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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] Attached are the patches for new ioemu communication mechanism. The new
# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID 0c0d929e787c0848ba26168cd0fbebb6dad2aaf2
# Parent 0746ef61733bffaccba394c191d7617ea2a67600
Attached are the patches for new ioemu communication mechanism. The new
mechanism provides richer I/O operation semantics, such as and,or,xor
operation on MMIO space. This is necessary for operating systems such
as Windows XP and Windows 2003.
This is the first part of a two part patch. This patch applies to ioemu.
Signed-Off-By: Leendert van Doorn <leendert@xxxxxxxxxxxxxx>
diff -r 0746ef61733b -r 0c0d929e787c tools/ioemu/exec.c
--- a/tools/ioemu/exec.c Fri Sep 2 17:54:53 2005
+++ b/tools/ioemu/exec.c Fri Sep 2 17:55:24 2005
@@ -142,6 +142,10 @@
#else
setvbuf(logfile, NULL, _IOLBF, 0);
#endif
+/*
+ stdout = logfile;
+ stderr = logfile;
+*/
}
}
@@ -386,9 +390,6 @@
io_mem_write[io_index][1](io_mem_opaque[io_index], addr,
val);
l = 2;
} else {
- if (l!=1){
- fprintf(logfile, "ERROR 8 bit mmio\n");
- }
/* 8 bit access */
val = ldub_raw(buf);
io_mem_write[io_index][0](io_mem_opaque[io_index], addr,
val);
diff -r 0746ef61733b -r 0c0d929e787c tools/ioemu/target-i386-dm/helper2.c
--- a/tools/ioemu/target-i386-dm/helper2.c Fri Sep 2 17:54:53 2005
+++ b/tools/ioemu/target-i386-dm/helper2.c Fri Sep 2 17:55:24 2005
@@ -169,133 +169,217 @@
unsigned long
do_inp(CPUState *env, unsigned long addr, unsigned long size)
{
- switch(size) {
- case 1:
- return cpu_inb(env, addr);
- case 2:
- return cpu_inw(env, addr);
- case 4:
- return cpu_inl(env, addr);
- default:
- fprintf(logfile, "inp: bad size: %lx %lx\n", addr, size);
- exit(-1);
- }
+ switch(size) {
+ case 1:
+ return cpu_inb(env, addr);
+ case 2:
+ return cpu_inw(env, addr);
+ case 4:
+ return cpu_inl(env, addr);
+ default:
+ fprintf(logfile, "inp: bad size: %lx %lx\n", addr, size);
+ exit(-1);
+ }
}
void
do_outp(CPUState *env, unsigned long addr, unsigned long size,
unsigned long val)
{
- switch(size) {
- case 1:
- return cpu_outb(env, addr, val);
- case 2:
- return cpu_outw(env, addr, val);
- case 4:
- return cpu_outl(env, addr, val);
- default:
- fprintf(logfile, "outp: bad size: %lx %lx\n", addr, size);
- exit(-1);
- }
+ switch(size) {
+ case 1:
+ return cpu_outb(env, addr, val);
+ case 2:
+ return cpu_outw(env, addr, val);
+ case 4:
+ return cpu_outl(env, addr, val);
+ default:
+ fprintf(logfile, "outp: bad size: %lx %lx\n", addr, size);
+ exit(-1);
+ }
}
extern void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
int len, int is_write);
static inline void
-read_physical(target_phys_addr_t addr, unsigned long size, void *val)
-{
- return cpu_physical_memory_rw(addr, val, size, 0);
+read_physical(u64 addr, unsigned long size, void *val)
+{
+ return cpu_physical_memory_rw((target_phys_addr_t)addr, val, size, 0);
}
static inline void
-write_physical(target_phys_addr_t addr, unsigned long size, void *val)
-{
- return cpu_physical_memory_rw(addr, val, size, 1);
-}
-
-//send the ioreq to device model
-void cpu_dispatch_ioreq(CPUState *env, ioreq_t *req)
-{
- int i;
- int sign;
-
- sign = (req->df) ? -1 : 1;
-
- if ((!req->pdata_valid) && (req->dir == IOREQ_WRITE)) {
