void pm1_ibf_interrupt(void)
{
int is_cmd;
uint8_t value, result;
if (pm_get_status(LPC_ACPI_CMD) & EC_LPC_STATUS_FROM_HOST) {
/* Set the busy bit */
pm_set_status(LPC_ACPI_CMD, EC_LPC_STATUS_PROCESSING, 1);
/* data from command port or data port */
is_cmd = pm_get_status(LPC_ACPI_CMD) & EC_LPC_STATUS_LAST_CMD;
/* Get command or data */
value = pm_get_data_in(LPC_ACPI_CMD);
/* Handle whatever this was. */
if (acpi_ap_to_ec(is_cmd, value, &result))
pm_put_data_out(LPC_ACPI_CMD, result);
/* Clear the busy bit */
pm_set_status(LPC_ACPI_CMD, EC_LPC_STATUS_PROCESSING, 0);
/*
* ACPI 5.0-12.6.1: Generate SCI for Input Buffer Empty
* Output Buffer Full condition on the kernel channel.
*/
lpc_generate_sci();
}
task_clear_pending_irq(IT83XX_IRQ_PMC_IN);
}
void acpi_0_interrupt(void)
{
uint8_t value, result, is_cmd;
is_cmd = MEC1322_ACPI_EC_STATUS(0) & EC_LPC_STATUS_LAST_CMD;
/* Set the bust bi */
MEC1322_ACPI_EC_STATUS(0) |= EC_LPC_STATUS_PROCESSING;
/* Read command/data; this clears the FRMH bit. */
value = MEC1322_ACPI_EC_OS2EC(0, 0);
/* Handle whatever this was. */
if (acpi_ap_to_ec(is_cmd, value, &result))
MEC1322_ACPI_EC_EC2OS(0, 0) = result;
/* Clear the busy bit */
MEC1322_ACPI_EC_STATUS(0) &= ~EC_LPC_STATUS_PROCESSING;
/*
* ACPI 5.0-12.6.1: Generate SCI for Input Buffer Empty / Output Buffer
* Full condition on the kernel channel.
*/
lpc_generate_sci();
}
/**
* 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 update_host_event_status(void)
{
int need_sci = 0;
int need_smi = 0;
if (!init_done)
return;
/* Disable PMC1 interrupt while updating status register */
task_disable_irq(IT83XX_IRQ_PMC_IN);
if (host_events & event_mask[LPC_HOST_EVENT_SMI]) {
/* Only generate SMI for first event */
if (!(pm_get_status(LPC_ACPI_CMD) & EC_LPC_STATUS_SMI_PENDING))
need_smi = 1;
pm_set_status(LPC_ACPI_CMD, EC_LPC_STATUS_SMI_PENDING, 1);
} else {
pm_set_status(LPC_ACPI_CMD, EC_LPC_STATUS_SMI_PENDING, 0);
}
if (host_events & event_mask[LPC_HOST_EVENT_SCI]) {
/* Generate SCI for every event */
need_sci = 1;
pm_set_status(LPC_ACPI_CMD, EC_LPC_STATUS_SCI_PENDING, 1);
} else {
pm_set_status(LPC_ACPI_CMD, EC_LPC_STATUS_SCI_PENDING, 0);
}
/* Copy host events to mapped memory */
*(uint32_t *)host_get_memmap(EC_MEMMAP_HOST_EVENTS) = host_events;
task_enable_irq(IT83XX_IRQ_PMC_IN);
/* Process the wake events. */
lpc_update_wake(host_events & event_mask[LPC_HOST_EVENT_WAKE]);
/* Send pulse on SMI signal if needed */
if (need_smi)
lpc_generate_smi();
/* ACPI 5.0-12.6.1: Generate SCI for SCI_EVT=1. */
if (need_sci)
lpc_generate_sci();
}
/**
* Update the host event status.
