sdmmc: implement driver suitable for fs + bootloader

* sdmmc: begin skeletoning sdmmc driver * sdmmc: add most of SdHostStandardController * sdmmc: implement most of SdmmcController * sdmmc: Sdmmc2Controller * sdmmc: skeleton implementation of Sdmmc1Controller * sdmmc: complete abstract logic for Sdmmc1 power controller * sdmmc: implement gpio handling for sdmmc1-register-control * sdmmc: implement pinmux handling for sdmmc1-register-control * sdmmc: fix building for arm32 and in stratosphere context * sdmmc: implement voltage enable/set for sdmmc1-register-control * util: move T(V)SNPrintf from kernel to util * sdmmc: implement BaseDeviceAccessor * sdmmc: implement MmcDeviceAccessor * sdmmc: implement clock reset controller for register api * sdmmc: fix bug in WaitWhileCommandInhibit, add mmc accessors * exo: add sdmmc test program * sdmmc: fix speed mode extension, add CheckMmcConnection for debug * sdmmc: add DeviceDetector, gpio: implement client api * gpio: modernize client api instead of doing it the lazy way * sdmmc: SdCardDeviceAccessor impl * sdmmc: update test program to read first two sectors of sd card * sdmmc: fix vref sel * sdmmc: finish outward-facing api (untested) * ams: changes for libvapours including tegra register defs * sdmmc: remove hwinit
2025-05-16 08:04:23 -04:00 · 2020-10-30 11:54:30 -07:00 · 2020-10-30 11:54:30 -07:00 · 166318ba77
commit 166318ba77
parent ac04e02a08
143 changed files with 13696 additions and 1569 deletions
--- a/libraries/libvapours/source/sdmmc/impl/sdmmc_timer.cpp
+++ b/libraries/libvapours/source/sdmmc/impl/sdmmc_timer.cpp
@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+ */
+#if defined(ATMOSPHERE_IS_STRATOSPHERE)
+#include <stratosphere.hpp>
+#elif defined(ATMOSPHERE_IS_MESOSPHERE)
+#include <mesosphere.hpp>
+#elif defined(ATMOSPHERE_IS_EXOSPHERE)
+#include <exosphere.hpp>
+#else
+#include <vapours.hpp>
+#endif
+#include "sdmmc_timer.hpp"
+
+namespace ams::sdmmc::impl {
+
+    namespace {
+
+        #if defined(AMS_SDMMC_USE_OS_TIMER)
+        void SpinWaitMicroSeconds(u32 us) {
+            const os::Tick timeout_tick = os::GetSystemTick() + os::ConvertToTick(TimeSpan::FromMicroSeconds(us)) + os::Tick(1);
+            while (true) {
+                if (os::GetSystemTick() > timeout_tick) {
+                    break;
+                }
+            }
+        }
+
+        ALWAYS_INLINE void DataSynchronizationBarrier() {
+            #if defined(ATMOSPHERE_ARCH_ARM64)
+            __asm__ __volatile__("dsb sy" ::: "memory");
+            #elif defined(ATMOSPHERE_ARCH_ARM)
+            __asm__ __volatile__("dsb" ::: "memory");
+            #else
+                #error "Unknown architecture for DataSynchronizationBarrier"
+            #endif
+        }
+
+        ALWAYS_INLINE void InstructionSynchronizationBarrier() {
+            #if defined(ATMOSPHERE_ARCH_ARM64) || defined(ATMOSPHERE_ARCH_ARM)
+            __asm__ __volatile__("isb" ::: "memory");
+            #else
+                #error "Unknown architecture for InstructionSynchronizationBarrier"
+            #endif
+        }
+        #endif
+
+    }
+
+    void WaitMicroSeconds(u32 us) {
+        #if defined(AMS_SDMMC_USE_OS_TIMER)
+            /* Ensure that nothing is reordered before we wait. */
+            DataSynchronizationBarrier();
+            InstructionSynchronizationBarrier();
+
+            /* If the time is small, spinloop, otherwise pend ourselves. */
+            if (us < 100) {
+                SpinWaitMicroSeconds(us);
+            } else {
+                os::SleepThread(TimeSpan::FromMicroSeconds(us));
+            }
+
+            /* Ensure that nothing is reordered after we wait. */
+            DataSynchronizationBarrier();
+            InstructionSynchronizationBarrier();
+        #elif defined(AMS_SDMMC_USE_UTIL_TIMER)
+            util::WaitMicroSeconds(us);
+        #else
+            #error "Unknown context for ams::sdmmc::impl::WaitMicroSeconds"
+        #endif
+    }
+
+    void WaitClocks(u32 num_clocks, u32 clock_frequency_khz) {
+        AMS_ABORT_UNLESS(clock_frequency_khz > 0);
+        WaitMicroSeconds(util::DivideUp(1000 * num_clocks, clock_frequency_khz));
+    }
+
+}