From 84f7ad852df7090dcb915cfe774918954c011891 Mon Sep 17 00:00:00 2001
From: Xiao Wang <jasowang@redhat.com>
Date: Tue, 7 Jul 2015 09:18:15 +0200
Subject: [PATCH 127/217] exec.c: Make address_space_rw take transaction
attributes
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Message-id: <1436260751-25015-13-git-send-email-jasowang@redhat.com>
Patchwork-id: 66787
O-Subject: [RHEL7.2 qemu-kvm-rhev PATCH V2 12/68] exec.c: Make address_space_rw take transaction attributes
Bugzilla: 1227343
RH-Acked-by: Michael S. Tsirkin <mst@redhat.com>
RH-Acked-by: David Gibson <dgibson@redhat.com>
RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>
From: Peter Maydell <peter.maydell@linaro.org>
Make address_space_rw take transaction attributes, rather
than always using the 'unspecified' attributes.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
(cherry picked from commit 5c9eb0286c819c1836220a32f2e1a7b5004ac79a)
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
dma-helpers.c | 3 ++-
exec.c | 51 ++++++++++++++++++++++++++----------------------
hw/mips/mips_jazz.c | 6 ++++--
hw/pci-host/prep.c | 6 ++++--
include/exec/memory.h | 31 ++++++++++++++++++-----------
include/sysemu/dma.h | 3 ++-
ioport.c | 16 +++++++++------
kvm-all.c | 3 ++-
scripts/coverity-model.c | 8 +++++---
9 files changed, 77 insertions(+), 50 deletions(-)
diff --git a/dma-helpers.c b/dma-helpers.c
index 6918572..33b1983 100644
--- a/dma-helpers.c
+++ b/dma-helpers.c
@@ -28,7 +28,8 @@ int dma_memory_set(AddressSpace *as, dma_addr_t addr, uint8_t c, dma_addr_t len)
memset(fillbuf, c, FILLBUF_SIZE);
while (len > 0) {
l = len < FILLBUF_SIZE ? len : FILLBUF_SIZE;
- error |= address_space_rw(as, addr, fillbuf, l, true);
+ error |= address_space_rw(as, addr, MEMTXATTRS_UNSPECIFIED,
+ fillbuf, l, true);
len -= l;
addr += l;
}
diff --git a/exec.c b/exec.c
index bba6f26..9811a9c 100644
--- a/exec.c
+++ b/exec.c
@@ -1946,13 +1946,16 @@ static MemTxResult subpage_read(void *opaque, hwaddr addr, uint64_t *data,
{
subpage_t *subpage = opaque;
uint8_t buf[8];
+ MemTxResult res;
#if defined(DEBUG_SUBPAGE)
printf("%s: subpage %p len %u addr " TARGET_FMT_plx "\n", __func__,
subpage, len, addr);
#endif
- if (address_space_read(subpage->as, addr + subpage->base, buf, len)) {
- return MEMTX_DECODE_ERROR;
+ res = address_space_read(subpage->as, addr + subpage->base,
+ attrs, buf, len);
+ if (res) {
+ return res;
}
switch (len) {
case 1:
@@ -1999,10 +2002,8 @@ static MemTxResult subpage_write(void *opaque, hwaddr addr,
default:
abort();
}
- if (address_space_write(subpage->as, addr + subpage->base, buf, len)) {
- return MEMTX_DECODE_ERROR;
- }
- return MEMTX_OK;
+ return address_space_write(subpage->as, addr + subpage->base,
+ attrs, buf, len);
}
static bool subpage_accepts(void *opaque, hwaddr addr,
@@ -2313,8 +2314,8 @@ static int memory_access_size(MemoryRegion *mr, unsigned l, hwaddr addr)
return l;
}
-bool address_space_rw(AddressSpace *as, hwaddr addr, uint8_t *buf,
- int len, bool is_write)
+MemTxResult address_space_rw(AddressSpace *as, hwaddr addr, MemTxAttrs attrs,
+ uint8_t *buf, int len, bool is_write)
{
hwaddr l;
uint8_t *ptr;
@@ -2322,7 +2323,6 @@ bool address_space_rw(AddressSpace *as, hwaddr addr, uint8_t *buf,
hwaddr addr1;
MemoryRegion *mr;
MemTxResult result = MEMTX_OK;
- MemTxAttrs attrs = MEMTXATTRS_UNSPECIFIED;
while (len > 0) {
l = len;
