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pigweed / third_party / github / zephyrproject-rtos / zephyr / 57c150af0cc5350f1f83365377f6674745cbb3ab / . / drivers / espi / espi_saf_mchp_xec_v2.c
blob: aa7ea6905816de75cfaead352cf6071a8cf5f1b8 [file] [log] [blame]
/*
* Copyright (c) 2019 Intel Corporation
* Copyright (c) 2022 Microchip Technology Inc.
*
* SPDX-License-Identifier: Apache-2.0
*/
#define DT_DRV_COMPAT microchip_xec_espi_saf_v2
#include <zephyr/kernel.h>
#include <soc.h>
#include <errno.h>
#include <zephyr/drivers/clock_control/mchp_xec_clock_control.h>
#include <zephyr/drivers/espi.h>
#include <zephyr/drivers/espi_saf.h>
#include <zephyr/drivers/interrupt_controller/intc_mchp_xec_ecia.h>
#include <zephyr/dt-bindings/interrupt-controller/mchp-xec-ecia.h>
#include <zephyr/logging/log.h>
#include "espi_mchp_xec_v2.h"
#include "espi_utils.h"
LOG_MODULE_REGISTER(espi_saf, CONFIG_ESPI_LOG_LEVEL);
/* common clock control device node for all Microchip XEC chips */
#define MCHP_XEC_CLOCK_CONTROL_NODE DT_NODELABEL(pcr)
/* SAF EC Portal read/write flash access limited to 1-64 bytes */
#define MAX_SAF_ECP_BUFFER_SIZE 64ul
/* 1 second maximum for flash operations */
#define MAX_SAF_FLASH_TIMEOUT 125000ul /* 1000ul */
#define MAX_SAF_FLASH_TIMEOUT_MS 1000ul
/* 64 bytes @ 24MHz quad is approx. 6 us */
#define SAF_WAIT_INTERVAL 8
/* After 8 wait intervals yield */
#define SAF_YIELD_THRESHOLD 64
/* Get QMSPI 0 encoded GIRQ information */
#define XEC_QMSPI_ENC_GIRQ \
DT_PROP_BY_IDX(DT_INST(0, microchip_xec_qmspi_ldma), girqs, 0)
#define XEC_QMSPI_GIRQ MCHP_XEC_ECIA_GIRQ(XEC_QMSPI_ENC_GIRQ)
#define XEC_QMSPI_GIRQ_POS MCHP_XEC_ECIA_GIRQ_POS(XEC_QMSPI_ENC_GIRQ)
#define XEC_SAF_DONE_ENC_GIRQ DT_INST_PROP_BY_IDX(0, girqs, 0)
#define XEC_SAF_ERR_ENC_GIRQ DT_INST_PROP_BY_IDX(0, girqs, 1)
#define XEC_SAF_DONE_GIRQ MCHP_XEC_ECIA_GIRQ(XEC_SAF_DONE_ENC_GIRQ)
#define XEC_SAF_DONE_GIRQ_POS MCHP_XEC_ECIA_GIRQ_POS(XEC_SAF_ERR_ENC_GIRQ)
/*
* SAF configuration from Device Tree
* SAF controller register block base address
* QMSPI controller register block base address
* SAF communications register block base address
* Flash STATUS1 poll timeout in 32KHz periods
* Flash consecutive read timeout in units of 20 ns
* Delay before first Poll-1 command after suspend in 20 ns units
* Hold off suspend for this interval if erase or program in 32KHz periods.
* Add delay between Poll STATUS1 commands in 20 ns units.
*/
struct espi_saf_xec_config {
struct mchp_espi_saf * const saf_base;
struct qmspi_regs * const qmspi_base;
struct mchp_espi_saf_comm * const saf_comm_base;
struct espi_iom_regs * const iom_base;
void (*irq_config_func)(void);
uint32_t poll_timeout;
uint32_t consec_rd_timeout;
uint32_t sus_chk_delay;
uint16_t sus_rsm_interval;
uint16_t poll_interval;
uint8_t pcr_idx;
uint8_t pcr_pos;
uint8_t irq_info_size;
uint8_t rsvd1;
const struct espi_xec_irq_info *irq_info_list;
};
struct espi_saf_xec_data {
struct k_sem ecp_lock;
uint32_t hwstatus;
sys_slist_t callbacks;
};
/* EC portal local flash r/w buffer */
static uint32_t slave_mem[MAX_SAF_ECP_BUFFER_SIZE];
/*
* @brief eSPI SAF configuration
*/
static inline void mchp_saf_cs_descr_wr(struct mchp_espi_saf *regs, uint8_t cs,
uint32_t val)
{
regs->SAF_CS_OP[cs].OP_DESCR = val;
}
static inline void mchp_saf_poll2_mask_wr(struct mchp_espi_saf *regs, uint8_t cs,
uint16_t val)
{
LOG_DBG("%s cs: %d mask %x", __func__, cs, val);
if (cs == 0) {
regs->SAF_CS0_CFG_P2M = val;
} else {
regs->SAF_CS1_CFG_P2M = val;
}
}
static inline void mchp_saf_cm_prefix_wr(struct mchp_espi_saf *regs, uint8_t cs,
uint16_t val)
{
if (cs == 0) {
regs->SAF_CS0_CM_PRF = val;
} else {
regs->SAF_CS1_CM_PRF = val;
}
}
/*
* Initialize SAF flash protection regions.
* SAF HW implements 17 protection regions.
* At least one protection region must be configured to allow
* EC access to the local flash through the EC Portal.
* Each protection region is composed of 4 32-bit registers
* Start bits[19:0] = bits[31:12] region start address (4KB boundaries)
* Limit bits[19:0] = bits[31:12] region limit address (4KB boundaries)
* Write protect b[7:0] = masters[7:0] allow write/erase. 1=allowed
* Read protetc b[7:0] = masters[7:0] allow read. 1=allowed
*
* This routine configures protection region 0 for full flash array
* address range and read-write-erase for all masters.
* This routine must be called AFTER the flash configuration size/limit and
* threshold registers have been programmed.
