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Tsirkin" , Jason Wang Subject: [PATCH v2 04/12] hw/misc/allwinner-dramc: Do not use SysBus API to map local MMIO region Date: Thu, 19 Oct 2023 09:16:02 +0200 Message-ID: <20231019071611.98885-5-philmd@linaro.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231019071611.98885-1-philmd@linaro.org> References: <20231019071611.98885-1-philmd@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::42d; envelope-from=philmd@linaro.org; helo=mail-wr1-x42d.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1697699879102100001 There is no point in exposing an internal MMIO region via SysBus and directly mapping it in the very same device. Just map it without using the SysBus API. Transformation done using the following coccinelle script: @@ expression sbdev; expression index; expression addr; expression subregion; @@ - sysbus_init_mmio(sbdev, subregion); ... when !=3D sbdev - sysbus_mmio_map(sbdev, index, addr); + memory_region_add_subregion(get_system_memory(), + addr, subregion); @@ expression priority; @@ - sysbus_init_mmio(sbdev, subregion); ... when !=3D sbdev - sysbus_mmio_map_overlap(sbdev, index, addr, priority); + memory_region_add_subregion_overlap(get_system_memory(), + addr, + subregion, priority); Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Thomas Huth --- hw/misc/allwinner-r40-dramc.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/hw/misc/allwinner-r40-dramc.c b/hw/misc/allwinner-r40-dramc.c index 2cc0254a55..3d81ddb2e1 100644 --- a/hw/misc/allwinner-r40-dramc.c +++ b/hw/misc/allwinner-r40-dramc.c @@ -414,7 +414,6 @@ static void allwinner_r40_dramc_reset(DeviceState *dev) static void allwinner_r40_dramc_realize(DeviceState *dev, Error **errp) { AwR40DramCtlState *s =3D AW_R40_DRAMC(dev); - SysBusDevice *sbd =3D SYS_BUS_DEVICE(dev); =20 if (!get_match_ddr(s->ram_size)) { error_report("%s: ram-size %u MiB is not supported", @@ -422,23 +421,23 @@ static void allwinner_r40_dramc_realize(DeviceState *= dev, Error **errp) exit(1); } =20 - /* R40 support max 2G memory but we only support up to 1G now. index 3= */ + /* R40 support max 2G memory but we only support up to 1G now. */ memory_region_init_io(&s->detect_cells, OBJECT(s), &allwinner_r40_detect_ops, s, "DRAMCELLS", 1 * GiB); - sysbus_init_mmio(sbd, &s->detect_cells); - sysbus_mmio_map_overlap(sbd, 3, s->ram_addr, 10); + memory_region_add_subregion_overlap(get_system_memory(), s->ram_addr, + &s->detect_cells, 10); memory_region_set_enabled(&s->detect_cells, false); =20 /* * We only support DRAM size up to 1G now, so prepare a high memory pa= ge - * after 1G for dualrank detect. index =3D 4 + * after 1G for dualrank detect. */ memory_region_init_io(&s->dram_high, OBJECT(s), &allwinner_r40_dualrank_detect_ops, s, "DRAMHIGH", KiB); - sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->dram_high); - sysbus_mmio_map(SYS_BUS_DEVICE(s), 4, s->ram_addr + GiB); + memory_region_add_subregion(get_system_memory(), s->ram_addr + GiB, + &s->dram_high); } =20 static void allwinner_r40_dramc_init(Object *obj) --=20 2.41.0