![Rusty Russell](/assets/img/avatar_default.png)
module_param(bool) used to counter-intuitively take an int. In
fddd5201
(mid-2009) we allowed bool or int/unsigned int using a messy
trick.
It's time to remove the int/unsigned int option. For this version
it'll simply give a warning, but it'll break next kernel version.
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2063 lines
51 KiB
C
2063 lines
51 KiB
C
/*
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* A framebuffer driver for VBE 2.0+ compliant video cards
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*
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* (c) 2007 Michal Januszewski <spock@gentoo.org>
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* Loosely based upon the vesafb driver.
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*
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/skbuff.h>
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#include <linux/timer.h>
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#include <linux/completion.h>
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#include <linux/connector.h>
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#include <linux/random.h>
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#include <linux/platform_device.h>
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#include <linux/limits.h>
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#include <linux/fb.h>
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#include <linux/io.h>
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#include <linux/mutex.h>
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#include <linux/slab.h>
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#include <video/edid.h>
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#include <video/uvesafb.h>
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#ifdef CONFIG_X86
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#include <video/vga.h>
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#endif
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#ifdef CONFIG_MTRR
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#include <asm/mtrr.h>
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#endif
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#include "edid.h"
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static struct cb_id uvesafb_cn_id = {
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.idx = CN_IDX_V86D,
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.val = CN_VAL_V86D_UVESAFB
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};
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static char v86d_path[PATH_MAX] = "/sbin/v86d";
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static char v86d_started; /* has v86d been started by uvesafb? */
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static struct fb_fix_screeninfo uvesafb_fix __devinitdata = {
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.id = "VESA VGA",
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.type = FB_TYPE_PACKED_PIXELS,
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.accel = FB_ACCEL_NONE,
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.visual = FB_VISUAL_TRUECOLOR,
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};
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static int mtrr __devinitdata = 3; /* enable mtrr by default */
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static bool blank = 1; /* enable blanking by default */
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static int ypan = 1; /* 0: scroll, 1: ypan, 2: ywrap */
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static bool pmi_setpal __devinitdata = true; /* use PMI for palette changes */
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static bool nocrtc __devinitdata; /* ignore CRTC settings */
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static bool noedid __devinitdata; /* don't try DDC transfers */
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static int vram_remap __devinitdata; /* set amt. of memory to be used */
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static int vram_total __devinitdata; /* set total amount of memory */
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static u16 maxclk __devinitdata; /* maximum pixel clock */
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static u16 maxvf __devinitdata; /* maximum vertical frequency */
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static u16 maxhf __devinitdata; /* maximum horizontal frequency */
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static u16 vbemode __devinitdata; /* force use of a specific VBE mode */
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static char *mode_option __devinitdata;
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static u8 dac_width = 6;
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static struct uvesafb_ktask *uvfb_tasks[UVESAFB_TASKS_MAX];
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static DEFINE_MUTEX(uvfb_lock);
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/*
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* A handler for replies from userspace.
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*
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* Make sure each message passes consistency checks and if it does,
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* find the kernel part of the task struct, copy the registers and
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* the buffer contents and then complete the task.
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*/
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static void uvesafb_cn_callback(struct cn_msg *msg, struct netlink_skb_parms *nsp)
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{
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struct uvesafb_task *utask;
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struct uvesafb_ktask *task;
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if (!cap_raised(current_cap(), CAP_SYS_ADMIN))
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return;
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if (msg->seq >= UVESAFB_TASKS_MAX)
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return;
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mutex_lock(&uvfb_lock);
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task = uvfb_tasks[msg->seq];
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if (!task || msg->ack != task->ack) {
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mutex_unlock(&uvfb_lock);
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return;
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}
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utask = (struct uvesafb_task *)msg->data;
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/* Sanity checks for the buffer length. */
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if (task->t.buf_len < utask->buf_len ||
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utask->buf_len > msg->len - sizeof(*utask)) {
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mutex_unlock(&uvfb_lock);
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return;
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}
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uvfb_tasks[msg->seq] = NULL;
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mutex_unlock(&uvfb_lock);
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memcpy(&task->t, utask, sizeof(*utask));
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if (task->t.buf_len && task->buf)
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memcpy(task->buf, utask + 1, task->t.buf_len);
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complete(task->done);
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return;
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}
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static int uvesafb_helper_start(void)
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{
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char *envp[] = {
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"HOME=/",
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"PATH=/sbin:/bin",
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NULL,
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};
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char *argv[] = {
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v86d_path,
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NULL,
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};
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return call_usermodehelper(v86d_path, argv, envp, 1);
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}
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/*
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* Execute a uvesafb task.
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*
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* Returns 0 if the task is executed successfully.
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*
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* A message sent to the userspace consists of the uvesafb_task
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* struct and (optionally) a buffer. The uvesafb_task struct is
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* a simplified version of uvesafb_ktask (its kernel counterpart)
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* containing only the register values, flags and the length of
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* the buffer.
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*
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* Each message is assigned a sequence number (increased linearly)
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* and a random ack number. The sequence number is used as a key
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* for the uvfb_tasks array which holds pointers to uvesafb_ktask
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* structs for all requests.
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*/
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static int uvesafb_exec(struct uvesafb_ktask *task)
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{
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static int seq;
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struct cn_msg *m;
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int err;
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int len = sizeof(task->t) + task->t.buf_len;
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/*
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* Check whether the message isn't longer than the maximum
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* allowed by connector.
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*/
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if (sizeof(*m) + len > CONNECTOR_MAX_MSG_SIZE) {
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printk(KERN_WARNING "uvesafb: message too long (%d), "
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"can't execute task\n", (int)(sizeof(*m) + len));
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return -E2BIG;
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}
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m = kzalloc(sizeof(*m) + len, GFP_KERNEL);
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if (!m)
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return -ENOMEM;
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init_completion(task->done);
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memcpy(&m->id, &uvesafb_cn_id, sizeof(m->id));
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m->seq = seq;
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m->len = len;
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m->ack = random32();
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/* uvesafb_task structure */
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memcpy(m + 1, &task->t, sizeof(task->t));
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/* Buffer */
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memcpy((u8 *)(m + 1) + sizeof(task->t), task->buf, task->t.buf_len);
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/*
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* Save the message ack number so that we can find the kernel
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* part of this task when a reply is received from userspace.
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*/
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task->ack = m->ack;
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mutex_lock(&uvfb_lock);
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/* If all slots are taken -- bail out. */
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if (uvfb_tasks[seq]) {
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mutex_unlock(&uvfb_lock);
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err = -EBUSY;
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goto out;
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}
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/* Save a pointer to the kernel part of the task struct. */
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uvfb_tasks[seq] = task;
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mutex_unlock(&uvfb_lock);
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err = cn_netlink_send(m, 0, GFP_KERNEL);
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if (err == -ESRCH) {
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/*
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* Try to start the userspace helper if sending
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* the request failed the first time.
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*/
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err = uvesafb_helper_start();
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if (err) {
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printk(KERN_ERR "uvesafb: failed to execute %s\n",
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v86d_path);
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printk(KERN_ERR "uvesafb: make sure that the v86d "
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"helper is installed and executable\n");
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} else {
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v86d_started = 1;
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err = cn_netlink_send(m, 0, gfp_any());
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if (err == -ENOBUFS)
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err = 0;
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}
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} else if (err == -ENOBUFS)
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err = 0;
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if (!err && !(task->t.flags & TF_EXIT))
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err = !wait_for_completion_timeout(task->done,
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msecs_to_jiffies(UVESAFB_TIMEOUT));
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mutex_lock(&uvfb_lock);
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uvfb_tasks[seq] = NULL;
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mutex_unlock(&uvfb_lock);
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seq++;
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if (seq >= UVESAFB_TASKS_MAX)
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seq = 0;
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out:
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kfree(m);
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return err;
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}
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/*
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* Free a uvesafb_ktask struct.
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*/
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static void uvesafb_free(struct uvesafb_ktask *task)
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{
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if (task) {
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if (task->done)
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kfree(task->done);
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kfree(task);
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}
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}
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/*
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* Prepare a uvesafb_ktask struct to be used again.
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*/
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static void uvesafb_reset(struct uvesafb_ktask *task)
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{
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struct completion *cpl = task->done;
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memset(task, 0, sizeof(*task));
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task->done = cpl;
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}
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/*
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* Allocate and prepare a uvesafb_ktask struct.
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*/
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static struct uvesafb_ktask *uvesafb_prep(void)
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{
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struct uvesafb_ktask *task;
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task = kzalloc(sizeof(*task), GFP_KERNEL);
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if (task) {
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task->done = kzalloc(sizeof(*task->done), GFP_KERNEL);
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if (!task->done) {
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kfree(task);
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task = NULL;
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}
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}
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return task;
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}
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static void uvesafb_setup_var(struct fb_var_screeninfo *var,
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struct fb_info *info, struct vbe_mode_ib *mode)
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{
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struct uvesafb_par *par = info->par;
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var->vmode = FB_VMODE_NONINTERLACED;
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var->sync = FB_SYNC_VERT_HIGH_ACT;
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var->xres = mode->x_res;
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var->yres = mode->y_res;
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var->xres_virtual = mode->x_res;
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var->yres_virtual = (par->ypan) ?
