[PATCH v4 03/41] char: impi, tpm: depend on HAS_IOPORT

From: Niklas Schnelle <schnelle@linux.ibm.com>
To: Arnd Bergmann <arnd@arndb.de>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Corey Minyard <minyard@acm.org>, Peter Huewe <peterhuewe@gmx.de>,
	Jarkko Sakkinen <jarkko@kernel.org>,
	Jason Gunthorpe <jgg@ziepe.ca>
Cc: "Bjorn Helgaas" <bhelgaas@google.com>,
	"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
	"Mauro Carvalho Chehab" <mchehab@kernel.org>,
	"Alan Stern" <stern@rowland.harvard.edu>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	"Geert Uytterhoeven" <geert@linux-m68k.org>,
	"Paul Walmsley" <paul.walmsley@sifive.com>,
	"Palmer Dabbelt" <palmer@dabbelt.com>,
	"Albert Ou" <aou@eecs.berkeley.edu>,
	linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
	linux-pci@vger.kernel.org, "Arnd Bergmann" <arnd@kernel.org>,
	"Corey Minyard" <cminyard@mvista.com>,
	openipmi-developer@lists.sourceforge.net,
	linux-integrity@vger.kernel.org
Subject: [PATCH v4 03/41] char: impi, tpm: depend on HAS_IOPORT
Date: Tue, 16 May 2023 12:59:59 +0200	[thread overview]
Message-ID: <20230516110038.2413224-4-schnelle@linux.ibm.com> (raw)
In-Reply-To: <20230516110038.2413224-1-schnelle@linux.ibm.com>

In a future patch HAS_IOPORT=n will result in inb()/outb() and friends
not being declared. We thus need to add this dependency and ifdef
sections of code using inb()/outb() as alternative access methods.

Co-developed-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@kernel.org>
Acked-by: Corey Minyard <cminyard@mvista.com> # IPMI
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
---
Note: The HAS_IOPORT Kconfig option was added in v6.4-rc1 so
      per-subsystem patches may be applied independently

 drivers/char/Kconfig             |  3 ++-
 drivers/char/ipmi/Makefile       | 11 ++++-------
 drivers/char/ipmi/ipmi_si_intf.c |  3 ++-
 drivers/char/ipmi/ipmi_si_pci.c  |  3 +++
 drivers/char/tpm/Kconfig         |  1 +
 drivers/char/tpm/tpm_infineon.c  | 16 ++++++++++++----
 drivers/char/tpm/tpm_tis_core.c  | 19 ++++++++-----------
 7 files changed, 32 insertions(+), 24 deletions(-)

diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 801d6c83f896..625af75833fc 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -34,6 +34,7 @@ config TTY_PRINTK_LEVEL
 config PRINTER
 	tristate "Parallel printer support"
 	depends on PARPORT
+	depends on HAS_IOPORT || PARPORT_NOT_PC
 	help
 	  If you intend to attach a printer to the parallel port of your Linux
 	  box (as opposed to using a serial printer; if the connector at the
@@ -340,7 +341,7 @@ config NVRAM
 
 config DEVPORT
 	bool "/dev/port character device"
-	depends on ISA || PCI
+	depends on HAS_IOPORT
 	default y
 	help
 	  Say Y here if you want to support the /dev/port device. The /dev/port
diff --git a/drivers/char/ipmi/Makefile b/drivers/char/ipmi/Makefile
index cb6138b8ded9..e0944547c9d0 100644
--- a/drivers/char/ipmi/Makefile
+++ b/drivers/char/ipmi/Makefile
@@ -5,13 +5,10 @@
 
 ipmi_si-y := ipmi_si_intf.o ipmi_kcs_sm.o ipmi_smic_sm.o ipmi_bt_sm.o \
 	ipmi_si_hotmod.o ipmi_si_hardcode.o ipmi_si_platform.o \
-	ipmi_si_port_io.o ipmi_si_mem_io.o
-ifdef CONFIG_PCI
-ipmi_si-y += ipmi_si_pci.o
-endif
-ifdef CONFIG_PARISC
-ipmi_si-y += ipmi_si_parisc.o
-endif
+	ipmi_si_mem_io.o
+ipmi_si-$(CONFIG_HAS_IOPORT) += ipmi_si_port_io.o
+ipmi_si-$(CONFIG_PCI) += ipmi_si_pci.o
+ipmi_si-$(CONFIG_PARISC) += ipmi_si_parisc.o
 
 obj-$(CONFIG_IPMI_HANDLER) += ipmi_msghandler.o
 obj-$(CONFIG_IPMI_DEVICE_INTERFACE) += ipmi_devintf.o
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index abddd7e43a9a..edbbdb804913 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -1882,7 +1882,8 @@ int ipmi_si_add_smi(struct si_sm_io *io)
 	}
 
 	if (!io->io_setup) {
-		if (io->addr_space == IPMI_IO_ADDR_SPACE) {
+		if (IS_ENABLED(CONFIG_HAS_IOPORT) &&
+		    io->addr_space == IPMI_IO_ADDR_SPACE) {
 			io->io_setup = ipmi_si_port_setup;
 		} else if (io->addr_space == IPMI_MEM_ADDR_SPACE) {
 			io->io_setup = ipmi_si_mem_setup;
diff --git a/drivers/char/ipmi/ipmi_si_pci.c b/drivers/char/ipmi/ipmi_si_pci.c
index 74fa2055868b..b83d55685b22 100644
--- a/drivers/char/ipmi/ipmi_si_pci.c
+++ b/drivers/char/ipmi/ipmi_si_pci.c
@@ -97,6 +97,9 @@ static int ipmi_pci_probe(struct pci_dev *pdev,
 	}
 
