/*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* A console driver for Apple's Platinum onboard video controller,
* found in (all?) Catalyst logic boards including the Powermac 7200.
*
* Used valkyriefb.c from NetBSD, and platinumfb.c/platinumfb.h from
* Linux sources as templates.
*
* Platinum is broken regarding openfirmware video variables. In OF,
* for a powermac 7200, doing "dev /platinum .properties" results in:
*
* name platinum
* device_type display
* model AAPL,343S1184
* AAPL,connector monitor
* reg F8000000 00000800
* F1000000 01000000
* AAPL,interrupts 0000001E
*
* The first reg is the register set, and the second is for the
* framebuffer. There is also a set of colormap registers hardcoded
* in platinumfbreg.h that (I think) aren't in openfirmware.
*
* powermac 7200 VRAM min and max limits are 1 and 4 Mb respectively.
* OF claims 16M so we don't use that value. If other machines can
* can have more or less VRAM this code will need to be modified
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: platinumfb.c,v 1.6 2021/08/07 16:18:57 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <uvm/uvm_param.h>
#include <dev/ofw/openfirm.h>
#include <machine/autoconf.h>
#include <machine/pio.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wsfont/wsfont.h>
#include <dev/rasops/rasops.h>
#include <dev/wscons/wsdisplay_vconsvar.h>
#include <dev/videomode/videomode.h>
#include <arch/macppc/dev/platinumfbreg.h>
#include <sys/sysctl.h>
#include "opt_wsemul.h"
/*
* here is a link of supported modes and resolutions:
*
https://support.apple.com/kb/SP343?locale=en_US
*
* default console and X bpp/depth for built-in X config file,
* select 8 or 16 or 32.
*
*/
#define PLATINUM_CONSOLE_DEPTH 8
#define PLATINUM_FB_DEPTH 16
/*
* XXX 16 bit console not working without this patch to rasops15.c,
*
http://mail-index.netbsd.org/current-users/2016/09/14/msg030132.html
* see thread, but rasops may need separate flags for host byte order
* and video hw byte order
*/
/*
* resolution, from one of platinumfb_setting vmode_name's.
*/
#define PLATINUM_FB_VMODE "1024x768x60"
struct platinumfb_setting {
char vmode_name[24];
int32_t width;
int32_t height;
uint8_t freq;
uint8_t macmode;
int32_t pitch[3];
uint32_t regs[26];
uint8_t offset[3];
uint8_t mode[3];
uint8_t dacula_ctrl[3];
uint8_t clock_params[2][2];
};
struct platinumfb_softc {
device_t sc_dev;
int sc_node;
uint8_t *sc_reg;
uint32_t sc_reg_size;
uint8_t *sc_cmap;
uint32_t sc_cmap_size;
uint8_t *sc_fb;
uint32_t sc_fb_size;
int sc_depth;
int sc_width, sc_height, sc_linebytes;
const struct videomode *sc_videomode;
uint8_t sc_modereg;
int sc_mode;
u_char sc_cmap_red[256];
u_char sc_cmap_green[256];
u_char sc_cmap_blue[256];
struct vcons_data vd;
uint8_t sc_cmode;
uint8_t sc_dac_type;
uint32_t sc_vram;
int sc_on;
struct platinumfb_setting *sc_pfs;
};
#define DIV2 0x20
#define DIV4 0x40
#define DIV8 0x60
#define DIV16 0x80
static struct platinumfb_setting platinum_5 = {
"640x480x60",
640, 480, 60, 5,
{ 672, 1312, 2592 },
{ 0xff0, 4, 0, 0, 0, 0, 0x320, 0,
0, 0x15e, 0xc8, 0x18, 0x18f, 0x2f, 0x35, 0x3e,
0x42, 0x182, 0x18e, 0x41a, 0x418, 2, 7, 0x44,
0x404, 0x408 }, { 0x34, 0x3c, 0x41 },
