device/xhci: Add functions to work with resource pointers
The XHCI device functions currently use functions that require a access to the device tree. Create variant of these functions that can operate with a resource* as an argument and refactor the existing device*-based functions to operate by calling the resource*-based variants. This is useful for stages like SMM that may not have access to the device tree. BRANCH=guybrush BUG=b:186792595 TEST=Ran on skyrim device, verified that XHCI ACPI tables are still generated correctly. Change-Id: If5a74f9529d5dc6031ec968ef5f40a9cad5ffbc4 Signed-off-by: Robert Zieba <robertzieba@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/69914 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
This commit is contained in:
committed by
Martin L Roth
parent
ac8c378777
commit
219cb952f8
@@ -61,7 +61,8 @@ ramstage-y += mmio.c
|
||||
ramstage-y += resource_allocator_common.c
|
||||
ramstage-y += resource_allocator_v4.c
|
||||
|
||||
ramstage-$(CONFIG_XHCI_UTILS) += xhci.c
|
||||
ramstage-$(CONFIG_XHCI_UTILS) += xhci.c xhci_resource.c
|
||||
smm-$(CONFIG_XHCI_UTILS) += xhci_resource.c
|
||||
|
||||
ramstage-y += gpio.c
|
||||
ramstage-y += mdio.c
|
||||
|
@@ -2,31 +2,18 @@
|
||||
|
||||
#include <console/console.h>
|
||||
#include <device/mmio.h>
|
||||
#include <device/device.h>
|
||||
#include <device/pci_def.h>
|
||||
#include <device/xhci.h>
|
||||
#include <string.h>
|
||||
|
||||
union xhci_ext_caps_header {
|
||||
uint32_t val;
|
||||
struct {
|
||||
uint32_t cap_id : 8;
|
||||
uint32_t next_ptr : 8;
|
||||
uint32_t reserved : 16;
|
||||
};
|
||||
};
|
||||
|
||||
enum cb_err xhci_for_each_ext_cap(const struct device *device, void *context,
|
||||
void (*callback)(void *context,
|
||||
const struct xhci_ext_cap *cap))
|
||||
{
|
||||
struct resource *res;
|
||||
uint32_t *ext_cap_ptr;
|
||||
uint32_t ext_caps_word_offset;
|
||||
union xhci_ext_caps_header header;
|
||||
struct xhci_ext_cap cap;
|
||||
const struct resource *res;
|
||||
|
||||
if (!device || !callback)
|
||||
return CB_ERR_ARG;
|
||||
if (!device)
|
||||
return CB_ERR;
|
||||
|
||||
res = probe_resource(device, PCI_BASE_ADDRESS_0);
|
||||
if (!res) {
|
||||
@@ -35,89 +22,24 @@ enum cb_err xhci_for_each_ext_cap(const struct device *device, void *context,
|
||||
return CB_ERR;
|
||||
}
|
||||
|
||||
if (!(res->flags & IORESOURCE_ASSIGNED)) {
|
||||
printk(BIOS_ERR, "%s: BAR is not assigned\n", __func__);
|
||||
return CB_ERR;
|
||||
}
|
||||
|
||||
if (res->limit > 0xFFFFFFFF) {
|
||||
printk(BIOS_ERR, "%s: 64-bit BAR is not supported\n", __func__);
|
||||
return CB_ERR;
|
||||
}
|
||||
|
||||
ext_caps_word_offset = read16(res2mmio(res, XHCI_HCCPARAMS1_XECP, 0));
|
||||
|
||||
if (!ext_caps_word_offset) {
|
||||
printk(BIOS_ERR, "%s: No extended capabilities defined\n", __func__);
|
||||
return CB_ERR;
|
||||
}
|
||||
|
||||
ext_cap_ptr = res2mmio(res, ext_caps_word_offset << 2, 0);
|
||||
|
||||
while ((uintptr_t)ext_cap_ptr < (uintptr_t)res->limit) {
|
||||
header.val = read32(ext_cap_ptr);
|
||||
|
||||
cap.cap_id = header.cap_id;
|
||||
|
||||
if (header.cap_id == XHCI_ECP_CAP_ID_SUPP) {
|
||||
cap.supported_protocol.reg0 = header.val;
|
||||
cap.supported_protocol.reg1 = read32(ext_cap_ptr + 1);
|
||||
cap.supported_protocol.reg2 = read32(ext_cap_ptr + 2);
|
||||
}
|
||||
|
||||
callback(context, &cap);
|
||||
|
||||
if (!header.next_ptr)
|
||||
break;
|
||||
|
||||
ext_cap_ptr += header.next_ptr;
|
||||
}
|
||||
|
||||
return CB_SUCCESS;
|
||||
}
|
||||
|
||||
struct supported_usb_cap_context {
|
