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[SCSI] ufs: Separate PCI code into glue driver
This patch separates PCI code from ufshcd.c and makes it as a core driver module and adds a new file ufshcd-pci.c as PCI glue driver. [jejb: strip __devinit and devexit_p()] Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Namjae Jeon <linkinjeon@gmail.com> Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org> Tested-by: Maya Erez <merez@codeaurora.org> Signed-off-by: Vinayak Holikatti <vinholikatti@gmail.com> Signed-off-by: Santosh Yaraganavi <santoshsy@gmail.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Vinayak Holikatti
James Bottomley
parent
3b1d05807a
commit
e0eca63e34
@ -33,7 +33,27 @@
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# this program.
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# this program.
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config SCSI_UFSHCD
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config SCSI_UFSHCD
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tristate "Universal Flash Storage host controller driver"
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tristate "Universal Flash Storage Controller Driver Core"
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depends on PCI && SCSI
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depends on SCSI
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---help---
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---help---
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This is a generic driver which supports PCIe UFS Host controllers.
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This selects the support for UFS devices in Linux, say Y and make
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sure that you know the name of your UFS host adapter (the card
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inside your computer that "speaks" the UFS protocol, also
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called UFS Host Controller), because you will be asked for it.
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The module will be called ufshcd.
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To compile this driver as a module, choose M here and read
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<file:Documentation/scsi/ufs.txt>.
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However, do not compile this as a module if your root file system
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(the one containing the directory /) is located on a UFS device.
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config SCSI_UFSHCD_PCI
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tristate "PCI bus based UFS Controller support"
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depends on SCSI_UFSHCD && PCI
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---help---
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This selects the PCI UFS Host Controller Interface. Select this if
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you have UFS Host Controller with PCI Interface.
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If you have a controller with this interface, say Y or M here.
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If unsure, say N.
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@ -1,2 +1,3 @@
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# UFSHCD makefile
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# UFSHCD makefile
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obj-$(CONFIG_SCSI_UFSHCD) += ufshcd.o
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obj-$(CONFIG_SCSI_UFSHCD) += ufshcd.o
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obj-$(CONFIG_SCSI_UFSHCD_PCI) += ufshcd-pci.o
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211
drivers/scsi/ufs/ufshcd-pci.c
Normal file
211
drivers/scsi/ufs/ufshcd-pci.c
Normal file
@ -0,0 +1,211 @@
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/*
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* Universal Flash Storage Host controller PCI glue driver
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*
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* This code is based on drivers/scsi/ufs/ufshcd-pci.c
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* Copyright (C) 2011-2013 Samsung India Software Operations
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*
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* Authors:
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* Santosh Yaraganavi <santosh.sy@samsung.com>
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* Vinayak Holikatti <h.vinayak@samsung.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* See the COPYING file in the top-level directory or visit
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* <http://www.gnu.org/licenses/gpl-2.0.html>
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* This program is provided "AS IS" and "WITH ALL FAULTS" and
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* without warranty of any kind. You are solely responsible for
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* determining the appropriateness of using and distributing
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* the program and assume all risks associated with your exercise
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* of rights with respect to the program, including but not limited
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* to infringement of third party rights, the risks and costs of
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* program errors, damage to or loss of data, programs or equipment,
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* and unavailability or interruption of operations. Under no
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* circumstances will the contributor of this Program be liable for
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* any damages of any kind arising from your use or distribution of
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* this program.
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*/
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#include "ufshcd.h"
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#include <linux/pci.h>
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#ifdef CONFIG_PM
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/**
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* ufshcd_pci_suspend - suspend power management function
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* @pdev: pointer to PCI device handle
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* @state: power state
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*
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* Returns -ENOSYS
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*/
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static int ufshcd_pci_suspend(struct pci_dev *pdev, pm_message_t state)
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{
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/*
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* TODO:
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* 1. Call ufshcd_suspend
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* 2. Do bus specific power management
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*/
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return -ENOSYS;
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}
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/**
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* ufshcd_pci_resume - resume power management function
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* @pdev: pointer to PCI device handle
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*
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* Returns -ENOSYS
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*/
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static int ufshcd_pci_resume(struct pci_dev *pdev)
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{
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/*
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* TODO:
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* 1. Call ufshcd_resume.
