forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
588 lines
17 KiB
588 lines
17 KiB
/* |
|
* I/O Processor (IOP) management |
|
* Written and (C) 1999 by Joshua M. Thompson ([email protected]) |
|
* |
|
* Redistribution and use in source and binary forms, with or without |
|
* modification, are permitted provided that the following conditions |
|
* are met: |
|
* 1. Redistributions of source code must retain the above copyright |
|
* notice and this list of conditions. |
|
* 2. Redistributions in binary form must reproduce the above copyright |
|
* notice and this list of conditions in the documentation and/or other |
|
* materials provided with the distribution. |
|
*/ |
|
|
|
/* |
|
* The IOP chips are used in the IIfx and some Quadras (900, 950) to manage |
|
* serial and ADB. They are actually a 6502 processor and some glue logic. |
|
* |
|
* 990429 (jmt) - Initial implementation, just enough to knock the SCC IOP |
|
* into compatible mode so nobody has to fiddle with the |
|
* Serial Switch control panel anymore. |
|
* 990603 (jmt) - Added code to grab the correct ISM IOP interrupt for OSS |
|
* and non-OSS machines (at least I hope it's correct on a |
|
* non-OSS machine -- someone with a Q900 or Q950 needs to |
|
* check this.) |
|
* 990605 (jmt) - Rearranged things a bit wrt IOP detection; iop_present is |
|
* gone, IOP base addresses are now in an array and the |
|
* globally-visible functions take an IOP number instead of an |
|
* an actual base address. |
|
* 990610 (jmt) - Finished the message passing framework and it seems to work. |
|
* Sending _definitely_ works; my adb-bus.c mods can send |
|
* messages and receive the MSG_COMPLETED status back from the |
|
* IOP. The trick now is figuring out the message formats. |
|
* 990611 (jmt) - More cleanups. Fixed problem where unclaimed messages on a |
|
* receive channel were never properly acknowledged. Bracketed |
|
* the remaining debug printk's with #ifdef's and disabled |
|
* debugging. I can now type on the console. |
|
* 990612 (jmt) - Copyright notice added. Reworked the way replies are handled. |
|
* It turns out that replies are placed back in the send buffer |
|
* for that channel; messages on the receive channels are always |
|
* unsolicited messages from the IOP (and our replies to them |
|
* should go back in the receive channel.) Also added tracking |
|
* of device names to the listener functions ala the interrupt |
|
* handlers. |
|
* 990729 (jmt) - Added passing of pt_regs structure to IOP handlers. This is |
|
* used by the new unified ADB driver. |
|
* |
|
* TODO: |
|
* |
|
* o The SCC IOP has to be placed in bypass mode before the serial console |
|
* gets initialized. iop_init() would be one place to do that. Or the |
|
* bootloader could do that. For now, the Serial Switch control panel |
|
* is needed for that -- contrary to the changelog above. |
|
* o Something should be periodically checking iop_alive() to make sure the |
|
* IOP hasn't died. |
|
* o Some of the IOP manager routines need better error checking and |
|
* return codes. Nothing major, just prettying up. |
|
*/ |
|
|
|
/* |
|
* ----------------------- |
|
* IOP Message Passing 101 |
|
* ----------------------- |
|
* |
|
