diff options
author | Christophe Ricard <christophe.ricard@gmail.com> | 2016-03-31 20:56:55 (GMT) |
---|---|---|
committer | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2016-06-25 14:26:35 (GMT) |
commit | 4eea703caaac025dd422bd3916b14523977f4332 (patch) | |
tree | 1d4e972e998d3309401181e84bd3f75d9e797ec7 /drivers/char/tpm/tpm_tis.c | |
parent | 003d305d84e911d3f434eabf9e9656e75203f077 (diff) | |
download | linux-4eea703caaac025dd422bd3916b14523977f4332.tar.xz |
tpm: drop 'iobase' from struct tpm_vendor_specific
Dropped the field 'iobase' from struct tpm_vendor_specific and migrated
it to the private structures of tpm_atmel and tpm_tis.
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Diffstat (limited to 'drivers/char/tpm/tpm_tis.c')
-rw-r--r-- | drivers/char/tpm/tpm_tis.c | 100 |
1 files changed, 58 insertions, 42 deletions
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c index bf9d331..41c4b60 100644 --- a/drivers/char/tpm/tpm_tis.c +++ b/drivers/char/tpm/tpm_tis.c @@ -94,6 +94,7 @@ struct tpm_info { #define TPM_RID(l) (0x0F04 | ((l) << 12)) struct priv_data { + void __iomem *iobase; u16 manufacturer_id; bool irq_tested; wait_queue_head_t int_queue; @@ -128,9 +129,10 @@ static inline int is_itpm(struct acpi_device *dev) * correct values in the other bits.' */ static int wait_startup(struct tpm_chip *chip, int l) { + struct priv_data *priv = chip->vendor.priv; unsigned long stop = jiffies + chip->vendor.timeout_a; do { - if (ioread8(chip->vendor.iobase + TPM_ACCESS(l)) & + if (ioread8(priv->iobase + TPM_ACCESS(l)) & TPM_ACCESS_VALID) return 0; msleep(TPM_TIMEOUT); @@ -140,7 +142,9 @@ static int wait_startup(struct tpm_chip *chip, int l) static int check_locality(struct tpm_chip *chip, int l) { - if ((ioread8(chip->vendor.iobase + TPM_ACCESS(l)) & + struct priv_data *priv = chip->vendor.priv; + + if ((ioread8(priv->iobase + TPM_ACCESS(l)) & (TPM_ACCESS_ACTIVE_LOCALITY | TPM_ACCESS_VALID)) == (TPM_ACCESS_ACTIVE_LOCALITY | TPM_ACCESS_VALID)) return chip->vendor.locality = l; @@ -150,11 +154,13 @@ static int check_locality(struct tpm_chip *chip, int l) static void release_locality(struct tpm_chip *chip, int l, int force) { - if (force || (ioread8(chip->vendor.iobase + TPM_ACCESS(l)) & + struct priv_data *priv = chip->vendor.priv; + + if (force || (ioread8(priv->iobase + TPM_ACCESS(l)) & (TPM_ACCESS_REQUEST_PENDING | TPM_ACCESS_VALID)) == (TPM_ACCESS_REQUEST_PENDING | TPM_ACCESS_VALID)) iowrite8(TPM_ACCESS_ACTIVE_LOCALITY, - chip->vendor.iobase + TPM_ACCESS(l)); + priv->iobase + TPM_ACCESS(l)); } static int request_locality(struct tpm_chip *chip, int l) @@ -167,7 +173,7 @@ static int request_locality(struct tpm_chip *chip, int l) return l; iowrite8(TPM_ACCESS_REQUEST_USE, - chip->vendor.iobase + TPM_ACCESS(l)); + priv->iobase + TPM_ACCESS(l)); stop = jiffies + chip->vendor.timeout_a; @@ -200,19 +206,24 @@ again: static u8 tpm_tis_status(struct tpm_chip *chip) { - return ioread8(chip->vendor.iobase + + struct priv_data *priv = chip->vendor.priv; + + return ioread8(priv->iobase + TPM_STS(chip->vendor.locality)); } static void tpm_tis_ready(struct tpm_chip *chip) { + struct