- if (req->size != 4) {
- // Bochs expects higher bits to be 0
- req->u.data &= (1UL << (8 * req->size))-1;
- }
- }
-
- if (req->port_mm == 0){//port io
- if(req->dir == IOREQ_READ){//read
- if (!req->pdata_valid) {
- req->u.data = do_inp(env, req->addr, req->size);
- } else {
- unsigned long tmp;
-
- for (i = 0; i < req->count; i++) {
- tmp = do_inp(env, req->addr, req->size);
-
write_physical((target_phys_addr_t)req->u.pdata + (sign * i * req->size),
- req->size, &tmp);
- }
- }
- } else if(req->dir == IOREQ_WRITE) {
- if (!req->pdata_valid) {
- do_outp(env, req->addr, req->size, req->u.data);
- } else {
- for (i = 0; i < req->count; i++) {
- unsigned long tmp;
-
-
read_physical((target_phys_addr_t)req->u.pdata + (sign * i * req->size),
req->size,
- &tmp);
- do_outp(env, req->addr, req->size, tmp);
- }
- }
-
- }
- } else if (req->port_mm == 1){//memory map io
+write_physical(u64 addr, unsigned long size, void *val)
+{
+ return cpu_physical_memory_rw((target_phys_addr_t)addr, val, size, 1);
+}
+
+void
+cpu_ioreq_pio(CPUState *env, ioreq_t *req)
+{
+ int i, sign;
+
+ sign = req->df ? -1 : 1;
+
+ if (req->dir == IOREQ_READ) {
if (!req->pdata_valid) {
- //handle stos
- if(req->dir == IOREQ_READ) { //read
- for (i = 0; i < req->count; i++) {
-
read_physical((target_phys_addr_t)req->addr + (sign * i * req->size),
req->size, &req->u.data);
- }
- } else if(req->dir == IOREQ_WRITE) { //write
- for (i = 0; i < req->count; i++) {
-
write_physical((target_phys_addr_t)req->addr + (sign * i * req->size),
req->size, &req->u.data);
- }
- }
+ req->u.data = do_inp(env, req->addr, req->size);
} else {
- //handle movs
- unsigned long tmp;
- if (req->dir == IOREQ_READ) {
- for (i = 0; i < req->count; i++) {
-
read_physical((target_phys_addr_t)req->addr + (sign * i * req->size),
req->size, &tmp);
-
write_physical((target_phys_addr_t)req->u.pdata + (sign * i * req->size),
req->size, &tmp);
- }
- } else if (req->dir == IOREQ_WRITE) {
- for (i = 0; i < req->count; i++) {
-
read_physical((target_phys_addr_t)req->u.pdata + (sign * i * req->size),
req->size, &tmp);
-
write_physical((target_phys_addr_t)req->addr + (sign * i * req->size),
req->size, &tmp);
- }
- }
- }
- }
- /* No state change if state = STATE_IORESP_HOOK */
- if (req->state == STATE_IOREQ_INPROCESS)
- req->state = STATE_IORESP_READY;
- env->send_event = 1;
+ unsigned long tmp;
+
+ for (i = 0; i < req->count; i++) {
+ tmp = do_inp(env, req->addr, req->size);
+ write_physical((target_phys_addr_t) req->u.pdata
+ + (sign * i * req->size),
+ req->size, &tmp);
+ }
+ }
+ } else if (req->dir == IOREQ_WRITE) {
+ if (!req->pdata_valid) {
+ do_outp(env, req->addr, req->size, req->u.data);
+ } else {
+ for (i = 0; i < req->count; i++) {
+ unsigned long tmp;
+
+ read_physical((target_phys_addr_t) req->u.pdata
+ + (sign * i * req->size),
+ req->size, &tmp);
+ do_outp(env, req->addr, req->size, tmp);
+ }
+ }
+ }
+}
+
+void
+cpu_ioreq_move(CPUState *env, ioreq_t *req)
+{
+ int i, sign;
+
+ sign = req->df ? -1 : 1;
+
+ if (!req->pdata_valid) {
+ if (req->dir == IOREQ_READ) {
+ for (i = 0; i < req->count; i++) {
+ read_physical(req->addr
+ + (sign * i * req->size),
+ req->size, &req->u.data);
+ }
+ } else if (req->dir == IOREQ_WRITE) {
+ for (i = 0; i < req->count; i++) {
+ write_physical(req->addr
