From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0266C3A257C for ; Tue, 21 Apr 2026 17:54:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.19 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776794102; cv=none; b=GXaSpg1m7jRX9usTBwjbjydPAI4Ad7IguMvCMGJGleE0Da09tZ00ntCbFwSHOwXj9zhyl4xPH3vIR/UEqVScb1WPXQV6oAUXYmLrwZ7apH1vj1MMeN3BMwr/X+VCUJTO4LNzDINRwanWmKMJ1aVaHxuUdSl1GZJhQR+Chtimw14= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776794102; c=relaxed/simple; bh=21Nmu5DErPUi5uJFOhMPfpCk7QS82TPLuGrGDAhoejg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nOkCJsoKCw963L8sG4a9rkiOZubVgcTAC3fDLxSfqkFdDn6o2cHkSn6dvkqnTaSdDTJEZl+lhx88aHYGCOZ9LjZDSu58TiD2zX+qlW3ojM507sqjanPHH7NOiAhhQ26UOPQbaDaYPizLhcUm9/JfJs11bsv+p9mPiBEFcGha4xQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=mW+dXJW/; arc=none smtp.client-ip=198.175.65.19 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="mW+dXJW/" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1776794097; x=1808330097; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=21Nmu5DErPUi5uJFOhMPfpCk7QS82TPLuGrGDAhoejg=; b=mW+dXJW/9fSjn3jtmkD6QTeexoOWE19fRFgHID+ghbCdUKxxA8nCWJ5U Af5hhddcbyCN8NTUjc2bu2fT999YxFAkeLFigU+n+gWcXxF/+Njx09zFe E1jsc/+bLXhWmmqcyULzn2LfltspA3SqQiXc5U70MnB4iXWV7wNM9Mq3c 4Fpx8R5q+oE8ja8cGmnbqpwY9YdJJG7IlngP1aT5Ez53/IOYKWs8BOhSU R3i+ACwzwS2z9Lst5zwBBNO0kCl6YA+xgZdBKxPug/zRNhqy6vEtA2PF/ o8zCNCSrDtOpQIAnPhxRv3m0Twh0vOxgaSbVGTe44KmQ/MiiZoUtmIDAi A==; X-CSE-ConnectionGUID: cZnhxaTlQ5SypsIpadgLyg== X-CSE-MsgGUID: Dq5qLHHYS6ylaAqtuEK8JA== X-IronPort-AV: E=McAfee;i="6800,10657,11763"; a="77651368" X-IronPort-AV: E=Sophos;i="6.23,192,1770624000"; d="scan'208";a="77651368" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Apr 2026 10:54:57 -0700 X-CSE-ConnectionGUID: Y9af/oA4ScOhSi1oBzVBgA== X-CSE-MsgGUID: 20Bl7tAkSja3/xqUhJ5c/w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,192,1770624000"; d="scan'208";a="227494897" Received: from hrotuna-mobl2.ger.corp.intel.com (HELO ahunter6-desk) ([10.245.244.242]) by fmviesa006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Apr 2026 10:54:55 -0700 From: Adrian Hunter To: alexandre.belloni@bootlin.com Cc: Frank.Li@nxp.com, linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH V2 05/16] i3c: mipi-i3c-hci: Move hci_dma_xfer_done() definition Date: Tue, 21 Apr 2026 20:54:24 +0300 Message-ID: <20260421175435.122094-6-adrian.hunter@intel.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260421175435.122094-1-adrian.hunter@intel.com> References: <20260421175435.122094-1-adrian.hunter@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Organization: Intel Finland Oy, Registered Address: c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Content-Transfer-Encoding: 8bit Move hci_dma_xfer_done() earlier in the file to avoid a forward declaration needed by a subsequent change. No functional change. Signed-off-by: Adrian Hunter Reviewed-by: Frank Li --- Changes in V2: Added Frank's Rev'd-by drivers/i3c/master/mipi-i3c-hci/dma.c | 98 +++++++++++++-------------- 1 file changed, 49 insertions(+), 49 deletions(-) diff --git a/drivers/i3c/master/mipi-i3c-hci/dma.c b/drivers/i3c/master/mipi-i3c-hci/dma.c index 28614fdbf558..c9852b85d6b0 