.as_list);
        INIT_LIST_HEAD(&dummy_zero_addr.addr_list);
        INIT_LIST_HEAD(&dummy_max_addr.as_list);
        INIT_LIST_HEAD(&dummy_max_addr.addr_list);
 
        dummy_zero_addr.op = dummy_max_addr.op = &dummy_ops;
 
        dummy_zero_addr.start = dummy_zero_addr.end = 0;
        dummy_max_addr.start = dummy_max_addr.end = ((u64) 1) << 48;
 
        list_add_tail(&dummy_zero_addr.as_list, &addr_space);
        list_add_tail(&dummy_max_addr.as_list, &addr_space);
}

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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [ieee1394/] [highlevel.c] - Blame information for rev 1275

Line No.	Rev	Author	Line
1	1275	phoenix	`/*`
2			`* IEEE 1394 for Linux`
3			`*`
4			`* Copyright (C) 1999 Andreas E. Bombe`
5			`*`
6			`* This code is licensed under the GPL. See the file COPYING in the root`
7			`* directory of the kernel sources for details.`
8			`*`
9			`*`
10			`* Contributions:`
11			`*`
12			`* Christian Toegel <christian.toegel@gmx.at>`
13			`* unregister address space`
14			`*`
15			`* Manfred Weihs <weihs@ict.tuwien.ac.at>`
16			`* unregister address space`
17			`*`
18			`*/`
19
20			`#include <linux/config.h>`
21			`#include <linux/slab.h>`
22			`#include <linux/list.h>`
23
24			`#include "ieee1394.h"`
25			`#include "ieee1394_types.h"`
26			`#include "hosts.h"`
27			`#include "ieee1394_core.h"`
28			`#include "highlevel.h"`
29
30
31			`struct hl_host_info {`
32			`struct list_head list;`
33			`struct hpsb_host *host;`
34			`size_t size;`
35			`unsigned long key;`
36			`void *data;`
37			`};`
38
39
40			`static LIST_HEAD(hl_drivers);`
41			`static rwlock_t hl_drivers_lock = RW_LOCK_UNLOCKED;`
42
43			`static LIST_HEAD(addr_space);`
44			`static rwlock_t addr_space_lock = RW_LOCK_UNLOCKED;`
45
46			`/* addr_space list will have zero and max already included as bounds */`
47			`static struct hpsb_address_ops dummy_ops = { NULL, NULL, NULL, NULL };`
48			`static struct hpsb_address_serve dummy_zero_addr, dummy_max_addr;`
49
50
51			`static struct hl_host_info hl_get_hostinfo(struct hpsb_highlevel hl,`
52			`struct hpsb_host *host)`
53			`{`
54			`struct hl_host_info *hi = NULL;`
55			`struct list_head *lh;`
56
57			`if (!hl \|\| !host)`
58			`return NULL;`
59
60			`read_lock(&hl->host_info_lock);`
61			`list_for_each (lh, &hl->host_info_list) {`
62			`hi = list_entry(lh, struct hl_host_info, list);`
63			`if (hi->host == host)`
64			`break;`
65			`hi = NULL;`
66			`}`
67			`read_unlock(&hl->host_info_lock);`
68
69			`return hi;`
70			`}`
71
72
73			`/* Returns a per host/driver data structure that was previously stored by`
74			`* hpsb_create_hostinfo. */`
75			`void hpsb_get_hostinfo(struct hpsb_highlevel hl, struct hpsb_host *host)`
76			`{`
77			`struct hl_host_info *hi = hl_get_hostinfo(hl, host);`
78
79			`if (hi)`
80			`return hi->data;`
81
82			`return NULL;`
83			`}`
84
85
86			`/* If size is zero, then the return here is only valid for error checking */`
87			`void hpsb_create_hostinfo(struct hpsb_highlevel hl, struct hpsb_host *host,`
88			`size_t data_size)`
