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e1000: Use PCI DMA stub functions

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This updates the e1000 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 <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Eduard - Gabriel Munteanu 2011-10-31 17:06:52 +11:00 committed by Anthony Liguori
parent 3204db98de
commit 62ecbd353d
1 changed files with 15 additions and 14 deletions
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29
hw/e1000.c
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@ -31,6 +31,7 @@
#include "net/checksum.h"
#include "loader.h"
#include "sysemu.h"
#include "dma.h"
#include "e1000_hw.h"
@ -465,7 +466,7 @@ process_tx_desc(E1000State *s, struct e1000_tx_desc *dp)
bytes = split_size;
if (tp->size + bytes > msh)
bytes = msh - tp->size;
cpu_physical_memory_read(addr, tp->data + tp->size, bytes);
pci_dma_read(&s->dev, addr, tp->data + tp->size, bytes);
if ((sz = tp->size + bytes) >= hdr && tp->size < hdr)
memmove(tp->header, tp->data, hdr);
tp->size = sz;
@ -480,7 +481,7 @@ process_tx_desc(E1000State *s, struct e1000_tx_desc *dp)
// context descriptor TSE is not set, while data descriptor TSE is set
DBGOUT(TXERR, "TCP segmentaion Error\n");
} else {
cpu_physical_memory_read(addr, tp->data + tp->size, split_size);
pci_dma_read(&s->dev, addr, tp->data + tp->size, split_size);
tp->size += split_size;
}
@ -496,7 +497,7 @@ process_tx_desc(E1000State *s, struct e1000_tx_desc *dp)
}
static uint32_t
txdesc_writeback(target_phys_addr_t base, struct e1000_tx_desc *dp)
txdesc_writeback(E1000State *s, dma_addr_t base, struct e1000_tx_desc *dp)
{
uint32_t txd_upper, txd_lower = le32_to_cpu(dp->lower.data);
@ -505,8 +506,8 @@ txdesc_writeback(target_phys_addr_t base, struct e1000_tx_desc *dp)
txd_upper = (le32_to_cpu(dp->upper.data) | E1000_TXD_STAT_DD) &
~(E1000_TXD_STAT_EC | E1000_TXD_STAT_LC | E1000_TXD_STAT_TU);
dp->upper.data = cpu_to_le32(txd_upper);
cpu_physical_memory_write(base + ((char *)&dp->upper - (char *)dp),
(void *)&dp->upper, sizeof(dp->upper));
pci_dma_write(&s->dev, base + ((char *)&dp->upper - (char *)dp),
(void *)&dp->upper, sizeof(dp->upper));
return E1000_ICR_TXDW;
}
@ -521,7 +522,7 @@ static uint64_t tx_desc_base(E1000State *s)
static void
start_xmit(E1000State *s)
{
target_phys_addr_t base;
dma_addr_t base;
struct e1000_tx_desc desc;
uint32_t tdh_start = s->mac_reg[TDH], cause = E1000_ICS_TXQE;
@ -533,14 +534,14 @@ start_xmit(E1000State *s)
while (s->mac_reg[TDH] != s->mac_reg[TDT]) {
base = tx_desc_base(s) +
sizeof(struct e1000_tx_desc) * s->mac_reg[TDH];
cpu_physical_memory_read(base, (void *)&desc, sizeof(desc));
pci_dma_read(&s->dev, base, (void *)&desc, sizeof(desc));
DBGOUT(TX, "index %d: %p : %x %x\n", s->mac_reg[TDH],
(void *)(intptr_t)desc.buffer_addr, desc.lower.data,
desc.upper.data);
process_tx_desc(s, &desc);
cause |= txdesc_writeback(base, &desc);
cause |= txdesc_writeback(s, base, &desc);
if (++s->mac_reg[TDH] * sizeof(desc) >= s->mac_reg[TDLEN])
s->mac_reg[TDH] = 0;
@ -668,7 +669,7 @@ e1000_receive(VLANClientState *nc, const uint8_t *buf, size_t size)
{
E1000State *s = DO_UPCAST(NICState, nc, nc)->opaque;
struct e1000_rx_desc desc;
target_phys_addr_t base;
dma_addr_t base;
unsigned int n, rdt;
uint32_t rdh_start;
uint16_t vlan_special = 0;
@ -713,7 +714,7 @@ e1000_receive(VLANClientState *nc, const uint8_t *buf, size_t size)
desc_size = s->rxbuf_size;
}
base = rx_desc_base(s) + sizeof(desc) * s->mac_reg[RDH];
cpu_physical_memory_read(base, (void *)&desc, sizeof(desc));
pci_dma_read(&s->dev, base, (void *)&desc, sizeof(desc));
desc.special = vlan_special;
desc.status |= (vlan_status | E1000_RXD_STAT_DD);
if (desc.buffer_addr) {
@ -722,9 +723,9 @@ e1000_receive(VLANClientState *nc, const uint8_t *buf, size_t size)
if (copy_size > s->rxbuf_size) {
copy_size = s->rxbuf_size;
}
cpu_physical_memory_write(le64_to_cpu(desc.buffer_addr),
(void *)(buf + desc_offset + vlan_offset),
copy_size);
pci_dma_write(&s->dev, le64_to_cpu(desc.buffer_addr),
(void *)(buf + desc_offset + vlan_offset),
copy_size);
}
desc_offset += desc_size;
desc.length = cpu_to_le16(desc_size);
@ -738,7 +739,7 @@ e1000_receive(VLANClientState *nc, const uint8_t *buf, size_t size)
} else { // as per intel docs; skip descriptors with null buf addr
DBGOUT(RX, "Null RX descriptor!!\n");
}
cpu_physical_memory_write(base, (void *)&desc, sizeof(desc));
pci_dma_write(&s->dev, base, (void *)&desc, sizeof(desc));
if (++s->mac_reg[RDH] * sizeof(desc) >= s->mac_reg[RDLEN])
s->mac_reg[RDH] = 0;