{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
{{ 26, 0 + DIV8 }, { 14, 2 + DIV4 }}
};
static struct platinumfb_setting platinum_12 = {
"800x600x75",
800, 600, 75, 12,
{ 832, 1632, 3232 },
{ 0xff0, 4, 0, 0, 0, 0, 0x320, 0,
0, 0x1ce, 0x108, 0x14, 0x20f, 0x27, 0x30, 0x39,
0x72, 0x202, 0x20e, 0x4e2, 0x4e0, 4, 9, 0x2e,
0x4de, 0x4df }, { 0x64, 0x6c, 0x71 },
{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
{{ 122, 7 + DIV4 }, { 62, 9 + DIV2 }}
};
static struct platinumfb_setting platinum_14 = {
"1024x768x60",
1024, 768, 60, 14,
{ 1056, 2080, 4128 },
{ 0xff0, 4, 0, 0, 0, 0, 0x320, 0,
0, 0x25a, 0x14f, 0x22, 0x29f, 0x43, 0x49, 0x5b,
0x8e, 0x28e, 0x29e, 0x64c, 0x64a, 0xa, 0xf, 0x44,
0x644, 0x646 }, { 0x80, 0x88, 0x8d },
{ 2, 0, 0xff }, { 0x11, 0x15, 0x19 },
{{ 71, 6 + DIV2 }, { 118, 13 + DIV2 }}
};
static struct platinumfb_setting platinum_20 = {
"1280x1024x75",
1280, 1024, 75, 20,
{ 1312, 2592, 2592 },
{ 0xffc, 4, 0, 0, 0, 0, 0x428, 0,
0, 0xb3, 0xd3, 0x12, 0x1a5, 0x23, 0x28, 0x2d,
0x5e, 0x19e, 0x1a4, 0x854, 0x852, 4, 9, 0x50,
0x850, 0x851 }, { 0x58, 0x5d, 0x5d },
{ 0, 0xff, 0xff }, { 0x51, 0x55, 0x55 },
{{ 45, 3 }, { 66, 7 }}
};
static struct platinumfb_setting *pfb_setting[] = {
&platinum_5,
&platinum_12,
&platinum_14,
&platinum_20
};
static struct vcons_screen platinumfb_console_screen;
static int platinumfb_match(device_t, cfdata_t, void *);
static void platinumfb_attach(device_t, device_t, void *);
CFATTACH_DECL_NEW(platinumfb, sizeof(struct platinumfb_softc),
platinumfb_match, platinumfb_attach, NULL, NULL);
static int platinumfb_init(device_t);
static int platinumfb_set_mode(struct platinumfb_softc *,
const struct videomode *, int);
static void platinumfb_set_rasops(struct platinumfb_softc *,
struct rasops_info *, int);
static int platinumfb_ioctl(void *, void *, u_long, void *, int,
struct lwp *);
static paddr_t platinumfb_mmap(void *, void *, off_t, int);
static void platinumfb_init_screen(void *, struct vcons_screen *, int,
long *);
static int platinumfb_putcmap(struct platinumfb_softc *,
struct wsdisplay_cmap *);
static int platinumfb_getcmap(struct platinumfb_softc *,
struct wsdisplay_cmap *);
static void platinumfb_init_cmap(struct platinumfb_softc *);
static void platinumfb_restore_palette(struct platinumfb_softc *);
static void platinumfb_putpalreg(struct platinumfb_softc *,
uint8_t, uint8_t, uint8_t, uint8_t);
static uint32_t platinumfb_line_tweak(struct platinumfb_softc *);
static paddr_t platinumfb_page_align_up(struct platinumfb_softc *);
static void platinumfb_set_clock(struct platinumfb_softc *);
static void platinumfb_dac_type(struct platinumfb_softc *);
static void platinumfb_memory_size(struct platinumfb_softc *);
static void platinumfb_set_hardware(struct platinumfb_softc *);
static inline void platinumfb_write_reg(struct platinumfb_softc *,
int, uint32_t);
#ifdef notyet
static inline uint32_t platinumfb_read_reg(struct platinumfb_softc *, int);
#endif
static inline void platinumfb_write_cmap_reg(struct platinumfb_softc *,
int, uint8_t);
static inline uint8_t platinumfb_read_cmap_reg(struct platinumfb_softc *, int);
static inline void platinumfb_store_d2(struct platinumfb_softc *,
uint8_t, uint8_t);
struct wsscreen_descr platinumfb_defaultscreen = {