@@ -2414,22 +2414,24 @@ bool address_space_rw(AddressSpace *as, hwaddr addr, uint8_t *buf,
return result;
}
-bool address_space_write(AddressSpace *as, hwaddr addr,
- const uint8_t *buf, int len)
+MemTxResult address_space_write(AddressSpace *as, hwaddr addr, MemTxAttrs attrs,
+ const uint8_t *buf, int len)
{
- return address_space_rw(as, addr, (uint8_t *)buf, len, true);
+ return address_space_rw(as, addr, attrs, (uint8_t *)buf, len, true);
}
-bool address_space_read(AddressSpace *as, hwaddr addr, uint8_t *buf, int len)
+MemTxResult address_space_read(AddressSpace *as, hwaddr addr, MemTxAttrs attrs,
+ uint8_t *buf, int len)
{
- return address_space_rw(as, addr, buf, len, false);
+ return address_space_rw(as, addr, attrs, buf, len, false);
}
void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf,
int len, int is_write)
{
- address_space_rw(&address_space_memory, addr, buf, len, is_write);
+ address_space_rw(&address_space_memory, addr, MEMTXATTRS_UNSPECIFIED,
+ buf, len, is_write);
}
enum write_rom_type {
@@ -2600,7 +2602,8 @@ void *address_space_map(AddressSpace *as,
memory_region_ref(mr);
bounce.mr = mr;
if (!is_write) {
- address_space_read(as, addr, bounce.buffer, l);
+ address_space_read(as, addr, MEMTXATTRS_UNSPECIFIED,
+ bounce.buffer, l);
}
*plen = l;
@@ -2653,7 +2656,8 @@ void address_space_unmap(AddressSpace *as, void *buffer, hwaddr len,
return;
}
if (is_write) {
- address_space_write(as, bounce.addr, bounce.buffer, access_len);
+ address_space_write(as, bounce.addr, MEMTXATTRS_UNSPECIFIED,
+ bounce.buffer, access_len);
}
qemu_vfree(bounce.buffer);
bounce.buffer = NULL;
@@ -2797,7 +2801,7 @@ uint64_t ldq_be_phys(AddressSpace *as, hwaddr addr)
uint32_t ldub_phys(AddressSpace *as, hwaddr addr)
{
uint8_t val;
- address_space_rw(as, addr, &val, 1, 0);
+ address_space_rw(as, addr, MEMTXATTRS_UNSPECIFIED, &val, 1, 0);
return val;
}
@@ -2954,7 +2958,7 @@ void stl_be_phys(AddressSpace *as, hwaddr addr, uint32_t val)
void stb_phys(AddressSpace *as, hwaddr addr, uint32_t val)
{
uint8_t v = val;
- address_space_rw(as, addr, &v, 1, 1);
+ address_space_rw(as, addr, MEMTXATTRS_UNSPECIFIED, &v, 1, 1);
}
/* warning: addr must be aligned */
@@ -3018,19 +3022,19 @@ void stw_be_phys(AddressSpace *as, hwaddr addr, uint32_t val)
void stq_phys(AddressSpace *as, hwaddr addr, uint64_t val)
{
val = tswap64(val);
- address_space_rw(as, addr, (void *) &val, 8, 1);
+ address_space_rw(as, addr, MEMTXATTRS_UNSPECIFIED, (void *) &val, 8, 1);
}
void stq_le_phys(AddressSpace *as, hwaddr addr, uint64_t val)
{
val = cpu_to_le64(val);
- address_space_rw(as, addr, (void *) &val, 8, 1);
+ address_space_rw(as, addr, MEMTXATTRS_UNSPECIFIED, (void *) &val, 8, 1);
}
void stq_be_phys(AddressSpace *as, hwaddr addr, uint64_t val)
{
val = cpu_to_be64(val);
- address_space_rw(as, addr, (void *) &val, 8, 1);
+ address_space_rw(as, addr, MEMTXATTRS_UNSPECIFIED, (void *) &val, 8, 1);
}
/* virtual memory access for debug (includes writing to ROM) */
@@ -3054,7 +3058,8 @@ int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr,
if (is_write) {
cpu_physical_memory_write_rom(cpu->as, phys_addr, buf, l);
} else {
- address_space_rw(cpu->as, phys_addr, buf, l, 0);
+ address_space_rw(cpu->as, phys_addr, MEMTXATTRS_UNSPECIFIED,
+ buf, l, 0);
}
len -= l;
buf += l;
diff --git a/hw/mips/mips_jazz.c b/hw/mips/mips_jazz.c
index 07f3c27..2c153e0 100644