||||
void *context;
|
||||
void (*callback)(void *context, const struct xhci_supported_protocol *data);
|
||||
};
|
||||
|
||||
static void xhci_supported_usb_cap_handler(void *context, const struct xhci_ext_cap *cap)
|
||||
{
|
||||
const struct xhci_supported_protocol *data;
|
||||
struct supported_usb_cap_context *internal_context = context;
|
||||
|
||||
if (cap->cap_id != XHCI_ECP_CAP_ID_SUPP)
|
||||
return;
|
||||
|
||||
data = &cap->supported_protocol;
|
||||
|
||||
if (memcmp(data->name, "USB ", 4)) {
|
||||
printk(BIOS_DEBUG, "%s: Unknown Protocol: %.*s\n", __func__,
|
||||
(int)sizeof(data->name), data->name);
|
||||
return;
|
||||
}
|
||||
|
||||
internal_context->callback(internal_context->context, data);
|
||||
return xhci_resource_for_each_ext_cap(res, context, callback);
|
||||
}
|
||||
|
||||
enum cb_err xhci_for_each_supported_usb_cap(
|
||||
const struct device *device, void *context,
|
||||
void (*callback)(void *context, const struct xhci_supported_protocol *data))
|
||||
{
|
||||
struct supported_usb_cap_context internal_context = {
|
||||
.context = context,
|
||||
.callback = callback,
|
||||
};
|
||||
const struct resource *res;
|
||||
|
||||
return xhci_for_each_ext_cap(device, &internal_context, xhci_supported_usb_cap_handler);
|
||||
}
|
||||
if (!device)
|
||||
return CB_ERR;
|
||||
|
||||
void xhci_print_supported_protocol(const struct xhci_supported_protocol *supported_protocol)
|
||||
{
|
||||
printk(BIOS_DEBUG, "xHCI Supported Protocol:\n");
|
||||
printk(BIOS_DEBUG, " Major: %#x, Minor: %#x, Protocol: '%.*s'\n",
|
||||
supported_protocol->major_rev, supported_protocol->minor_rev,
|
||||
(int)sizeof(supported_protocol->name), supported_protocol->name);
|
||||
printk(BIOS_DEBUG, " Port Offset: %d, Port Count: %d\n",
|
||||
supported_protocol->port_offset, supported_protocol->port_count);
|
||||
res = probe_resource(device, PCI_BASE_ADDRESS_0);
|
||||
if (!res) {
|
||||
printk(BIOS_ERR, "%s: Unable to find BAR resource for %s\n", __func__,
|
||||
dev_path(device));
|
||||
return CB_ERR;
|
||||
}
|
||||
|
||||
return xhci_resource_for_each_supported_usb_cap(res, context, callback);
|
||||
}
|
||||
|
116
src/device/xhci_resource.c
Normal file
116
src/device/xhci_resource.c
Normal file
@@ -0,0 +1,116 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
||||
|
||||
#include <arch/mmio.h>
|
||||
#include <console/console.h>
|
||||
#include <device/pci_def.h>
|
||||
#include <device/xhci.h>
|
||||
#include <string.h>
|
||||
|
||||
union xhci_ext_caps_header {
|
||||
uint32_t val;
|
||||
struct {
|
||||
uint32_t cap_id : 8;
|
||||
uint32_t next_ptr : 8;
|
||||
uint32_t reserved : 16;
|
||||
};
|
||||
};
|
||||
|
||||
enum cb_err xhci_resource_for_each_ext_cap(const struct resource *res, void *context,
|
||||
void (*callback)(void *context,
|
||||
const struct xhci_ext_cap *cap))
|
||||
{
|
||||
uint32_t *ext_cap_ptr;
|
||||
uint32_t ext_caps_word_offset;
|
||||
union xhci_ext_caps_header header;
|
||||
struct xhci_ext_cap cap;
|
||||
|
||||
if (!res || !callback)
|
||||
return CB_ERR_ARG;
|
||||
|
||||
if (!(res->flags & IORESOURCE_ASSIGNED)) {
|
||||
printk(BIOS_ERR, "%s: BAR is not assigned\n", __func__);
|
||||
return CB_ERR;
|
||||
}
|
||||
|
||||
if (res->limit > 0xFFFFFFFF) {
|
||||
printk(BIOS_ERR, "%s: 64-bit BAR is not supported\n", __func__);
|
||||
return CB_ERR;
|
||||
}
|
||||
|
||||
ext_caps_word_offset = read16(res2mmio(res, XHCI_HCCPARAMS1_XECP, 0));
|
||||
|
||||
if (!ext_caps_word_offset) {
|
||||
printk(BIOS_ERR, "%s: No extended capabilities defined\n", __func__);
|