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* 2. Do bus specific wake up
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*/
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return -ENOSYS;
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}
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#endif /* CONFIG_PM */
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/**
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* ufshcd_pci_shutdown - main function to put the controller in reset state
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* @pdev: pointer to PCI device handle
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*/
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static void ufshcd_pci_shutdown(struct pci_dev *pdev)
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{
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ufshcd_hba_stop((struct ufs_hba *)pci_get_drvdata(pdev));
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}
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/**
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* ufshcd_pci_remove - de-allocate PCI/SCSI host and host memory space
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* data structure memory
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* @pdev - pointer to PCI handle
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*/
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static void ufshcd_pci_remove(struct pci_dev *pdev)
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{
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struct ufs_hba *hba = pci_get_drvdata(pdev);
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disable_irq(pdev->irq);
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free_irq(pdev->irq, hba);
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ufshcd_remove(hba);
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pci_release_regions(pdev);
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pci_set_drvdata(pdev, NULL);
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pci_clear_master(pdev);
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pci_disable_device(pdev);
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}
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/**
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* ufshcd_set_dma_mask - Set dma mask based on the controller
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* addressing capability
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* @pdev: PCI device structure
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*
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* Returns 0 for success, non-zero for failure
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*/
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static int ufshcd_set_dma_mask(struct pci_dev *pdev)
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{
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int err;
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if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))
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&& !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
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return 0;
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err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
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if (!err)
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err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
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return err;
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}
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/**
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* ufshcd_pci_probe - probe routine of the driver
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* @pdev: pointer to PCI device handle
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* @id: PCI device id
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*
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* Returns 0 on success, non-zero value on failure
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*/
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static int
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ufshcd_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
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{
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struct ufs_hba *hba;
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void __iomem *mmio_base;
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int err;
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err = pci_enable_device(pdev);
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if (err) {
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dev_err(&pdev->dev, "pci_enable_device failed\n");
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goto out_error;
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}
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pci_set_master(pdev);
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err = pci_request_regions(pdev, UFSHCD);
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if (err < 0) {
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dev_err(&pdev->dev, "request regions failed\n");
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goto out_disable;
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}
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mmio_base = pci_ioremap_bar(pdev, 0);
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if (!mmio_base) {
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dev_err(&pdev->dev, "memory map failed\n");
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err = -ENOMEM;
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goto out_release_regions;
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}
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err = ufshcd_set_dma_mask(pdev);
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if (err) {
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dev_err(&pdev->dev, "set dma mask failed\n");
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goto out_iounmap;
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}
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err = ufshcd_init(&pdev->dev, &hba, mmio_base, pdev->irq);
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if (err) {
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dev_err(&pdev->dev, "Initialization failed\n");
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goto out_iounmap;
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}
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pci_set_drvdata(pdev, hba);
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return 0;
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out_iounmap:
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iounmap(mmio_base);
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out_release_regions:
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pci_release_regions(pdev);
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out_disable:
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pci_clear_master(pdev);
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pci_disable_device(pdev);
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out_error:
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return err;
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}
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static DEFINE_PCI_DEVICE_TABLE(ufshcd_pci_tbl) = {
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{ PCI_VENDOR_ID_SAMSUNG, 0xC00C, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
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{ } /* terminate list */
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};
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MODULE_DEVICE_TABLE(pci, ufshcd_pci_tbl);
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static struct pci_driver ufshcd_pci_driver = {
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.name = UFSHCD,
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.id_table = ufshcd_pci_tbl,
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.probe = ufshcd_pci_probe,
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.remove = ufshcd_pci_remove,
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.shutdown = ufshcd_pci_shutdown,
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#ifdef CONFIG_PM
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.suspend = ufshcd_pci_suspend,
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.resume = ufshcd_pci_resume,
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#endif
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};
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module_pci_driver(ufshcd_pci_driver);
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MODULE_AUTHOR("Santosh Yaragnavi <santosh.sy@samsung.com>");
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MODULE_AUTHOR("Vinayak Holikatti <h.vinayak@samsung.com>");
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MODULE_DESCRIPTION("UFS host controller PCI glue driver");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(UFSHCD_DRIVER_VERSION);
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@ -1,5 +1,5 @@
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/*
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/*
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* Universal Flash Storage Host controller driver
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* Universal Flash Storage Host controller driver Core
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*
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*
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* This code is based on drivers/scsi/ufs/ufshcd.c
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* This code is based on drivers/scsi/ufs/ufshcd.c
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* Copyright (C) 2011-2013 Samsung India Software Operations
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* Copyright (C) 2011-2013 Samsung India Software Operations
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@ -33,35 +33,7 @@
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* this program.
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* this program.