"default",
0, 0,
NULL,
8, 16,
WSSCREEN_WSCOLORS | WSSCREEN_HILIT,
NULL,
};
const struct wsscreen_descr *_platinumfb_scrlist[] = {
&platinumfb_defaultscreen,
/* XXX other formats, graphics screen? */
};
struct wsscreen_list platinumfb_screenlist = {
sizeof(_platinumfb_scrlist) / sizeof(struct wsscreen_descr *),
_platinumfb_scrlist
};
struct wsdisplay_accessops platinumfb_accessops = {
platinumfb_ioctl,
platinumfb_mmap,
NULL,
NULL,
NULL,
NULL, /* load_font */
NULL, /* polls */
NULL, /* scroll */
};
static inline void
platinumfb_write_reg(struct platinumfb_softc *sc, int reg, uint32_t val)
{
out32(sc->sc_reg + PLATINUM_REG_OFFSET_ADDR(reg), val);
}
#ifdef notyet
static inline uint32_t
platinumfb_read_reg(struct platinumfb_softc *sc, int reg)
{
return in32(sc->sc_reg + PLATINUM_REG_OFFSET_ADDR(reg));
}
#endif
static inline void
platinumfb_write_cmap_reg(struct platinumfb_softc *sc,
int reg_offset, uint8_t val)
{
out8(sc->sc_cmap + reg_offset, val);
}
static inline uint8_t
platinumfb_read_cmap_reg(struct platinumfb_softc *sc, int reg_offset)
{
return in8(sc->sc_cmap + reg_offset);
}
static inline void
platinumfb_store_d2(struct platinumfb_softc *sc,
uint8_t a, uint8_t d)
{
platinumfb_write_cmap_reg(sc, PLATINUM_CMAP_ADDR_OFFSET, a + 32);
platinumfb_write_cmap_reg(sc, PLATINUM_CMAP_D2_OFFSET, d);
}
static void
platinumfb_putpalreg(struct platinumfb_softc *sc,
uint8_t reg, uint8_t r, uint8_t g, uint8_t b)
{
platinumfb_write_cmap_reg(sc, PLATINUM_CMAP_ADDR_OFFSET, reg);
platinumfb_write_cmap_reg(sc, PLATINUM_CMAP_LUT_OFFSET, r);
platinumfb_write_cmap_reg(sc, PLATINUM_CMAP_LUT_OFFSET, g);
platinumfb_write_cmap_reg(sc, PLATINUM_CMAP_LUT_OFFSET, b);
}
static uint32_t
platinumfb_line_tweak(struct platinumfb_softc *sc)
{
/* bytes per line adjustment depending on resolution and depth */
if (sc->sc_cmode > PLATINUM_CMODE_8 &&
strcmp(sc->sc_pfs->vmode_name, "832x624x75") == 0)
return 0x10;
else
return 0x20;
}
static paddr_t
platinumfb_page_align_up(struct platinumfb_softc *sc)
{
/* round up framebuffer address to the next highest page */
paddr_t addr = (paddr_t)sc->sc_fb;
paddr_t ret = round_page(addr);
if (ret == addr)
ret = round_page(addr + 1);
return ret;
}
/* 2 versions of platinum clock, older one uses clock[1] and
* freq = 14.3Mhz * c0 / (c1 & 0x1f) / (1 << (c1 >> 5))
* newer one uses clock[0] and
* freq = 15Mhz * c0 / ((c1 & 0x1f) + 2) / (1 << (c1 >> 5))
*/
static void
platinumfb_set_clock(struct platinumfb_softc *sc)
{
uint8_t clk_idx = sc->sc_dac_type == PLATINUM_DAC_1 ? 1 : 0;
uint8_t d2;
platinumfb_store_d2(sc, 6, 0xc6);
platinumfb_write_cmap_reg(sc, PLATINUM_CMAP_ADDR_OFFSET, 3+32);
d2 = platinumfb_read_cmap_reg(sc, PLATINUM_CMAP_D2_OFFSET);
if (d2 == 2) {
platinumfb_store_d2(sc, 7, sc->sc_pfs->clock_params[clk_idx][0]);
platinumfb_store_d2(sc, 8, sc->sc_pfs->clock_params[clk_idx][1]);
platinumfb_store_d2(sc, 3, 3);
} else {
platinumfb_store_d2(sc, 4, sc->sc_pfs->clock_params[clk_idx][0]);
platinumfb_store_d2(sc, 5, sc->sc_pfs->clock_params[clk_idx][1]);
platinumfb_store_d2(sc, 3, 2);
}
delay(5000);
platinumfb_store_d2(sc, 9, 0xa6);
}
static void
platinumfb_dac_type(struct platinumfb_softc *sc)
{
uint8_t dtype = 0;
platinumfb_write_cmap_reg(sc, PLATINUM_CMAP_ADDR_OFFSET, 0x40);
