diff options
Diffstat (limited to 'drivers/ieee1394/highlevel.c')
| -rw-r--r-- | drivers/ieee1394/highlevel.c | 445 |
1 files changed, 202 insertions, 243 deletions
diff --git a/drivers/ieee1394/highlevel.c b/drivers/ieee1394/highlevel.c index 491e6032bdec..25b22609e793 100644 --- a/drivers/ieee1394/highlevel.c +++ b/drivers/ieee1394/highlevel.c @@ -53,7 +53,7 @@ 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 hpsb_host *host) { struct hl_host_info *hi = NULL; @@ -68,24 +68,18 @@ static struct hl_host_info *hl_get_hostinfo(struct hpsb_highlevel *hl, } } read_unlock(&hl->host_info_lock); - return NULL; } - /* 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; + return hi ? hi->data : 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) @@ -96,8 +90,8 @@ void *hpsb_create_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host, hi = hl_get_hostinfo(hl, host); if (hi) { - HPSB_ERR("%s called hpsb_create_hostinfo when hostinfo already exists", - hl->name); + HPSB_ERR("%s called hpsb_create_hostinfo when hostinfo already" + " exists", hl->name); return NULL; } @@ -120,7 +114,6 @@ void *hpsb_create_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host, return data; } - int hpsb_set_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host, void *data) { @@ -132,16 +125,14 @@ int hpsb_set_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host, hi->data = data; return 0; } else - HPSB_ERR("%s called hpsb_set_hostinfo when hostinfo already has data", - hl->name); + 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; @@ -154,23 +145,20 @@ void hpsb_destroy_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host) 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) +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; } - void *hpsb_get_hostinfo_bykey(struct hpsb_highlevel *hl, unsigned long key) { struct hl_host_info *hi; @@ -187,46 +175,41 @@ void *hpsb_get_hostinfo_bykey(struct hpsb_highlevel *hl, unsigned long key) } } read_unlock(&hl->host_info_lock); - return data; } - static int highlevel_for_each_host_reg(struct hpsb_host *host, void *__data) { struct hpsb_highlevel *hl = __data; hl->add_host(host); - if (host->update_config_rom) { - if (hpsb_update_config_rom_image(host) < 0) { - HPSB_ERR("Failed to generate Configuration ROM image for host " - "%s-%d", hl->name, host->id); - } - } - + if (host->update_config_rom && hpsb_update_config_rom_image(host) < 0) + HPSB_ERR("Failed to generate Configuration ROM image for host " + "%s-%d", hl->name, host->id); return 0; } void hpsb_register_highlevel(struct hpsb_highlevel *hl) { - INIT_LIST_HEAD(&hl->addr_list); + unsigned long flags; + + INIT_LIST_HEAD(&hl->addr_list); INIT_LIST_HEAD(&hl->host_info_list); rwlock_init(&hl->host_info_lock); down_write(&hl_drivers_sem); - list_add_tail(&hl->hl_list, &hl_drivers); + list_add_tail(&hl->hl_list, &hl_drivers); up_write(&hl_drivers_sem); - write_lock(&hl_irqs_lock); + write_lock_irqsave(&hl_irqs_lock, flags); list_add_tail(&hl->irq_list, &hl_irqs); - write_unlock(&hl_irqs_lock); + write_unlock_irqrestore(&hl_irqs_lock, flags); if (hl->add_host) nodemgr_for_each_host(hl, highlevel_for_each_host_reg); - - return; + return; } static void __delete_addr(struct hpsb_address_serve *as) @@ -236,7 +219,8 @@ static void __delete_addr(struct hpsb_address_serve *as) kfree(as); } -static void __unregister_host(struct hpsb_highlevel *hl, struct hpsb_host *host, int update_cr) +static void __unregister_host(struct hpsb_highlevel *hl, struct hpsb_host *host, + int update_cr) { unsigned long flags; struct list_head *lh, *next; @@ -251,7 +235,6 @@ static void __unregister_host(struct hpsb_highlevel *hl, struct hpsb_host *host, write_lock_irqsave(&addr_space_lock, flags); list_for_each_safe (lh, next, &hl->addr_list) { as = list_entry(lh, struct hpsb_address_serve, hl_list); - if (as->host == host) __delete_addr(as); } @@ -259,15 +242,12 @@ static void __unregister_host(struct hpsb_highlevel *hl, struct hpsb_host *host, /* Now update the config-rom to reflect anything removed by the * highlevel driver. */ - if (update_cr && host->update_config_rom) { - if (hpsb_update_config_rom_image(host) < 