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S2io: Fixes to enable multiple transmit fifos
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Multiple transmit fifo initialization -
  - Assigned equal scheduling priority for all configured FIFO's.
  - Modularized transmit traffic interrupt initialization since it is executed in
    s2io_card_up and s2io_link. Enable continuous tx interrupt when link is UP
    and vice verse.
  - Enable transmit interrupts for all configured transmit fifos.
  - Fixed typo errors.

Signed-off-by: Surjit Reang <surjit.reang@neterion.com>
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Ramkrishna Vepa authored and David S. Miller committed Jan 28, 2008
1 parent 2fda096 commit b7c5678
Showing 1 changed file with 104 additions and 89 deletions.
193 changes: 104 additions & 89 deletions drivers/net/s2io.c
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Original file line number Diff line number Diff line change
Expand Up @@ -84,7 +84,7 @@
#include "s2io.h"
#include "s2io-regs.h"

#define DRV_VERSION "2.0.26.15-1"
#define DRV_VERSION "2.0.26.15-2"

/* S2io Driver name & version. */
static char s2io_driver_name[] = "Neterion";
Expand Down Expand Up @@ -1078,9 +1078,68 @@ static int s2io_print_pci_mode(struct s2io_nic *nic)
return mode;
}

/**
* init_tti - Initialization transmit traffic interrupt scheme
* @nic: device private variable
* @link: link status (UP/DOWN) used to enable/disable continuous
* transmit interrupts
* Description: The function configures transmit traffic interrupts
* Return Value: SUCCESS on success and
* '-1' on failure
*/

int init_tti(struct s2io_nic *nic, int link)
{
struct XENA_dev_config __iomem *bar0 = nic->bar0;
register u64 val64 = 0;
int i;
struct config_param *config;

config = &nic->config;

for (i = 0; i < config->tx_fifo_num; i++) {
/*
* TTI Initialization. Default Tx timer gets us about
* 250 interrupts per sec. Continuous interrupts are enabled
* by default.
*/
if (nic->device_type == XFRAME_II_DEVICE) {
int count = (nic->config.bus_speed * 125)/2;
val64 = TTI_DATA1_MEM_TX_TIMER_VAL(count);
} else
val64 = TTI_DATA1_MEM_TX_TIMER_VAL(0x2078);

val64 |= TTI_DATA1_MEM_TX_URNG_A(0xA) |
TTI_DATA1_MEM_TX_URNG_B(0x10) |
TTI_DATA1_MEM_TX_URNG_C(0x30) |
TTI_DATA1_MEM_TX_TIMER_AC_EN;

if (use_continuous_tx_intrs && (link == LINK_UP))
val64 |= TTI_DATA1_MEM_TX_TIMER_CI_EN;
writeq(val64, &bar0->tti_data1_mem);

val64 = TTI_DATA2_MEM_TX_UFC_A(0x10) |
TTI_DATA2_MEM_TX_UFC_B(0x20) |
TTI_DATA2_MEM_TX_UFC_C(0x40) |
TTI_DATA2_MEM_TX_UFC_D(0x80);

writeq(val64, &bar0->tti_data2_mem);

val64 = TTI_CMD_MEM_WE | TTI_CMD_MEM_STROBE_NEW_CMD |
TTI_CMD_MEM_OFFSET(i);
writeq(val64, &bar0->tti_command_mem);

if (wait_for_cmd_complete(&bar0->tti_command_mem,
TTI_CMD_MEM_STROBE_NEW_CMD, S2IO_BIT_RESET) != SUCCESS)
return FAILURE;
}

return SUCCESS;
}

/**
* init_nic - Initialization of hardware
* @nic: device peivate variable
* @nic: device private variable
* Description: The function sequentially configures every block
* of the H/W from their reset values.
* Return Value: SUCCESS on success and
Expand Down Expand Up @@ -1185,9 +1244,9 @@ static int init_nic(struct s2io_nic *nic)

for (i = 0, j = 0; i < config->tx_fifo_num; i++) {
val64 |=
vBIT(config->tx_cfg[i].fifo_len - 1, ((i * 32) + 19),
vBIT(config->tx_cfg[i].fifo_len - 1, ((j * 32) + 19),
13) | vBIT(config->tx_cfg[i].fifo_priority,
((i * 32) + 5), 3);
((j * 32) + 5), 3);

if (i == (config->tx_fifo_num - 1)) {
if (i % 2 == 0)
Expand All @@ -1198,17 +1257,25 @@ static int init_nic(struct s2io_nic *nic)
case 1:
writeq(val64, &bar0->tx_fifo_partition_0);
val64 = 0;
j = 0;
break;
case 3:
writeq(val64, &bar0->tx_fifo_partition_1);
val64 = 0;
j = 0;
break;
case 5:
writeq(val64, &bar0->tx_fifo_partition_2);
val64 = 0;
j = 0;
break;
case 7:
writeq(val64, &bar0->tx_fifo_partition_3);
val64 = 0;
j = 0;
break;
default:
j++;
break;
}
}
Expand Down Expand Up @@ -1294,99 +1361,90 @@ static int init_nic(struct s2io_nic *nic)