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info->fix.smem_len / mode->bytes_per_scan_line :
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mode->y_res;
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var->xoffset = 0;
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var->yoffset = 0;
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var->bits_per_pixel = mode->bits_per_pixel;
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if (var->bits_per_pixel == 15)
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var->bits_per_pixel = 16;
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if (var->bits_per_pixel > 8) {
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var->red.offset = mode->red_off;
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var->red.length = mode->red_len;
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var->green.offset = mode->green_off;
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var->green.length = mode->green_len;
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var->blue.offset = mode->blue_off;
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var->blue.length = mode->blue_len;
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var->transp.offset = mode->rsvd_off;
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var->transp.length = mode->rsvd_len;
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} else {
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var->red.offset = 0;
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var->green.offset = 0;
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var->blue.offset = 0;
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var->transp.offset = 0;
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var->red.length = 8;
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var->green.length = 8;
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var->blue.length = 8;
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var->transp.length = 0;
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}
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}
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static int uvesafb_vbe_find_mode(struct uvesafb_par *par,
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int xres, int yres, int depth, unsigned char flags)
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{
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int i, match = -1, h = 0, d = 0x7fffffff;
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for (i = 0; i < par->vbe_modes_cnt; i++) {
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h = abs(par->vbe_modes[i].x_res - xres) +
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abs(par->vbe_modes[i].y_res - yres) +
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abs(depth - par->vbe_modes[i].depth);
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/*
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* We have an exact match in terms of resolution
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* and depth.
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*/
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if (h == 0)
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return i;
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if (h < d || (h == d && par->vbe_modes[i].depth > depth)) {
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d = h;
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match = i;
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}
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}
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i = 1;
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if (flags & UVESAFB_EXACT_DEPTH &&
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par->vbe_modes[match].depth != depth)
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i = 0;
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if (flags & UVESAFB_EXACT_RES && d > 24)
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i = 0;
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if (i != 0)
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return match;
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else
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return -1;
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}
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static u8 *uvesafb_vbe_state_save(struct uvesafb_par *par)
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{
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struct uvesafb_ktask *task;
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u8 *state;
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int err;
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if (!par->vbe_state_size)
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return NULL;
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state = kmalloc(par->vbe_state_size, GFP_KERNEL);
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if (!state)
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return NULL;
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task = uvesafb_prep();
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if (!task) {
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kfree(state);
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return NULL;
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}
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task->t.regs.eax = 0x4f04;
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task->t.regs.ecx = 0x000f;
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task->t.regs.edx = 0x0001;
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task->t.flags = TF_BUF_RET | TF_BUF_ESBX;
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task->t.buf_len = par->vbe_state_size;
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task->buf = state;
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err = uvesafb_exec(task);
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if (err || (task->t.regs.eax & 0xffff) != 0x004f) {
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printk(KERN_WARNING "uvesafb: VBE get state call "
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"failed (eax=0x%x, err=%d)\n",
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task->t.regs.eax, err);
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kfree(state);
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state = NULL;
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}
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uvesafb_free(task);
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return state;
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}
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static void uvesafb_vbe_state_restore(struct uvesafb_par *par, u8 *state_buf)
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{
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struct uvesafb_ktask *task;
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int err;
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if (!state_buf)
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return;
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task = uvesafb_prep();
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if (!task)
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return;
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task->t.regs.eax = 0x4f04;
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task->t.regs.ecx = 0x000f;
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task->t.regs.edx = 0x0002;
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task->t.buf_len = par->vbe_state_size;
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task->t.flags = TF_BUF_ESBX;
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task->buf = state_buf;
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err = uvesafb_exec(task);
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if (err || (task->t.regs.eax & 0xffff) != 0x004f)
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printk(KERN_WARNING "uvesafb: VBE state restore call "
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"failed (eax=0x%x, err=%d)\n",
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task->t.regs.eax, err);
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uvesafb_free(task);
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}
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static int __devinit uvesafb_vbe_getinfo(struct uvesafb_ktask *task,
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struct uvesafb_par *par)
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{
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int err;
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task->t.regs.eax = 0x4f00;
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task->t.flags = TF_VBEIB;
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task->t.buf_len = sizeof(struct vbe_ib);
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task->buf = &par->vbe_ib;
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strncpy(par->vbe_ib.vbe_signature, "VBE2", 4);
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err = uvesafb_exec(task);
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if (err || (task->t.regs.eax & 0xffff) != 0x004f) {
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printk(KERN_ERR "uvesafb: Getting VBE info block failed "
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"(eax=0x%x, err=%d)\n", (u32)task->t.regs.eax,
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err);
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return -EINVAL;
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}
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if (par->vbe_ib.vbe_version < 0x0200) {
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printk(KERN_ERR "uvesafb: Sorry, pre-VBE 2.0 cards are "
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"not supported.\n");
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return -EINVAL;
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}
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|
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if (!par->vbe_ib.mode_list_ptr) {
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printk(KERN_ERR "uvesafb: Missing mode list!\n");
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return -EINVAL;
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}
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|
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printk(KERN_INFO "uvesafb: ");
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|
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/*
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* Convert string pointers and the mode list pointer into
|
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* usable addresses. Print informational messages about the
|
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* video adapter and its vendor.
|
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*/
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if (par->vbe_ib.oem_vendor_name_ptr)
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printk("%s, ",
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((char *)task->buf) + par->vbe_ib.oem_vendor_name_ptr);
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if (par->vbe_ib.oem_product_name_ptr)
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printk("%s, ",
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((char *)task->buf) + par->vbe_ib.oem_product_name_ptr);
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if (par->vbe_ib.oem_product_rev_ptr)
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printk("%s, ",
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((char *)task->buf) + par->vbe_ib.oem_product_rev_ptr);
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if (par->vbe_ib.oem_string_ptr)
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printk("OEM: %s, ",
|
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((char *)task->buf) + par->vbe_ib.oem_string_ptr);
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|
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printk("VBE v%d.%d\n", ((par->vbe_ib.vbe_version & 0xff00) >> 8),
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par->vbe_ib.vbe_version & 0xff);
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return 0;
|
|
}
|
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|
|
static int __devinit uvesafb_vbe_getmodes(struct uvesafb_ktask *task,
|
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struct uvesafb_par *par)
|
|
{
|
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int off = 0, err;
|
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u16 *mode;
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|
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par->vbe_modes_cnt = 0;
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|
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/* Count available modes. */
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mode = (u16 *) (((u8 *)&par->vbe_ib) + par->vbe_ib.mode_list_ptr);
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while (*mode != 0xffff) {
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par->vbe_modes_cnt++;
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mode++;
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}
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|
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par->vbe_modes = kzalloc(sizeof(struct vbe_mode_ib) *
|
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par->vbe_modes_cnt, GFP_KERNEL);
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if (!par->vbe_modes)
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return -ENOMEM;
|
|
|
|
/* Get info about all available modes. */
|
|
mode = (u16 *) (((u8 *)&par->vbe_ib) + par->vbe_ib.mode_list_ptr);
|
|
while (*mode != 0xffff) {
|
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struct vbe_mode_ib *mib;
|
|
|
|
uvesafb_reset(task);
|
|
task->t.regs.eax = 0x4f01;
|
|
task->t.regs.ecx = (u32) *mode;
|
|
task->t.flags = TF_BUF_RET | TF_BUF_ESDI;
|
|
task->t.buf_len = sizeof(struct vbe_mode_ib);
|
|
task->buf = par->vbe_modes + off;
|
|
|
|
err = uvesafb_exec(task);
|
|
if (err || (task->t.regs.eax & 0xffff) != 0x004f) {
|
|
printk(KERN_WARNING "uvesafb: Getting mode info block "
|
|
"for mode 0x%x failed (eax=0x%x, err=%d)\n",
|
|
*mode, (u32)task->t.regs.eax, err);
|
|
mode++;
|
|
par->vbe_modes_cnt--;
|
|
continue;
|
|
}
|
|
|
|
mib = task->buf;
|
|
mib->mode_id = *mode;
|
|
|
|
/*
|
|
* We only want modes that are supported with the current
|
|
* hardware configuration, color, graphics and that have
|
|
* support for the LFB.
|
|
*/
|
|
if ((mib->mode_attr & VBE_MODE_MASK) == VBE_MODE_MASK &&
|
|
mib->bits_per_pixel >= 8)
|
|
off++;
|
|
else
|
|
par->vbe_modes_cnt--;
|
|
|
|
mode++;
|
|
mib->depth = mib->red_len + mib->green_len + mib->blue_len;
|
|
|
|
/*
|
|
* Handle 8bpp modes and modes with broken color component
|
|
* lengths.
|
|
*/
|
|
if (mib->depth == 0 || (mib->depth == 24 &&
|
|
mib->bits_per_pixel == 32))
|
|
mib->depth = mib->bits_per_pixel;
|
|
}
|
|
|
|
if (par->vbe_modes_cnt > 0)
|
|
return 0;
|
|
else
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* The Protected Mode Interface is 32-bit x86 code, so we only run it on
|
|
* x86 and not x86_64.