89			`{`
90			`struct hl_host_info *hi;`
91			`void *data;`
92			`unsigned long flags;`
93
94			`hi = hl_get_hostinfo(hl, host);`
95			`if (hi) {`
96			`HPSB_ERR("%s called hpsb_create_hostinfo when hostinfo already exists",`
97			`hl->name);`
98			`return NULL;`
99			`}`
100
101			`hi = kmalloc(sizeof(*hi) + data_size, GFP_KERNEL);`
102			`if (!hi)`
103			`return NULL;`
104
105			`memset(hi, 0, sizeof(*hi) + data_size);`
106
107			`if (data_size) {`
108			`data = hi->data = hi + 1;`
109			`hi->size = data_size;`
110			`} else`
111			`data = hi;`
112
113			`hi->host = host;`
114
115			`write_lock_irqsave(&hl->host_info_lock, flags);`
116			`list_add_tail(&hi->list, &hl->host_info_list);`
117			`write_unlock_irqrestore(&hl->host_info_lock, flags);`
118
119			`return data;`
120			`}`
121
122
123			`int hpsb_set_hostinfo(struct hpsb_highlevel hl, struct hpsb_host host,`
124			`void *data)`
125			`{`
126			`struct hl_host_info *hi;`
127
128			`hi = hl_get_hostinfo(hl, host);`
129			`if (hi) {`
130			`if (!hi->size && !hi->data) {`
131			`hi->data = data;`
132			`return 0;`
133			`} else`
134			`HPSB_ERR("%s called hpsb_set_hostinfo when hostinfo already has data",`
135			`hl->name);`
136			`} else`
137			`HPSB_ERR("%s called hpsb_set_hostinfo when no hostinfo exists",`
138			`hl->name);`
139
140			`return -EINVAL;`
141			`}`
142
143
144			`void hpsb_destroy_hostinfo(struct hpsb_highlevel hl, struct hpsb_host host)`
145			`{`
146			`struct hl_host_info *hi;`
147
148			`hi = hl_get_hostinfo(hl, host);`
149			`if (hi) {`
150			`unsigned long flags;`
151			`write_lock_irqsave(&hl->host_info_lock, flags);`
152			`list_del(&hi->list);`
153			`write_unlock_irqrestore(&hl->host_info_lock, flags);`
154			`kfree(hi);`
155			`}`
156
157			`return;`
158			`}`
159
160
161			`void hpsb_set_hostinfo_key(struct hpsb_highlevel hl, struct hpsb_host host, unsigned long key)`
162			`{`
163			`struct hl_host_info *hi;`
164
165			`hi = hl_get_hostinfo(hl, host);`
166			`if (hi)`
167			`hi->key = key;`
168
169			`return;`
170			`}`
171
172
173			`unsigned long hpsb_get_hostinfo_key(struct hpsb_highlevel hl, struct hpsb_host host)`
174			`{`
175			`struct hl_host_info *hi;`
176
177			`hi = hl_get_hostinfo(hl, host);`
178			`if (hi)`
179			`return hi->key;`
180
181			`return 0;`
182			`}`
183
184
185			`void hpsb_get_hostinfo_bykey(struct hpsb_highlevel hl, unsigned long key)`
186			`{`
187			`struct list_head *lh;`
188			`struct hl_host_info *hi;`
189			`void *data = NULL;`
190
191			`if (!hl)`
192			`return NULL;`
193
194			`read_lock(&hl->host_info_lock);`
195			`list_for_each (lh, &hl->host_info_list) {`
196			`hi = list_entry(lh, struct hl_host_info, list);`
197			`if (hi->key == key) {`
198			`data = hi->data;`
199			`break;`
200			`}`
201			`}`
202			`read_unlock(&hl->host_info_lock);`
203
204			`return data;`
205			`}`
206
207
208			`struct hpsb_host hpsb_get_host_bykey(struct hpsb_highlevel hl, unsigned long key)`
209			`{`
210			`struct list_head *lh;`
211			`struct hl_host_info *hi;`
212			`struct hpsb_host *host = NULL;`
213
214			`if (!hl)`
