a662777b6f
Change-Id: I8da01cd462225b633bf2043ab33b35aeddc8d55a Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Reviewed-on: https://review.coreboot.org/27668 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Rudolph <siro@das-labor.org>
402 lines
10 KiB
C
402 lines
10 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2004 Linux Networx
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* (Written by Eric Biederman <ebiederman@lnxi.com> for Linux Networx)
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* Copyright (C) 2004 Li-Ta Lo <ollie@lanl.gov>
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* Copyright (C) 2005 Tyan
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* (Written by Yinghai Lu <yhlu@tyan.com> for Tyan)
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* Copyright (C) 2013 Nico Huber <nico.h@gmx.de>
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* Copyright (C) 2018 Felix Held <felix-coreboot@felixheld.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <console/console.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <arch/io.h>
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#include <device/device.h>
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#include <device/pnp.h>
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/* PNP config mode wrappers */
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void pnp_enter_conf_mode(struct device *dev)
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{
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if (dev->ops->ops_pnp_mode)
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dev->ops->ops_pnp_mode->enter_conf_mode(dev);
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}
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void pnp_exit_conf_mode(struct device *dev)
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{
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if (dev->ops->ops_pnp_mode)
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dev->ops->ops_pnp_mode->exit_conf_mode(dev);
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}
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/* PNP fundamental operations */
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void pnp_write_config(struct device *dev, u8 reg, u8 value)
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{
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outb(reg, dev->path.pnp.port);
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outb(value, dev->path.pnp.port + 1);
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}
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u8 pnp_read_config(struct device *dev, u8 reg)
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{
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outb(reg, dev->path.pnp.port);
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return inb(dev->path.pnp.port + 1);
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}
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void pnp_set_logical_device(struct device *dev)
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{
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pnp_write_config(dev, 0x07, dev->path.pnp.device & 0xff);
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}
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void pnp_set_enable(struct device *dev, int enable)
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{
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u8 tmp, bitpos;
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tmp = pnp_read_config(dev, 0x30);
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/* Handle virtual devices, which share the same LDN register. */
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bitpos = (dev->path.pnp.device >> 8) & 0x7;
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if (enable)
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tmp |= (1 << bitpos);
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else
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tmp &= ~(1 << bitpos);
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pnp_write_config(dev, 0x30, tmp);
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}
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int pnp_read_enable(struct device *dev)
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{
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u8 tmp, bitpos;
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tmp = pnp_read_config(dev, 0x30);
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/* Handle virtual devices, which share the same LDN register. */
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bitpos = (dev->path.pnp.device >> 8) & 0x7;
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return !!(tmp & (1 << bitpos));
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}
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void pnp_set_iobase(struct device *dev, u8 index, u16 iobase)
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{
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/* Index == 0x60 or 0x62. */
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pnp_write_config(dev, index + 0, (iobase >> 8) & 0xff);
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pnp_write_config(dev, index + 1, iobase & 0xff);
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}
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void pnp_set_irq(struct device *dev, u8 index, u8 irq)
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{
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/* Index == 0x70 or 0x72. */
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pnp_write_config(dev, index, irq);
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}
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void pnp_set_drq(struct device *dev, u8 index, u8 drq)
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{
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/* Index == 0x74. */
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pnp_write_config(dev, index, drq & 0xff);
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}
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/* PNP device operations */
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void pnp_read_resources(struct device *dev)
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{
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return;
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}
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static void pnp_set_resource(struct device *dev, struct resource *resource)
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{
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if (!(resource->flags & IORESOURCE_ASSIGNED)) {
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/* The PNP_MSC super IO registers have the IRQ flag set. If no
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value is assigned in the devicetree, the corresponding
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PNP_MSC register doesn't get written, which should be printed
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as warning and not as error. */
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if (resource->flags & IORESOURCE_IRQ &&
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(resource->index != PNP_IDX_IRQ0) &&
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(resource->index != PNP_IDX_IRQ1))
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printk(BIOS_WARNING, "WARNING: %s %02lx %s size: "
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"0x%010llx not assigned\n", dev_path(dev),
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resource->index, resource_type(resource),
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resource->size);
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else
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printk(BIOS_ERR, "ERROR: %s %02lx %s size: 0x%010llx "
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"not assigned\n", dev_path(dev), resource->index,
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resource_type(resource), resource->size);
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return;
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}
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/* Now store the resource. */
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if (resource->flags & IORESOURCE_IO) {
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pnp_set_iobase(dev, resource->index, resource->base);
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} else if (resource->flags & IORESOURCE_DRQ) {
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pnp_set_drq(dev, resource->index, resource->base);
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} else if (resource->flags & IORESOURCE_IRQ) {
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pnp_set_irq(dev, resource->index, resource->base);
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} else {
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printk(BIOS_ERR, "ERROR: %s %02lx unknown resource type\n",
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dev_path(dev), resource->index);
