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-rw-r--r--src/drivers/usb/pci_xhci/Kconfig6
-rw-r--r--src/drivers/usb/pci_xhci/Makefile.inc1
-rw-r--r--src/drivers/usb/pci_xhci/pci_xhci.c184
-rw-r--r--src/drivers/usb/pci_xhci/pci_xhci.h15
4 files changed, 206 insertions, 0 deletions
diff --git a/src/drivers/usb/pci_xhci/Kconfig b/src/drivers/usb/pci_xhci/Kconfig
new file mode 100644
index 0000000000..715af5b1d4
--- /dev/null
+++ b/src/drivers/usb/pci_xhci/Kconfig
@@ -0,0 +1,6 @@
+config DRIVERS_USB_PCI_XHCI
+ def_bool n
+ depends on HAVE_ACPI_TABLES
+ select XHCI_UTILS
+ help
+ PCI driver that generates ACPI nodes for an xHCI compatible controller.
diff --git a/src/drivers/usb/pci_xhci/Makefile.inc b/src/drivers/usb/pci_xhci/Makefile.inc
new file mode 100644
index 0000000000..73f6b068a8
--- /dev/null
+++ b/src/drivers/usb/pci_xhci/Makefile.inc
@@ -0,0 +1 @@
+ramstage-$(CONFIG_DRIVERS_USB_PCI_XHCI) += pci_xhci.c
diff --git a/src/drivers/usb/pci_xhci/pci_xhci.c b/src/drivers/usb/pci_xhci/pci_xhci.c
new file mode 100644
index 0000000000..cbd3c34b58
--- /dev/null
+++ b/src/drivers/usb/pci_xhci/pci_xhci.c
@@ -0,0 +1,184 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include "pci_xhci.h"
+#include <acpi/acpigen.h>
+#include <console/console.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/xhci.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define PCI_XHCI_CLASSCODE 0x0c0330 /* USB3.0 xHCI controller */
+
+static unsigned int controller_count;
+static const struct device_operations xhci_pci_ops;
+
+struct port_counts {
+ unsigned int high_speed;
+ unsigned int super_speed;
+};
+
+__weak enum cb_err pci_xhci_get_wake_gpe(const struct device *dev, int *gpe)
+{
+ *gpe = -1;
+ return CB_SUCCESS;
+}
+
+static const char *xhci_acpi_name(const struct device *dev)
+{
+ char *name;
+ unsigned int port_id;
+
+ if (dev->path.type == DEVICE_PATH_USB) {
+ /* Ports index start at 1 */
+ port_id = dev->path.usb.port_id + 1;
+
+ switch (dev->path.usb.port_type) {
+ case 0:
+ return "RHUB";
+ case 2:
+ name = malloc(ACPI_NAME_BUFFER_SIZE);
+ snprintf(name, ACPI_NAME_BUFFER_SIZE, "HS%02d", port_id);
+ name[4] = '\0';
+
+ return name;
+ case 3:
+ name = malloc(ACPI_NAME_BUFFER_SIZE);
+ snprintf(name, ACPI_NAME_BUFFER_SIZE, "SS%02d", port_id);
+ name[4] = '\0';
+ return name;
+ }
+ } else if (dev->ops == &xhci_pci_ops) {
+ return dev->name;
+ }
+
+ printk(BIOS_ERR, "%s: Unknown device %s\n", __func__, dev_path(dev));
+ return NULL;
+}
+
+static void handle_xhci_ext_cap(void *context, const struct xhci_ext_cap *cap)
+{
+ const struct xhci_supported_protocol *data;
+ const char *format;
+ char buf[16];
+ struct port_counts *counts = context;
+ unsigned int *dev_num;
+
+ if (cap->cap_id != XHCI_ECP_CAP_ID_SUPP)
+ return;
+
+ data = &cap->supported_protocol;
+
+ xhci_print_supported_protocol(data);
+
+ if (memcmp(data->name, "USB ", 4)) {
+ printk(BIOS_INFO, "%s: Unknown Protocol: %.*s\n", __func__,
+ (int)sizeof(data->name), data->name);
+ return;
+ }
+
+ if (data->major_rev == 3) {
+ format = "SS%02d";
+ dev_num = &counts->super_speed;
+ } else if (data->major_rev == 2) {
+ format = "HS%02d";
+ dev_num = &counts->high_speed;
+ } else {
+ printk(BIOS_INFO, "%s: Unknown USB Version: %#x\n", __func__, data->major_rev);
