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sd_card: SDHCI quirk for 136-bit responses

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This commit is contained in:
Norman Feske 2015-06-24 12:07:10 +02:00 committed by Christian Helmuth
parent 281d3ffba9
commit cc4febd1c2
1 changed files with 28 additions and 8 deletions
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36
repos/os/src/drivers/sd_card/rpi/sdhci.h
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@ -42,6 +42,26 @@ struct Sdhci : Genode::Mmio
struct Resp2 : Register<0x18, 32> { };
struct Resp3 : Register<0x1c, 32> { };
/*
* Handle the SDHCI quirk that responses of 136-bit requests are shifted
* by 8 bits.
*/
template <Genode::off_t OFFSET>
struct Cmdresp_tpl : Register<OFFSET, 32>
{
struct Resp_8_24 : Register<OFFSET, 32>::template Bitfield<0, 24> { };
struct Resp_0_8 : Register<OFFSET, 32>::template Bitfield<24, 8> { };
};
struct Cmdresp0 : Cmdresp_tpl<0x10> { };
struct Cmdresp1 : Cmdresp_tpl<0x14> { };
struct Cmdresp2 : Cmdresp_tpl<0x18> { };
struct Cmdresp3 : Cmdresp_tpl<0x1c> { };
struct Resp0_136 : Genode::Bitset_2<Cmdresp3::Resp_0_8, Cmdresp0::Resp_8_24> { };
struct Resp1_136 : Genode::Bitset_2<Cmdresp0::Resp_0_8, Cmdresp1::Resp_8_24> { };
struct Resp2_136 : Genode::Bitset_2<Cmdresp1::Resp_0_8, Cmdresp2::Resp_8_24> { };
struct Resp3_136 : Genode::Bitset_2<Cmdresp2::Resp_0_8, Cmdresp3::Resp_8_24> { };
struct Data : Register<0x20, 32> { };
struct Control0 : Register<0x28, 32>
@ -355,20 +375,20 @@ struct Sdhci_controller : private Sdhci, public Sd_card::Host_controller
Sd_card::Cid _read_cid()
{
Sd_card::Cid cid;
cid.raw_0 = read<Resp0>();
cid.raw_1 = read<Resp1>();
cid.raw_2 = read<Resp2>();
cid.raw_3 = read<Resp3>();
cid.raw_0 = read<Resp0_136>();
cid.raw_1 = read<Resp1_136>();
cid.raw_2 = read<Resp2_136>();
cid.raw_3 = read<Resp3_136>();
return cid;
}
Sd_card::Csd _read_csd()
{
Sd_card::Csd csd;
csd.csd0 = read<Resp0>();
csd.csd1 = read<Resp1>();
csd.csd2 = read<Resp2>();
csd.csd3 = read<Resp3>();
csd.csd0 = read<Resp0_136>();
csd.csd1 = read<Resp1_136>();
csd.csd2 = read<Resp2_136>();
csd.csd3 = read<Resp3_136>();
return csd;
}