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*/
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*/
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#include <linux/module.h>
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#include "ufshcd.h"
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/workqueue.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/wait.h>
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#include <linux/bitops.h>
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#include <asm/irq.h>
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#include <asm/byteorder.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_tcq.h>
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#include <scsi/scsi_dbg.h>
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#include <scsi/scsi_eh.h>
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#include "ufs.h"
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#include "ufshci.h"
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#define UFSHCD "ufshcd"
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#define UFSHCD_DRIVER_VERSION "0.1"
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enum {
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enum {
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UFSHCD_MAX_CHANNEL = 0,
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UFSHCD_MAX_CHANNEL = 0,
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@ -91,124 +63,6 @@ enum {
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INT_AGGR_CONFIG,
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INT_AGGR_CONFIG,
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};
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};
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/**
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* struct uic_command - UIC command structure
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* @command: UIC command
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* @argument1: UIC command argument 1
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* @argument2: UIC command argument 2
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* @argument3: UIC command argument 3
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* @cmd_active: Indicate if UIC command is outstanding
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* @result: UIC command result
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*/
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struct uic_command {
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u32 command;
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u32 argument1;
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u32 argument2;
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u32 argument3;
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int cmd_active;
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int result;
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};
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/**
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* struct ufs_hba - per adapter private structure
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* @mmio_base: UFSHCI base register address
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* @ucdl_base_addr: UFS Command Descriptor base address
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* @utrdl_base_addr: UTP Transfer Request Descriptor base address
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* @utmrdl_base_addr: UTP Task Management Descriptor base address
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* @ucdl_dma_addr: UFS Command Descriptor DMA address
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* @utrdl_dma_addr: UTRDL DMA address
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* @utmrdl_dma_addr: UTMRDL DMA address
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* @host: Scsi_Host instance of the driver
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* @dev: device handle
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* @lrb: local reference block
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* @outstanding_tasks: Bits representing outstanding task requests
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* @outstanding_reqs: Bits representing outstanding transfer requests
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* @capabilities: UFS Controller Capabilities
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* @nutrs: Transfer Request Queue depth supported by controller
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* @nutmrs: Task Management Queue depth supported by controller
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* @ufs_version: UFS Version to which controller complies
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* @irq: Irq number of the controller
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* @active_uic_cmd: handle of active UIC command
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* @ufshcd_tm_wait_queue: wait queue for task management
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* @tm_condition: condition variable for task management
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* @ufshcd_state: UFSHCD states
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* @int_enable_mask: Interrupt Mask Bits
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* @uic_workq: Work queue for UIC completion handling
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* @feh_workq: Work queue for fatal controller error handling
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* @errors: HBA errors
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*/
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struct ufs_hba {
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void __iomem *mmio_base;
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/* Virtual memory reference */
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struct utp_transfer_cmd_desc *ucdl_base_addr;
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struct utp_transfer_req_desc *utrdl_base_addr;
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struct utp_task_req_desc *utmrdl_base_addr;
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/* DMA memory reference */
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dma_addr_t ucdl_dma_addr;
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dma_addr_t utrdl_dma_addr;
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dma_addr_t utmrdl_dma_addr;
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struct Scsi_Host *host;
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struct device *dev;
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struct ufshcd_lrb *lrb;
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unsigned long outstanding_tasks;
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unsigned long outstanding_reqs;
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u32 capabilities;
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int nutrs;
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int nutmrs;
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u32 ufs_version;
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unsigned int irq;
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||||||
struct uic_command active_uic_cmd;
|
|
||||||
wait_queue_head_t ufshcd_tm_wait_queue;
|
|
||||||
unsigned long tm_condition;
|
|
||||||
|
|
||||||
u32 ufshcd_state;
|
|
||||||
u32 int_enable_mask;
|
|
||||||
|
|
||||||
/* Work Queues */
|
|
||||||
struct work_struct uic_workq;
|
|
||||||
struct work_struct feh_workq;
|
|
||||||
|
|
||||||
/* HBA Errors */
|
|
||||||
u32 errors;
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* struct ufshcd_lrb - local reference block
|
|
||||||
* @utr_descriptor_ptr: UTRD address of the command
|
|
||||||
* @ucd_cmd_ptr: UCD address of the command
|
|
||||||
* @ucd_rsp_ptr: Response UPIU address for this command
|
|
||||||
* @ucd_prdt_ptr: PRDT address of the command
|
|
||||||
* @cmd: pointer to SCSI command
|
|
||||||
* @sense_buffer: pointer to sense buffer address of the SCSI command
|
|
||||||
* @sense_bufflen: Length of the sense buffer
|
|
||||||
* @scsi_status: SCSI status of the command
|
|
||||||
* @command_type: SCSI, UFS, Query.
