1126 lines
30 KiB
C
1126 lines
30 KiB
C
/*
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* PCMCIA 16-bit resource management functions
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*
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* The initial developer of the original code is David A. Hinds
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* <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
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* are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
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*
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* Copyright (C) 1999 David A. Hinds
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* Copyright (C) 2004-2005 Dominik Brodowski
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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 version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include <linux/pci.h>
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#include <linux/device.h>
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#include <linux/netdevice.h>
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#include <pcmcia/cs_types.h>
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#include <pcmcia/ss.h>
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#include <pcmcia/cs.h>
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#include <pcmcia/cistpl.h>
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#include <pcmcia/cisreg.h>
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#include <pcmcia/ds.h>
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#include "cs_internal.h"
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/* Access speed for IO windows */
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static int io_speed = 0;
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module_param(io_speed, int, 0444);
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#ifdef CONFIG_PCMCIA_PROBE
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#include <asm/irq.h>
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/* mask of IRQs already reserved by other cards, we should avoid using them */
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static u8 pcmcia_used_irq[NR_IRQS];
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#endif
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/** alloc_io_space
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*
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* Special stuff for managing IO windows, because they are scarce
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*/
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static int alloc_io_space(struct pcmcia_socket *s, u_int attr,
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unsigned int *base, unsigned int num, u_int lines)
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{
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int i;
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unsigned int try, align;
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align = (*base) ? (lines ? 1<<lines : 0) : 1;
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if (align && (align < num)) {
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if (*base) {
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dev_dbg(&s->dev, "odd IO request: num %#x align %#x\n",
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num, align);
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align = 0;
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} else
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while (align && (align < num)) align <<= 1;
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}
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if (*base & ~(align-1)) {
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dev_dbg(&s->dev, "odd IO request: base %#x align %#x\n",
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*base, align);
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align = 0;
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}
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if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) {
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*base = s->io_offset | (*base & 0x0fff);
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return 0;
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}
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/* Check for an already-allocated window that must conflict with
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* what was asked for. It is a hack because it does not catch all
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* potential conflicts, just the most obvious ones.
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*/
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for (i = 0; i < MAX_IO_WIN; i++)
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if ((s->io[i].res) && *base &&
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((s->io[i].res->start & (align-1)) == *base))
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return 1;
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for (i = 0; i < MAX_IO_WIN; i++) {
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if (!s->io[i].res) {
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s->io[i].res = pcmcia_find_io_region(*base, num, align, s);
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if (s->io[i].res) {
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*base = s->io[i].res->start;
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s->io[i].res->flags = (s->io[i].res->flags & ~IORESOURCE_BITS) | (attr & IORESOURCE_BITS);
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s->io[i].InUse = num;
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break;
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} else
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return 1;
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} else if ((s->io[i].res->flags & IORESOURCE_BITS) != (attr & IORESOURCE_BITS))
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continue;
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/* Try to extend top of window */
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try = s->io[i].res->end + 1;
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if ((*base == 0) || (*base == try))
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if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start,
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s->io[i].res->end + num, s) == 0) {
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*base = try;
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s->io[i].InUse += num;
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break;
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}
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/* Try to extend bottom of window */
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try = s->io[i].res->start - num;
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if ((*base == 0) || (*base == try))
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if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num,
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s->io[i].res->end, s) == 0) {
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*base = try;
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s->io[i].InUse += num;
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break;
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}
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}
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return (i == MAX_IO_WIN);
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} /* alloc_io_space */
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static void release_io_space(struct pcmcia_socket *s, unsigned int base,
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unsigned int num)
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{
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int i;
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for (i = 0; i < MAX_IO_WIN; i++) {
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if (!s->io[i].res)
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continue;
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if ((s->io[i].res->start <= base) &&
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(s->io[i].res->end >= base+num-1)) {
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s->io[i].InUse -= num;
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/* Free the window if no one else is using it */
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if (s->io[i].InUse == 0) {
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release_resource(s->io[i].res);
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kfree(s->io[i].res);
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s->io[i].res = NULL;
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}
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}
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}
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} /* release_io_space */
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/** pccard_access_configuration_register
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*
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* Access_configuration_register() reads and writes configuration
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* registers in attribute memory. Memory window 0 is reserved for
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* this and the tuple reading services.
