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X-Received-From: 62.239.224.236 X-Content-Filtered-By: Mailman/MimeDel 2.1.23 Subject: [Qemu-devel] [PATCH v6 11/26] memory: Access MemoryRegion with MemOp X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: fam@euphon.net, peter.maydell@linaro.org, walling@linux.ibm.com, cohuck@redhat.com, sagark@eecs.berkeley.edu, david@redhat.com, jasowang@redhat.com, palmer@sifive.com, mark.cave-ayland@ilande.co.uk, i.mitsyanko@gmail.com, keith.busch@intel.com, jcmvbkbc@gmail.com, frederic.konrad@adacore.com, dmitry.fleytman@gmail.com, kraxel@redhat.com, edgar.iglesias@gmail.com, gxt@mprc.pku.edu.cn, pburton@wavecomp.com, xiaoguangrong.eric@gmail.com, peter.chubb@nicta.com.au, philmd@redhat.com, robh@kernel.org, hare@suse.com, sstabellini@kernel.org, berto@igalia.com, chouteau@adacore.com, qemu-block@nongnu.org, arikalo@wavecomp.com, jslaby@suse.cz, deller@gmx.de, mst@redhat.com, magnus.damm@gmail.com, jcd@tribudubois.net, pasic@linux.ibm.com, borntraeger@de.ibm.com, mreitz@redhat.com, hpoussin@reactos.org, joel@jms.id.au, anthony.perard@citrix.com, xen-devel@lists.xenproject.org, david@gibson.dropbear.id.au, lersek@redhat.com, green@moxielogic.com, atar4qemu@gmail.com, antonynpavlov@gmail.com, marex@denx.de, jiri@resnulli.us, ehabkost@redhat.com, minyard@acm.org, qemu-s390x@nongnu.org, sw@weilnetz.de, alistair@alistair23.me, yuval.shaia@oracle.com, b.galvani@gmail.com, eric.auger@redhat.com, alex.williamson@redhat.com, qemu-arm@nongnu.org, jan.kiszka@web.de, clg@kaod.org, stefanha@redhat.com, marcandre.lureau@redhat.com, shorne@gmail.com, jsnow@redhat.com, rth@twiddle.net, kwolf@redhat.com, qemu-riscv@nongnu.org, proljc@gmail.com, pbonzini@redhat.com, andrew@aj.id.au, kbastian@mail.uni-paderborn.de, crwulff@gmail.com, laurent@vivier.eu, Andrew.Baumann@microsoft.com, sundeep.lkml@gmail.com, andrew.smirnov@gmail.com, michael@walle.cc, paul.durrant@citrix.com, qemu-ppc@nongnu.org, huth@tuxfamily.org, amarkovic@wavecomp.com, imammedo@redhat.com, aurelien@aurel32.net, stefanb@linux.ibm.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Convert memory_region_dispatch_{read|write} operand "unsigned size" into a "MemOp op". Signed-off-by: Tony Nguyen Reviewed-by: Richard Henderson --- include/exec/memop.h | 18 +++++++++++++----- include/exec/memory.h | 9 +++++---- memory.c | 7 +++++-- 3 files changed, 23 insertions(+), 11 deletions(-) -- 1.8.3.1 ? diff --git a/include/exec/memop.h b/include/exec/memop.h index 5c5769e..4a4212d 100644 --- a/include/exec/memop.h +++ b/include/exec/memop.h @@ -12,6 +12,8 @@ #ifndef MEMOP_H #define MEMOP_H +#include "qemu/host-utils.h" + typedef enum MemOp { MO_8 = 0, MO_16 = 1, @@ -107,14 +109,20 @@ typedef enum MemOp { MO_SSIZE = MO_SIZE | MO_SIGN, } MemOp; +/* MemOp to size in bytes. */ +static inline unsigned memop_size(MemOp op) +{ + return 1 << ((op) & MO_SIZE); +} + /* Size in bytes to MemOp. */ static inline MemOp size_memop(unsigned size) { - /* - * FIXME: No-op to aid conversion of memory_region_dispatch_{read|write} - * "unsigned size" operand into a "MemOp op". - */ - return size; +#ifdef CONFIG_DEBUG_TCG + /* Power of 2 up to 8. */ + assert((size & (size - 1)) == 0 && size >= 1 && size <= 8); +#endif + return ctz32(size); } #endif diff --git a/include/exec/memory.h b/include/exec/memory.h index bb0961d..975b86a 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -19,6 +19,7 @@ #include "exec/cpu-common.h" #include "exec/hwaddr.h" #include "exec/memattrs.h" +#include "exec/memop.h" #include "exec/ramlist.h" #include "qemu/queue.h" #include "qemu/int128.h" @@ -1731,13 +1732,13 @@ void mtree_info(bool flatview, bool dispatch_tree, bool owner); * @mr: #MemoryRegion to access * @addr: address within that region * @pval: pointer to uint64_t which the data is written to - * @size: size of the access in bytes + * @op: size, sign, and endianness of the memory operation * @attrs: memory transaction attributes to use for the access */ MemTxResult memory_region_dispatch_read(MemoryRegion *mr, hwaddr addr, uint64_t *pval, - unsigned size, + MemOp op, MemTxAttrs attrs); /** * memory_region_dispatch_write: perform a write directly to the specified @@ -1746,13 +1747,13 @@ MemTxResult memory_region_dispatch_read(MemoryRegion *mr, * @mr: #MemoryRegion to access * @addr: address within that region * @data: data to write - * @size: size of the access in bytes + * @op: size, sign, and endianness of the memory operation * @attrs: memory transaction attributes to use for the access */ MemTxResult memory_region_dispatch_write(MemoryRegion *mr, hwaddr addr, uint64_t data, - unsigned size, + MemOp op, MemTxAttrs attrs); /** diff --git a/memory.c b/memory.c index 5d8c9a9..89ea4fb 100644 --- a/memory.c +++ b/memory.c @@ -1439,9 +1439,10 @@ static MemTxResult memory_region_dispatch_read1(MemoryRegion *mr, MemTxResult memory_region_dispatch_read(MemoryRegion *mr, hwaddr addr, uint64_t *pval, - unsigned size, + MemOp op, MemTxAttrs attrs) { + unsigned size = memop_size(op); MemTxResult r; if (!memory_region_access_valid(mr, addr, size, false, attrs)) { @@ -1483,9 +1484,11 @@ static bool memory_region_dispatch_write_eventfds(MemoryRegion *mr, MemTxResult memory_region_dispatch_write(MemoryRegion *mr, hwaddr addr, uint64_t data, - unsigned size, + MemOp op, MemTxAttrs attrs) { + unsigned size = memop_size(op); + if (!memory_region_access_valid(mr, addr, size, true, attrs)) { unassigned_mem_write(mr, addr, data, size); return MEMTX_DECODE_ERROR;