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return;
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}
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resource->flags |= IORESOURCE_STORED;
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report_resource_stored(dev, resource, "");
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}
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void pnp_set_resources(struct device *dev)
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{
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struct resource *res;
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pnp_enter_conf_mode(dev);
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/* Select the logical device (LDN). */
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pnp_set_logical_device(dev);
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/* Paranoia says I should disable the device here... */
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for (res = dev->resource_list; res; res = res->next)
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pnp_set_resource(dev, res);
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pnp_exit_conf_mode(dev);
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}
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void pnp_enable_resources(struct device *dev)
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{
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pnp_enter_conf_mode(dev);
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pnp_set_logical_device(dev);
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pnp_set_enable(dev, 1);
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pnp_exit_conf_mode(dev);
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}
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void pnp_enable(struct device *dev)
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{
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if (!dev->enabled) {
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pnp_enter_conf_mode(dev);
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pnp_set_logical_device(dev);
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pnp_set_enable(dev, 0);
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pnp_exit_conf_mode(dev);
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}
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}
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void pnp_alt_enable(struct device *dev)
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{
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pnp_enter_conf_mode(dev);
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pnp_set_logical_device(dev);
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pnp_set_enable(dev, !!dev->enabled);
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pnp_exit_conf_mode(dev);
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}
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struct device_operations pnp_ops = {
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.read_resources = pnp_read_resources,
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.set_resources = pnp_set_resources,
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.enable_resources = pnp_enable_resources,
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.enable = pnp_enable,
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};
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/* PNP chip operations */
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static void pnp_get_ioresource(struct device *dev, u8 index, u16 mask)
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{
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struct resource *resource;
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unsigned int bit;
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/* If none of the mask bits is set, the resource would occupy the whole
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IO space leading to IO resource conflicts with the other devices */
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if (!mask) {
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printk(BIOS_ERR, "ERROR: device %s index %d has no mask.\n",
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dev_path(dev), index);
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return;
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}
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resource = new_resource(dev, index);
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resource->flags |= IORESOURCE_IO;
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/* Calculate IO region size which is determined by the first one from
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the LSB of the mask. */
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for (bit = 0; bit <= 15 && (mask & (1 << bit)) == 0; ++bit)
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;
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resource->gran = bit;
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resource->align = bit;
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resource->size = 1 << bit;
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/* Calculate IO region address limit which is determined by the first
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one from the MSB of the mask. */
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for (bit = 15; bit != 0 && (mask & (1 << bit)) == 0; --bit)
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;
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resource->limit = (1 << (bit + 1)) - 1;
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/* The block of ones in the mask is expected to be continuous.
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If there is any zero inbetween the block of ones, it is ignored
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in the calculation of the resource size and limit. */
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if (mask != (resource->limit ^ (resource->size - 1)))
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printk(BIOS_WARNING,
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"WARNING: mask of device %s index %d is wrong.\n",
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dev_path(dev), index);
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}
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static void get_resources(struct device *dev, struct pnp_info *info)
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{
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struct resource *resource;
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if (info->flags & PNP_IO0)
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pnp_get_ioresource(dev, PNP_IDX_IO0, info->io0);
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if (info->flags & PNP_IO1)
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pnp_get_ioresource(dev, PNP_IDX_IO1, info->io1);
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if (info->flags & PNP_IO2)
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pnp_get_ioresource(dev, PNP_IDX_IO2, info->io2);
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if (info->flags & PNP_IO3)
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pnp_get_ioresource(dev, PNP_IDX_IO3, info->io3);
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if (info->flags & PNP_IRQ0) {
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resource = new_resource(dev, PNP_IDX_IRQ0);
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resource->size = 1;
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resource->flags |= IORESOURCE_IRQ;
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}
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if (info->flags & PNP_IRQ1) {
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resource = new_resource(dev, PNP_IDX_IRQ1);
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resource->size = 1;
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resource->flags |= IORESOURCE_IRQ;
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}
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if (info->flags & PNP_DRQ0) {
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resource = new_resource(dev, PNP_IDX_DRQ0);
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resource->size = 1;
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resource->flags |= IORESOURCE_DRQ;
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}
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if (info->flags & PNP_DRQ1) {
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resource = new_resource(dev, PNP_IDX_DRQ1);
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resource->size = 1;
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resource->flags |= IORESOURCE_DRQ;
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}
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/*
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* These are not IRQs, but set the flag to have the
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* resource allocator do the right thing.
