X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fchar%2Ftpm%2Ftpm_nsc.c;h=680a8e3318877b6c6bd7f09ae61d46abd5605871;hb=78b9c0f91cf908616b8f9f356e1d1220e727ea88;hp=1a45e7dfc13b29c827a514b6428b551cd94c9024;hpb=38b22b6e9f46ab8f73ef5734f0e0a000766a9258;p=linux-2.6 diff --git a/drivers/char/tpm/tpm_nsc.c b/drivers/char/tpm/tpm_nsc.c index 1a45e7dfc1..680a8e3318 100644 --- a/drivers/char/tpm/tpm_nsc.c +++ b/drivers/char/tpm/tpm_nsc.c @@ -19,11 +19,11 @@ * */ +#include #include "tpm.h" /* National definitions */ enum tpm_nsc_addr{ - TPM_NSC_BASE = 0x360, TPM_NSC_IRQ = 0x07, TPM_NSC_BASE0_HI = 0x60, TPM_NSC_BASE0_LO = 0x61, @@ -56,6 +56,7 @@ enum tpm_nsc_status { NSC_STATUS_RDY = 0x10, /* ready to receive command */ NSC_STATUS_IBR = 0x20 /* ready to receive data */ }; + /* command bits */ enum tpm_nsc_cmd_mode { NSC_COMMAND_NORMAL = 0x01, /* normal mode */ @@ -111,7 +112,7 @@ static int nsc_wait_for_ready(struct tpm_chip *chip) } while (time_before(jiffies, stop)); - dev_info(&chip->pci_dev->dev, "wait for ready failed\n"); + dev_info(chip->dev, "wait for ready failed\n"); return -EBUSY; } @@ -127,12 +128,12 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count) return -EIO; if (wait_for_stat(chip, NSC_STATUS_F0, NSC_STATUS_F0, &data) < 0) { - dev_err(&chip->pci_dev->dev, "F0 timeout\n"); + dev_err(chip->dev, "F0 timeout\n"); return -EIO; } if ((data = inb(chip->vendor->base + NSC_DATA)) != NSC_COMMAND_NORMAL) { - dev_err(&chip->pci_dev->dev, "not in normal mode (0x%x)\n", + dev_err(chip->dev, "not in normal mode (0x%x)\n", data); return -EIO; } @@ -141,7 +142,7 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count) for (p = buffer; p < &buffer[count]; p++) { if (wait_for_stat (chip, NSC_STATUS_OBF, NSC_STATUS_OBF, &data) < 0) { - dev_err(&chip->pci_dev->dev, + dev_err(chip->dev, "OBF timeout (while reading data)\n"); return -EIO; } @@ -150,12 +151,13 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count) *p = inb(chip->vendor->base + NSC_DATA); } - if ((data & NSC_STATUS_F0) == 0) { - dev_err(&chip->pci_dev->dev, "F0 not set\n"); + if ((data & NSC_STATUS_F0) == 0 && + (wait_for_stat(chip, NSC_STATUS_F0, NSC_STATUS_F0, &data) < 0)) { + dev_err(chip->dev, "F0 not set\n"); return -EIO; } if ((data = inb(chip->vendor->base + NSC_DATA)) != NSC_COMMAND_EOC) { - dev_err(&chip->pci_dev->dev, + dev_err(chip->dev, "expected end of command(0x%x)\n", data); return -EIO; } @@ -186,19 +188,19 @@ static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count) return -EIO; if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) { - dev_err(&chip->pci_dev->dev, "IBF timeout\n"); + dev_err(chip->dev, "IBF timeout\n"); return -EIO; } outb(NSC_COMMAND_NORMAL, chip->vendor->base + NSC_COMMAND); if (wait_for_stat(chip, NSC_STATUS_IBR, NSC_STATUS_IBR, &data) < 0) { - dev_err(&chip->pci_dev->dev, "IBR timeout\n"); + dev_err(chip->dev, "IBR timeout\n"); return -EIO; } for (i = 0; i < count; i++) { if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) { - dev_err(&chip->pci_dev->dev, + dev_err(chip->dev, "IBF timeout (while writing data)\n"); return -EIO; } @@ -206,7 +208,7 @@ static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count) } if (wait_for_stat(chip, NSC_STATUS_IBF, 0, &data) < 0) { - dev_err(&chip->pci_dev->dev, "IBF timeout\n"); + dev_err(chip->dev, "IBF timeout\n"); return -EIO; } outb(NSC_COMMAND_EOC, chip->vendor->base + NSC_COMMAND); @@ -219,6 +221,11 @@ static void tpm_nsc_cancel(struct tpm_chip *chip) outb(NSC_COMMAND_CANCEL, chip->vendor->base + NSC_COMMAND); } +static u8 tpm_nsc_status(struct tpm_chip *chip) +{ + return inb(chip->vendor->base + NSC_STATUS); +} + static struct file_operations nsc_ops = { .owner = THIS_MODULE, .llseek = no_llseek, @@ -238,7 +245,7 @@ static struct attribute * nsc_attrs[] = { &dev_attr_pcrs.attr, &dev_attr_caps.attr, &dev_attr_cancel.attr, - 0, + NULL, }; static struct attribute_group nsc_attr_grp = { .attrs = nsc_attrs }; @@ -247,6 +254,7 @@ static struct tpm_vendor_specific tpm_nsc = { .recv = tpm_nsc_recv, .send = tpm_nsc_send, .cancel = tpm_nsc_cancel, + .status = tpm_nsc_status, .req_complete_mask = NSC_STATUS_OBF, .req_complete_val = NSC_STATUS_OBF, .req_canceled = NSC_STATUS_RDY, @@ -254,130 +262,128 @@ static struct tpm_vendor_specific tpm_nsc = { .miscdev = { .fops = &nsc_ops, }, }; -static int __devinit tpm_nsc_init(struct pci_dev *pci_dev, - const struct pci_device_id *pci_id) +static struct platform_device *pdev = NULL; + +static void __devexit tpm_nsc_remove(struct device *dev) +{ + struct tpm_chip *chip = dev_get_drvdata(dev); + if ( chip ) { + release_region(chip->vendor->base, 2); + tpm_remove_hardware(chip->dev); + } +} + +static struct device_driver nsc_drv = { + .name = "tpm_nsc", + .bus = &platform_bus_type, + .owner = THIS_MODULE, + .suspend = tpm_pm_suspend, + .resume = tpm_pm_resume, +}; + +static int __init init_nsc(void) { int rc = 0; int lo, hi; + int nscAddrBase = TPM_ADDR; - hi = tpm_read_index(TPM_NSC_BASE0_HI); - lo = tpm_read_index(TPM_NSC_BASE0_LO); + /* verify that it is a National part (SID) */ + if (tpm_read_index(TPM_ADDR, NSC_SID_INDEX) != 0xEF) { + nscAddrBase = (tpm_read_index(TPM_SUPERIO_ADDR, 0x2C)<<8)| + (tpm_read_index(TPM_SUPERIO_ADDR, 0x2B)&0xFE); + if (tpm_read_index(nscAddrBase, NSC_SID_INDEX) != 0xF6) + return -ENODEV; + } + + driver_register(&nsc_drv); + + hi = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_HI); + lo = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_LO); tpm_nsc.base = (hi<<8) | lo; - if (pci_enable_device(pci_dev)) - return -EIO; + /* enable the DPM module */ + tpm_write_index(nscAddrBase, NSC_LDC_INDEX, 0x01); - /* verify that it is a National part (SID) */ - if (tpm_read_index(NSC_SID_INDEX) != 0xEF) { - rc = -ENODEV; - goto out_err; + pdev = kzalloc(sizeof(struct platform_device), GFP_KERNEL); + if (!pdev) { + rc = -ENOMEM; + goto err_unreg_drv; + } + + pdev->name = "tpm_nscl0"; + pdev->id = -1; + pdev->num_resources = 0; + pdev->dev.release = tpm_nsc_remove; + pdev->dev.driver = &nsc_drv; + + if ((rc = platform_device_register(pdev)) < 0) + goto err_free_dev; + + if (request_region(tpm_nsc.base, 2, "tpm_nsc0") == NULL ) { + rc = -EBUSY; + goto err_unreg_dev; } - dev_dbg(&pci_dev->dev, "NSC TPM detected\n"); - dev_dbg(&pci_dev->dev, + if ((rc = tpm_register_hardware(&pdev->dev, &tpm_nsc)) < 0) + goto err_rel_reg; + + dev_dbg(&pdev->dev, "NSC TPM detected\n"); + dev_dbg(&pdev->dev, "NSC LDN 0x%x, SID 0x%x, SRID 0x%x\n", - tpm_read_index(0x07), tpm_read_index(0x20), - tpm_read_index(0x27)); - dev_dbg(&pci_dev->dev, + tpm_read_index(nscAddrBase,0x07), tpm_read_index(nscAddrBase,0x20), + tpm_read_index(nscAddrBase,0x27)); + dev_dbg(&pdev->dev, "NSC SIOCF1 0x%x SIOCF5 0x%x SIOCF6 0x%x SIOCF8 0x%x\n", - tpm_read_index(0x21), tpm_read_index(0x25), - tpm_read_index(0x26), tpm_read_index(0x28)); - dev_dbg(&pci_dev->dev, "NSC IO Base0 0x%x\n", - (tpm_read_index(0x60) << 8) | tpm_read_index(0x61)); - dev_dbg(&pci_dev->dev, "NSC IO Base1 0x%x\n", - (tpm_read_index(0x62) << 8) | tpm_read_index(0x63)); - dev_dbg(&pci_dev->dev, "NSC Interrupt number and wakeup 0x%x\n", - tpm_read_index(0x70)); - dev_dbg(&pci_dev->dev, "NSC IRQ type select 0x%x\n", - tpm_read_index(0x71)); - dev_dbg(&pci_dev->dev, + tpm_read_index(nscAddrBase,0x21), tpm_read_index(nscAddrBase,0x25), + tpm_read_index(nscAddrBase,0x26), tpm_read_index(nscAddrBase,0x28)); + dev_dbg(&pdev->dev, "NSC