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dkim=pass reason="pass (just generated, assumed good)" header.d=opensource.wdc.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d= opensource.wdc.com; h=content-transfer-encoding:mime-version :references:in-reply-to:x-mailer:message-id:date:subject:to :from; s=dkim; t=1665985859; x=1668577860; bh=7zFLMnHdeWGesZyvBb sBwbJgj9esHPllX/QUB1wEyYg=; b=CRWIaK5lzHohje7wVOQEBw7qH0cWxYox7T APgxKmGtegRUZkkg0RaRxb3Wr9e0IFt9tW7AV5epebqjRrAolpoZia5KdLPW8dXc mvQjFEMdCRDys4uIbGaKdedwm9ec38dLHdegMjn1Tdq0qXU8/p4RbBR8ZBrpDeAs n/S2+BG+wBVBgQIrhEoBf0iNUaSb0oBNpPCYlEe4LgNSt8WE+BvcRXS/nKu//o5Y X1xXKgqoQuluQkf4ghyU0jeXdK3r36HDgT1E1cJLb2aXlyvQc4JTF8ZT+u+OkCwG vfLGSX2jvvni+ArmmouL8Kw5dmLsWWSEmo+mwjZjs64FwfnJd+IA== X-Virus-Scanned: amavisd-new at usg-ed-osssrv.wdc.com From: Wilfred Mallawa To: alistair@alistair23.me, qemu-riscv@nongnu.org Cc: qemu-devel@nongnu.org, Wilfred Mallawa Subject: [PATCH v3 1/2] hw/registerfields: add `FIELDx_1CLEAR()` macro Date: Mon, 17 Oct 2022 15:49:51 +1000 Message-Id: <20221017054950.317584-2-wilfred.mallawa@opensource.wdc.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221017054950.317584-1-wilfred.mallawa@opensource.wdc.com> References: <20221017054950.317584-1-wilfred.mallawa@opensource.wdc.com> MIME-Version: 1.0 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=68.232.141.245; envelope-from=prvs=282226d84=wilfred.mallawa@opensource.wdc.com; helo=esa1.hgst.iphmx.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 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_MED=-2.3, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham 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" X-ZM-MESSAGEID: 1665987017426100001 Content-Type: text/plain; charset="utf-8" From: Wilfred Mallawa Adds a helper macro that implements the register `w1c` functionality. Ex: uint32_t data =3D FIELD32_1CLEAR(val, REG, FIELD); If ANY bits of the specified `FIELD` is set then the respective field is cleared and returned to `data`. If the field is cleared (0), then no change and val is returned. Signed-off-by: Wilfred Mallawa Reviewed-by: Alistair Francis --- include/hw/registerfields.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/include/hw/registerfields.h b/include/hw/registerfields.h index 1330ca77de..0b8404c2f7 100644 --- a/include/hw/registerfields.h +++ b/include/hw/registerfields.h @@ -115,6 +115,28 @@ R_ ## reg ## _ ## field ## _LENGTH, _v.v); \ _d; }) =20 +/* + * Clear the specified field in storage if + * any field bits are set, else no changes made. Implements + * single/multi-bit `w1c` + * + */ +#define FIELD8_1CLEAR(storage, reg, field) \ + (FIELD_EX8(storage, reg, field) ? \ + FIELD_DP8(storage, reg, field, 0x00) : storage) + +#define FIELD16_1CLEAR(storage, reg, field) \ + (FIELD_EX16(storage, reg, field) ? \ + FIELD_DP16(storage, reg, field, 0x00) : storage) + +#define FIELD32_1CLEAR(storage, reg, field) \ + (FIELD_EX32(storage, reg, field) ? \ + FIELD_DP32(storage, reg, field, 0x00) : storage) + +#define FIELD64_1CLEAR(storage, reg, field) \ + (FIELD_EX64(storage, reg, field) ? \ + FIELD_DP64(storage, reg, field, 0x00) : storage) + #define FIELD_SDP8(storage, reg, field, val) ({ \ struct { \ signed int v:R_ ## reg ## _ ## field ## _LENGTH; \ --=20 2.37.3 From nobody Sat Feb 7 03:51:27 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=quarantine dis=quarantine) header.from=opensource.wdc.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1665986532016758.170528834032; 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s=dkim; t=1665985955; x=1668577956; bh=dnnqBhqj++5GfT8TR5 /jas2IcErOSKAqgO+V3K9+o5M=; b=N1f/td6VGpgNSzlT9eLHFzCSkp6t8jiE5g 9jIKOW1oBPp474cKPVILXUHyCtVn0ajLsfl8B/cLrSbJKms2AbYSLUW0Ah/TvYi6 UbJPH6Y+3DUI8iccCyH9Om7bP1v5gAAsCW80tbqNmFyaI/0DasgCyUI0CXlkEBD9 INoEb79GAx8e/dHWnvtBNVo0c7PyRtzmmZWX1yvUkPs4+5ZabMmEWh+9v2LTiX4H Ndmzjc2Tljt2Zl6XJCXswNsvyjVew9nwya9XLjRy4eVOHHdQ52gumCJzZ/qOQoiH 1OHR/de7ocN1EEb2hSI9G8sqGGQxYG4NbCflCeBHQ+XkRmgt+Kwg== X-Virus-Scanned: amavisd-new at usg-ed-osssrv.wdc.com From: Wilfred Mallawa To: alistair@alistair23.me, qemu-riscv@nongnu.org Cc: qemu-devel@nongnu.org, Wilfred Mallawa Subject: [PATCH v3 2/2] hw/ssi/ibex_spi: implement `FIELD32_1CLEAR` macro Date: Mon, 17 Oct 2022 15:49:55 +1000 Message-Id: <20221017054950.317584-3-wilfred.mallawa@opensource.wdc.