*
* Sends a pulse if masked event status becomes non-zero:
* - SMI pulse via EC_SMI_L GPIO
* - SCI pulse via LPC0SCI
*/
static void update_host_event_status(void)
{
int need_sci = 0;
int need_smi = 0;
if (!init_done)
return;
/* Disable LPC interrupt while updating status register */
task_disable_irq(LM4_IRQ_LPC);
if (host_events & event_mask[LPC_HOST_EVENT_SMI]) {
/* Only generate SMI for first event */
if (!(LM4_LPC_ST(LPC_CH_ACPI) & LM4_LPC_ST_SMI))
need_smi = 1;
LM4_LPC_ST(LPC_CH_ACPI) |= LM4_LPC_ST_SMI;
} else
LM4_LPC_ST(LPC_CH_ACPI) &= ~LM4_LPC_ST_SMI;
if (host_events & event_mask[LPC_HOST_EVENT_SCI]) {
/* Generate SCI for every event */
need_sci = 1;
LM4_LPC_ST(LPC_CH_ACPI) |= LM4_LPC_ST_SCI;
} else
LM4_LPC_ST(LPC_CH_ACPI) &= ~LM4_LPC_ST_SCI;
/* Copy host events to mapped memory */
*(uint32_t *)host_get_memmap(EC_MEMMAP_HOST_EVENTS) = host_events;
task_enable_irq(LM4_IRQ_LPC);
/* Process the wake events. */
lpc_update_wake(host_events & event_mask[LPC_HOST_EVENT_WAKE]);
/* Send pulse on SMI signal if needed */
if (need_smi)
lpc_generate_smi();
/* ACPI 5.0-12.6.1: Generate SCI for SCI_EVT=1. */
if (need_sci)
lpc_generate_sci();
}
/**
* Update the host event status.
*
* Sends a pulse if masked event status becomes non-zero:
* - SMI pulse via EC_SMI_L GPIO
* - SCI pulse via LPC0SCI
*/
static void update_host_event_status(void)
{
int need_sci = 0;
int need_smi = 0;
if (!init_done)
return;
/* Disable LPC interrupt while updating status register */
lpc_task_disable_irq();
if (host_events & event_mask[LPC_HOST_EVENT_SMI]) {
/* Only generate SMI for first event */
if (!(NPCX_HIPMIE(PMC_ACPI) & NPCX_HIPMIE_SMIE))
need_smi = 1;
SET_BIT(NPCX_HIPMIE(PMC_ACPI), NPCX_HIPMIE_SMIE);
} else
CLEAR_BIT(NPCX_HIPMIE(PMC_ACPI), NPCX_HIPMIE_SMIE);
if (host_events & event_mask[LPC_HOST_EVENT_SCI]) {
/* Generate SCI for every event */
need_sci = 1;
SET_BIT(NPCX_HIPMIE(PMC_ACPI), NPCX_HIPMIE_SCIE);
} else
CLEAR_BIT(NPCX_HIPMIE(PMC_ACPI), NPCX_HIPMIE_SCIE);
/* Copy host events to mapped memory */
*(uint32_t *)host_get_memmap(EC_MEMMAP_HOST_EVENTS) = host_events;
lpc_task_enable_irq();
/* Process the wake events. */
lpc_update_wake(host_events & event_mask[LPC_HOST_EVENT_WAKE]);
/* Send pulse on SMI signal if needed */
if (need_smi)
lpc_generate_smi();
/* ACPI 5.0-12.6.1: Generate SCI for SCI_EVT=1. */
if (need_sci)
lpc_generate_sci();
}
/**
* 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();
}
/**
* 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 the busy bit */
LM4_LPC_ST(LPC_CH_ACPI) |= LM4_LPC_ST_BUSY;
/* Read command/data; this clears the FRMH status bit. */
value = LPC_POOL_ACPI[0];
/* Handle whatever this was. */
if (acpi_ap_to_ec(is_cmd, value, &result))
LPC_POOL_ACPI[1] = result;
/* Clear the busy bit */
LM4_LPC_ST(LPC_CH_ACPI) &= ~LM4_LPC_ST_BUSY;
/*
* ACPI 5.0-12.6.1: Generate SCI for Input Buffer Empty / Output Buffer
* Full condition on the kernel channel.
*/
lpc_generate_sci();
}
