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Add a phy-num property to the i.MX FEC emulator

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We need a solution to use an Ethernet PHY that is not the first device
on the MDIO bus (device 0 on MDIO bus).

As an example with the i.MX6UL the NXP SOC has 2 Ethernet devices but
only one MDIO bus on which the 2 related PHY are connected but at unique
addresses.

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Message-id: a1a5c0e139d1c763194b8020573dcb6025daeefa.1593296112.git.jcd@tribudubois.net
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Jean-Christophe Dubois 2020-07-03 16:59:41 +01:00 committed by Peter Maydell
parent 4abf70a661
commit 461c51ad42
3 changed files with 20 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
hw/net/imx_fec.c
View File

@ -280,12 +280,16 @@ static void imx_phy_reset(IMXFECState *s)
static uint32_t imx_phy_read(IMXFECState *s, int reg)
{
uint32_t val;
uint32_t phy = reg / 32;
if (reg > 31) {
/* we only advertise one phy */
if (phy != s->phy_num) {
qemu_log_mask(LOG_GUEST_ERROR, "[%s.phy]%s: Bad phy num %u\n",
TYPE_IMX_FEC, __func__, phy);
return 0;
}
reg %= 32;
switch (reg) {
case 0: /* Basic Control */
val = s->phy_control;
@ -331,20 +335,25 @@ static uint32_t imx_phy_read(IMXFECState *s, int reg)
break;
}
trace_imx_phy_read(val, reg);
trace_imx_phy_read(val, phy, reg);
return val;
}
static void imx_phy_write(IMXFECState *s, int reg, uint32_t val)
{
trace_imx_phy_write(val, reg);
uint32_t phy = reg / 32;
if (reg > 31) {
/* we only advertise one phy */
if (phy != s->phy_num) {
qemu_log_mask(LOG_GUEST_ERROR, "[%s.phy]%s: Bad phy num %u\n",
TYPE_IMX_FEC, __func__, phy);
return;
}
reg %= 32;
trace_imx_phy_write(val, phy, reg);
switch (reg) {
case 0: /* Basic Control */
if (val & 0x8000) {
@ -926,7 +935,7 @@ static void imx_eth_write(void *opaque, hwaddr offset, uint64_t value,
extract32(value,
18, 10)));
} else {
/* This a write operation */
/* This is a write operation */
imx_phy_write(s, extract32(value, 18, 10), extract32(value, 0, 16));
}
/* raise the interrupt as the PHY operation is done */
@ -1315,6 +1324,7 @@ static void imx_eth_realize(DeviceState *dev, Error **errp)
static Property imx_eth_properties[] = {
DEFINE_NIC_PROPERTIES(IMXFECState, conf),
DEFINE_PROP_UINT32("tx-ring-num", IMXFECState, tx_ring_num, 1),
DEFINE_PROP_UINT32("phy-num", IMXFECState, phy_num, 0),
DEFINE_PROP_END_OF_LIST(),
};

4
hw/net/trace-events
View File

@ -413,8 +413,8 @@ i82596_set_multicast(uint16_t count) "Added %d multicast entries"
i82596_channel_attention(void *s) "%p: Received CHANNEL ATTENTION"
# imx_fec.c
imx_phy_read(uint32_t val, int reg) "0x%04"PRIx32" <= reg[%d]"
imx_phy_write(uint32_t val, int reg) "0x%04"PRIx32" => reg[%d]"
imx_phy_read(uint32_t val, int phy, int reg) "0x%04"PRIx32" <= phy[%d].reg[%d]"
imx_phy_write(uint32_t val, int phy, int reg) "0x%04"PRIx32" => phy[%d].reg[%d]"
imx_phy_update_link(const char *s) "%s"
imx_phy_reset(void) ""
imx_fec_read_bd(uint64_t addr, int flags, int len, int data) "tx_bd 0x%"PRIx64" flags 0x%04x len %d data 0x%08x"

1
include/hw/net/imx_fec.h
View File

@ -268,6 +268,7 @@ typedef struct IMXFECState {
uint32_t phy_advertise;
uint32_t phy_int;
uint32_t phy_int_mask;
uint32_t phy_num;
bool is_fec;