0) { - HPSB_ERR("Failed to generate Configuration ROM image for host " - "%s-%d", hl->name, host->id); - } - } + if (update_cr && host->update_config_rom && + hpsb_update_config_rom_image(host) < 0) + HPSB_ERR("Failed to generate Configuration ROM image for host " + "%s-%d", hl->name, host->id); - /* And finally, remove all the host info associated between these - * two. */ + /* Finally remove all the host info associated between these two. */ hpsb_destroy_hostinfo(hl, host); } @@ -276,18 +256,19 @@ static int highlevel_for_each_host_unreg(struct hpsb_host *host, void *__data) struct hpsb_highlevel *hl = __data; __unregister_host(hl, host, 1); - return 0; } void hpsb_unregister_highlevel(struct hpsb_highlevel *hl) { - write_lock(&hl_irqs_lock); + unsigned long flags; + + write_lock_irqsave(&hl_irqs_lock, flags); list_del(&hl->irq_list); - write_unlock(&hl_irqs_lock); + write_unlock_irqrestore(&hl_irqs_lock, flags); down_write(&hl_drivers_sem); - list_del(&hl->hl_list); + list_del(&hl->hl_list); up_write(&hl_drivers_sem); nodemgr_for_each_host(hl, highlevel_for_each_host_unreg); @@ -301,7 +282,7 @@ u64 hpsb_allocate_and_register_addrspace(struct hpsb_highlevel *hl, { struct hpsb_address_serve *as, *a1, *a2; struct list_head *entry; - u64 retval = ~0ULL; + u64 retval = CSR1212_INVALID_ADDR_SPACE; unsigned long flags; u64 align_mask = ~(alignment - 1); @@ -312,14 +293,19 @@ u64 hpsb_allocate_and_register_addrspace(struct hpsb_highlevel *hl, return retval; } - if (start == ~0ULL && end == ~0ULL) { - start = CSR1212_ALL_SPACE_BASE + 0xffff00000000ULL; /* ohci1394.c limit */ - end = CSR1212_ALL_SPACE_END; + /* default range, + * avoids controller's posted write area (see OHCI 1.1 clause 1.5) */ + if (start == CSR1212_INVALID_ADDR_SPACE && + end == CSR1212_INVALID_ADDR_SPACE) { + start = host->middle_addr_space; + end = CSR1212_ALL_SPACE_END; } - if (((start|end) & ~align_mask) || (start >= end) || (end > 0x1000000000000ULL)) { - HPSB_ERR("%s called with invalid addresses (start = %012Lx end = %012Lx)", - __FUNCTION__, (unsigned long long)start, (unsigned long long)end); + if (((start|end) & ~align_mask) || (start >= end) || + (end > CSR1212_ALL_SPACE_END)) { + HPSB_ERR("%s called with invalid addresses " + "(start = %012Lx end = %012Lx)", __FUNCTION__, + (unsigned long long)start,(unsigned long long)end); return retval; } @@ -333,20 +319,21 @@ u64 hpsb_allocate_and_register_addrspace(struct hpsb_highlevel *hl, as->host = host; write_lock_irqsave(&addr_space_lock, flags); - list_for_each(entry, &host->addr_space) { u64 a1sa, a1ea; u64 a2sa, a2ea; a1 = list_entry(entry, struct hpsb_address_serve, host_list); - a2 = list_entry(entry->next, struct hpsb_address_serve, host_list); + a2 = list_entry(entry->next, struct hpsb_address_serve, + host_list); a1sa = a1->start & align_mask; a1ea = (a1->end + alignment -1) & align_mask; a2sa = a2->start & align_mask; a2ea = (a2->end + alignment -1) & align_mask; - if ((a2sa - a1ea >= size) && (a2sa - start >= size) && (a2sa > start)) { + if ((a2sa - a1ea >= size) && (a2sa - start >= size) && + (a2sa > start)) { as->start = max(start, a1ea); as->end = as->start + size; list_add(&as->host_list, entry); @@ -355,47 +342,45 @@ u64 hpsb_allocate_and_register_addrspace(struct hpsb_highlevel *hl, break; } } - write_unlock_irqrestore(&addr_space_lock, flags); - if (retval == ~0ULL) { + if (retval == CSR1212_INVALID_ADDR_SPACE) kfree(as); - } - return retval; } int hpsb_register_addrspace(struct hpsb_highlevel *hl, struct hpsb_host *host, - struct hpsb_address_ops *ops, u64 start, u64 end) + struct hpsb_address_ops *ops, u64 start, u64 end) { - struct hpsb_address_serve *as; + struct hpsb_address_serve *as; struct list_head *lh; - int retval = 0; - unsigned long flags; + int retval = 0; + unsigned long flags; - if (((start|end) & 3) || (start >= end) || (end > 0x1000000000000ULL)) { - HPSB_ERR("%s called with invalid addresses", __FUNCTION__); - return 0; - } + if (((start|end) & 3) || (start >= end) || + (end > CSR1212_ALL_SPACE_END)) { + HPSB_ERR("%s called with invalid addresses", __FUNCTION__); + return 0; + } as = kmalloc(sizeof(*as), GFP_ATOMIC); if (!as) return 0; - INIT_LIST_HEAD(&as->host_list); - INIT_LIST_HEAD(&as->hl_list); - as->op = ops; - as->start = start; - as->end = end; + INIT_LIST_HEAD(&as->host_list); + INIT_LIST_HEAD(&as->hl_list); + as->op = ops; + as->start = start; + as->end = end; as->host = host; write_lock_irqsave(&addr_space_lock, flags); - list_for_each(lh, &host->addr_space) { struct hpsb_address_serve *as_this = list_entry(lh, struct hpsb_address_serve, host_list); struct hpsb_address_serve *as_next = - list_entry(lh->next, struct hpsb_address_serve, host_list); + list_entry(lh->next, struct hpsb_address_serve, + host_list); if (as_this->end > as->start) break; @@ -411,60 +396,51 @@ int hpsb_register_addrspace(struct hpsb_highlevel *hl, struct hpsb_host *host, if (retval == 0) kfree(as); - - return retval; + return retval; } int hpsb_unregister_addrspace(struct hpsb_highlevel *hl, struct hpsb_host *host, - u64 start) + u64 start) { - int retval = 0; - struct hpsb_address_serve *as; - struct list_head *lh, *next; - unsigned long flags; - - write_lock_irqsave(&addr_space_lock, flags); + int retval = 0; + struct hpsb_address_serve *as; + struct list_head *lh, *next; + 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, hl_list); - if (as->start == start && as->host == host) { + as = list_entry(lh, struct hpsb_address_serve, hl_list); + if (as->start == start && as->host == host) { __delete_addr(as); - retval = 1; - break; - } - } - - write_unlock_irqrestore(&addr_space_lock, flags); - - return retval; + 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) + 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); - } - + 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) + 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); - } + 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); } static void init_hpsb_highlevel(struct hpsb_host *host) @@ -485,26 +461,24 @@ static void init_hpsb_highlevel(struct hpsb_host *host) void highlevel_add_host(struct hpsb_host *host) { - struct hpsb_highlevel *hl; + struct hpsb_highlevel *hl; init_hpsb_highlevel(host); down_read(&hl_drivers_sem); - list_for_each_entry(hl, &hl_drivers, hl_list) { + list_for_each_entry(hl, &hl_drivers, hl_list) { if (hl->add_host) hl->add_host(host); - } - up_read(&hl_drivers_sem); - if (host->update_config_rom) { - if (hpsb_update_config_rom_image(host) < 0) - HPSB_ERR("Failed to generate Configuration ROM image for " - "host %s-%d", hl->name, host->id); } + up_read(&hl_drivers_sem); + if (host->update_config_rom && hpsb_update_config_rom_image(host) < 0) + HPSB_ERR("Failed to generate Configuration ROM image for host " + "%s-%d", hl->name, host->id); } void highlevel_remove_host(struct hpsb_host *host) { - struct hpsb_highlevel *hl; + struct hpsb_highlevel *hl; down_read(&hl_drivers_sem); list_for_each_entry(hl, &hl_drivers, hl_list) @@ -514,184 +488,169 @@ void highlevel_remove_host(struct hpsb_host *host) void highlevel_host_reset(struct hpsb_host *host) { - struct hpsb_highlevel *hl; + unsigned long flags; + struct hpsb_highlevel *hl; - read_lock(&hl_irqs_lock); + read_lock_irqsave(&hl_irqs_lock, flags); list_for_each_entry(hl, &hl_irqs, irq_list) { - if (hl->host_reset) - hl->host_reset(host); - } - read_unlock(&hl_irqs_lock); + if (hl->host_reset) + hl->host_reset(host); + } + read_unlock_irqrestore(&hl_irqs_lock, flags); } void highlevel_iso_receive(struct hpsb_host *host, void *data, size_t length) { - struct hpsb_highlevel *hl; - int channel = (((quadlet_t *)data)[0] >> 8) & 0x3f; + unsigned long flags; + struct hpsb_highlevel *hl; + int channel = (((quadlet_t *)data)[0] >> 8) & 0x3f; - read_lock(&hl_irqs_lock); + read_lock_irqsave(&hl_irqs_lock, flags); list_for_each_entry(hl, &hl_irqs, irq_list) { - if (hl->iso_receive) - hl->iso_receive(host, channel, data, length); - } - read_unlock(&hl_irqs_lock); + if (hl->iso_receive) + hl->iso_receive(host, channel, data, length); + } + read_unlock_irqrestore(&hl_irqs_lock, flags); } void highlevel_fcp_request(struct hpsb_host *host, int nodeid, int direction, void *data, size_t length) { - struct hpsb_highlevel *hl; - int cts = ((quadlet_t *)data)[0] >> 