Merge remote-tracking branch 'remotes/rth/tags/pull-pa-20200218' into staging

Fixes for Dino and Artist.

# gpg: Signature made Tue 18 Feb 2020 19:35:09 GMT
# gpg:                using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth/tags/pull-pa-20200218:
  hw/hppa/dino: Do not accept accesses to registers 0x818 and 0x82c
  hw/hppa/dino: Fix bitmask for the PCIROR register
  hw/hppa/dino: Fix reg800_keep_bits overrun (CID 1419387 1419393 1419394)
  hw/hppa/dino: Add comments with register name
  hw/display/artist: Remove dead code (CID 1419388 & 1419389)
  hw/display/artist: Avoid drawing line when nothing to display
  hw/display/artist: Delay some variables initialization
  hw/display/artist: Remove pointless initialization
  hw/display/artist: Move trace event to draw_line()
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

hw/display/artist.c

@@ -558,21 +558,17 @@ static void draw_line(ARTISTState *s, int x1, int y1, int x2, int y2,
                       bool update_start, int skip_pix, int max_pix)
 {
     struct vram_buffer *buf;
-    uint8_t color = artist_get_color(s);
+    uint8_t color;
     int dx, dy, t, e, x, y, incy, diago, horiz;
     bool c1;
     uint8_t *p;
 
+    trace_artist_draw_line(x1, y1, x2, y2);
 
     if (update_start) {
         s->vram_start = (x2 << 16) | y2;
     }
 
-    buf = &s->vram_buffer[ARTIST_BUFFER_AP];
-
-    c1 = false;
-    incy = 1;
-
     if (x2 > x1) {
         dx = x2 - x1;
     } else {
@@ -583,6 +579,11 @@ static void draw_line(ARTISTState *s, int x1, int y1, int x2, int y2,
     } else {
         dy = y1 - y2;
     }
+    if (!dx || !dy) {
+        return;
+    }
+
+    c1 = false;
     if (dy > dx) {
         t = y2;
         y2 = x2;
@@ -620,6 +621,8 @@ static void draw_line(ARTISTState *s, int x1, int y1, int x2, int y2,
     }
     x = x1;
     y = y1;
+    color = artist_get_color(s);
+    buf = &s->vram_buffer[ARTIST_BUFFER_AP];
 
     do {
         if (c1) {
@@ -654,7 +657,6 @@ static void draw_line_pattern_start(ARTISTState *s)
     int endy = artist_get_y(s->blockmove_size);
     int pstart = s->line_pattern_start >> 16;
 
-    trace_artist_draw_line(startx, starty, endx, endy);
     draw_line(s, startx, starty, endx, endy, false, -1, pstart);
     s->line_pattern_skip = pstart;
 }
@@ -668,7 +670,6 @@ static void draw_line_pattern_next(ARTISTState *s)
     int endy = artist_get_y(s->blockmove_size);
     int line_xy = s->line_xy >> 16;
 
-    trace_artist_draw_line(startx, starty, endx, endy);
     draw_line(s, startx, starty, endx, endy, false, s->line_pattern_skip,
               s->line_pattern_skip + line_xy);
     s->line_pattern_skip += line_xy;
@@ -683,7 +684,6 @@ static void draw_line_size(ARTISTState *s, bool update_start)
     int endx = artist_get_x(s->line_size);
     int endy = artist_get_y(s->line_size);
 
-    trace_artist_draw_line(startx, starty, endx, endy);
     draw_line(s, startx, starty, endx, endy, update_start, -1, -1);
 }
 
@@ -734,16 +734,6 @@ static void draw_line_xy(ARTISTState *s, bool update_start)
         endy = 0;
     }
 
-
-    if (endx < 0) {
-        return;
-    }
-
-    if (endy < 0) {
-        return;
-    }
-
-    trace_artist_draw_line(startx, starty, endx, endy);
     draw_line(s, startx, starty, endx, endy, false, -1, -1);
 }
 
@@ -755,7 +745,6 @@ static void draw_line_end(ARTISTState *s, bool update_start)
     int endx = artist_get_x(s->line_end);
     int endy = artist_get_y(s->line_end);
 
-    trace_artist_draw_line(startx, starty, endx, endy);
     draw_line(s, startx, starty, endx, endy, update_start, -1, -1);
 }
 

hw/hppa/dino.c

@@ -83,20 +83,21 @@
 #define DINO_PCI_HOST_BRIDGE(obj) \
     OBJECT_CHECK(DinoState, (obj), TYPE_DINO_PCI_HOST_BRIDGE)
 
-#define DINO800_REGS ((DINO_TLTIM - DINO_GMASK) / 4)
+#define DINO800_REGS (1 + (DINO_TLTIM - DINO_GMASK) / 4)
 static const uint32_t reg800_keep_bits[DINO800_REGS] = {
-            MAKE_64BIT_MASK(0, 1),
-            MAKE_64BIT_MASK(0, 7),
-            MAKE_64BIT_MASK(0, 7),
-            MAKE_64BIT_MASK(0, 8),
-            MAKE_64BIT_MASK(0, 7),
-            MAKE_64BIT_MASK(0, 9),
-            MAKE_64BIT_MASK(0, 32),
-            MAKE_64BIT_MASK(0, 8),
-            MAKE_64BIT_MASK(0, 30),
-            MAKE_64BIT_MASK(0, 25),
-            MAKE_64BIT_MASK(0, 22),
-            MAKE_64BIT_MASK(0, 9),
+    MAKE_64BIT_MASK(0, 1),  /* GMASK */
+    MAKE_64BIT_MASK(0, 7),  /* PAMR */
+    MAKE_64BIT_MASK(0, 7),  /* PAPR */
+    MAKE_64BIT_MASK(0, 8),  /* DAMODE */
+    MAKE_64BIT_MASK(0, 7),  /* PCICMD */
+    MAKE_64BIT_MASK(0, 9),  /* PCISTS */
+    MAKE_64BIT_MASK(0, 32), /* Undefined */
+    MAKE_64BIT_MASK(0, 8),  /* MLTIM */
+    MAKE_64BIT_MASK(0, 30), /* BRDG_FEAT */
+    MAKE_64BIT_MASK(0, 24), /* PCIROR */
+    MAKE_64BIT_MASK(0, 22), /* PCIWOR */
+    MAKE_64BIT_MASK(0, 32), /* Undocumented */
+    MAKE_64BIT_MASK(0, 9),  /* TLTIM */
 };
 
 typedef struct DinoState {
@@ -180,7 +181,9 @@ static bool dino_chip_mem_valid(void *opaque, hwaddr addr,
     case DINO_IO_ADDR_EN:
     case DINO_PCI_IO_DATA:
     case DINO_TOC_ADDR:
-    case DINO_GMASK ... DINO_TLTIM:
+    case DINO_GMASK ... DINO_PCISTS:
+    case DINO_MLTIM ... DINO_PCIWOR:
+    case DINO_TLTIM:
         ret = true;
         break;
     case DINO_PCI_IO_DATA + 2: