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dp8393x: manage big endian bus
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This is needed by Quadra 800, this card can run on little-endian
or big-endian bus.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Tested-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Hervé Poussineau <hpoussin@reactos.org>
Message-Id: <20191026164546.30020-5-laurent@vivier.eu>
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@vivier
vivier committed Oct 28, 2019
1 parent 74d71ea commit be92084
Showing 1 changed file with 57 additions and 31 deletions.
88 changes: 57 additions & 31 deletions hw/net/dp8393x.c
View file
Expand Up @@ -153,6 +153,7 @@ typedef struct dp8393xState {

/* Hardware */
uint8_t it_shift;
bool big_endian;
qemu_irq irq;
#ifdef DEBUG_SONIC
int irq_level;
Expand Down Expand Up @@ -223,6 +224,29 @@ static uint32_t dp8393x_wt(dp8393xState *s)
return s->regs[SONIC_WT1] << 16 | s->regs[SONIC_WT0];
}

static uint16_t dp8393x_get(dp8393xState *s, int width, uint16_t *base,
int offset)
{
uint16_t val;

if (s->big_endian) {
val = be16_to_cpu(base[offset * width + width - 1]);
} else {
val = le16_to_cpu(base[offset * width]);
}
return val;
}

static void dp8393x_put(dp8393xState *s, int width, uint16_t *base, int offset,
uint16_t val)
{
if (s->big_endian) {
base[offset * width + width - 1] = cpu_to_be16(val);
} else {
base[offset * width] = cpu_to_le16(val);
}
}

static void dp8393x_update_irq(dp8393xState *s)
{
int level = (s->regs[SONIC_IMR] & s->regs[SONIC_ISR]) ? 1 : 0;
Expand Down Expand Up @@ -254,12 +278,12 @@ static void dp8393x_do_load_cam(dp8393xState *s)
/* Fill current entry */
address_space_rw(&s->as, dp8393x_cdp(s),
MEMTXATTRS_UNSPECIFIED, (uint8_t *)data, size, 0);
s->cam[index][0] = data[1 * width] & 0xff;
s->cam[index][1] = data[1 * width] >> 8;
s->cam[index][2] = data[2 * width] & 0xff;
s->cam[index][3] = data[2 * width] >> 8;
s->cam[index][4] = data[3 * width] & 0xff;
s->cam[index][5] = data[3 * width] >> 8;
s->cam[index][0] = dp8393x_get(s, width, data, 1) & 0xff;
s->cam[index][1] = dp8393x_get(s, width, data, 1) >> 8;
s->cam[index][2] = dp8393x_get(s, width, data, 2) & 0xff;
s->cam[index][3] = dp8393x_get(s, width, data, 2) >> 8;
s->cam[index][4] = dp8393x_get(s, width, data, 3) & 0xff;
s->cam[index][5] = dp8393x_get(s, width, data, 3) >> 8;
DPRINTF("load cam[%d] with %02x%02x%02x%02x%02x%02x\n", index,
s->cam[index][0], s->cam[index][1], s->cam[index][2],
s->cam[index][3], s->cam[index][4], s->cam[index][5]);
Expand All @@ -272,7 +296,7 @@ static void dp8393x_do_load_cam(dp8393xState *s)
/* Read CAM enable */
address_space_rw(&s->as, dp8393x_cdp(s),
MEMTXATTRS_UNSPECIFIED, (uint8_t *)data, size, 0);
s->regs[SONIC_CE] = data[0 * width];
s->regs[SONIC_CE] = dp8393x_get(s, width, data, 0);
DPRINTF("load cam done. cam enable mask 0x%04x\n", s->regs[SONIC_CE]);

/* Done */
Expand All @@ -293,10 +317,10 @@ static void dp8393x_do_read_rra(dp8393xState *s)
MEMTXATTRS_UNSPECIFIED, (uint8_t *)data, size, 0);

/* Update SONIC registers */
s->regs[SONIC_CRBA0] = data[0 * width];
s->regs[SONIC_CRBA1] = data[1 * width];
s->regs[SONIC_RBWC0] = data[2 * width];
s->regs[SONIC_RBWC1] = data[3 * width];
s->regs[SONIC_CRBA0] = dp8393x_get(s, width, data, 0);
s->regs[SONIC_CRBA1] = dp8393x_get(s, width, data, 1);
s->regs[SONIC_RBWC0] = dp8393x_get(s, width, data, 2);
s->regs[SONIC_RBWC1] = dp8393x_get(s, width, data, 3);
DPRINTF("CRBA0/1: 0x%04x/0x%04x, RBWC0/1: 0x%04x/0x%04x\n",
s->regs[SONIC_CRBA0], s->regs[SONIC_CRBA1],
s->regs[SONIC_RBWC0], s->regs[SONIC_RBWC1]);
Expand Down Expand Up @@ -411,12 +435,12 @@ static void dp8393x_do_transmit_packets(dp8393xState *s)
tx_len = 0;

/* Update registers */
s->regs[SONIC_TCR] = data[0 * width] & 0xf000;
s->regs[SONIC_TPS] = data[1 * width];
s->regs[SONIC_TFC] = data[2 * width];
s->regs[SONIC_TSA0] = data[3 * width];
s->regs[SONIC_TSA1] = data[4 * width];
s->regs[SONIC_TFS] = data[5 * width];
s->regs[SONIC_TCR] = dp8393x_get(s, width, data, 0) & 0xf000;
s->regs[SONIC_TPS] = dp8393x_get(s, width, data, 1);
s->regs[SONIC_TFC] = dp8393x_get(s, width, data, 2);
s->regs[SONIC_TSA0] = dp8393x_get(s, width, data, 3);
s->regs[SONIC_TSA1] = dp8393x_get(s, width, data, 4);
s->regs[SONIC_TFS] = dp8393x_get(s, width, data, 5);