|
|
||||||
* @task_tag: Task tag of the command
|
|
||||||
* @lun: LUN of the command
|
|
||||||
*/
|
|
||||||
struct ufshcd_lrb {
|
|
||||||
struct utp_transfer_req_desc *utr_descriptor_ptr;
|
|
||||||
struct utp_upiu_cmd *ucd_cmd_ptr;
|
|
||||||
struct utp_upiu_rsp *ucd_rsp_ptr;
|
|
||||||
struct ufshcd_sg_entry *ucd_prdt_ptr;
|
|
||||||
|
|
||||||
struct scsi_cmnd *cmd;
|
|
||||||
u8 *sense_buffer;
|
|
||||||
unsigned int sense_bufflen;
|
|
||||||
int scsi_status;
|
|
||||||
|
|
||||||
int command_type;
|
|
||||||
int task_tag;
|
|
||||||
unsigned int lun;
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* ufshcd_get_ufs_version - Get the UFS version supported by the HBA
|
* ufshcd_get_ufs_version - Get the UFS version supported by the HBA
|
||||||
* @hba - Pointer to adapter instance
|
* @hba - Pointer to adapter instance
|
||||||
@ -421,15 +275,6 @@ static void ufshcd_enable_run_stop_reg(struct ufs_hba *hba)
|
|||||||
REG_UTP_TRANSFER_REQ_LIST_RUN_STOP));
|
REG_UTP_TRANSFER_REQ_LIST_RUN_STOP));
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
|
||||||
* ufshcd_hba_stop - Send controller to reset state
|
|
||||||
* @hba: per adapter instance
|
|
||||||
*/
|
|
||||||
static inline void ufshcd_hba_stop(struct ufs_hba *hba)
|
|
||||||
{
|
|
||||||
writel(CONTROLLER_DISABLE, (hba->mmio_base + REG_CONTROLLER_ENABLE));
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* ufshcd_hba_start - Start controller initialization sequence
|
* ufshcd_hba_start - Start controller initialization sequence
|
||||||
* @hba: per adapter instance
|
* @hba: per adapter instance
|
||||||
@ -1680,15 +1525,6 @@ static struct scsi_host_template ufshcd_driver_template = {
|
|||||||
.can_queue = UFSHCD_CAN_QUEUE,
|
.can_queue = UFSHCD_CAN_QUEUE,
|
||||||
};
|
};
|
||||||
|
|
||||||
/**
|
|
||||||
* ufshcd_pci_shutdown - main function to put the controller in reset state
|
|
||||||
* @pdev: pointer to PCI device handle
|
|
||||||
*/
|
|
||||||
static void ufshcd_pci_shutdown(struct pci_dev *pdev)
|
|
||||||
{
|
|
||||||
ufshcd_hba_stop((struct ufs_hba *)pci_get_drvdata(pdev));
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* ufshcd_suspend - suspend power management function
|
* ufshcd_suspend - suspend power management function
|
||||||
* @hba: per adapter instance
|
* @hba: per adapter instance
|
||||||
@ -1732,43 +1568,6 @@ int ufshcd_resume(struct ufs_hba *hba)
|
|||||||
}
|
}
|
||||||
EXPORT_SYMBOL_GPL(ufshcd_resume);
|
EXPORT_SYMBOL_GPL(ufshcd_resume);
|
||||||
|
|
||||||
#ifdef CONFIG_PM
|
|
||||||
/**
|
|
||||||
* ufshcd_pci_suspend - suspend power management function
|
|
||||||
* @pdev: pointer to PCI device handle
|
|
||||||
* @state: power state
|
|
||||||
*
|
|
||||||
* Returns -ENOSYS
|
|
||||||
*/
|
|
||||||
static int ufshcd_pci_suspend(struct pci_dev *pdev, pm_message_t state)
|
|
||||||
{
|
|
||||||
/*
|
|
||||||
* TODO:
|
|
||||||
* 1. Call ufshcd_suspend
|
|
||||||
* 2. Do bus specific power management
|
|
||||||
*/
|
|
||||||
|
|
||||||
return -ENOSYS;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* ufshcd_pci_resume - resume power management function
|
|
||||||
* @pdev: pointer to PCI device handle
