1 files changed, 195 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/fb_gm20b.c b/drivers/gpu/nvgpu/gm20b/fb_gm20b.c
new file mode 100644
index 00000000..1f8cc326
--- /dev/null
+++ b/drivers/gpu/nvgpu/gm20b/fb_gm20b.c
@@ -0,0 +1,195 @@
+/*
+ * GM20B GPC MMU
+ *
+ * Copyright (c) 2014-2017, NVIDIA CORPORATION.  All rights reserved.
+*
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include "gk20a/gk20a.h"
+#include "gk20a/fb_gk20a.h"
+#include "gm20b/fb_gm20b.h"
+
+#include <nvgpu/hw/gm20b/hw_fb_gm20b.h>
+#include <nvgpu/hw/gm20b/hw_top_gm20b.h>
+#include <nvgpu/hw/gm20b/hw_gmmu_gm20b.h>
+#include <nvgpu/hw/gm20b/hw_gr_gm20b.h>
+
+#define VPR_INFO_FETCH_WAIT     (5)
+#define WPR_INFO_ADDR_ALIGNMENT 0x0000000c
+
+void fb_gm20b_init_fs_state(struct gk20a *g)
+{
+        gk20a_dbg_info("initialize gm20b fb");
+
+        gk20a_writel(g, fb_fbhub_num_active_ltcs_r(),
+                        g->ltc_count);
+}
+
+void gm20b_fb_set_mmu_page_size(struct gk20a *g)
+{
+        /* set large page size in fb */
+        u32 fb_mmu_ctrl = gk20a_readl(g, fb_mmu_ctrl_r());
+        fb_mmu_ctrl |= fb_mmu_ctrl_use_pdb_big_page_size_true_f();
+        gk20a_writel(g, fb_mmu_ctrl_r(), fb_mmu_ctrl);
+}
+
+bool gm20b_fb_set_use_full_comp_tag_line(struct gk20a *g)
+{
+        /* set large page size in fb */
+        u32 fb_mmu_ctrl = gk20a_readl(g, fb_mmu_ctrl_r());
+        fb_mmu_ctrl |= fb_mmu_ctrl_use_full_comp_tag_line_true_f();
+        gk20a_writel(g, fb_mmu_ctrl_r(), fb_mmu_ctrl);
+
+        return true;
+}
+
+unsigned int gm20b_fb_compression_page_size(struct gk20a *g)
+{
+        return SZ_128K;
+}
+
+unsigned int gm20b_fb_compressible_page_size(struct gk20a *g)
+{
+        return SZ_64K;
+}
+
+void gm20b_fb_dump_vpr_wpr_info(struct gk20a *g)
+{
+        u32 val;
+
+        /* print vpr and wpr info */
+        val = gk20a_readl(g, fb_mmu_vpr_info_r());
+        val &= ~0x3;
+        val |= fb_mmu_vpr_info_index_addr_lo_v();
+        gk20a_writel(g, fb_mmu_vpr_info_r(), val);
+        nvgpu_err(g, "VPR: %08x %08x %08x %08x",
+                gk20a_readl(g, fb_mmu_vpr_info_r()),
+                gk20a_readl(g, fb_mmu_vpr_info_r()),
+                gk20a_readl(g, fb_mmu_vpr_info_r()),
+                gk20a_readl(g, fb_mmu_vpr_info_r()));
+
+        val = gk20a_readl(g, fb_mmu_wpr_info_r());
+        val &= ~0xf;
+        val |= (fb_mmu_wpr_info_index_allow_read_v());
+        gk20a_writel(g, fb_mmu_wpr_info_r(), val);
+        nvgpu_err(g, "WPR: %08x %08x %08x %08x %08x %08x",
+                gk20a_readl(g, fb_mmu_wpr_info_r()),
+                gk20a_readl(g, fb_mmu_wpr_info_r()),
+                gk20a_readl(g, fb_mmu_wpr_info_r()),
+                gk20a_readl(g, fb_mmu_wpr_info_r()),
+                gk20a_readl(g, fb_mmu_wpr_info_r()),
+                gk20a_readl(g, fb_mmu_wpr_info_r()));
+
+}
+
+static int gm20b_fb_vpr_info_fetch_wait(struct gk20a *g,
+                                            unsigned int msec)
+{
+        struct nvgpu_timeout timeout;
+
+        nvgpu_timeout_init(g, &timeout, msec, NVGPU_TIMER_CPU_TIMER);