215			`return NULL;`
216
217			`read_lock(&hl->host_info_lock);`
218			`list_for_each (lh, &hl->host_info_list) {`
219			`hi = list_entry(lh, struct hl_host_info, list);`
220			`if (hi->key == key) {`
221			`host = hi->host;`
222			`break;`
223			`}`
224			`}`
225			`read_unlock(&hl->host_info_lock);`
226
227			`return host;`
228			`}`
229
230
231			`void hpsb_register_highlevel(struct hpsb_highlevel *hl)`
232			`{`
233			`struct list_head *lh;`
234			`unsigned long flags;`
235
236			`INIT_LIST_HEAD(&hl->addr_list);`
237			`INIT_LIST_HEAD(&hl->host_info_list);`
238
239			`rwlock_init(&hl->host_info_lock);`
240
241			`write_lock_irqsave(&hl_drivers_lock, flags);`
242			`list_add_tail(&hl->hl_list, &hl_drivers);`
243			`write_unlock_irqrestore(&hl_drivers_lock, flags);`
244
245			`if (hl->add_host) {`
246			`down(&hpsb_hosts_lock);`
247			`list_for_each (lh, &hpsb_hosts) {`
248			`struct hpsb_host *host = list_entry(lh, struct hpsb_host, host_list);`
249			`hl->add_host(host);`
250			`}`
251			`up(&hpsb_hosts_lock);`
252			`}`
253
254			`return;`
255			`}`
256
257			`void hpsb_unregister_highlevel(struct hpsb_highlevel *hl)`
258			`{`
259			`struct list_head lh, next;`
260			`struct hpsb_address_serve *as;`
261			`unsigned long flags;`
262
263			`write_lock_irqsave(&addr_space_lock, flags);`
264			`list_for_each_safe (lh, next, &hl->addr_list) {`
265			`as = list_entry(lh, struct hpsb_address_serve, addr_list);`
266			`list_del(&as->as_list);`
267			`kfree(as);`
268			`}`
269			`write_unlock_irqrestore(&addr_space_lock, flags);`
270
271			`write_lock_irqsave(&hl_drivers_lock, flags);`
272			`list_del(&hl->hl_list);`
273			`write_unlock_irqrestore(&hl_drivers_lock, flags);`
274
275			`if (hl->remove_host) {`
276			`down(&hpsb_hosts_lock);`
277			`list_for_each(lh, &hpsb_hosts) {`
278			`struct hpsb_host *host = list_entry(lh, struct hpsb_host, host_list);`
279
280			`hl->remove_host(host);`
281			`hpsb_destroy_hostinfo(hl, host);`
282			`}`
283			`up(&hpsb_hosts_lock);`
284			`}`
285			`}`
286
287			`int hpsb_register_addrspace(struct hpsb_highlevel *hl,`
288			`struct hpsb_address_ops *ops, u64 start, u64 end)`
289			`{`
290			`struct hpsb_address_serve *as;`
291			`struct list_head *entry;`
292			`int retval = 0;`
293			`unsigned long flags;`
294
295			`if (((start\|end) & 3) \|\| (start >= end) \|\| (end > 0x1000000000000ULL)) {`
296			`HPSB_ERR("%s called with invalid addresses", __FUNCTION__);`
297			`return 0;`
298			`}`
299
300			`as = (struct hpsb_address_serve *)`
301			`kmalloc(sizeof(struct hpsb_address_serve), GFP_KERNEL);`
302			`if (as == NULL) {`
303			`return 0;`
304			`}`
305
306			`INIT_LIST_HEAD(&as->as_list);`
307			`INIT_LIST_HEAD(&as->addr_list);`
308			`as->op = ops;`
309			`as->start = start;`
310			`as->end = end;`
311
312			`write_lock_irqsave(&addr_space_lock, flags);`
313			`entry = addr_space.next;`
314
315			`while (list_entry(entry, struct hpsb_address_serve, as_list)->end`
316			`<= start) {`
317			`if (list_entry(entry->next, struct hpsb_address_serve, as_list)`
318			`->start >= end) {`