*
* POR default values:
* Start = 0x7ffff
* Limit = 0
* Write Prot = 0x01 Master 0 always granted write/erase
* Read Prot = 0x01 Master 0 always granted read
*
* Sample code configures PR[0]
* Start = 0
* Limit = 0x7ffff
* WR = 0xFF
* RD = 0xFF
*/
static void saf_protection_regions_init(struct mchp_espi_saf *regs)
{
LOG_DBG("%s", __func__);
for (size_t n = 0; n < MCHP_ESPI_SAF_PR_MAX; n++) {
if (n == 0) {
regs->SAF_PROT_RG[0].START = 0U;
regs->SAF_PROT_RG[0].LIMIT =
regs->SAF_FL_CFG_SIZE_LIM >> 12;
regs->SAF_PROT_RG[0].WEBM = MCHP_SAF_MSTR_ALL;
regs->SAF_PROT_RG[0].RDBM = MCHP_SAF_MSTR_ALL;
} else {
regs->SAF_PROT_RG[n].START =
MCHP_SAF_PROT_RG_START_DFLT;
regs->SAF_PROT_RG[n].LIMIT =
MCHP_SAF_PROT_RG_LIMIT_DFLT;
regs->SAF_PROT_RG[n].WEBM = 0U;
regs->SAF_PROT_RG[n].RDBM = 0U;
}
LOG_DBG("PROT[%d] START %x", n, regs->SAF_PROT_RG[n].START);
LOG_DBG("PROT[%d] LIMIT %x", n, regs->SAF_PROT_RG[n].LIMIT);
LOG_DBG("PROT[%d] WEBM %x", n, regs->SAF_PROT_RG[n].WEBM);
LOG_DBG("PROT[%d] RDBM %x", n, regs->SAF_PROT_RG[n].RDBM);
}
}
static int qmspi_freq_div(uint32_t freqhz, uint32_t *fdiv)
{
clock_control_subsys_t clkss =
(clock_control_subsys_t)(MCHP_XEC_PCR_CLK_PERIPH_FAST);
uint32_t clk = 0u;
if (!fdiv) {
return -EINVAL;
}
if (clock_control_get_rate(DEVICE_DT_GET(MCHP_XEC_CLOCK_CONTROL_NODE),
(clock_control_subsys_t)clkss, &clk)) {
return -EIO;
}
*fdiv = 0u; /* maximum divider = 0x10000 */
if (freqhz) {
*fdiv = clk / freqhz;
}
return 0u;
}
static int qmspi_freq_div_from_mhz(uint32_t freqmhz, uint32_t *fdiv)
{
uint32_t freqhz = freqmhz * 1000000u;
return qmspi_freq_div(freqhz, fdiv);
}
/*
* Take over and re-initialize QMSPI for use by SAF HW engine.
* When SAF is activated, QMSPI registers are controlled by SAF
* HW engine. CPU no longer has access to QMSPI registers.
* 1. Save QMSPI driver frequency divider, SPI signalling mode, and
* chip select timing.
* 2. Put QMSPI controller in a known state by performing a soft reset.
* 3. Clear QMSPI GIRQ status
* 4. Configure QMSPI interface control for SAF.
* 5. Load flash device independent (generic) descriptors.
* 6. Enable transfer done interrupt in QMSPI
* 7. Enable QMSPI SAF mode
* 8. If user configuration overrides frequency, signalling mode,
* or chip select timing derive user values.
* 9. Program QMSPI MODE and CSTIM registers with activate set.
*/
static int saf_qmspi_init(const struct espi_saf_xec_config *xcfg,
const struct espi_saf_cfg *cfg)
{
uint32_t qmode, qfdiv, cstim, n;
struct qmspi_regs * const qregs = xcfg->qmspi_base;
struct mchp_espi_saf * const regs = xcfg->saf_base;
const struct espi_saf_hw_cfg *hwcfg = &cfg->hwcfg;
qmode = qregs->MODE;
if (!(qmode & MCHP_QMSPI_M_ACTIVATE)) {
return -EAGAIN;
}
qmode = qregs->MODE & (MCHP_QMSPI_M_FDIV_MASK | MCHP_QMSPI_M_SIG_MASK);
cstim = qregs->CSTM;
qregs->MODE = MCHP_QMSPI_M_SRST;
qregs->STS = MCHP_QMSPI_STS_RW1C_MASK;
mchp_soc_ecia_girq_src_dis(XEC_QMSPI_GIRQ, XEC_QMSPI_GIRQ_POS);
mchp_soc_ecia_girq_src_clr(XEC_QMSPI_GIRQ, XEC_QMSPI_GIRQ_POS);
qregs->IFCTRL =
(MCHP_QMSPI_IFC_WP_OUT_HI | MCHP_QMSPI_IFC_WP_OUT_EN |
MCHP_QMSPI_IFC_HOLD_OUT_HI | MCHP_QMSPI_IFC_HOLD_OUT_EN);
for (n = 0; n < MCHP_SAF_NUM_GENERIC_DESCR; n++) {
qregs->DESCR[MCHP_SAF_CM_EXIT_START_DESCR + n] =
hwcfg->generic_descr[n];
}
/* SAF HW uses QMSPI interrupt signal */
qregs->IEN = MCHP_QMSPI_IEN_XFR_DONE;
qmode |= (MCHP_QMSPI_M_SAF_DMA_MODE_EN | MCHP_QMSPI_M_CS0 |
MCHP_QMSPI_M_ACTIVATE);
if (hwcfg->flags & MCHP_SAF_HW_CFG_FLAG_CPHA) {
qmode = (qmode & ~(MCHP_QMSPI_M_SIG_MASK)) |
((hwcfg->qmspi_cpha << MCHP_QMSPI_M_SIG_POS) &
MCHP_QMSPI_M_SIG_MASK);
}
/* Copy QMSPI frequency divider into SAF CS0 and CS1 QMSPI frequency
* dividers. SAF HW uses CS0/CS1 divider register fields to overwrite
* QMSPI frequency divider in QMSPI.Mode register. Later we will update
* SAF CS0/CS1 SPI frequency dividers based on flash configuration.
*/
qfdiv = (qmode & MCHP_QMSPI_M_FDIV_MASK) >> MCHP_QMSPI_M_FDIV_POS;
qfdiv = qfdiv | (qfdiv << 16); /* read and rest clock dividers */
regs->SAF_CLKDIV_CS0 = qfdiv;
regs->SAF_CLKDIV_CS1 = qfdiv;
if (hwcfg->flags & MCHP_SAF_HW_CFG_FLAG_CSTM) {
cstim = hwcfg->qmspi_cs_timing;
}
/* MEC172x SAF uses TX LDMA channel 0 in non-descriptor mode.
* SAF HW writes QMSPI.Control and TX LDMA channel 0 registers
* to transmit opcode, address, and data. We configure must
* configure TX LDMA channel 0 control register. We believe SAF
* HW will set bit[6] to 1.
