Aaron Durbin (adurbin@google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/4907
-gerrit
commit 29819339d5dbb744ad2f81e3563713e9c0f46bbc Author: Duncan Laurie dlaurie@chromium.org Date: Mon Oct 28 15:49:34 2013 -0700
baytrail: Enable GFX device
- Ungate display in PUNIT - Set GSM to 64MB since 32MB is not supported in <C0 stepping - Initialize power management registers in GTT - Execute VBIOS if found
BUG=chrome-os-partner:23507 BRANCH=rambi TEST=build and boot to dev screen via HDMI on rambi
Change-Id: Idb032c7ea7f16b651b4c921e3429a652fe663a5d Signed-off-by: Duncan Laurie dlaurie@chromium.org Reviewed-on: https://chromium-review.googlesource.com/174922 Reviewed-by: Aaron Durbin adurbin@chromium.org Signed-off-by: Aaron Durbin adurbin@chromium.org --- src/soc/intel/baytrail/Makefile.inc | 1 + src/soc/intel/baytrail/baytrail/iosf.h | 3 + src/soc/intel/baytrail/gfx.c | 399 +++++++++++++++++++++++++++++++++ src/soc/intel/baytrail/romstage/gfx.c | 3 +- 4 files changed, 405 insertions(+), 1 deletion(-)
diff --git a/src/soc/intel/baytrail/Makefile.inc b/src/soc/intel/baytrail/Makefile.inc index 11ef5a3..3e62ccf 100644 --- a/src/soc/intel/baytrail/Makefile.inc +++ b/src/soc/intel/baytrail/Makefile.inc @@ -18,6 +18,7 @@ romstage-$(CONFIG_CACHE_MRC_SETTINGS) += mrc_cache.c ramstage-y += spi.c smm-y += spi.c ramstage-y += chip.c +ramstage-y += gfx.c ramstage-y += iosf.c romstage-y += iosf.c ramstage-y += northcluster.c diff --git a/src/soc/intel/baytrail/baytrail/iosf.h b/src/soc/intel/baytrail/baytrail/iosf.h index 497124e..920061f 100644 --- a/src/soc/intel/baytrail/baytrail/iosf.h +++ b/src/soc/intel/baytrail/baytrail/iosf.h @@ -155,5 +155,8 @@ void iosf_punit_write(int reg, uint32_t val); #define BIOS_RESET_CPL 0x05 # define BIOS_RESET_CPL_ALL_DONE (1 << 1) # define BIOS_RESET_CPL_RESET_DONE (1 << 0) +#define PUNIT_PWRGT_CONTROL 0x60 +#define PUNIT_PWRGT_STATUS 0x61 +#define PUNIT_GPU_EC_VIRUS 0xd2
#endif /* _BAYTRAIL_IOSF_H_ */ diff --git a/src/soc/intel/baytrail/gfx.c b/src/soc/intel/baytrail/gfx.c new file mode 100644 index 0000000..09cd662 --- /dev/null +++ b/src/soc/intel/baytrail/gfx.c @@ -0,0 +1,399 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2013 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <arch/io.h> +#include <console/console.h> +#include <delay.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> + +#include <baytrail/gfx.h> +#include <baytrail/iosf.h> +#include <baytrail/pci_devs.h> +#include <baytrail/ramstage.h> + +struct gt_reg { + u32 reg; + u32 andmask; + u32 ormask; +}; + +static const struct gt_reg gfx_powermeter_weights[] = { + /* SET1 */ + { 0xA800, 0xFFFFFFFF, 0x00000000 }, + { 0xA804, 0xFFFFFFFF, 0x00000000 }, + { 0xA808, 0xFFFFFFFF, 0x0000ff0A }, + { 0xA80C, 0xFFFFFFFF, 0x1D000000 }, + { 0xA810, 0xFFFFFFFF, 0xAC004900 }, + { 0xA814, 0xFFFFFFFF, 0x000F0000 }, + { 0xA818, 0xFFFFFFFF, 0x5A000000 }, + { 0xA81C, 0xFFFFFFFF, 0x2600001F }, + { 0xA820, 0xFFFFFFFF, 0x00090000 }, + { 0xA824, 0xFFFFFFFF, 0x2000ff00 }, + { 0xA828, 0xFFFFFFFF, 0xff090016 }, + { 0xA82C, 0xFFFFFFFF, 0x00000000 }, + { 0xA830, 0xFFFFFFFF, 