dtype = platinumfb_read_cmap_reg(sc, PLATINUM_CMAP_D2_OFFSET);
switch (dtype) {
case PLATINUM_DAC_0:
case PLATINUM_DAC_1:
/* do nothing */
break;
default:
aprint_error_dev(sc->sc_dev, "unknown dac 0x%x, using 0x%x\n",
dtype, PLATINUM_DAC_0);
dtype = PLATINUM_DAC_0;
break;
}
/* save type */
sc->sc_dac_type = dtype;
}
static void
platinumfb_memory_size(struct platinumfb_softc *sc)
{
int i;
off_t offset = PLATINUM_FB_BANK_SIZE;
paddr_t total_vram = PLATINUM_FB_MIN_SIZE;
uint8_t test_val[] = {0x34, 0x56, 0x78};
uint8_t bank[] = {0, 0, 0};
uint8_t num_elems = sizeof(test_val)/sizeof(test_val[0]);
volatile uint8_t *fbuffer = mapiodev((paddr_t)sc->sc_fb, sc->sc_fb_size, false);
if (fbuffer == NULL)
panic("platinumfb could not mapiodev");
/* turn on all banks of RAM */
platinumfb_write_reg(sc, 16, (paddr_t)sc->sc_fb);
platinumfb_write_reg(sc, 20, 0x1011);
platinumfb_write_reg(sc, 24, 0);
/*
* write "unique" value to each bank of memory and read value
* back. if match assumes VRAM bank exists. On the powermac 7200,
* bank0 is always there and soldered to motherboard, don't know
* if that is the case for others
*/
for (i = 0 ; i < num_elems; i++) {
out8(fbuffer + offset, test_val[i]);
out8(fbuffer + offset + 0x8, 0x0);
__asm volatile ("eieio; dcbf 0,%0"::"r"(&fbuffer[offset]):"memory");
bank[i] = fbuffer[offset] == test_val[i];
total_vram += bank[i] * PLATINUM_FB_BANK_SIZE;
offset += PLATINUM_FB_BANK_SIZE;
}
/* save total vram or minimum */
if (total_vram >= PLATINUM_FB_MIN_SIZE && total_vram <= PLATINUM_FB_MAX_SIZE) {
sc->sc_vram = total_vram;
} else {
aprint_error_dev(sc->sc_dev,
"invalid VRAM size 0x%lx, using min 0x%x\n",
total_vram, PLATINUM_FB_MIN_SIZE);
sc->sc_vram = PLATINUM_FB_MIN_SIZE;
}
unmapiodev((paddr_t)fbuffer, sc->sc_fb_size);
}
static int
platinumfb_match(device_t parent, cfdata_t cf, void *aux)
{
struct confargs *ca = aux;
return (strcmp(ca->ca_name, "platinum") == 0);
}
static void
platinumfb_attach(device_t parent, device_t self, void *aux)
{
struct platinumfb_softc *sc = device_private(self);
struct confargs *ca = aux;
u_int *reg = ca->ca_reg;
sc->sc_dev = self;
sc->sc_node = ca->ca_node;
sc->sc_reg = (uint8_t *)reg[0];
sc->sc_reg_size = reg[1];
sc->sc_fb = (uint8_t *)reg[2];
sc->sc_fb_size = PLATINUM_FB_MAX_SIZE;
sc->sc_cmap = (uint8_t *)PLATINUM_CMAP_BASE_ADDR;
sc->sc_cmap_size = PLATINUM_CMAP_SIZE;
aprint_normal(" reg-addr 0x%08lx fb-addr 0x%08lx cmap-addr 0x%08lx\n",
(paddr_t)sc->sc_reg,
(paddr_t)sc->sc_fb,
(paddr_t)sc->sc_cmap);
config_finalize_register(sc->sc_dev, platinumfb_init);
}
static void
platinumfb_init_cmap(struct platinumfb_softc *sc)
{
int i;
uint8_t tmp;
switch (sc->sc_cmode) {
case PLATINUM_CMODE_8:
default:
/* R3G3B2 colormap */
for (i = 0; i < 256; i++) {
tmp = i & 0xe0;
/*
* replicate bits so 0xe0 maps to a red value of 0xff
* in order to make white look actually white
*/
tmp |= (tmp >> 3) | (tmp >> 6);
sc->sc_cmap_red[i] = tmp;
tmp = (i & 0x1c) << 3;
tmp |= (tmp >> 3) | (tmp >> 6);
sc->sc_cmap_green[i] = tmp;
tmp = (i & 0x03) << 6;
tmp |= tmp >> 2;
tmp |= tmp >> 4;
sc->sc_cmap_blue[i] = tmp;
}
break;
case PLATINUM_CMODE_16:
for (i = 0; i < 32; i++) {
tmp = 255 * i / 32;
sc->sc_cmap_red[i] = tmp;
