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path: root/drivers/crypto/ccp/ccp-pci.c
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Diffstat (limited to 'drivers/crypto/ccp/ccp-pci.c')
-rw-r--r--drivers/crypto/ccp/ccp-pci.c356
1 files changed, 0 insertions, 356 deletions
diff --git a/drivers/crypto/ccp/ccp-pci.c b/drivers/crypto/ccp/ccp-pci.c
deleted file mode 100644
index e880d4cf4ada..000000000000
--- a/drivers/crypto/ccp/ccp-pci.c
+++ /dev/null
@@ -1,356 +0,0 @@
-/*
- * AMD Cryptographic Coprocessor (CCP) driver
- *
- * Copyright (C) 2013,2016 Advanced Micro Devices, Inc.
- *
- * Author: Tom Lendacky <thomas.lendacky@amd.com>
- * Author: Gary R Hook <gary.hook@amd.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/device.h>
-#include <linux/pci.h>
-#include <linux/pci_ids.h>
-#include <linux/dma-mapping.h>
-#include <linux/kthread.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
-#include <linux/delay.h>
-#include <linux/ccp.h>
-
-#include "ccp-dev.h"
-
-#define MSIX_VECTORS 2
-
-struct ccp_msix {
- u32 vector;
- char name[16];
-};
-
-struct ccp_pci {
- int msix_count;
- struct ccp_msix msix[MSIX_VECTORS];
-};
-
-static int ccp_get_msix_irqs(struct ccp_device *ccp)
-{
- struct ccp_pci *ccp_pci = ccp->dev_specific;
- struct device *dev = ccp->dev;
- struct pci_dev *pdev = to_pci_dev(dev);
- struct msix_entry msix_entry[MSIX_VECTORS];
- unsigned int name_len = sizeof(ccp_pci->msix[0].name) - 1;
- int v, ret;
-
- for (v = 0; v < ARRAY_SIZE(msix_entry); v++)
- msix_entry[v].entry = v;
-
- ret = pci_enable_msix_range(pdev, msix_entry, 1, v);
- if (ret < 0)
- return ret;
-
- ccp_pci->msix_count = ret;
- for (v = 0; v < ccp_pci->msix_count; v++) {
- /* Set the interrupt names and request the irqs */
- snprintf(ccp_pci->msix[v].name, name_len, "%s-%u",
- ccp->name, v);
- ccp_pci->msix[v].vector = msix_entry[v].vector;
- ret = request_irq(ccp_pci->msix[v].vector,
- ccp->vdata->perform->irqhandler,
- 0, ccp_pci->msix[v].name, dev);
- if (ret) {
- dev_notice(dev, "unable to allocate MSI-X IRQ (%d)\n",
- ret);
- goto e_irq;
- }
- }
- ccp->use_tasklet = true;
-
- return 0;
-
-e_irq:
- while (v--)
- free_irq(ccp_pci->msix[v].vector, dev);
-
- pci_disable_msix(pdev);
-
- ccp_pci->msix_count = 0;
-
- return ret;
-}
-
-static int ccp_get_msi_irq(struct ccp_device *ccp)
-{
- struct device *dev = ccp->dev;
- struct pci_dev *pdev = to_pci_dev(dev);
- int ret;
-
- ret = pci_enable_msi(pdev);
- if (ret)
- return ret;
-
- ccp->irq = pdev->irq;
- ret = request_irq(ccp->irq, ccp->vdata->perform->irqhandler, 0,
- ccp->name, dev);
- if (ret) {
- dev_notice(dev, "unable to allocate MSI IRQ (%d)\n", ret);
- goto e_msi;
- }
- ccp->use_tasklet = true;
-
- return 0;
-
-e_msi:
- pci_disable_msi(pdev);
-
- return ret;
-}
-
-static int ccp_get_irqs(struct ccp_device *ccp)
-{
- struct device *dev = ccp->dev;
- int ret;
-
- ret = ccp_get_msix_irqs(ccp);
- if (!ret)
- return 0;
-
- /* Couldn't get MSI-X vectors, try MSI */
- dev_notice(dev, "could not enable MSI-X (%d), trying MSI\n", ret);
- ret = ccp_get_msi_irq(ccp);
- if (!ret)
- return 0;
-
- /* Couldn't get MSI interrupt */
- dev_notice(dev, "could not enable MSI (%d)\n", ret);
-
- return ret;
-}
-
-static void ccp_free_irqs(struct ccp_device *ccp)
-{
- struct ccp_pci *ccp_pci = ccp->dev_specific;
- struct device *dev = ccp->dev;
- struct pci_dev *pdev = to_pci_dev(dev);
-
- if (ccp_pci->msix_count) {
- while (ccp_pci->msix_count--)
- free_irq(ccp_pci->msix[ccp_pci->msix_count].vector,
- dev);
- pci_disable_msix(pdev);
- } else if (ccp->irq) {
- free_irq(ccp->irq, dev);
- pci_disable_msi(pdev);
- }
- ccp->irq = 0;
-}
-
-static int ccp_find_mmio_area(struct ccp_device *ccp)
-{
- struct device *dev = ccp->dev;
- struct pci_dev *pdev = to_pci_dev(dev);
- resource_size_t io_len;
- unsigned long io_flags;
-
- io_flags = pci_resource_flags(pdev, ccp->vdata->bar);
- io_len = pci_resource_len(pdev, ccp->vdata->bar);
- if ((io_flags & IORESOURCE_MEM) &&
- (io_len >= (ccp->vdata->offset + 0x800)))
- return ccp->vdata->bar;
-
- return -EIO;
-}
-