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221017054950.317584-1-wilfred.mallawa@opensource.wdc.com> References: <20221017054950.317584-1-wilfred.mallawa@opensource.wdc.com> MIME-Version: 1.0 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=216.71.153.144; envelope-from=prvs=282226d84=wilfred.mallawa@opensource.wdc.com; helo=esa5.hgst.iphmx.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 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_MED=-2.3, SPF_HELO_PASS=-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" X-ZM-MESSAGEID: 1665986532989100001 Content-Type: text/plain; charset="utf-8" From: Wilfred Mallawa use the `FIELD32_1CLEAR` macro to implement register `rw1c` functionality to `ibex_spi`. This change was tested by running the `SPI_HOST` from TockOS. Signed-off-by: Wilfred Mallawa Reviewed-by: Alistair Francis --- hw/ssi/ibex_spi_host.c | 21 +++++++++------------ 1 file changed, 9 insertions(+), 12 deletions(-) diff --git a/hw/ssi/ibex_spi_host.c b/hw/ssi/ibex_spi_host.c index 57df462e3c..0a456cd1ed 100644 --- a/hw/ssi/ibex_spi_host.c +++ b/hw/ssi/ibex_spi_host.c @@ -342,7 +342,7 @@ static void ibex_spi_host_write(void *opaque, hwaddr ad= dr, { IbexSPIHostState *s =3D opaque; uint32_t val32 =3D val64; - uint32_t shift_mask =3D 0xff, status =3D 0, data =3D 0; + uint32_t shift_mask =3D 0xff, status =3D 0; uint8_t txqd_len; =20 trace_ibex_spi_host_write(addr, size, val64); @@ -355,12 +355,11 @@ static void ibex_spi_host_write(void *opaque, hwaddr = addr, case IBEX_SPI_HOST_INTR_STATE: /* rw1c status register */ if (FIELD_EX32(val32, INTR_STATE, ERROR)) { - data =3D FIELD_DP32(data, INTR_STATE, ERROR, 0); + s->regs[addr] =3D FIELD32_1CLEAR(s->regs[addr], INTR_STATE, ER= ROR); } if (FIELD_EX32(val32, INTR_STATE, SPI_EVENT)) { - data =3D FIELD_DP32(data, INTR_STATE, SPI_EVENT, 0); + s->regs[addr] =3D FIELD32_1CLEAR(s->regs[addr], INTR_STATE, SP= I_EVENT); } - s->regs[addr] =3D data; break; case IBEX_SPI_HOST_INTR_ENABLE: s->regs[addr] =3D val32; @@ -505,27 +504,25 @@ static void ibex_spi_host_write(void *opaque, hwaddr = addr, * When an error occurs, the corresponding bit must be cleared * here before issuing any further commands */ - status =3D s->regs[addr]; /* rw1c status register */ if (FIELD_EX32(val32, ERROR_STATUS, CMDBUSY)) { - status =3D FIELD_DP32(status, ERROR_STATUS, CMDBUSY, 0); + s->regs[addr] =3D FIELD32_1CLEAR(s->regs[addr], ERROR_STATUS, = CMDBUSY); } if (FIELD_EX32(val32, ERROR_STATUS, OVERFLOW)) { - status =3D FIELD_DP32(status, ERROR_STATUS, OVERFLOW, 0); + s->regs[addr] =3D FIELD32_1CLEAR(s->regs[addr], ERROR_STATUS, = OVERFLOW); } if (FIELD_EX32(val32, ERROR_STATUS, UNDERFLOW)) { - status =3D FIELD_DP32(status, ERROR_STATUS, UNDERFLOW, 0); + s->regs[addr] =3D FIELD32_1CLEAR(s->regs[addr], ERROR_STATUS, = UNDERFLOW); } if (FIELD_EX32(val32, ERROR_STATUS, CMDINVAL)) { - status =3D FIELD_DP32(status, ERROR_STATUS, CMDINVAL, 0); + s->regs[addr] =3D FIELD32_1CLEAR(s->regs[addr], ERROR_STATUS, = CMDINVAL); } if (FIELD_EX32(val32, ERROR_STATUS, CSIDINVAL)) { - status =3D FIELD_DP32(status, ERROR_STATUS, CSIDINVAL, 0); + s->regs[addr] =3D FIELD32_1CLEAR(s->regs[addr], ERROR_STATUS, = CSIDINVAL); } if (FIELD_EX32(val32, ERROR_STATUS, ACCESSINVAL)) { - status =3D FIELD_DP32(status, ERROR_STATUS, ACCESSINVAL, 0); + s->regs[addr] =3D FIELD32_1CLEAR(s->regs[addr], ERROR_STATUS, = ACCESSINVAL); } - s->regs[addr] =3D status; break; case IBEX_SPI_HOST_EVENT_ENABLE: /* Controls which classes of SPI events raise an interrupt. */ --=20 2.37.3