|
|
||||||
*
|
|
||||||
* Returns -ENOSYS
|
|
||||||
*/
|
|
||||||
static int ufshcd_pci_resume(struct pci_dev *pdev)
|
|
||||||
{
|
|
||||||
/*
|
|
||||||
* TODO:
|
|
||||||
* 1. Call ufshcd_resume
|
|
||||||
* 2. Do bus specific wake up
|
|
||||||
*/
|
|
||||||
|
|
||||||
return -ENOSYS;
|
|
||||||
}
|
|
||||||
#endif /* CONFIG_PM */
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* ufshcd_hba_free - free allocated memory for
|
* ufshcd_hba_free - free allocated memory for
|
||||||
* host memory space data structures
|
* host memory space data structures
|
||||||
@ -1798,44 +1597,6 @@ void ufshcd_remove(struct ufs_hba *hba)
|
|||||||
}
|
}
|
||||||
EXPORT_SYMBOL_GPL(ufshcd_remove);
|
EXPORT_SYMBOL_GPL(ufshcd_remove);
|
||||||
|
|
||||||
/**
|
|
||||||
* ufshcd_pci_remove - de-allocate PCI/SCSI host and host memory space
|
|
||||||
* data structure memory
|
|
||||||
* @pdev - pointer to PCI handle
|
|
||||||
*/
|
|
||||||
static void ufshcd_pci_remove(struct pci_dev *pdev)
|
|
||||||
{
|
|
||||||
struct ufs_hba *hba = pci_get_drvdata(pdev);
|
|
||||||
|
|
||||||
disable_irq(pdev->irq);
|
|
||||||
free_irq(pdev->irq, hba);
|
|
||||||
ufshcd_remove(hba);
|
|
||||||
pci_release_regions(pdev);
|
|
||||||
pci_set_drvdata(pdev, NULL);
|
|
||||||
pci_clear_master(pdev);
|
|
||||||
pci_disable_device(pdev);
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* ufshcd_set_dma_mask - Set dma mask based on the controller
|
|
||||||
* addressing capability
|
|
||||||
* @pdev: PCI device structure
|
|
||||||
*
|
|
||||||
* Returns 0 for success, non-zero for failure
|
|
||||||
*/
|
|
||||||
static int ufshcd_set_dma_mask(struct pci_dev *pdev)
|
|
||||||
{
|
|
||||||
int err;
|
|
||||||
|
|
||||||
if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))
|
|
||||||
&& !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
|
|
||||||
return 0;
|
|
||||||
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
|
|
||||||
if (!err)
|
|
||||||
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
|
|
||||||
return err;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* ufshcd_init - Driver initialization routine
|
* ufshcd_init - Driver initialization routine
|
||||||
* @dev: pointer to device handle
|
* @dev: pointer to device handle
|
||||||
@ -1952,90 +1713,8 @@ int ufshcd_init(struct device *dev, struct ufs_hba **hba_handle,
|
|||||||
}
|
}
|
||||||
EXPORT_SYMBOL_GPL(ufshcd_init);
|
EXPORT_SYMBOL_GPL(ufshcd_init);
|
||||||
|
|
||||||
/**
|
|
||||||
* ufshcd_pci_probe - probe routine of the driver
|
|
||||||
* @pdev: pointer to PCI device handle
|
|
||||||
* @id: PCI device id
|
|
||||||
*
|
|
||||||
* Returns 0 on success, non-zero value on failure
|
|
||||||
*/
|
|
||||||
static int ufshcd_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
|
|
||||||
{
|
|
||||||
struct ufs_hba *hba;
|
|
||||||
void __iomem *mmio_base;
|
|
||||||
int err;
|
|
||||||
|
|
||||||
err = pci_enable_device(pdev);
|
|
||||||
if (err) {
|
|
||||||
dev_err(&pdev->dev, "pci_enable_device failed\n");
|
|
||||||
goto out_error;
|
|
||||||
}
|
|
||||||
|
|
||||||
pci_set_master(pdev);
|
|
||||||
|
|
||||||
