From: Niklas Schnelle <schnelle@linux.ibm.com>
To: Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jirislaby@kernel.org>
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>,
linux-serial@vger.kernel.org
Subject: [PATCH v4 33/41] tty: serial: handle HAS_IOPORT dependencies
Date: Tue, 16 May 2023 13:00:29 +0200 [thread overview]
Message-ID: <20230516110038.2413224-34-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 HAS_IOPORT as dependency for
those drivers using them unconditionally. For 8250 based drivers some
support MMIO only use so fence only the parts requiring I/O ports.
Co-developed-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@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/tty/Kconfig | 4 +--
drivers/tty/serial/8250/8250_early.c | 4 +++
drivers/tty/serial/8250/8250_pci.c | 14 +++++++++
drivers/tty/serial/8250/8250_port.c | 44 +++++++++++++++++++++++-----
drivers/tty/serial/8250/Kconfig | 5 ++--
drivers/tty/serial/Kconfig | 2 +-
6 files changed, 60 insertions(+), 13 deletions(-)
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index 341abaed4ce2..bdd267dbd5e4 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -222,7 +222,7 @@ config MOXA_INTELLIO
config MOXA_SMARTIO
tristate "Moxa SmartIO support v. 2.0"
- depends on SERIAL_NONSTANDARD && PCI
+ depends on SERIAL_NONSTANDARD && PCI && HAS_IOPORT
help
Say Y here if you have a Moxa SmartIO multiport serial card and/or
want to help develop a new version of this driver.
@@ -303,7 +303,7 @@ config GOLDFISH_TTY_EARLY_CONSOLE
config IPWIRELESS
tristate "IPWireless 3G UMTS PCMCIA card support"
- depends on PCMCIA && NETDEVICES
+ depends on PCMCIA && NETDEVICES && HAS_IOPORT
select PPP
help
This is a driver for 3G UMTS PCMCIA card from IPWireless company. In
diff --git a/drivers/tty/serial/8250/8250_early.c b/drivers/tty/serial/8250/8250_early.c
index 0ebde0ab8167..4192b1ae2736 100644
--- a/drivers/tty/serial/8250/8250_early.c
+++ b/drivers/tty/serial/8250/8250_early.c
@@ -48,8 +48,10 @@ static unsigned int serial8250_early_in(struct uart_port *port, int offset)
return readl(port->membase + offset);
case UPIO_MEM32BE:
return ioread32be(port->membase + offset);
+#ifdef CONFIG_HAS_IOPORT
case UPIO_PORT:
return inb(port->iobase + offset);
+#endif
case UPIO_AU:
return port->serial_in(port, reg_offset);
default:
@@ -75,9 +77,11 @@ static void serial8250_early_out(struct uart_port *port, int offset, int value)
case UPIO_MEM32BE:
iowrite32be(value, port->membase + offset);
break;
+#ifdef CONFIG_HAS_IOPORT
case UPIO_PORT:
outb(value, port->iobase + offset);
break;
+#endif
case UPIO_AU:
port->serial_out(port, reg_offset, value);
break;
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index c55be6fda0ca..70bd84a05da7 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -847,6 +847,7 @@ static int pci_netmos_init(struct pci_dev *dev)
return num_serial;
}
+#ifdef CONFIG_HAS_IOPORT
/*
* These chips are available with optionally one parallel port and up to
* two serial ports. Unfortunately they all have the same product id.
@@ -973,6 +974,7 @@ static void pci_ite887x_exit(struct pci_dev *dev)
ioport &= 0xffff;
release_region(ioport, ITE_887x_IOSIZE);
}
+#endif /* CONFIG_HAS_IOPORT */
/*
* Oxford Semiconductor Inc.
