*
*/
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
#include <linux/module.h>
-#include <linux/mutex.h>
-#include <asm/sn/intr.h>
-#include <asm/sn/sn_sal.h>
+#include <linux/device.h>
#include "xp.h"
-/*
- * The export of xp_nofault_PIOR needs to happen here since it is defined
- * in drivers/misc/sgi-xp/xp_nofault.S. The target of the nofault read is
- * defined here.
- */
-EXPORT_SYMBOL_GPL(xp_nofault_PIOR);
+/* define the XP debug device structures to be used with dev_dbg() et al */
+
+struct device_driver xp_dbg_name = {
+ .name = "xp"
+};
+
+struct device xp_dbg_subname = {
+ .bus_id = {0}, /* set to "" */
+ .driver = &xp_dbg_name
+};
+
+struct device *xp = &xp_dbg_subname;
+
+/* max #of partitions possible */
+short xp_max_npartitions;
+EXPORT_SYMBOL_GPL(xp_max_npartitions);
+
+short xp_partition_id;
+EXPORT_SYMBOL_GPL(xp_partition_id);
+
+u8 xp_region_size;
+EXPORT_SYMBOL_GPL(xp_region_size);
+
+unsigned long (*xp_pa) (void *addr);
+EXPORT_SYMBOL_GPL(xp_pa);
+
+enum xp_retval (*xp_remote_memcpy) (unsigned long dst_gpa,
+ const unsigned long src_gpa, size_t len);
+EXPORT_SYMBOL_GPL(xp_remote_memcpy);
-u64 xp_nofault_PIOR_target;
-EXPORT_SYMBOL_GPL(xp_nofault_PIOR_target);
+int (*xp_cpu_to_nasid) (int cpuid);
+EXPORT_SYMBOL_GPL(xp_cpu_to_nasid);
/*
* xpc_registrations[] keeps track of xpc_connect()'s done by the kernel-level
* users of XPC.
*/
-struct xpc_registration xpc_registrations[XPC_NCHANNELS];
+struct xpc_registration xpc_registrations[XPC_MAX_NCHANNELS];
EXPORT_SYMBOL_GPL(xpc_registrations);
/*
struct xpc_interface xpc_interface = {
(void (*)(int))xpc_notloaded,
(void (*)(int))xpc_notloaded,
- (enum xp_retval(*)(short, int, u32, void **))xpc_notloaded,
- (enum xp_retval(*)(short, int, void *))xpc_notloaded,
- (enum xp_retval(*)(short, int, void *, xpc_notify_func, void *))
- xpc_notloaded,
+ (enum xp_retval(*)(short, int, u32, void *, u16))xpc_notloaded,
+ (enum xp_retval(*)(short, int, u32, void *, u16, xpc_notify_func,
+ void *))xpc_notloaded,
(void (*)(short, int, void *))xpc_notloaded,
(enum xp_retval(*)(short, void *))xpc_notloaded
};
void
xpc_set_interface(void (*connect) (int),
void (*disconnect) (int),
- enum xp_retval (*allocate) (short, int, u32, void **),
- enum xp_retval (*send) (short, int, void *),
- enum xp_retval (*send_notify) (short, int, void *,
+ enum xp_retval (*send) (short, int, u32, void *, u16),
+ enum xp_retval (*send_notify) (short, int, u32, void *, u16,
xpc_notify_func, void *),
void (*received) (short, int, void *),
enum xp_retval (*partid_to_nasids) (short, void *))
{
xpc_interface.connect = connect;
xpc_interface.disconnect = disconnect;
- xpc_interface.allocate = allocate;
xpc_interface.send = send;
xpc_interface.send_notify = send_notify;
xpc_interface.received = received;
{
xpc_interface.connect = (void (*)(int))xpc_notloaded;
xpc_interface.disconnect = (void (*)(int))xpc_notloaded;
- xpc_interface.allocate = (enum xp_retval(*)(short, int, u32,
- void **))xpc_notloaded;
- xpc_interface.send = (enum xp_retval(*)(short, int, void *))
+ xpc_interface.send = (enum xp_retval(*)(short, int, u32, void *, u16))
xpc_notloaded;
- xpc_interface.send_notify = (enum xp_retval(*)(short, int, void *,
- xpc_notify_func,
- void *))xpc_notloaded;