priv_data *priv = chip->vendor.priv; + /* this causes the current command to be aborted */ iowrite8(TPM_STS_COMMAND_READY, - chip->vendor.iobase + TPM_STS(chip->vendor.locality)); + priv->iobase + TPM_STS(chip->vendor.locality)); } static int get_burstcount(struct tpm_chip *chip) { + struct priv_data *priv = chip->vendor.priv; unsigned long stop; int burstcnt; @@ -220,9 +231,9 @@ static int get_burstcount(struct tpm_chip *chip) /* which timeout value, spec has 2 answers (c & d) */ stop = jiffies + chip->vendor.timeout_d; do { - burstcnt = ioread8(chip->vendor.iobase + + burstcnt = ioread8(priv->iobase + TPM_STS(chip->vendor.locality) + 1); - burstcnt += ioread8(chip->vendor.iobase + + burstcnt += ioread8(priv->iobase + TPM_STS(chip->vendor.locality) + 2) << 8; if (burstcnt) @@ -234,6 +245,7 @@ static int get_burstcount(struct tpm_chip *chip) static int recv_data(struct tpm_chip *chip, u8 *buf, size_t count) { + struct priv_data *priv = chip->vendor.priv; int size = 0, burstcnt; while (size < count && wait_for_tpm_stat(chip, @@ -243,7 +255,7 @@ static int recv_data(struct tpm_chip *chip, u8 *buf, size_t count) == 0) { burstcnt = get_burstcount(chip); for (; burstcnt > 0 && size < count; burstcnt--) - buf[size++] = ioread8(chip->vendor.iobase + + buf[size++] = ioread8(priv->iobase + TPM_DATA_FIFO(chip->vendor. locality)); } @@ -329,7 +341,7 @@ static int tpm_tis_send_data(struct tpm_chip *chip, u8 *buf, size_t len) while (count < len - 1) { burstcnt = get_burstcount(chip); for (; burstcnt > 0 && count < len - 1; burstcnt--) { - iowrite8(buf[count], chip->vendor.iobase + + iowrite8(buf[count], priv->iobase + TPM_DATA_FIFO(chip->vendor.locality)); count++; } @@ -345,7 +357,7 @@ static int tpm_tis_send_data(struct tpm_chip *chip, u8 *buf, size_t len) /* write last byte */ iowrite8(buf[count], - chip->vendor.iobase + TPM_DATA_FIFO(chip->vendor.locality)); + priv->iobase + TPM_DATA_FIFO(chip->vendor.locality)); wait_for_tpm_stat(chip, TPM_STS_VALID, chip->vendor.timeout_c, &priv->int_queue, false); status = tpm_tis_status(chip); @@ -364,15 +376,15 @@ out_err: static void disable_interrupts(struct tpm_chip *chip) { + struct priv_data *priv = chip->vendor.priv; u32 intmask; intmask = - ioread32(chip->vendor.iobase + + ioread32(priv->iobase + TPM_INT_ENABLE(chip->vendor.locality)); intmask &= ~TPM_GLOBAL_INT_ENABLE; iowrite32(intmask, - chip->vendor.iobase + - TPM_INT_ENABLE(chip->vendor.locality)); + priv->iobase + TPM_INT_ENABLE(chip->vendor.locality)); devm_free_irq(&chip->dev, chip->vendor.irq, chip); chip->vendor.irq = 0; } @@ -384,6 +396,7 @@ static void disable_interrupts(struct tpm_chip *chip) */ static int tpm_tis_send_main(struct tpm_chip *chip, u8 *buf, size_t len) { + struct priv_data *priv = chip->vendor.priv; int rc; u32 ordinal; unsigned long dur; @@ -394,7 +407,7 @@ static int tpm_tis_send_main(struct tpm_chip *chip, u8 *buf, size_t len) /* go and do it */ iowrite8(TPM_STS_GO, - chip->vendor.iobase + TPM_STS(chip->vendor.locality)); + priv->iobase + TPM_STS(chip->vendor.locality)); if (chip->vendor.irq) { ordinal = be32_to_cpu(*((__be32 *) (buf + 6))); @@ -453,10 +466,11 @@ static const