100644 --- a/drivers/i3c/master/mipi-i3c-hci/dma.c +++ b/drivers/i3c/master/mipi-i3c-hci/dma.c @@ -545,6 +545,55 @@ static int hci_dma_queue_xfer(struct i3c_hci *hci, return 0; } +static void hci_dma_xfer_done(struct i3c_hci *hci, struct hci_rh_data *rh) +{ + u32 op1_val, op2_val, resp, *ring_resp; + unsigned int tid, done_ptr = rh->done_ptr; + unsigned int done_cnt = 0; + struct hci_xfer *xfer; + + for (;;) { + op2_val = rh_reg_read(RING_OPERATION2); + if (done_ptr == FIELD_GET(RING_OP2_CR_DEQ_PTR, op2_val)) + break; + + ring_resp = rh->resp + rh->resp_struct_sz * done_ptr; + resp = *ring_resp; + tid = RESP_TID(resp); + dev_dbg(&hci->master.dev, "resp = 0x%08x", resp); + + xfer = rh->src_xfers[done_ptr]; + if (!xfer) { + dev_dbg(&hci->master.dev, "orphaned ring entry"); + } else { + hci_dma_unmap_xfer(hci, xfer, 1); + rh->src_xfers[done_ptr] = NULL; + xfer->ring_entry = -1; + xfer->response = resp; + if (tid != xfer->cmd_tid) { + dev_err(&hci->master.dev, + "response tid=%d when expecting %d\n", + tid, xfer->cmd_tid); + /* TODO: do something about it? */ + } + if (xfer->completion) + complete(xfer->completion); + if (RESP_STATUS(resp)) + hci->enqueue_blocked = true; + } + + done_ptr = (done_ptr + 1) % rh->xfer_entries; + rh->done_ptr = done_ptr; + done_cnt += 1; + } + + rh->xfer_space += done_cnt; + op1_val = rh_reg_read(RING_OPERATION1); + op1_val &= ~RING_OP1_CR_SW_DEQ_PTR; + op1_val |= FIELD_PREP(RING_OP1_CR_SW_DEQ_PTR, done_ptr); + rh_reg_write(RING_OPERATION1, op1_val); +} + static void hci_dma_unblock_enqueue(struct i3c_hci *hci) { if (hci->enqueue_blocked) { @@ -636,55 +685,6 @@ static int hci_dma_handle_error(struct i3c_hci *hci, struct hci_xfer *xfer_list, return hci_dma_dequeue_xfer(hci, xfer_list, n) ? -EIO : 0; } -static void hci_dma_xfer_done(struct i3c_hci *hci, struct hci_rh_data *rh) -{ - u32 op1_val, op2_val, resp, *ring_resp; - unsigned int tid, done_ptr = rh->done_ptr; - unsigned int done_cnt = 0; - struct hci_xfer *xfer; - - for (;;) { - op2_val = rh_reg_read(RING_OPERATION2); - if (done_ptr == FIELD_GET(RING_OP2_CR_DEQ_PTR, op2_val)) - break; - - ring_resp = rh->resp + rh->resp_struct_sz * done_ptr; - resp = *ring_resp; - tid = RESP_TID(resp); - dev_dbg(&hci->master.dev, "resp = 0x%08x", resp); - - xfer = rh->src_xfers[done_ptr]; - if (!xfer) { - dev_dbg(&hci->master.dev, "orphaned ring entry"); - } else { - hci_dma_unmap_xfer(hci, xfer, 1); - rh->src_xfers[done_ptr] = NULL; - xfer->ring_entry = -1; - xfer->response = resp; - if (tid != xfer->cmd_tid) { - dev_err(&hci->master.dev, - "response tid=%d when expecting %d\n", - tid, xfer->cmd_tid); - /* TODO: do something about it? */ - } - if (xfer->completion) - complete(xfer->completion); - if (RESP_STATUS(resp)) - hci->enqueue_blocked = true; - } - - done_ptr = (done_ptr + 1) % rh->xfer_entries; - rh->done_ptr = done_ptr; - done_cnt += 1; - } - - rh->xfer_space += done_cnt; - op1_val = rh_reg_read(RING_OPERATION1); - op1_val &= ~RING_OP1_CR_SW_DEQ_PTR; - op1_val |= FIELD_PREP(RING_OP1_CR_SW_DEQ_PTR, done_ptr); - rh_reg_write(RING_OPERATION1, op1_val); -} - static int hci_dma_request_ibi(struct i3c_hci *hci, struct i3c_dev_desc *dev, const struct i3c_ibi_setup *req) { -- 2.51.0