+ xpc_interface.send_notify = (enum xp_retval(*)(short, int, u32, void *,
+ u16, xpc_notify_func,
+ void *))xpc_notloaded;
xpc_interface.received = (void (*)(short, int, void *))
xpc_notloaded;
xpc_interface.partid_to_nasids = (enum xp_retval(*)(short, void *))
{
struct xpc_registration *registration;
- DBUG_ON(ch_number < 0 || ch_number >= XPC_NCHANNELS);
+ DBUG_ON(ch_number < 0 || ch_number >= XPC_MAX_NCHANNELS);
DBUG_ON(payload_size == 0 || nentries == 0);
DBUG_ON(func == NULL);
DBUG_ON(assigned_limit == 0 || idle_limit > assigned_limit);
+ if (XPC_MSG_SIZE(payload_size) > XPC_MSG_MAX_SIZE)
+ return xpPayloadTooBig;
+
registration = &xpc_registrations[ch_number];
if (mutex_lock_interruptible(®istration->mutex) != 0)
}
/* register the channel for connection */
- registration->msg_size = XPC_MSG_SIZE(payload_size);
+ registration->entry_size = XPC_MSG_SIZE(payload_size);
registration->nentries = nentries;
registration->assigned_limit = assigned_limit;
registration->idle_limit = idle_limit;
{
struct xpc_registration *registration;
- DBUG_ON(ch_number < 0 || ch_number >= XPC_NCHANNELS);
+ DBUG_ON(ch_number < 0 || ch_number >= XPC_MAX_NCHANNELS);
registration = &xpc_registrations[ch_number];
registration->func = NULL;
registration->key = NULL;
registration->nentries = 0;
- registration->msg_size = 0;
+ registration->entry_size = 0;
registration->assigned_limit = 0;
registration->idle_limit = 0;
int __init
xp_init(void)
{
- int ret, ch_number;
- u64 func_addr = *(u64 *)xp_nofault_PIOR;
- u64 err_func_addr = *(u64 *)xp_error_PIOR;
-
- if (!ia64_platform_is("sn2"))
- return -ENODEV;
+ enum xp_retval ret;
+ int ch_number;
- /*
- * Register a nofault code region which performs a cross-partition
- * PIO read. If the PIO read times out, the MCA handler will consume
- * the error and return to a kernel-provided instruction to indicate
- * an error. This PIO read exists because it is guaranteed to timeout
- * if the destination is down (AMO operations do not timeout on at
- * least some CPUs on Shubs <= v1.2, which unfortunately we have to
- * work around).
- */
- ret = sn_register_nofault_code(func_addr, err_func_addr, err_func_addr,
- 1, 1);
- if (ret != 0) {
- printk(KERN_ERR "XP: can't register nofault code, error=%d\n",
- ret);
- }
- /*
- * Setup the nofault PIO read target. (There is no special reason why
- * SH_IPI_ACCESS was selected.)
- */
- if (is_shub2())
- xp_nofault_PIOR_target = SH2_IPI_ACCESS0;
+ if (is_shub())
+ ret = xp_init_sn2();
+ else if (is_uv())
+ ret = xp_init_uv();
else
- xp_nofault_PIOR_target = SH1_IPI_ACCESS;
+ ret = xpUnsupported;
+
+ if (ret != xpSuccess)
+ return -ENODEV;
/* initialize the connection registration mutex */
- for (ch_number = 0; ch_number < XPC_NCHANNELS; ch_number++)
+ for (ch_number = 0; ch_number < XPC_MAX_NCHANNELS; ch_number++)
mutex_init(&xpc_registrations[ch_number].mutex);
return 0;
void __exit
xp_exit(void)
{
- u64 func_addr = *(u64 *)xp_nofault_PIOR;
- u64 err_func_addr = *(u64 *)xp_error_PIOR;
-
- /* unregister the PIO read nofault code region */
- (void)sn_register_nofault_code(func_addr, err_func_addr,
- err_func_addr, 1, 0);
+ if (is_shub())
+ xp_exit_sn2();
+ else if (is_uv())
+ xp_exit_uv();
}
module_exit(xp_exit);
git.openpandora.org / pandora-kernel.git / blobdiff