-static int ccp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
-{
- struct ccp_device *ccp;
- struct ccp_pci *ccp_pci;
- struct device *dev = &pdev->dev;
- unsigned int bar;
- int ret;
-
- ret = -ENOMEM;
- ccp = ccp_alloc_struct(dev);
- if (!ccp)
- goto e_err;
-
- ccp_pci = devm_kzalloc(dev, sizeof(*ccp_pci), GFP_KERNEL);
- if (!ccp_pci)
- goto e_err;
-
- ccp->dev_specific = ccp_pci;
- ccp->vdata = (struct ccp_vdata *)id->driver_data;
- if (!ccp->vdata || !ccp->vdata->version) {
- ret = -ENODEV;
- dev_err(dev, "missing driver data\n");
- goto e_err;
- }
- ccp->get_irq = ccp_get_irqs;
- ccp->free_irq = ccp_free_irqs;
-
- ret = pci_request_regions(pdev, "ccp");
- if (ret) {
- dev_err(dev, "pci_request_regions failed (%d)\n", ret);
- goto e_err;
- }
-
- ret = pci_enable_device(pdev);
- if (ret) {
- dev_err(dev, "pci_enable_device failed (%d)\n", ret);
- goto e_regions;
- }
-
- pci_set_master(pdev);
-
- ret = ccp_find_mmio_area(ccp);
- if (ret < 0)
- goto e_device;
- bar = ret;
-
- ret = -EIO;
- ccp->io_map = pci_iomap(pdev, bar, 0);
- if (!ccp->io_map) {
- dev_err(dev, "pci_iomap failed\n");
- goto e_device;
- }
- ccp->io_regs = ccp->io_map + ccp->vdata->offset;
-
- ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48));
- if (ret) {
- ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
- if (ret) {
- dev_err(dev, "dma_set_mask_and_coherent failed (%d)\n",
- ret);
- goto e_iomap;
- }
- }
-
- dev_set_drvdata(dev, ccp);
-
- if (ccp->vdata->setup)
- ccp->vdata->setup(ccp);
-
- ret = ccp->vdata->perform->init(ccp);
- if (ret)
- goto e_iomap;
-
- dev_notice(dev, "enabled\n");
-
- return 0;
-
-e_iomap:
- pci_iounmap(pdev, ccp->io_map);
-
-e_device:
- pci_disable_device(pdev);
-
-e_regions:
- pci_release_regions(pdev);
-
-e_err:
- dev_notice(dev, "initialization failed\n");
- return ret;
-}
-
-static void ccp_pci_remove(struct pci_dev *pdev)
-{
- struct device *dev = &pdev->dev;
- struct ccp_device *ccp = dev_get_drvdata(dev);
-
- if (!ccp)
- return;
-
- ccp->vdata->perform->destroy(ccp);
-
- pci_iounmap(pdev, ccp->io_map);
-
- pci_disable_device(pdev);
-
- pci_release_regions(pdev);
-
- dev_notice(dev, "disabled\n");
-}
-
-#ifdef CONFIG_PM
-static int ccp_pci_suspend(struct pci_dev *pdev, pm_message_t state)
-{
- struct device *dev = &pdev->dev;
- struct ccp_device *ccp = dev_get_drvdata(dev);
- unsigned long flags;
- unsigned int i;
-
- spin_lock_irqsave(&ccp->cmd_lock, flags);
-
- ccp->suspending = 1;
-
- /* Wake all the queue kthreads to prepare for suspend */
- for (i = 0; i < ccp->cmd_q_count; i++)
- wake_up_process(ccp->cmd_q[i].kthread);
-
- spin_unlock_irqrestore(&ccp->cmd_lock, flags);
-
- /* Wait for all queue kthreads to say they're done */
- while (!ccp_queues_suspended(ccp))
- wait_event_interruptible(ccp->suspend_queue,
- ccp_queues_suspended(ccp));
-
- return 0;
-}
-
-static int ccp_pci_resume(struct pci_dev *pdev)
-{
- struct device *dev = &pdev->dev;
- struct ccp_device *ccp = dev_get_drvdata(dev);
- unsigned long flags;
- unsigned int i;
-
- spin_lock_irqsave(&ccp->cmd_lock, flags);
-
- ccp->suspending = 0;
-
- /* Wake up all the kthreads */
- for (i = 0; i < ccp->cmd_q_count; i++) {
- ccp->cmd_q[i].suspended = 0;
- wake_up_process(ccp->cmd_q[i].kthread);
- }
-
- spin_unlock_irqrestore(&ccp->cmd_lock, flags);
-
- return 0;
-}
-#endif
-
-static const struct pci_device_id ccp_pci_table[] = {
- { PCI_VDEVICE(AMD, 0x1537), (kernel_ulong_t)&ccpv3 },
- { PCI_VDEVICE(AMD, 0x1456), (kernel_ulong_t)&ccpv5a },
- { PCI_VDEVICE(AMD, 0x1468), (kernel_ulong_t)&ccpv5b },
- /* Last entry must be zero */
- { 0, }
-};
-MODULE_DEVICE_TABLE(pci, ccp_pci_table);
-
-static struct pci_driver ccp_pci_driver = {
- .name = "ccp",
- .id_table = ccp_pci_table,
- .probe = ccp_pci_probe,
- .remove = ccp_pci_remove,
-#ifdef CONFIG_PM
- .suspend = ccp_pci_suspend,
- .resume = ccp_pci_resume,
-#endif
-};
-
-int ccp_pci_init(void)
-{
- return pci_register_driver(&ccp_pci_driver);
-}
-
-void ccp_pci_exit(void)
-{
- pci_unregister_driver(&ccp_pci_driver);
-}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-03 18:40:45 +0300