Mailing List Archive

This patch fixes the compilation error caused by the change set
of 191158d4c289d1bf7c154ad6b51f776f680982d5.
ia64 doesn't support mapcache yet, so not-mapcache version
of cpu_physical_memory_map/unmap are still necessary.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
---
i386-dm/exec-dm.c | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 69 insertions(+), 0 deletions(-)

diff --git a/i386-dm/exec-dm.c b/i386-dm/exec-dm.c
index a509fc5..5cdd57b 100644
--- a/i386-dm/exec-dm.c
+++ b/i386-dm/exec-dm.c
@@ -776,6 +776,7 @@ static void cpu_notify_map_clients(void)
}
}

+#ifdef MAPCACHE
/* Map a physical memory region into a host virtual address.
* May map a subset of the requested range, given by and returned in *plen.
* May return NULL if resources needed to perform the mapping are exhausted.
@@ -802,3 +803,71 @@ void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len,
{
qemu_invalidate_entry(buffer);
}
+#else
+/* Map a physical memory region into a host virtual address.
+ * May map a subset of the requested range, given by and returned in *plen.
+ * May return NULL if resources needed to perform the mapping are exhausted.
+ * Use only for reads OR writes - not for read-modify-write operations.
+ * Use cpu_register_map_client() to know when retrying the map operation is
+ * likely to succeed.
+ */
+void *cpu_physical_memory_map(target_phys_addr_t addr,
+ target_phys_addr_t *plen,
+ int is_write)
+{
+ target_phys_addr_t len = *plen;
+ target_phys_addr_t done = 0;
+ int l;
+ uint8_t *ret = NULL;
+ uint8_t *ptr;
+ target_phys_addr_t page;
+ PhysPageDesc *p;
+ unsigned long addr1;
+
+ while (len > 0) {
+ page = addr & TARGET_PAGE_MASK;
+ l = (page + TARGET_PAGE_SIZE) - addr;
+ if (l > len)
+ l = len;
+
+ if (done || bounce.buffer) {
+ break;
+ }
+ bounce.buffer = qemu_memalign(TARGET_PAGE_SIZE, TARGET_PAGE_SIZE);
+ bounce.addr = addr;
+ bounce.len = l;
+ if (!is_write) {
+ cpu_physical_memory_rw(addr, bounce.buffer, l, 0);
+ }
+ ptr = bounce.buffer;
+
+ if (!done) {
+ ret = ptr;
+ } else if (ret + done != ptr) {
+ break;
+ }
+
+ len -= l;
+ addr += l;
+ done += l;
+ }
+ *plen = done;
+ return ret;
+}
+
+/* Unmaps a memory region previously mapped by cpu_physical_memory_map().
+ * Will also mark the memory as dirty if is_write == 1. access_len gives
+ * the amount of memory that was actually read or written by the caller.
+ */
+void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len,
+ int is_write, target_phys_addr_t access_len)
+{
+ assert(buffer == bounce.buffer);
+ if (is_write) {
+ cpu_physical_memory_write(bounce.addr, bounce.buffer, access_len);
+ }
+ qemu_free(bounce.buffer);
+ bounce.buffer = NULL;
+ cpu_notify_map_clients();
+}
+#endif
--
1.6.0.2



--
yamahata

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