* The host talks to the IOPs using a rather simple message-passing scheme via |
|
* a shared memory area in the IOP RAM. Each IOP has seven "channels"; each |
|
* channel is connected to a specific software driver on the IOP. For example |
|
* on the SCC IOP there is one channel for each serial port. Each channel has |
|
* an incoming and and outgoing message queue with a depth of one. |
|
* |
|
* A message is 32 bytes plus a state byte for the channel (MSG_IDLE, MSG_NEW, |
|
* MSG_RCVD, MSG_COMPLETE). To send a message you copy the message into the |
|
* buffer, set the state to MSG_NEW and signal the IOP by setting the IRQ flag |
|
* in the IOP control to 1. The IOP will move the state to MSG_RCVD when it |
|
* receives the message and then to MSG_COMPLETE when the message processing |
|
* has completed. It is the host's responsibility at that point to read the |
|
* reply back out of the send channel buffer and reset the channel state back |
|
* to MSG_IDLE. |
|
* |
|
* To receive message from the IOP the same procedure is used except the roles |
|
* are reversed. That is, the IOP puts message in the channel with a state of |
|
* MSG_NEW, and the host receives the message and move its state to MSG_RCVD |
|
* and then to MSG_COMPLETE when processing is completed and the reply (if any) |
|
* has been placed back in the receive channel. The IOP will then reset the |
|
* channel state to MSG_IDLE. |
|
* |
|
* Two sets of host interrupts are provided, INT0 and INT1. Both appear on one |
|
* interrupt level; they are distinguished by a pair of bits in the IOP status |
|
* register. The IOP will raise INT0 when one or more messages in the send |
|
* channels have gone to the MSG_COMPLETE state and it will raise INT1 when one |
|
* or more messages on the receive channels have gone to the MSG_NEW state. |
|
* |
|
* Since each channel handles only one message we have to implement a small |
|
* interrupt-driven queue on our end. Messages to be sent are placed on the |
|
* queue for sending and contain a pointer to an optional callback function. |
|
* The handler for a message is called when the message state goes to |
|
* MSG_COMPLETE. |
|
* |
|
* For receiving message we maintain a list of handler functions to call when |
|
* a message is received on that IOP/channel combination. The handlers are |
|
* called much like an interrupt handler and are passed a copy of the message |
|
* from the IOP. The message state will be in MSG_RCVD while the handler runs; |
|
* it is the handler's responsibility to call iop_complete_message() when |
|
* finished; this function moves the message state to MSG_COMPLETE and signals |
|
* the IOP. This two-step process is provided to allow the handler to defer |
|
* message processing to a bottom-half handler if the processing will take |
|
* a significant amount of time (handlers are called at interrupt time so they |
|
* should execute quickly.) |
|
*/ |
|
|
|
#include <linux/types.h> |
|
#include <linux/kernel.h> |
|
#include <linux/mm.h> |
|
#include <linux/delay.h> |
|
#include <linux/init.h> |
|
#include <linux/interrupt.h> |
|
|
|
#include <asm/macintosh.h> |
|
#include <asm/macints.h> |
|
#include <asm/mac_iop.h> |
|
|
|
#ifdef DEBUG |
|
#define iop_pr_debug(fmt, ...) \ |