*/
qregs->LDTX[0].CTRL = MCHP_QMSPI_LDC_EN | MCHP_QMSPI_LDC_RS_EN | MCHP_QMSPI_LDC_ASZ_4;
qmode |= MCHP_QMSPI_M_LDMA_RX_EN | MCHP_QMSPI_M_LDMA_TX_EN;
qregs->MODE = qmode;
qregs->CSTM = cstim;
return 0;
}
/*
* Registers at offsets:
* SAF Poll timeout @ 0x194. Hard coded to 0x28000. Default value = 0.
* recommended value = 0x28000 32KHz clocks (5 seconds). b[17:0]
* SAF Poll interval @ 0x198. Hard coded to 0
* Default value = 0. Recommended = 0. b[15:0]
* SAF Suspend/Resume Interval @ 0x19c. Hard coded to 0x8
* Default value = 0x01. Min time erase/prog in 32KHz units.
* SAF Consecutive Read Timeout @ 0x1a0. Hard coded to 0x2. b[15:0]
* Units of MCLK. Recommend < 20us. b[19:0]
* SAF Suspend Check Delay @ 0x1ac. Not touched.
* Default = 0. Recommend = 20us. Units = MCLK. b[19:0]
*/
static void saf_flash_timing_init(struct mchp_espi_saf * const regs,
const struct espi_saf_xec_config *cfg)
{
LOG_DBG("%s\n", __func__);
regs->SAF_POLL_TMOUT = cfg->poll_timeout;
regs->SAF_POLL_INTRVL = cfg->poll_interval;
regs->SAF_SUS_RSM_INTRVL = cfg->sus_rsm_interval;
regs->SAF_CONSEC_RD_TMOUT = cfg->consec_rd_timeout;
regs->SAF_SUS_CHK_DLY = cfg->sus_chk_delay;
LOG_DBG("SAF_POLL_TMOUT %x\n", regs->SAF_POLL_TMOUT);
LOG_DBG("SAF_POLL_INTRVL %x\n", regs->SAF_POLL_INTRVL);
LOG_DBG("SAF_SUS_RSM_INTRVL %x\n", regs->SAF_SUS_RSM_INTRVL);
LOG_DBG("SAF_CONSEC_RD_TMOUT %x\n", regs->SAF_CONSEC_RD_TMOUT);
LOG_DBG("SAF_SUS_CHK_DLY %x\n", regs->SAF_SUS_CHK_DLY);
}
/*
* Disable DnX bypass feature.
*/
static void saf_dnx_bypass_init(struct mchp_espi_saf * const regs)
{
regs->SAF_DNX_PROT_BYP = 0;
regs->SAF_DNX_PROT_BYP = 0xffffffff;
}
/*
* Bitmap of flash erase size from 1KB up to 128KB.
* eSPI SAF specification requires 4KB erase support.
* MCHP SAF supports 4KB, 32KB, and 64KB.
* Only report 32KB and 64KB to Host if supported by both
* flash devices.
*/
static int saf_init_erase_block_size(const struct device *dev, const struct espi_saf_cfg *cfg)
{
const struct espi_saf_xec_config * const xcfg = dev->config;
struct espi_iom_regs * const espi_iom = xcfg->iom_base;
struct espi_saf_flash_cfg *fcfg = cfg->flash_cfgs;
uint32_t opb = fcfg->opb;
uint8_t erase_bitmap = MCHP_ESPI_SERASE_SZ_4K;
LOG_DBG("%s\n", __func__);
if (cfg->nflash_devices > 1) {
fcfg++;
opb &= fcfg->opb;
}
if ((opb & MCHP_SAF_CS_OPB_ER0_MASK) == 0) {
/* One or both do not support 4KB erase! */
return -EINVAL;
}
if (opb & MCHP_SAF_CS_OPB_ER1_MASK) {
erase_bitmap |= MCHP_ESPI_SERASE_SZ_32K;
}
if (opb & MCHP_SAF_CS_OPB_ER2_MASK) {
erase_bitmap |= MCHP_ESPI_SERASE_SZ_64K;
}
espi_iom->SAFEBS = erase_bitmap;
return 0;
}
/*
* Set the continuous mode prefix and 4-byte address mode bits
* based upon the flash configuration information.
* Updates:
* SAF Flash Config Poll2 Mask @ 0x1A4
* SAF Flash Config Special Mode @ 0x1B0
* SAF Flash Misc Config @ 0x38
*/
static void saf_flash_misc_cfg(struct mchp_espi_saf * const regs, uint8_t cs,
const struct espi_saf_flash_cfg *fcfg)
{
uint32_t d, v;
d = regs->SAF_FL_CFG_MISC;
v = MCHP_SAF_FL_CFG_MISC_CS0_CPE;
if (cs) {
v = MCHP_SAF_FL_CFG_MISC_CS1_CPE;
}
/* Does this flash device require a prefix for continuous mode? */
if (fcfg->cont_prefix != 0) {
d |= v;
} else {
d &= ~v;
}
v = MCHP_SAF_FL_CFG_MISC_CS0_4BM;
if (cs) {
v = MCHP_SAF_FL_CFG_MISC_CS1_4BM;
}
/* Use 32-bit addressing for this flash device? */
if (fcfg->flags & MCHP_FLASH_FLAG_ADDR32) {
d |= v;
} else {
d &= ~v;
}
regs->SAF_FL_CFG_MISC = d;
LOG_DBG("%s SAF_FL_CFG_MISC: %x", __func__, d);
}
static void saf_flash_pd_cfg(struct mchp_espi_saf * const regs, uint8_t cs,
const struct espi_saf_flash_cfg *fcfg)
{
uint32_t pdval = 0u;
uint32_t msk = 0u;
if (cs == 0) {
msk = BIT(SAF_PWRDN_CTRL_CS0_PD_EN_POS) | BIT(SAF_PWRDN_CTRL_CS0_PD_EN_POS);
if (fcfg->flags & MCHP_FLASH_FLAG_V2_PD_CS0_EN) {
pdval |= BIT(SAF_PWRDN_CTRL_CS0_PD_EN_POS);
}
if (fcfg->flags & MCHP_FLASH_FLAG_V2_PD_CS0_EC_WK_EN) {
pdval |= BIT(SAF_PWRDN_CTRL_CS0_WPA_EN_POS);
}
} else {
msk = BIT(SAF_PWRDN_CTRL_CS1_PD_EN_POS) | BIT(SAF_PWRDN_CTRL_CS1_PD_EN_POS);
if (fcfg->flags & MCHP_FLASH_FLAG_V2_PD_CS1_EN) {
pdval |= BIT(SAF_PWRDN_CTRL_CS1_PD_EN_POS);
}
if (fcfg->flags & MCHP_FLASH_FLAG_V2_PD_CS1_EC_WK_EN) {
pdval |= BIT(SAF_PWRDN_CTRL_CS1_PD_EN_POS);
}
}
regs->SAF_PWRDN_CTRL = (regs->SAF_PWRDN_CTRL & ~msk) | pdval;
}
/* Configure SAF per chip select QMSPI clock dividers.
