linux-kernel - [PATCH v2 19/22] scsi: hisi_sas: add get_wideport_bitmap_v3

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Message-ID: <1495713911-80476-20-git-send-email-john.garry@huawei.com>
Date:   Thu, 25 May 2017 20:05:08 +0800
From:   John Garry <john.garry@...wei.com>
To:     <jejb@...ux.vnet.ibm.com>, <martin.petersen@...cle.com>
CC:     <john.garry2@...l.dcu.ie>, <linuxarm@...wei.com>,
        <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <arnd@...db.de>, Xiang Chen <chenxiang66@...ilicon.com>,
        John Garry <john.garry@...wei.com>
Subject: [PATCH v2 19/22] scsi: hisi_sas: add get_wideport_bitmap_v3_hw()

From: Xiang Chen <chenxiang66@...ilicon.com>

Add code for interface get_wide_port_bitmap_v3_hw().

Signed-off-by: John Garry <john.garry@...wei.com>
Signed-off-by: Xiang Chen <chenxiang66@...ilicon.com>
---
 drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 6273368..4169e6a 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -616,6 +616,18 @@ static void sl_notify_v3_hw(struct hisi_hba *hisi_hba, int phy_no)
 	hisi_sas_phy_write32(hisi_hba, phy_no, SL_CONTROL, sl_control);
 }
 
+static int get_wideport_bitmap_v3_hw(struct hisi_hba *hisi_hba, int port_id)
+{
+	int i, bitmap = 0;
+	u32 phy_port_num_ma = hisi_sas_read32(hisi_hba, PHY_PORT_NUM_MA);
+
+	for (i = 0; i < hisi_hba->n_phy; i++)
+		if (((phy_port_num_ma >> (i * 4)) & 0xf) == port_id)
+			bitmap |= 1 << i;
+
+	return bitmap;
+}
+
 /**
  * The callpath to this function and upto writing the write
  * queue pointer should be safe from interruption.
@@ -1721,6 +1733,7 @@ static void hisi_sas_v3_remove(struct pci_dev *pdev)
 	.setup_itct = setup_itct_v3_hw,
 	.max_command_entries = HISI_SAS_COMMAND_ENTRIES_V3_HW,
 	.sl_notify = sl_notify_v3_hw,
+	.get_wideport_bitmap = get_wideport_bitmap_v3_hw,
 	.complete_hdr_size = sizeof(struct hisi_sas_complete_v3_hdr),
 	.free_device = free_device_v3_hw,
 	.prep_ssp = prep_ssp_v3_hw,
-- 
1.9.1