/* Handle programmable interrupt */
if (s->regs[SONIC_TCR] & SONIC_TCR_PINT) {
Expand All @@ -442,9 +466,9 @@ static void dp8393x_do_transmit_packets(dp8393xState *s)
address_space_rw(&s->as,
dp8393x_ttda(s) + sizeof(uint16_t) * (4 + 3 * i) * width,
MEMTXATTRS_UNSPECIFIED, (uint8_t *)data, size, 0);
s->regs[SONIC_TSA0] = data[0 * width];
s->regs[SONIC_TSA1] = data[1 * width];
s->regs[SONIC_TFS] = data[2 * width];
s->regs[SONIC_TSA0] = dp8393x_get(s, width, data, 0);
s->regs[SONIC_TSA1] = dp8393x_get(s, width, data, 1);
s->regs[SONIC_TFS] = dp8393x_get(s, width, data, 2);
}
}

Expand All @@ -471,7 +495,8 @@ static void dp8393x_do_transmit_packets(dp8393xState *s)
s->regs[SONIC_TCR] |= SONIC_TCR_PTX;

/* Write status */
data[0 * width] = s->regs[SONIC_TCR] & 0x0fff; /* status */
dp8393x_put(s, width, data, 0,
s->regs[SONIC_TCR] & 0x0fff); /* status */
size = sizeof(uint16_t) * width;
address_space_rw(&s->as,
dp8393x_ttda(s),
Expand All @@ -485,8 +510,8 @@ static void dp8393x_do_transmit_packets(dp8393xState *s)
sizeof(uint16_t) *
(4 + 3 * s->regs[SONIC_TFC]) * width,
MEMTXATTRS_UNSPECIFIED, (uint8_t *)data, size, 0);
s->regs[SONIC_CTDA] = data[0 * width] & ~0x1;
if (data[0 * width] & 0x1) {
s->regs[SONIC_CTDA] = dp8393x_get(s, width, data, 0) & ~0x1;
if (dp8393x_get(s, width, data, 0) & 0x1) {
/* EOL detected */
break;
}
Expand Down Expand Up @@ -749,7 +774,7 @@ static ssize_t dp8393x_receive(NetClientState *nc, const uint8_t * buf,
address = dp8393x_crda(s) + sizeof(uint16_t) * 5 * width;
address_space_rw(&s->as, address, MEMTXATTRS_UNSPECIFIED,
(uint8_t *)data, size, 0);
if (data[0 * width] & 0x1) {
if (dp8393x_get(s, width, data, 0) & 0x1) {
/* Still EOL ; stop reception */
return -1;
} else {
Expand Down Expand Up @@ -793,11 +818,11 @@ static ssize_t dp8393x_receive(NetClientState *nc, const uint8_t * buf,

/* Write status to memory */
DPRINTF("Write status at %08x\n", dp8393x_crda(s));
data[0 * width] = s->regs[SONIC_RCR]; /* status */
data[1 * width] = rx_len; /* byte count */
data[2 * width] = s->regs[SONIC_TRBA0]; /* pkt_ptr0 */
data[3 * width] = s->regs[SONIC_TRBA1]; /* pkt_ptr1 */
data[4 * width] = s->regs[SONIC_RSC]; /* seq_no */
dp8393x_put(s, width, data, 0, s->regs[SONIC_RCR]); /* status */
dp8393x_put(s, width, data, 1, rx_len); /* byte count */
dp8393x_put(s, width, data, 2, s->regs[SONIC_TRBA0]); /* pkt_ptr0 */
dp8393x_put(s, width, data, 3, s->regs[SONIC_TRBA1]); /* pkt_ptr1 */
dp8393x_put(s, width, data, 4, s->regs[SONIC_RSC]); /* seq_no */
size = sizeof(uint16_t) * 5 * width;
address_space_rw(&s->as, dp8393x_crda(s),
MEMTXATTRS_UNSPECIFIED, (uint8_t *)data, size, 1);
Expand All @@ -806,12 +831,12 @@ static ssize_t dp8393x_receive(NetClientState *nc, const uint8_t * buf,
size = sizeof(uint16_t) * width;
address_space_rw(&s->as, dp8393x_crda(s) + sizeof(uint16_t) * 5 * width,
MEMTXATTRS_UNSPECIFIED, (uint8_t *)data, size, 0);
s->regs[SONIC_LLFA] = data[0 * width];
s->regs[SONIC_LLFA] = dp8393x_get(s, width, data, 0);
if (s->regs[SONIC_LLFA] & 0x1) {
/* EOL detected */
s->regs[SONIC_ISR] |= SONIC_ISR_RDE;
} else {
data[0 * width] = 0; /* in_use */
dp8393x_put(s, width, data, 0, 0); /* in_use */
address_space_rw(&s->as, dp8393x_crda(s) + sizeof(uint16_t) * 6 * width,
MEMTXATTRS_UNSPECIFIED, (uint8_t *)data, sizeof(uint16_t), 1);
s->regs[SONIC_CRDA] = s->regs[SONIC_LLFA];
Expand Down Expand Up @@ -924,6 +949,7 @@ static Property dp8393x_properties[] = {
DEFINE_NIC_PROPERTIES(dp8393xState, conf),
DEFINE_PROP_PTR("dma_mr", dp8393xState, dma_mr),
DEFINE_PROP_UINT8("it_shift", dp8393xState, it_shift, 0),
DEFINE_PROP_BOOL("big_endian", dp8393xState, big_endian, false),
DEFINE_PROP_END_OF_LIST(),
};

Expand Down

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