|
|
*/
|
|
#ifdef CONFIG_X86_32
|
|
static int __devinit uvesafb_vbe_getpmi(struct uvesafb_ktask *task,
|
|
struct uvesafb_par *par)
|
|
{
|
|
int i, err;
|
|
|
|
uvesafb_reset(task);
|
|
task->t.regs.eax = 0x4f0a;
|
|
task->t.regs.ebx = 0x0;
|
|
err = uvesafb_exec(task);
|
|
|
|
if ((task->t.regs.eax & 0xffff) != 0x4f || task->t.regs.es < 0xc000) {
|
|
par->pmi_setpal = par->ypan = 0;
|
|
} else {
|
|
par->pmi_base = (u16 *)phys_to_virt(((u32)task->t.regs.es << 4)
|
|
+ task->t.regs.edi);
|
|
par->pmi_start = (u8 *)par->pmi_base + par->pmi_base[1];
|
|
par->pmi_pal = (u8 *)par->pmi_base + par->pmi_base[2];
|
|
printk(KERN_INFO "uvesafb: protected mode interface info at "
|
|
"%04x:%04x\n",
|
|
(u16)task->t.regs.es, (u16)task->t.regs.edi);
|
|
printk(KERN_INFO "uvesafb: pmi: set display start = %p, "
|
|
"set palette = %p\n", par->pmi_start,
|
|
par->pmi_pal);
|
|
|
|
if (par->pmi_base[3]) {
|
|
printk(KERN_INFO "uvesafb: pmi: ports = ");
|
|
for (i = par->pmi_base[3]/2;
|
|
par->pmi_base[i] != 0xffff; i++)
|
|
printk("%x ", par->pmi_base[i]);
|
|
printk("\n");
|
|
|
|
if (par->pmi_base[i] != 0xffff) {
|
|
printk(KERN_INFO "uvesafb: can't handle memory"
|
|
" requests, pmi disabled\n");
|
|
par->ypan = par->pmi_setpal = 0;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_X86_32 */
|
|
|
|
/*
|
|
* Check whether a video mode is supported by the Video BIOS and is
|
|
* compatible with the monitor limits.
|
|
*/
|
|
static int __devinit uvesafb_is_valid_mode(struct fb_videomode *mode,
|
|
struct fb_info *info)
|
|
{
|
|
if (info->monspecs.gtf) {
|
|
fb_videomode_to_var(&info->var, mode);
|
|
if (fb_validate_mode(&info->var, info))
|
|
return 0;
|
|
}
|
|
|
|
if (uvesafb_vbe_find_mode(info->par, mode->xres, mode->yres, 8,
|
|
UVESAFB_EXACT_RES) == -1)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int __devinit uvesafb_vbe_getedid(struct uvesafb_ktask *task,
|
|
struct fb_info *info)
|
|
{
|
|
struct uvesafb_par *par = info->par;
|
|
int err = 0;
|
|
|
|
if (noedid || par->vbe_ib.vbe_version < 0x0300)
|
|
return -EINVAL;
|
|
|
|
task->t.regs.eax = 0x4f15;
|
|
task->t.regs.ebx = 0;
|
|
task->t.regs.ecx = 0;
|
|
task->t.buf_len = 0;
|
|
task->t.flags = 0;
|
|
|
|
err = uvesafb_exec(task);
|
|
|
|
if ((task->t.regs.eax & 0xffff) != 0x004f || err)
|
|
return -EINVAL;
|
|
|
|
if ((task->t.regs.ebx & 0x3) == 3) {
|
|
printk(KERN_INFO "uvesafb: VBIOS/hardware supports both "
|
|
"DDC1 and DDC2 transfers\n");
|
|
} else if ((task->t.regs.ebx & 0x3) == 2) {
|
|
printk(KERN_INFO "uvesafb: VBIOS/hardware supports DDC2 "
|
|
"transfers\n");
|
|
} else if ((task->t.regs.ebx & 0x3) == 1) {
|
|
printk(KERN_INFO "uvesafb: VBIOS/hardware supports DDC1 "
|
|
"transfers\n");
|
|
} else {
|
|
printk(KERN_INFO "uvesafb: VBIOS/hardware doesn't support "
|
|
"DDC transfers\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
task->t.regs.eax = 0x4f15;
|
|
task->t.regs.ebx = 1;
|
|
task->t.regs.ecx = task->t.regs.edx = 0;
|
|
task->t.flags = TF_BUF_RET | TF_BUF_ESDI;
|
|
task->t.buf_len = EDID_LENGTH;
|
|
task->buf = kzalloc(EDID_LENGTH, GFP_KERNEL);
|
|
|
|
err = uvesafb_exec(task);
|
|
|
|
if ((task->t.regs.eax & 0xffff) == 0x004f && !err) {
|
|
fb_edid_to_monspecs(task->buf, &info->monspecs);
|
|
|
|
if (info->monspecs.vfmax && info->monspecs.hfmax) {
|
|
/*
|
|
* If the maximum pixel clock wasn't specified in
|
|
* the EDID block, set it to 300 MHz.
|
|
*/
|
|
if (info->monspecs.dclkmax == 0)
|
|
info->monspecs.dclkmax = 300 * 1000000;
|
|
info->monspecs.gtf = 1;
|
|
}
|
|
} else {
|
|
err = -EINVAL;
|
|
}
|
|
|
|
kfree(task->buf);
|
|
return err;
|
|
}
|
|
|
|
static void __devinit uvesafb_vbe_getmonspecs(struct uvesafb_ktask *task,
|
|
struct fb_info *info)
|
|
{
|
|
struct uvesafb_par *par = info->par;
|
|
int i;
|
|
|
|
memset(&info->monspecs, 0, sizeof(info->monspecs));
|
|
|
|
/*
|
|
* If we don't get all necessary data from the EDID block,
|
|
* mark it as incompatible with the GTF and set nocrtc so
|
|
* that we always use the default BIOS refresh rate.
|
|
*/
|
|
if (uvesafb_vbe_getedid(task, info)) {
|
|
info->monspecs.gtf = 0;
|
|
par->nocrtc = 1;
|
|
}
|
|
|
|
/* Kernel command line overrides. */
|
|
if (maxclk)
|
|
info->monspecs.dclkmax = maxclk * 1000000;
|
|
if (maxvf)
|
|
info->monspecs.vfmax = maxvf;
|
|
if (maxhf)
|
|
info->monspecs.hfmax = maxhf * 1000;
|
|
|
|
/*
|
|
* In case DDC transfers are not supported, the user can provide
|
|
* monitor limits manually. Lower limits are set to "safe" values.
|
|
*/
|
|
if (info->monspecs.gtf == 0 && maxclk && maxvf && maxhf) {
|
|
info->monspecs.dclkmin = 0;
|
|
info->monspecs.vfmin = 60;
|
|
info->monspecs.hfmin = 29000;
|
|
info->monspecs.gtf = 1;
|
|
par->nocrtc = 0;
|
|
}
|
|
|
|
if (info->monspecs.gtf)
|
|
printk(KERN_INFO
|
|
"uvesafb: monitor limits: vf = %d Hz, hf = %d kHz, "
|
|
"clk = %d MHz\n", info->monspecs.vfmax,
|
|
(int)(info->monspecs.hfmax / 1000),
|
|
(int)(info->monspecs.dclkmax / 1000000));
|
|
else
|
|
printk(KERN_INFO "uvesafb: no monitor limits have been set, "
|
|
"default refresh rate will be used\n");
|
|
|
|
/* Add VBE modes to the modelist. */
|
|
for (i = 0; i < par->vbe_modes_cnt; i++) {
|
|
struct fb_var_screeninfo var;
|
|
struct vbe_mode_ib *mode;
|
|
struct fb_videomode vmode;
|
|
|
|
mode = &par->vbe_modes[i];
|
|
memset(&var, 0, sizeof(var));
|
|
|
|
var.xres = mode->x_res;
|
|
var.yres = mode->y_res;
|
|
|
|
fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, &var, info);
|
|
fb_var_to_videomode(&vmode, &var);
|
|
fb_add_videomode(&vmode, &info->modelist);
|
|
}
|
|
|
|
/* Add valid VESA modes to our modelist. */
|
|
for (i = 0; i < VESA_MODEDB_SIZE; i++) {
|
|
if (uvesafb_is_valid_mode((struct fb_videomode *)
|
|
&vesa_modes[i], info))
|
|
fb_add_videomode(&vesa_modes[i], &info->modelist);
|
|
}
|
|
|
|
for (i = 0; i < info->monspecs.modedb_len; i++) {
|
|
if (uvesafb_is_valid_mode(&info->monspecs.modedb[i], info))
|
|
fb_add_videomode(&info->monspecs.modedb[i],
|
|
&info->modelist);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
static void __devinit uvesafb_vbe_getstatesize(struct uvesafb_ktask *task,
|
|
struct uvesafb_par *par)
|
|
{
|
|
int err;
|
|
|
|
uvesafb_reset(task);
|
|
|
|
/*
|
|
* Get the VBE state buffer size. We want all available
|
|
* hardware state data (CL = 0x0f).
|
|
*/
|
|
task->t.regs.eax = 0x4f04;
|
|
task->t.regs.ecx = 0x000f;
|
|
task->t.regs.edx = 0x0000;
|
|
task->t.flags = 0;
|
|
|
|
err = uvesafb_exec(task);
|
|
|
|
if (err || (task->t.regs.eax & 0xffff) != 0x004f) {
|
|
printk(KERN_WARNING "uvesafb: VBE state buffer size "
|
|
"cannot be determined (eax=0x%x, err=%d)\n",
|
|
task->t.regs.eax, err);
|
|
par->vbe_state_size = 0;
|
|
return;
|
|
}
|
|
|
|
par->vbe_state_size = 64 * (task->t.regs.ebx & 0xffff);
|
|
}
|
|
|
|
static int __devinit uvesafb_vbe_init(struct fb_info *info)
|
|
{
|
|
struct uvesafb_ktask *task = NULL;
|
|
struct uvesafb_par *par = info->par;
|
|
int err;
|
|
|
|
task = uvesafb_prep();
|
|
if (!task)
|
|
return -ENOMEM;
|
|
|
|
err = uvesafb_vbe_getinfo(task, par);
|
|
if (err)
|
|
goto out;
|
|
|
|
err = uvesafb_vbe_getmodes(task, par);
|
|
if (err)
|
|
goto out;
|
|
|
|
par->nocrtc = nocrtc;
|
|
#ifdef CONFIG_X86_32
|
|
par->pmi_setpal = pmi_setpal;
|
|
par->ypan = ypan;
|
|
|
|
if (par->pmi_setpal || par->ypan)
|
|
uvesafb_vbe_getpmi(task, par);
|
|
#else
|
|
/* The protected mode interface is not available on non-x86. */
|
|
par->pmi_setpal = par->ypan = 0;
|
|
#endif
|
|
|
|
INIT_LIST_HEAD(&info->modelist);
|
|
uvesafb_vbe_getmonspecs(task, info);
|
|
uvesafb_vbe_getstatesize(task, par);
|
|
|
|
out: uvesafb_free(task);
|
|
return err;
|
|
}
|
|
|
|
static int __devinit uvesafb_vbe_init_mode(struct fb_info *info)
|
|
{
|
|
struct list_head *pos;
|
|
struct fb_modelist *modelist;
|
|
struct fb_videomode *mode;
|
|
struct uvesafb_par *par = info->par;
|
|
int i, modeid;
|
|
|
|
/* Has the user requested a specific VESA mode? */
|
|
if (vbemode) {
|
|
for (i = 0; i < par->vbe_modes_cnt; i++) {
|
|
if (par->vbe_modes[i].mode_id == vbemode) {
|
|
modeid = i;
|
|
uvesafb_setup_var(&info->var, info,
|
|
&par->vbe_modes[modeid]);
|
|
fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60,
|
|
&info->var, info);
|
|
/*
|
|
* With pixclock set to 0, the default BIOS
|
|
* timings will be used in set_par().