err = pci_request_regions(pdev, UFSHCD);
|
|
||||||
if (err < 0) {
|
|
||||||
dev_err(&pdev->dev, "request regions failed\n");
|
|
||||||
goto out_disable;
|
|
||||||
}
|
|
||||||
|
|
||||||
mmio_base = pci_ioremap_bar(pdev, 0);
|
|
||||||
if (!mmio_base) {
|
|
||||||
dev_err(&pdev->dev, "memory map failed\n");
|
|
||||||
err = -ENOMEM;
|
|
||||||
goto out_release_regions;
|
|
||||||
}
|
|
||||||
|
|
||||||
err = ufshcd_set_dma_mask(pdev);
|
|
||||||
if (err) {
|
|
||||||
dev_err(&pdev->dev, "set dma mask failed\n");
|
|
||||||
goto out_iounmap;
|
|
||||||
}
|
|
||||||
|
|
||||||
err = ufshcd_init(&pdev->dev, &hba, mmio_base, pdev->irq);
|
|
||||||
if (err) {
|
|
||||||
dev_err(&pdev->dev, "Initialization failed\n");
|
|
||||||
goto out_iounmap;
|
|
||||||
}
|
|
||||||
|
|
||||||
pci_set_drvdata(pdev, hba);
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
|
|
||||||
out_iounmap:
|
|
||||||
iounmap(mmio_base);
|
|
||||||
out_release_regions:
|
|
||||||
pci_release_regions(pdev);
|
|
||||||
out_disable:
|
|
||||||
pci_clear_master(pdev);
|
|
||||||
pci_disable_device(pdev);
|
|
||||||
out_error:
|
|
||||||
return err;
|
|
||||||
}
|
|
||||||
|
|
||||||
static DEFINE_PCI_DEVICE_TABLE(ufshcd_pci_tbl) = {
|
|
||||||
{ PCI_VENDOR_ID_SAMSUNG, 0xC00C, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
|
|
||||||
{ } /* terminate list */
|
|
||||||
};
|
|
||||||
|
|
||||||
MODULE_DEVICE_TABLE(pci, ufshcd_pci_tbl);
|
|
||||||
|
|
||||||
static struct pci_driver ufshcd_pci_driver = {
|
|
||||||
.name = UFSHCD,
|
|
||||||
.id_table = ufshcd_pci_tbl,
|
|
||||||
.probe = ufshcd_pci_probe,
|
|
||||||
.remove = ufshcd_pci_remove,
|
|
||||||
.shutdown = ufshcd_pci_shutdown,
|
|
||||||
#ifdef CONFIG_PM
|
|
||||||
.suspend = ufshcd_pci_suspend,
|
|
||||||
.resume = ufshcd_pci_resume,
|
|
||||||
#endif
|
|
||||||
};
|
|
||||||
|
|
||||||
module_pci_driver(ufshcd_pci_driver);
|
|
||||||
|
|
||||||
MODULE_AUTHOR("Santosh Yaragnavi <santosh.sy@samsung.com>");
|
MODULE_AUTHOR("Santosh Yaragnavi <santosh.sy@samsung.com>");
|
||||||
MODULE_AUTHOR("Vinayak Holikatti <h.vinayak@samsung.com>");
|
MODULE_AUTHOR("Vinayak Holikatti <h.vinayak@samsung.com>");
|
||||||
MODULE_DESCRIPTION("Generic UFS host controller driver");
|
MODULE_DESCRIPTION("Generic UFS host controller driver Core");
|
||||||
MODULE_LICENSE("GPL");
|
MODULE_LICENSE("GPL");
|
||||||
MODULE_VERSION(UFSHCD_DRIVER_VERSION);
|
MODULE_VERSION(UFSHCD_DRIVER_VERSION);
|
||||||
|
|||||||
202
drivers/scsi/ufs/ufshcd.h
Normal file
202
drivers/scsi/ufs/ufshcd.h
Normal file
@ -0,0 +1,202 @@
|
|||||||
|
/*
|
||||||
|
* Universal Flash Storage Host controller driver
|
||||||
|
*
|
||||||
|
* This code is based on drivers/scsi/ufs/ufshcd.h
|
||||||
|
* Copyright (C) 2011-2013 Samsung India Software Operations
|
||||||
|
*
|
||||||
|
* Authors:
|
||||||
|
* Santosh Yaraganavi <santosh.sy@samsung.com>
|
||||||
|
* Vinayak Holikatti <h.vinayak@samsung.com>
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU General Public License
|
||||||
|
* as published by the Free Software Foundation; either version 2
|
||||||
|
* of the License, or (at your option) any later version.