* SAF HW implements two QMSP clock divider registers per chip select:
* Each divider register is composed of two 16-bit fields:
* b[15:0] = QMSPI clock divider for SPI read
* b[31:16] = QMSPI clock divider for all other SPI commands
*/
static int saf_flash_freq_cfg(struct mchp_espi_saf * const regs, uint8_t cs,
const struct espi_saf_flash_cfg *fcfg)
{
uint32_t fmhz, fdiv, saf_qclk;
if (cs == 0) {
saf_qclk = regs->SAF_CLKDIV_CS0;
} else {
saf_qclk = regs->SAF_CLKDIV_CS1;
}
fmhz = fcfg->rd_freq_mhz;
if (fmhz) {
fdiv = 0u;
if (qmspi_freq_div_from_mhz(fmhz, &fdiv)) {
LOG_ERR("%s SAF CLKDIV CS0 bad freq MHz %u",
__func__, fmhz);
return -EIO;
}
if (fdiv) {
saf_qclk = (saf_qclk & ~SAF_CLKDIV_CS_MSK0) |
(fdiv & SAF_CLKDIV_CS_MSK0);
}
}
fmhz = fcfg->freq_mhz;
if (fmhz) {
fdiv = 0u;
if (qmspi_freq_div_from_mhz(fmhz, &fdiv)) {
LOG_ERR("%s SAF CLKDIV CS1 bad freq MHz %u",
__func__, fmhz);
return -EIO;
}
if (fdiv) {
saf_qclk &= ~(SAF_CLKDIV_CS_MSK0 << 16);
saf_qclk |= (fdiv & SAF_CLKDIV_CS_MSK0) << 16;
}
}
if (cs == 0) {
regs->SAF_CLKDIV_CS0 = saf_qclk;
} else {
regs->SAF_CLKDIV_CS1 = saf_qclk;
}
return 0;
}
/*
* Program flash device specific SAF and QMSPI registers.
*
* CS0 OpA @ 0x4c or CS1 OpA @ 0x5C
* CS0 OpB @ 0x50 or CS1 OpB @ 0x60
* CS0 OpC @ 0x54 or CS1 OpC @ 0x64
* Poll 2 Mask @ 0x1a4
* Continuous Prefix @ 0x1b0
* CS0: QMSPI descriptors 0-5 or CS1 QMSPI descriptors 6-11
* CS0 Descrs @ 0x58 or CS1 Descrs @ 0x68
* SAF CS0 QMSPI frequency dividers (read/all other) commands
* SAF CS1 QMSPI frequency dividers (read/all other) commands
*/
static int saf_flash_cfg(const struct device *dev,
const struct espi_saf_flash_cfg *fcfg, uint8_t cs)
{
uint32_t d, did;
const struct espi_saf_xec_config * const xcfg = dev->config;
struct mchp_espi_saf * const regs = xcfg->saf_base;
struct qmspi_regs * const qregs = xcfg->qmspi_base;
LOG_DBG("%s cs=%u", __func__, cs);
regs->SAF_CS_OP[cs].OPA = fcfg->opa;
regs->SAF_CS_OP[cs].OPB = fcfg->opb;
regs->SAF_CS_OP[cs].OPC = fcfg->opc;
regs->SAF_CS_OP[cs].OP_DESCR = (uint32_t)fcfg->cs_cfg_descr_ids;
did = MCHP_SAF_QMSPI_CS0_START_DESCR;
if (cs != 0) {
did = MCHP_SAF_QMSPI_CS1_START_DESCR;
}
for (size_t i = 0; i < MCHP_SAF_QMSPI_NUM_FLASH_DESCR; i++) {
d = fcfg->descr[i] & ~(MCHP_QMSPI_C_NEXT_DESCR_MASK);
d |= (((did + 1) << MCHP_QMSPI_C_NEXT_DESCR_POS) &
MCHP_QMSPI_C_NEXT_DESCR_MASK);
qregs->DESCR[did++] = d;
}
mchp_saf_poll2_mask_wr(regs, cs, fcfg->poll2_mask);
mchp_saf_cm_prefix_wr(regs, cs, fcfg->cont_prefix);
saf_flash_misc_cfg(regs, cs, fcfg);
saf_flash_pd_cfg(regs, cs, fcfg);
return saf_flash_freq_cfg(regs, cs, fcfg);
}
static const uint32_t tag_map_dflt[MCHP_ESPI_SAF_TAGMAP_MAX] = {
MCHP_SAF_TAG_MAP0_DFLT, MCHP_SAF_TAG_MAP1_DFLT, MCHP_SAF_TAG_MAP2_DFLT
};
static void saf_tagmap_init(struct mchp_espi_saf * const regs,
const struct espi_saf_cfg *cfg)
{
const struct espi_saf_hw_cfg *hwcfg = &cfg->hwcfg;
for (int i = 0; i < MCHP_ESPI_SAF_TAGMAP_MAX; i++) {
if (hwcfg->tag_map[i] & MCHP_SAF_HW_CFG_TAGMAP_USE) {
regs->SAF_TAG_MAP[i] = hwcfg->tag_map[i];
} else {
regs->SAF_TAG_MAP[i] = tag_map_dflt[i];
}
}
LOG_DBG("SAF TAG0 %x", regs->SAF_TAG_MAP[0]);
LOG_DBG("SAF TAG1 %x", regs->SAF_TAG_MAP[1]);
LOG_DBG("SAF TAG2 %x", regs->SAF_TAG_MAP[2]);
}
#define SAF_QSPI_LDMA_CTRL \
(MCHP_QMSPI_LDC_EN | MCHP_QMSPI_LDC_RS_EN | \
MCHP_QMSPI_LDC_ASZ_4)
static void saf_qmspi_ldma_cfg(const struct espi_saf_xec_config * const xcfg)
{
struct qmspi_regs * const qregs = xcfg->qmspi_base;
uint32_t qmode = qregs->MODE;
uint32_t n, temp, chan;
qregs->MODE = qmode & ~(MCHP_QMSPI_M_ACTIVATE);
for (n = 0u; n < MCHP_QMSPI_MAX_DESCR; n++) {
temp = qregs->DESCR[n];
if (temp & MCHP_QMSPI_C_TX_MASK) {
chan = (temp & MCHP_QMSPI_C_TX_DMA_MASK) >> MCHP_QMSPI_C_TX_DMA_POS;
if (chan) { /* zero is disabled */
chan--; /* register array index starts at 0 */
qregs->LDMA_TX_DESCR_BM |= BIT(n);
qregs->LDTX[chan].CTRL = SAF_QSPI_LDMA_CTRL;
}
}
if (temp & MCHP_QMSPI_C_RX_EN) {
chan = (temp & MCHP_QMSPI_C_RX_DMA_MASK) >> MCHP_QMSPI_C_RX_DMA_POS;
if (chan) {
chan--;
qregs->LDMA_RX_DESCR_BM |= BIT(n);
qregs->LDRX[chan].CTRL = SAF_QSPI_LDMA_CTRL;
}
}
}
qregs->MODE = qmode;
}
/*
* Configure SAF and QMSPI for SAF operation based upon the
* number and characteristics of local SPI flash devices.
