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eepro100: Use PCI DMA stub functions 

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 <eduard.munteanu@linux360.ro>
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Eduard - Gabriel Munteanu 2011-10-31 17:06:49 +11:00 committed by Anthony Liguori
parent 3ada003aee
commit 16ef60c9a8
1 changed files with 49 additions and 72 deletions
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115
hw/eepro100.c
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@ -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);
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));
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));
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));
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));
uint16_t rfd_command = le16_to_cpu(rx.command);
uint16_t rfd_size = le16_to_cpu(rx.size);
@ -1746,9 +1723,9 @@ 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 +
stw_le_pci_dma(&s->dev, s->ru_base + s->ru_offset +
offsetof(eepro100_rx_t, status), rfd_status);
e100_stw_le_phys(s->ru_base + s->ru_offset +
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
@ -1763,7 +1740,7 @@ 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 +
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);