|
||||||
|
* See the COPYING file in the top-level directory or visit
|
||||||
|
* <http://www.gnu.org/licenses/gpl-2.0.html>
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* This program is provided "AS IS" and "WITH ALL FAULTS" and
|
||||||
|
* without warranty of any kind. You are solely responsible for
|
||||||
|
* determining the appropriateness of using and distributing
|
||||||
|
* the program and assume all risks associated with your exercise
|
||||||
|
* of rights with respect to the program, including but not limited
|
||||||
|
* to infringement of third party rights, the risks and costs of
|
||||||
|
* program errors, damage to or loss of data, programs or equipment,
|
||||||
|
* and unavailability or interruption of operations. Under no
|
||||||
|
* circumstances will the contributor of this Program be liable for
|
||||||
|
* any damages of any kind arising from your use or distribution of
|
||||||
|
* this program.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef _UFSHCD_H
|
||||||
|
#define _UFSHCD_H
|
||||||
|
|
||||||
|
#include <linux/module.h>
|
||||||
|
#include <linux/kernel.h>
|
||||||
|
#include <linux/init.h>
|
||||||
|
#include <linux/interrupt.h>
|
||||||
|
#include <linux/io.h>
|
||||||
|
#include <linux/delay.h>
|
||||||
|
#include <linux/slab.h>
|
||||||
|
#include <linux/spinlock.h>
|
||||||
|
#include <linux/workqueue.h>
|
||||||
|
#include <linux/errno.h>
|
||||||
|
#include <linux/types.h>
|
||||||
|
#include <linux/wait.h>
|
||||||
|
#include <linux/bitops.h>
|
||||||
|
#include <linux/pm_runtime.h>
|
||||||
|
#include <linux/clk.h>
|
||||||
|
|
||||||
|
#include <asm/irq.h>
|
||||||
|
#include <asm/byteorder.h>
|
||||||
|
#include <scsi/scsi.h>
|
||||||
|
#include <scsi/scsi_cmnd.h>
|
||||||
|
#include <scsi/scsi_host.h>
|
||||||
|
#include <scsi/scsi_tcq.h>
|
||||||
|
#include <scsi/scsi_dbg.h>
|
||||||
|
#include <scsi/scsi_eh.h>
|
||||||
|
|
||||||
|
#include "ufs.h"
|
||||||
|
#include "ufshci.h"
|
||||||
|
|
||||||
|
#define UFSHCD "ufshcd"
|
||||||
|
#define UFSHCD_DRIVER_VERSION "0.2"
|
||||||
|
|
||||||
|
/**
|
||||||
|
* struct uic_command - UIC command structure
|
||||||
|
* @command: UIC command
|
||||||
|
* @argument1: UIC command argument 1
|
||||||
|
* @argument2: UIC command argument 2
|
||||||
|
* @argument3: UIC command argument 3
|
||||||
|
* @cmd_active: Indicate if UIC command is outstanding
|
||||||
|
* @result: UIC command result
|
||||||
|
*/
|
||||||
|
struct uic_command {
|
||||||
|
u32 command;
|
||||||
|
u32 argument1;
|
||||||
|
u32 argument2;
|
||||||
|
u32 argument3;
|
||||||
|
int cmd_active;
|
||||||
|
int result;
|
||||||
|
};
|
||||||
|
|
||||||
|
/**
|
||||||
|
* struct ufshcd_lrb - local reference block
|
||||||
|
* @utr_descriptor_ptr: UTRD address of the command
|
||||||
|
* @ucd_cmd_ptr: UCD address of the command
|
||||||
|
* @ucd_rsp_ptr: Response UPIU address for this command
|
||||||
|
* @ucd_prdt_ptr: PRDT address of the command
|
||||||
|
* @cmd: pointer to SCSI command
|
||||||
|
* @sense_buffer: pointer to sense buffer address of the SCSI command
|
||||||
|
* @sense_bufflen: Length of the sense buffer
|
||||||
|
* @scsi_status: SCSI status of the command
|
||||||
|
* @command_type: SCSI, UFS, Query.