|
|
*/
|
|
info->var.pixclock = 0;
|
|
goto gotmode;
|
|
}
|
|
}
|
|
printk(KERN_INFO "uvesafb: requested VBE mode 0x%x is "
|
|
"unavailable\n", vbemode);
|
|
vbemode = 0;
|
|
}
|
|
|
|
/* Count the modes in the modelist */
|
|
i = 0;
|
|
list_for_each(pos, &info->modelist)
|
|
i++;
|
|
|
|
/*
|
|
* Convert the modelist into a modedb so that we can use it with
|
|
* fb_find_mode().
|
|
*/
|
|
mode = kzalloc(i * sizeof(*mode), GFP_KERNEL);
|
|
if (mode) {
|
|
i = 0;
|
|
list_for_each(pos, &info->modelist) {
|
|
modelist = list_entry(pos, struct fb_modelist, list);
|
|
mode[i] = modelist->mode;
|
|
i++;
|
|
}
|
|
|
|
if (!mode_option)
|
|
mode_option = UVESAFB_DEFAULT_MODE;
|
|
|
|
i = fb_find_mode(&info->var, info, mode_option, mode, i,
|
|
NULL, 8);
|
|
|
|
kfree(mode);
|
|
}
|
|
|
|
/* fb_find_mode() failed */
|
|
if (i == 0) {
|
|
info->var.xres = 640;
|
|
info->var.yres = 480;
|
|
mode = (struct fb_videomode *)
|
|
fb_find_best_mode(&info->var, &info->modelist);
|
|
|
|
if (mode) {
|
|
fb_videomode_to_var(&info->var, mode);
|
|
} else {
|
|
modeid = par->vbe_modes[0].mode_id;
|
|
uvesafb_setup_var(&info->var, info,
|
|
&par->vbe_modes[modeid]);
|
|
fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60,
|
|
&info->var, info);
|
|
|
|
goto gotmode;
|
|
}
|
|
}
|
|
|
|
/* Look for a matching VBE mode. */
|
|
modeid = uvesafb_vbe_find_mode(par, info->var.xres, info->var.yres,
|
|
info->var.bits_per_pixel, UVESAFB_EXACT_RES);
|
|
|
|
if (modeid == -1)
|
|
return -EINVAL;
|
|
|
|
uvesafb_setup_var(&info->var, info, &par->vbe_modes[modeid]);
|
|
|
|
gotmode:
|
|
/*
|
|
* If we are not VBE3.0+ compliant, we're done -- the BIOS will
|
|
* ignore our timings anyway.
|
|
*/
|
|
if (par->vbe_ib.vbe_version < 0x0300 || par->nocrtc)
|
|
fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60,
|
|
&info->var, info);
|
|
|
|
return modeid;
|
|
}
|
|
|
|
static int uvesafb_setpalette(struct uvesafb_pal_entry *entries, int count,
|
|
int start, struct fb_info *info)
|
|
{
|
|
struct uvesafb_ktask *task;
|
|
#ifdef CONFIG_X86
|
|
struct uvesafb_par *par = info->par;
|
|
int i = par->mode_idx;
|
|
#endif
|
|
int err = 0;
|
|
|
|
/*
|
|
* We support palette modifications for 8 bpp modes only, so
|
|
* there can never be more than 256 entries.
|
|
*/
|
|
if (start + count > 256)
|
|
return -EINVAL;
|
|
|
|
#ifdef CONFIG_X86
|
|
/* Use VGA registers if mode is VGA-compatible. */
|
|
if (i >= 0 && i < par->vbe_modes_cnt &&
|
|
par->vbe_modes[i].mode_attr & VBE_MODE_VGACOMPAT) {
|
|
for (i = 0; i < count; i++) {
|
|
outb_p(start + i, dac_reg);
|
|
outb_p(entries[i].red, dac_val);
|
|
outb_p(entries[i].green, dac_val);
|
|
outb_p(entries[i].blue, dac_val);
|
|
}
|
|
}
|
|
#ifdef CONFIG_X86_32
|
|
else if (par->pmi_setpal) {
|
|
__asm__ __volatile__(
|
|
"call *(%%esi)"
|
|
: /* no return value */
|
|
: "a" (0x4f09), /* EAX */
|
|
"b" (0), /* EBX */
|
|
"c" (count), /* ECX */
|
|
"d" (start), /* EDX */
|
|
"D" (entries), /* EDI */
|
|
"S" (&par->pmi_pal)); /* ESI */
|
|
}
|
|
#endif /* CONFIG_X86_32 */
|
|
else
|
|
#endif /* CONFIG_X86 */
|
|
{
|
|
task = uvesafb_prep();
|
|
if (!task)
|
|
return -ENOMEM;
|
|
|
|
task->t.regs.eax = 0x4f09;
|
|
task->t.regs.ebx = 0x0;
|
|
task->t.regs.ecx = count;
|
|
task->t.regs.edx = start;
|
|
task->t.flags = TF_BUF_ESDI;
|
|
task->t.buf_len = sizeof(struct uvesafb_pal_entry) * count;
|
|
task->buf = entries;
|
|
|
|
err = uvesafb_exec(task);
|
|
if ((task->t.regs.eax & 0xffff) != 0x004f)
|
|
err = 1;
|
|
|
|
uvesafb_free(task);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
static int uvesafb_setcolreg(unsigned regno, unsigned red, unsigned green,
|
|
unsigned blue, unsigned transp,
|
|
struct fb_info *info)
|
|
{
|
|
struct uvesafb_pal_entry entry;
|
|
int shift = 16 - dac_width;
|
|
int err = 0;
|
|
|
|
if (regno >= info->cmap.len)
|
|
return -EINVAL;
|
|
|
|
if (info->var.bits_per_pixel == 8) {
|
|
entry.red = red >> shift;
|
|
entry.green = green >> shift;
|
|
entry.blue = blue >> shift;
|
|
entry.pad = 0;
|
|
|
|
err = uvesafb_setpalette(&entry, 1, regno, info);
|
|
} else if (regno < 16) {
|
|
switch (info->var.bits_per_pixel) {
|
|
case 16:
|
|
if (info->var.red.offset == 10) {
|
|
/* 1:5:5:5 */
|
|
((u32 *) (info->pseudo_palette))[regno] =
|
|
((red & 0xf800) >> 1) |
|
|
((green & 0xf800) >> 6) |
|
|
((blue & 0xf800) >> 11);
|
|
} else {
|
|
/* 0:5:6:5 */
|
|
((u32 *) (info->pseudo_palette))[regno] =
|
|
((red & 0xf800) ) |
|
|
((green & 0xfc00) >> 5) |
|
|
((blue & 0xf800) >> 11);
|
|
}
|
|
break;
|
|
|
|
case 24:
|
|
case 32:
|
|
red >>= 8;
|
|
green >>= 8;
|
|
blue >>= 8;
|
|
((u32 *)(info->pseudo_palette))[regno] =
|
|
(red << info->var.red.offset) |
|
|
(green << info->var.green.offset) |
|
|
(blue << info->var.blue.offset);
|
|
break;
|
|
}
|
|
}
|
|
return err;
|
|
}
|
|
|
|
static int uvesafb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
|
|
{
|
|
struct uvesafb_pal_entry *entries;
|
|
int shift = 16 - dac_width;
|
|
int i, err = 0;
|
|
|
|
if (info->var.bits_per_pixel == 8) {
|
|
if (cmap->start + cmap->len > info->cmap.start +
|
|
info->cmap.len || cmap->start < info->cmap.start)
|
|
return -EINVAL;
|
|
|
|
entries = kmalloc(sizeof(*entries) * cmap->len, GFP_KERNEL);
|
|
if (!entries)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < cmap->len; i++) {
|
|
entries[i].red = cmap->red[i] >> shift;
|
|
entries[i].green = cmap->green[i] >> shift;
|
|
entries[i].blue = cmap->blue[i] >> shift;
|
|
entries[i].pad = 0;
|
|
}
|
|
err = uvesafb_setpalette(entries, cmap->len, cmap->start, info);
|
|
kfree(entries);
|
|
} else {
|
|
/*
|
|
* For modes with bpp > 8, we only set the pseudo palette in
|
|
* the fb_info struct. We rely on uvesafb_setcolreg to do all
|
|
* sanity checking.
