@@ -59,6 +59,11 @@
#define PALETTE_BLOCK_COUNT 1 /* One block is used for the indexed colors */
+#define GIF_PACKAGE_TAG(package) ((package)++)->gif.tag = (struct gif_tag)
+#define GIF_PACKAGE_REG(package) ((package)++)->gif.reg = (struct gif_data_reg)
+#define GIF_PACKAGE_AD(package) ((package)++)->gif.packed.ad = (struct gif_packed_ad)
+#define DMA_PACKAGE_TAG(package) ((package)++)->dma = (struct dma_tag)
+
/* Module parameters */
static char *mode_option;
@@ -361,6 +366,194 @@ static u32 display_buffer_size(const u32 xres_virtual, const u32 yres_virtual,
return (xres_virtual * yres_virtual * bits_per_pixel) / 8;
}
+/**
+ * struct environment - Graphics Synthesizer drawing environment context
+ * @xres: x resolution in pixels
+ * @yres: y resolution in pixels
+ * @fbw: frame buffer width in 64-pixel unit
+ * @psm: pixel storage mode
+ * @fbp: frame buffer base pointer in 2048-pixel unit
+ */
+struct environment {
+ u32 xres;
+ u32 yres;
+ u32 fbw;
+ enum gs_psm psm;
+ u32 fbp;
+};
+
+/**
+ * var_to_env - Graphics Synthesizer drawing environment for a given video mode
+ * @var: screen info object
+ * @info: frame buffer info object
+ *
+ * Return: Graphics Synthesizer drawing environment parameters
+ */
+static struct environment var_to_env(const struct fb_var_screeninfo *var,
+ const struct fb_info *info)
+{
+ return (struct environment) {
+ .xres = var->xres,
+ .yres = var->yres,
+ .fbw = var_to_fbw(var),
+ .psm = var_to_psm(var, info)
+ };
+}
+
+/**
+ * package_environment - package drawing environment tags and data for the GIF
+ * @package: DMA buffer to put packages in
+ * @env: drawing environment to package
+ *
+ * Various parameters are used to draw Graphics Synthesizer primitives, for
+ * example texture information and drawing attributes set by the PRIM register.
+ * These parameters are called the drawing environment. The environment remains
+ * in effect for multiple primitives until it is reset.
+ *
+ * Some environment registers such as XYOFFSET_1 and XYOFFSET_2 represent the
+ * same function and can be chosen with the CTXT primitive attribute.
+ *
+ * The following registers are available:
+ *
+ * ============ =============================================================
+ * XYOFFSET_1/2 offset value of vertex coordinates
+ * PRMODECONT PRIM attributes enabled/disabled
+ * TEX0_1/2 attributes of texture buffer and texture mapping
+ * TEX1_1/2 attributes of texture mapping
+ * TEX2_1/2 colour lookup table entry
+ * CLAMP_1/2 wrap mode of texture mapping
+ * TEXCLUT colour lookup table setting
+ * SCANMSK drawing control with y coordinate of pixel
+ * MIPTBP1_1/2 base pointer for MIPMAP on each level
+ * MIPTBP2_1/2 base pointer for MIPMAP on each level
+ * TEXA reference value when expanding alpha value of TEX16 and TEX24
+ * FOGCOL fogging distant color
+ * SCISSOR_1/2 scissoring area
+ * ALPHA_1/2 alpha-blending attributes
+ * DIMX dither matrix
+ * DTHE dithering enabled/disabled
+ * COLCLAMP color clamp/mask
+ * TEST_1/2 pixel operation
+ * PABE alpha-blending in pixel units enabled/disabled
+ * FBA_1/2 alpha correction value
+ * FRAME_1/2 frame buffer setting
+ * ZBUF_1/2 z buffer setting
+ * ============ =============================================================
+ *
+ * Return: number of generated GIF packages in 16-byte unit
+ */
+static size_t package_environment(union package *package,
+ const struct environment env)
+{
+ union package * const base_package = package;
+
+ GIF_PACKAGE_TAG(package) {