0x00000100 }, + { 0xA834, 0xFFFFFFFF, 0x00A00F51 }, + { 0xA838, 0xFFFFFFFF, 0x000B0000 }, + { 0xA83C, 0xFFFFFFFF, 0xcb7D3307 }, + { 0xA840, 0xFFFFFFFF, 0x003C0000 }, + { 0xA844, 0xFFFFFFFF, 0xFFFF0000 }, + { 0xA848, 0xFFFFFFFF, 0x00220000 }, + { 0xA84c, 0xFFFFFFFF, 0x43000000 }, + { 0xA850, 0xFFFFFFFF, 0x00000800 }, + { 0xA854, 0xFFFFFFFF, 0x00000F00 }, + { 0xA858, 0xFFFFFFFF, 0x00000021 }, + { 0xA85c, 0xFFFFFFFF, 0x00000000 }, + { 0xA860, 0xFFFFFFFF, 0x00190000 }, + { 0xAA80, 0xFFFFFFFF, 0x00FF00FF }, + { 0xAA84, 0xFFFFFFFF, 0x00000000 }, + { 0x1300A4, 0xFFFFFFFF, 0x00000000 }, + + /* SET2 */ + { 0xA900, 0xFFFFFFFF, 0x00000000 }, + { 0xA904, 0xFFFFFFFF, 0x00000000 }, + { 0xA908, 0xFFFFFFFF, 0x00000000 }, + { 0xa90c, 0xFFFFFFFF, 0x1D000000 }, + { 0xa910, 0xFFFFFFFF, 0xAC005000 }, + { 0xa914, 0xFFFFFFFF, 0x000F0000 }, + { 0xa918, 0xFFFFFFFF, 0x5A000000 }, + { 0xa91c, 0xFFFFFFFF, 0x2600001F }, + { 0xa920, 0xFFFFFFFF, 0x00090000 }, + { 0xa924, 0xFFFFFFFF, 0x2000ff00 }, + { 0xa928, 0xFFFFFFFF, 0xff090016 }, + { 0xa92c, 0xFFFFFFFF, 0x00000000 }, + { 0xa930, 0xFFFFFFFF, 0x00000100 }, + { 0xa934, 0xFFFFFFFF, 0x00A00F51 }, + { 0xa938, 0xFFFFFFFF, 0x000B0000 }, + { 0xA93C, 0xFFFFFFFF, 0xcb7D3307 }, + { 0xA940, 0xFFFFFFFF, 0x003C0000 }, + { 0xA944, 0xFFFFFFFF, 0xFFFF0000 }, + { 0xA948, 0xFFFFFFFF, 0x00220000 }, + { 0xA94C, 0xFFFFFFFF, 0x43000000 }, + { 0xA950, 0xFFFFFFFF, 0x00000800 }, + { 0xA954, 0xFFFFFFFF, 0x00000000 }, + { 0xA960, 0xFFFFFFFF, 0x00000000 }, + + /* SET3 */ + { 0xaa3c, 0xFFFFFFFF, 0x00000000 }, + { 0xaa54, 0xFFFFFFFF, 0x00000000 }, + { 0xaa60, 0xFFFFFFFF, 0x00000000 }, + + /* Enable PowerMeter Counters */ + { 0xA248, 0xFFFFFFFF, 0x00000058 }, + + { 0 } +}; + +static const struct gt_reg gfx_rc6_registers[] = { + { 0xA090, 0xFFFFFFFF, 0x00000000 }, + + /* RC1e - RC6/6p - RC6pp Wake Rate Limits */ + { 0xA09C, 0xFFFFFFFF, 0x00280000 }, + { 0xA0A8, 0xFFFFFFFF, 0x0001E848 }, + { 0xA0AC, 0xFFFFFFFF, 0x00000019 }, + + /* RC Sleep / RCx Thresholds */ + { 0xA0B0, 0xFFFFFFFF, 0x00000000 }, + { 0xA0B8, 0xFFFFFFFF, 0x00000557 }, + + { 0 } +}; + +static const struct gt_reg gfx_turbo_registers[] = { + /* Render/Video/Blitter Idle Max Count */ + { 0x2054, 0xFFFFFFFF, 0x0000000A }, + { 0x12054, 0xFFFFFFFF, 0x0000000A }, + { 0x22054, 0xFFFFFFFF, 0x0000000A }, + + /* RP Down Timeout */ + { 0xA010, 0xFFFFFFFF, 0x000F4240 }, + + { 0 } +}; + +static const struct gt_reg gfx_turbo_ctl_registers[] = { + /* RP Up/Down Threshold */ + { 0xA02C, 0xFFFFFFFF, 0x0000E8E8 }, + { 0xA030, 0xFFFFFFFF, 0x0003BD08 }, + + /* RP Up/Down EI */ + { 0xA068, 0xFFFFFFFF, 0x000101D0 }, + { 0xA06C, 0xFFFFFFFF, 0x00055730 }, + + { 0 } +}; + +static struct resource *gtt_res = NULL; + +static inline unsigned long gtt_read(unsigned long reg) +{ + u32 val; + val = read32(gtt_res->base + reg); + return val; + +} + +static inline void gtt_write(unsigned long reg, unsigned long data) +{ + write32(gtt_res->base + reg, data); +} + +static inline void gtt_rmw(u32 reg, u32 andmask, u32 ormask) +{ + u32 val = gtt_read(reg); + val &= andmask; + val |= ormask; + gtt_write(reg, val); +} + +static void