@@ -1255,6 +1257,7 @@ static int pci_asix_setup(struct serial_private *priv,
#define QOPR_CLOCK_X8 0x0003
#define QOPR_CLOCK_RATE_MASK 0x0003
+#ifdef CONFIG_HAS_IOPORT
/* Quatech devices have their own extra interface features */
static struct pci_device_id quatech_cards[] = {
{ PCI_DEVICE_DATA(QUATECH, QSC100, 1) },
@@ -1474,6 +1477,7 @@ static int pci_quatech_setup(struct serial_private *priv,
pci_warn(priv->dev, "software control of RS422 features not currently supported.\n");
return pci_default_setup(priv, board, port, idx);
}
+#endif /* CONFIG_HAS_IOPORT */
static int pci_default_setup(struct serial_private *priv,
const struct pciserial_board *board,
@@ -1753,6 +1757,7 @@ static int skip_tx_en_setup(struct serial_private *priv,
return pci_default_setup(priv, board, port, idx);
}
+#ifdef CONFIG_HAS_IOPORT
static void kt_handle_break(struct uart_port *p)
{
struct uart_8250_port *up = up_to_u8250p(p);
@@ -1796,6 +1801,7 @@ static int kt_serial_setup(struct serial_private *priv,
port->port.handle_break = kt_handle_break;
return skip_tx_en_setup(priv, board, port, idx);
}
+#endif /* CONFIG_HAS_IOPORT */
static int pci_eg20t_init(struct pci_dev *dev)
{
@@ -1840,6 +1846,7 @@ pci_wch_ch38x_setup(struct serial_private *priv,
#define CH384_XINT_ENABLE_REG 0xEB
#define CH384_XINT_ENABLE_BIT 0x02
+#ifdef CONFIG_HAS_IOPORT
static int pci_wch_ch38x_init(struct pci_dev *dev)
{
int max_port;
@@ -1867,6 +1874,7 @@ static void pci_wch_ch38x_exit(struct pci_dev *dev)
iobase = pci_resource_start(dev, 0);
outb(0x0, iobase + CH384_XINT_ENABLE_REG);
}
+#endif /* CONFIG_HAS_IOPORT */
static int
@@ -2070,6 +2078,7 @@ static struct pci_serial_quirk pci_serial_quirks[] = {
.subdevice = PCI_ANY_ID,
.setup = ce4100_serial_setup,
},
+#ifdef CONFIG_HAS_IOPORT
{
.vendor = PCI_VENDOR_ID_INTEL,
.device = PCI_DEVICE_ID_INTEL_PATSBURG_KT,
@@ -2089,6 +2098,7 @@ static struct pci_serial_quirk pci_serial_quirks[] = {
.setup = pci_default_setup,
.exit = pci_ite887x_exit,
},
+#endif
/*
* National Instruments
*/
@@ -2210,6 +2220,7 @@ static struct pci_serial_quirk pci_serial_quirks[] = {
.exit = pci_ni8430_exit,
},
/* Quatech */
+#ifdef CONFIG_HAS_IOPORT
{
.vendor = PCI_VENDOR_ID_QUATECH,
.device = PCI_ANY_ID,
@@ -2218,6 +2229,7 @@ static struct pci_serial_quirk pci_serial_quirks[] = {
.init = pci_quatech_init,
.setup = pci_quatech_setup,
},
+#endif
/*
* Panacom
*/
@@ -2588,6 +2600,7 @@ static struct pci_serial_quirk pci_serial_quirks[] = {
.subdevice = PCI_ANY_ID,
.setup = pci_wch_ch38x_setup,
},
+#ifdef CONFIG_HAS_IOPORT
/* WCH CH384 8S card (16850 clone) */
{
.vendor = PCIE_VENDOR_ID_WCH,
@@ -2598,6 +2611,7 @@ static struct pci_serial_quirk pci_serial_quirks[] = {
.exit = pci_wch_ch38x_exit,
.setup = pci_wch_ch38x_setup,
},
+#endif
/*
* ASIX devices with FIFO bug
*/
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index fe8d79c4ae95..8d8606dc763b 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -401,6 +401,7 @@ static void au_serial_dl_write(struct uart_8250_port *up, int value)
#endif
+#ifdef CONFIG_HAS_IOPORT
static unsigned int hub6_serial_in(struct uart_port *p, int offset)
{
offset = offset << p->regshift;
@@ -414,6 +415,7 @@ static void hub6_serial_out(struct uart_port *p, int offset, int value)
outb(p->hub6 - 1 + offset, p->iobase);
outb(value, p->iobase + 1);
}