sc->sc_cmap_green[i] = tmp;
sc->sc_cmap_blue[i] = tmp;
}
for (i = 32; i < 256; i++) {
sc->sc_cmap_red[i] = 0;
sc->sc_cmap_blue[i] = 0;
sc->sc_cmap_green[i] = 0;
}
break;
case PLATINUM_CMODE_32:
for (i = 0; i < 256; i++) {
sc->sc_cmap_red[i] = i;
sc->sc_cmap_green[i] = i;
sc->sc_cmap_blue[i] = i;
}
break;
}
}
static void
platinumfb_restore_palette(struct platinumfb_softc *sc)
{
int i;
for (i = 0; i < 256; i++) {
platinumfb_putpalreg(sc, i, sc->sc_cmap_red[i],
sc->sc_cmap_green[i], sc->sc_cmap_blue[i]);
}
}
static int
platinumfb_init(device_t self)
{
struct platinumfb_softc *sc = device_private(self);
const struct videomode *mode = NULL;
struct rasops_info *ri;
struct wsemuldisplaydev_attach_args aa;
bool is_console = FALSE;
long defattr;
int i;
/*
* become console if OF variable "output-device" contains "platinum",
* since normal OF video variables are unavailable
*/
int options;
char output_device[128];
options = OF_finddevice("/options");
if (options == 0 ||
options == -1 ||
OF_getprop(options, "output-device", output_device,
sizeof(output_device)) == 0 ) {
aprint_error_dev(sc->sc_dev,
"could not get output-device prop, assuming not console\n");
} else {
if (strstr(output_device,"platinum")) {
is_console = TRUE;
}
}
sc->sc_pfs = NULL;
sc->sc_mode = WSDISPLAYIO_MODE_EMUL;
sc->sc_on = WSDISPLAYIO_VIDEO_ON;
/* determine vram memory and dac clock type */
platinumfb_memory_size(sc);
platinumfb_dac_type(sc);
aprint_normal_dev(sc->sc_dev,"is_console %d dac 0x%x vram 0x%x\n",
is_console, sc->sc_dac_type, sc->sc_vram);
for (i=0; i < sizeof(pfb_setting)/sizeof(pfb_setting[0]); i++) {
if (strcmp(PLATINUM_FB_VMODE, pfb_setting[i]->vmode_name)==0) {
mode = pick_mode_by_ref(pfb_setting[i]->width,
pfb_setting[i]->height,
pfb_setting[i]->freq);
break;
}
}
if (!mode) {
aprint_error_dev(sc->sc_dev,
"pick_mode_by_ref failed, using default\n");
mode = pick_mode_by_ref(800, 600, 75);
}
if (platinumfb_set_mode(sc, mode, PLATINUM_CONSOLE_DEPTH) != 0) {
aprint_error_dev(sc->sc_dev, "platinumfb_set_mode failed\n");
return 0;
}
vcons_init(&sc->vd, sc, &platinumfb_defaultscreen,
&platinumfb_accessops);
sc->vd.init_screen = platinumfb_init_screen;
ri = &platinumfb_console_screen.scr_ri;
vcons_init_screen(&sc->vd, &platinumfb_console_screen, 1, &defattr);
platinumfb_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC;
platinumfb_defaultscreen.textops = &ri->ri_ops;
platinumfb_defaultscreen.capabilities = ri->ri_caps;
platinumfb_defaultscreen.nrows = ri->ri_rows;
platinumfb_defaultscreen.ncols = ri->ri_cols;
if (is_console) {
wsdisplay_cnattach(&platinumfb_defaultscreen, ri, 0, 0,
defattr);
vcons_replay_msgbuf(&platinumfb_console_screen);
}
aa.console = is_console;
aa.scrdata = &platinumfb_screenlist;
aa.accessops = &platinumfb_accessops;
aa.accesscookie = &sc->vd;
config_found(self, &aa, wsemuldisplaydevprint, CFARGS_NONE);
return 0;
}
static void
platinumfb_set_hardware(struct platinumfb_softc *sc)
{
int i;
bool one_bank = sc->sc_vram == PLATINUM_FB_BANK_SIZE;
/* now start programming the chip */
platinumfb_write_reg(sc, 24, 7); /* turn off display */
for (i = 0; i < 26; ++i)
platinumfb_write_reg(sc, i+32, sc->sc_pfs->regs[i]);
platinumfb_write_reg(sc, 26+32, one_bank ?