/*
* Filling Tx round robin registers
* as per the number of FIFOs
* as per the number of FIFOs for equal scheduling priority
*/
switch (config->tx_fifo_num) {
case 1:
val64 = 0x0000000000000000ULL;
val64 = 0x0;
writeq(val64, &bar0->tx_w_round_robin_0);
writeq(val64, &bar0->tx_w_round_robin_1);
writeq(val64, &bar0->tx_w_round_robin_2);
writeq(val64, &bar0->tx_w_round_robin_3);
writeq(val64, &bar0->tx_w_round_robin_4);
break;
case 2:
val64 = 0x0000010000010000ULL;
val64 = 0x0001000100010001ULL;
writeq(val64, &bar0->tx_w_round_robin_0);
val64 = 0x0100000100000100ULL;
writeq(val64, &bar0->tx_w_round_robin_1);
val64 = 0x0001000001000001ULL;
writeq(val64, &bar0->tx_w_round_robin_2);
val64 = 0x0000010000010000ULL;
writeq(val64, &bar0->tx_w_round_robin_3);
val64 = 0x0100000000000000ULL;
val64 = 0x0001000100000000ULL;
writeq(val64, &bar0->tx_w_round_robin_4);
break;
case 3:
val64 = 0x0001000102000001ULL;
val64 = 0x0001020001020001ULL;
writeq(val64, &bar0->tx_w_round_robin_0);
val64 = 0x0001020000010001ULL;
val64 = 0x0200010200010200ULL;
writeq(val64, &bar0->tx_w_round_robin_1);
val64 = 0x0200000100010200ULL;
val64 = 0x0102000102000102ULL;
writeq(val64, &bar0->tx_w_round_robin_2);
val64 = 0x0001000102000001ULL;
val64 = 0x0001020001020001ULL;
writeq(val64, &bar0->tx_w_round_robin_3);
val64 = 0x0001020000000000ULL;
val64 = 0x0200010200000000ULL;
writeq(val64, &bar0->tx_w_round_robin_4);
break;
case 4:
val64 = 0x0001020300010200ULL;
val64 = 0x0001020300010203ULL;
writeq(val64, &bar0->tx_w_round_robin_0);
val64 = 0x0100000102030001ULL;
writeq(val64, &bar0->tx_w_round_robin_1);
val64 = 0x0200010000010203ULL;
writeq(val64, &bar0->tx_w_round_robin_2);
val64 = 0x0001020001000001ULL;
writeq(val64, &bar0->tx_w_round_robin_3);
val64 = 0x0203000100000000ULL;
val64 = 0x0001020300000000ULL;
writeq(val64, &bar0->tx_w_round_robin_4);
break;
case 5:
val64 = 0x0001000203000102ULL;
val64 = 0x0001020304000102ULL;
writeq(val64, &bar0->tx_w_round_robin_0);
val64 = 0x0001020001030004ULL;
val64 = 0x0304000102030400ULL;
writeq(val64, &bar0->tx_w_round_robin_1);
val64 = 0x0001000203000102ULL;
val64 = 0x0102030400010203ULL;
writeq(val64, &bar0->tx_w_round_robin_2);
val64 = 0x0001020001030004ULL;
val64 = 0x0400010203040001ULL;
writeq(val64, &bar0->tx_w_round_robin_3);
val64 = 0x0001000000000000ULL;
val64 = 0x0203040000000000ULL;
writeq(val64, &bar0->tx_w_round_robin_4);
break;
case 6:
val64 = 0x0001020304000102ULL;
val64 = 0x0001020304050001ULL;
writeq(val64, &bar0->tx_w_round_robin_0);
val64 = 0x0304050001020001ULL;
val64 = 0x0203040500010203ULL;
writeq(val64, &bar0->tx_w_round_robin_1);
val64 = 0x0203000100000102ULL;
val64 = 0x0405000102030405ULL;
writeq(val64, &bar0->tx_w_round_robin_2);
val64 = 0x0304000102030405ULL;
val64 = 0x0001020304050001ULL;
writeq(val64, &bar0->tx_w_round_robin_3);
val64 = 0x0001000200000000ULL;
val64 = 0x0203040500000000ULL;
writeq(val64, &bar0->tx_w_round_robin_4);
break;
case 7:
val64 = 0x0001020001020300ULL;
val64 = 0x0001020304050600ULL;
writeq(val64, &bar0->tx_w_round_robin_0);
val64 = 0x0102030400010203ULL;
val64 = 0x0102030405060001ULL;
writeq(val64, &bar0->tx_w_round_robin_1);
val64 = 0x0405060001020001ULL;
val64 = 0x0203040506000102ULL;
writeq(val64, &bar0->tx_w_round_robin_2);
val64 = 0x0304050000010200ULL;
val64 = 0x0304050600010203ULL;
writeq(val64, &bar0->tx_w_round_robin_3);
val64 = 0x0102030000000000ULL;
val64 = 0x0405060000000000ULL;
writeq(val64, &bar0->tx_w_round_robin_4);
break;
case 8:
val64 = 0x0001020300040105ULL;
val64 = 0x0001020304050607ULL;
writeq(val64, &bar0->tx_w_round_robin_0);
val64 = 0x0200030106000204ULL;
writeq(val64, &bar0->tx_w_round_robin_1);
val64 = 0x0103000502010007ULL;
writeq(val64, &bar0->tx_w_round_robin_2);
val64 = 0x0304010002060500ULL;
writeq(val64, &bar0->tx_w_round_robin_3);
val64 = 0x0103020400000000ULL;
val64 = 0x0001020300000000ULL;
writeq(val64, &bar0->tx_w_round_robin_4);
break;
}
Expand Down Expand Up @@ -1563,58 +1621,14 @@ static int init_nic(struct s2io_nic *nic)
MAC_RX_LINK_UTIL_VAL(rmac_util_period);
writeq(val64, &bar0->mac_link_util);