* NOTE: SAF is configured but not activated. SAF should be
* activated only when eSPI master sends Flash Channel enable
* message with MAF/SAF select flag.
*/
static int espi_saf_xec_configuration(const struct device *dev,
const struct espi_saf_cfg *cfg)
{
int ret = 0;
uint32_t totalsz = 0;
uint32_t u = 0;
LOG_DBG("%s", __func__);
if ((dev == NULL) || (cfg == NULL)) {
return -EINVAL;
}
const struct espi_saf_xec_config * const xcfg = dev->config;
struct mchp_espi_saf * const regs = xcfg->saf_base;
struct mchp_espi_saf_comm * const comm_regs = xcfg->saf_comm_base;
const struct espi_saf_hw_cfg *hwcfg = &cfg->hwcfg;
const struct espi_saf_flash_cfg *fcfg = cfg->flash_cfgs;
if ((fcfg == NULL) || (cfg->nflash_devices == 0U) ||
(cfg->nflash_devices > MCHP_SAF_MAX_FLASH_DEVICES)) {
return -EINVAL;
}
if (regs->SAF_FL_CFG_MISC & MCHP_SAF_FL_CFG_MISC_SAF_EN) {
return -EAGAIN;
}
saf_qmspi_init(xcfg, cfg);
regs->SAF_CS0_CFG_P2M = 0;
regs->SAF_CS1_CFG_P2M = 0;
regs->SAF_FL_CFG_GEN_DESCR = MCHP_SAF_FL_CFG_GEN_DESCR_STD;
/* global flash power down activity counter and interval time */
regs->SAF_AC_RELOAD = hwcfg->flash_pd_timeout;
regs->SAF_FL_PWR_TMOUT = hwcfg->flash_pd_min_interval;
/* flash device connected to CS0 required */
totalsz = fcfg->flashsz;
regs->SAF_FL_CFG_THRH = totalsz;
ret = saf_flash_cfg(dev, fcfg, 0);
if (ret) {
return ret;
}
/* optional second flash device connected to CS1 */
if (cfg->nflash_devices > 1) {
fcfg++;
totalsz += fcfg->flashsz;
}
/* Program CS1 configuration (same as CS0 if only one device) */
ret = saf_flash_cfg(dev, fcfg, 1);
if (ret) {
return ret;
}
if (totalsz == 0) {
return -EAGAIN;
}
regs->SAF_FL_CFG_SIZE_LIM = totalsz - 1;
LOG_DBG("SAF_FL_CFG_THRH = %x SAF_FL_CFG_SIZE_LIM = %x",
regs->SAF_FL_CFG_THRH, regs->SAF_FL_CFG_SIZE_LIM);
saf_tagmap_init(regs, cfg);
saf_protection_regions_init(regs);
saf_dnx_bypass_init(regs);
saf_flash_timing_init(regs, xcfg);
ret = saf_init_erase_block_size(dev, cfg);
if (ret != 0) {
LOG_ERR("SAF Config bad flash erase config");
return ret;
}
/* Default or expedited prefetch? */
u = MCHP_SAF_FL_CFG_MISC_PFOE_DFLT;
if (cfg->hwcfg.flags & MCHP_SAF_HW_CFG_FLAG_PFEXP) {
u = MCHP_SAF_FL_CFG_MISC_PFOE_EXP;
}
regs->SAF_FL_CFG_MISC =
(regs->SAF_FL_CFG_MISC & ~(MCHP_SAF_FL_CFG_MISC_PFOE_MASK)) | u;
/* enable prefetch ? */
if (cfg->hwcfg.flags & MCHP_SAF_HW_CFG_FLAG_PFEN) {
comm_regs->SAF_COMM_MODE |= MCHP_SAF_COMM_MODE_PF_EN;
} else {
comm_regs->SAF_COMM_MODE &= ~(MCHP_SAF_COMM_MODE_PF_EN);
}
LOG_DBG("%s SAF_FL_CFG_MISC: %x", __func__, regs->SAF_FL_CFG_MISC);
LOG_DBG("%s Aft MCHP_SAF_COMM_MODE_REG: %x", __func__,
comm_regs->SAF_COMM_MODE);
saf_qmspi_ldma_cfg(xcfg);
return 0;
}
static int espi_saf_xec_set_pr(const struct device *dev,
const struct espi_saf_protection *pr)
{
if ((dev == NULL) || (pr == NULL)) {
return -EINVAL;
}
if (pr->nregions >= MCHP_ESPI_SAF_PR_MAX) {
return -EINVAL;
}
const struct espi_saf_xec_config * const xcfg = dev->config;
struct mchp_espi_saf * const regs = xcfg->saf_base;
if (regs->SAF_FL_CFG_MISC & MCHP_SAF_FL_CFG_MISC_SAF_EN) {
return -EAGAIN;
}
const struct espi_saf_pr *preg = pr->pregions;
size_t n = pr->nregions;
while (n--) {
uint8_t regnum = preg->pr_num;
if (regnum >= MCHP_ESPI_SAF_PR_MAX) {
return -EINVAL;
}
/* NOTE: If previously locked writes have no effect */
if (preg->flags & MCHP_SAF_PR_FLAG_ENABLE) {
regs->SAF_PROT_RG[regnum].START = preg->start >> 12U;
regs->SAF_PROT_RG[regnum].LIMIT =
(preg->start + preg->size - 1U) >> 12U;
regs->SAF_PROT_RG[regnum].WEBM = preg->master_bm_we;
regs->SAF_PROT_RG[regnum].RDBM = preg->master_bm_rd;
} else {
regs->SAF_PROT_RG[regnum].START = 0x7FFFFU;
regs->SAF_PROT_RG[regnum].LIMIT = 0U;
regs->SAF_PROT_RG[regnum].WEBM = 0U;
regs->SAF_PROT_RG[regnum].RDBM = 0U;
}
if (preg->flags & MCHP_SAF_PR_FLAG_LOCK) {
regs->SAF_PROT_LOCK |= (1UL << regnum);
}
preg++;
}
return 0;
}
static bool espi_saf_xec_channel_ready(const struct device *dev)
{
const struct espi_saf_xec_config * const xcfg = dev->config;
struct mchp_espi_saf * const regs = xcfg->saf_base;
if (regs->SAF_FL_CFG_MISC & MCHP_SAF_FL_CFG_MISC_SAF_EN) {
return true;
}
return false;
}
/*
* MCHP SAF hardware supports a range of flash block erase
* sizes from 1KB to 128KB. The eSPI Host specification requires
* 4KB must be supported. The MCHP SAF QMSPI HW interface only
* supported three erase sizes. Most SPI flash devices chosen for
* SAF support 4KB, 32KB, and 64KB.
