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=?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 , "nabihestefan@google.com" , "komlodi@google.com" , Patrick Venture , Stephen Longfield Subject: [PATCH v7 16/22] hw/i3c/dw-i3c: Add controller resets Thread-Topic: [PATCH v7 16/22] hw/i3c/dw-i3c: Add controller resets Thread-Index: AQHcpfwxZqY8aKxhW0iIS5Ef0Cfjqw== Date: Wed, 25 Feb 2026 02:12:29 +0000 Message-ID: <20260225021158.1586584-17-jamin_lin@aspeedtech.com> References: <20260225021158.1586584-1-jamin_lin@aspeedtech.com> In-Reply-To: <20260225021158.1586584-1-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; x-ms-publictraffictype: Email x-ms-traffictypediagnostic: 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TF8S/ulUyWvBKT6Qc8paPZ1j1roDpmJFzeXe7y3DaZjKIcfwrpgERJKmVJ/fQpRQ5EFSEqq5pH8NcolOD5oGIOOGBmuSuBZ35nWUtbQC3Ps= X-MS-Exchange-Transport-CrossTenantHeadersStamped: KL1PR0601MB5702 Received-SPF: pass client-ip=2a01:111:f403:c406::3; envelope-from=jamin_lin@aspeedtech.com; helo=OS8PR02CU002.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_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-arm@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-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org Sender: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org Adds behavior to the device reset register.=0A= =0A= Signed-off-by: Joe Komlodi =0A= Reviewed-by: Patrick Venture =0A= Reviewed-by: Stephen Longfield =0A= Reviewed-by: Jamin Lin =0A= Signed-off-by: Jamin Lin =0A= ---=0A= hw/i3c/dw-i3c.c | 117 ++++++++++++++++++++++++++++++++++++++++++++=0A= hw/i3c/trace-events | 1 +=0A= 2 files changed, 118 insertions(+)=0A= =0A= diff --git a/hw/i3c/dw-i3c.c b/hw/i3c/dw-i3c.c=0A= index b6ec0d9579..d742458129 100644=0A= --- a/hw/i3c/dw-i3c.c=0A= +++ b/hw/i3c/dw-i3c.c=0A= @@ -860,6 +860,122 @@ static void dw_i3c_intr_force_w(DWI3C *s, uint32_t va= l)=0A= dw_i3c_update_irq(s);=0A= }=0A= =0A= +static void dw_i3c_cmd_queue_reset(DWI3C *s)=0A= +{=0A= + fifo32_reset(&s->cmd_queue);=0A= +=0A= + ARRAY_FIELD_DP32(s->regs, QUEUE_STATUS_LEVEL, CMD_QUEUE_EMPTY_LOC,=0A= + fifo32_num_free(&s->cmd_queue));=0A= + uint8_t empty_threshold =3D ARRAY_FIELD_EX32(s->regs, QUEUE_THLD_CTRL,= =0A= + CMD_BUF_EMPTY_THLD);=0A= + if (fifo32_num_free(&s->cmd_queue) >=3D empty_threshold) {=0A= + ARRAY_FIELD_DP32(s->regs, INTR_STATUS, CMD_QUEUE_RDY, 1);=0A= + dw_i3c_update_irq(s);=0A= + };=0A= +}=0A= +=0A= +static void dw_i3c_resp_queue_reset(DWI3C *s)=0A= +{=0A= + fifo32_reset(&s->resp_queue);=0A= +=0A= + ARRAY_FIELD_DP32(s->regs, QUEUE_STATUS_LEVEL, RESP_BUF_BLR,=0A= + fifo32_num_used(&s->resp_queue));=0A= + /*=0A= + * This interrupt will always be cleared because the threshold is a mi= nimum=0A= + * of 1 and the queue size is 0.=0A= + */=0A= + ARRAY_FIELD_DP32(s->regs, INTR_STATUS, RESP_RDY, 0);=0A= + dw_i3c_update_irq(s);=0A= +}=0A= +=0A= +static void dw_i3c_ibi_queue_reset(DWI3C *s)=0A= +{=0A= + fifo32_reset(&s->ibi_queue);=0A= +=0A= + ARRAY_FIELD_DP32(s->regs, QUEUE_STATUS_LEVEL, IBI_BUF_BLR,=0A= + fifo32_num_used(&s->resp_queue));=0A= + /*=0A= + * This interrupt will always be cleared because the threshold is a mi= nimum=0A= + * of 1 and the queue size is 0.