319			`list_add(&as->as_list, entry);`
320			`list_add_tail(&as->addr_list, &hl->addr_list);`
321			`retval = 1;`
322			`break;`
323			`}`
324			`entry = entry->next;`
325			`}`
326			`write_unlock_irqrestore(&addr_space_lock, flags);`
327
328			`if (retval == 0) {`
329			`kfree(as);`
330			`}`
331
332			`return retval;`
333			`}`
334
335			`int hpsb_unregister_addrspace(struct hpsb_highlevel *hl, u64 start)`
336			`{`
337			`int retval = 0;`
338			`struct hpsb_address_serve *as;`
339			`struct list_head *entry;`
340			`unsigned long flags;`
341
342			`write_lock_irqsave(&addr_space_lock, flags);`
343
344			`entry = hl->addr_list.next;`
345
346			`while (entry != &hl->addr_list) {`
347			`as = list_entry(entry, struct hpsb_address_serve, addr_list);`
348			`entry = entry->next;`
349			`if (as->start == start) {`
350			`list_del(&as->as_list);`
351			`list_del(&as->addr_list);`
352			`kfree(as);`
353			`retval = 1;`
354			`break;`
355			`}`
356			`}`
357
358			`write_unlock_irqrestore(&addr_space_lock, flags);`
359
360			`return retval;`
361			`}`
362
363			`int hpsb_listen_channel(struct hpsb_highlevel hl, struct hpsb_host host,`
364			`unsigned int channel)`
365			`{`
366			`if (channel > 63) {`
367			`HPSB_ERR("%s called with invalid channel", __FUNCTION__);`
368			`return -EINVAL;`
369			`}`
370
371			`if (host->iso_listen_count[channel]++ == 0) {`
372			`return host->driver->devctl(host, ISO_LISTEN_CHANNEL, channel);`
373			`}`
374
375			`return 0;`
376			`}`
377
378			`void hpsb_unlisten_channel(struct hpsb_highlevel hl, struct hpsb_host host,`
379			`unsigned int channel)`
380			`{`
381			`if (channel > 63) {`
382			`HPSB_ERR("%s called with invalid channel", __FUNCTION__);`
383			`return;`
384			`}`
385
386			`if (--host->iso_listen_count[channel] == 0) {`
387			`host->driver->devctl(host, ISO_UNLISTEN_CHANNEL, channel);`
388			`}`
389			`}`
390
391
392			`void highlevel_add_host(struct hpsb_host *host)`
393			`{`
394			`struct list_head *entry;`
395			`struct hpsb_highlevel *hl;`
396
397			`read_lock(&hl_drivers_lock);`
398			`list_for_each(entry, &hl_drivers) {`
399			`hl = list_entry(entry, struct hpsb_highlevel, hl_list);`
400			`if (hl->add_host)`
401			`hl->add_host(host);`
402			`}`
403			`read_unlock(&hl_drivers_lock);`
404			`}`
405
406			`void highlevel_remove_host(struct hpsb_host *host)`
407			`{`
408			`struct list_head *entry;`
409			`struct hpsb_highlevel *hl;`
410
411			`read_lock(&hl_drivers_lock);`
412			`list_for_each(entry, &hl_drivers) {`
413			`hl = list_entry(entry, struct hpsb_highlevel, hl_list);`
414
415			`if (hl->remove_host) {`
416			`hl->remove_host(host);`
417			`hpsb_destroy_hostinfo(hl, host);`
418			`}`
419			`}`
420			`read_unlock(&hl_drivers_lock);`
421			`}`
422
423			`void highlevel_host_reset(struct hpsb_host *host)`
424			`{`
425			`struct list_head *entry;`
426			`struct hpsb_highlevel *hl;`
427
428			`read_lock(&hl_drivers_lock);`
429			`list_for_each(entry, &hl_drivers) {`
430			`hl = list_entry(entry, struct hpsb_highlevel, hl_list);`
431
432			`if (hl->host_reset)`
