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dm:ith: intel trace hub as ACPI device

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Add "ith" to ACPI device list to  support tracing capabilities,
by --acpidev_pt parameter.

Tracked-On: #8730
Signed-off-by : Singh,Ashish <ashish.singh@intel.com>
This commit is contained in:
Singh, Ashish 2024-08-14 09:54:33 +05:30
parent 8cb6fa6836
commit 498c0f53d7
2 changed files with 124 additions and 0 deletions
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1
devicemodel/Makefile
View File

@ -129,6 +129,7 @@ SRCS += hw/platform/tpm/tpm_emulator.c
SRCS += hw/platform/tpm/tpm_crb.c
SRCS += hw/platform/tpm/tpm.c
SRCS += hw/platform/uart.c
SRCS += hw/platform/ith.c
SRCS += hw/platform/debugexit.c
SRCS += hw/pci/wdt_i6300esb.c
SRCS += hw/pci/lpc.c

123
devicemodel/hw/platform/ith.c Normal file
View File

@ -0,0 +1,123 @@
/*
* Copyright (C) 2018-2022 Intel Corporation.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <errno.h>
#include "acpi.h"
#include "vmmapi.h"
#include "log.h"
#include "acpi_dev.h"
#include "dm.h"
static int pt_ith_init(struct vmctx *ctx, struct acrn_acpidev *ith_dev);
static int is_hid_ith(char *opts);
static void ith_write_dsdt(struct vmctx *ctx, struct acpi_dev *ith_dev);
static void ith_write_madt(struct vmctx *ctx, FILE *fp, struct acpi_dev *ith_dev);
struct acpi_dev_ops pt_ith_dev_ops = {
.match = is_hid_ith,
.init = pt_ith_init,
.deinit = deinit_pt_acpidev,
.write_dsdt = ith_write_dsdt,
.write_madt = ith_write_madt,
};
DEFINE_ACPI_DEV(pt_ith_dev_ops);
char* ith_device_id[] = {
/* Tiger Lake */
"INTC1001",
/* Alder Lake */
"INTC1001",
/* Elkhart Lake */
"INTC1001"
};
static int pt_ith_init(struct vmctx *ctx, struct acrn_acpidev *ith_dev)
{
if(!ctx || !ith_dev)
return -EINVAL;
strcpy(ith_dev->name, "ith");
return init_pt_acpidev(ctx, ith_dev);
}
static int is_hid_ith(char *opts)
{
char *hid, *vtopts, *devopts;
if (!opts || !*opts)
return false;
vtopts = devopts = strdup(opts);
hid = strsep(&devopts, ",");
if (!hid) {
free(vtopts);
return false;
}
for (int i = 0; i < (sizeof(ith_device_id) / sizeof(ith_device_id[0])); i++) {
if (strstr(hid, ith_device_id[i]) != NULL) {
strcpy(pt_ith_dev_ops.hid, hid);
free(vtopts);
return true;
}
}
free(vtopts);
return false;
}
static void ith_write_dsdt(struct vmctx *ctx, struct acpi_dev *ith_dev)
{
dsdt_line("");
dsdt_line(" Scope (_SB)");
dsdt_line(" {");
dsdt_line(" Device (GPI%s)", ith_dev->uid);
dsdt_line(" {");
dsdt_line(" Method (_HID, 0, NotSerialized)");
dsdt_line(" {");
dsdt_line(" Return (\"%s\")", ith_dev->hid);
dsdt_line(" }");
dsdt_line(" Name (_UID, %s)", ith_dev->uid);
dsdt_line(" Name (_CRS, ResourceTemplate ()");
dsdt_line(" {");
dsdt_indent(4);
for (int i = 0; i < ACPIDEV_RES_NUM; i++) {
if (ith_dev->dev.res[i].type == IRQ_RES) {
dsdt_line(" Interrupt (ResourceConsumer, Level, ActiveLow, Shared, ,,)");
dsdt_line(" {");
dsdt_line(" 0X%08X,", ith_dev->dev.res[i].irq_res.irq);
dsdt_line(" }");
} else if (ith_dev->dev.res[i].type == MEMORY_RES) {
dsdt_fixed_mem32(ith_dev->dev.res[i].mmio_res.user_vm_pa, ith_dev->dev.res[i].mmio_res.size);
}
}
dsdt_unindent(4);
dsdt_line(" })");
dsdt_line(" }");
dsdt_line(" }");
}
static void ith_write_madt(struct vmctx *ctx, FILE *fp, struct acpi_dev *ith_dev)
{
for (int i = 0; i < ACPIDEV_RES_NUM; i++) {
if (ith_dev->dev.res[i].type == IRQ_RES) {
EFPRINTF(fp, "[0001]\t\tSubtable Type : 02\n");
EFPRINTF(fp, "[0001]\t\tLength : 0A\n");
EFPRINTF(fp, "[0001]\t\tBus : 00\n");
EFPRINTF(fp, "[0001]\t\tSource : %02X\n", ith_dev->dev.res[i].irq_res.irq);
EFPRINTF(fp, "[0004]\t\tInterrupt : %08X\n", ith_dev->dev.res[i].irq_res.irq);
EFPRINTF(fp, "[0002]\t\tFlags (decoded below) : 000F\n");
EFPRINTF(fp, "\t\t\tPolarity : %d\n", ith_dev->dev.res[i].irq_res.polarity);
EFPRINTF(fp, "\t\t\tTrigger Mode : %d\n", ith_dev->dev.res[i].irq_res.trigger_mode);
EFPRINTF(fp, "\n");
}
}
}