sc->sc_pfs->offset[sc->sc_cmode] + 4 - sc->sc_cmode :
sc->sc_pfs->offset[sc->sc_cmode]);
/*
* reg 16 apparently needs an address 0x10 less the where frame
* buffer/ri_bits start for console text to be aligned. In
* addition, X memory maps (mmap) the frame buffer starting on
* page boundaries. So to get both X and console text aligned we
* start at the first page up from sc_fb[0]. Starting at sc_fb[0]
* did work on my machine but not sure if this negative offset
* would be problematic elsewhere.
*
* Not sure why linux used different fb offsets for each mode, as
* any addresses seemed to work as long as relative difference was
* 0x10.
*/
platinumfb_write_reg(sc, 16, platinumfb_page_align_up(sc) - 0x10);
platinumfb_write_reg(sc, 18, sc->sc_pfs->pitch[sc->sc_cmode]);
/*
* XXX register 19 setting looks wrong for 1 bank & 32 bpp.
* 512x384 is only resolution that would use such a setting, but
* that is not currently in videomodes.c
*/
if (sc->sc_cmode == PLATINUM_CMODE_32 &&
(sc->sc_pfs->macmode == 1 || sc->sc_pfs->macmode == 2))
aprint_error_dev(sc->sc_dev,
"platinumfb reg19 array out-of-bounds");
platinumfb_write_reg(sc, 19, one_bank ?
sc->sc_pfs->mode[sc->sc_cmode+1] : /* XXX fix this for 32 bpp */
sc->sc_pfs->mode[sc->sc_cmode]);
platinumfb_write_reg(sc, 20, one_bank ? 0x11 : 0x1011);
platinumfb_write_reg(sc, 21, 0x100);
platinumfb_write_reg(sc, 22, 1);
platinumfb_write_reg(sc, 23, 1);
platinumfb_write_reg(sc, 26, 0xc00);
platinumfb_write_reg(sc, 27, 0x235);
/* platinumfb_write_reg(sc, 27, 0x2aa); */
platinumfb_store_d2(sc, 0,
one_bank ? sc->sc_pfs->dacula_ctrl[sc->sc_cmode] & 0xf :
sc->sc_pfs->dacula_ctrl[sc->sc_cmode]);
platinumfb_store_d2(sc, 1, 4);
platinumfb_store_d2(sc, 2, 0);
platinumfb_set_clock(sc);
platinumfb_write_reg(sc, 24, 0); /* turn display on */
}
static int
platinumfb_set_mode(struct platinumfb_softc *sc,
const struct videomode *mode, int depth)
{
int i;
/* first find the parameter for the mode register */
i = 0;
while((i < __arraycount(pfb_setting)) &&
(strcmp(mode->name, pfb_setting[i]->vmode_name) != 0))
i++;
if (i >= __arraycount(pfb_setting)) {
aprint_error_dev(sc->sc_dev,
"Can't find a mode register value for %s\n",
mode->name);
return EINVAL;
}
/* found a mode */
sc->sc_pfs = pfb_setting[i];
/* determine depth settings */
switch (depth) {
case 8:
default:
sc->sc_depth = 8;
sc->sc_cmode = PLATINUM_CMODE_8;
break;
case 15:
case 16:
/* 15 bpp but use 16 so X/wsfb works */
sc->sc_depth = 16;
sc->sc_cmode = PLATINUM_CMODE_16;
break;
case 24:
case 32:
/* 24 bpp but use 32 so X/wsfb works */
sc->sc_depth = 32;
sc->sc_cmode = PLATINUM_CMODE_32;
break;
}
sc->sc_modereg = sc->sc_pfs->macmode;
sc->sc_videomode = mode;
sc->sc_height = mode->vdisplay;
sc->sc_width = mode->hdisplay;
sc->sc_linebytes = sc->sc_width * (1 << sc->sc_cmode) + platinumfb_line_tweak(sc);
/* check if we have enough video memory */
if (sc->sc_height * sc->sc_linebytes > sc->sc_vram - PAGE_SIZE) {
aprint_error_dev(sc->sc_dev, "Not enough video RAM for %s\n",
mode->name);
return EINVAL;
}
/* set up and write colormap */
platinumfb_init_cmap(sc);
platinumfb_restore_palette(sc);
/* set hardware registers */
platinumfb_set_hardware(sc);
aprint_normal_dev(sc->sc_dev, "switched to %s in %d bit color\n",
sc->sc_pfs->vmode_name, sc->sc_depth);
return 0;
}
static int
platinumfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag,
struct lwp *l)
{
struct vcons_data *vd = v;
struct platinumfb_softc *sc = vd->cookie;
struct wsdisplay_fbinfo *wdf;
struct vcons_screen *ms = vd->active;
int i;
switch (cmd) {
case WSDISPLAYIO_GTYPE:
*(u_int *)data = WSDISPLAY_TYPE_PLATINUM;
return 0;
case WSDISPLAYIO_GINFO:
wdf = (void *)data;
wdf->height = ms->scr_ri.ri_height;
wdf->width = ms->scr_ri.ri_width;
wdf->depth = ms->scr_ri.ri_depth;
wdf->cmsize = 256;
return 0;
case WSDISPLAYIO_GVIDEO:
*(int *)data = sc->sc_on;
return 0;
case WSDISPLAYIO_SVIDEO:
/*
* poor man's screen blanking, just write zeros to colormap
* registers but don't save in softc.
*/
if (*(int *)data != sc->sc_on) {
sc->sc_on = (sc->sc_on == WSDISPLAYIO_VIDEO_ON ?
WSDISPLAYIO_VIDEO_OFF : WSDISPLAYIO_VIDEO_ON);
/* XXX need to lock colormap? */
if (sc->sc_on == WSDISPLAYIO_VIDEO_OFF) {
for (i=0; i < 256; i++)
platinumfb_putpalreg(sc, i, 0, 0, 0);
} else {
platinumfb_restore_palette(sc);
}
}
return 0;
case WSDISPLAYIO_GETCMAP:
if (sc->sc_cmode == PLATINUM_CMODE_8) {
return platinumfb_getcmap(sc,
(struct wsdisplay_cmap *)data);
} else
return 0;
case WSDISPLAYIO_PUTCMAP:
if (sc->sc_cmode == PLATINUM_CMODE_8) {
return platinumfb_putcmap(sc,
(struct wsdisplay_cmap *)data);
} else
return 0;
case WSDISPLAYIO_SMODE: {
int new_mode = *(int*)data;
if (new_mode != sc->sc_mode) {
int new_depth = new_mode == WSDISPLAYIO_MODE_EMUL ?
PLATINUM_CONSOLE_DEPTH : PLATINUM_FB_DEPTH;
switch(new_mode) {
/*
* XXX - not sure how this is supposed to work for
* switching bpp between console and X, but cases with
* (EMUL MAPPED) or (EMUL MAPPED DUMBFB) work, but
* (EMUL DUMBFB) garbles screen for some reason.
