On 3/10/2016 9:06 PM, Vinod Koul wrote:

On Thu, Feb 04, 2016 at 11:34:36PM -0500, Sinan Kaya wrote:

quoted

+
+#define EVRE_SIZE			16	/* each EVRE is 16 bytes */
+
+#define TRCA_CTRLSTS_OFFSET		0x000
+#define TRCA_RING_LOW_OFFSET		0x008
+#define TRCA_RING_HIGH_OFFSET		0x00C
+#define TRCA_RING_LEN_OFFSET		0x010
+#define TRCA_READ_PTR_OFFSET		0x018
+#define TRCA_WRITE_PTR_OFFSET		0x020
+#define TRCA_DOORBELL_OFFSET		0x400
+
+#define EVCA_CTRLSTS_OFFSET		0x000
+#define EVCA_INTCTRL_OFFSET		0x004
+#define EVCA_RING_LOW_OFFSET		0x008
+#define EVCA_RING_HIGH_OFFSET		0x00C
+#define EVCA_RING_LEN_OFFSET		0x010
+#define EVCA_READ_PTR_OFFSET		0x018
+#define EVCA_WRITE_PTR_OFFSET		0x020
+#define EVCA_DOORBELL_OFFSET		0x400
+
+#define EVCA_IRQ_STAT_OFFSET		0x100
+#define EVCA_IRQ_CLR_OFFSET		0x108
+#define EVCA_IRQ_EN_OFFSET		0x110
+
+#define EVRE_CFG_IDX			0
+#define EVRE_LEN_IDX			1
+#define EVRE_DEST_LOW_IDX		2
+#define EVRE_DEST_HI_IDX		3
+
+#define EVRE_ERRINFO_BIT_POS		24
+#define EVRE_CODE_BIT_POS		28
+
+#define EVRE_ERRINFO_MASK		GENMASK(3, 0)
+#define EVRE_CODE_MASK			GENMASK(3, 0)

These are rest here are not namespace properly...

If I understood it right, you want me to prefix them with as HIDMA_xyz.
Correct?

quoted

+static int hidma_ll_enable(struct hidma_lldev *lldev)
+{
+	u32 val;
+	int ret;
+
+	val = readl(lldev->evca + EVCA_CTRLSTS_OFFSET);
+	val &= ~(CH_CONTROL_MASK << 16);
+	val |= CH_ENABLE << 16;
+	writel(val, lldev->evca + EVCA_CTRLSTS_OFFSET);
+
+	ret = readl_poll_timeout(lldev->evca + EVCA_CTRLSTS_OFFSET, val,
+				 (HIDMA_CH_STATE(val) == CH_ENABLED) ||
+				 (HIDMA_CH_STATE(val) == CH_RUNNING), 1000,
+				 10000);
+	if (ret) {
+		dev_err(lldev->dev, "event channel did not get enabled\n");
+		return ret;
+	}
+
+	val = readl(lldev->trca + TRCA_CTRLSTS_OFFSET);
+	val &= ~(CH_CONTROL_MASK << 16);
+	val |= CH_ENABLE << 16;
+	writel(val, lldev->trca + TRCA_CTRLSTS_OFFSET);
+
+	ret = readl_poll_timeout(lldev->trca + TRCA_CTRLSTS_OFFSET, val,
+				 (HIDMA_CH_STATE(val) == CH_ENABLED) ||
+				 (HIDMA_CH_STATE(val) == CH_RUNNING), 1000,
+				 10000);

first arg for readl_poll_timeout is accessor fn to do read, which doesnt
seem to be here... so what did i miss?

quoted

+void hidma_ll_queue_request(struct hidma_lldev *lldev, u32 tre_ch)
+{
+	struct hidma_tre *tre;
+	unsigned long flags;
+
+	tre = &lldev->trepool[tre_ch];
+
+	/* copy the TRE into its location in the TRE ring */
+	spin_lock_irqsave(&lldev->lock, flags);
+	tre->tre_index = lldev->tre_write_offset / TRE_SIZE;
+	lldev->pending_tre_list[tre->tre_index] = tre;
+	memcpy(lldev->tre_ring + lldev->tre_write_offset, &tre->tre_local[0],
+	       TRE_SIZE);
+	lldev->tx_status_list[tre->idx].err_code = 0;
+	lldev->tx_status_list[tre->idx].err_info = 0;
+	tre->queued = 1;
+	lldev->pending_tre_count++;

Is this the only one without alignment? I couldn't understand what you mean by 
above one?

quoted

+	lldev->tre_write_offset = (lldev->tre_write_offset + TRE_SIZE)
+	    % lldev->tre_ring_size;

These and above one should be right justfied per coding style

-- 
Sinan Kaya
Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project