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Wysocki" , Geert Uytterhoeven , Paul Walmsley , Palmer Dabbelt , Albert Ou , linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-pci@vger.kernel.org, Arnd Bergmann , linux-serial@vger.kernel.org Subject: [PATCH v3 33/38] tty: serial: handle HAS_IOPORT dependencies Date: Tue, 14 Mar 2023 13:12:11 +0100 Message-Id: <20230314121216.413434-34-schnelle@linux.ibm.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20230314121216.413434-1-schnelle@linux.ibm.com> References: <20230314121216.413434-1-schnelle@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: csLOyPkqwrNRYHaIZj909ru4kB_zrX4c X-Proofpoint-ORIG-GUID: OTJLbmdmZImn1Pv3sv6xyjU43G46ezTO X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-03-14_04,2023-03-14_02,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 spamscore=0 bulkscore=0 suspectscore=0 mlxscore=0 adultscore=0 mlxlogscore=999 impostorscore=0 phishscore=0 malwarescore=0 priorityscore=1501 clxscore=1011 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2303140103 X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_EF,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1760346305366458173?= X-GMAIL-MSGID: =?utf-8?q?1760346305366458173?= 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 Signed-off-by: Niklas Schnelle --- drivers/tty/Kconfig | 2 +- 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, 59 insertions(+), 12 deletions(-) diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig index d35fc068da74..20ab18998420 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. 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 fa43df05342b..f57441e31c41 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -400,6 +400,7 @@ 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; @@ -413,6 +414,7 @@ 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) { @@ -462,6 +464,7 @@ 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; @@ -473,6 +476,24 @@ 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); @@ -484,10 +505,12 @@ 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; @@ -518,10 +541,17 @@ 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; @@ -1378,7 +1408,7 @@ 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); @@ -1397,7 +1427,7 @@ 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, @@ -1415,7 +1445,7 @@ 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)) @@ -2365,7 +2395,7 @@ 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 @@ -2447,7 +2477,7 @@ 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 @@ -2490,7 +2520,7 @@ 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 978dc196c29b..c80a45e8bd03 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 625358f44419..c3d69074b6d6 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -878,7 +878,7 @@ 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