|
|
*/
|
|
for (i = 0; i < cmap->len; i++) {
|
|
err |= uvesafb_setcolreg(cmap->start + i, cmap->red[i],
|
|
cmap->green[i], cmap->blue[i],
|
|
0, info);
|
|
}
|
|
}
|
|
return err;
|
|
}
|
|
|
|
static int uvesafb_pan_display(struct fb_var_screeninfo *var,
|
|
struct fb_info *info)
|
|
{
|
|
#ifdef CONFIG_X86_32
|
|
int offset;
|
|
struct uvesafb_par *par = info->par;
|
|
|
|
offset = (var->yoffset * info->fix.line_length + var->xoffset) / 4;
|
|
|
|
/*
|
|
* It turns out it's not the best idea to do panning via vm86,
|
|
* so we only allow it if we have a PMI.
|
|
*/
|
|
if (par->pmi_start) {
|
|
__asm__ __volatile__(
|
|
"call *(%%edi)"
|
|
: /* no return value */
|
|
: "a" (0x4f07), /* EAX */
|
|
"b" (0), /* EBX */
|
|
"c" (offset), /* ECX */
|
|
"d" (offset >> 16), /* EDX */
|
|
"D" (&par->pmi_start)); /* EDI */
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
static int uvesafb_blank(int blank, struct fb_info *info)
|
|
{
|
|
struct uvesafb_ktask *task;
|
|
int err = 1;
|
|
#ifdef CONFIG_X86
|
|
struct uvesafb_par *par = info->par;
|
|
|
|
if (par->vbe_ib.capabilities & VBE_CAP_VGACOMPAT) {
|
|
int loop = 10000;
|
|
u8 seq = 0, crtc17 = 0;
|
|
|
|
if (blank == FB_BLANK_POWERDOWN) {
|
|
seq = 0x20;
|
|
crtc17 = 0x00;
|
|
err = 0;
|
|
} else {
|
|
seq = 0x00;
|
|
crtc17 = 0x80;
|
|
err = (blank == FB_BLANK_UNBLANK) ? 0 : -EINVAL;
|
|
}
|
|
|
|
vga_wseq(NULL, 0x00, 0x01);
|
|
seq |= vga_rseq(NULL, 0x01) & ~0x20;
|
|
vga_wseq(NULL, 0x00, seq);
|
|
|
|
crtc17 |= vga_rcrt(NULL, 0x17) & ~0x80;
|
|
while (loop--);
|
|
vga_wcrt(NULL, 0x17, crtc17);
|
|
vga_wseq(NULL, 0x00, 0x03);
|
|
} else
|
|
#endif /* CONFIG_X86 */
|
|
{
|
|
task = uvesafb_prep();
|
|
if (!task)
|
|
return -ENOMEM;
|
|
|
|
task->t.regs.eax = 0x4f10;
|
|
switch (blank) {
|
|
case FB_BLANK_UNBLANK:
|
|
task->t.regs.ebx = 0x0001;
|
|
break;
|
|
case FB_BLANK_NORMAL:
|
|
task->t.regs.ebx = 0x0101; /* standby */
|
|
break;
|
|
case FB_BLANK_POWERDOWN:
|
|
task->t.regs.ebx = 0x0401; /* powerdown */
|
|
break;
|
|
default:
|
|
goto out;
|
|
}
|
|
|
|
err = uvesafb_exec(task);
|
|
if (err || (task->t.regs.eax & 0xffff) != 0x004f)
|
|
err = 1;
|
|
out: uvesafb_free(task);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
static int uvesafb_open(struct fb_info *info, int user)
|
|
{
|
|
struct uvesafb_par *par = info->par;
|
|
int cnt = atomic_read(&par->ref_count);
|
|
|
|
if (!cnt && par->vbe_state_size)
|
|
par->vbe_state_orig = uvesafb_vbe_state_save(par);
|
|
|
|
atomic_inc(&par->ref_count);
|
|
return 0;
|
|
}
|
|
|
|
static int uvesafb_release(struct fb_info *info, int user)
|
|
{
|
|
struct uvesafb_ktask *task = NULL;
|
|
struct uvesafb_par *par = info->par;
|
|
int cnt = atomic_read(&par->ref_count);
|
|
|
|
if (!cnt)
|
|
return -EINVAL;
|
|
|
|
if (cnt != 1)
|
|
goto out;
|
|
|
|
task = uvesafb_prep();
|
|
if (!task)
|
|
goto out;
|
|
|
|
/* First, try to set the standard 80x25 text mode. */
|
|
task->t.regs.eax = 0x0003;
|
|
uvesafb_exec(task);
|
|
|
|
/*
|
|
* Now try to restore whatever hardware state we might have
|
|
* saved when the fb device was first opened.
|
|
*/
|
|
uvesafb_vbe_state_restore(par, par->vbe_state_orig);
|
|
out:
|
|
atomic_dec(&par->ref_count);
|
|
if (task)
|
|
uvesafb_free(task);
|
|
return 0;
|
|
}
|
|
|
|
static int uvesafb_set_par(struct fb_info *info)
|
|
{
|
|
struct uvesafb_par *par = info->par;
|
|
struct uvesafb_ktask *task = NULL;
|
|
struct vbe_crtc_ib *crtc = NULL;
|
|
struct vbe_mode_ib *mode = NULL;
|
|
int i, err = 0, depth = info->var.bits_per_pixel;
|
|
|
|
if (depth > 8 && depth != 32)
|
|
depth = info->var.red.length + info->var.green.length +
|
|
info->var.blue.length;
|
|
|
|
i = uvesafb_vbe_find_mode(par, info->var.xres, info->var.yres, depth,
|
|
UVESAFB_EXACT_RES | UVESAFB_EXACT_DEPTH);
|
|
if (i >= 0)
|
|
mode = &par->vbe_modes[i];
|
|
else
|
|
return -EINVAL;
|
|
|
|
task = uvesafb_prep();
|
|
if (!task)
|
|
return -ENOMEM;
|
|
setmode:
|
|
task->t.regs.eax = 0x4f02;
|
|
task->t.regs.ebx = mode->mode_id | 0x4000; /* use LFB */
|
|
|
|
if (par->vbe_ib.vbe_version >= 0x0300 && !par->nocrtc &&
|
|
info->var.pixclock != 0) {
|
|
task->t.regs.ebx |= 0x0800; /* use CRTC data */
|
|
task->t.flags = TF_BUF_ESDI;
|
|
crtc = kzalloc(sizeof(struct vbe_crtc_ib), GFP_KERNEL);
|
|
if (!crtc) {
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
crtc->horiz_start = info->var.xres + info->var.right_margin;
|
|
crtc->horiz_end = crtc->horiz_start + info->var.hsync_len;
|
|
crtc->horiz_total = crtc->horiz_end + info->var.left_margin;
|
|
|
|
crtc->vert_start = info->var.yres + info->var.lower_margin;
|
|
crtc->vert_end = crtc->vert_start + info->var.vsync_len;
|
|
crtc->vert_total = crtc->vert_end + info->var.upper_margin;
|
|
|
|
crtc->pixel_clock = PICOS2KHZ(info->var.pixclock) * 1000;
|
|
crtc->refresh_rate = (u16)(100 * (crtc->pixel_clock /
|
|
(crtc->vert_total * crtc->horiz_total)));
|
|
|
|
if (info->var.vmode & FB_VMODE_DOUBLE)
|
|
crtc->flags |= 0x1;
|
|
if (info->var.vmode & FB_VMODE_INTERLACED)
|
|
crtc->flags |= 0x2;
|
|
if (!(info->var.sync & FB_SYNC_HOR_HIGH_ACT))
|
|
crtc->flags |= 0x4;
|
|
if (!(info->var.sync & FB_SYNC_VERT_HIGH_ACT))
|
|
crtc->flags |= 0x8;
|
|
memcpy(&par->crtc, crtc, sizeof(*crtc));
|
|
} else {
|
|
memset(&par->crtc, 0, sizeof(*crtc));
|
|
}
|
|
|
|
task->t.buf_len = sizeof(struct vbe_crtc_ib);
|
|
task->buf = &par->crtc;
|
|
|
|
err = uvesafb_exec(task);
|
|
if (err || (task->t.regs.eax & 0xffff) != 0x004f) {
|
|
/*
|
|
* The mode switch might have failed because we tried to
|
|
* use our own timings. Try again with the default timings.
|
|
*/
|
|
if (crtc != NULL) {
|
|
printk(KERN_WARNING "uvesafb: mode switch failed "
|
|
"(eax=0x%x, err=%d). Trying again with "
|
|
"default timings.\n", task->t.regs.eax, err);
|
|
uvesafb_reset(task);
|
|
kfree(crtc);
|
|
crtc = NULL;
|
|
info->var.pixclock = 0;
|
|
goto setmode;
|
|
} else {
|
|
printk(KERN_ERR "uvesafb: mode switch failed (eax="
|
|
"0x%x, err=%d)\n", task->t.regs.eax, err);
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
}
|
|
par->mode_idx = i;
|
|
|
|
/* For 8bpp modes, always try to set the DAC to 8 bits. */
|
|
if (par->vbe_ib.capabilities & VBE_CAP_CAN_SWITCH_DAC &&
|
|
mode->bits_per_pixel <= 8) {
|
|
uvesafb_reset(task);
|
|
task->t.regs.eax = 0x4f08;
|
|
task->t.regs.ebx = 0x0800;
|
|
|
|
err = uvesafb_exec(task);
|
|
if (err || (task->t.regs.eax & 0xffff) != 0x004f ||
|
|
((task->t.regs.ebx & 0xff00) >> 8) != 8) {
|
|
dac_width = 6;
|
|
} else {
|
|
dac_width = 8;
|
|
}
|
|
}
|
|
|
|
info->fix.visual = (info->var.bits_per_pixel == 8) ?
