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This commit is contained in:
Pokechu22 2020-09-05 15:01:48 -07:00
parent a4bde13b57
commit bc82653fea
1 changed files with 10 additions and 5 deletions
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15
Source/Core/Core/HW/EXI/EXI_DeviceSD.h
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@ -18,6 +18,10 @@ class PointerWrap;
namespace ExpansionInterface namespace ExpansionInterface
{ {
// EXI-SD adapter (DOL-019) // EXI-SD adapter (DOL-019)
// The SD adapter uses SPI mode to communicate with the SD card (SPI and EXI are basically the
// same). Refer to the simplified specification, version 3.01, at
// https://web.archive.org/web/20131205014133/https://www.sdcard.org/downloads/pls/simplified_specs/archive/part1_301.pdf
// for details (SPI information starts on section 7, page 113 (125 in the PDF).
class CEXISD final : public IEXIDevice class CEXISD final : public IEXIDevice
{ {
public: public:
@ -33,7 +37,7 @@ public:
void DoState(PointerWrap& p) override; void DoState(PointerWrap& p) override;
private: private:
enum class Command enum class Command // § 7.3.1.1, Table 7-3
{ {
GoIdleState = 0, GoIdleState = 0,
SendOpCond = 1, SendOpCond = 1,
@ -93,7 +97,7 @@ private:
// 60-63 Reserved for manufacturer // 60-63 Reserved for manufacturer
}; };
enum class AppCommand enum class AppCommand // § 7.3.1.1, Table 7-4
{ {
// 1-5 Reserved // 1-5 Reserved
// SetBusWidth = 6, // Not SPI // SetBusWidth = 6, // Not SPI
@ -124,7 +128,7 @@ private:
// 56-59 Reserved for security spec // 56-59 Reserved for security spec
}; };
enum class OCR : u32 // Operating Conditions Register enum class OCR : u32 // Operating Conditions Register, § 5.1
{ {
// 0-6 reserved // 0-6 reserved
// 7 reserved for Low Voltage Range // 7 reserved for Low Voltage Range
@ -153,6 +157,7 @@ private:
OCR::Vdd27To28, OCR::Vdd28To29, OCR::Vdd29To30, OCR::Vdd30To31, OCR::Vdd31To32, OCR::Vdd27To28, OCR::Vdd28To29, OCR::Vdd29To30, OCR::Vdd30To31, OCR::Vdd31To32,
OCR::Vdd32To33, OCR::Vdd33To34, OCR::Vdd34To35, OCR::Vdd35To36, OCR::CardPowerUpStatus}; OCR::Vdd32To33, OCR::Vdd33To34, OCR::Vdd34To35, OCR::Vdd35To36, OCR::CardPowerUpStatus};
// § 7.3.3
static constexpr u8 START_BLOCK = 0xfe, START_MULTI_BLOCK = 0xfc, END_BLOCK = 0xfd; static constexpr u8 START_BLOCK = 0xfe, START_MULTI_BLOCK = 0xfc, END_BLOCK = 0xfd;
// The spec has the first 3 bits of the data responses marked with an x, and doesn't explain why // The spec has the first 3 bits of the data responses marked with an x, and doesn't explain why
static constexpr u8 DATA_RESPONSE_ACCEPTED = 0b0'010'0; static constexpr u8 DATA_RESPONSE_ACCEPTED = 0b0'010'0;
@ -201,7 +206,7 @@ private:
u8 ReadForBlockWrite(); u8 ReadForBlockWrite();
void WriteForBlockWrite(u8 byte); void WriteForBlockWrite(u8 byte);
enum class R1 enum class R1 // § 7.3.2.1
{ {
InIdleState = 1 << 0, InIdleState = 1 << 0,
EraseRequest = 1 << 1, EraseRequest = 1 << 1,
@ -212,7 +217,7 @@ private:
ParameterError = 1 << 6, ParameterError = 1 << 6,
// Top bit 0 // Top bit 0
}; };
enum class R2 enum class R2 // § 7.3.2.3
{ {
CardIsLocked = 1 << 0, CardIsLocked = 1 << 0,
WriteProtectEraseSkip = 1 << 1, // or lock/unlock command failed WriteProtectEraseSkip = 1 << 1, // or lock/unlock command failed