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*/
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int pcmcia_access_configuration_register(struct pcmcia_device *p_dev,
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conf_reg_t *reg)
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{
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struct pcmcia_socket *s;
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config_t *c;
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int addr;
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u_char val;
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if (!p_dev || !p_dev->function_config)
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return -EINVAL;
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s = p_dev->socket;
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c = p_dev->function_config;
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if (!(c->state & CONFIG_LOCKED)) {
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dev_dbg(&s->dev, "Configuration isnt't locked\n");
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return -EACCES;
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}
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addr = (c->ConfigBase + reg->Offset) >> 1;
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switch (reg->Action) {
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case CS_READ:
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pcmcia_read_cis_mem(s, 1, addr, 1, &val);
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reg->Value = val;
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break;
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case CS_WRITE:
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val = reg->Value;
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pcmcia_write_cis_mem(s, 1, addr, 1, &val);
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break;
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default:
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dev_dbg(&s->dev, "Invalid conf register request\n");
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return -EINVAL;
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break;
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}
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return 0;
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} /* pcmcia_access_configuration_register */
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EXPORT_SYMBOL(pcmcia_access_configuration_register);
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/** pcmcia_get_window
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*/
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int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle,
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int idx, win_req_t *req)
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{
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window_t *win;
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int w;
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if (!s || !(s->state & SOCKET_PRESENT))
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return -ENODEV;
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for (w = idx; w < MAX_WIN; w++)
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if (s->state & SOCKET_WIN_REQ(w))
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break;
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if (w == MAX_WIN)
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return -EINVAL;
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win = &s->win[w];
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req->Base = win->ctl.res->start;
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req->Size = win->ctl.res->end - win->ctl.res->start + 1;
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req->AccessSpeed = win->ctl.speed;
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req->Attributes = 0;
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if (win->ctl.flags & MAP_ATTRIB)
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req->Attributes |= WIN_MEMORY_TYPE_AM;
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if (win->ctl.flags & MAP_ACTIVE)
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req->Attributes |= WIN_ENABLE;
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if (win->ctl.flags & MAP_16BIT)
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req->Attributes |= WIN_DATA_WIDTH_16;
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if (win->ctl.flags & MAP_USE_WAIT)
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req->Attributes |= WIN_USE_WAIT;
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*handle = win;
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return 0;
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} /* pcmcia_get_window */
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EXPORT_SYMBOL(pcmcia_get_window);
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/** pcmcia_get_mem_page
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*
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* Change the card address of an already open memory window.
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*/
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int pcmcia_get_mem_page(window_handle_t win, memreq_t *req)
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{
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if ((win == NULL) || (win->magic != WINDOW_MAGIC))
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return -EINVAL;
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req->Page = 0;
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req->CardOffset = win->ctl.card_start;
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return 0;
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} /* pcmcia_get_mem_page */
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EXPORT_SYMBOL(pcmcia_get_mem_page);
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int pcmcia_map_mem_page(window_handle_t win, memreq_t *req)
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{
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struct pcmcia_socket *s;
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if ((win == NULL) || (win->magic != WINDOW_MAGIC))
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return -EINVAL;
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s = win->sock;
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if (req->Page != 0) {
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dev_dbg(&s->dev, "failure: requested page is zero\n");
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return -EINVAL;
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}
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win->ctl.card_start = req->CardOffset;
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if (s->ops->set_mem_map(s, &win->ctl) != 0) {
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dev_dbg(&s->dev, "failed to set_mem_map\n");
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return -EIO;
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}
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return 0;
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} /* pcmcia_map_mem_page */
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EXPORT_SYMBOL(pcmcia_map_mem_page);
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/** pcmcia_modify_configuration
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*
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* Modify a locked socket configuration
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*/
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int pcmcia_modify_configuration(struct pcmcia_device *p_dev,
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modconf_t *mod)
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{
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struct pcmcia_socket *s;
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config_t *c;
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s = p_dev->socket;
