From 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:46:07 +0000
Subject: [PATCH] add audio
---
kernel/arch/xtensa/kernel/pci.c | 133 -------------------------------------------
1 files changed, 2 insertions(+), 131 deletions(-)
diff --git a/kernel/arch/xtensa/kernel/pci.c b/kernel/arch/xtensa/kernel/pci.c
index 21f13e9..3f32e27 100644
--- a/kernel/arch/xtensa/kernel/pci.c
+++ b/kernel/arch/xtensa/kernel/pci.c
@@ -1,12 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* arch/xtensa/kernel/pci.c
*
* PCI bios-type initialisation for PCI machines
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
*
* Copyright (C) 2001-2005 Tensilica Inc.
*
@@ -14,7 +10,6 @@
* IO functions copied from sparc.
*
* Chris Zankel <chris@zankel.net>
- *
*/
#include <linux/kernel.h>
@@ -24,27 +19,10 @@
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/errno.h>
-#include <linux/bootmem.h>
+#include <linux/memblock.h>
#include <asm/pci-bridge.h>
#include <asm/platform.h>
-
-/* PCI Controller */
-
-
-/*
- * pcibios_alloc_controller
- * pcibios_enable_device
- * pcibios_fixups
- * pcibios_align_resource
- * pcibios_fixup_bus
- * pci_bus_add_device
- */
-
-static struct pci_controller *pci_ctrl_head;
-static struct pci_controller **pci_ctrl_tail = &pci_ctrl_head;
-
-static int pci_bus_count;
/*
* We need to avoid collisions with `mirrored' VGA ports
@@ -80,119 +58,12 @@
return start;
}
-static void __init pci_controller_apertures(struct pci_controller *pci_ctrl,
- struct list_head *resources)
-{
- struct resource *res;
- unsigned long io_offset;
- int i;
-
- io_offset = (unsigned long)pci_ctrl->io_space.base;
- res = &pci_ctrl->io_resource;
- if (!res->flags) {
- if (io_offset)
- pr_err("I/O resource not set for host bridge %d\n",
- pci_ctrl->index);
- res->start = 0;
- res->end = IO_SPACE_LIMIT;
- res->flags = IORESOURCE_IO;
- }
- res->start += io_offset;
- res->end += io_offset;
- pci_add_resource_offset(resources, res, io_offset);
-
- for (i = 0; i < 3; i++) {
- res = &pci_ctrl->mem_resources[i];
- if (!res->flags) {
- if (i > 0)
- continue;
- pr_err("Memory resource not set for host bridge %d\n",
- pci_ctrl->index);
- res->start = 0;
- res->end = ~0U;
- res->flags = IORESOURCE_MEM;
- }
- pci_add_resource(resources, res);
- }
-}
-
-static int __init pcibios_init(void)
-{
- struct pci_controller *pci_ctrl;
- struct list_head resources;
- struct pci_bus *bus;
- int next_busno = 0, ret;
-
- pr_info("PCI: Probing PCI hardware\n");
-
- /* Scan all of the recorded PCI controllers. */
- for (pci_ctrl = pci_ctrl_head; pci_ctrl; pci_ctrl = pci_ctrl->next) {
- pci_ctrl->last_busno = 0xff;
- INIT_LIST_HEAD(&resources);
- pci_controller_apertures(pci_ctrl, &resources);
- bus = pci_scan_root_bus(NULL, pci_ctrl->first_busno,
- pci_ctrl->ops, pci_ctrl, &resources);
- if (!bus)
- continue;
-
- pci_ctrl->bus = bus;
- pci_ctrl->last_busno = bus->busn_res.end;
- if (next_busno <= pci_ctrl->last_busno)
- next_busno = pci_ctrl->last_busno+1;
- }
- pci_bus_count = next_busno;
- ret = platform_pcibios_fixup();
- if (ret)
- return ret;
-
- for (pci_ctrl = pci_ctrl_head; pci_ctrl; pci_ctrl = pci_ctrl->next) {
- if (pci_ctrl->bus)
- pci_bus_add_devices(pci_ctrl->bus);
- }
-
- return 0;
-}
-
-subsys_initcall(pcibios_init);
-
void pcibios_fixup_bus(struct pci_bus *bus)
{
if (bus->parent) {
/* This is a subordinate bridge */
pci_read_bridge_bases(bus);
}
-}
-
-void pcibios_set_master(struct pci_dev *dev)
-{
- /* No special bus mastering setup handling */
-}
-
-int pcibios_enable_device(struct pci_dev *dev, int mask)
-{
- u16 cmd, old_cmd;
- int idx;
- struct resource *r;
-
- pci_read_config_word(dev, PCI_COMMAND, &cmd);
- old_cmd = cmd;
- for (idx=0; idx<6; idx++) {
- r = &dev->resource[idx];
- if (!r->start && r->end) {
- pci_err(dev, "can't enable device: resource collisions\n");
- return -EINVAL;
- }
- if (r->flags & IORESOURCE_IO)
- cmd |= PCI_COMMAND_IO;
- if (r->flags & IORESOURCE_MEM)
- cmd |= PCI_COMMAND_MEMORY;
- }
- if (cmd != old_cmd) {
- pci_info(dev, "enabling device (%04x -> %04x)\n", old_cmd, cmd);
- pci_write_config_word(dev, PCI_COMMAND, cmd);
- }
-
- return 0;
}
/*
--
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