Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/ieee1394/highlevel.c b/drivers/ieee1394/highlevel.c
new file mode 100644
index 0000000..997e1bf
--- /dev/null
+++ b/drivers/ieee1394/highlevel.c
@@ -0,0 +1,704 @@
+/*
+ * 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 <linux/bitops.h>
+
+#include "ieee1394.h"
+#include "ieee1394_types.h"
+#include "hosts.h"
+#include "ieee1394_core.h"
+#include "highlevel.h"
+#include "nodemgr.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 DECLARE_RWSEM(hl_drivers_sem);
+
+static LIST_HEAD(hl_irqs);
+static DEFINE_RWLOCK(hl_irqs_lock);
+
+static DEFINE_RWLOCK(addr_space_lock);
+
+/* 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;
+
+ if (!hl || !host)
+ return NULL;
+
+ read_lock(&hl->host_info_lock);
+ list_for_each_entry(hi, &hl->host_info_list, list) {
+ if (hi->host == host) {
+ read_unlock(&hl->host_info_lock);
+ return hi;
+ }
+ }
+ 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;
+}
+
+
+/* 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_ATOMIC);
+ 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;
+}
+
+
+void *hpsb_get_hostinfo_bykey(struct hpsb_highlevel *hl, unsigned long key)
+{
+ struct hl_host_info *hi;
+ void *data = NULL;
+
+ if (!hl)
+ return NULL;
+
+ read_lock(&hl->host_info_lock);
+ list_for_each_entry(hi, &hl->host_info_list, list) {
+ if (hi->key == key) {
+ data = hi->data;
+ break;
+ }
+ }
+ 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);
+ }
+ }
+
+ return 0;
+}
+
+void hpsb_register_highlevel(struct hpsb_highlevel *hl)
+{
+ 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);
+ up_write(&hl_drivers_sem);
+
+ write_lock(&hl_irqs_lock);
+ list_add_tail(&hl->irq_list, &hl_irqs);
+ write_unlock(&hl_irqs_lock);
+
+ if (hl->add_host)
+ nodemgr_for_each_host(hl, highlevel_for_each_host_reg);
+
+ return;
+}
+
+static void __delete_addr(struct hpsb_address_serve *as)
+{
+ list_del(&as->host_list);
+ list_del(&as->hl_list);
+ kfree(as);
+}
+
+static void __unregister_host(struct hpsb_highlevel *hl, struct hpsb_host *host, int update_cr)
+{
+ unsigned long flags;
+ struct list_head *lh, *next;
+ struct hpsb_address_serve *as;
+
+ /* First, let the highlevel driver unreg */
+ if (hl->remove_host)
+ hl->remove_host(host);
+
+ /* Remove any addresses that are matched for this highlevel driver
+ * and this particular 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);
+ }
+ write_unlock_irqrestore(&addr_space_lock, flags);
+
+ /* 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);
+ }
+ }
+
+ /* And finally, remove all the host info associated between these
+ * two. */
+ hpsb_destroy_hostinfo(hl, host);
+}
+
+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);
+ list_del(&hl->irq_list);
+ write_unlock(&hl_irqs_lock);
+
+ down_write(&hl_drivers_sem);
+ list_del(&hl->hl_list);
+ up_write(&hl_drivers_sem);
+
+ nodemgr_for_each_host(hl, highlevel_for_each_host_unreg);
+}
+
+u64 hpsb_allocate_and_register_addrspace(struct hpsb_highlevel *hl,
+ struct hpsb_host *host,
+ struct hpsb_address_ops *ops,
+ u64 size, u64 alignment,
+ u64 start, u64 end)
+{
+ struct hpsb_address_serve *as, *a1, *a2;
+ struct list_head *entry;
+ u64 retval = ~0ULL;
+ unsigned long flags;
+ u64 align_mask = ~(alignment - 1);
+
+ if ((alignment & 3) || (alignment > 0x800000000000ULL) ||
+ ((hweight32(alignment >> 32) +
+ hweight32(alignment & 0xffffffff) != 1))) {
+ HPSB_ERR("%s called with invalid alignment: 0x%048llx",
+ __FUNCTION__, (unsigned long long)alignment);
+ return retval;
+ }
+
+ if (start == ~0ULL && end == ~0ULL) {
+ start = CSR1212_ALL_SPACE_BASE + 0xffff00000000ULL; /* ohci1394.c limit */