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c = p_dev->function_config;
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if (!(s->state & SOCKET_PRESENT)) {
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dev_dbg(&s->dev, "No card present\n");
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return -ENODEV;
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}
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if (!(c->state & CONFIG_LOCKED)) {
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dev_dbg(&s->dev, "Configuration isnt't locked\n");
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return -EACCES;
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}
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if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
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if (mod->Attributes & CONF_ENABLE_IRQ) {
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c->Attributes |= CONF_ENABLE_IRQ;
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s->socket.io_irq = s->irq.AssignedIRQ;
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} else {
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c->Attributes &= ~CONF_ENABLE_IRQ;
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s->socket.io_irq = 0;
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}
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s->ops->set_socket(s, &s->socket);
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}
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if (mod->Attributes & CONF_VCC_CHANGE_VALID) {
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dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n");
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return -EINVAL;
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}
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/* We only allow changing Vpp1 and Vpp2 to the same value */
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if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
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(mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
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if (mod->Vpp1 != mod->Vpp2) {
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dev_dbg(&s->dev, "Vpp1 and Vpp2 must be the same\n");
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return -EINVAL;
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}
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s->socket.Vpp = mod->Vpp1;
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if (s->ops->set_socket(s, &s->socket)) {
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dev_printk(KERN_WARNING, &s->dev,
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"Unable to set VPP\n");
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return -EIO;
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}
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} else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
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(mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
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dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n");
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return -EINVAL;
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}
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if (mod->Attributes & CONF_IO_CHANGE_WIDTH) {
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pccard_io_map io_off = { 0, 0, 0, 0, 1 };
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pccard_io_map io_on;
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int i;
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io_on.speed = io_speed;
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for (i = 0; i < MAX_IO_WIN; i++) {
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if (!s->io[i].res)
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continue;
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io_off.map = i;
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io_on.map = i;
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io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8;
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io_on.start = s->io[i].res->start;
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io_on.stop = s->io[i].res->end;
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s->ops->set_io_map(s, &io_off);
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mdelay(40);
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s->ops->set_io_map(s, &io_on);
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}
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}
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return 0;
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} /* modify_configuration */
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EXPORT_SYMBOL(pcmcia_modify_configuration);
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int pcmcia_release_configuration(struct pcmcia_device *p_dev)
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{
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pccard_io_map io = { 0, 0, 0, 0, 1 };
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struct pcmcia_socket *s = p_dev->socket;
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config_t *c = p_dev->function_config;
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int i;
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if (p_dev->_locked) {
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p_dev->_locked = 0;
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if (--(s->lock_count) == 0) {
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s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */
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s->socket.Vpp = 0;
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s->socket.io_irq = 0;
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s->ops->set_socket(s, &s->socket);
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}
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}
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if (c->state & CONFIG_LOCKED) {
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c->state &= ~CONFIG_LOCKED;
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if (c->state & CONFIG_IO_REQ)
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for (i = 0; i < MAX_IO_WIN; i++) {
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if (!s->io[i].res)
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continue;
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s->io[i].Config--;
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if (s->io[i].Config != 0)
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continue;
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io.map = i;
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s->ops->set_io_map(s, &io);
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}
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}
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return 0;
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} /* pcmcia_release_configuration */
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/** pcmcia_release_io
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*
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* Release_io() releases the I/O ranges allocated by a client. This
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* may be invoked some time after a card ejection has already dumped
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* the actual socket configuration, so if the client is "stale", we
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* don't bother checking the port ranges against the current socket
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* values.
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*/
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static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req)
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{