|
||||||
|
* @task_tag: Task tag of the command
|
||||||
|
* @lun: LUN of the command
|
||||||
|
*/
|
||||||
|
struct ufshcd_lrb {
|
||||||
|
struct utp_transfer_req_desc *utr_descriptor_ptr;
|
||||||
|
struct utp_upiu_cmd *ucd_cmd_ptr;
|
||||||
|
struct utp_upiu_rsp *ucd_rsp_ptr;
|
||||||
|
struct ufshcd_sg_entry *ucd_prdt_ptr;
|
||||||
|
|
||||||
|
struct scsi_cmnd *cmd;
|
||||||
|
u8 *sense_buffer;
|
||||||
|
unsigned int sense_bufflen;
|
||||||
|
int scsi_status;
|
||||||
|
|
||||||
|
int command_type;
|
||||||
|
int task_tag;
|
||||||
|
unsigned int lun;
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* struct ufs_hba - per adapter private structure
|
||||||
|
* @mmio_base: UFSHCI base register address
|
||||||
|
* @ucdl_base_addr: UFS Command Descriptor base address
|
||||||
|
* @utrdl_base_addr: UTP Transfer Request Descriptor base address
|
||||||
|
* @utmrdl_base_addr: UTP Task Management Descriptor base address
|
||||||
|
* @ucdl_dma_addr: UFS Command Descriptor DMA address
|
||||||
|
* @utrdl_dma_addr: UTRDL DMA address
|
||||||
|
* @utmrdl_dma_addr: UTMRDL DMA address
|
||||||
|
* @host: Scsi_Host instance of the driver
|
||||||
|
* @dev: device handle
|
||||||
|
* @lrb: local reference block
|
||||||
|
* @outstanding_tasks: Bits representing outstanding task requests
|
||||||
|
* @outstanding_reqs: Bits representing outstanding transfer requests
|
||||||
|
* @capabilities: UFS Controller Capabilities
|
||||||
|
* @nutrs: Transfer Request Queue depth supported by controller
|
||||||
|
* @nutmrs: Task Management Queue depth supported by controller
|
||||||
|
* @ufs_version: UFS Version to which controller complies
|
||||||
|
* @irq: Irq number of the controller
|
||||||
|
* @active_uic_cmd: handle of active UIC command
|
||||||
|
* @ufshcd_tm_wait_queue: wait queue for task management
|
||||||
|
* @tm_condition: condition variable for task management
|
||||||
|
* @ufshcd_state: UFSHCD states
|
||||||
|
* @int_enable_mask: Interrupt Mask Bits
|
||||||
|
* @uic_workq: Work queue for UIC completion handling
|
||||||
|
* @feh_workq: Work queue for fatal controller error handling
|
||||||
|
* @errors: HBA errors
|
||||||
|
*/
|
||||||
|
struct ufs_hba {
|
||||||
|
void __iomem *mmio_base;
|
||||||
|
|
||||||
|
/* Virtual memory reference */
|
||||||
|
struct utp_transfer_cmd_desc *ucdl_base_addr;
|
||||||
|
struct utp_transfer_req_desc *utrdl_base_addr;
|
||||||
|
struct utp_task_req_desc *utmrdl_base_addr;
|
||||||
|
|
||||||
|
/* DMA memory reference */
|
||||||
|
dma_addr_t ucdl_dma_addr;
|
||||||
|
dma_addr_t utrdl_dma_addr;
|
||||||
|
dma_addr_t utmrdl_dma_addr;
|
||||||
|
|
||||||
|
struct Scsi_Host *host;
|
||||||
|
struct device *dev;
|
||||||
|
|
||||||
|
struct ufshcd_lrb *lrb;
|
||||||
|
|
||||||
|
unsigned long outstanding_tasks;
|
||||||
|
unsigned long outstanding_reqs;
|
||||||
|
|
||||||
|
u32 capabilities;
|
||||||
|
int nutrs;
|
||||||
|
int nutmrs;
|
||||||
|
u32 ufs_version;
|
||||||
|
unsigned int irq;
|
||||||
|
|
||||||
|
struct uic_command active_uic_cmd;
|
||||||
|
wait_queue_head_t ufshcd_tm_wait_queue;
|
||||||
|
unsigned long tm_condition;
|
||||||
|
|
||||||
|
u32 ufshcd_state;
|
||||||
|
u32 int_enable_mask;
|
||||||
|
|
||||||
|
/* Work Queues */
|
||||||
|
struct work_struct uic_workq;
|
||||||
|
struct work_struct feh_workq;
|
||||||
|
|
||||||
|
/* HBA Errors */
|
||||||
|
u32 errors;
|
||||||
|
};
|
||||||
|
|
||||||
|
int ufshcd_init(struct device *, struct ufs_hba ** , void __iomem * ,
|
||||||
|
unsigned int);
|
||||||
|
void ufshcd_remove(struct ufs_hba *);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* ufshcd_hba_stop - Send controller to reset state
|
||||||
|
* @hba: per adapter instance
|
||||||
|
*/
|
||||||
|
static inline void ufshcd_hba_stop(struct ufs_hba *hba)
|
||||||
|
{
|
||||||
|
writel(CONTROLLER_DISABLE, (hba->mmio_base + REG_CONTROLLER_ENABLE));
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif /* End of Header */
|
||||||
Loading…
Reference in New Issue
Block a user