struct tis_vendor_timeout_override vendor_timeout_overrides[] = { static bool tpm_tis_update_timeouts(struct tpm_chip *chip, unsigned long *timeout_cap) { + struct priv_data *priv = chip->vendor.priv; int i; u32 did_vid; - did_vid = ioread32(chip->vendor.iobase + TPM_DID_VID(0)); + did_vid = ioread32(priv->iobase + TPM_DID_VID(0)); for (i = 0; i != ARRAY_SIZE(vendor_timeout_overrides); i++) { if (vendor_timeout_overrides[i].did_vid != did_vid) @@ -476,6 +490,7 @@ static bool tpm_tis_update_timeouts(struct tpm_chip *chip, */ static int probe_itpm(struct tpm_chip *chip) { + struct priv_data *priv = chip->vendor.priv; int rc = 0; u8 cmd_getticks[] = { 0x00, 0xc1, 0x00, 0x00, 0x00, 0x0a, @@ -483,7 +498,7 @@ static int probe_itpm(struct tpm_chip *chip) }; size_t len = sizeof(cmd_getticks); bool rem_itpm = itpm; - u16 vendor = ioread16(chip->vendor.iobase + TPM_DID_VID(0)); + u16 vendor = ioread16(priv->iobase + TPM_DID_VID(0)); /* probe only iTPMS */ if (vendor != TPM_VID_INTEL) @@ -548,7 +563,7 @@ static irqreturn_t tis_int_handler(int dummy, void *dev_id) u32 interrupt; int i; - interrupt = ioread32(chip->vendor.iobase + + interrupt = ioread32(priv->iobase + TPM_INT_STATUS(chip->vendor.locality)); if (interrupt == 0) @@ -568,9 +583,9 @@ static irqreturn_t tis_int_handler(int dummy, void *dev_id) /* Clear interrupts handled with TPM_EOI */ iowrite32(interrupt, - chip->vendor.iobase + + priv->iobase + TPM_INT_STATUS(chip->vendor.locality)); - ioread32(chip->vendor.iobase + TPM_INT_STATUS(chip->vendor.locality)); + ioread32(priv->iobase + TPM_INT_STATUS(chip->vendor.locality)); return IRQ_HANDLED; } @@ -592,19 +607,19 @@ static int tpm_tis_probe_irq_single(struct tpm_chip *chip, u32 intmask, } chip->vendor.irq = irq; - original_int_vec = ioread8(chip->vendor.iobase + + original_int_vec = ioread8(priv->iobase + TPM_INT_VECTOR(chip->vendor.locality)); iowrite8(irq, - chip->vendor.iobase + TPM_INT_VECTOR(chip->vendor.locality)); + priv->iobase + TPM_INT_VECTOR(chip->vendor.locality)); /* Clear all existing */ - iowrite32(ioread32(chip->vendor.iobase + + iowrite32(ioread32(priv->iobase + TPM_INT_STATUS(chip->vendor.locality)), - chip->vendor.iobase + TPM_INT_STATUS(chip->vendor.locality)); + priv->iobase + TPM_INT_STATUS(chip->vendor.locality)); /* Turn on */ iowrite32(intmask | TPM_GLOBAL_INT_ENABLE, - chip->vendor.iobase + TPM_INT_ENABLE(chip->vendor.locality)); + priv->iobase + TPM_INT_ENABLE(chip->vendor.locality)); priv->irq_tested = false; @@ -621,8 +636,7 @@ static int tpm_tis_probe_irq_single(struct tpm_chip *chip, u32 intmask, */ if (!chip->vendor.irq) { iowrite8(original_int_vec, - chip->vendor.iobase + - TPM_INT_VECTOR(chip->vendor.locality)); + priv->iobase + TPM_INT_VECTOR(chip->vendor.locality)); return 1; } @@ -635,10 +649,11 @@ static int tpm_tis_probe_irq_single(struct tpm_chip *chip, u32 intmask, */ static void tpm_tis_probe_irq(struct tpm_chip *chip, u32 intmask) { + struct priv_data *priv = chip->vendor.priv; u8 original_int_vec; int i; - original_int_vec = ioread8(chip->vendor.iobase + + original_int_vec = ioread8(priv->iobase + TPM_INT_VECTOR(chip->vendor.locality)); if (!original_int_vec) { @@ -658,7 +673,8 @@ MODULE_PARM_DESC(interrupts, "Enable interrupts"); static void tpm_tis_remove(struct tpm_chip *chip) { - void __iomem *reg = chip->vendor.iobase + + struct priv_data *priv = chip->vendor.priv; + void __iomem *reg = priv->iobase + TPM_INT_ENABLE(chip->vendor.locality); iowrite32(~TPM_GLOBAL_INT_ENABLE & ioread32(reg), reg); @@ -686,9 +702,9 @@ static int tpm_tis_init(struct device *dev, struct tpm_info *tpm_info, chip->acpi_dev_handle = acpi_dev_handle; #endif - chip->vendor.iobase = devm_ioremap_resource(dev, &tpm_info->res); - if (IS_ERR(chip->vendor.iobase)) - return PTR_ERR(chip->vendor.iobase); + priv->iobase = devm_ioremap_resource(dev, &tpm_info->res); + if (IS_ERR(priv->iobase)) + return PTR_ERR(priv->iobase); /* Maximum timeouts */ chip->vendor.timeout_a = TIS_TIMEOUT_A_MAX; @@ -702,13 +718,13 @@ static int tpm_tis_init(struct device *dev, struct tpm_info *tpm_info, } /* Take control of the TPM's interrupt hardware and shut it off */ - intmask = ioread32(chip->vendor.iobase + + intmask = ioread32(priv->iobase + TPM_INT_ENABLE(chip->vendor.locality)); intmask |= TPM_INTF_CMD_READY_INT | TPM_INTF_LOCALITY_CHANGE_INT | TPM_INTF_DATA_AVAIL_INT | TPM_INTF_STS_VALID_INT; intmask &= ~TPM_GLOBAL_INT_ENABLE; iowrite32(intmask, - chip->vendor.iobase + TPM_INT_ENABLE(chip->vendor.locality)); + priv->iobase + TPM_INT_ENABLE(chip->vendor.locality)); if (request_locality(chip, 0) != 0) { rc = -ENODEV; @@ -719,12 +735,12 @@ static int tpm_tis_init(struct device *dev, struct tpm_info *tpm_info, if (rc) goto out_err; - vendor = ioread32(chip->vendor.iobase + TPM_DID_VID(0)); + vendor = ioread32(priv->iobase + TPM_DID_VID(0)); priv->manufacturer_id = vendor; dev_info(dev, "%s TPM (device-id 0x%X, rev-id %d)\n", (chip->flags & TPM_CHIP_FLAG_TPM2) ? "2.0" : "1.2", - vendor >> 16, ioread8(chip->vendor.iobase + TPM_RID(0))); + vendor >> 16, ioread8(priv->iobase + TPM_RID(0))); if (!itpm) { probe = probe_itpm(chip); @@ -741,7 +757,7 @@ static int tpm_tis_init(struct device *dev, struct tpm_info *tpm_info, /* Figure out the capabilities */ intfcaps = - ioread32(chip->vendor.iobase + + ioread32(priv->iobase + TPM_INTF_CAPS(chip->vendor.locality)); dev_dbg(dev, "TPM interface capabilities (0x%x):\n", intfcaps); @@ -820,23 +836,23 @@ out_err: #ifdef CONFIG_PM_SLEEP static void tpm_tis_reenable_interrupts(struct tpm_chip *chip) { + struct priv_data *priv = chip->vendor.priv; u32 intmask; /* reenable interrupts that device may have lost or BIOS/firmware may have disabled */ - iowrite8(chip->vendor.irq, chip->vendor.iobase + + iowrite8(chip->vendor.irq, priv->iobase + TPM_INT_VECTOR(chip->vendor.locality)); intmask = - ioread32(chip->vendor.iobase + - TPM_INT_ENABLE(chip->vendor.locality)); + ioread32(priv->iobase + TPM_INT_ENABLE(chip->vendor.locality)); intmask |= TPM_INTF_CMD_READY_INT | TPM_INTF_LOCALITY_CHANGE_INT | TPM_INTF_DATA_AVAIL_INT | TPM_INTF_STS_VALID_INT | TPM_GLOBAL_INT_ENABLE; iowrite32(intmask, - chip->vendor.iobase + TPM_INT_ENABLE(chip->vendor.locality)); + priv->iobase + TPM_INT_ENABLE(chip->vendor.locality)); } static int tpm_tis_resume(struct device *dev) |