--- a/hw/mips/mips_jazz.c
+++ b/hw/mips/mips_jazz.c
@@ -61,7 +61,8 @@ static void main_cpu_reset(void *opaque)
static uint64_t rtc_read(void *opaque, hwaddr addr, unsigned size)
{
uint8_t val;
- address_space_read(&address_space_memory, 0x90000071, &val, 1);
+ address_space_read(&address_space_memory, 0x90000071,
+ MEMTXATTRS_UNSPECIFIED, &val, 1);
return val;
}
@@ -69,7 +70,8 @@ static void rtc_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
uint8_t buf = val & 0xff;
- address_space_write(&address_space_memory, 0x90000071, &buf, 1);
+ address_space_write(&address_space_memory, 0x90000071,
+ MEMTXATTRS_UNSPECIFIED, &buf, 1);
}
static const MemoryRegionOps rtc_ops = {
diff --git a/hw/pci-host/prep.c b/hw/pci-host/prep.c
index 6cea6ff..c63f45d 100644
--- a/hw/pci-host/prep.c
+++ b/hw/pci-host/prep.c
@@ -140,7 +140,8 @@ static uint64_t raven_io_read(void *opaque, hwaddr addr,
uint8_t buf[4];
addr = raven_io_address(s, addr);
- address_space_read(&s->pci_io_as, addr + 0x80000000, buf, size);
+ address_space_read(&s->pci_io_as, addr + 0x80000000,
+ MEMTXATTRS_UNSPECIFIED, buf, size);
if (size == 1) {
return buf[0];
@@ -171,7 +172,8 @@ static void raven_io_write(void *opaque, hwaddr addr,
g_assert_not_reached();
}
- address_space_write(&s->pci_io_as, addr + 0x80000000, buf, size);
+ address_space_write(&s->pci_io_as, addr + 0x80000000,
+ MEMTXATTRS_UNSPECIFIED, buf, size);
}
static const MemoryRegionOps raven_io_ops = {
diff --git a/include/exec/memory.h b/include/exec/memory.h
index a289eec..660908e 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -1120,41 +1120,50 @@ void address_space_destroy(AddressSpace *as);
/**
* address_space_rw: read from or write to an address space.
*
- * Return true if the operation hit any unassigned memory or encountered an
- * IOMMU fault.
+ * Return a MemTxResult indicating whether the operation succeeded
+ * or failed (eg unassigned memory, device rejected the transaction,
+ * IOMMU fault).
*
* @as: #AddressSpace to be accessed
* @addr: address within that address space
+ * @attrs: memory transaction attributes
* @buf: buffer with the data transferred
* @is_write: indicates the transfer direction
*/
-bool address_space_rw(AddressSpace *as, hwaddr addr, uint8_t *buf,
- int len, bool is_write);
+MemTxResult address_space_rw(AddressSpace *as, hwaddr addr,
+ MemTxAttrs attrs, uint8_t *buf,
+ int len, bool is_write);
/**
* address_space_write: write to address space.
*
- * Return true if the operation hit any unassigned memory or encountered an
- * IOMMU fault.
+ * Return a MemTxResult indicating whether the operation succeeded
+ * or failed (eg unassigned memory, device rejected the transaction,
+ * IOMMU fault).
*
* @as: #AddressSpace to be accessed
* @addr: address within that address space
+ * @attrs: memory transaction attributes
* @buf: buffer with the data transferred
*/
-bool address_space_write(AddressSpace *as, hwaddr addr,
- const uint8_t *buf, int len);
+MemTxResult address_space_write(AddressSpace *as, hwaddr addr,
+ MemTxAttrs attrs,
+ const uint8_t *buf, int len);
/**
* address_space_read: read from an address space.
*
- * Return true if the operation hit any unassigned memory or encountered an
- * IOMMU fault.
+ * Return a MemTxResult indicating whether the operation succeeded
+ * or failed (eg unassigned memory, device rejected the transaction,
+ * IOMMU fault).