|
printk(KERN_DEBUG "%s: " fmt, __func__, ##__VA_ARGS__) |
|
#define iop_pr_cont(fmt, ...) \ |
|
printk(KERN_CONT fmt, ##__VA_ARGS__) |
|
#else |
|
#define iop_pr_debug(fmt, ...) \ |
|
no_printk(KERN_DEBUG "%s: " fmt, __func__, ##__VA_ARGS__) |
|
#define iop_pr_cont(fmt, ...) \ |
|
no_printk(KERN_CONT fmt, ##__VA_ARGS__) |
|
#endif |
|
|
|
/* Non-zero if the IOPs are present */ |
|
|
|
int iop_scc_present, iop_ism_present; |
|
|
|
/* structure for tracking channel listeners */ |
|
|
|
struct listener { |
|
const char *devname; |
|
void (*handler)(struct iop_msg *); |
|
}; |
|
|
|
/* |
|
* IOP structures for the two IOPs |
|
* |
|
* The SCC IOP controls both serial ports (A and B) as its two functions. |
|
* The ISM IOP controls the SWIM (floppy drive) and ADB. |
|
*/ |
|
|
|
static volatile struct mac_iop *iop_base[NUM_IOPS]; |
|
|
|
/* |
|
* IOP message queues |
|
*/ |
|
|
|
static struct iop_msg iop_msg_pool[NUM_IOP_MSGS]; |
|
static struct iop_msg *iop_send_queue[NUM_IOPS][NUM_IOP_CHAN]; |
|
static struct listener iop_listeners[NUM_IOPS][NUM_IOP_CHAN]; |
|
|
|
irqreturn_t iop_ism_irq(int, void *); |
|
|
|
/* |
|
* Private access functions |
|
*/ |
|
|
|
static __inline__ void iop_loadaddr(volatile struct mac_iop *iop, __u16 addr) |
|
{ |
|
iop->ram_addr_lo = addr; |
|
iop->ram_addr_hi = addr >> 8; |
|
} |
|
|
|
static __inline__ __u8 iop_readb(volatile struct mac_iop *iop, __u16 addr) |
|
{ |
|
iop->ram_addr_lo = addr; |
|
iop->ram_addr_hi = addr >> 8; |
|
return iop->ram_data; |
|
} |
|
|
|
static __inline__ void iop_writeb(volatile struct mac_iop *iop, __u16 addr, __u8 data) |
|
{ |
|
iop->ram_addr_lo = addr; |
|
iop->ram_addr_hi = addr >> 8; |
|
iop->ram_data = data; |
|
} |
|
|
|
static __inline__ void iop_stop(volatile struct mac_iop *iop) |
|
{ |
|
iop->status_ctrl = IOP_AUTOINC; |
|
} |
|
|
|
static __inline__ void iop_start(volatile struct mac_iop *iop) |
|
{ |
|
iop->status_ctrl = IOP_RUN | IOP_AUTOINC; |
|
} |
|
|
|
static __inline__ void iop_interrupt(volatile struct mac_iop *iop) |
|
{ |
|
iop->status_ctrl = IOP_IRQ | IOP_RUN | IOP_AUTOINC; |
|
} |
|
|
|
static int iop_alive(volatile struct mac_iop *iop) |
|
{ |
|
int retval; |
|
|
|
retval = (iop_readb(iop, IOP_ADDR_ALIVE) == 0xFF); |
|
iop_writeb(iop, IOP_ADDR_ALIVE, 0); |
|
return retval; |
|
} |
|
|
|
static struct iop_msg *iop_get_unused_msg(void) |
|
{ |
|
int i; |
|
unsigned long flags; |
|
|
|
local_irq_save(flags); |
|
|
|
for (i = 0 ; i < NUM_IOP_MSGS ; i++) { |
|
if (iop_msg_pool[i].status == IOP_MSGSTATUS_UNUSED) { |
|
iop_msg_pool[i].status = IOP_MSGSTATUS_WAITING; |
|
local_irq_restore(flags); |
|
return &iop_msg_pool[i]; |
|
} |
|
} |
|
|
|
local_irq_restore(flags); |
|
return NULL; |
|
} |
|
|
|
/* |
|
* Initialize the IOPs, if present. |
|
*/ |
|
|
|
void __init iop_init(void) |
|
{ |
|
int i; |
|
|
|
if (macintosh_config->scc_type == MAC_SCC_IOP) { |
|
if (macintosh_config->ident == MAC_MODEL_IIFX) |
|
iop_base[IOP_NUM_SCC] = (struct mac_iop *)SCC_IOP_BASE_IIFX; |
|
else |
|
iop_base[IOP_NUM_SCC] = (struct mac_iop *)SCC_IOP_BASE_QUADRA; |
|
iop_scc_present = 1; |
|
pr_debug("SCC IOP detected at %p\n", iop_base[IOP_NUM_SCC]); |
|
} |
|
if (macintosh_config->adb_type == MAC_ADB_IOP) { |
|