 	if (pci_resource_flags(pdev, 0) & IORESOURCE_IO) {
+		if (!IS_ENABLED(CONFIG_HAS_IOPORT))
+			return -ENXIO;
+
 		io.addr_space = IPMI_IO_ADDR_SPACE;
 		io.io_setup = ipmi_si_port_setup;
 	} else {
diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig
index 927088b2c3d3..418c9ed59ffd 100644
--- a/drivers/char/tpm/Kconfig
+++ b/drivers/char/tpm/Kconfig
@@ -149,6 +149,7 @@ config TCG_NSC
 config TCG_ATMEL
 	tristate "Atmel TPM Interface"
 	depends on PPC64 || HAS_IOPORT_MAP
+	depends on HAS_IOPORT
 	help
 	  If you have a TPM security chip from Atmel say Yes and it 
 	  will be accessible from within Linux.  To compile this driver 
diff --git a/drivers/char/tpm/tpm_infineon.c b/drivers/char/tpm/tpm_infineon.c
index 9c924a1440a9..99c6e565ec8d 100644
--- a/drivers/char/tpm/tpm_infineon.c
+++ b/drivers/char/tpm/tpm_infineon.c
@@ -26,7 +26,9 @@
 #define	TPM_MAX_TRIES		5000
 #define	TPM_INFINEON_DEV_VEN_VALUE	0x15D1
 
+#ifdef CONFIG_HAS_IOPORT
 #define TPM_INF_IO_PORT		0x0
+#endif
 #define TPM_INF_IO_MEM		0x1
 
 #define TPM_INF_ADDR		0x0
@@ -51,34 +53,40 @@ static struct tpm_inf_dev tpm_dev;
 
 static inline void tpm_data_out(unsigned char data, unsigned char offset)
 {
+#ifdef CONFIG_HAS_IOPORT
 	if (tpm_dev.iotype == TPM_INF_IO_PORT)
 		outb(data, tpm_dev.data_regs + offset);
 	else
+#endif
 		writeb(data, tpm_dev.mem_base + tpm_dev.data_regs + offset);
 }
 
 static inline unsigned char tpm_data_in(unsigned char offset)
 {
+#ifdef CONFIG_HAS_IOPORT
 	if (tpm_dev.iotype == TPM_INF_IO_PORT)
 		return inb(tpm_dev.data_regs + offset);
-	else
-		return readb(tpm_dev.mem_base + tpm_dev.data_regs + offset);
+#endif
+	return readb(tpm_dev.mem_base + tpm_dev.data_regs + offset);
 }
 
 static inline void tpm_config_out(unsigned char data, unsigned char offset)
 {
+#ifdef CONFIG_HAS_IOPORT
 	if (tpm_dev.iotype == TPM_INF_IO_PORT)
 		outb(data, tpm_dev.config_port + offset);
 	else
+#endif
 		writeb(data, tpm_dev.mem_base + tpm_dev.index_off + offset);
 }
 
 static inline unsigned char tpm_config_in(unsigned char offset)
 {
+#ifdef CONFIG_HAS_IOPORT
 	if (tpm_dev.iotype == TPM_INF_IO_PORT)
 		return inb(tpm_dev.config_port + offset);
-	else
-		return readb(tpm_dev.mem_base + tpm_dev.index_off + offset);
+#endif
+	return readb(tpm_dev.mem_base + tpm_dev.index_off + offset);
 }
 
 /* TPM header definitions */
diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c
index 02945d53fcef..b5a5c3d44dec 100644
--- a/drivers/char/tpm/tpm_tis_core.c
+++ b/drivers/char/tpm/tpm_tis_core.c
@@ -954,11 +954,6 @@ static void tpm_tis_clkrun_enable(struct tpm_chip *chip, bool value)
 		clkrun_val &= ~LPC_CLKRUN_EN;
 		iowrite32(clkrun_val, data->ilb_base_addr + LPC_CNTRL_OFFSET);
 
-		/*
-		 * Write any random value on port 0x80 which is on LPC, to make
-		 * sure LPC clock is running before sending any TPM command.
-		 */
-		outb(0xCC, 0x80);
 	} else {
 		data->clkrun_enabled--;
 		if (data->clkrun_enabled)
@@ -969,13 +964,15 @@ static void tpm_tis_clkrun_enable(struct tpm_chip *chip, bool value)
 		/* Enable LPC CLKRUN# */
 		clkrun_val |= LPC_CLKRUN_EN;
 		iowrite32(clkrun_val, data->ilb_base_addr + LPC_CNTRL_OFFSET);
-
-		/*
-		 * Write any random value on port 0x80 which is on LPC, to make
-		 * sure LPC clock is running before sending any TPM command.
-		 */
-		outb(0xCC, 0x80);
 	}
+
+#ifdef CONFIG_HAS_IOPORT
+	/*
+	 * Write any random value on port 0x80 which is on LPC, to make
+	 * sure LPC clock is running before sending any TPM command.
+	 */
+	outb(0xCC, 0x80);
+#endif
 }
 
 static const struct tpm_class_ops tpm_tis = {
-- 
2.39.2

