From patchwork Tue May 21 10:57:09 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Bonzini X-Patchwork-Id: 245267 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id EEBA62C0084 for ; Tue, 21 May 2013 20:59:55 +1000 (EST) Received: from localhost ([::1]:40295 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UekIL-0006Zi-N6 for incoming@patchwork.ozlabs.org; Tue, 21 May 2013 06:59:53 -0400 Received: from eggs.gnu.org ([208.118.235.92]:44861) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UekGU-0003xJ-Gf for qemu-devel@nongnu.org; Tue, 21 May 2013 06:58:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UekGS-00051h-LY for qemu-devel@nongnu.org; Tue, 21 May 2013 06:57:58 -0400 Received: from mail-ee0-f54.google.com ([74.125.83.54]:46089) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UekGS-00051V-9X for qemu-devel@nongnu.org; Tue, 21 May 2013 06:57:56 -0400 Received: by mail-ee0-f54.google.com with SMTP id e50so311578eek.13 for ; Tue, 21 May 2013 03:57:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:from:to:cc:subject:date:message-id:x-mailer:in-reply-to :references; bh=dq9H+3+fKnjqMPozFhhodebbJshZ67lPjJwl8DML3Bc=; b=mOSC7Qh2JXbwks0h19jYwzlvRN1gDbhKDedMpy7mbdsmeLCD6iZo+T7fLEjz+wH71N 8vjxD8ci1UJ3owAjZtvWdNkBgSjlmypnVfFapb3FTMczltd7mQvjSDBaLrdcvBvE0ln4 HNeNqwUmk0ZzkMngGdqjmMRsPyBZ3HxHm1lpwsprPXHRijMcdcMvCOa5XDNBd2vzLr/E /FAM6aLLDXQ5+5wVGZzDJK98lWw0CJ2E92HtRbj40oI9wfWP+D/0BtAiy789ATgf1faP BsBDoYk1SLct7kKzoxruXCWbs/iSzCQA6i/TBxTO16wE75IopFDPYjIafPlmgTyXAZPe r2Tw== X-Received: by 10.15.108.141 with SMTP id cd13mr5052258eeb.46.1369133875496; Tue, 21 May 2013 03:57:55 -0700 (PDT) Received: from playground.lan (net-37-116-223-193.cust.dsl.vodafone.it. [37.116.223.193]) by mx.google.com with ESMTPSA id a5sm2754398ees.6.2013.05.21.03.57.53 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Tue, 21 May 2013 03:57:54 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Date: Tue, 21 May 2013 12:57:09 +0200 Message-Id: <1369133851-1894-9-git-send-email-pbonzini@redhat.com> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1369133851-1894-1-git-send-email-pbonzini@redhat.com> References: <1369133851-1894-1-git-send-email-pbonzini@redhat.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 74.125.83.54 Cc: peter.maydell@linaro.org, jan.kiszka@gmail.com, Jan Kiszka , David Gibson Subject: [Qemu-devel] [PATCH 08/30] memory: Rename readable flag to romd_mode X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Jan Kiszka "Readable" is a very unfortunate name for this flag because even a rom_device region will always be readable from the guest POV. What differs is the mapping, just like the comments had to explain already. Also, readable could currently be understood as being a generic region flag, but it only applies to rom_device regions. So rename the flag and the function to modify it after the original term "ROMD" which could also be interpreted as "ROM direct", i.e. ROM mode with direct access. In any case, the scope of the flag is clearer now. Signed-off-by: Jan Kiszka Reviewed-by: Peter Maydell Signed-off-by: Paolo Bonzini --- hw/block/pflash_cfi01.c | 6 +++--- hw/block/pflash_cfi02.c | 2 +- include/exec/memory.h | 22 +++++++++++----------- memory.c | 30 +++++++++++++++--------------- 4 files changed, 30 insertions(+), 30 