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struct pcmcia_socket *s = p_dev->socket;
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config_t *c = p_dev->function_config;
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if (!p_dev->_io )
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return -EINVAL;
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p_dev->_io = 0;
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if ((c->io.BasePort1 != req->BasePort1) ||
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(c->io.NumPorts1 != req->NumPorts1) ||
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(c->io.BasePort2 != req->BasePort2) ||
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(c->io.NumPorts2 != req->NumPorts2))
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return -EINVAL;
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c->state &= ~CONFIG_IO_REQ;
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release_io_space(s, req->BasePort1, req->NumPorts1);
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if (req->NumPorts2)
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release_io_space(s, req->BasePort2, req->NumPorts2);
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return 0;
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} /* pcmcia_release_io */
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|
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|
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static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
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{
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struct pcmcia_socket *s = p_dev->socket;
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config_t *c= p_dev->function_config;
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if (!p_dev->_irq)
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return -EINVAL;
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p_dev->_irq = 0;
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if (c->state & CONFIG_LOCKED)
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return -EACCES;
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if (c->irq.Attributes != req->Attributes) {
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dev_dbg(&s->dev, "IRQ attributes must match assigned ones\n");
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return -EINVAL;
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}
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if (s->irq.AssignedIRQ != req->AssignedIRQ) {
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dev_dbg(&s->dev, "IRQ must match assigned one\n");
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return -EINVAL;
|
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}
|
|
if (--s->irq.Config == 0) {
|
|
c->state &= ~CONFIG_IRQ_REQ;
|
|
s->irq.AssignedIRQ = 0;
|
|
}
|
|
|
|
if (req->Attributes & IRQ_HANDLE_PRESENT) {
|
|
free_irq(req->AssignedIRQ, req->Instance);
|
|
}
|
|
|
|
#ifdef CONFIG_PCMCIA_PROBE
|
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pcmcia_used_irq[req->AssignedIRQ]--;
|
|
#endif
|
|
|
|
return 0;
|
|
} /* pcmcia_release_irq */
|
|
|
|
|
|
int pcmcia_release_window(window_handle_t win)
|
|
{
|
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struct pcmcia_socket *s;
|
|
|
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if ((win == NULL) || (win->magic != WINDOW_MAGIC))
|
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return -EINVAL;
|
|
s = win->sock;
|
|
if (!(win->handle->_win & CLIENT_WIN_REQ(win->index))) {
|
|
dev_dbg(&s->dev, "not releasing unknown window\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Shut down memory window */
|
|
win->ctl.flags &= ~MAP_ACTIVE;
|
|
s->ops->set_mem_map(s, &win->ctl);
|
|
s->state &= ~SOCKET_WIN_REQ(win->index);
|
|
|
|
/* Release system memory */
|
|
if (win->ctl.res) {
|
|
release_resource(win->ctl.res);
|
|
kfree(win->ctl.res);
|
|
win->ctl.res = NULL;
|
|
}
|
|
win->handle->_win &= ~CLIENT_WIN_REQ(win->index);
|
|
|
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win->magic = 0;
|
|
|
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return 0;
|
|
} /* pcmcia_release_window */
|
|
EXPORT_SYMBOL(pcmcia_release_window);
|
|
|
|
|
|
int pcmcia_request_configuration(struct pcmcia_device *p_dev,
|
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config_req_t *req)
|
|
{
|
|
int i;
|
|
u_int base;
|
|
struct pcmcia_socket *s = p_dev->socket;
|
|
config_t *c;
|
|
pccard_io_map iomap;
|
|
|
|
if (!(s->state & SOCKET_PRESENT))
|
|
return -ENODEV;
|
|
|
|
if (req->IntType & INT_CARDBUS) {
|
|
dev_dbg(&s->dev, "IntType may not be INT_CARDBUS\n");
|
|
return -EINVAL;
|
|
}
|
|
c = p_dev->function_config;
|
|
if (c->state & CONFIG_LOCKED) {
|
|
dev_dbg(&s->dev, "Configuration is locked\n");
|
|
return -EACCES;
|
|
}
|
|
|
|
/* Do power control. We don't allow changes in Vcc. */
|
|
s->socket.Vpp = req->Vpp;
|
|
if (s->ops->set_socket(s, &s->socket)) {
|
|
dev_printk(KERN_WARNING, &s->dev,
|
|
"Unable to set socket state\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Pick memory or I/O card, DMA mode, interrupt */
|
|
c->IntType = req->IntType;
|
|
c->Attributes = req->Attributes;
|
|
if (req->IntType & INT_MEMORY_AND_IO)
|
|
s->socket.flags |= SS_IOCARD;
|
|
if (req->IntType & INT_ZOOMED_VIDEO)
|
|
s->socket.flags |= SS_ZVCARD | SS_IOCARD;
|
|
if (req->Attributes & CONF_ENABLE_DMA)
|
|
s->socket.flags |= SS_DMA_MODE;
|
|
if (req->Attributes & CONF_ENABLE_SPKR)
|
|
s->socket.flags |= SS_SPKR_ENA;
|
|
if (req->Attributes & CONF_ENABLE_IRQ)
|
|
s->socket.io_irq = s->irq.AssignedIRQ;
|
|
else
|
|
s->socket.io_irq = 0;
|
|
s->ops->set_socket(s, &s->socket);
|
|
s->lock_count++;
|
|
|
|
/* Set up CIS configuration registers */
|
|
base = c->ConfigBase = req->ConfigBase;
|
|
c->CardValues = req->Present;
|
|
if (req->Present & PRESENT_COPY) {
|
|
c->Copy = req->Copy;
|
|
pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
|
|
}
|
|
if (req->Present & PRESENT_OPTION) {
|
|
if (s->functions == 1) {
|
|
c->Option = req->ConfigIndex & COR_CONFIG_MASK;
|
|
} else {
|
|
c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
|
|
c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
|
|
if (req->Present & PRESENT_IOBASE_0)
|
|
c->Option |= COR_ADDR_DECODE;
|
|
}
|
|
if (c->state & CONFIG_IRQ_REQ)
|
|
if (!(c->irq.Attributes & IRQ_FORCED_PULSE))
|
|
c->Option |= COR_LEVEL_REQ;
|
|
pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
|
|
mdelay(40);
|
|
}
|
|
if (req->Present & PRESENT_STATUS) {
|
|
c->Status = req->Status;
|
|
pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
|
|
}
|
|
if (req->Present & PRESENT_PIN_REPLACE) {
|
|
c->Pin = req->Pin;
|
|
pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
|
|
}
|
|
if (req->Present & PRESENT_EXT_STATUS) {
|
|
c->ExtStatus = req->ExtStatus;
|
|
pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
|
|
}
|
|
if (req->Present & PRESENT_IOBASE_0) {
|
|
u_char b = c->io.BasePort1 & 0xff;
|
|
pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
|
|
b = (c->io.BasePort1 >> 8) & 0xff;
|
|
pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
|
|
}
|
|
if (req->Present & PRESENT_IOSIZE) {
|
|
u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
|
|
pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
|
|
}
|
|
|
|
/* Configure I/O windows */
|
|
if (c->state & CONFIG_IO_REQ) {
|
|
iomap.speed = io_speed;
|
|
for (i = 0; i < MAX_IO_WIN; i++)
|
|
if (s->io[i].res) {
|
|
iomap.map = i;
|
|
iomap.flags = MAP_ACTIVE;
|
|
switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) {
|
|
case IO_DATA_PATH_WIDTH_16:
|
|
iomap.flags |= MAP_16BIT; break;
|
|
case IO_DATA_PATH_WIDTH_AUTO:
|
|
iomap.flags |= MAP_AUTOSZ; break;
|
|
default:
|
|
break;
|
|
}
|
|
iomap.start = s->io[i].res->start;
|
|
iomap.stop = s->io[i].res->end;
|
|
s->ops->set_io_map(s, &iomap);
|
|
s->io[i].Config++;
|
|
}
|
|
}
|
|
|
|
c->state |= CONFIG_LOCKED;
|
|
p_dev->_locked = 1;
|
|
return 0;
|
|
} /* pcmcia_request_configuration */
|
|
EXPORT_SYMBOL(pcmcia_request_configuration);
|
|
|
|
|
|
/** pcmcia_request_io
|
|
*
|
|
* Request_io() reserves ranges of port addresses for a socket.