* Get flash erase sizes driver has configured from eSPI capabilities
* registers. We assume driver flash tables have opcodes to match
* capabilities configuration.
* Check requested erase size is supported.
*/
struct erase_size_encoding {
uint8_t hwbitpos;
uint8_t encoding;
};
static const struct erase_size_encoding ersz_enc[] = {
{ MCHP_ESPI_SERASE_SZ_4K_BITPOS, 0 },
{ MCHP_ESPI_SERASE_SZ_32K_BITPOS, 1 },
{ MCHP_ESPI_SERASE_SZ_64K_BITPOS, 2 }
};
#define SAF_ERASE_ENCODING_MAX_ENTRY \
(sizeof(ersz_enc) / sizeof(struct erase_size_encoding))
static uint32_t get_erase_size_encoding(const struct device *dev, uint32_t erase_size)
{
const struct espi_saf_xec_config * const xcfg = dev->config;
struct espi_iom_regs * const espi_iom = xcfg->iom_base;
uint8_t supsz = espi_iom->SAFEBS;
LOG_DBG("%s\n", __func__);
for (int i = 0; i < SAF_ERASE_ENCODING_MAX_ENTRY; i++) {
uint32_t sz = MCHP_ESPI_SERASE_SZ(ersz_enc[i].hwbitpos);
if ((sz == erase_size) &&
(supsz & (1 << ersz_enc[i].hwbitpos))) {
return ersz_enc[i].encoding;
}
}
return 0xffffffffU;
}
static int check_ecp_access_size(uint32_t reqlen)
{
if ((reqlen < MCHP_SAF_ECP_CMD_RW_LEN_MIN) ||
(reqlen > MCHP_SAF_ECP_CMD_RW_LEN_MAX)) {
return -EAGAIN;
}
return 0;
}
/*
* EC access to SAF atttached flash array
* Allowed commands:
* MCHP_SAF_ECP_CMD_READ(0x0), MCHP_SAF_ECP_CMD_WRITE(0x01),
* MCHP_SAF_ECP_CMD_ERASE(0x02), MCHP_SAF_ECP_CMD_RPMC_OP1_CS0(0x03),
* MCHP_SAF_ECP_CMD_RPMC_OP2_CS0(0x04), MCHP_SAF_ECP_CMD_RPMC_OP1_CS1(0x83),
* MCHP_SAF_ECP_CMD_RPMC_OP2_CS1(0x84)
*/
static int saf_ecp_access(const struct device *dev,
struct espi_saf_packet *pckt, uint8_t cmd)
{
uint32_t scmd, err_mask, n;
int rc, counter;
struct espi_saf_xec_data *xdat = dev->data;
const struct espi_saf_xec_config * const xcfg = dev->config;
struct mchp_espi_saf * const regs = xcfg->saf_base;
const struct espi_xec_irq_info *safirq = &xcfg->irq_info_list[0];
counter = 0;
err_mask = MCHP_SAF_ECP_STS_ERR_MASK;
LOG_DBG("%s", __func__);
if (!(regs->SAF_FL_CFG_MISC & MCHP_SAF_FL_CFG_MISC_SAF_EN)) {
LOG_ERR("SAF is disabled");
return -EIO;
}
n = regs->SAF_ECP_BUSY;
if (n & (MCHP_SAF_ECP_EC0_BUSY | MCHP_SAF_ECP_EC1_BUSY)) {
LOG_ERR("SAF EC Portal is busy: 0x%08x", n);
return -EBUSY;
}
switch (cmd) {
case MCHP_SAF_ECP_CMD_READ:
case MCHP_SAF_ECP_CMD_WRITE:
rc = check_ecp_access_size(pckt->len);
if (rc) {
LOG_ERR("SAF EC Portal size out of bounds");
return rc;
}
if (cmd == MCHP_SAF_ECP_CMD_WRITE) {
memcpy(slave_mem, pckt->buf, pckt->len);
}
n = pckt->len;
break;
case MCHP_SAF_ECP_CMD_ERASE:
n = get_erase_size_encoding(dev, pckt->len);
if (n == UINT32_MAX) {
LOG_ERR("SAF EC Portal unsupported erase size");
return -EAGAIN;
}
break;
case MCHP_SAF_ECP_CMD_RPMC_OP1_CS0:
case MCHP_SAF_ECP_CMD_RPMC_OP2_CS0:
rc = check_ecp_access_size(pckt->len);
if (rc) {
LOG_ERR("SAF EC Portal RPMC size out of bounds");
return rc;
}
if (!(regs->SAF_CFG_CS0_OPD & SAF_CFG_CS_OPC_RPMC_OP2_MSK)) {
LOG_ERR("SAF CS0 RPMC opcode not configured");
return -EIO;
}
n = pckt->len;
break;
case MCHP_SAF_ECP_CMD_RPMC_OP1_CS1:
case MCHP_SAF_ECP_CMD_RPMC_OP2_CS1:
rc = check_ecp_access_size(pckt->len);
if (rc) {
LOG_ERR("SAF EC Portal RPMC size out of bounds");
return rc;
}
if (!(regs->SAF_CFG_CS1_OPD & SAF_CFG_CS_OPC_RPMC_OP2_MSK)) {
LOG_ERR("SAF CS1 RPMC opcode not configured");
return -EIO;
}
n = pckt->len;
break;
default:
LOG_ERR("SAF EC Portal bad cmd");
return -EAGAIN;
}
LOG_DBG("%s params val done", __func__);
regs->SAF_ECP_INTEN = 0;
regs->SAF_ECP_STATUS = MCHP_SAF_ECP_STS_MASK;
mchp_xec_ecia_girq_src_clr(safirq->gid, safirq->gpos);
regs->SAF_ECP_INTEN = BIT(MCHP_SAF_ECP_INTEN_DONE_POS);
regs->SAF_ECP_FLAR = pckt->flash_addr;
regs->SAF_ECP_BFAR = (uint32_t)&slave_mem[0];
scmd = MCHP_SAF_ECP_CMD_PUT_FLASH_NP |