gtt_write_regs(const struct gt_reg *gt) +{ + for (; gt && gt->reg; gt++) + gtt_rmw(gt->reg, gt->andmask, gt->ormask); +} + +#define GFX_POLL_RETRY 10000 + +static int gtt_poll(u32 reg, u32 mask, u32 value) +{ + unsigned try = GFX_POLL_RETRY; + u32 data; + + while (try--) { + data = gtt_read(reg); + if ((data & mask) == value) + return 1; + udelay(100); + } + + printk(BIOS_ERR, "GTT timeout\n"); + return 0; +} + +static int gfx_poll_power_gate(u32 mask, u32 value) +{ + unsigned try = GFX_POLL_RETRY; + u32 data; + + while (try--) { + data = iosf_punit_read(PUNIT_PWRGT_STATUS); + if ((data & mask) == value) + return 1; + udelay(100); + } + + printk(BIOS_ERR, "Power Gate timeout\n"); + return 0; +} + +/* + * Lock Power Context Base Register to point to a 24KB block + * of memory in GSM. Power context save data is stored here. + */ +static void gfx_lock_pcbase(device_t dev) +{ + const u16 gms_size_map[17] = { 0,32,64,96,128,160,192,224,256, + 288,320,352,384,416,448,480,512 }; + u32 pcsize = 24 << 10; /* 24KB */ + u32 wopcmsz = 0x100000; /* PAVP offset */ + u32 gms, gmsize, pcbase; + + gms = pci_read_config32(dev, GGC) & GGC_GSM_SIZE_MASK; + gms >>= 3; + if (gms > sizeof(gms_size_map)) + return; + gmsize = gms_size_map[gms]; + + /* PcBase = BDSM + GMS Size - WOPCMSZ - PowerContextSize */ + pcbase = pci_read_config32(dev, GSM_BASE) & 0xfff00000; + pcbase += (gmsize-1) * wopcmsz - pcsize; + pcbase |= 1; /* Lock */ + + gtt_write(0x182120, pcbase); +} + +static void gfx_pm_init(device_t dev) +{ + printk(BIOS_INFO, "GFX: Power Management Init\n"); + + /* + * Allow-Wake render/media wells. + * Used by PUNIT as part of S0IX save/restore. + */ + gtt_rmw(0x130090, ~1, 1); + if (!gtt_poll(0x130094, 1, 1)) { + printk(BIOS_ERR, "gfx_pm_init: Unable to allow-wake\n"); + return; + } + + /* Render Force-Wake */ + gtt_write(0x1300B0, 0x80008000); + if (!gtt_poll(0x1300B4, 0x8000, 0x8000)) { + printk(BIOS_ERR, "gfx_pm_init: Unable to force-wake render\n"); + return; + } + + /* Media Force-Wake */ + gtt_write(0x1300B8, 0x80008000); + if (!gtt_poll(0x1300BC, 0x8000, 0x8000)) { + printk(BIOS_ERR, "gfx_pm_init: Unable to force-wake media\n"); + return; + }; + + /* Workaround - X0:261954/A0:261955 */ + gtt_rmw(0x182060, ~0xf, 1); + + /* Program GT PowerMeter weights */ + gtt_write_regs(gfx_powermeter_weights); + + /* Program PUNIT_GPU_EC_VIRUS based on DPTF SDP */ + /* SDP Profile 4 == 0x11940, others 0xcf08 */ + iosf_punit_write(PUNIT_GPU_EC_VIRUS, 0xcf08); + + /* GfxPause */ + gtt_write(0xa000, 0x00071388); + + /* Dynamic EU Control Settings */ + gtt_write(0xa080, 0x00000004); + + /* Lock ECO Bit Settings */ + gtt_write(0xa180, 0x80000000); + + /* DOP Clock Gating */ + gtt_write(0x9424, 0x00000001); + + /* MBCunit will send the VCR (Fuse) writes as NP-W */ + gtt_rmw(0x907c, 0xfffeffff, 0x00010000); + + /* RC6 Settings */ + gtt_write_regs(gfx_rc6_registers); + + /* Turbo Settings */ + gtt_write_regs(gfx_turbo_registers); + + /* Turbo Control Settings */ + gtt_write_regs(gfx_turbo_ctl_registers); + + /* RP Idle Hysteresis */ + gtt_write(0xa070, 0x0000000a); + + /* HW RC6 