From mboxrd@z Thu Jan 1 00:00:00 1970 From: j00310691 Subject: [PATCH v2 13/23] hisi_sas: add v2 phy down handler Date: Tue, 26 Jan 2016 01:22:02 +0800 Message-ID: <1453742532-53092-14-git-send-email-john.garry@huawei.com> References: <1453742532-53092-1-git-send-email-john.garry@huawei.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1453742532-53092-1-git-send-email-john.garry@huawei.com> Sender: linux-scsi-owner@vger.kernel.org To: JBottomley@odin.com, martin.petersen@oracle.com, robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org Cc: linuxarm@huawei.com, zhangfei.gao@linaro.org, xuwei5@hisilicon.com, john.garry2@mail.dcu.ie, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, arnd@arndb.de, devicetree@vger.kernel.org, John Garry List-Id: devicetree@vger.kernel.org From: John Garry Signed-off-by: John Garry --- drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 49 ++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c index a7b83bd..35ce7b6 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c @@ -628,6 +628,29 @@ static void sl_notify_v2_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_v2_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); + u32 phy_state = hisi_sas_read32(hisi_hba, PHY_STATE); + + for (i = 0; i < (hisi_hba->n_phy < 9 ? hisi_hba->n_phy : 8); i++) + if (phy_state & 1 << i) + if (((phy_port_num_ma >> (i * 4)) & 0xf) == port_id) + bitmap |= 1 << i; + + if (hisi_hba->n_phy == 9) { + u32 port_state = hisi_sas_read32(hisi_hba, PORT_STATE); + + if (phy_state & 1 << 8) + if (((port_state & PORT_STATE_PHY8_PORT_NUM_MSK) >> + PORT_STATE_PHY8_PORT_NUM_OFF) == port_id) + bitmap |= 1 << 9; + } + + return bitmap; +} + static int phy_up_v2_hw(int phy_no, struct hisi_hba *hisi_hba) { int i, res = 0; @@ -705,6 +728,25 @@ end: return res; } +static int phy_down_v2_hw(int phy_no, struct hisi_hba *hisi_hba) +{ + int res = 0; + u32 phy_cfg, phy_state; + + hisi_sas_phy_write32(hisi_hba, phy_no, PHYCTRL_NOT_RDY_MSK, 1); + + phy_cfg = hisi_sas_phy_read32(hisi_hba, phy_no, PHY_CFG); + + phy_state = hisi_sas_read32(hisi_hba, PHY_STATE); + + hisi_sas_phy_down(hisi_hba, phy_no, (phy_state & 1 << phy_no) ? 1 : 0); + + hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT0, CHL_INT0_NOT_RDY_MSK); + hisi_sas_phy_write32(hisi_hba, phy_no, PHYCTRL_NOT_RDY_MSK, 0); + + return res; +} + static irqreturn_t int_phy_updown_v2_hw(int irq_no, void *p) { struct hisi_hba *hisi_hba = p; @@ -726,6 +768,12 @@ static irqreturn_t int_phy_updown_v2_hw(int irq_no, void *p) goto end; } + if (irq_value & CHL_INT0_NOT_RDY_MSK) + /* phy down */ + if (phy_down_v2_hw(phy_no, hisi_hba)) { + res = IRQ_NONE; + goto end; + } } irq_msk >>= 1; phy_no++; @@ -796,6 +844,7 @@ static int hisi_sas_v2_init(struct hisi_hba *hisi_hba) static const struct hisi_sas_hw hisi_sas_v2_hw = { .hw_init = hisi_sas_v2_init, .sl_notify = sl_notify_v2_hw, + .get_wideport_bitmap = get_wideport_bitmap_v2_hw, .max_command_entries = HISI_SAS_COMMAND_ENTRIES_V2_HW, .complete_hdr_size = sizeof(struct hisi_sas_complete_v2_hdr), }; -- 1.9.1