433			`hl->host_reset(host);`
434			`}`
435			`read_unlock(&hl_drivers_lock);`
436			`}`
437
438			`void highlevel_iso_receive(struct hpsb_host host, void data,`
439			`size_t length)`
440			`{`
441			`struct list_head *entry;`
442			`struct hpsb_highlevel *hl;`
443			`int channel = (((quadlet_t *)data)[0] >> 8) & 0x3f;`
444
445			`read_lock(&hl_drivers_lock);`
446			`entry = hl_drivers.next;`
447
448			`while (entry != &hl_drivers) {`
449			`hl = list_entry(entry, struct hpsb_highlevel, hl_list);`
450			`if (hl->iso_receive) {`
451			`hl->iso_receive(host, channel, data, length);`
452			`}`
453			`entry = entry->next;`
454			`}`
455			`read_unlock(&hl_drivers_lock);`
456			`}`
457
458			`void highlevel_fcp_request(struct hpsb_host *host, int nodeid, int direction,`
459			`void *data, size_t length)`
460			`{`
461			`struct list_head *entry;`
462			`struct hpsb_highlevel *hl;`
463			`int cts = ((quadlet_t *)data)[0] >> 4;`
464
465			`read_lock(&hl_drivers_lock);`
466			`entry = hl_drivers.next;`
467
468			`while (entry != &hl_drivers) {`
469			`hl = list_entry(entry, struct hpsb_highlevel, hl_list);`
470			`if (hl->fcp_request) {`
471			`hl->fcp_request(host, nodeid, direction, cts, data,`
472			`length);`
473			`}`
474			`entry = entry->next;`
475			`}`
476			`read_unlock(&hl_drivers_lock);`
477			`}`
478
479			`int highlevel_read(struct hpsb_host host, int nodeid, void data,`
480			`u64 addr, unsigned int length, u16 flags)`
481			`{`
482			`struct hpsb_address_serve *as;`
483			`struct list_head *entry;`
484			`unsigned int partlength;`
485			`int rcode = RCODE_ADDRESS_ERROR;`
486
487			`read_lock(&addr_space_lock);`
488
489			`entry = addr_space.next;`
490			`as = list_entry(entry, struct hpsb_address_serve, as_list);`
491
492			`while (as->start <= addr) {`
493			`if (as->end > addr) {`
494			`partlength = min(as->end - addr, (u64) length);`
495
496			`if (as->op->read) {`
497			`rcode = as->op->read(host, nodeid, data,`
498			`addr, partlength, flags);`
499			`} else {`
500			`rcode = RCODE_TYPE_ERROR;`
501			`}`
502
503			`(u8 *)data += partlength;`
504			`length -= partlength;`
505			`addr += partlength;`
506
507			`if ((rcode != RCODE_COMPLETE) \|\| !length) {`
508			`break;`
509			`}`
510			`}`
511
512			`entry = entry->next;`
513			`as = list_entry(entry, struct hpsb_address_serve, as_list);`
514			`}`
515
516			`read_unlock(&addr_space_lock);`
517
518			`if (length && (rcode == RCODE_COMPLETE)) {`
519			`rcode = RCODE_ADDRESS_ERROR;`
520			`}`
521
522			`return rcode;`
523			`}`
524
525			`int highlevel_write(struct hpsb_host *host, int nodeid, int destid,`
526			`void *data, u64 addr, unsigned int length, u16 flags)`
527			`{`
528			`struct hpsb_address_serve *as;`
529			`struct list_head *entry;`
530			`unsigned int partlength;`
531			`int rcode = RCODE_ADDRESS_ERROR;`
532
533			`read_lock(&addr_space_lock);`
534
535			`entry = addr_space.next;`
536			`as = list_entry(entry, struct hpsb_address_serve, as_list);`
537
538			`while (as->start <= addr) {`
539			`if (as->end > addr) {`
540			`partlength = min(as->end - addr, (u64) length);`