+ + (sign * i * req->size),
+ req->size, &req->u.data);
+ }
+ }
+ } else {
+ unsigned long tmp;
+
+ if (req->dir == IOREQ_READ) {
+ for (i = 0; i < req->count; i++) {
+ read_physical(req->addr
+ + (sign * i * req->size),
+ req->size, &tmp);
+ write_physical((target_phys_addr_t )req->u.pdata
+ + (sign * i * req->size),
+ req->size, &tmp);
+ }
+ } else if (req->dir == IOREQ_WRITE) {
+ for (i = 0; i < req->count; i++) {
+ read_physical((target_phys_addr_t) req->u.pdata
+ + (sign * i * req->size),
+ req->size, &tmp);
+ write_physical(req->addr
+ + (sign * i * req->size),
+ req->size, &tmp);
+ }
+ }
+ }
+}
+
+void
+cpu_ioreq_and(CPUState *env, ioreq_t *req)
+{
+ unsigned long tmp1, tmp2;
+
+ if (req->pdata_valid != 0)
+ hw_error("expected scalar value");
+
+ read_physical(req->addr, req->size, &tmp1);
+ if (req->dir == IOREQ_WRITE) {
+ tmp2 = tmp1 & (unsigned long) req->u.data;
+ write_physical(req->addr, req->size, &tmp2);
+ }
+ req->u.data = tmp1;
+}
+
+void
+cpu_ioreq_or(CPUState *env, ioreq_t *req)
+{
+ unsigned long tmp1, tmp2;
+
+ if (req->pdata_valid != 0)
+ hw_error("expected scalar value");
+
+ read_physical(req->addr, req->size, &tmp1);
+ if (req->dir == IOREQ_WRITE) {
+ tmp2 = tmp1 | (unsigned long) req->u.data;
+ write_physical(req->addr, req->size, &tmp2);
+ }
+ req->u.data = tmp1;
+}
+
+void
+cpu_ioreq_xor(CPUState *env, ioreq_t *req)
+{
+ unsigned long tmp1, tmp2;
+
+ if (req->pdata_valid != 0)
+ hw_error("expected scalar value");
+
+ read_physical(req->addr, req->size, &tmp1);
+ if (req->dir == IOREQ_WRITE) {
+ tmp2 = tmp1 ^ (unsigned long) req->u.data;
+ write_physical(req->addr, req->size, &tmp2);
+ }
+ req->u.data = tmp1;
}
void
cpu_handle_ioreq(CPUState *env)
{
ioreq_t *req = cpu_get_ioreq();
- if (req)
- cpu_dispatch_ioreq(env, req);
+
+ if (req) {
+ if ((!req->pdata_valid) && (req->dir == IOREQ_WRITE)) {
+ if (req->size != 4)
+ req->u.data &= (1UL << (8 * req->size))-1;
+ }
+
+ switch (req->type) {
+ case IOREQ_TYPE_PIO:
+ cpu_ioreq_pio(env, req);
+ break;
+ case IOREQ_TYPE_COPY:
+ cpu_ioreq_move(env, req);
+ break;
+ case IOREQ_TYPE_AND:
+ cpu_ioreq_and(env, req);
+ break;
+ case IOREQ_TYPE_OR:
+ cpu_ioreq_or(env, req);
+ break;
+ case IOREQ_TYPE_XOR:
+ cpu_ioreq_xor(env, req);
+ break;
+ default:
+ hw_error("Invalid ioreq type 0x%x", req->type);
+ }
+
+ /* No state change if state = STATE_IORESP_HOOK */
+ if (req->state == STATE_IOREQ_INPROCESS)
+ req->state = STATE_IORESP_READY;
+ env->send_event = 1;
+ }
}
void
@@ -321,7 +405,7 @@
// Send a message on the event channel. Add the vector to the shared mem
// page.
- intr = &(shared_page->sp_global.pic_intr[0]);
+ intr = (unsigned long *) &(shared_page->sp_global.pic_intr[0]);
atomic_set_bit(vector, intr);
if (loglevel & CPU_LOG_INT)
fprintf(logfile, "injecting vector: %x\n", vector);
diff -r 0746ef61733b -r 0c0d929e787c tools/ioemu/vl.c
--- a/tools/ioemu/vl.c Fri Sep 2 17:54:53 2005
+++ b/tools/ioemu/vl.c Fri Sep 2 17:55:24 2005
@@ -413,6 +413,11 @@
fprintf(stderr, "qemu: hardware error: ");
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
+ if (logfile) {
+ fprintf(logfile, "qemu: hardware error: ");
+ vfprintf(logfile, fmt, ap);
+ fprintf(logfile, "\n");
+ }
va_end(ap);
abort();
}
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