||||
return CB_ERR;
|
||||
}
|
||||
|
||||
ext_cap_ptr = res2mmio(res, ext_caps_word_offset << 2, 0);
|
||||
|
||||
while ((uintptr_t)ext_cap_ptr < (uintptr_t)res->limit) {
|
||||
header.val = read32(ext_cap_ptr);
|
||||
|
||||
cap.cap_id = header.cap_id;
|
||||
|
||||
if (header.cap_id == XHCI_ECP_CAP_ID_SUPP) {
|
||||
cap.supported_protocol.reg0 = header.val;
|
||||
cap.supported_protocol.reg1 = read32(ext_cap_ptr + 1);
|
||||
cap.supported_protocol.reg2 = read32(ext_cap_ptr + 2);
|
||||
}
|
||||
|
||||
callback(context, &cap);
|
||||
|
||||
if (!header.next_ptr)
|
||||
break;
|
||||
|
||||
ext_cap_ptr += header.next_ptr;
|
||||
}
|
||||
|
||||
return CB_SUCCESS;
|
||||
}
|
||||
|
||||
struct supported_usb_cap_context {
|
||||
void *context;
|
||||
void (*callback)(void *context, const struct xhci_supported_protocol *data);
|
||||
};
|
||||
|
||||
static void xhci_supported_usb_cap_handler(void *context, const struct xhci_ext_cap *cap)
|
||||
{
|
||||
const struct xhci_supported_protocol *data;
|
||||
struct supported_usb_cap_context *internal_context = context;
|
||||
|
||||
if (cap->cap_id != XHCI_ECP_CAP_ID_SUPP)
|
||||
return;
|
||||
|
||||
data = &cap->supported_protocol;
|
||||
|
||||
if (memcmp(data->name, "USB ", 4)) {
|
||||
printk(BIOS_DEBUG, "%s: Unknown Protocol: %.*s\n", __func__,
|
||||
(int)sizeof(data->name), data->name);
|
||||
return;
|
||||
}
|
||||
|
||||
internal_context->callback(internal_context->context, data);
|
||||
}
|
||||
|
||||
enum cb_err xhci_resource_for_each_supported_usb_cap(
|
||||
const struct resource *res, void *context,
|
||||
void (*callback)(void *context, const struct xhci_supported_protocol *data))
|
||||
{
|
||||
struct supported_usb_cap_context internal_context = {
|
||||
.context = context,
|
||||
.callback = callback,
|
||||
};
|
||||
|
||||
return xhci_resource_for_each_ext_cap(res, &internal_context,
|
||||
xhci_supported_usb_cap_handler);
|
||||
}
|
||||
|
||||
void xhci_print_supported_protocol(const struct xhci_supported_protocol *supported_protocol)
|
||||
{
|
||||
printk(BIOS_DEBUG, "xHCI Supported Protocol:\n");
|
||||
printk(BIOS_DEBUG, " Major: %#x, Minor: %#x, Protocol: '%.*s'\n",
|
||||
supported_protocol->major_rev, supported_protocol->minor_rev,
|
||||
(int)sizeof(supported_protocol->name), supported_protocol->name);
|
||||
printk(BIOS_DEBUG, " Port Offset: %d, Port Count: %d\n",
|
||||
supported_protocol->port_offset, supported_protocol->port_count);
|
||||
}
|
@@ -97,6 +97,9 @@ struct xhci_usb_info {
|
||||
/**
|
||||
* Iterates over the xHCI Extended Capabilities List.
|
||||
*/
|
||||
enum cb_err xhci_resource_for_each_ext_cap(const struct resource *res, void *context,
|
||||
void (*callback)(void *context,
|
||||
const struct xhci_ext_cap *cap));
|
||||
enum cb_err xhci_for_each_ext_cap(const struct device *device, void *context,
|
||||
void (*callback)(void *context,
|
||||
const struct xhci_ext_cap *cap));
|
||||
@@ -108,6 +111,9 @@ enum cb_err xhci_for_each_ext_cap(const struct device *device, void *context,
|
||||
enum cb_err xhci_for_each_supported_usb_cap(
|
||||
const struct device *device, void *context,
|
||||
void (*callback)(void *context, const struct xhci_supported_protocol *data));
|
||||
enum cb_err xhci_resource_for_each_supported_usb_cap(
|
||||
const struct resource *res, void *context,
|
||||
void (*callback)(void *context, const struct xhci_supported_protocol *data));
|
||||
|
||||
void xhci_print_supported_protocol(const struct xhci_supported_protocol *supported_protocol);
|
||||
|
||||
|
Reference in New Issue
Block a user