+
+        do {
+                u32 val;
+
+                val = gk20a_readl(g, fb_mmu_vpr_info_r());
+                if (fb_mmu_vpr_info_fetch_v(val) ==
+                    fb_mmu_vpr_info_fetch_false_v())
+                        return 0;
+
+        } while (!nvgpu_timeout_expired(&timeout));
+
+        return -ETIMEDOUT;
+}
+
+int gm20b_fb_vpr_info_fetch(struct gk20a *g)
+{
+        if (gm20b_fb_vpr_info_fetch_wait(g, VPR_INFO_FETCH_WAIT)) {
+                return -ETIME;
+        }
+
+        gk20a_writel(g, fb_mmu_vpr_info_r(),
+                        fb_mmu_vpr_info_fetch_true_v());
+
+        return gm20b_fb_vpr_info_fetch_wait(g, VPR_INFO_FETCH_WAIT);
+}
+
+void gm20b_fb_read_wpr_info(struct gk20a *g, struct wpr_carveout_info *inf)
+{
+        u32 val = 0;
+        u64 wpr_start = 0;
+        u64 wpr_end = 0;
+
+        val = gk20a_readl(g, fb_mmu_wpr_info_r());
+        val &= ~0xF;
+        val |= fb_mmu_wpr_info_index_wpr1_addr_lo_v();
+        gk20a_writel(g, fb_mmu_wpr_info_r(), val);
+
+        val = gk20a_readl(g, fb_mmu_wpr_info_r()) >> 0x4;
+        wpr_start = hi32_lo32_to_u64(
+                        (val >> (32 - WPR_INFO_ADDR_ALIGNMENT)),
+                        (val << WPR_INFO_ADDR_ALIGNMENT));
+
+        val = gk20a_readl(g, fb_mmu_wpr_info_r());
+        val &= ~0xF;
+        val |= fb_mmu_wpr_info_index_wpr1_addr_hi_v();
+        gk20a_writel(g, fb_mmu_wpr_info_r(), val);
+
+        val = gk20a_readl(g, fb_mmu_wpr_info_r()) >> 0x4;
+        wpr_end = hi32_lo32_to_u64(
+                        (val >> (32 - WPR_INFO_ADDR_ALIGNMENT)),
+                        (val << WPR_INFO_ADDR_ALIGNMENT));
+
+        inf->wpr_base = wpr_start;
+        inf->nonwpr_base = 0;
+        inf->size = (wpr_end - wpr_start);
+}
+
+bool gm20b_fb_debug_mode_enabled(struct gk20a *g)
+{
+        u32 debug_ctrl = gk20a_readl(g, gr_gpcs_pri_mmu_debug_ctrl_r());
+        return gr_gpcs_pri_mmu_debug_ctrl_debug_v(debug_ctrl) ==
+                gr_gpcs_pri_mmu_debug_ctrl_debug_enabled_v();
+}
+
+void gm20b_fb_set_debug_mode(struct gk20a *g, bool enable)
+{
+        u32 reg_val, fb_debug_ctrl, gpc_debug_ctrl;
+
+        if (enable) {
+                fb_debug_ctrl = fb_mmu_debug_ctrl_debug_enabled_f();
+                gpc_debug_ctrl = gr_gpcs_pri_mmu_debug_ctrl_debug_enabled_f();
+                g->mmu_debug_ctrl = true;
+        } else {
+                fb_debug_ctrl = fb_mmu_debug_ctrl_debug_disabled_f();
+                gpc_debug_ctrl = gr_gpcs_pri_mmu_debug_ctrl_debug_disabled_f();
+                g->mmu_debug_ctrl = false;
+        }
+
+        reg_val = gk20a_readl(g, fb_mmu_debug_ctrl_r());
+        reg_val = set_field(reg_val,
+                        fb_mmu_debug_ctrl_debug_m(), fb_debug_ctrl);
+        gk20a_writel(g, fb_mmu_debug_ctrl_r(), reg_val);
+
+        reg_val = gk20a_readl(g, gr_gpcs_pri_mmu_debug_ctrl_r());
+        reg_val = set_field(reg_val,
+                        gr_gpcs_pri_mmu_debug_ctrl_debug_m(), gpc_debug_ctrl);
+        gk20a_writel(g, gr_gpcs_pri_mmu_debug_ctrl_r(), reg_val);
+}