|
|
* I have not implemented range sharing or alias addressing.
|
|
*/
|
|
int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
|
|
{
|
|
struct pcmcia_socket *s = p_dev->socket;
|
|
config_t *c;
|
|
|
|
if (!(s->state & SOCKET_PRESENT)) {
|
|
dev_dbg(&s->dev, "No card present\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (!req)
|
|
return -EINVAL;
|
|
c = p_dev->function_config;
|
|
if (c->state & CONFIG_LOCKED) {
|
|
dev_dbg(&s->dev, "Configuration is locked\n");
|
|
return -EACCES;
|
|
}
|
|
if (c->state & CONFIG_IO_REQ) {
|
|
dev_dbg(&s->dev, "IO already configured\n");
|
|
return -EBUSY;
|
|
}
|
|
if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) {
|
|
dev_dbg(&s->dev, "bad attribute setting for IO region 1\n");
|
|
return -EINVAL;
|
|
}
|
|
if ((req->NumPorts2 > 0) &&
|
|
(req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) {
|
|
dev_dbg(&s->dev, "bad attribute setting for IO region 2\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
dev_dbg(&s->dev, "trying to allocate resource 1\n");
|
|
if (alloc_io_space(s, req->Attributes1, &req->BasePort1,
|
|
req->NumPorts1, req->IOAddrLines)) {
|
|
dev_dbg(&s->dev, "allocation of resource 1 failed\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
if (req->NumPorts2) {
|
|
dev_dbg(&s->dev, "trying to allocate resource 2\n");
|
|
if (alloc_io_space(s, req->Attributes2, &req->BasePort2,
|
|
req->NumPorts2, req->IOAddrLines)) {
|
|
dev_dbg(&s->dev, "allocation of resource 2 failed\n");
|
|
release_io_space(s, req->BasePort1, req->NumPorts1);
|
|
return -EBUSY;
|
|
}
|
|
}
|
|
|
|
c->io = *req;
|
|
c->state |= CONFIG_IO_REQ;
|
|
p_dev->_io = 1;
|
|
return 0;
|
|
} /* pcmcia_request_io */
|
|
EXPORT_SYMBOL(pcmcia_request_io);
|
|
|
|
|
|
/** pcmcia_request_irq
|
|
*
|
|
* Request_irq() reserves an irq for this client.
|
|
*
|
|
* Also, since Linux only reserves irq's when they are actually
|
|
* hooked, we don't guarantee that an irq will still be available
|
|
* when the configuration is locked. Now that I think about it,
|
|
* there might be a way to fix this using a dummy handler.
|
|
*/
|
|
|
|
#ifdef CONFIG_PCMCIA_PROBE
|
|
static irqreturn_t test_action(int cpl, void *dev_id)
|
|
{
|
|
return IRQ_NONE;
|
|
}
|
|
#endif
|
|
|
|
int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
|
|
{
|
|
struct pcmcia_socket *s = p_dev->socket;
|
|
config_t *c;
|
|
int ret = -EINVAL, irq = 0;
|
|
int type;
|
|
|
|
if (!(s->state & SOCKET_PRESENT)) {
|
|
dev_dbg(&s->dev, "No card present\n");
|
|
return -ENODEV;
|
|
}
|
|
c = p_dev->function_config;
|
|
if (c->state & CONFIG_LOCKED) {
|
|
dev_dbg(&s->dev, "Configuration is locked\n");
|
|
return -EACCES;
|
|
}
|
|
if (c->state & CONFIG_IRQ_REQ) {
|
|
dev_dbg(&s->dev, "IRQ already configured\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
/* Decide what type of interrupt we are registering */
|
|
type = 0;
|
|
if (s->functions > 1) /* All of this ought to be handled higher up */
|
|
type = IRQF_SHARED;
|
|
else if (req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)
|
|
type = IRQF_SHARED;
|
|
else printk(KERN_WARNING "pcmcia: Driver needs updating to support IRQ sharing.\n");
|
|
|
|
#ifdef CONFIG_PCMCIA_PROBE
|
|
|
|
#ifdef IRQ_NOAUTOEN
|
|
/* if the underlying IRQ infrastructure allows for it, only allocate
|
|
* the IRQ, but do not enable it
|
|
*/
|
|
if (!(req->Attributes & IRQ_HANDLE_PRESENT))
|
|
type |= IRQ_NOAUTOEN;
|
|
#endif /* IRQ_NOAUTOEN */
|
|
|
|
if (s->irq.AssignedIRQ != 0) {
|
|
/* If the interrupt is already assigned, it must be the same */
|
|
irq = s->irq.AssignedIRQ;
|
|
} else {
|
|
int try;
|
|
u32 mask = s->irq_mask;
|
|
void *data = &p_dev->dev.driver; /* something unique to this device */
|
|
|
|
for (try = 0; try < 64; try++) {
|
|
irq = try % 32;
|
|
|
|
/* marked as available by driver, and not blocked by userspace? */
|
|
if (!((mask >> irq) & 1))
|
|
continue;
|
|
|
|
/* avoid an IRQ which is already used by a PCMCIA card */
|
|
if ((try < 32) && pcmcia_used_irq[irq])
|
|
continue;
|
|
|
|
/* register the correct driver, if possible, of check whether
|
|
* registering a dummy handle works, i.e. if the IRQ isn't
|
|
* marked as used by the kernel resource management core */
|
|
ret = request_irq(irq,
|
|
(req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action,
|
|
type,
|
|
p_dev->devname,
|
|
(req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data);
|
|
if (!ret) {
|
|
if (!(req->Attributes & IRQ_HANDLE_PRESENT))
|
|
free_irq(irq, data);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
/* only assign PCI irq if no IRQ already assigned */
|
|
if (ret && !s->irq.AssignedIRQ) {
|
|
if (!s->pci_irq) {
|
|
dev_printk(KERN_INFO, &s->dev, "no IRQ found\n");
|
|
return ret;
|
|
}
|
|
type = IRQF_SHARED;
|
|
irq = s->pci_irq;
|
|
}
|
|
|
|
if (ret && (req->Attributes & IRQ_HANDLE_PRESENT)) {
|
|
ret = request_irq(irq, req->Handler, type,
|
|
p_dev->devname, req->Instance);
|
|
if (ret) {
|
|
dev_printk(KERN_INFO, &s->dev,
|
|
"request_irq() failed\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/* Make sure the fact the request type was overridden is passed back */
|
|
if (type == IRQF_SHARED && !(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) {
|
|
req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING;
|
|
dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: "
|
|
"request for exclusive IRQ could not be fulfilled.\n");
|
|
dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: the driver "
|
|
"needs updating to supported shared IRQ lines.\n");
|
|
}
|
|
c->irq.Attributes = req->Attributes;
|
|
s->irq.AssignedIRQ = req->AssignedIRQ = irq;
|
|
s->irq.Config++;
|
|
|
|
c->state |= CONFIG_IRQ_REQ;
|
|
p_dev->_irq = 1;
|
|
|
|
#ifdef CONFIG_PCMCIA_PROBE
|
|
pcmcia_used_irq[irq]++;
|
|
#endif
|
|
|
|
return 0;
|
|
} /* pcmcia_request_irq */
|
|
EXPORT_SYMBOL(pcmcia_request_irq);
|
|
|
|
|
|
/** pcmcia_request_window
|
|
*
|
|
* Request_window() establishes a mapping between card memory space
|
|
* and system memory space.
|
|
*/
|
|
int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_handle_t *wh)
|
|
{
|
|
struct pcmcia_socket *s = (*p_dev)->socket;
|
|
window_t *win;
|
|
u_long align;
|
|
int w;
|
|
|
|
if (!(s->state & SOCKET_PRESENT)) {
|
|
dev_dbg(&s->dev, "No card present\n");
|
|
return -ENODEV;
|
|
}
|
|
if (req->Attributes & (WIN_PAGED | WIN_SHARED)) {
|
|
dev_dbg(&s->dev, "bad attribute setting for iomem region\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Window size defaults to smallest available */
|
|
if (req->Size == 0)
|
|
req->Size = s->map_size;
|
|
align = (((s->features & SS_CAP_MEM_ALIGN) ||
|
|
(req->Attributes & WIN_STRICT_ALIGN)) ?
|
|
req->Size : s->map_size);
|
|
if (req->Size & (s->map_size-1)) {
|
|
dev_dbg(&s->dev, "invalid map size\n");
|
|
return -EINVAL;
|
|
}
|
|
if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
|
|
(req->Base & (align-1))) {
|
|
dev_dbg(&s->dev, "invalid base address\n");
|
|
return -EINVAL;
|
|
}
|
|
if (req->Base)
|
|
align = 0;
|
|
|
|
/* Allocate system memory window */
|
|
for (w = 0; w < MAX_WIN; w++)
|
|
if (!(s->state & SOCKET_WIN_REQ(w))) break;
|
|
if (w == MAX_WIN) {
|
|
dev_dbg(&s->dev, "all windows are used already\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
win = &s->win[w];
|
|
win->magic = WINDOW_MAGIC;
|
|
win->index = w;
|
|
win->handle = *p_dev;
|
|
win->sock = s;
|
|
|
|
if (!(s->features & SS_CAP_STATIC_MAP)) {
|
|
win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align,
|
|
(req->Attributes & WIN_MAP_BELOW_1MB), s);
|
|
if (!win->ctl.res) {
|
|
dev_dbg(&s->dev, "allocating mem region failed\n");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
(*p_dev)->_win |= CLIENT_WIN_REQ(w);
|
|
|
|
/* Configure the socket controller */
|
|
win->ctl.map = w+1;
|
|
win->ctl.flags = 0;
|
|
win->ctl.speed = req->AccessSpeed;
|
|
if (req->Attributes & WIN_MEMORY_TYPE)
|
|