=0A= + */=0A= + ARRAY_FIELD_DP32(s->regs, INTR_STATUS, IBI_THLD, 0);=0A= + dw_i3c_update_irq(s);=0A= +}=0A= +=0A= +static void dw_i3c_tx_queue_reset(DWI3C *s)=0A= +{=0A= + fifo32_reset(&s->tx_queue);=0A= +=0A= + ARRAY_FIELD_DP32(s->regs, DATA_BUFFER_STATUS_LEVEL, TX_BUF_EMPTY_LOC,= =0A= + fifo32_num_free(&s->tx_queue));=0A= + /* TX buf is empty, so this interrupt will always be set. */=0A= + ARRAY_FIELD_DP32(s->regs, INTR_STATUS, TX_THLD, 1);=0A= + dw_i3c_update_irq(s);=0A= +}=0A= +=0A= +static void dw_i3c_rx_queue_reset(DWI3C *s)=0A= +{=0A= + fifo32_reset(&s->rx_queue);=0A= +=0A= + ARRAY_FIELD_DP32(s->regs, DATA_BUFFER_STATUS_LEVEL, RX_BUF_BLR,=0A= + fifo32_num_used(&s->resp_queue));=0A= + /*=0A= + * This interrupt will always be cleared because the threshold is a mi= nimum=0A= + * of 1 and the queue size is 0.=0A= + */=0A= + ARRAY_FIELD_DP32(s->regs, INTR_STATUS, RX_THLD, 0);=0A= + dw_i3c_update_irq(s);=0A= +}=0A= +=0A= +static void dw_i3c_reset(DeviceState *dev)=0A= +{=0A= + DWI3C *s =3D DW_I3C(dev);=0A= + trace_dw_i3c_reset(s->cfg.id);=0A= +=0A= + memcpy(s->regs, dw_i3c_resets, sizeof(s->regs));=0A= + /*=0A= + * The user config for these may differ from our resets array, set the= m=0A= + * manually.=0A= + */=0A= + ARRAY_FIELD_DP32(s->regs, DEVICE_ADDR_TABLE_POINTER, ADDR,=0A= + s->cfg.dev_addr_table_pointer);=0A= + ARRAY_FIELD_DP32(s->regs, DEVICE_ADDR_TABLE_POINTER, DEPTH,=0A= + s->cfg.dev_addr_table_depth);=0A= + ARRAY_FIELD_DP32(s->regs, DEV_CHAR_TABLE_POINTER,=0A= + P_DEV_CHAR_TABLE_START_ADDR,=0A= + s->cfg.dev_char_table_pointer);=0A= + ARRAY_FIELD_DP32(s->regs, DEV_CHAR_TABLE_POINTER, DEV_CHAR_TABLE_DEPTH= ,=0A= + s->cfg.dev_char_table_depth);=0A= +=0A= + dw_i3c_cmd_queue_reset(s);=0A= + dw_i3c_resp_queue_reset(s);=0A= + dw_i3c_ibi_queue_reset(s);=0A= + dw_i3c_tx_queue_reset(s);=0A= + dw_i3c_rx_queue_reset(s);=0A= +}=0A= +=0A= +static void dw_i3c_reset_ctrl_w(DWI3C *s, uint32_t val)=0A= +{=0A= + if (FIELD_EX32(val, RESET_CTRL, CORE_RESET)) {=0A= + dw_i3c_reset(DEVICE(s));=0A= + }=0A= + if (FIELD_EX32(val, RESET_CTRL, CMD_QUEUE_RESET)) {=0A= + dw_i3c_cmd_queue_reset(s);=0A= + }=0A= + if (FIELD_EX32(val, RESET_CTRL, RESP_QUEUE_RESET)) {=0A= + dw_i3c_resp_queue_reset(s);=0A= + }=0A= + if (FIELD_EX32(val, RESET_CTRL, TX_BUF_RESET)) {=0A= + dw_i3c_tx_queue_reset(s);=0A= + }=0A= + if (FIELD_EX32(val, RESET_CTRL, RX_BUF_RESET)) {=0A= + dw_i3c_rx_queue_reset(s);=0A= + }=0A= + if (FIELD_EX32(val, RESET_CTRL, IBI_QUEUE_RESET)) {=0A= + dw_i3c_ibi_queue_reset(s);=0A= + }=0A= +}=0A= +=0A= static uint32_t dw_i3c_pop_rx(DWI3C *s)=0A= {=0A= if (fifo32_is_empty(&s->rx_queue)) {=0A= @@ -1617,6 +1733,7 @@ static void dw_i3c_write(void *opaque, hwaddr offset,= uint64_t value,=0A= dw_i3c_cmd_queue_port_w(s, val32);=0A= break;=0A= case R_RESET_CTRL:=0A= + dw_i3c_reset_ctrl_w(s, val32);=0A= break;=0A= case R_INTR_STATUS:=0A= dw_i3c_intr_status_w(s, val32);=0A= diff --git a/hw/i3c/trace-events b/hw/i3c/trace-events=0A= index a262fcce39..39f33d9a50 100644=0A= --- a/hw/i3c/trace-events=0A= +++ b/hw/i3c/trace-events=0A= @@ -11,6 +11,7 @@ dw_i3c_send(uint32_t deviceid, uint32_t num_bytes) "I3C D= ev[%u] send %" PRId32 "=0A= dw_i3c_recv_data(uint32_t deviceid, uint32_t num_bytes) "I3C Dev[%u] recv = %" PRId32 " bytes from bus"=0A= dw_i3c_ibi_recv(uint32_t deviceid, uint8_t ibi_byte) "I3C Dev[%u] recv IBI= byte 0x%" PRIx8=0A= dw_i3c_ibi_handle(uint32_t deviceid, uint8_t addr, bool rnw) "I3C Dev[%u] = handle IBI from address 0x%" PRIx8 " RnW=3D%d"=0A= +dw_i3c_reset(uint32_t deviceid) "I3C Dev[%u] reset"=0A= dw_i3c_pop_rx(uint32_t deviceid, uint32_t data) "I3C Dev[%u] pop 0x%" PRIx= 32 " from RX FIFO"=0A= dw_i3c_resp_queue_push(uint32_t deviceid, uint32_t data) "I3C Dev[%u] push= 0x%" PRIx32 " to response queue"=0A= dw_i3c_push_tx(uint32_t deviceid, uint32_t data) "I3C Dev[%u] push 0x%" PR= Ix32 " to TX FIFO"=0A= -- =0A= 2.43.0=0A=