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Fri, 27 Sep 2024 14:45:41 -0700 (PDT) Received: from localhost.localdomain ([176.187.217.136]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-42e96a36292sm84637645e9.32.2024.09.27.14.45.38 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Fri, 27 Sep 2024 14:45:39 -0700 (PDT) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Daniel Henrique Barboza , Nicholas Piggin , David Gibson , qemu-ppc@nongnu.org, Alexey Kardashevskiy , Harsh Prateek Bora , Jason Wang , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Subject: [PATCH 1/4] hw/ppc/spapr_nvdimm: Simplify LD/ST API uses Date: Fri, 27 Sep 2024 23:45:28 +0200 Message-ID: <20240927214531.20242-2-philmd@linaro.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240927214531.20242-1-philmd@linaro.org> References: <20240927214531.20242-1-philmd@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::32b; envelope-from=philmd@linaro.org; helo=mail-wm1-x32b.google.com X-Spam_score_int: 12 X-Spam_score: 1.2 X-Spam_bar: + X-Spam_report: (1.2 / 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_SBL_CSS=3.335, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org ldn/stn methods handle the access size, no need for the switch case. Signed-off-by: Philippe Mathieu-Daudé --- hw/ppc/spapr_nvdimm.c | 47 ++++--------------------------------------- 1 file changed, 4 insertions(+), 43 deletions(-) diff --git a/hw/ppc/spapr_nvdimm.c b/hw/ppc/spapr_nvdimm.c index 7d2dfe5e3d..5af0b13370 100644 --- a/hw/ppc/spapr_nvdimm.c +++ b/hw/ppc/spapr_nvdimm.c @@ -250,7 +250,6 @@ static target_ulong h_scm_read_metadata(PowerPCCPU *cpu, SpaprDrc *drc = spapr_drc_by_index(drc_index); NVDIMMDevice *nvdimm; NVDIMMClass *ddc; - uint64_t data = 0; uint8_t buf[8] = { 0 }; if (!drc || !drc->dev || @@ -272,24 +271,7 @@ static target_ulong h_scm_read_metadata(PowerPCCPU *cpu, ddc = NVDIMM_GET_CLASS(nvdimm); ddc->read_label_data(nvdimm, buf, len, offset); - switch (len) { - case 1: - data = ldub_p(buf); - break; - case 2: - data = lduw_be_p(buf); - break; - case 4: - data = ldl_be_p(buf); - break; - case 8: - data = ldq_be_p(buf); - break; - default: - g_assert_not_reached(); - } - - args[0] = data; + args[0] = ldn_be_p(buf, len); return H_SUCCESS; } @@ -325,31 +307,10 @@ static target_ulong h_scm_write_metadata(PowerPCCPU *cpu, return H_P2; } - switch (len) { - case 1: - if (data & 0xffffffffffffff00) { - return H_P2; - } - stb_p(buf, data); - break; - case 2: - if (data & 0xffffffffffff0000) { - return H_P2; - } - stw_be_p(buf, data); - break; - case 4: - if (data & 0xffffffff00000000) { - return H_P2; - } - stl_be_p(buf, data); - break; - case 8: - stq_be_p(buf, data); - break; - default: - g_assert_not_reached(); + if (len < 8 && extract64(data, 8 * len, 64 - 8 * len)) { + return H_P2; } + stn_be_p(buf, data, len); ddc = NVDIMM_GET_CLASS(nvdimm); ddc->write_label_data(nvdimm, buf, len, offset);