+ .flg = gif_packed_mode,
+ .reg0 = gif_reg_ad,
+ .nreg = 1,
+ .nloop = 11
+ };
+ GIF_PACKAGE_AD(package) {
+ .addr = gs_addr_frame_1,
+ .data.frame_1 = {
+ .fbw = env.fbw,
+ .fbp = env.fbp,
+ .psm = env.psm
+ }
+ };
+ GIF_PACKAGE_AD(package) {
+ .addr = gs_addr_xyoffset_1,
+ .data.xyoffset_1 = {
+ .ofx = 0,
+ .ofy = 0,
+ }
+ };
+ GIF_PACKAGE_AD(package) {
+ .addr = gs_addr_scissor_1,
+ .data.scissor_1 = {
+ .scax0 = 0, .scax1 = env.xres,
+ .scay0 = 0, .scay1 = env.yres
+ }
+ };
+ GIF_PACKAGE_AD(package) {
+ .addr = gs_addr_scanmsk,
+ .data.scanmsk = {
+ .msk = gs_scanmsk_normal
+ }
+ };
+ GIF_PACKAGE_AD(package) {
+ .addr = gs_addr_prmode,
+ .data.prmode = { } /* Reset PRMODE to a known value */
+ };
+ GIF_PACKAGE_AD(package) {
+ .addr = gs_addr_prmodecont,
+ .data.prmodecont = {
+ .ac = 1
+ }
+ };
+ GIF_PACKAGE_AD(package) {
+ .addr = gs_addr_test_1,
+ .data.test_1 = {
+ .zte = gs_depth_test_on, /* Must always be ON */
+ .ztst = gs_depth_pass /* Emulate OFF */
+ }
+ };
+ GIF_PACKAGE_AD(package) {
+ .addr = gs_addr_texa,
+ .data.texa = {
+ .ta0 = GS_ALPHA_ONE,
+ .aem = gs_aem_normal,
+ .ta1 = GS_ALPHA_ONE
+ }
+ };
+ GIF_PACKAGE_AD(package) {
+ .addr = gs_addr_tex1_1,
+ .data.tex1 = {
+ .lcm = gs_lcm_fixed,
+ .mmag = gs_lod_nearest,
+ .mmin = gs_lod_nearest,
+ .k = 0
+ }
+ };
+ GIF_PACKAGE_AD(package) {
+ .addr = gs_addr_zbuf_1,
+ .data.zbuf = {
+ .zmsk = gs_zbuf_off
+ }
+ };
+ GIF_PACKAGE_AD(package) {
+ .addr = gs_addr_dthe,
+ .data.dthe = {
+ .dthe = gs_dthe_off
+ }
+ };
+
+ return package - base_package;
+}
+
+/**
+ * write_cb_environment - write console buffer GS drawing environment to the GIF
+ * @info: frame buffer info object
+ *
+ * Write various parameters used to draw Graphics Synthesizer primitives, for
+ * example texture information and drawing attributes set by the PRIM register.
+ * The environment remains in effect for multiple primitives until it is reset.
+ */
+void write_cb_environment(struct fb_info *info)
+{
+ if (gif_wait()) {
+ struct ps2fb_par *par = info->par;
+ union package * const base_package = par->package.buffer;
+ union package *package = base_package;
+
+ package += package_environment(package,
+ var_to_env(&info->var, info));
+
+ gif_write(&base_package->gif, package - base_package);
+ } else
+ fb_err(info, "Failed to write GS environment, GIF is busy\n");
+}
+
/**
* ps2fb_cb_get_tilemax - maximum number of tiles
* @info: frame buffer info object
@@ -889,9 +1082,12 @@ static int ps2fb_cb_set_par(struct fb_info *info)
spin_lock_irqsave(&par->lock, flags);
err = ps2fb_set_par(info);
- if (!err)
+ if (!err) {
par->cb.block_count = var_to_block_count(info);
+ write_cb_environment(info);
+ }
+
spin_unlock_irqrestore(&par->lock, flags);
if (!err && info->tileops)
Various parameters are used to draw Graphics Synthesizer primitives, for example texture information and drawing attributes set by the PRIM register[1]. These parameters are called the drawing environment. The environment remains in effect for multiple primitives until it is reset. Some environment registers such as XYOFFSET_1 and XYOFFSET_2 represent the same function and can be chosen with the CTXT primitive attribute. This driver is currently only using the first drawing environment. References: [1] "GS User's Manual", version 6.0, Sony Computer Entertainment Inc., pp. 47-49. Signed-off-by: Fredrik Noring <noring@nocrew.org> --- drivers/video/fbdev/ps2fb.c | 198 +++++++++++++++++++++++++++++++++++- 1 file changed, 197 insertions(+), 1 deletion(-)