*
* @as: #AddressSpace to be accessed
* @addr: address within that address space
+ * @attrs: memory transaction attributes
* @buf: buffer with the data transferred
*/
-bool address_space_read(AddressSpace *as, hwaddr addr, uint8_t *buf, int len);
+MemTxResult address_space_read(AddressSpace *as, hwaddr addr, MemTxAttrs attrs,
+ uint8_t *buf, int len);
/* address_space_translate: translate an address range into an address space
* into a MemoryRegion and an address range into that section
diff --git a/include/sysemu/dma.h b/include/sysemu/dma.h
index 3f2f4c8..efa8b99 100644
--- a/include/sysemu/dma.h
+++ b/include/sysemu/dma.h
@@ -88,7 +88,8 @@ static inline int dma_memory_rw_relaxed(AddressSpace *as, dma_addr_t addr,
void *buf, dma_addr_t len,
DMADirection dir)
{
- return address_space_rw(as, addr, buf, len, dir == DMA_DIRECTION_FROM_DEVICE);
+ return (bool)address_space_rw(as, addr, MEMTXATTRS_UNSPECIFIED,
+ buf, len, dir == DMA_DIRECTION_FROM_DEVICE);
}
static inline int dma_memory_read_relaxed(AddressSpace *as, dma_addr_t addr,
diff --git a/ioport.c b/ioport.c
index 783a3ae..b345bd9 100644
--- a/ioport.c
+++ b/ioport.c
@@ -64,7 +64,8 @@ void cpu_outb(pio_addr_t addr, uint8_t val)
{
LOG_IOPORT("outb: %04"FMT_pioaddr" %02"PRIx8"\n", addr, val);
trace_cpu_out(addr, val);
- address_space_write(&address_space_io, addr, &val, 1);
+ address_space_write(&address_space_io, addr, MEMTXATTRS_UNSPECIFIED,
+ &val, 1);
}
void cpu_outw(pio_addr_t addr, uint16_t val)
@@ -74,7 +75,8 @@ void cpu_outw(pio_addr_t addr, uint16_t val)
LOG_IOPORT("outw: %04"FMT_pioaddr" %04"PRIx16"\n", addr, val);
trace_cpu_out(addr, val);
stw_p(buf, val);
- address_space_write(&address_space_io, addr, buf, 2);
+ address_space_write(&address_space_io, addr, MEMTXATTRS_UNSPECIFIED,
+ buf, 2);
}
void cpu_outl(pio_addr_t addr, uint32_t val)
@@ -84,14 +86,16 @@ void cpu_outl(pio_addr_t addr, uint32_t val)
LOG_IOPORT("outl: %04"FMT_pioaddr" %08"PRIx32"\n", addr, val);
trace_cpu_out(addr, val);
stl_p(buf, val);
- address_space_write(&address_space_io, addr, buf, 4);
+ address_space_write(&address_space_io, addr, MEMTXATTRS_UNSPECIFIED,
+ buf, 4);
}
uint8_t cpu_inb(pio_addr_t addr)
{
uint8_t val;
- address_space_read(&address_space_io, addr, &val, 1);
+ address_space_read(&address_space_io, addr, MEMTXATTRS_UNSPECIFIED,
+ &val, 1);
trace_cpu_in(addr, val);
LOG_IOPORT("inb : %04"FMT_pioaddr" %02"PRIx8"\n", addr, val);
return val;
@@ -102,7 +106,7 @@ uint16_t cpu_inw(pio_addr_t addr)
uint8_t buf[2];
uint16_t val;
- address_space_read(&address_space_io, addr, buf, 2);
+ address_space_read(&address_space_io, addr, MEMTXATTRS_UNSPECIFIED, buf, 2);
val = lduw_p(buf);
trace_cpu_in(addr, val);
LOG_IOPORT("inw : %04"FMT_pioaddr" %04"PRIx16"\n", addr, val);
@@ -114,7 +118,7 @@ uint32_t cpu_inl(pio_addr_t addr)
uint8_t buf[4];
uint32_t val;
- address_space_read(&address_space_io, addr, buf, 4);
+ address_space_read(&address_space_io, addr, MEMTXATTRS_UNSPECIFIED, buf, 4);
val = ldl_p(buf);
trace_cpu_in(addr, val);
LOG_IOPORT("inl : %04"FMT_pioaddr" %08"PRIx32"\n", addr, val);
diff --git a/kvm-all.c b/kvm-all.c
index adf442d..365ad3f 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -1670,7 +1670,8 @@ static void kvm_handle_io(uint16_t port, void *data, int direction, int size,
uint8_t *ptr = data;
for (i = 0; i < count; i++) {
- address_space_rw(&address_space_io, port, ptr, size,
+ address_space_rw(&address_space_io, port, MEMTXATTRS_UNSPECIFIED,
+ ptr, size,
direction == KVM_EXIT_IO_OUT);
ptr += size;
}
diff --git a/scripts/coverity-model.c b/scripts/coverity-model.c
index cdda259..224d2d1 100644
--- a/scripts/coverity-model.c
+++ b/scripts/coverity-model.c
@@ -46,6 +46,8 @@ typedef struct va_list_str *va_list;
typedef struct AddressSpace AddressSpace;
typedef uint64_t hwaddr;
+typedef uint32_t MemTxResult;
+typedef uint64_t MemTxAttrs;
static void __write(uint8_t *buf, ssize_t len)
{
@@ -65,10 +67,10 @@ static void __read(uint8_t *buf, ssize_t len)
int last = buf[len-1];
}
-bool address_space_rw(AddressSpace *as, hwaddr addr, uint8_t *buf,
- int len, bool is_write)
+MemTxResult address_space_rw(AddressSpace *as, hwaddr addr, MemTxAttrs attrs,
+ uint8_t *buf, int len, bool is_write)
{
- bool result;
+ MemTxResult result;
// TODO: investigate impact of treating reads as producing
// tainted data, with __coverity_tainted_data_argument__(buf).
--
1.8.3.1