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*/
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if (info->flags & PNP_EN) {
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resource = new_resource(dev, PNP_IDX_EN);
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resource->size = 1;
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resource->flags |= IORESOURCE_IRQ;
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}
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if (info->flags & PNP_MSC0) {
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resource = new_resource(dev, PNP_IDX_MSC0);
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resource->size = 1;
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resource->flags |= IORESOURCE_IRQ;
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}
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if (info->flags & PNP_MSC1) {
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resource = new_resource(dev, PNP_IDX_MSC1);
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resource->size = 1;
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resource->flags |= IORESOURCE_IRQ;
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}
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if (info->flags & PNP_MSC2) {
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resource = new_resource(dev, PNP_IDX_MSC2);
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resource->size = 1;
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resource->flags |= IORESOURCE_IRQ;
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}
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if (info->flags & PNP_MSC3) {
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resource = new_resource(dev, PNP_IDX_MSC3);
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resource->size = 1;
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resource->flags |= IORESOURCE_IRQ;
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}
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if (info->flags & PNP_MSC4) {
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resource = new_resource(dev, PNP_IDX_MSC4);
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resource->size = 1;
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resource->flags |= IORESOURCE_IRQ;
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}
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if (info->flags & PNP_MSC5) {
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resource = new_resource(dev, PNP_IDX_MSC5);
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resource->size = 1;
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resource->flags |= IORESOURCE_IRQ;
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}
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if (info->flags & PNP_MSC6) {
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resource = new_resource(dev, PNP_IDX_MSC6);
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resource->size = 1;
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resource->flags |= IORESOURCE_IRQ;
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}
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if (info->flags & PNP_MSC7) {
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resource = new_resource(dev, PNP_IDX_MSC7);
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resource->size = 1;
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resource->flags |= IORESOURCE_IRQ;
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}
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if (info->flags & PNP_MSC8) {
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resource = new_resource(dev, PNP_IDX_MSC8);
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resource->size = 1;
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resource->flags |= IORESOURCE_IRQ;
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}
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if (info->flags & PNP_MSC9) {
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resource = new_resource(dev, PNP_IDX_MSC9);
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resource->size = 1;
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resource->flags |= IORESOURCE_IRQ;
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}
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if (info->flags & PNP_MSCA) {
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resource = new_resource(dev, PNP_IDX_MSCA);
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resource->size = 1;
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resource->flags |= IORESOURCE_IRQ;
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}
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if (info->flags & PNP_MSCB) {
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resource = new_resource(dev, PNP_IDX_MSCB);
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resource->size = 1;
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resource->flags |= IORESOURCE_IRQ;
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}
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if (info->flags & PNP_MSCC) {
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resource = new_resource(dev, PNP_IDX_MSCC);
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resource->size = 1;
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resource->flags |= IORESOURCE_IRQ;
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}
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if (info->flags & PNP_MSCD) {
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resource = new_resource(dev, PNP_IDX_MSCD);
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resource->size = 1;
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resource->flags |= IORESOURCE_IRQ;
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}
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if (info->flags & PNP_MSCE) {
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resource = new_resource(dev, PNP_IDX_MSCE);
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resource->size = 1;
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resource->flags |= IORESOURCE_IRQ;
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}
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}
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void pnp_enable_devices(struct device *base_dev, struct device_operations *ops,
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unsigned int functions, struct pnp_info *info)
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{
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struct device_path path;
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struct device *dev;
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int i;
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path.type = DEVICE_PATH_PNP;
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path.pnp.port = base_dev->path.pnp.port;
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/* Setup the ops and resources on the newly allocated devices. */
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for (i = 0; i < functions; i++) {
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/* Skip logical devices this Super I/O doesn't have. */
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if (info[i].function == -1)
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continue;
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path.pnp.device = info[i].function;
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dev = alloc_find_dev(base_dev->bus, &path);
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/* Don't initialize a device multiple times. */
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if (dev->ops)
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continue;
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/* use LDN-specific ops override from corresponding pnp_info
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entry if not NULL */
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if (info[i].ops)
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dev->ops = info[i].ops;
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/* else use device ops */
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else
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dev->ops = ops;
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get_resources(dev, &info[i]);
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}
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}
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