diff options
Diffstat (limited to 'src/mainboard/google/link/i915.c')
| -rw-r--r-- | src/mainboard/google/link/i915.c | 207 |
1 files changed, 148 insertions, 59 deletions
diff --git a/src/mainboard/google/link/i915.c b/src/mainboard/google/link/i915.c index 1c82e178d4..f36c85f8d9 100644 --- a/src/mainboard/google/link/i915.c +++ b/src/mainboard/google/link/i915.c @@ -19,6 +19,7 @@ #include <types.h> #include <string.h> +#include <stdlib.h> #include <device/device.h> #include <device/device.h> #include <device/pci_def.h> @@ -62,18 +63,29 @@ extern int oprom_is_loaded; #define READ32(addr) io_i915_READ32(addr) #define WRITE32(val, addr) io_i915_WRITE32(val, addr) +static char *regname(unsigned long addr) +{ + static char name[16]; + sprintf(name, "0x%lx", addr); + return name; +} + unsigned long io_i915_READ32(unsigned long addr) { - unsigned long val; - outl(addr, addrport); - val = inl(dataport); - return val; + unsigned long val; + outl(addr, addrport); + val = inl(dataport); + if (verbose & vio) + printk(BIOS_SPEW, "%s: Got %08lx\n", regname(addr), val); + return val; } void io_i915_WRITE32(unsigned long val, unsigned long addr) { - outl(addr, addrport); - outl(val, dataport); + if (verbose & vio) + printk(BIOS_SPEW, "%s: outl %08lx\n", regname(addr), val); + outl(addr, addrport); + outl(val, dataport); } @@ -101,13 +113,6 @@ setgtt(int start, int end, unsigned long base, int inc) } } -static char *regname(unsigned long addr) -{ - static char name[16]; - sprintf(name, "0x%lx", addr); - return name; -} - static unsigned long tickspermicrosecond = 1795; static unsigned long long globalstart; @@ -125,6 +130,7 @@ static unsigned long globalmicroseconds(void) } extern struct iodef iodefs[]; +extern int niodefs; static int i915_init_done = 0; @@ -134,11 +140,7 @@ static void palette(void) int i; unsigned long color = 0; - for (i = 0; i < 256; i++, color += 0x010101){ - if (verbose & vio)printk(BIOS_SPEW, - "_LGC_PALETTE_A+%08x: outl %08lx\n", - i<<2, color); - + for(i = 0; i < 256; i++, color += 0x010101){ io_i915_WRITE32(color, _LGC_PALETTE_A + (i<<2)); } } @@ -169,31 +171,15 @@ void fill_lb_framebuffer(struct lb_framebuffer *framebuffer) } -int i915lightup(unsigned int physbase, unsigned int iobase, unsigned int mmio, - unsigned int gfx); +static unsigned long times[4096]; -int i915lightup(unsigned int pphysbase, - unsigned int piobase, - unsigned int pmmio, - unsigned int pgfx) +static int run(int index) { int i, prev = 0; struct iodef *id, *lastidread = 0; unsigned long u, t; - static unsigned long times[4096]; - mmio = (void *)pmmio; - addrport = piobase; - dataport = addrport + 4; - physbase = pphysbase; - graphics = pgfx; - printk(BIOS_SPEW, - "i915lightup: graphics %p mmio %p" - "addrport %04x physbase %08x\n", - (void *)graphics, mmio, addrport, physbase); - globalstart = rdtscll(); - /* state machine! */ - for (i = 0, id = iodefs; id->op; i++, id++){ + for(i = index, id = &iodefs[i]; id->op; i++, id++){ switch(id->op){ case M: if (verbose & vmsg) printk(BIOS_SPEW, "%ld: %s\n", @@ -204,8 +190,8 @@ int i915lightup(unsigned int pphysbase, break; case R: u = READ32(id->addr); - if (verbose & vio)printk(BIOS_SPEW, "%s: Got %08lx, expect %08lx\n", - regname(id->addr), u, id->data); + if (verbose & vio) + printk(BIOS_SPEW, "\texpect %08lx\n", id->data); /* we're