Am 31.10.2011 07:06, schrieb David Gibson:
From: Eduard - Gabriel Munteanu<address@hidden>
This updates the eepro100 device emulation to use the explicit PCI DMA
functions, instead of directly calling physical memory access functions.
Signed-off-by: Eduard - Gabriel Munteanu<address@hidden>
Signed-off-by: David Gibson<address@hidden>
Signed-off-by: Alexey Kardashevskiy<address@hidden>
---
hw/eepro100.c | 121 +++++++++++++++++++++++----------------------------------
1 files changed, 49 insertions(+), 72 deletions(-)
diff --git a/hw/eepro100.c b/hw/eepro100.c
index 4e3c52f..7d59e71 100644
--- a/hw/eepro100.c
+++ b/hw/eepro100.c
@@ -46,6 +46,7 @@
#include "net.h"
#include "eeprom93xx.h"
#include "sysemu.h"
+#include "dma.h"
/* QEMU sends frames smaller than 60 bytes to ethernet nics.
* Such frames are rejected by real nics and their emulations.
@@ -315,38 +316,6 @@ static const uint16_t eepro100_mdi_mask[] = {
0xffff, 0xffff, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
};
-/* Read a 16 bit little endian value from physical memory. */
-static uint16_t e100_ldw_le_phys(target_phys_addr_t addr)
-{
- /* Load 16 bit (little endian) word from emulated hardware. */
- uint16_t val;
- cpu_physical_memory_read(addr,&val, sizeof(val));
- return le16_to_cpu(val);
-}
-
-/* Read a 32 bit little endian value from physical memory. */
-static uint32_t e100_ldl_le_phys(target_phys_addr_t addr)
-{
- /* Load 32 bit (little endian) word from emulated hardware. */
- uint32_t val;
- cpu_physical_memory_read(addr,&val, sizeof(val));
- return le32_to_cpu(val);
-}
-
-/* Write a 16 bit little endian value to physical memory. */
-static void e100_stw_le_phys(target_phys_addr_t addr, uint16_t val)
-{
- val = cpu_to_le16(val);
- cpu_physical_memory_write(addr,&val, sizeof(val));
-}
-
-/* Write a 32 bit little endian value to physical memory. */
-static void e100_stl_le_phys(target_phys_addr_t addr, uint32_t val)
-{
- val = cpu_to_le32(val);
- cpu_physical_memory_write(addr,&val, sizeof(val));
-}
-
#define POLYNOMIAL 0x04c11db6
/* From FreeBSD */
@@ -744,21 +713,26 @@ static void dump_statistics(EEPRO100State * s)
* values which really matter.
* Number of data should check configuration!!!
*/
- cpu_physical_memory_write(s->statsaddr,&s->statistics, s->stats_size);
- e100_stl_le_phys(s->statsaddr + 0, s->statistics.tx_good_frames);
- e100_stl_le_phys(s->statsaddr + 36, s->statistics.rx_good_frames);
- e100_stl_le_phys(s->statsaddr + 48, s->statistics.rx_resource_errors);
- e100_stl_le_phys(s->statsaddr + 60, s->statistics.rx_short_frame_errors);
+ pci_dma_write(&s->dev, s->statsaddr,
+ (uint8_t *)&s->statistics, s->stats_size);
The type cast is not needed and should be removed.
+ stl_le_pci_dma(&s->dev, s->statsaddr + 0,
+ s->statistics.tx_good_frames);
+ stl_le_pci_dma(&s->dev, s->statsaddr + 36,
+ s->statistics.rx_good_frames);
+ stl_le_pci_dma(&s->dev, s->statsaddr + 48,
+ s->statistics.rx_resource_errors);
+ stl_le_pci_dma(&s->dev, s->statsaddr + 60,
+ s->statistics.rx_short_frame_errors);
#if 0
- e100_stw_le_phys(s->statsaddr + 76, s->statistics.xmt_tco_frames);
- e100_stw_le_phys(s->statsaddr + 78, s->statistics.rcv_tco_frames);
+ stw_le_pci_dma(&s->dev, s->statsaddr + 76, s->statistics.xmt_tco_frames);
+ stw_le_pci_dma(&s->dev, s->statsaddr + 78, s->statistics.rcv_tco_frames);
missing("CU dump statistical counters");
#endif
}
static void read_cb(EEPRO100State *s)
{
- cpu_physical_memory_read(s->cb_address,&s->tx, sizeof(s->tx));
+ pci_dma_read(&s->dev, s->cb_address, (uint8_t *)&s->tx, sizeof(s->tx));
The type cast is not needed and should be removed.
s->tx.status = le16_to_cpu(s->tx.status);
s->tx.command = le16_to_cpu(s->tx.command);
s->tx.link = le32_to_cpu(s->tx.link);
@@ -788,18 +762,17 @@ static void tx_command(EEPRO100State *s)
}
assert(tcb_bytes<= sizeof(buf));
while (size< tcb_bytes) {
- uint32_t tx_buffer_address = e100_ldl_le_phys(tbd_address);
- uint16_t tx_buffer_size = e100_ldw_le_phys(tbd_address + 4);
+ uint32_t tx_buffer_address = ldl_le_pci_dma(&s->dev, tbd_address);
+ uint16_t tx_buffer_size = lduw_le_pci_dma(&s->dev, tbd_address + 4);
#if 0
- uint16_t tx_buffer_el = e100_ldw_le_phys(tbd_address + 6);
+ uint16_t tx_buffer_el = lduw_le_pci_dma(&s->dev, tbd_address + 6);
#endif
tbd_address += 8;
TRACE(RXTX, logout
("TBD (simplified mode): buffer address 0x%08x, size 0x%04x\n",
tx_buffer_address, tx_buffer_size));
tx_buffer_size = MIN(tx_buffer_size, sizeof(buf) - size);
- cpu_physical_memory_read(tx_buffer_address,&buf[size],
- tx_buffer_size);
+ pci_dma_read(&s->dev, tx_buffer_address,&buf[size], tx_buffer_size);
size += tx_buffer_size;
}
if (tbd_array == 0xffffffff) {
@@ -810,16 +783,19 @@ static void tx_command(EEPRO100State *s)
if (s->has_extended_tcb_support&& !(s->configuration[6]& BIT(4))) {
/* Extended Flexible TCB. */
for (; tbd_count< 2; tbd_count++) {
- uint32_t tx_buffer_address = e100_ldl_le_phys(tbd_address);
- uint16_t tx_buffer_size = e100_ldw_le_phys(tbd_address + 4);
- uint16_t tx_buffer_el = e100_ldw_le_phys(tbd_address + 6);
+ uint32_t tx_buffer_address = ldl_le_pci_dma(&s->dev,
+ tbd_address);
+ uint16_t tx_buffer_size = lduw_le_pci_dma(&s->dev,
+ tbd_address + 4);
+ uint16_t tx_buffer_el = lduw_le_pci_dma(&s->dev,
+ tbd_address + 6);
tbd_address += 8;
TRACE(RXTX, logout
("TBD (extended flexible mode): buffer address 0x%08x, size 0x%04x\n",
tx_buffer_address, tx_buffer_size));
tx_buffer_size = MIN(tx_buffer_size, sizeof(buf) - size);
- cpu_physical_memory_read(tx_buffer_address,&buf[size],
- tx_buffer_size);
+ pci_dma_read(&s->dev, tx_buffer_address,
+&buf[size], tx_buffer_size);
size += tx_buffer_size;
if (tx_buffer_el& 1) {
break;
@@ -828,16 +804,16 @@ static void tx_command(EEPRO100State *s)
}
tbd_address = tbd_array;
for (; tbd_count< s->tx.tbd_count; tbd_count++) {
- uint32_t tx_buffer_address = e100_ldl_le_phys(tbd_address);
- uint16_t tx_buffer_size = e100_ldw_le_phys(tbd_address + 4);
- uint16_t tx_buffer_el = e100_ldw_le_phys(tbd_address + 6);
+ uint32_t tx_buffer_address = ldl_le_pci_dma(&s->dev, tbd_address);
+ uint16_t tx_buffer_size = lduw_le_pci_dma(&s->dev, tbd_address + 4);
+ uint16_t tx_buffer_el = lduw_le_pci_dma(&s->dev, tbd_address + 6);
tbd_address += 8;
TRACE(RXTX, logout
("TBD (flexible mode): buffer address 0x%08x, size 0x%04x\n",
tx_buffer_address, tx_buffer_size));
tx_buffer_size = MIN(tx_buffer_size, sizeof(buf) - size);
- cpu_physical_memory_read(tx_buffer_address,&buf[size],
- tx_buffer_size);
+ pci_dma_read(&s->dev, tx_buffer_address,
+&buf[size], tx_buffer_size);
size += tx_buffer_size;
if (tx_buffer_el& 1) {
break;
@@ -862,7 +838,7 @@ static void set_multicast_list(EEPRO100State *s)
TRACE(OTHER, logout("multicast list, multicast count = %u\n", multicast_count));
for (i = 0; i< multicast_count; i += 6) {
uint8_t multicast_addr[6];
- cpu_physical_memory_read(s->cb_address + 10 + i, multicast_addr, 6);
+ pci_dma_read(&s->dev, s->cb_address + 10 + i, multicast_addr, 6);
TRACE(OTHER, logout("multicast entry %s\n", nic_dump(multicast_addr, 6)));
unsigned mcast_idx = compute_mcast_idx(multicast_addr);
assert(mcast_idx< 64);
@@ -896,12 +872,12 @@ static void action_command(EEPRO100State *s)
/* Do nothing. */
break;
case CmdIASetup:
- cpu_physical_memory_read(s->cb_address + 8,&s->conf.macaddr.a[0], 6);
+ pci_dma_read(&s->dev, s->cb_address + 8,&s->conf.macaddr.a[0], 6);
TRACE(OTHER, logout("macaddr: %s\n", nic_dump(&s->conf.macaddr.a[0], 6)));
break;
case CmdConfigure:
- cpu_physical_memory_read(s->cb_address + 8,&s->configuration[0],
- sizeof(s->configuration));
+ pci_dma_read(&s->dev, s->cb_address + 8,
+&s->configuration[0], sizeof(s->configuration));
TRACE(OTHER, logout("configuration: %s\n",
nic_dump(&s->configuration[0], 16)));
TRACE(OTHER, logout("configuration: %s\n",
@@ -938,7 +914,8 @@ static void action_command(EEPRO100State *s)
break;
}
/* Write new status. */
- e100_stw_le_phys(s->cb_address, s->tx.status | ok_status | STATUS_C);
+ stw_le_pci_dma(&s->dev, s->cb_address,
+ s->tx.status | ok_status | STATUS_C);
if (bit_i) {
/* CU completed action. */
eepro100_cx_interrupt(s);
@@ -1005,7 +982,7 @@ static void eepro100_cu_command(EEPRO100State * s,
uint8_t val)
/* Dump statistical counters. */
TRACE(OTHER, logout("val=0x%02x (dump stats)\n", val));
dump_statistics(s);
- e100_stl_le_phys(s->statsaddr + s->stats_size, 0xa005);
+ stl_le_pci_dma(&s->dev, s->statsaddr + s->stats_size, 0xa005);
break;
case CU_CMD_BASE:
/* Load CU base. */
@@ -1016,7 +993,7 @@ static void eepro100_cu_command(EEPRO100State * s,
uint8_t val)
/* Dump and reset statistical counters. */
TRACE(OTHER, logout("val=0x%02x (dump stats and reset)\n", val));
dump_statistics(s);
- e100_stl_le_phys(s->statsaddr + s->stats_size, 0xa007);
+ stl_le_pci_dma(&s->dev, s->statsaddr + s->stats_size, 0xa007);
memset(&s->statistics, 0, sizeof(s->statistics));
break;
case CU_SRESUME:
@@ -1310,10 +1287,10 @@ static void eepro100_write_port(EEPRO100State *s)
case PORT_SELFTEST:
TRACE(OTHER, logout("selftest address=0x%08x\n", address));
eepro100_selftest_t data;
- cpu_physical_memory_read(address,&data, sizeof(data));
+ pci_dma_read(&s->dev, address, (uint8_t *)&data, sizeof(data));
The type cast is not needed and should be removed.
data.st_sign = 0xffffffff;
data.st_result = 0;
- cpu_physical_memory_write(address,&data, sizeof(data));
+ pci_dma_write(&s->dev, address, (uint8_t *)&data, sizeof(data));
The type cast is not needed and should be removed.
break;
case PORT_SELECTIVE_RESET:
TRACE(OTHER, logout("selective reset, selftest address=0x%08x\n", address));
@@ -1729,8 +1706,8 @@ static ssize_t nic_receive(VLANClientState *nc, const
uint8_t * buf, size_t size
}
/* !!! */
eepro100_rx_t rx;
- cpu_physical_memory_read(s->ru_base + s->ru_offset,&rx,
- sizeof(eepro100_rx_t));
+ pci_dma_read(&s->dev, s->ru_base + s->ru_offset,
+ (uint8_t *)&rx, sizeof(eepro100_rx_t));
The type cast is not needed and should be removed.
uint16_t rfd_command = le16_to_cpu(rx.command);
uint16_t rfd_size = le16_to_cpu(rx.size);
@@ -1746,10 +1723,10 @@ static ssize_t nic_receive(VLANClientState *nc, const
uint8_t * buf, size_t size
#endif
TRACE(OTHER, logout("command 0x%04x, link 0x%08x, addr 0x%08x, size %u\n",
rfd_command, rx.link, rx.rx_buf_addr, rfd_size));
- e100_stw_le_phys(s->ru_base + s->ru_offset +
- offsetof(eepro100_rx_t, status), rfd_status);
- e100_stw_le_phys(s->ru_base + s->ru_offset +
- offsetof(eepro100_rx_t, count), size);
+ stw_le_pci_dma(&s->dev, s->ru_base + s->ru_offset +
+ offsetof(eepro100_rx_t, status), rfd_status);
+ stw_le_pci_dma(&s->dev, s->ru_base + s->ru_offset +
+ offsetof(eepro100_rx_t, count), size);
/* Early receive interrupt not supported. */
#if 0
eepro100_er_interrupt(s);
@@ -1763,8 +1740,8 @@ static ssize_t nic_receive(VLANClientState *nc, const
uint8_t * buf, size_t size
#if 0
assert(!(s->configuration[17]& BIT(0)));
#endif
- cpu_physical_memory_write(s->ru_base + s->ru_offset +
- sizeof(eepro100_rx_t), buf, size);
+ pci_dma_write(&s->dev, s->ru_base + s->ru_offset +
+ sizeof(eepro100_rx_t), buf, size);
s->statistics.rx_good_frames++;
eepro100_fr_interrupt(s);
s->ru_offset = le32_to_cpu(rx.link);
Hi,
the patch looks reasonable. I only suggest a formal change:
There are lots of unnecessary type casts in several of your patches.
I marked them here, but they should be removed anywhere.