((uint32_t)cmd << MCHP_SAF_ECP_CMD_CTYPE_POS) |
((n << MCHP_SAF_ECP_CMD_LEN_POS) & MCHP_SAF_ECP_CMD_LEN_MASK);
LOG_DBG("%s ECP_FLAR=0x%x", __func__, regs->SAF_ECP_FLAR);
LOG_DBG("%s ECP_BFAR=0x%x", __func__, regs->SAF_ECP_BFAR);
LOG_DBG("%s ECP_CMD=0x%x", __func__, scmd);
regs->SAF_ECP_CMD = scmd;
regs->SAF_ECP_START = MCHP_SAF_ECP_START;
rc = k_sem_take(&xdat->ecp_lock, K_MSEC(MAX_SAF_FLASH_TIMEOUT_MS));
if (rc == -EAGAIN) {
LOG_ERR("%s timeout", __func__);
return -ETIMEDOUT;
}
LOG_DBG("%s wake on semaphore", __func__);
n = regs->SAF_ECP_STATUS;
/* clear hardware status and check for errors */
if (n & err_mask) {
regs->SAF_ECP_STATUS = n;
LOG_ERR("%s error %x", __func__, n);
return -EIO;
}
if (cmd == MCHP_SAF_ECP_CMD_READ) {
memcpy(pckt->buf, slave_mem, pckt->len);
}
return rc;
}
/* Flash read using SAF EC Portal */
static int saf_xec_flash_read(const struct device *dev,
struct espi_saf_packet *pckt)
{
LOG_DBG("%s", __func__);
return saf_ecp_access(dev, pckt, MCHP_SAF_ECP_CMD_READ);
}
/* Flash write using SAF EC Portal */
static int saf_xec_flash_write(const struct device *dev,
struct espi_saf_packet *pckt)
{
return saf_ecp_access(dev, pckt, MCHP_SAF_ECP_CMD_WRITE);
}
/* Flash erase using SAF EC Portal */
static int saf_xec_flash_erase(const struct device *dev,
struct espi_saf_packet *pckt)
{
return saf_ecp_access(dev, pckt, MCHP_SAF_ECP_CMD_ERASE);
}
static int espi_saf_xec_manage_callback(const struct device *dev,
struct espi_callback *callback,
bool set)
{
struct espi_saf_xec_data *data = dev->data;
return espi_manage_callback(&data->callbacks, callback, set);
}
static int espi_saf_xec_activate(const struct device *dev)
{
if (dev == NULL) {
return -EINVAL;
}
const struct espi_saf_xec_config * const xcfg = dev->config;
struct mchp_espi_saf * const regs = xcfg->saf_base;
const struct espi_xec_irq_info *safirq = &xcfg->irq_info_list[1];
regs->SAF_ESPI_MON_STATUS = MCHP_SAF_ESPI_MON_STS_IEN_MSK;
mchp_xec_ecia_girq_src_clr(safirq->gid, safirq->gpos);
regs->SAF_FL_CFG_MISC |= MCHP_SAF_FL_CFG_MISC_SAF_EN;
regs->SAF_ESPI_MON_INTEN = (BIT(MCHP_SAF_ESPI_MON_STS_IEN_TMOUT_POS) |
BIT(MCHP_SAF_ESPI_MON_STS_IEN_OOR_POS) |
BIT(MCHP_SAF_ESPI_MON_STS_IEN_AV_POS) |
BIT(MCHP_SAF_ESPI_MON_STS_IEN_BND_4K_POS) |
BIT(MCHP_SAF_ESPI_MON_STS_IEN_ERSZ_POS));
k_busy_wait(1000); /* TODO FIXME get estimate of time interval */
return 0;
}
static void espi_saf_done_isr(const struct device *dev)
{
const struct espi_saf_xec_config * const xcfg = dev->config;
struct espi_saf_xec_data *data = dev->data;
struct mchp_espi_saf * const regs = xcfg->saf_base;
const struct espi_xec_irq_info *safirq = &xcfg->irq_info_list[0];
uint32_t ecp_status = regs->SAF_ECP_STATUS;
struct espi_event evt = { .evt_type = ESPI_BUS_SAF_NOTIFICATION,
.evt_details = BIT(0),
.evt_data = ecp_status };
regs->SAF_ECP_INTEN = 0u;
regs->SAF_ECP_STATUS = BIT(MCHP_SAF_ECP_STS_DONE_POS);
mchp_xec_ecia_girq_src_clr(safirq->gid, safirq->gpos);
data->hwstatus = ecp_status;
LOG_DBG("SAF Done ISR: status=0x%x", ecp_status);
espi_send_callbacks(&data->callbacks, dev, evt);
k_sem_give(&data->ecp_lock);
}
static void espi_saf_err_isr(const struct device *dev)
{
const struct espi_saf_xec_config * const xcfg = dev->config;
struct espi_saf_xec_data *data = dev->data;
struct mchp_espi_saf * const regs = xcfg->saf_base;
const struct espi_xec_irq_info *safirq = &xcfg->irq_info_list[1];
uint32_t mon_status = regs->SAF_ESPI_MON_STATUS;
struct espi_event evt = { .evt_type = ESPI_BUS_PERIPHERAL_NOTIFICATION,
.evt_details = BIT(7),
.evt_data = mon_status };
regs->SAF_ESPI_MON_STATUS = mon_status;
mchp_xec_ecia_girq_src_clr(safirq->gid, safirq->gpos);
data->hwstatus = mon_status;
espi_send_callbacks(&data->callbacks, dev, evt);
}
static const struct espi_saf_driver_api espi_saf_xec_driver_api = {