Control Settings */ + gtt_write(0xa090, 0x11000000); + + /* RP Control */ + gtt_write(0xa024, 0x00000592); + + /* Enable PM Interrupts */ + gtt_write(0x44024, 0x03000000); + gtt_write(0x4402c, 0x03000076); + gtt_write(0xa168, 0x0000007e); + + /* Lock power context base */ + gfx_lock_pcbase(dev); + + /* Aggressive Clock Gating */ + gtt_write(0x9400, 0); + gtt_write(0x9404, 0); + gtt_write(0x9408, 0); + gtt_write(0x940c, 0); +} + +static void gfx_pre_vbios_init(device_t dev) +{ + /* Display */ + iosf_punit_write(PUNIT_PWRGT_CONTROL, 0xc0); + gfx_poll_power_gate(0xc0, 0xc0); + + /* Tx/Rx Lanes */ + iosf_punit_write(PUNIT_PWRGT_CONTROL, 0xfff0c0); + gfx_poll_power_gate(0xfff0c0, 0xfff0c0); + + /* Common Lane */ + iosf_punit_write(PUNIT_PWRGT_CONTROL, 0xfffcc0); + gfx_poll_power_gate(0xfffcc0, 0xfffcc0); + + /* Ungating Tx only */ + iosf_punit_write(PUNIT_PWRGT_CONTROL, 0xf00cc0); + gfx_poll_power_gate(0xfffcc0, 0xf00cc0); + + /* Ungating Common Lane only */ + iosf_punit_write(PUNIT_PWRGT_CONTROL, 0xf000c0); + gfx_poll_power_gate(0xffffc0, 0xf000c0); + + /* Ungating Display */ + iosf_punit_write(PUNIT_PWRGT_CONTROL, 0xf00000); + gfx_poll_power_gate(0xfffff0, 0xf00000); +} + +static void gfx_post_vbios_init(device_t dev) +{ + /* Deassert Render Force-Wake */ + gtt_write(0x1300B0, 0x80000000); + gtt_poll(0x1300B4, 0x8000, 0); + + /* Deassert Media Force-Wake */ + gtt_write(0x1300B8, 0x80000000); + gtt_poll(0x1300BC, 0x8000, 0); + + /* Set Lock bits */ + pci_write_config32(dev, GGC, pci_read_config32(dev, GGC) | 1); + pci_write_config32(dev, GSM_BASE, pci_read_config32(dev, GSM_BASE) | 1); + pci_write_config32(dev, GTT_BASE, pci_read_config32(dev, GTT_BASE) | 1); +} + +static void gfx_init(device_t dev) +{ + u32 reg32; + + /* Find GTT resource */ + gtt_res = find_resource(dev, PCI_BASE_ADDRESS_0); + if (!gtt_res || !gtt_res->base) + return; + + /* GFX needs to be Bus Master */ + reg32 = pci_read_config32(dev, PCI_COMMAND); + reg32 |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO; + pci_write_config32(dev, PCI_COMMAND, reg32); + + /* Pre VBIOS Init */ + gfx_pre_vbios_init(dev); + gfx_pm_init(dev); + + /* Run VBIOS */ + pci_dev_init(dev); + + /* Post VBIOS Init */ + gfx_post_vbios_init(dev); +} + +static struct device_operations gfx_device_ops = { + .read_resources = pci_dev_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = gfx_init, + .ops_pci = &soc_pci_ops, +}; + +static const struct pci_driver gfx_driver __pci_driver = { + .ops = &gfx_device_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = GFX_DEVID, +}; diff --git a/src/soc/intel/baytrail/romstage/gfx.c b/src/soc/intel/baytrail/romstage/gfx.c index 3b47ccf..592d1fe 100644 --- a/src/soc/intel/baytrail/romstage/gfx.c +++ b/src/soc/intel/baytrail/romstage/gfx.c @@ -37,7 +37,8 @@ void gfx_init(void) msac = pci_read_config8(gfx_dev, MSAC);
ggc &= ~(GGC_GTT_SIZE_MASK | GGC_GSM_SIZE_MASK); - ggc |= GGC_GTT_SIZE_2MB | GGC_GSM_SIZE_32MB; + /* 32MB GSM is not supported with <C0 stepping. */ + ggc |= GGC_GTT_SIZE_2MB | GGC_GSM_SIZE_64MB; /* Enable VGA decoding as well. */ ggc &= ~(GGC_VGA_DISABLE);