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hw/net/i82596: Factor configure function out

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Abstract the configure function.

Signed-off-by: Soumyajyotii Ssarkar <soumyajyotisarkar23@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250607152711.108914-2-soumyajyotisarkar23@gmail.com>
[PMD: Split patch in 2]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Soumyajyotii Ssarkar 2025-06-07 20:57:12 +05:30 • committed by Philippe Mathieu-Daudé
parent 32e02fd388
commit fb8449def4
1 changed files with 21 additions and 15 deletions
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36
hw/net/i82596.c
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@ -177,6 +177,26 @@ static void set_individual_address(I82596State *s, uint32_t addr)
trace_i82596_new_mac(nc->info_str); trace_i82596_new_mac(nc->info_str);
} }
static void i82596_configure(I82596State *s, uint32_t addr)
{
uint8_t byte_cnt;
byte_cnt = get_byte(addr + 8) & 0x0f;
byte_cnt = MAX(byte_cnt, 4);
byte_cnt = MIN(byte_cnt, sizeof(s->config));
/* copy byte_cnt max. */
address_space_read(&address_space_memory, addr + 8,
MEMTXATTRS_UNSPECIFIED, s->config, byte_cnt);
/* config byte according to page 35ff */
s->config[2] &= 0x82; /* mask valid bits */
s->config[2] |= 0x40;
s->config[7] &= 0xf7; /* clear zero bit */
assert(I596_NOCRC_INS == 0); /* do CRC insertion */
s->config[10] = MAX(s->config[10], 5); /* min frame length */
s->config[12] &= 0x40; /* only full duplex field valid */
s->config[13] |= 0x3f; /* set ones in byte 13 */
}
static void set_multicast_list(I82596State *s, uint32_t addr) static void set_multicast_list(I82596State *s, uint32_t addr)
{ {
uint16_t mc_count, i; uint16_t mc_count, i;
@ -234,7 +254,6 @@ static void command_loop(I82596State *s)
{ {
uint16_t cmd; uint16_t cmd;
uint16_t status; uint16_t status;
uint8_t byte_cnt;
DBG(printf("STARTING COMMAND LOOP cmd_p=%08x\n", s->cmd_p)); DBG(printf("STARTING COMMAND LOOP cmd_p=%08x\n", s->cmd_p));
@ -254,20 +273,7 @@ static void command_loop(I82596State *s)
set_individual_address(s, s->cmd_p); set_individual_address(s, s->cmd_p);
break; break;
case CmdConfigure: case CmdConfigure:
byte_cnt = get_byte(s->cmd_p + 8) & 0x0f; i82596_configure(s, s->cmd_p);
byte_cnt = MAX(byte_cnt, 4);
byte_cnt = MIN(byte_cnt, sizeof(s->config));
/* copy byte_cnt max. */
address_space_read(&address_space_memory, s->cmd_p + 8,
MEMTXATTRS_UNSPECIFIED, s->config, byte_cnt);
/* config byte according to page 35ff */
s->config[2] &= 0x82; /* mask valid bits */
s->config[2] |= 0x40;
s->config[7] &= 0xf7; /* clear zero bit */
assert(I596_NOCRC_INS == 0); /* do CRC insertion */
s->config[10] = MAX(s->config[10], 5); /* min frame length */
s->config[12] &= 0x40; /* only full duplex field valid */
s->config[13] |= 0x3f; /* set ones in byte 13 */
break; break;
case CmdTDR: case CmdTDR:
/* get signal LINK */ /* get signal LINK */