541
542			`if (as->op->write) {`
543			`rcode = as->op->write(host, nodeid, destid,`
544			`data, addr, partlength, flags);`
545			`} else {`
546			`rcode = RCODE_TYPE_ERROR;`
547			`}`
548
549			`(u8 *)data += partlength;`
550			`length -= partlength;`
551			`addr += partlength;`
552
553			`if ((rcode != RCODE_COMPLETE) \|\| !length) {`
554			`break;`
555			`}`
556			`}`
557
558			`entry = entry->next;`
559			`as = list_entry(entry, struct hpsb_address_serve, as_list);`
560			`}`
561
562			`read_unlock(&addr_space_lock);`
563
564			`if (length && (rcode == RCODE_COMPLETE)) {`
565			`rcode = RCODE_ADDRESS_ERROR;`
566			`}`
567
568			`return rcode;`
569			`}`
570
571
572			`int highlevel_lock(struct hpsb_host host, int nodeid, quadlet_t store,`
573			`u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, u16 flags)`
574			`{`
575			`struct hpsb_address_serve *as;`
576			`struct list_head *entry;`
577			`int rcode = RCODE_ADDRESS_ERROR;`
578
579			`read_lock(&addr_space_lock);`
580
581			`entry = addr_space.next;`
582			`as = list_entry(entry, struct hpsb_address_serve, as_list);`
583
584			`while (as->start <= addr) {`
585			`if (as->end > addr) {`
586			`if (as->op->lock) {`
587			`rcode = as->op->lock(host, nodeid, store, addr,`
588			`data, arg, ext_tcode, flags);`
589			`} else {`
590			`rcode = RCODE_TYPE_ERROR;`
591			`}`
592
593			`break;`
594			`}`
595
596			`entry = entry->next;`
597			`as = list_entry(entry, struct hpsb_address_serve, as_list);`
598			`}`
599
600			`read_unlock(&addr_space_lock);`
601
602			`return rcode;`
603			`}`
604
605			`int highlevel_lock64(struct hpsb_host host, int nodeid, octlet_t store,`
606			`u64 addr, octlet_t data, octlet_t arg, int ext_tcode, u16 flags)`
607			`{`
608			`struct hpsb_address_serve *as;`
609			`struct list_head *entry;`
610			`int rcode = RCODE_ADDRESS_ERROR;`
611
612			`read_lock(&addr_space_lock);`
613
614			`entry = addr_space.next;`
615			`as = list_entry(entry, struct hpsb_address_serve, as_list);`
616
617			`while (as->start <= addr) {`
618			`if (as->end > addr) {`
619			`if (as->op->lock64) {`
620			`rcode = as->op->lock64(host, nodeid, store,`
621			`addr, data, arg,`
622			`ext_tcode, flags);`
623			`} else {`
624			`rcode = RCODE_TYPE_ERROR;`
625			`}`
626
627			`break;`
628			`}`
629
630			`entry = entry->next;`
631			`as = list_entry(entry, struct hpsb_address_serve, as_list);`
632			`}`
633
634			`read_unlock(&addr_space_lock);`
635
636			`return rcode;`
637			`}`
638
639			`void init_hpsb_highlevel(void)`
640			`{`
641			`INIT_LIST_HEAD(&dummy_zero_addr.as_list);`
642			`INIT_LIST_HEAD(&dummy_zero_addr.addr_list);`
643			`INIT_LIST_HEAD(&dummy_max_addr.as_list);`
644			`INIT_LIST_HEAD(&dummy_max_addr.addr_list);`
645
646			`dummy_zero_addr.op = dummy_max_addr.op = &dummy_ops;`
647
648			`dummy_zero_addr.start = dummy_zero_addr.end = 0;`
649			`dummy_max_addr.start = dummy_max_addr.end = ((u64) 1) << 48;`
650
651			`list_add_tail(&dummy_zero_addr.as_list, &addr_space);`
652			`list_add_tail(&dummy_max_addr.as_list, &addr_space);`
653			`}`