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bh=w3Vyh9nMfjUlddy2WHRpBAPuYAohqFPPdut9xn61tt8=; b=Ex7xC4lRDNOpJywM9bjQvsA5NyMoSNPJ+MLekBK1DI5FasVGI9OfLl4vcjDRzzJD5d/ALT/R8Uaia8lZ/HubgCsLrYzxg6Bh3e75rv+s5thQlwFV1ain13q5dv8dtSROudqwgjrp6teQ8EYQsZn1cfrCL5XWh+OEEoHCnnR7tVI20YhtfSDpkEN4ShFYvZ7RQRoFT4n90JQmxXSzjY9flIfaUWTRedpAPfQNTnTJ4L3UVyNf432qhD1fHW2O7Ejqf4c7D8Bnh0XIt3OzkKzufXCRGBfCt6oIvjnosUuVUkawmOWCluNKCUCPvoCKhiiRTdDtntHyADbn7O6IPdMc0w== From: Jamin Lin To: Paolo Bonzini , Peter Maydell , =?iso-8859-1?Q?C=E9dric_Le_Goater?= , Steven Lee , Troy Lee , Andrew Jeffery , Joel Stanley , =?iso-8859-1?Q?Marc-Andr=E9_Lureau?= , =?iso-8859-1?Q?Daniel_P=2E_Berrang=E9?= , =?iso-8859-1?Q?Philippe_Mathieu-Daud=E9?= , "open list:All patches CC here" , "open list:ARM TCG CPUs" CC: Jamin Lin , Troy Lee , Kane Chen , Joe Komlodi , Patrick Venture , Hao Wu Subject: [PATCH v3 11/20] hw/i3c/dw-i3c: Add IRQ MMIO behavior Thread-Topic: [PATCH v3 11/20] hw/i3c/dw-i3c: Add IRQ MMIO behavior Thread-Index: AQHclxdwS8nRR9ze6Uqk472dKK371w== Date: Fri, 6 Feb 2026 03:19:43 +0000 Message-ID: <20260206031926.3227848-12-jamin_lin@aspeedtech.com> References: <20260206031926.3227848-1-jamin_lin@aspeedtech.com> In-Reply-To: <20260206031926.3227848-1-jamin_lin@aspeedtech.com> Accept-Language: zh-TW, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=aspeedtech.com; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a01:111:f403:c405::5; envelope-from=jamin_lin@aspeedtech.com; helo=TYPPR03CU001.outbound.protection.outlook.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, 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: qemu development 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 @aspeedtech.com) X-ZM-MESSAGEID: 1770348095123154100 Content-Type: text/plain; charset="utf-8" Signed-off-by: Joe Komlodi Signed-off-by: Jamin Lin Reviewed-by: Patrick Venture Reviewed-by: Hao Wu Reviewed-by: Jamin Lin --- hw/i3c/dw-i3c.c | 56 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) diff --git a/hw/i3c/dw-i3c.c b/hw/i3c/dw-i3c.c index 9dc71aa3d8..bda8ab5d51 100644 --- a/hw/i3c/dw-i3c.c +++ b/hw/i3c/dw-i3c.c @@ -17,6 +17,7 @@ #include "qapi/error.h" #include "migration/vmstate.h" #include "trace.h" +#include "hw/core/irq.h" =20 REG32(DEVICE_CTRL, 0x00) FIELD(DEVICE_CTRL, I3C_BROADCAST_ADDR_INC, 0, 1) @@ -335,6 +336,46 @@ static const uint32_t dw_i3c_ro[DW_I3C_NR_REGS] =3D { [R_SLAVE_CONFIG] =3D 0xffffffff, }; =20 +static void dw_i3c_update_irq(DWI3C *s) +{ + bool level =3D !!(s->regs[R_INTR_SIGNAL_EN] & s->regs[R_INTR_STATUS]); + qemu_set_irq(s->irq, level); +} + +static uint32_t dw_i3c_intr_status_r(DWI3C *s) +{ + /* Only return the status whose corresponding EN bits are set. */ + return s->regs[R_INTR_STATUS] & s->regs[R_INTR_STATUS_EN]; +} + +static void dw_i3c_intr_status_w(DWI3C *s, uint32_t val) +{ + /* INTR_STATUS[13:5] is w1c, other bits are RO. */ + val &=3D 0x3fe0; + s->regs[R_INTR_STATUS] &=3D ~val; + + dw_i3c_update_irq(s); +} + +static void dw_i3c_intr_status_en_w(DWI3C *s, uint32_t val) +{ + s->regs[R_INTR_STATUS_EN] =3D val; + dw_i3c_update_irq(s); +} + +static void dw_i3c_intr_signal_en_w(DWI3C *s, uint32_t val) +{ + s->regs[R_INTR_SIGNAL_EN] =3D val; + dw_i3c_update_irq(s); +} + +static void dw_i3c_intr_force_w(DWI3C *s, uint32_t val) +{ + /* INTR_FORCE is WO, just set the corresponding INTR_STATUS bits. */ + s->regs[R_INTR_STATUS] =3D val; + dw_i3c_update_irq(s); +} + static uint64_t dw_i3c_read(void *opaque, hwaddr offset, unsigned size) { DWI3C *s =3D DW_I3C(opaque); @@ -348,6 +389,9 @@ static uint64_t dw_i3c_read(void *opaque, hwaddr offset= , unsigned size) case R_INTR_FORCE: value =3D 0; break; + case R_INTR_STATUS: + value =3D dw_i3c_intr_status_r(s); + break; default: value =3D s->regs[addr]; break; @@ -392,6 +436,18 @@ static void dw_i3c_write(void *opaque, hwaddr offset, = uint64_t value, break; case R_RESET_CTRL: break; + case R_INTR_STATUS: + dw_i3c_intr_status_w(s, val32); + break; + case R_INTR_STATUS_EN: + dw_i3c_intr_status_en_w(s, val32); + break; + case R_INTR_SIGNAL_EN: + dw_i3c_intr_signal_en_w(s, val32); + break; + case R_INTR_FORCE: + dw_i3c_intr_force_w(s, val32); + break; default: s->regs[addr] =3D val32; break; --=20 2.43.0