deletions(-) diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c index 3ff20e0..63d7c99 100644 --- a/hw/block/pflash_cfi01.c +++ b/hw/block/pflash_cfi01.c @@ -105,7 +105,7 @@ static void pflash_timer (void *opaque) DPRINTF("%s: command %02x done\n", __func__, pfl->cmd); /* Reset flash */ pfl->status ^= 0x80; - memory_region_rom_device_set_readable(&pfl->mem, true); + memory_region_rom_device_set_romd(&pfl->mem, true); pfl->wcycle = 0; pfl->cmd = 0; } @@ -281,7 +281,7 @@ static void pflash_write(pflash_t *pfl, hwaddr offset, if (!pfl->wcycle) { /* Set the device in I/O access mode */ - memory_region_rom_device_set_readable(&pfl->mem, false); + memory_region_rom_device_set_romd(&pfl->mem, false); } switch (pfl->wcycle) { @@ -458,7 +458,7 @@ static void pflash_write(pflash_t *pfl, hwaddr offset, "\n", __func__, offset, pfl->wcycle, pfl->cmd, value); reset_flash: - memory_region_rom_device_set_readable(&pfl->mem, true); + memory_region_rom_device_set_romd(&pfl->mem, true); pfl->wcycle = 0; pfl->cmd = 0; diff --git a/hw/block/pflash_cfi02.c b/hw/block/pflash_cfi02.c index 9a7fa70..5f25246 100644 --- a/hw/block/pflash_cfi02.c +++ b/hw/block/pflash_cfi02.c @@ -111,7 +111,7 @@ static void pflash_setup_mappings(pflash_t *pfl) static void pflash_register_memory(pflash_t *pfl, int rom_mode) { - memory_region_rom_device_set_readable(&pfl->orig_mem, rom_mode); + memory_region_rom_device_set_romd(&pfl->orig_mem, rom_mode); pfl->rom_mode = rom_mode; } diff --git a/include/exec/memory.h b/include/exec/memory.h index efe210b..0409180 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -126,7 +126,7 @@ struct MemoryRegion { ram_addr_t ram_addr; bool subpage; bool terminates; - bool readable; + bool romd_mode; bool ram; bool readonly; /* For RAM regions */ bool enabled; @@ -355,16 +355,16 @@ uint64_t memory_region_size(MemoryRegion *mr); bool memory_region_is_ram(MemoryRegion *mr); /** - * memory_region_is_romd: check whether a memory region is ROMD + * memory_region_is_romd: check whether a memory region is in ROMD mode * - * Returns %true is a memory region is ROMD and currently set to allow + * Returns %true if a memory region is a ROM device and currently set to allow * direct reads. * * @mr: the memory region being queried */ static inline bool memory_region_is_romd(MemoryRegion *mr) { - return mr->rom_device && mr->readable; + return mr->rom_device && mr->romd_mode; } /** @@ -502,18 +502,18 @@ void memory_region_reset_dirty(MemoryRegion *mr, hwaddr addr, void memory_region_set_readonly(MemoryRegion *mr, bool readonly); /** - * memory_region_rom_device_set_readable: enable/disable ROM readability + * memory_region_rom_device_set_romd: enable/disable ROMD mode * * Allows a ROM device (initialized with memory_region_init_rom_device() to - * to be marked as readable (default) or not readable. When it is readable, - * the device is mapped to guest memory. When not readable, reads are - * forwarded to the #MemoryRegion.read function. + * set to ROMD mode (default) or MMIO mode. When it is in ROMD mode, the + * device is mapped to guest memory and satisfies read access directly. + * When in MMIO mode, reads are forwarded to the #MemoryRegion.read function. + * Writes are always handled by the #MemoryRegion.write function. * * @mr: the memory region to be updated - * @readable: whether reads are satisified directly (%true) or via callbacks - * (%false) + * @romd_mode: %true to put the region into ROMD mode */ -void memory_region_rom_device_set_readable(MemoryRegion *mr, bool readable); +void memory_region_rom_device_set_romd(MemoryRegion *mr, bool romd_mode); /** * memory_region_set_coalescing: Enable memory coalescing for the region. diff --git a/memory.c b/memory.c index 34bfb13..013464b 100644 --- a/memory.c +++ b/memory.c @@ -213,7 +213,7 @@ struct FlatRange { hwaddr offset_in_region; AddrRange addr; uint8_t dirty_log_mask; - bool readable; + bool romd_mode; bool readonly; }; @@ -236,7 +236,7 @@ static bool flatrange_equal(FlatRange *a, FlatRange *b) return a->mr == b->mr && addrrange_equal(a->addr, b->addr) && a->offset_in_region == b->offset_in_region - && a->readable == b->readable + && a->romd_mode == b->romd_mode && a->readonly == b->readonly; } @@ -276,7 +276,7 @@ static bool can_merge(FlatRange *r1, FlatRange *r2) r1->addr.size), int128_make64(r2->offset_in_region)) && r1->dirty_log_mask == r2->dirty_log_mask - && r1->readable == r2->readable + && r1->romd_mode == r2->romd_mode && r1->readonly == r2->readonly; } @@ -532,7 +532,7 @@ static void render_memory_region(FlatView *view, fr.offset_in_region = offset_in_region; fr.addr = addrrange_make(base, now); fr.dirty_log_mask = mr->dirty_log_mask; - fr.readable = mr->readable; + fr.romd_mode = mr->romd_mode; fr.readonly = readonly; flatview_insert(view, i, &fr); ++i; @@ -552,7 +552,7 @@ static void render_memory_region(FlatView *view, fr.offset_in_region = offset_in_region; fr.addr = addrrange_make(base, remain); fr.dirty_log_mask = mr->dirty_log_mask; - fr.readable = mr->readable; + fr.romd_mode = mr->romd_mode; fr.readonly = readonly; flatview_insert(view, i, &fr); } @@ -801,7 +801,7 @@ void memory_region_init(MemoryRegion *mr, mr->enabled = true; mr->terminates = false; mr->ram = false; - mr->readable = true; + mr->romd_mode = true; mr->readonly = false; mr->rom_device = false; mr->destructor = memory_region_destructor_none; @@ -1121,11 +1121,11 @@ void memory_region_set_readonly(MemoryRegion *mr, bool readonly) } } -void memory_region_rom_device_set_readable(MemoryRegion *mr, bool readable) +void memory_region_rom_device_set_romd(MemoryRegion *mr, bool romd_mode) { - if (mr->readable != readable) { + if (mr->romd_mode != romd_mode) { memory_region_transaction_begin(); - mr->readable = readable; + mr->romd_mode = romd_mode; memory_region_update_pending |= mr->enabled; memory_region_transaction_commit(); } @@ -1659,9 +1659,9 @@ static void mtree_print_mr(fprintf_function mon_printf, void *f, base + mr->addr + (hwaddr)int128_get64(mr->size) - 1, mr->priority, - mr->readable ? 'R' : '-', - !mr->readonly && !(mr->rom_device && mr->readable) ? 'W' - : '-', + mr->romd_mode ? 'R' : '-', + !mr->readonly && !(mr->rom_device && mr->romd_mode) ? 'W' + : '-', mr->name, mr->alias->name, mr->alias_offset, @@ -1674,9 +1674,9 @@ static void mtree_print_mr(fprintf_function mon_printf, void *f, base + mr->addr + (hwaddr)int128_get64(mr->size) - 1, mr->priority, - mr->readable ? 'R' : '-', - !mr->readonly && !(mr->rom_device && mr->readable) ? 'W' - : '-', + mr->romd_mode ? 'R' : '-', + !mr->readonly && !(mr->rom_device && mr->romd_mode) ? 'W' + : '-', mr->name); }