|
|
FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
|
|
info->fix.line_length = mode->bytes_per_scan_line;
|
|
|
|
out: if (crtc != NULL)
|
|
kfree(crtc);
|
|
uvesafb_free(task);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void uvesafb_check_limits(struct fb_var_screeninfo *var,
|
|
struct fb_info *info)
|
|
{
|
|
const struct fb_videomode *mode;
|
|
struct uvesafb_par *par = info->par;
|
|
|
|
/*
|
|
* If pixclock is set to 0, then we're using default BIOS timings
|
|
* and thus don't have to perform any checks here.
|
|
*/
|
|
if (!var->pixclock)
|
|
return;
|
|
|
|
if (par->vbe_ib.vbe_version < 0x0300) {
|
|
fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, var, info);
|
|
return;
|
|
}
|
|
|
|
if (!fb_validate_mode(var, info))
|
|
return;
|
|
|
|
mode = fb_find_best_mode(var, &info->modelist);
|
|
if (mode) {
|
|
if (mode->xres == var->xres && mode->yres == var->yres &&
|
|
!(mode->vmode & (FB_VMODE_INTERLACED | FB_VMODE_DOUBLE))) {
|
|
fb_videomode_to_var(var, mode);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (info->monspecs.gtf && !fb_get_mode(FB_MAXTIMINGS, 0, var, info))
|
|
return;
|
|
/* Use default refresh rate */
|
|
var->pixclock = 0;
|
|
}
|
|
|
|
static int uvesafb_check_var(struct fb_var_screeninfo *var,
|
|
struct fb_info *info)
|
|
{
|
|
struct uvesafb_par *par = info->par;
|
|
struct vbe_mode_ib *mode = NULL;
|
|
int match = -1;
|
|
int depth = var->red.length + var->green.length + var->blue.length;
|
|
|
|
/*
|
|
* Various apps will use bits_per_pixel to set the color depth,
|
|
* which is theoretically incorrect, but which we'll try to handle
|
|
* here.
|
|
*/
|
|
if (depth == 0 || abs(depth - var->bits_per_pixel) >= 8)
|
|
depth = var->bits_per_pixel;
|
|
|
|
match = uvesafb_vbe_find_mode(par, var->xres, var->yres, depth,
|
|
UVESAFB_EXACT_RES);
|
|
if (match == -1)
|
|
return -EINVAL;
|
|
|
|
mode = &par->vbe_modes[match];
|
|
uvesafb_setup_var(var, info, mode);
|
|
|
|
/*
|
|
* Check whether we have remapped enough memory for this mode.
|
|
* We might be called at an early stage, when we haven't remapped
|
|
* any memory yet, in which case we simply skip the check.
|
|
*/
|
|
if (var->yres * mode->bytes_per_scan_line > info->fix.smem_len
|
|
&& info->fix.smem_len)
|
|
return -EINVAL;
|
|
|
|
if ((var->vmode & FB_VMODE_DOUBLE) &&
|
|
!(par->vbe_modes[match].mode_attr & 0x100))
|
|
var->vmode &= ~FB_VMODE_DOUBLE;
|
|
|
|
if ((var->vmode & FB_VMODE_INTERLACED) &&
|
|
!(par->vbe_modes[match].mode_attr & 0x200))
|
|
var->vmode &= ~FB_VMODE_INTERLACED;
|
|
|
|
uvesafb_check_limits(var, info);
|
|
|
|
var->xres_virtual = var->xres;
|
|
var->yres_virtual = (par->ypan) ?
|
|
info->fix.smem_len / mode->bytes_per_scan_line :
|
|
var->yres;
|
|
return 0;
|
|
}
|
|
|
|
static struct fb_ops uvesafb_ops = {
|
|
.owner = THIS_MODULE,
|
|
.fb_open = uvesafb_open,
|
|
.fb_release = uvesafb_release,
|
|
.fb_setcolreg = uvesafb_setcolreg,
|
|
.fb_setcmap = uvesafb_setcmap,
|
|
.fb_pan_display = uvesafb_pan_display,
|
|
.fb_blank = uvesafb_blank,
|
|
.fb_fillrect = cfb_fillrect,
|
|
.fb_copyarea = cfb_copyarea,
|
|
.fb_imageblit = cfb_imageblit,
|
|
.fb_check_var = uvesafb_check_var,
|
|
.fb_set_par = uvesafb_set_par,
|
|
};
|
|
|
|
static void __devinit uvesafb_init_info(struct fb_info *info,
|
|
struct vbe_mode_ib *mode)
|
|
{
|
|
unsigned int size_vmode;
|
|
unsigned int size_remap;
|
|
unsigned int size_total;
|
|
struct uvesafb_par *par = info->par;
|
|
int i, h;
|
|
|
|
info->pseudo_palette = ((u8 *)info->par + sizeof(struct uvesafb_par));
|
|
info->fix = uvesafb_fix;
|
|
info->fix.ypanstep = par->ypan ? 1 : 0;
|
|
info->fix.ywrapstep = (par->ypan > 1) ? 1 : 0;
|
|
|
|
/* Disable blanking if the user requested so. */
|
|
if (!blank)
|
|
info->fbops->fb_blank = NULL;
|
|
|
|
/*
|
|
* Find out how much IO memory is required for the mode with
|
|
* the highest resolution.
|
|
*/
|
|
size_remap = 0;
|
|
for (i = 0; i < par->vbe_modes_cnt; i++) {
|
|
h = par->vbe_modes[i].bytes_per_scan_line *
|
|
par->vbe_modes[i].y_res;
|
|
if (h > size_remap)
|
|
size_remap = h;
|
|
}
|
|
size_remap *= 2;
|
|
|
|
/*
|
|
* size_vmode -- that is the amount of memory needed for the
|
|
* used video mode, i.e. the minimum amount of
|
|
* memory we need.
|
|
*/
|
|
if (mode != NULL) {
|
|
size_vmode = info->var.yres * mode->bytes_per_scan_line;
|
|
} else {
|
|
size_vmode = info->var.yres * info->var.xres *
|
|
((info->var.bits_per_pixel + 7) >> 3);
|
|
}
|
|
|
|
/*
|
|
* size_total -- all video memory we have. Used for mtrr
|
|
* entries, resource allocation and bounds
|
|
* checking.
|
|
*/
|
|
size_total = par->vbe_ib.total_memory * 65536;
|
|
if (vram_total)
|
|
size_total = vram_total * 1024 * 1024;
|
|
if (size_total < size_vmode)
|
|
size_total = size_vmode;
|
|
|
|
/*
|
|
* size_remap -- the amount of video memory we are going to
|
|
* use for vesafb. With modern cards it is no
|
|
* option to simply use size_total as th
|
|
* wastes plenty of kernel address space.
|
|
*/
|
|
if (vram_remap)
|
|
size_remap = vram_remap * 1024 * 1024;
|
|
if (size_remap < size_vmode)
|
|
size_remap = size_vmode;
|
|
if (size_remap > size_total)
|
|
size_remap = size_total;
|
|
|
|
info->fix.smem_len = size_remap;
|
|
info->fix.smem_start = mode->phys_base_ptr;
|
|
|
|
/*
|
|
* We have to set yres_virtual here because when setup_var() was
|
|
* called, smem_len wasn't defined yet.