*/
case WSDISPLAYIO_MODE_EMUL:
case WSDISPLAYIO_MODE_MAPPED:
/* case WSDISPLAYIO_MODE_DUMBFB: XXX */
/* in case screen is "blanked" */
platinumfb_restore_palette(sc);
sc->sc_mode = new_mode;
platinumfb_set_mode(sc, sc->sc_videomode, new_depth);
platinumfb_set_rasops(sc, &ms->scr_ri, true);
if (new_mode == WSDISPLAYIO_MODE_EMUL)
vcons_redraw_screen(ms);
}
}
return 0;
}
case WSDISPLAYIO_LINEBYTES:
*(u_int *)data = sc->sc_linebytes;
return 0;
case WSDISPLAYIO_GET_FBINFO: {
struct wsdisplayio_fbinfo *fbi = data;
return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi);
}
}
return EPASSTHROUGH;
}
static paddr_t
platinumfb_mmap(void *v, void *vs, off_t offset, int prot)
{
struct vcons_data *vd = v;
struct platinumfb_softc *sc = vd->cookie;
paddr_t pa = -1;
paddr_t fb_aligned = platinumfb_page_align_up(sc);
paddr_t fb_vram = sc->sc_vram - (fb_aligned - (paddr_t)sc->sc_fb);
/* XXX need to worry about superuser or mapping other registers? */
if (offset >= 0 && offset < fb_vram)
pa = fb_aligned + offset;
return pa;
}
static void platinumfb_set_rasops(struct platinumfb_softc *sc,
struct rasops_info *ri,
int existing)
{
memset(ri, 0, sizeof(struct rasops_info));
ri->ri_depth = sc->sc_depth;
ri->ri_width = sc->sc_width;
ri->ri_height = sc->sc_height;
ri->ri_stride = sc->sc_linebytes;
ri->ri_bits = (u_char*)platinumfb_page_align_up(sc);
ri->ri_flg = RI_FULLCLEAR;
if (existing)
ri->ri_flg |= RI_CLEAR;
switch (sc->sc_cmode) {
case PLATINUM_CMODE_8:
default:
ri->ri_flg |= RI_ENABLE_ALPHA | RI_8BIT_IS_RGB;
break;
case PLATINUM_CMODE_16:
if (strcmp(sc->sc_pfs->vmode_name, "640x480x60") == 0 ||
strcmp(sc->sc_pfs->vmode_name, "800x600x75") == 0 )
ri->ri_flg |= RI_ENABLE_ALPHA;
ri->ri_rnum = 5;
ri->ri_rpos = 10;
ri->ri_gnum = 5;
ri->ri_gpos = 5;
ri->ri_bnum = 5;
ri->ri_bpos = 0;
break;
case PLATINUM_CMODE_32:
if (strcmp(sc->sc_pfs->vmode_name, "640x480x60") == 0 ||
strcmp(sc->sc_pfs->vmode_name, "800x600x75") == 0 )
ri->ri_flg |= RI_ENABLE_ALPHA;
ri->ri_rnum = 8;
ri->ri_rpos = 16;
ri->ri_gnum = 8;
ri->ri_gpos = 8;
ri->ri_bnum = 8;
ri->ri_bpos = 0;
break;
}
rasops_init(ri, 0, 0);
ri->ri_caps = WSSCREEN_WSCOLORS;
rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight,
sc->sc_width / ri->ri_font->fontwidth);
}
static void
platinumfb_init_screen(void *cookie, struct vcons_screen *scr,
int existing, long *defattr)
{
struct platinumfb_softc *sc = cookie;
struct rasops_info *ri = &scr->scr_ri;
scr->scr_flags |= VCONS_DONT_READ;
platinumfb_set_rasops(sc, ri, existing);
ri->ri_hw = scr;
}
static int
platinumfb_putcmap(struct platinumfb_softc *sc, struct wsdisplay_cmap *cm)
{
u_char *r, *g, *b;
u_int index = cm->index;
u_int count = cm->count;
int i, error;
u_char rbuf[256], gbuf[256], bbuf[256];
if (cm->index >= 256 || cm->count > 256 ||
(cm->index + cm->count) > 256)
return EINVAL;
error = copyin(cm->red, &rbuf[index], count);
if (error)
return error;
error = copyin(cm->green, &gbuf[index], count);
if (error)
return error;
error = copyin(cm->blue, &bbuf[index], count);
if (error)
return error;
memcpy(&sc->sc_cmap_red[index], &rbuf[index], count);
memcpy(&sc->sc_cmap_green[index], &gbuf[index], count);
memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count);
/* write colormap registers if not currently blanked */
if (sc->sc_on == WSDISPLAYIO_VIDEO_ON) {
r = &sc->sc_cmap_red[index];
g = &sc->sc_cmap_green[index];
b = &sc->sc_cmap_blue[index];
for (i = 0; i < count; i++) {
platinumfb_putpalreg(sc, index, *r, *g, *b);
index++;
r++, g++, b++;
}
}
return 0;
}
static int
platinumfb_getcmap(struct platinumfb_softc *sc, struct wsdisplay_cmap *cm)
{
u_int index = cm->index;
u_int count = cm->count;
int error;
if (index >= 255 || count > 256 || index + count > 256)
return EINVAL;
error = copyout(&sc->sc_cmap_red[index], cm->red, count);
if (error)
return error;
error = copyout(&sc->sc_cmap_green[index], cm->green, count);
if (error)
return error;
error = copyout(&sc->sc_cmap_blue[index], cm->blue, count);
if (error)
return error;
return 0;
}