/*
* Initializing the Transmit and Receive Traffic Interrupt
* Scheme.
*/
/*
* TTI Initialization. Default Tx timer gets us about
* 250 interrupts per sec. Continuous interrupts are enabled
* by default.
*/
if (nic->device_type == XFRAME_II_DEVICE) {
int count = (nic->config.bus_speed * 125)/2;
val64 = TTI_DATA1_MEM_TX_TIMER_VAL(count);
} else {

val64 = TTI_DATA1_MEM_TX_TIMER_VAL(0x2078);
}
val64 |= TTI_DATA1_MEM_TX_URNG_A(0xA) |
TTI_DATA1_MEM_TX_URNG_B(0x10) |
TTI_DATA1_MEM_TX_URNG_C(0x30) | TTI_DATA1_MEM_TX_TIMER_AC_EN;
if (use_continuous_tx_intrs)
val64 |= TTI_DATA1_MEM_TX_TIMER_CI_EN;
writeq(val64, &bar0->tti_data1_mem);

val64 = TTI_DATA2_MEM_TX_UFC_A(0x10) |
TTI_DATA2_MEM_TX_UFC_B(0x20) |
TTI_DATA2_MEM_TX_UFC_C(0x40) | TTI_DATA2_MEM_TX_UFC_D(0x80);
writeq(val64, &bar0->tti_data2_mem);

val64 = TTI_CMD_MEM_WE | TTI_CMD_MEM_STROBE_NEW_CMD;
writeq(val64, &bar0->tti_command_mem);

/*
* Once the operation completes, the Strobe bit of the command
* register will be reset. We poll for this particular condition
* We wait for a maximum of 500ms for the operation to complete,
* if it's not complete by then we return error.
*/
time = 0;
while (TRUE) {
val64 = readq(&bar0->tti_command_mem);
if (!(val64 & TTI_CMD_MEM_STROBE_NEW_CMD)) {
break;
}
if (time > 10) {
DBG_PRINT(ERR_DBG, "%s: TTI init Failed\n",
dev->name);
return -ENODEV;
}
msleep(50);
time++;
}
/* Initialize TTI */
if (SUCCESS != init_tti(nic, nic->last_link_state))
return -ENODEV;

/* RTI Initialization */
if (nic->device_type == XFRAME_II_DEVICE) {
Expand Down Expand Up @@ -7443,6 +7457,7 @@ static void s2io_link(struct s2io_nic * sp, int link)
struct net_device *dev = (struct net_device *) sp->dev;

if (link != sp->last_link_state) {
init_tti(sp, link);
if (link == LINK_DOWN) {
DBG_PRINT(ERR_DBG, "%s: Link down\n", dev->name);
netif_carrier_off(dev);
Expand Down Expand Up @@ -7541,7 +7556,7 @@ static int s2io_verify_parm(struct pci_dev *pdev, u8 *dev_intr_type)
/**
* rts_ds_steer - Receive traffic steering based on IPv4 or IPv6 TOS
* or Traffic class respectively.
* @nic: device peivate variable
* @nic: device private variable
* Description: The function configures the receive steering to
* desired receive ring.
* Return Value: SUCCESS on success and
Expand Down

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