.config = espi_saf_xec_configuration,
.set_protection_regions = espi_saf_xec_set_pr,
.activate = espi_saf_xec_activate,
.get_channel_status = espi_saf_xec_channel_ready,
.flash_read = saf_xec_flash_read,
.flash_write = saf_xec_flash_write,
.flash_erase = saf_xec_flash_erase,
.manage_callback = espi_saf_xec_manage_callback,
};
static int espi_saf_xec_init(const struct device *dev)
{
const struct espi_saf_xec_config * const xcfg = dev->config;
struct espi_saf_xec_data * const data = dev->data;
struct espi_iom_regs * const espi_iom = xcfg->iom_base;
/* ungate SAF clocks by disabling PCR sleep enable */
z_mchp_xec_pcr_periph_sleep(xcfg->pcr_idx, xcfg->pcr_pos, 0);
/* Configure the channels and its capabilities based on build config */
espi_iom->CAP0 |= MCHP_ESPI_GBL_CAP0_FC_SUPP;
espi_iom->CAPFC &= ~(MCHP_ESPI_FC_CAP_SHARE_MASK);
espi_iom->CAPFC |= MCHP_ESPI_FC_CAP_SHARE_MAF_SAF;
xcfg->irq_config_func();
k_sem_init(&data->ecp_lock, 0, 1);
return 0;
}
/* n = node-id, p = property, i = index */
#define XEC_SAF_IRQ_INFO(n, p, i) \
{ \
.gid = MCHP_XEC_ECIA_GIRQ(DT_PROP_BY_IDX(n, p, i)), \
.gpos = MCHP_XEC_ECIA_GIRQ_POS(DT_PROP_BY_IDX(n, p, i)), \
.anid = MCHP_XEC_ECIA_NVIC_AGGR(DT_PROP_BY_IDX(n, p, i)), \
.dnid = MCHP_XEC_ECIA_NVIC_DIRECT(DT_PROP_BY_IDX(n, p, i)), \
},
#define ESPI_SAF_XEC_DEVICE(n) \
\
static struct espi_saf_xec_data espisaf_xec_data_##n; \
\
static void espi_saf_xec_connect_irqs_##n(void); \
\
static const struct espi_xec_irq_info espi_saf_xec_irq_info_##n[] = { \
DT_INST_FOREACH_PROP_ELEM(n, girqs, XEC_SAF_IRQ_INFO) \
}; \
\
static const struct espi_saf_xec_config espisaf_xec_config_##n = { \
.saf_base = (struct mchp_espi_saf * const)( \
DT_INST_REG_ADDR_BY_IDX(n, 0)), \
.qmspi_base = (struct qmspi_regs * const)( \
DT_INST_REG_ADDR_BY_IDX(n, 1)), \
.saf_comm_base = (struct mchp_espi_saf_comm * const)( \
DT_INST_REG_ADDR_BY_IDX(n, 2)), \
.iom_base = (struct espi_iom_regs * const)( \
DT_REG_ADDR_BY_NAME(DT_INST_PARENT(n), io)), \
.poll_timeout = DT_INST_PROP_OR(n, poll_timeout, \
MCHP_SAF_FLASH_POLL_TIMEOUT), \
.consec_rd_timeout = DT_INST_PROP_OR( \
n, consec_rd_timeout, MCHP_SAF_FLASH_CONSEC_READ_TIMEOUT), \
.sus_chk_delay = DT_INST_PROP_OR(n, sus_chk_delay, \
MCHP_SAF_FLASH_SUS_CHK_DELAY), \
.sus_rsm_interval = DT_INST_PROP_OR(n, sus_rsm_interval, \
MCHP_SAF_FLASH_SUS_RSM_INTERVAL), \
.poll_interval = DT_INST_PROP_OR(n, poll_interval, \
MCHP_SAF_FLASH_POLL_INTERVAL), \
.pcr_idx = DT_INST_PROP_BY_IDX(n, pcrs, 0), \
.pcr_pos = DT_INST_PROP_BY_IDX(n, pcrs, 1), \
.irq_config_func = espi_saf_xec_connect_irqs_##n, \
.irq_info_size = ARRAY_SIZE(espi_saf_xec_irq_info_##n), \
.irq_info_list = espi_saf_xec_irq_info_##n, \
}; \
DEVICE_DT_INST_DEFINE(0, &espi_saf_xec_init, NULL, \
&espisaf_xec_data_##n, \
&espisaf_xec_config_##n, POST_KERNEL, \
CONFIG_ESPI_SAF_INIT_PRIORITY, \
&espi_saf_xec_driver_api); \
\
static void espi_saf_xec_connect_irqs_##n(void) \
{ \
uint8_t girq, gpos; \
\
/* SAF Done */ \
IRQ_CONNECT(DT_INST_IRQ_BY_IDX(n, 0, irq), \
DT_INST_IRQ_BY_IDX(n, 0, priority), \
espi_saf_done_isr, \
DEVICE_DT_INST_GET(n), 0); \
irq_enable(DT_INST_IRQ_BY_IDX(n, 0, irq)); \
\
girq = MCHP_XEC_ECIA_GIRQ(DT_INST_PROP_BY_IDX(n, girqs, 0)); \
gpos = MCHP_XEC_ECIA_GIRQ_POS(DT_INST_PROP_BY_IDX(n, girqs, 0)); \
mchp_xec_ecia_girq_src_en(girq, gpos); \
\
/* SAF Error */ \
IRQ_CONNECT(DT_INST_IRQ_BY_IDX(n, 1, irq), \
DT_INST_IRQ_BY_IDX(n, 1, priority), \
espi_saf_err_isr, \
DEVICE_DT_INST_GET(n), 0); \
irq_enable(DT_INST_IRQ_BY_IDX(n, 1, irq)); \
\
girq = MCHP_XEC_ECIA_GIRQ(DT_INST_PROP_BY_IDX(n, girqs, 1)); \
gpos = MCHP_XEC_ECIA_GIRQ_POS(DT_INST_PROP_BY_IDX(n, girqs, 1)); \
mchp_xec_ecia_girq_src_en(girq, gpos); \
}
DT_INST_FOREACH_STATUS_OKAY(ESPI_SAF_XEC_DEVICE)