looking for something. */ if (lastidread->addr == id->addr){ /* they're going to be polling. @@ -222,14 +208,16 @@ int i915lightup(unsigned int pphysbase, lastidread = id; break; case W: - if (verbose & vio)printk(BIOS_SPEW, "%s: outl %08lx\n", regname(id->addr), - id->data); WRITE32(id->data, id->addr); if (id->addr == PCH_PP_CONTROL){ + if (verbose & vio) + printk(BIOS_SPEW, "PCH_PP_CONTROL\n"); switch(id->data & 0xf){ case 8: break; case 7: break; default: udelay(100000); + if (verbose & vio) + printk(BIOS_SPEW, "U %d\n", 100000); } } break; @@ -240,8 +228,11 @@ int i915lightup(unsigned int pphysbase, } else { verbose = prev; } + printk(BIOS_SPEW, "Change verbosity to %d\n", verbose); break; case I: + printk(BIOS_SPEW, "run: return %d\n", i+1); + return i+1; break; default: printk(BIOS_SPEW, "BAD TABLE, opcode %d @ %d\n", id->op, i); @@ -249,27 +240,125 @@ int i915lightup(unsigned int pphysbase, } if (id->udelay) udelay(id->udelay); - times[i] = globalmicroseconds(); - } - /* optional, we don't even want to take timestamp overhead - * if we can avoid it. */ - if (0) - for (i = 0, id = iodefs; id->op; i++, id++){ - switch(id->op){ - case R: - printk(BIOS_SPEW, "%ld: R %08lx\n", times[i], id->addr); - break; - case W: - printk(BIOS_SPEW, "%ld: W %08lx %08lx\n", times[i], - id->addr, id->data); - break; - } + if (i < ARRAY_SIZE(times)) + times[i] = globalmicroseconds(); } + printk(BIOS_SPEW, "run: return %d\n", i); + return i+1; +} + +int i915lightup(unsigned int physbase, unsigned int iobase, unsigned int mmio, + unsigned int gfx); + +int i915lightup(unsigned int pphysbase, unsigned int piobase, + unsigned int pmmio, unsigned int pgfx) +{ + int index; + u32 auxin[16], auxout[16]; + mmio = (void *)pmmio; + addrport = piobase; + dataport = addrport + 4; + physbase = pphysbase; + graphics = pgfx; + printk(BIOS_SPEW, + "i915lightup: graphics %p mmio %p" + "addrport %04x physbase %08x\n", + (void *)graphics, mmio, addrport, physbase); + globalstart = rdtscll(); + + printk(BIOS_SPEW, "Table has %d elements\n", niodefs); + index = run(0); + printk(BIOS_SPEW, "Run returns %d\n", index); + auxout[0] = 1<<31 /* dp */|0x1<<28/*R*/|DP_DPCD_REV<<8|0xe; + intel_dp_aux_ch(DPA_AUX_CH_CTL, DPA_AUX_CH_DATA1, auxout, 4, auxin, 14); + auxout[0] = 0<<31 /* i2c */|1<<30|0x0<<28/*W*/|0x0<<8|0x0; + intel_dp_aux_ch(DPA_AUX_CH_CTL, DPA_AUX_CH_DATA1, auxout, 3, auxin, 0); + index = run(index); + printk(BIOS_SPEW, "Run returns %d\n", index); + auxout[0] = 0<<31 /* i2c */|0<<30|0x0<<28/*W*/|0x0<<8|0x0; + intel_dp_aux_ch(DPA_AUX_CH_CTL, DPA_AUX_CH_DATA1, auxout, 3, auxin, 0); + index = run(index); + printk(BIOS_SPEW, "Run returns %d\n", index); + auxout[0] = 1<<31 /* dp */|0x0<<28/*W*/|DP_SET_POWER<<8|0x0; + auxout[1] = 0x01000000; + /* DP_SET_POWER_D0 | DP_PSR_SINK_INACTIVE */ + intel_dp_aux_ch(DPA_AUX_CH_CTL, DPA_AUX_CH_DATA1, auxout, 5, auxin, 0); + index = run(index); + auxout[0] = 1<<31 /* dp */|0x0<<28/*W*/|DP_LINK_BW_SET<<8|0x8; + auxout[1] = 0x0a840000; + /*( DP_LINK_BW_2_7 &0xa)|0x0000840a*/ + auxout[2] = 0x00000000; + auxout[3] = 0x01000000; + intel_dp_aux_ch(DPA_AUX_CH_CTL, DPA_AUX_CH_DATA1, auxout, 13, auxin, 0); + index = run(index); + auxout[0] = 1<<31 /* dp */|0x0<<28/*W*/|DP_TRAINING_PATTERN_SET<<8|0x0; + auxout[1] = 0x21000000; + /* DP_TRAINING_PATTERN_1 | DP_LINK_SCRAMBLING_DISABLE | + * DP_SYMBOL_ERROR_COUNT_BOTH |0x00000021*/ + intel_dp_aux_ch(DPA_AUX_CH_CTL, DPA_AUX_CH_DATA1, auxout, 5, auxin, 0); + index = run(index); + auxout[0] = 1<<31 /* dp */|0x0<<28/*W*/|DP_TRAINING_LANE0_SET<<8|0x3; + auxout[1] = 0x00000000; + /* DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0 |0x00000000*/ + intel_dp_aux_ch(DPA_AUX_CH_CTL, DPA_AUX_CH_DATA1, auxout, 8, auxin, 0); + index = run(index); + auxout[0] = 1<<31 /* dp */|0x1<<28/*R*/|DP_LANE0_1_STATUS<<8|0x5; + intel_dp_aux_ch(DPA_AUX_CH_CTL, DPA_AUX_CH_DATA1, auxout, 4, auxin, 5); + index = run(index); + auxout[0] = 1<<31 /* dp */|0x0<<28/*W*/|DP_TRAINING_PATTERN_SET<<8|0x0; + auxout[1] = 0x22000000; + /* DP_TRAINING_PATTERN_2 | DP_LINK_SCRAMBLING_DISABLE | + * DP_SYMBOL_ERROR_COUNT_BOTH |0x00000022*/ + intel_dp_aux_ch(DPA_AUX_CH_CTL, DPA_AUX_CH_DATA1, auxout, 5, auxin, 0); + index = run(index); + auxout[0] = 1<<31 /* dp */|0x0<<28/*W*/|DP_TRAINING_LANE0_SET<<8|0x3; + auxout[1] = 0x00000000; + /* DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0 |0x00000000*/ + intel_dp_aux_ch(DPA_AUX_CH_CTL, DPA_AUX_CH_DATA1, auxout, 8, auxin, 0); + index = run(index); + auxout[0] = 1<<31 /* dp */|0x1<<28/*R*/|DP_LANE0_1_STATUS<<8|0x5; + intel_dp_aux_ch(DPA_AUX_CH_CTL, DPA_AUX_CH_DATA1, auxout, 4, auxin, 5); + index = run(index); + auxout[0] = 1<<31 /* dp */|0x0<<28/*W*/|DP_TRAINING_PATTERN_SET<<8|0x0; + auxout[1] = 0x00000000; + /* DP_TRAINING_PATTERN_DISABLE | DP_LINK_QUAL_PATTERN_DISABLE | + * DP_SYMBOL_ERROR_COUNT_BOTH |0x00000000*/ + intel_dp_aux_ch(DPA_AUX_CH_CTL, DPA_AUX_CH_DATA1, auxout, 5, auxin, 0); + index = run(index); - setgtt(0, 4520, physbase, 4096); + if (index != niodefs) + printk(BIOS_ERR, "Left over IO work in i915_lightup" + " -- this is likely a table error. " + "Only %d of %d were done.\n", index, niodefs); + printk(BIOS_SPEW, "DONE startup\n"); + verbose = 0; + /* GTT is the Global Translation Table for the graphics pipeline. + * It is used to translate graphics addresses to physical + * memory addresses. As in the CPU, GTTs map 4K pages. + * There are 32 bits per pixel, or 4 bytes, + * which means 1024 pixels per page. + * There are 4250 GTTs on Link: + * 2650 (X) * 1700 (Y) pixels / 1024 pixels per page. + * The setgtt function adds a further bit of flexibility: + * it allows you to set a range (the first two parameters) to point + * to a physical address (third parameter);the physical address is + * incremented by a count (fourth parameter) for each GTT in the + * range. + * Why do it this way? For ultrafast startup, + * we can point all the GTT entries to point to one page, + * and set that page to 0s: + * memset(physbase, 0, 4096); + * setgtt(0, 4250, physbase, 0); + * this takes about 2 ms, and is a win because zeroing + * the page takes a up to 200 ms. We will be exploiting this + * trick in a later rev of this code. + * This call sets the GTT to point to a linear range of pages + * starting at physbase. + */ + setgtt(0, FRAME_BUFFER_PAGES, physbase, 4096); printk(BIOS_SPEW, "memset %p to 0 for %d bytes\n", - (void *)graphics, 4520*4096); - memset((void *)graphics, 0, 4520*4096); + (void *)graphics, FRAME_BUFFER_BYTES); + memset((void *)graphics, 0, FRAME_BUFFER_BYTES); printk(BIOS_SPEW, "%ld microseconds\n", globalmicroseconds()); i915_init_done = 1; oprom_is_loaded = 1; |