win->ctl.flags |= MAP_ATTRIB;
|
|
if (req->Attributes & WIN_ENABLE)
|
|
win->ctl.flags |= MAP_ACTIVE;
|
|
if (req->Attributes & WIN_DATA_WIDTH_16)
|
|
win->ctl.flags |= MAP_16BIT;
|
|
if (req->Attributes & WIN_USE_WAIT)
|
|
win->ctl.flags |= MAP_USE_WAIT;
|
|
win->ctl.card_start = 0;
|
|
if (s->ops->set_mem_map(s, &win->ctl) != 0) {
|
|
dev_dbg(&s->dev, "failed to set memory mapping\n");
|
|
return -EIO;
|
|
}
|
|
s->state |= SOCKET_WIN_REQ(w);
|
|
|
|
/* Return window handle */
|
|
if (s->features & SS_CAP_STATIC_MAP) {
|
|
req->Base = win->ctl.static_start;
|
|
} else {
|
|
req->Base = win->ctl.res->start;
|
|
}
|
|
*wh = win;
|
|
|
|
return 0;
|
|
} /* pcmcia_request_window */
|
|
EXPORT_SYMBOL(pcmcia_request_window);
|
|
|
|
void pcmcia_disable_device(struct pcmcia_device *p_dev) {
|
|
pcmcia_release_configuration(p_dev);
|
|
pcmcia_release_io(p_dev, &p_dev->io);
|
|
pcmcia_release_irq(p_dev, &p_dev->irq);
|
|
if (p_dev->win)
|
|
pcmcia_release_window(p_dev->win);
|
|
}
|
|
EXPORT_SYMBOL(pcmcia_disable_device);
|
|
|
|
|
|
struct pcmcia_cfg_mem {
|
|
struct pcmcia_device *p_dev;
|
|
void *priv_data;
|
|
int (*conf_check) (struct pcmcia_device *p_dev,
|
|
cistpl_cftable_entry_t *cfg,
|
|
cistpl_cftable_entry_t *dflt,
|
|
unsigned int vcc,
|
|
void *priv_data);
|
|
cisparse_t parse;
|
|
cistpl_cftable_entry_t dflt;
|
|
};
|
|
|
|
/**
|
|
* pcmcia_do_loop_config() - internal helper for pcmcia_loop_config()
|
|
*
|
|
* pcmcia_do_loop_config() is the internal callback for the call from
|
|
* pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred
|
|
* by a struct pcmcia_cfg_mem.
|
|
*/
|
|
static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv)
|
|
{
|
|
cistpl_cftable_entry_t *cfg = &parse->cftable_entry;
|
|
struct pcmcia_cfg_mem *cfg_mem = priv;
|
|
|
|
/* default values */
|
|
cfg_mem->p_dev->conf.ConfigIndex = cfg->index;
|
|
if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
|
|
cfg_mem->dflt = *cfg;
|
|
|
|
return cfg_mem->conf_check(cfg_mem->p_dev, cfg, &cfg_mem->dflt,
|
|
cfg_mem->p_dev->socket->socket.Vcc,
|
|
cfg_mem->priv_data);
|
|
}
|
|
|
|
/**
|
|
* pcmcia_loop_config() - loop over configuration options
|
|
* @p_dev: the struct pcmcia_device which we need to loop for.
|
|
* @conf_check: function to call for each configuration option.
|
|
* It gets passed the struct pcmcia_device, the CIS data
|
|
* describing the configuration option, and private data
|
|
* being passed to pcmcia_loop_config()
|
|
* @priv_data: private data to be passed to the conf_check function.
|
|
*
|
|
* pcmcia_loop_config() loops over all configuration options, and calls
|
|
* the driver-specific conf_check() for each one, checking whether
|
|
* it is a valid one. Returns 0 on success or errorcode otherwise.
|
|
*/
|
|
int pcmcia_loop_config(struct pcmcia_device *p_dev,
|
|
int (*conf_check) (struct pcmcia_device *p_dev,
|
|
cistpl_cftable_entry_t *cfg,
|
|
cistpl_cftable_entry_t *dflt,
|
|
unsigned int vcc,
|
|
void *priv_data),
|
|
void *priv_data)
|
|
{
|
|
struct pcmcia_cfg_mem *cfg_mem;
|
|
int ret;
|
|
|
|
cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL);
|
|
if (cfg_mem == NULL)
|
|
return -ENOMEM;
|
|
|
|
cfg_mem->p_dev = p_dev;
|
|
cfg_mem->conf_check = conf_check;
|
|
cfg_mem->priv_data = priv_data;
|
|
|
|
ret = pccard_loop_tuple(p_dev->socket, p_dev->func,
|
|
CISTPL_CFTABLE_ENTRY, &cfg_mem->parse,
|
|
cfg_mem, pcmcia_do_loop_config);
|
|
|
|
kfree(cfg_mem);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(pcmcia_loop_config);
|
|
|
|
|
|
struct pcmcia_loop_mem {
|
|
struct pcmcia_device *p_dev;
|
|
void *priv_data;
|
|
int (*loop_tuple) (struct pcmcia_device *p_dev,
|
|
tuple_t *tuple,
|
|
void *priv_data);
|
|
};
|
|
|
|
/**
|
|
* pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config()
|
|
*
|
|
* pcmcia_do_loop_tuple() is the internal callback for the call from
|
|
* pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred
|
|
* by a struct pcmcia_cfg_mem.