IO Base0 0x%x\n", + (tpm_read_index(nscAddrBase,0x60) << 8) | tpm_read_index(nscAddrBase,0x61)); + dev_dbg(&pdev->dev, "NSC IO Base1 0x%x\n", + (tpm_read_index(nscAddrBase,0x62) << 8) | tpm_read_index(nscAddrBase,0x63)); + dev_dbg(&pdev->dev, "NSC Interrupt number and wakeup 0x%x\n", + tpm_read_index(nscAddrBase,0x70)); + dev_dbg(&pdev->dev, "NSC IRQ type select 0x%x\n", + tpm_read_index(nscAddrBase,0x71)); + dev_dbg(&pdev->dev, "NSC DMA channel select0 0x%x, select1 0x%x\n", - tpm_read_index(0x74), tpm_read_index(0x75)); - dev_dbg(&pci_dev->dev, + tpm_read_index(nscAddrBase,0x74), tpm_read_index(nscAddrBase,0x75)); + dev_dbg(&pdev->dev, "NSC Config " "0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n", - tpm_read_index(0xF0), tpm_read_index(0xF1), - tpm_read_index(0xF2), tpm_read_index(0xF3), - tpm_read_index(0xF4), tpm_read_index(0xF5), - tpm_read_index(0xF6), tpm_read_index(0xF7), - tpm_read_index(0xF8), tpm_read_index(0xF9)); - - dev_info(&pci_dev->dev, - "NSC PC21100 TPM revision %d\n", - tpm_read_index(0x27) & 0x1F); - - if (tpm_read_index(NSC_LDC_INDEX) == 0) - dev_info(&pci_dev->dev, ": NSC TPM not active\n"); - - /* select PM channel 1 */ - tpm_write_index(NSC_LDN_INDEX, 0x12); - tpm_read_index(NSC_LDN_INDEX); - - /* disable the DPM module */ - tpm_write_index(NSC_LDC_INDEX, 0); - tpm_read_index(NSC_LDC_INDEX); - - /* set the data register base addresses */ - tpm_write_index(NSC_DIO_INDEX, TPM_NSC_BASE >> 8); - tpm_write_index(NSC_DIO_INDEX + 1, TPM_NSC_BASE); - tpm_read_index(NSC_DIO_INDEX); - tpm_read_index(NSC_DIO_INDEX + 1); - - /* set the command register base addresses */ - tpm_write_index(NSC_CIO_INDEX, (TPM_NSC_BASE + 1) >> 8); - tpm_write_index(NSC_CIO_INDEX + 1, (TPM_NSC_BASE + 1)); - tpm_read_index(NSC_DIO_INDEX); - tpm_read_index(NSC_DIO_INDEX + 1); - - /* set the interrupt number to be used for the host interface */ - tpm_write_index(NSC_IRQ_INDEX, TPM_NSC_IRQ); - tpm_write_index(NSC_ITS_INDEX, 0x00); - tpm_read_index(NSC_IRQ_INDEX); + tpm_read_index(nscAddrBase,0xF0), tpm_read_index(nscAddrBase,0xF1), + tpm_read_index(nscAddrBase,0xF2), tpm_read_index(nscAddrBase,0xF3), + tpm_read_index(nscAddrBase,0xF4), tpm_read_index(nscAddrBase,0xF5), + tpm_read_index(nscAddrBase,0xF6), tpm_read_index(nscAddrBase,0xF7), + tpm_read_index(nscAddrBase,0xF8), tpm_read_index(nscAddrBase,0xF9)); - /* enable the DPM module */ - tpm_write_index(NSC_LDC_INDEX, 0x01); - tpm_read_index(NSC_LDC_INDEX); - - if ((rc = tpm_register_hardware(pci_dev, &tpm_nsc)) < 0) - goto out_err; + dev_info(&pdev->dev, + "NSC TPM revision %d\n", + tpm_read_index(nscAddrBase, 0x27) & 0x1F); return 0; -out_err: - pci_disable_device(pci_dev); +err_rel_reg: + release_region(tpm_nsc.base, 2); +err_unreg_dev: + platform_device_unregister(pdev); +err_free_dev: + kfree(pdev); +err_unreg_drv: + driver_unregister(&nsc_drv); return rc; } -static struct pci_device_id tpm_pci_tbl[] __devinitdata = { - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0)}, - {PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_LPC)}, - {0,} -}; - -MODULE_DEVICE_TABLE(pci, tpm_pci_tbl); - -static struct pci_driver nsc_pci_driver = { - .name = "tpm_nsc", - .id_table = tpm_pci_tbl, - .probe = tpm_nsc_init, - .remove = __devexit_p(tpm_remove), - .suspend = tpm_pm_suspend, - .resume = tpm_pm_resume, -}; - -static int __init init_nsc(void) -{ - return pci_register_driver(&nsc_pci_driver); -} - static void __exit cleanup_nsc(void) { - pci_unregister_driver(&nsc_pci_driver); + if (pdev) { + tpm_nsc_remove(&pdev->dev); + platform_device_unregister(pdev); + kfree(pdev); + pdev = NULL; + } + + driver_unregister(&nsc_drv); } module_init(init_nsc);