if (macintosh_config->ident == MAC_MODEL_IIFX) |
|
iop_base[IOP_NUM_ISM] = (struct mac_iop *)ISM_IOP_BASE_IIFX; |
|
else |
|
iop_base[IOP_NUM_ISM] = (struct mac_iop *)ISM_IOP_BASE_QUADRA; |
|
iop_ism_present = 1; |
|
pr_debug("ISM IOP detected at %p\n", iop_base[IOP_NUM_ISM]); |
|
|
|
iop_stop(iop_base[IOP_NUM_ISM]); |
|
iop_start(iop_base[IOP_NUM_ISM]); |
|
iop_alive(iop_base[IOP_NUM_ISM]); /* clears the alive flag */ |
|
} |
|
|
|
/* Make the whole pool available and empty the queues */ |
|
|
|
for (i = 0 ; i < NUM_IOP_MSGS ; i++) { |
|
iop_msg_pool[i].status = IOP_MSGSTATUS_UNUSED; |
|
} |
|
|
|
for (i = 0 ; i < NUM_IOP_CHAN ; i++) { |
|
iop_send_queue[IOP_NUM_SCC][i] = NULL; |
|
iop_send_queue[IOP_NUM_ISM][i] = NULL; |
|
iop_listeners[IOP_NUM_SCC][i].devname = NULL; |
|
iop_listeners[IOP_NUM_SCC][i].handler = NULL; |
|
iop_listeners[IOP_NUM_ISM][i].devname = NULL; |
|
iop_listeners[IOP_NUM_ISM][i].handler = NULL; |
|
} |
|
} |
|
|
|
/* |
|
* Register the interrupt handler for the IOPs. |
|
*/ |
|
|
|
void __init iop_register_interrupts(void) |
|
{ |
|
if (iop_ism_present) { |
|
if (macintosh_config->ident == MAC_MODEL_IIFX) { |
|
if (request_irq(IRQ_MAC_ADB, iop_ism_irq, 0, |
|
"ISM IOP", (void *)IOP_NUM_ISM)) |
|
pr_err("Couldn't register ISM IOP interrupt\n"); |
|
} else { |
|
if (request_irq(IRQ_VIA2_0, iop_ism_irq, 0, "ISM IOP", |
|
(void *)IOP_NUM_ISM)) |
|
pr_err("Couldn't register ISM IOP interrupt\n"); |
|
} |
|
if (!iop_alive(iop_base[IOP_NUM_ISM])) { |
|
pr_warn("IOP: oh my god, they killed the ISM IOP!\n"); |
|
} else { |
|
pr_warn("IOP: the ISM IOP seems to be alive.\n"); |
|
} |
|
} |
|
} |
|
|
|
/* |
|
* Register or unregister a listener for a specific IOP and channel |
|
* |
|
* If the handler pointer is NULL the current listener (if any) is |
|
* unregistered. Otherwise the new listener is registered provided |
|
* there is no existing listener registered. |
|
*/ |
|
|
|
int iop_listen(uint iop_num, uint chan, |
|
void (*handler)(struct iop_msg *), |
|
const char *devname) |
|
{ |
|
if ((iop_num >= NUM_IOPS) || !iop_base[iop_num]) return -EINVAL; |
|
if (chan >= NUM_IOP_CHAN) return -EINVAL; |
|
if (iop_listeners[iop_num][chan].handler && handler) return -EINVAL; |
|
iop_listeners[iop_num][chan].devname = devname; |
|
iop_listeners[iop_num][chan].handler = handler; |
|
return 0; |
|
} |
|
|
|
/* |
|
* Complete reception of a message, which just means copying the reply |
|
* into the buffer, setting the channel state to MSG_COMPLETE and |
|
* notifying the IOP. |
|
*/ |
|
|
|
void iop_complete_message(struct iop_msg *msg) |
|
{ |
|
int iop_num = msg->iop_num; |
|
int chan = msg->channel; |
|
int i,offset; |
|
|
|
iop_pr_debug("iop_num %d chan %d reply %*ph\n", |
|
msg->iop_num, msg->channel, IOP_MSG_LEN, msg->reply); |
|
|
|
offset = IOP_ADDR_RECV_MSG + (msg->channel * IOP_MSG_LEN); |
|
|
|
for (i = 0 ; i < IOP_MSG_LEN ; i++, offset++) { |
|
iop_writeb(iop_base[iop_num], offset, msg->reply[i]); |
|
} |
|
|
|
iop_writeb(iop_base[iop_num], |
|
IOP_ADDR_RECV_STATE + chan, IOP_MSG_COMPLETE); |
|
iop_interrupt(iop_base[msg->iop_num]); |
|
|
|
msg->status = IOP_MSGSTATUS_UNUSED; |
|
} |
|
|
|
/* |
|
* Actually put a message into a send channel buffer |
|
*/ |
|
|
|