|
|
*/
|
|
info->var.yres_virtual = info->fix.smem_len /
|
|
mode->bytes_per_scan_line;
|
|
|
|
if (par->ypan && info->var.yres_virtual > info->var.yres) {
|
|
printk(KERN_INFO "uvesafb: scrolling: %s "
|
|
"using protected mode interface, "
|
|
"yres_virtual=%d\n",
|
|
(par->ypan > 1) ? "ywrap" : "ypan",
|
|
info->var.yres_virtual);
|
|
} else {
|
|
printk(KERN_INFO "uvesafb: scrolling: redraw\n");
|
|
info->var.yres_virtual = info->var.yres;
|
|
par->ypan = 0;
|
|
}
|
|
|
|
info->flags = FBINFO_FLAG_DEFAULT |
|
|
(par->ypan ? FBINFO_HWACCEL_YPAN : 0);
|
|
|
|
if (!par->ypan)
|
|
info->fbops->fb_pan_display = NULL;
|
|
}
|
|
|
|
static void __devinit uvesafb_init_mtrr(struct fb_info *info)
|
|
{
|
|
#ifdef CONFIG_MTRR
|
|
if (mtrr && !(info->fix.smem_start & (PAGE_SIZE - 1))) {
|
|
int temp_size = info->fix.smem_len;
|
|
unsigned int type = 0;
|
|
|
|
switch (mtrr) {
|
|
case 1:
|
|
type = MTRR_TYPE_UNCACHABLE;
|
|
break;
|
|
case 2:
|
|
type = MTRR_TYPE_WRBACK;
|
|
break;
|
|
case 3:
|
|
type = MTRR_TYPE_WRCOMB;
|
|
break;
|
|
case 4:
|
|
type = MTRR_TYPE_WRTHROUGH;
|
|
break;
|
|
default:
|
|
type = 0;
|
|
break;
|
|
}
|
|
|
|
if (type) {
|
|
int rc;
|
|
|
|
/* Find the largest power-of-two */
|
|
temp_size = roundup_pow_of_two(temp_size);
|
|
|
|
/* Try and find a power of two to add */
|
|
do {
|
|
rc = mtrr_add(info->fix.smem_start,
|
|
temp_size, type, 1);
|
|
temp_size >>= 1;
|
|
} while (temp_size >= PAGE_SIZE && rc == -EINVAL);
|
|
}
|
|
}
|
|
#endif /* CONFIG_MTRR */
|
|
}
|
|
|
|
static void __devinit uvesafb_ioremap(struct fb_info *info)
|
|
{
|
|
#ifdef CONFIG_X86
|
|
switch (mtrr) {
|
|
case 1: /* uncachable */
|
|
info->screen_base = ioremap_nocache(info->fix.smem_start, info->fix.smem_len);
|
|
break;
|
|
case 2: /* write-back */
|
|
info->screen_base = ioremap_cache(info->fix.smem_start, info->fix.smem_len);
|
|
break;
|
|
case 3: /* write-combining */
|
|
info->screen_base = ioremap_wc(info->fix.smem_start, info->fix.smem_len);
|
|
break;
|
|
case 4: /* write-through */
|
|
default:
|
|
info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);
|
|
break;
|
|
}
|
|
#else
|
|
info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);
|
|
#endif /* CONFIG_X86 */
|
|
}
|
|
|
|
static ssize_t uvesafb_show_vbe_ver(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
|
|
struct uvesafb_par *par = info->par;
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%.4x\n", par->vbe_ib.vbe_version);
|
|
}
|
|
|
|
static DEVICE_ATTR(vbe_version, S_IRUGO, uvesafb_show_vbe_ver, NULL);
|
|
|
|
static ssize_t uvesafb_show_vbe_modes(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
|
|
struct uvesafb_par *par = info->par;
|
|
int ret = 0, i;
|
|
|
|
for (i = 0; i < par->vbe_modes_cnt && ret < PAGE_SIZE; i++) {
|
|
ret += snprintf(buf + ret, PAGE_SIZE - ret,
|
|
"%dx%d-%d, 0x%.4x\n",
|
|
par->vbe_modes[i].x_res, par->vbe_modes[i].y_res,
|
|
par->vbe_modes[i].depth, par->vbe_modes[i].mode_id);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static DEVICE_ATTR(vbe_modes, S_IRUGO, uvesafb_show_vbe_modes, NULL);
|
|
|
|
static ssize_t uvesafb_show_vendor(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
|
|
struct uvesafb_par *par = info->par;
|
|
|
|
if (par->vbe_ib.oem_vendor_name_ptr)
|
|
return snprintf(buf, PAGE_SIZE, "%s\n", (char *)
|
|
(&par->vbe_ib) + par->vbe_ib.oem_vendor_name_ptr);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static DEVICE_ATTR(oem_vendor, S_IRUGO, uvesafb_show_vendor, NULL);
|
|
|
|
static ssize_t uvesafb_show_product_name(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
|
|
struct uvesafb_par *par = info->par;
|
|
|
|
if (par->vbe_ib.oem_product_name_ptr)
|
|
return snprintf(buf, PAGE_SIZE, "%s\n", (char *)
|
|
(&par->vbe_ib) + par->vbe_ib.oem_product_name_ptr);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static DEVICE_ATTR(oem_product_name, S_IRUGO, uvesafb_show_product_name, NULL);
|
|
|
|
static ssize_t uvesafb_show_product_rev(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
|
|
struct uvesafb_par *par = info->par;
|
|
|
|
if (par->vbe_ib.oem_product_rev_ptr)
|
|
return snprintf(buf, PAGE_SIZE, "%s\n", (char *)
|
|
(&par->vbe_ib) + par->vbe_ib.oem_product_rev_ptr);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static DEVICE_ATTR(oem_product_rev, S_IRUGO, uvesafb_show_product_rev, NULL);
|
|
|
|
static ssize_t uvesafb_show_oem_string(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
|
|
struct uvesafb_par *par = info->par;
|
|
|
|
if (par->vbe_ib.oem_string_ptr)
|
|
return snprintf(buf, PAGE_SIZE, "%s\n",
|
|
(char *)(&par->vbe_ib) + par->vbe_ib.oem_string_ptr);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static DEVICE_ATTR(oem_string, S_IRUGO, uvesafb_show_oem_string, NULL);
|
|
|
|
static ssize_t uvesafb_show_nocrtc(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
|
|
struct uvesafb_par *par = info->par;
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%d\n", par->nocrtc);
|
|
}
|
|
|
|
static ssize_t uvesafb_store_nocrtc(struct device *dev,
|
|
struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
struct fb_info *info = platform_get_drvdata(to_platform_device(dev));
|
|
struct uvesafb_par *par = info->par;
|
|
|
|
if (count > 0) {
|
|
if (buf[0] == '0')
|
|
par->nocrtc = 0;
|
|
else
|
|
par->nocrtc = 1;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR(nocrtc, S_IRUGO | S_IWUSR, uvesafb_show_nocrtc,
|
|
uvesafb_store_nocrtc);
|
|
|
|
static struct attribute *uvesafb_dev_attrs[] = {
|
|
&dev_attr_vbe_version.attr,
|
|
&dev_attr_vbe_modes.attr,
|
|
&dev_attr_oem_vendor.attr,
|
|
&dev_attr_oem_product_name.attr,
|
|
&dev_attr_oem_product_rev.attr,
|
|
&dev_attr_oem_string.attr,
|
|
&dev_attr_nocrtc.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct attribute_group uvesafb_dev_attgrp = {
|
|
.name = NULL,
|
|
.attrs = uvesafb_dev_attrs,
|
|
};
|
|
|
|
static int __devinit uvesafb_probe(struct platform_device *dev)
|
|
{
|
|
struct fb_info *info;
|
|
struct vbe_mode_ib *mode = NULL;
|
|
struct uvesafb_par *par;
|
|
int err = 0, i;
|
|
|
|
info = framebuffer_alloc(sizeof(*par) + sizeof(u32) * 256, &dev->dev);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
par = info->par;
|
|
|
|
err = uvesafb_vbe_init(info);
|
|
if (err) {
|
|
printk(KERN_ERR "uvesafb: vbe_init() failed with %d\n", err);
|
|
goto out;
|
|
}
|
|
|
|
info->fbops = &uvesafb_ops;
|
|
|
|
i = uvesafb_vbe_init_mode(info);
|
|
if (i < 0) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
} else {
|
|
mode = &par->vbe_modes[i];
|
|
}
|
|
|
|
if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
|
|
err = -ENXIO;
|
|
goto out;
|
|
}
|
|
|
|
uvesafb_init_info(info, mode);
|
|
|
|
if (!request_region(0x3c0, 32, "uvesafb")) {
|
|
printk(KERN_ERR "uvesafb: request region 0x3c0-0x3e0 failed\n");
|
|
err = -EIO;
|
|
goto out_mode;
|
|
}
|
|
|
|
if (!request_mem_region(info->fix.smem_start, info->fix.smem_len,
|
|
"uvesafb")) {
|
|
printk(KERN_ERR "uvesafb: cannot reserve video memory at "
|
|
"0x%lx\n", info->fix.smem_start);
|
|
err = -EIO;
|
|
goto out_reg;
|
|
}
|
|
|
|
uvesafb_init_mtrr(info);
|
|
uvesafb_ioremap(info);
|
|
|
|
if (!info->screen_base) {
|
|
printk(KERN_ERR
|
|
"uvesafb: abort, cannot ioremap 0x%x bytes of video "
|
|
"memory at 0x%lx\n",
|
|
info->fix.smem_len, info->fix.smem_start);
|
|
err = -EIO;
|
|
goto out_mem;
|
|
}
|
|
|
|
platform_set_drvdata(dev, info);
|
|
|
|
if (register_framebuffer(info) < 0) {
|
|
printk(KERN_ERR
|
|
"uvesafb: failed to register framebuffer device\n");
|
|
err = -EINVAL;
|
|
goto out_unmap;
|
|
}
|
|
|
|
printk(KERN_INFO "uvesafb: framebuffer at 0x%lx, mapped to 0x%p, "
|
|
"using %dk, total %dk\n", info->fix.smem_start,
|
|
info->screen_base, info->fix.smem_len/1024,
|
|
par->vbe_ib.total_memory * 64);