+#endif /* CONFIG_HAS_IOPORT */
static unsigned int mem_serial_in(struct uart_port *p, int offset)
{
@@ -463,6 +465,7 @@ static unsigned int mem32be_serial_in(struct uart_port *p, int offset)
return ioread32be(p->membase + offset);
}
+#ifdef CONFIG_HAS_IOPORT
static unsigned int io_serial_in(struct uart_port *p, int offset)
{
offset = offset << p->regshift;
@@ -474,6 +477,24 @@ static void io_serial_out(struct uart_port *p, int offset, int value)
offset = offset << p->regshift;
outb(value, p->iobase + offset);
}
+#endif
+static unsigned int no_serial_in(struct uart_port *p, int offset)
+{
+ return (unsigned int)-1;
+}
+
+static void no_serial_out(struct uart_port *p, int offset, int value)
+{
+}
+
+#ifdef CONFIG_HAS_IOPORT
+static inline bool is_upf_fourport(struct uart_port *port)
+{
+ return port->flags & UPF_FOURPORT;
+}
+#else
+#define is_upf_fourport(x) false
+#endif
static int serial8250_default_handle_irq(struct uart_port *port);
@@ -485,10 +506,12 @@ static void set_io_from_upio(struct uart_port *p)
up->dl_write = default_serial_dl_write;
switch (p->iotype) {
+#ifdef CONFIG_HAS_IOPORT
case UPIO_HUB6:
p->serial_in = hub6_serial_in;
p->serial_out = hub6_serial_out;
break;
+#endif
case UPIO_MEM:
p->serial_in = mem_serial_in;
@@ -519,10 +542,17 @@ static void set_io_from_upio(struct uart_port *p)
break;
#endif
- default:
+#ifdef CONFIG_HAS_IOPORT
+ case UPIO_PORT:
p->serial_in = io_serial_in;
p->serial_out = io_serial_out;
break;
+#endif
+
+ default:
+ WARN(1, "Unsupported UART type %x\n", p->iotype);
+ p->serial_in = no_serial_in;
+ p->serial_out = no_serial_out;
}
/* Remember loaded iotype */
up->cur_iotype = p->iotype;
@@ -1379,7 +1409,7 @@ static void autoconfig_irq(struct uart_8250_port *up)
unsigned long irqs;
int irq;
- if (port->flags & UPF_FOURPORT) {
+ if (is_upf_fourport(port)) {
ICP = (port->iobase & 0xfe0) | 0x1f;
save_ICP = inb_p(ICP);
outb_p(0x80, ICP);
@@ -1398,7 +1428,7 @@ static void autoconfig_irq(struct uart_8250_port *up)
irqs = probe_irq_on();
serial8250_out_MCR(up, 0);
udelay(10);
- if (port->flags & UPF_FOURPORT) {
+ if (is_upf_fourport(port)) {
serial8250_out_MCR(up, UART_MCR_DTR | UART_MCR_RTS);
} else {
serial8250_out_MCR(up,
@@ -1416,7 +1446,7 @@ static void autoconfig_irq(struct uart_8250_port *up)
serial8250_out_MCR(up, save_mcr);
serial_out(up, UART_IER, save_ier);
- if (port->flags & UPF_FOURPORT)
+ if (is_upf_fourport(port))
outb_p(save_ICP, ICP);
if (uart_console(port))
@@ -2381,7 +2411,7 @@ int serial8250_do_startup(struct uart_port *port)
serial_port_out(port, UART_LCR, UART_LCR_WLEN8);
spin_lock_irqsave(&port->lock, flags);
- if (up->port.flags & UPF_FOURPORT) {
+ if (is_upf_fourport(&up->port)) {
if (!up->port.irq)
up->port.mctrl |= TIOCM_OUT1;
} else
@@ -2463,7 +2493,7 @@ int serial8250_do_startup(struct uart_port *port)
*/
up->ier = UART_IER_RLSI | UART_IER_RDI;
- if (port->flags & UPF_FOURPORT) {
+ if (is_upf_fourport(port)) {
unsigned int icp;
/*
* Enable interrupts on the AST Fourport board
@@ -2506,7 +2536,7 @@ void serial8250_do_shutdown(struct uart_port *port)
serial8250_release_dma(up);
spin_lock_irqsave(&port->lock, flags);
- if (port->flags & UPF_FOURPORT) {
+ if (is_upf_fourport(port)) {
/* reset interrupts on the AST Fourport board */
inb((port->iobase & 0xfe0) | 0x1f);
port->mctrl |= TIOCM_OUT1;
diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig
index 5313aa31930f..2a43bea7d7c3 100644
--- a/drivers/tty/serial/8250/Kconfig
+++ b/drivers/tty/serial/8250/Kconfig
@@ -6,7 +6,6 @@
config SERIAL_8250
tristate "8250/16550 and compatible serial support"
- depends on !S390
select SERIAL_CORE
select SERIAL_MCTRL_GPIO if GPIOLIB
help
@@ -72,7 +71,7 @@ config SERIAL_8250_16550A_VARIANTS
config SERIAL_8250_FINTEK
bool "Support for Fintek F81216A LPC to 4 UART RS485 API"
- depends on SERIAL_8250
+ depends on SERIAL_8250 && HAS_IOPORT
help
Selecting this option will add support for the RS485 capabilities
of the Fintek F81216A LPC to 4 UART.
@@ -160,7 +159,7 @@ config SERIAL_8250_HP300
config SERIAL_8250_CS
tristate "8250/16550 PCMCIA device support"
- depends on PCMCIA && SERIAL_8250
+ depends on PCMCIA && SERIAL_8250 && HAS_IOPORT
help
Say Y here to enable support for 16-bit PCMCIA serial devices,
including serial port cards, modems, and the modem functions of
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 398e5aac2e77..dc41b3be6800 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -871,7 +871,7 @@ config SERIAL_TXX9_STDSERIAL
config SERIAL_JSM
tristate "Digi International NEO and Classic PCI Support"
- depends on PCI
+ depends on PCI && HAS_IOPORT
select SERIAL_CORE
help
This is a driver for Digi International's Neo and Classic series
--
2.39.2
next prev parent reply other threads:[~2023-05-16 11:11 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-16 10:59 [PATCH v4 00/41] treewide: Remove I/O port accessors for HAS_IOPORT=n Niklas Schnelle
2023-05-16 10:59 ` [PATCH v4 01/41] kgdb: add HAS_IOPORT dependency Niklas Schnelle
2023-05-16 10:59 ` [PATCH v4 02/41] ata: add HAS_IOPORT dependencies Niklas Schnelle
2023-05-16 13:18 ` Damien Le Moal
2023-05-16 13:23 ` Damien Le Moal
2023-05-19 12:46 ` Niklas Schnelle
2023-05-30 20:51 ` Sergey Shtylyov
2023-05-16 10:59 ` [PATCH v4 03/41] char: impi, tpm: depend on HAS_IOPORT Niklas Schnelle
2023-05-16 11:06 ` Paul Menzel
2023-05-16 11:39 ` Niklas Schnelle
2023-05-16 11:46 ` Greg Kroah-Hartman
2023-05-16 12:35 ` Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 04/41] comedi: add HAS_IOPORT dependencies Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 05/41] counter: " Niklas Schnelle
2023-05-19 1:26 ` William Breathitt Gray
2023-05-19 13:17 ` Niklas Schnelle
2023-05-19 13:38 ` Niklas Schnelle
2023-05-19 13:39 ` Niklas Schnelle
2023-05-19 14:21 ` William Breathitt Gray
2023-05-22 10:42 ` Niklas Schnelle
2023-05-22 11:15 ` William Breathitt Gray
2023-05-16 11:00 ` [PATCH v4 06/41] /dev/port: don't compile file operations without CONFIG_DEVPORT Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 07/41] drm: handle HAS_IOPORT dependencies Niklas Schnelle
2023-05-16 17:13 ` Thomas Zimmermann
2023-05-16 17:47 ` Arnd Bergmann
2023-05-16 11:00 ` [PATCH v4 08/41] firmware: dmi-sysfs: handle HAS_IOPORT=n Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 09/41] gpio: add HAS_IOPORT dependencies Niklas Schnelle
2023-05-16 12:57 ` Linus Walleij
2023-05-17 14:15 ` Bartosz Golaszewski
2023-05-16 11:00 ` [PATCH v4 10/41] hwmon: " Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 11/41] i2c: " Niklas Schnelle
2023-06-05 10:12 ` Wolfram Sang
2023-06-05 12:01 ` Niklas Schnelle
2023-06-05 20:05 ` Wolfram Sang
2023-06-05 12:01 ` Uwe Kleine-König
2023-06-05 12:55 ` Wolfram Sang
2023-05-16 11:00 ` [PATCH v4 12/41] iio: ad7606: Kconfig: " Niklas Schnelle
2023-05-20 15:40 ` Jonathan Cameron
2023-05-16 11:00 ` [PATCH v4 13/41] Input: " Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 14/41] Input: gameport: add ISA and " Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 15/41] leds: add " Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 16/41] media: " Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 17/41] misc: " Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 18/41] mISDN: " Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 19/41] mpt fusion: " Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 20/41] net: handle " Niklas Schnelle
2023-05-16 15:48 ` Maciej W. Rozycki
2023-05-16 11:00 ` [PATCH v4 21/41] parport: PC style parport depends on HAS_IOPORT Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 22/41] PCI: Make quirk using inw() depend " Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 23/41] PCI/sysfs: Make I/O resource " Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 24/41] pcmcia: add HAS_IOPORT dependencies Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 25/41] platform: " Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 26/41] pnp: " Niklas Schnelle
2023-05-16 11:55 ` Rafael J. Wysocki
2023-05-16 11:00 ` [PATCH v4 27/41] power: " Niklas Schnelle
2023-05-16 20:03 ` Sebastian Reichel
2023-05-16 11:00 ` [PATCH v4 28/41] rtc: " Niklas Schnelle
2023-05-16 15:49 ` Maciej W. Rozycki
2023-05-17 8:15 ` Niklas Schnelle
2023-05-17 9:53 ` Maciej W. Rozycki
2023-05-16 11:00 ` [PATCH v4 29/41] scsi: " Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 30/41] sound: " Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 31/41] speakup: add HAS_IOPORT dependency for SPEAKUP_SERIALIO Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 32/41] staging: add HAS_IOPORT dependencies Niklas Schnelle
2023-05-16 11:00 ` Niklas Schnelle [this message]
2023-05-30 10:48 ` [PATCH v4 33/41] tty: serial: handle " Greg Kroah-Hartman
2023-05-30 11:53 ` Arnd Bergmann
2023-05-30 14:31 ` Greg Kroah-Hartman
2023-05-16 11:00 ` [PATCH v4 34/41] usb: add " Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 35/41] usb: uhci: handle " Niklas Schnelle
2023-05-16 16:29 ` Greg Kroah-Hartman
2023-05-16 16:44 ` Arnd Bergmann
2023-05-16 19:51 ` Alan Stern
2023-05-17 8:29 ` Niklas Schnelle
2023-05-16 20:17 ` Alan Stern
2023-05-17 12:17 ` Arnd Bergmann
2023-05-19 11:31 ` Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 36/41] usb: pci-quirks: " Niklas Schnelle
2023-05-30 11:00 ` Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 37/41] fbdev: atyfb: Remove unused clock determination Niklas Schnelle
2023-05-16 12:24 ` Ville Syrjälä
2023-05-19 14:49 ` Helge Deller
2023-05-16 11:00 ` [PATCH v4 38/41] video: handle HAS_IOPORT dependencies Niklas Schnelle
2023-05-16 17:21 ` Thomas Zimmermann
2023-05-17 12:41 ` Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 39/41] watchdog: add " Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 40/41] wireless: " Niklas Schnelle
2023-05-16 11:00 ` [PATCH v4 41/41] asm-generic/io.h: Remove I/O port accessors for HAS_IOPORT=n Niklas Schnelle
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