Date: Wed, 17 Jan 2018 09:45:18 +0000 (UTC) From: Wojciech Macek <wma@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r328080 - head/sys/powerpc/powerpc Message-ID: <201801170945.w0H9jIP5090022@repo.freebsd.org>
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Author: wma Date: Wed Jan 17 09:45:18 2018 New Revision: 328080 URL: https://svnweb.freebsd.org/changeset/base/328080 Log: PPC64: implement missing busdma ops Add missing little-endian 64-bit read and write. Since there is no direct ASM opcode for this, perform byte swap if necessary. Created by: Wojciech Macek <wma@semihalf.com> Obtained from: Semihalf Sponsored by: QCM Technologies Modified: head/sys/powerpc/powerpc/bus_machdep.c Modified: head/sys/powerpc/powerpc/bus_machdep.c ============================================================================== --- head/sys/powerpc/powerpc/bus_machdep.c Wed Jan 17 09:36:48 2018 (r328079) +++ head/sys/powerpc/powerpc/bus_machdep.c Wed Jan 17 09:45:18 2018 (r328080) @@ -43,6 +43,7 @@ __FBSDID("$FreeBSD$"); #include <sys/ktr.h> #include <vm/vm.h> #include <vm/pmap.h> +#include <sys/endian.h> #include <machine/bus.h> #include <machine/pio.h> @@ -333,6 +334,7 @@ bs_be_ws_8(bus_space_handle_t bsh, bus_size_t ofs, uin addr = __ppc_ba(bsh, ofs); *addr = val; powerpc_iomb(); + CTR4(KTR_BE_IO, "%s(bsh=%#x, ofs=%#x, val=%#x)", __func__, bsh, ofs, val); } static void @@ -532,7 +534,14 @@ bs_le_rs_4(bus_space_handle_t bsh, bus_size_t ofs) static uint64_t bs_le_rs_8(bus_space_handle_t bsh, bus_size_t ofs) { - TODO; + volatile uint64_t *addr; + uint64_t res; + + addr = __ppc_ba(bsh, ofs); + res = le64toh(*addr); + powerpc_iomb(); + CTR4(KTR_LE_IO, "%s(bsh=%#x, ofs=%#x) = %#x", __func__, bsh, ofs, res); + return (res); } static void @@ -631,7 +640,12 @@ bs_le_ws_4(bus_space_handle_t bsh, bus_size_t ofs, uin static void bs_le_ws_8(bus_space_handle_t bsh, bus_size_t ofs, uint64_t val) { - TODO; + volatile uint64_t *addr; + + addr = __ppc_ba(bsh, ofs); + *addr = htole64(val); + powerpc_iomb(); + CTR4(KTR_LE_IO, "%s(bsh=%#x, ofs=%#x, val=%#x)", __func__, bsh, ofs, val); } static void
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