|
|
printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node,
|
|
info->fix.id);
|
|
|
|
err = sysfs_create_group(&dev->dev.kobj, &uvesafb_dev_attgrp);
|
|
if (err != 0)
|
|
printk(KERN_WARNING "fb%d: failed to register attributes\n",
|
|
info->node);
|
|
|
|
return 0;
|
|
|
|
out_unmap:
|
|
iounmap(info->screen_base);
|
|
out_mem:
|
|
release_mem_region(info->fix.smem_start, info->fix.smem_len);
|
|
out_reg:
|
|
release_region(0x3c0, 32);
|
|
out_mode:
|
|
if (!list_empty(&info->modelist))
|
|
fb_destroy_modelist(&info->modelist);
|
|
fb_destroy_modedb(info->monspecs.modedb);
|
|
fb_dealloc_cmap(&info->cmap);
|
|
out:
|
|
if (par->vbe_modes)
|
|
kfree(par->vbe_modes);
|
|
|
|
framebuffer_release(info);
|
|
return err;
|
|
}
|
|
|
|
static int uvesafb_remove(struct platform_device *dev)
|
|
{
|
|
struct fb_info *info = platform_get_drvdata(dev);
|
|
|
|
if (info) {
|
|
struct uvesafb_par *par = info->par;
|
|
|
|
sysfs_remove_group(&dev->dev.kobj, &uvesafb_dev_attgrp);
|
|
unregister_framebuffer(info);
|
|
release_region(0x3c0, 32);
|
|
iounmap(info->screen_base);
|
|
release_mem_region(info->fix.smem_start, info->fix.smem_len);
|
|
fb_destroy_modedb(info->monspecs.modedb);
|
|
fb_dealloc_cmap(&info->cmap);
|
|
|
|
if (par) {
|
|
if (par->vbe_modes)
|
|
kfree(par->vbe_modes);
|
|
if (par->vbe_state_orig)
|
|
kfree(par->vbe_state_orig);
|
|
if (par->vbe_state_saved)
|
|
kfree(par->vbe_state_saved);
|
|
}
|
|
|
|
framebuffer_release(info);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver uvesafb_driver = {
|
|
.probe = uvesafb_probe,
|
|
.remove = uvesafb_remove,
|
|
.driver = {
|
|
.name = "uvesafb",
|
|
},
|
|
};
|
|
|
|
static struct platform_device *uvesafb_device;
|
|
|
|
#ifndef MODULE
|
|
static int __devinit uvesafb_setup(char *options)
|
|
{
|
|
char *this_opt;
|
|
|
|
if (!options || !*options)
|
|
return 0;
|
|
|
|
while ((this_opt = strsep(&options, ",")) != NULL) {
|
|
if (!*this_opt) continue;
|
|
|
|
if (!strcmp(this_opt, "redraw"))
|
|
ypan = 0;
|
|
else if (!strcmp(this_opt, "ypan"))
|
|
ypan = 1;
|
|
else if (!strcmp(this_opt, "ywrap"))
|
|
ypan = 2;
|
|
else if (!strcmp(this_opt, "vgapal"))
|
|
pmi_setpal = 0;
|
|
else if (!strcmp(this_opt, "pmipal"))
|
|
pmi_setpal = 1;
|
|
else if (!strncmp(this_opt, "mtrr:", 5))
|
|
mtrr = simple_strtoul(this_opt+5, NULL, 0);
|
|
else if (!strcmp(this_opt, "nomtrr"))
|
|
mtrr = 0;
|
|
else if (!strcmp(this_opt, "nocrtc"))
|
|
nocrtc = 1;
|
|
else if (!strcmp(this_opt, "noedid"))
|
|
noedid = 1;
|
|
else if (!strcmp(this_opt, "noblank"))
|
|
blank = 0;
|
|
else if (!strncmp(this_opt, "vtotal:", 7))
|
|
vram_total = simple_strtoul(this_opt + 7, NULL, 0);
|
|
else if (!strncmp(this_opt, "vremap:", 7))
|
|
vram_remap = simple_strtoul(this_opt + 7, NULL, 0);
|
|
else if (!strncmp(this_opt, "maxhf:", 6))
|
|
maxhf = simple_strtoul(this_opt + 6, NULL, 0);
|
|
else if (!strncmp(this_opt, "maxvf:", 6))
|
|
maxvf = simple_strtoul(this_opt + 6, NULL, 0);
|
|
else if (!strncmp(this_opt, "maxclk:", 7))
|
|
maxclk = simple_strtoul(this_opt + 7, NULL, 0);
|
|
else if (!strncmp(this_opt, "vbemode:", 8))
|
|
vbemode = simple_strtoul(this_opt + 8, NULL, 0);
|
|
else if (this_opt[0] >= '0' && this_opt[0] <= '9') {
|
|
mode_option = this_opt;
|
|
} else {
|
|
printk(KERN_WARNING
|
|
"uvesafb: unrecognized option %s\n", this_opt);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif /* !MODULE */
|
|
|
|
static ssize_t show_v86d(struct device_driver *dev, char *buf)
|
|
{
|
|
return snprintf(buf, PAGE_SIZE, "%s\n", v86d_path);
|
|
}
|
|
|
|
static ssize_t store_v86d(struct device_driver *dev, const char *buf,
|
|
size_t count)
|
|
{
|
|
strncpy(v86d_path, buf, PATH_MAX);
|
|
return count;
|
|
}
|
|
|
|
static DRIVER_ATTR(v86d, S_IRUGO | S_IWUSR, show_v86d, store_v86d);
|
|
|
|
static int __devinit uvesafb_init(void)
|
|
{
|
|
int err;
|
|
|
|
#ifndef MODULE
|
|
char *option = NULL;
|
|
|
|
if (fb_get_options("uvesafb", &option))
|
|
return -ENODEV;
|
|
uvesafb_setup(option);
|
|
#endif
|
|
err = cn_add_callback(&uvesafb_cn_id, "uvesafb", uvesafb_cn_callback);
|
|
if (err)
|
|
return err;
|
|
|
|
err = platform_driver_register(&uvesafb_driver);
|
|
|
|
if (!err) {
|
|
uvesafb_device = platform_device_alloc("uvesafb", 0);
|
|
if (uvesafb_device)
|
|
err = platform_device_add(uvesafb_device);
|
|
else
|
|
err = -ENOMEM;
|
|
|
|
if (err) {
|
|
platform_device_put(uvesafb_device);
|
|
platform_driver_unregister(&uvesafb_driver);
|
|
cn_del_callback(&uvesafb_cn_id);
|
|
return err;
|
|
}
|
|
|
|
err = driver_create_file(&uvesafb_driver.driver,
|
|
&driver_attr_v86d);
|
|
if (err) {
|
|
printk(KERN_WARNING "uvesafb: failed to register "
|
|
"attributes\n");
|
|
err = 0;
|
|
}
|
|
}
|
|
return err;
|
|
}
|
|
|
|
module_init(uvesafb_init);
|
|
|
|
static void __devexit uvesafb_exit(void)
|
|
{
|
|
struct uvesafb_ktask *task;
|
|
|
|
if (v86d_started) {
|
|
task = uvesafb_prep();
|
|
if (task) {
|
|
task->t.flags = TF_EXIT;
|
|
uvesafb_exec(task);
|
|
uvesafb_free(task);
|
|
}
|
|
}
|
|
|
|
cn_del_callback(&uvesafb_cn_id);
|
|
driver_remove_file(&uvesafb_driver.driver, &driver_attr_v86d);
|
|
platform_device_unregister(uvesafb_device);
|
|
platform_driver_unregister(&uvesafb_driver);
|
|
}
|
|
|
|
module_exit(uvesafb_exit);
|
|
|
|
static int param_set_scroll(const char *val, const struct kernel_param *kp)
|
|
{
|
|
ypan = 0;
|
|
|
|
if (!strcmp(val, "redraw"))
|
|
ypan = 0;
|
|
else if (!strcmp(val, "ypan"))
|
|
ypan = 1;
|
|
else if (!strcmp(val, "ywrap"))
|
|
ypan = 2;
|
|
else
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
static struct kernel_param_ops param_ops_scroll = {
|
|
.set = param_set_scroll,
|
|
};
|
|
#define param_check_scroll(name, p) __param_check(name, p, void)
|
|
|
|
module_param_named(scroll, ypan, scroll, 0);
|
|
MODULE_PARM_DESC(scroll,
|
|
"Scrolling mode, set to 'redraw', 'ypan', or 'ywrap'");
|
|
module_param_named(vgapal, pmi_setpal, invbool, 0);
|
|
MODULE_PARM_DESC(vgapal, "Set palette using VGA registers");
|
|
module_param_named(pmipal, pmi_setpal, bool, 0);
|
|
MODULE_PARM_DESC(pmipal, "Set palette using PMI calls");
|
|
module_param(mtrr, uint, 0);
|
|
MODULE_PARM_DESC(mtrr,
|
|
"Memory Type Range Registers setting. Use 0 to disable.");
|
|
module_param(blank, bool, 0);
|
|
MODULE_PARM_DESC(blank, "Enable hardware blanking");
|
|
module_param(nocrtc, bool, 0);
|
|
MODULE_PARM_DESC(nocrtc, "Ignore CRTC timings when setting modes");
|
|
module_param(noedid, bool, 0);
|
|
MODULE_PARM_DESC(noedid,
|
|
"Ignore EDID-provided monitor limits when setting modes");
|
|
module_param(vram_remap, uint, 0);
|
|
MODULE_PARM_DESC(vram_remap, "Set amount of video memory to be used [MiB]");
|
|
module_param(vram_total, uint, 0);
|
|
MODULE_PARM_DESC(vram_total, "Set total amount of video memoery [MiB]");
|
|
module_param(maxclk, ushort, 0);
|
|
MODULE_PARM_DESC(maxclk, "Maximum pixelclock [MHz], overrides EDID data");
|
|
module_param(maxhf, ushort, 0);
|
|
MODULE_PARM_DESC(maxhf,
|
|
"Maximum horizontal frequency [kHz], overrides EDID data");
|
|
module_param(maxvf, ushort, 0);
|
|
MODULE_PARM_DESC(maxvf,
|
|
"Maximum vertical frequency [Hz], overrides EDID data");
|
|
module_param(mode_option, charp, 0);
|
|
MODULE_PARM_DESC(mode_option,
|
|
"Specify initial video mode as \"<xres>x<yres>[-<bpp>][@<refresh>]\"");
|
|
module_param(vbemode, ushort, 0);
|
|
MODULE_PARM_DESC(vbemode,
|
|
"VBE mode number to set, overrides the 'mode' option");
|
|
module_param_string(v86d, v86d_path, PATH_MAX, 0660);
|
|
MODULE_PARM_DESC(v86d, "Path to the v86d userspace helper.");
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Michal Januszewski <spock@gentoo.org>");
|
|
MODULE_DESCRIPTION("Framebuffer driver for VBE2.0+ compliant graphics boards");
|
|
|