static void lpc_send_response_packet(struct host_packet *pkt)
{
/* Ignore in-progress on LPC since interface is synchronous anyway */
if (pkt->driver_result == EC_RES_IN_PROGRESS)
return;
/* Write result to the data byte. This sets the TOH status bit. */
NPCX_HIPMDO(PMC_HOST_CMD) = pkt->driver_result;
/* Clear processing flag */
CLEAR_BIT(NPCX_HIPMST(PMC_HOST_CMD), 2);
}
/**
* Handle write to ACPI I/O port
*
* @param is_cmd Is write command (is_cmd=1) or data (is_cmd=0)
*/
static void handle_acpi_write(int is_cmd)
{
uint8_t value, result;
/* Read command/data; this clears the FRMH status bit. */
value = NPCX_HIPMDI(PMC_ACPI);
/* Handle whatever this was. */
if (acpi_ap_to_ec(is_cmd, value, &result))
NPCX_HIPMDO(PMC_ACPI) = result;
/*
* ACPI 5.0-12.6.1: Generate SCI for Input Buffer Empty / Output Buffer
* Full condition on the kernel channel.
*/
lpc_generate_sci();
}
static void lpc_send_response(struct host_cmd_handler_args *args)
{
uint8_t *out;
int size = args->response_size;
int csum;
int i;
/* Ignore in-progress on LPC since interface is synchronous anyway */
if (args->result == EC_RES_IN_PROGRESS)
return;
/* Handle negative size */
if (size < 0) {
args->result = EC_RES_INVALID_RESPONSE;
size = 0;
}
/* New-style response */
lpc_host_args->flags =
(host_cmd_flags & ~EC_HOST_ARGS_FLAG_FROM_HOST) |
EC_HOST_ARGS_FLAG_TO_HOST;
lpc_host_args->data_size = size;
csum = args->command + lpc_host_args->flags +
lpc_host_args->command_version +
lpc_host_args->data_size;
for (i = 0, out = (uint8_t *)args->response; i < size; i++, out++)
csum += *out;
lpc_host_args->checksum = (uint8_t)csum;
/* Fail if response doesn't fit in the param buffer */
if (size > EC_PROTO2_MAX_PARAM_SIZE)
args->result = EC_RES_INVALID_RESPONSE;
/* Write result to the data byte. This sets the TOH status bit. */
NPCX_HIPMDO(PMC_HOST_CMD) = args->result;
/* Clear processing flag */
CLEAR_BIT(NPCX_HIPMST(PMC_HOST_CMD), 2);
}
/**
* Handle write to ACPI I/O port
*
* @param is_cmd Is write command (is_cmd=1) or data (is_cmd=0)
*/
static void handle_acpi_write(int is_cmd)
{
uint8_t value, result;
/* Set processing flag before reading command byte */
SET_BIT(NPCX_HIPMST(PMC_ACPI), NPCX_HIPMST_F0);
/* Read command/data; this clears the FRMH status bit. */
value = NPCX_HIPMDI(PMC_ACPI);
/* Handle whatever this was. */
if (acpi_ap_to_ec(is_cmd, value, &result))
NPCX_HIPMDO(PMC_ACPI) = result;
/* Clear processing flag */
CLEAR_BIT(NPCX_HIPMST(PMC_ACPI), NPCX_HIPMST_F0);
/*
* ACPI 5.0-12.6.1: Generate SCI for Input Buffer Empty / Output Buffer
* Full condition on the kernel channel.
*/
lpc_generate_sci();
}