+ return;
+ }
+
+ for (unsigned int i = 0; i < data->port_count; ++i) {
+ snprintf(buf, sizeof(buf), format, ++(*dev_num));
+ acpigen_write_device(buf);
+ acpigen_write_name_byte("_ADR", data->port_offset + i);
+ acpigen_pop_len();
+ }
+}
+
+static void xhci_add_devices(const struct device *dev)
+{
+ /* Used by the callback to track how many ports have been seen. */
+ struct port_counts counts = {0, 0};
+
+ acpigen_write_device("RHUB");
+ acpigen_write_name_integer("_ADR", 0x00000000);
+
+ xhci_for_each_ext_cap(dev, &counts, handle_xhci_ext_cap);
+
+ acpigen_pop_len();
+}
+
+static void xhci_fill_ssdt(const struct device *dev)
+{
+ int gpe;
+
+ printk(BIOS_DEBUG, "xHCI SSDT generation\n");
+
+ acpigen_write_scope(acpi_device_scope(dev));
+ acpigen_write_device(acpi_device_name(dev));
+
+ acpigen_write_ADR_pci_device(dev);
+ acpigen_write_name_string("_DDN", "xHC - Extensible Host Controller");
+ acpigen_write_STA(acpi_device_status(dev));
+
+ if (pci_xhci_get_wake_gpe(dev, &gpe) == CB_SUCCESS) {
+ printk(BIOS_DEBUG, "%s: Got GPE %d for %s\n", __func__, gpe, dev_path(dev));
+ } else {
+ printk(BIOS_ERR, "%s: Error getting GPE for : %s\n", __func__, dev_path(dev));
+ gpe = -1;
+ }
+
+ if (gpe > 0) {
+ acpigen_write_PRW(gpe, SLP_TYP_S3);
+ acpigen_write_name_integer("_S0W", ACPI_DEVICE_SLEEP_D0);
+ acpigen_write_name_integer("_S3W", ACPI_DEVICE_SLEEP_D3_COLD);
+ acpigen_write_name_integer("_S4W", ACPI_DEVICE_SLEEP_D3_COLD);
+ }
+
+ xhci_add_devices(dev);
+
+ acpigen_pop_len();
+ acpigen_pop_len();
+}
+
+static void xhci_enable(struct device *dev)
+{
+ char *name;
+ uint32_t class = pci_read_config32(dev, PCI_CLASS_REVISION);
+ /* Class code, the upper 3 bytes of PCI_CLASS_REVISION. */
+ class >>= 8;
+
+ if (class != PCI_XHCI_CLASSCODE) {
+ printk(BIOS_ERR, "Incorrect xHCI class code: %#x\n", class);
+ dev->enabled = 0;
+ return;
+ }
+
+ name = malloc(ACPI_NAME_BUFFER_SIZE);
+ snprintf(name, ACPI_NAME_BUFFER_SIZE, "XHC%d", controller_count++);
+ dev->name = name;
+}
+
+static const struct device_operations xhci_pci_ops = {
+ .read_resources = pci_dev_read_resources,
+ .set_resources = pci_dev_set_resources,
+ .enable_resources = pci_dev_enable_resources,
+ .init = pci_dev_init,
+ .scan_bus = scan_static_bus,
+ .enable = xhci_enable,
+ .ops_pci = &pci_dev_ops_pci,
+ .acpi_fill_ssdt = xhci_fill_ssdt,
+ .acpi_name = xhci_acpi_name,
+};
+
+static const unsigned short amd_pci_device_ids[] = {
+ 0
+};
+
+static const struct pci_driver xhci_pci_driver __pci_driver = {
+ .ops = &xhci_pci_ops,
+ .vendor = PCI_VENDOR_ID_AMD,
+ .devices = amd_pci_device_ids,
+};
diff --git a/src/drivers/usb/pci_xhci/pci_xhci.h b/src/drivers/usb/pci_xhci/pci_xhci.h
new file mode 100644
index 0000000000..a923351ac2
--- /dev/null
+++ b/src/drivers/usb/pci_xhci/pci_xhci.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __DRIVERS_USB_PCI_XHCI__
+#define __DRIVERS_USB_PCI_XHCI__
+
+#include <commonlib/bsd/cb_err.h>
+#include <device/device.h>
+
+/*
+ * Returns the wake GPE for the Extensible Host Controller.
+ * Set gpe to -1 if there is no GPE is available.
+ */
+enum cb_err pci_xhci_get_wake_gpe(const struct device *dev, int *gpe);
+
+#endif /* __DRIVERS_USB_PCI_XHCI__ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 07:35:34 +0000