4; + unsigned long flags; + struct hpsb_highlevel *hl; + int cts = ((quadlet_t *)data)[0] >> 4; - read_lock(&hl_irqs_lock); + read_lock_irqsave(&hl_irqs_lock, flags); list_for_each_entry(hl, &hl_irqs, irq_list) { - if (hl->fcp_request) - hl->fcp_request(host, nodeid, direction, cts, data, + if (hl->fcp_request) + hl->fcp_request(host, nodeid, direction, cts, data, length); - } - read_unlock(&hl_irqs_lock); + } + read_unlock_irqrestore(&hl_irqs_lock, flags); } -int highlevel_read(struct hpsb_host *host, int nodeid, void *data, - u64 addr, unsigned int length, u16 flags) +int highlevel_read(struct hpsb_host *host, int nodeid, void *data, u64 addr, + unsigned int length, u16 flags) { - struct hpsb_address_serve *as; - unsigned int partlength; - int rcode = RCODE_ADDRESS_ERROR; - - read_lock(&addr_space_lock); + struct hpsb_address_serve *as; + unsigned int partlength; + int rcode = RCODE_ADDRESS_ERROR; + read_lock(&addr_space_lock); list_for_each_entry(as, &host->addr_space, host_list) { if (as->start > addr) break; - if (as->end > addr) { - partlength = min(as->end - addr, (u64) length); + if (as->end > addr) { + partlength = min(as->end - addr, (u64) length); - if (as->op->read) { - rcode = as->op->read(host, nodeid, data, + if (as->op->read) + rcode = as->op->read(host, nodeid, data, addr, partlength, flags); - } else { - rcode = RCODE_TYPE_ERROR; - } + else + rcode = RCODE_TYPE_ERROR; data += partlength; - length -= partlength; - addr += partlength; - - if ((rcode != RCODE_COMPLETE) || !length) { - break; - } - } - } - - read_unlock(&addr_space_lock); + length -= partlength; + addr += partlength; - if (length && (rcode == RCODE_COMPLETE)) { - rcode = RCODE_ADDRESS_ERROR; - } + if ((rcode != RCODE_COMPLETE) || !length) + break; + } + } + read_unlock(&addr_space_lock); - return rcode; + 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) +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; - unsigned int partlength; - int rcode = RCODE_ADDRESS_ERROR; - - read_lock(&addr_space_lock); + struct hpsb_address_serve *as; + unsigned int partlength; + int rcode = RCODE_ADDRESS_ERROR; + read_lock(&addr_space_lock); list_for_each_entry(as, &host->addr_space, host_list) { if (as->start > addr) break; - if (as->end > addr) { - partlength = min(as->end - addr, (u64) length); + 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; - } + if (as->op->write) + rcode = as->op->write(host, nodeid, destid, + data, addr, partlength, + flags); + else + rcode = RCODE_TYPE_ERROR; data += partlength; - length -= partlength; - addr += partlength; - - if ((rcode != RCODE_COMPLETE) || !length) { - break; - } - } - } - - read_unlock(&addr_space_lock); + length -= partlength; + addr += partlength; - if (length && (rcode == RCODE_COMPLETE)) { - rcode = RCODE_ADDRESS_ERROR; - } + if ((rcode != RCODE_COMPLETE) || !length) + break; + } + } + read_unlock(&addr_space_lock); - return rcode; + 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) + u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, + u16 flags) { - struct hpsb_address_serve *as; - int rcode = RCODE_ADDRESS_ERROR; - - read_lock(&addr_space_lock); + struct hpsb_address_serve *as; + int rcode = RCODE_ADDRESS_ERROR; + read_lock(&addr_space_lock); list_for_each_entry(as, &host->addr_space, host_list) { if (as->start > addr) break; - 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; - } - } - - read_unlock(&addr_space_lock); - - return rcode; + 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; + } + } + 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) + u64 addr, octlet_t data, octlet_t arg, int ext_tcode, + u16 flags) { - struct hpsb_address_serve *as; - int rcode = RCODE_ADDRESS_ERROR; + struct hpsb_address_serve *as; + int rcode = RCODE_ADDRESS_ERROR; - read_lock(&addr_space_lock); + read_lock(&addr_space_lock); list_for_each_entry(as, &host->addr_space, host_list) { if (as->start > addr) break; - 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; - } - } - - read_unlock(&addr_space_lock); - - return rcode; + 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; + } + } + read_unlock(&addr_space_lock); + return rcode; } |