|
|
*/
|
|
static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv)
|
|
{
|
|
struct pcmcia_loop_mem *loop = priv;
|
|
|
|
return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data);
|
|
};
|
|
|
|
/**
|
|
* pcmcia_loop_tuple() - loop over tuples in the CIS
|
|
* @p_dev: the struct pcmcia_device which we need to loop for.
|
|
* @code: which CIS code shall we look for?
|
|
* @priv_data: private data to be passed to the loop_tuple function.
|
|
* @loop_tuple: function to call for each CIS entry of type @function. IT
|
|
* gets passed the raw tuple and @priv_data.
|
|
*
|
|
* pcmcia_loop_tuple() loops over all CIS entries of type @function, and
|
|
* calls the @loop_tuple function for each entry. If the call to @loop_tuple
|
|
* returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
|
|
*/
|
|
int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
|
|
int (*loop_tuple) (struct pcmcia_device *p_dev,
|
|
tuple_t *tuple,
|
|
void *priv_data),
|
|
void *priv_data)
|
|
{
|
|
struct pcmcia_loop_mem loop = {
|
|
.p_dev = p_dev,
|
|
.loop_tuple = loop_tuple,
|
|
.priv_data = priv_data};
|
|
|
|
return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL,
|
|
&loop, pcmcia_do_loop_tuple);
|
|
};
|
|
EXPORT_SYMBOL(pcmcia_loop_tuple);
|
|
|
|
|
|
struct pcmcia_loop_get {
|
|
size_t len;
|
|
cisdata_t **buf;
|
|
};
|
|
|
|
/**
|
|
* pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple()
|
|
*
|
|
* pcmcia_do_get_tuple() is the internal callback for the call from
|
|
* pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in
|
|
* the first tuple, return 0 unconditionally. Create a memory buffer large
|
|
* enough to hold the content of the tuple, and fill it with the tuple data.
|
|
* The caller is responsible to free the buffer.
|
|
*/
|
|
static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple,
|
|
void *priv)
|
|
{
|
|
struct pcmcia_loop_get *get = priv;
|
|
|
|
*get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL);
|
|
if (*get->buf) {
|
|
get->len = tuple->TupleDataLen;
|
|
memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen);
|
|
} else
|
|
dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n");
|
|
return 0;
|
|
};
|
|
|
|
/**
|
|
* pcmcia_get_tuple() - get first tuple from CIS
|
|
* @p_dev: the struct pcmcia_device which we need to loop for.
|
|
* @code: which CIS code shall we look for?
|
|
* @buf: pointer to store the buffer to.
|
|
*
|
|
* pcmcia_get_tuple() gets the content of the first CIS entry of type @code.
|
|
* It returns the buffer length (or zero). The caller is responsible to free
|
|
* the buffer passed in @buf.
|
|
*/
|
|
size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
|
|
unsigned char **buf)
|
|
{
|
|
struct pcmcia_loop_get get = {
|
|
.len = 0,
|
|
.buf = buf,
|
|
};
|
|
|
|
*get.buf = NULL;
|
|
pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get);
|
|
|
|
return get.len;
|
|
};
|
|
EXPORT_SYMBOL(pcmcia_get_tuple);
|
|
|
|
|
|
/**
|
|
* pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis()
|
|
*
|
|
* pcmcia_do_get_mac() is the internal callback for the call from
|
|
* pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the
|
|
* tuple contains a proper LAN_NODE_ID of length 6, and copy the data
|
|
* to struct net_device->dev_addr[i].
|
|
*/
|
|
static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple,
|
|
void *priv)
|
|
{
|
|
struct net_device *dev = priv;
|
|
int i;
|
|
|
|
if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID)
|
|
return -EINVAL;
|
|
if (tuple->TupleDataLen < ETH_ALEN + 2) {
|
|
dev_warn(&p_dev->dev, "Invalid CIS tuple length for "
|
|
"LAN_NODE_ID\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (tuple->TupleData[1] != ETH_ALEN) {
|
|
dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n");
|
|
return -EINVAL;
|
|
}
|
|
for (i = 0; i < 6; i++)
|
|
dev->dev_addr[i] = tuple->TupleData[i+2];
|
|
return 0;
|
|
};
|
|
|
|
/**
|
|
* pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE
|
|
* @p_dev: the struct pcmcia_device for which we want the address.
|
|
* @dev: a properly prepared struct net_device to store the info to.
|
|
*
|
|
* pcmcia_get_mac_from_cis() reads out the hardware MAC address from
|
|
* CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which
|
|
* must be set up properly by the driver (see examples!).
|
|
*/
|
|
int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev)
|
|
{
|
|
return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev);
|
|
};
|
|
EXPORT_SYMBOL(pcmcia_get_mac_from_cis);
|
|
|