+ 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);
+ return retval;
+ }
+
+ as = (struct hpsb_address_serve *)
+ kmalloc(sizeof(struct hpsb_address_serve), GFP_KERNEL);
+ if (as == NULL) {
+ return retval;
+ }
+
+ INIT_LIST_HEAD(&as->host_list);
+ INIT_LIST_HEAD(&as->hl_list);
+ as->op = ops;
+ 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);
+
+ 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)) {
+ as->start = max(start, a1ea);
+ as->end = as->start + size;
+ list_add(&as->host_list, entry);
+ list_add_tail(&as->hl_list, &hl->addr_list);
+ retval = as->start;
+ break;
+ }
+ }
+
+ write_unlock_irqrestore(&addr_space_lock, flags);
+
+ if (retval == ~0ULL) {
+ 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_serve *as;
+ struct list_head *lh;
+ 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_ATOMIC);
+ if (as == NULL) {
+ return 0;
+ }
+
+ 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);
+
+ if (as_this->end > as->start)
+ break;
+
+ if (as_next->start >= as->end) {
+ list_add(&as->host_list, lh);
+ list_add_tail(&as->hl_list, &hl->addr_list);
+ retval = 1;
+ break;
+ }
+ }
+ write_unlock_irqrestore(&addr_space_lock, flags);
+
+ if (retval == 0)
+ kfree(as);
+
+ return retval;
+}
+
+int hpsb_unregister_addrspace(struct hpsb_highlevel *hl, struct hpsb_host *host,
+ 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);
+
+ 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) {
+ __delete_addr(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);
+ }
+}
+
+static void init_hpsb_highlevel(struct hpsb_host *host)
+{
+ INIT_LIST_HEAD(&dummy_zero_addr.host_list);
+ INIT_LIST_HEAD(&dummy_zero_addr.hl_list);
+ INIT_LIST_HEAD(&dummy_max_addr.host_list);
+ INIT_LIST_HEAD(&dummy_max_addr.hl_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.host_list, &host->addr_space);
+ list_add_tail(&dummy_max_addr.host_list, &host->addr_space);
+}
+
+void highlevel_add_host(struct hpsb_host *host)
+{
+ struct hpsb_highlevel *hl;
+
+ init_hpsb_highlevel(host);
+
+ down_read(&hl_drivers_sem);
+ 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);
+ }
+}
+
+void highlevel_remove_host(struct hpsb_host *host)
+{
+ struct hpsb_highlevel *hl;
+
+ down_read(&hl_drivers_sem);
+ list_for_each_entry(hl, &hl_drivers, hl_list)
+ __unregister_host(hl, host, 0);
+ up_read(&hl_drivers_sem);
+}
+
+void highlevel_host_reset(struct hpsb_host *host)
+{
+ struct hpsb_highlevel *hl;
+
+ read_lock(&hl_irqs_lock);
+ list_for_each_entry(hl, &hl_irqs, irq_list) {
+ if (hl->host_reset)
+ hl->host_reset(host);
+ }
+ read_unlock(&hl_irqs_lock);
+}
+
+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;
+
+ read_lock(&hl_irqs_lock);
+ 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);
+}
+
+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;
+
+ read_lock(&hl_irqs_lock);
+ list_for_each_entry(hl, &hl_irqs, irq_list) {
+ if (hl->fcp_request)
+ hl->fcp_request(host, nodeid, direction, cts, data,
+ length);
+ }
+ read_unlock(&hl_irqs_lock);
+}
+
+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);
+
+ 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->op->read) {
+ rcode = as->op->read(host, nodeid, 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);
+
+ 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;
+ 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->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);
+
+ 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;
+ 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;
+}
+
+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;
+ 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->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;
+}