static void iop_do_send(struct iop_msg *msg) |
|
{ |
|
volatile struct mac_iop *iop = iop_base[msg->iop_num]; |
|
int i,offset; |
|
|
|
iop_pr_debug("iop_num %d chan %d message %*ph\n", |
|
msg->iop_num, msg->channel, IOP_MSG_LEN, msg->message); |
|
|
|
offset = IOP_ADDR_SEND_MSG + (msg->channel * IOP_MSG_LEN); |
|
|
|
for (i = 0 ; i < IOP_MSG_LEN ; i++, offset++) { |
|
iop_writeb(iop, offset, msg->message[i]); |
|
} |
|
|
|
iop_writeb(iop, IOP_ADDR_SEND_STATE + msg->channel, IOP_MSG_NEW); |
|
|
|
iop_interrupt(iop); |
|
} |
|
|
|
/* |
|
* Handle sending a message on a channel that |
|
* has gone into the IOP_MSG_COMPLETE state. |
|
*/ |
|
|
|
static void iop_handle_send(uint iop_num, uint chan) |
|
{ |
|
volatile struct mac_iop *iop = iop_base[iop_num]; |
|
struct iop_msg *msg; |
|
int i,offset; |
|
|
|
iop_writeb(iop, IOP_ADDR_SEND_STATE + chan, IOP_MSG_IDLE); |
|
|
|
if (!(msg = iop_send_queue[iop_num][chan])) return; |
|
|
|
msg->status = IOP_MSGSTATUS_COMPLETE; |
|
offset = IOP_ADDR_SEND_MSG + (chan * IOP_MSG_LEN); |
|
for (i = 0 ; i < IOP_MSG_LEN ; i++, offset++) { |
|
msg->reply[i] = iop_readb(iop, offset); |
|
} |
|
iop_pr_debug("iop_num %d chan %d reply %*ph\n", |
|
iop_num, chan, IOP_MSG_LEN, msg->reply); |
|
|
|
if (msg->handler) (*msg->handler)(msg); |
|
msg->status = IOP_MSGSTATUS_UNUSED; |
|
msg = msg->next; |
|
iop_send_queue[iop_num][chan] = msg; |
|
if (msg && iop_readb(iop, IOP_ADDR_SEND_STATE + chan) == IOP_MSG_IDLE) |
|
iop_do_send(msg); |
|
} |
|
|
|
/* |
|
* Handle reception of a message on a channel that has |
|
* gone into the IOP_MSG_NEW state. |
|
*/ |
|
|
|
static void iop_handle_recv(uint iop_num, uint chan) |
|
{ |
|
volatile struct mac_iop *iop = iop_base[iop_num]; |
|
int i,offset; |
|
struct iop_msg *msg; |
|
|
|
msg = iop_get_unused_msg(); |
|
msg->iop_num = iop_num; |
|
msg->channel = chan; |
|
msg->status = IOP_MSGSTATUS_UNSOL; |
|
msg->handler = iop_listeners[iop_num][chan].handler; |
|
|
|
offset = IOP_ADDR_RECV_MSG + (chan * IOP_MSG_LEN); |
|
|
|
for (i = 0 ; i < IOP_MSG_LEN ; i++, offset++) { |
|
msg->message[i] = iop_readb(iop, offset); |
|
} |
|
iop_pr_debug("iop_num %d chan %d message %*ph\n", |
|
iop_num, chan, IOP_MSG_LEN, msg->message); |
|
|
|
iop_writeb(iop, IOP_ADDR_RECV_STATE + chan, IOP_MSG_RCVD); |
|
|
|
/* If there is a listener, call it now. Otherwise complete */ |
|
/* the message ourselves to avoid possible stalls. */ |
|
|
|
if (msg->handler) { |
|
(*msg->handler)(msg); |
|
} else { |
|
memset(msg->reply, 0, IOP_MSG_LEN); |
|
iop_complete_message(msg); |
|
} |
|
} |
|
|
|
/* |
|
* Send a message |
|
* |
|
* The message is placed at the end of the send queue. Afterwards if the |
|
* channel is idle we force an immediate send of the next message in the |
|
* queue. |
|
*/ |
|
|
|
int iop_send_message(uint iop_num, uint chan, void *privdata, |
|
uint msg_len, __u8 *msg_data, |
|
void (*handler)(struct iop_msg *)) |
|
{ |
|
struct iop_msg *msg, *q; |
|
|
|
if ((iop_num >= NUM_IOPS) || !iop_base[iop_num]) return -EINVAL; |
|
if (chan >= NUM_IOP_CHAN) return -EINVAL; |
|
if (msg_len > IOP_MSG_LEN) return -EINVAL; |
|
|
|
msg = iop_get_unused_msg(); |
|
if (!msg) return -ENOMEM; |
|
|
|
msg->next = NULL; |
|
msg->status = IOP_MSGSTATUS_WAITING; |
|
msg->iop_num = iop_num; |
|
msg->channel = chan; |
|
msg->caller_priv = privdata; |
|
memcpy(msg->message, msg_data, msg_len); |
|
msg->handler = handler; |
|
|
|
if (!(q = iop_send_queue[iop_num][chan])) { |
|
iop_send_queue[iop_num][chan] = msg; |
|
iop_do_send(msg); |
|
} else { |
|
while (q->next) q = q->next; |
|
q->next = msg; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* Upload code to the shared RAM of an IOP. |
|
*/ |
|
|
|
void iop_upload_code(uint iop_num, __u8 *code_start, |
|
uint code_len, __u16 shared_ram_start) |
|
{ |
|
if ((iop_num >= NUM_IOPS) || !iop_base[iop_num]) return; |
|
|
|
iop_loadaddr(iop_base[iop_num], shared_ram_start); |
|
|
|
while (code_len--) { |
|
iop_base[iop_num]->ram_data = *code_start++; |
|
} |
|
} |
|
|
|
/* |
|
* Download code from the shared RAM of an IOP. |
|
*/ |
|
|
|
void iop_download_code(uint iop_num, __u8 *code_start, |
|
uint code_len, __u16 shared_ram_start) |
|
{ |
|
if ((iop_num >= NUM_IOPS) || !iop_base[iop_num]) return; |
|
|
|
iop_loadaddr(iop_base[iop_num], shared_ram_start); |
|
|
|
while (code_len--) { |
|
*code_start++ = iop_base[iop_num]->ram_data; |
|
} |
|
} |
|
|
|
/* |
|
* Compare the code in the shared RAM of an IOP with a copy in system memory |
|
* and return 0 on match or the first nonmatching system memory address on |
|
* failure. |
|
*/ |
|
|
|
__u8 *iop_compare_code(uint iop_num, __u8 *code_start, |
|
uint code_len, __u16 shared_ram_start) |
|
{ |
|
if ((iop_num >= NUM_IOPS) || !iop_base[iop_num]) return code_start; |
|
|
|
iop_loadaddr(iop_base[iop_num], shared_ram_start); |
|
|
|
while (code_len--) { |
|
if (*code_start != iop_base[iop_num]->ram_data) { |
|
return code_start; |
|
} |
|
code_start++; |
|
} |
|
return (__u8 *) 0; |
|
} |
|
|
|
/* |
|
* Handle an ISM IOP interrupt |
|
*/ |
|
|
|
irqreturn_t iop_ism_irq(int irq, void *dev_id) |
|
{ |
|
uint iop_num = (uint) dev_id; |
|
volatile struct mac_iop *iop = iop_base[iop_num]; |
|
int i,state; |
|
u8 events = iop->status_ctrl & (IOP_INT0 | IOP_INT1); |
|
|
|
do { |
|
iop_pr_debug("iop_num %d status %02X\n", iop_num, |
|
iop->status_ctrl); |
|
|
|
/* INT0 indicates state change on an outgoing message channel */ |
|
if (events & IOP_INT0) { |
|
iop->status_ctrl = IOP_INT0 | IOP_RUN | IOP_AUTOINC; |
|
for (i = 0; i < NUM_IOP_CHAN; i++) { |
|
state = iop_readb(iop, IOP_ADDR_SEND_STATE + i); |
|
if (state == IOP_MSG_COMPLETE) |
|
iop_handle_send(iop_num, i); |
|
else if (state != IOP_MSG_IDLE) |
|
iop_pr_debug("chan %d send state %02X\n", |
|
i, state); |
|
} |
|
} |
|
|
|
/* INT1 for incoming messages */ |
|
if (events & IOP_INT1) { |
|
iop->status_ctrl = IOP_INT1 | IOP_RUN | IOP_AUTOINC; |
|
for (i = 0; i < NUM_IOP_CHAN; i++) { |
|
state = iop_readb(iop, IOP_ADDR_RECV_STATE + i); |
|
if (state == IOP_MSG_NEW) |
|
iop_handle_recv(iop_num, i); |
|
else if (state != IOP_MSG_IDLE) |
|
iop_pr_debug("chan %d recv state %02X\n", |
|
i, state); |
|
} |
|
} |
|
|
|
events = iop->status_ctrl & (IOP_INT0 | IOP_INT1); |
|
} while (events); |
|
|
|
return IRQ_HANDLED; |
|
} |
|
|
|
void iop_ism_irq_poll(uint iop_num) |
|
{ |
|
unsigned long flags; |
|
|
|
local_irq_save(flags); |
|
iop_ism_irq(0, (void *)iop_num); |
|
local_irq_restore(flags); |
|
}
|
|
|