| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Torvalds | 1124 | 88.57% | 1 | 7.69% |
| Russell King | 41 | 3.23% | 1 | 7.69% |
| Alan Cox | 35 | 2.76% | 2 | 15.38% |
| Phillip Raffeck | 23 | 1.81% | 1 | 7.69% |
| Geert Uytterhoeven | 22 | 1.73% | 1 | 7.69% |
| Björn Helgaas | 9 | 0.71% | 1 | 7.69% |
| Paul Gortmaker | 6 | 0.47% | 1 | 7.69% |
| Yinghai Lu | 3 | 0.24% | 1 | 7.69% |
| Tejun Heo | 3 | 0.24% | 1 | 7.69% |
| Daniele Forsi | 1 | 0.08% | 1 | 7.69% |
| Peter Hurley | 1 | 0.08% | 1 | 7.69% |
| Greg Kroah-Hartman | 1 | 0.08% | 1 | 7.69% |
| Total | 1269 | 13 |
// SPDX-License-Identifier: GPL-2.0 /* * Driver for the 98626/98644/internal serial interface on hp300/hp400 * (based on the National Semiconductor INS8250/NS16550AF/WD16C552 UARTs) * * Ported from 2.2 and modified to use the normal 8250 driver * by Kars de Jong <jongk@linux-m68k.org>, May 2004. */ #include <linux/module.h> #include <linux/init.h> #include <linux/string.h> #include <linux/kernel.h> #include <linux/serial.h> #include <linux/serial_8250.h> #include <linux/delay.h> #include <linux/dio.h> #include <linux/console.h> #include <linux/slab.h> #include <asm/io.h> #include "8250.h" #if !defined(CONFIG_HPDCA) && !defined(CONFIG_HPAPCI) && !defined(CONFIG_COMPILE_TEST) #warning CONFIG_SERIAL_8250 defined but neither CONFIG_HPDCA nor CONFIG_HPAPCI defined, are you sure? #endif #ifdef CONFIG_HPAPCI struct hp300_port { struct hp300_port *next; /* next port */ int line; /* line (tty) number */ }; static struct hp300_port *hp300_ports; #endif #ifdef CONFIG_HPDCA static int hpdca_init_one(struct dio_dev *d, const struct dio_device_id *ent); static void hpdca_remove_one(struct dio_dev *d); static struct dio_device_id hpdca_dio_tbl[] = { { DIO_ID_DCA0 }, { DIO_ID_DCA0REM }, { DIO_ID_DCA1 }, { DIO_ID_DCA1REM }, { 0 } }; static struct dio_driver hpdca_driver = { .name = "hpdca", .id_table = hpdca_dio_tbl, .probe = hpdca_init_one, .remove = hpdca_remove_one, }; #endif static unsigned int num_ports; extern int hp300_uart_scode; /* Offset to UART registers from base of DCA */ #define UART_OFFSET 17 #define DCA_ID 0x01 /* ID (read), reset (write) */ #define DCA_IC 0x03 /* Interrupt control */ /* Interrupt control */ #define DCA_IC_IE 0x80 /* Master interrupt enable */ #define HPDCA_BAUD_BASE 153600 /* Base address of the Frodo part */ #define FRODO_BASE (0x41c000) /* * Where we find the 8250-like APCI ports, and how far apart they are. */ #define FRODO_APCIBASE 0x0 #define FRODO_APCISPACE 0x20 #define FRODO_APCI_OFFSET(x) (FRODO_APCIBASE + ((x) * FRODO_APCISPACE)) #define HPAPCI_BAUD_BASE 500400 #ifdef CONFIG_SERIAL_8250_CONSOLE /* * Parse the bootinfo to find descriptions for headless console and * debug serial ports and register them with the 8250 driver. */ int __init hp300_setup_serial_console(void) { int scode; struct uart_port port; memset(&port, 0, sizeof(port)); if (hp300_uart_scode < 0 || hp300_uart_scode > DIO_SCMAX) return 0; if (DIO_SCINHOLE(hp300_uart_scode)) return 0; scode = hp300_uart_scode; /* Memory mapped I/O */ port.iotype = UPIO_MEM; port.flags = UPF_SKIP_TEST | UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF; port.type = PORT_UNKNOWN; /* Check for APCI console */ if (scode == 256) { #ifdef CONFIG_HPAPCI pr_info("Serial console is HP APCI 1\n"); port.uartclk = HPAPCI_BAUD_BASE * 16; port.mapbase = (FRODO_BASE + FRODO_APCI_OFFSET(1)); port.membase = (char *)(port.mapbase + DIO_VIRADDRBASE); port.regshift = 2; add_preferred_console("ttyS", port.line, "9600n8"); #else pr_warn("Serial console is APCI but support is disabled (CONFIG_HPAPCI)!\n"); return 0; #endif } else { #ifdef CONFIG_HPDCA unsigned long pa = dio_scodetophysaddr(scode); if (!pa) return 0; pr_info("Serial console is HP DCA at select code %d\n", scode); port.uartclk = HPDCA_BAUD_BASE * 16; port.mapbase = (pa + UART_OFFSET); port.membase = (char *)(port.mapbase + DIO_VIRADDRBASE); port.regshift = 1; port.irq = DIO_IPL(pa + DIO_VIRADDRBASE); /* Enable board-interrupts */ out_8(pa + DIO_VIRADDRBASE + DCA_IC, DCA_IC_IE); if (DIO_ID(pa + DIO_VIRADDRBASE) & 0x80) add_preferred_console("ttyS", port.line, "9600n8"); #else pr_warn("Serial console is DCA but support is disabled (CONFIG_HPDCA)!\n"); return 0; #endif } if (early_serial_setup(&port) < 0) pr_warn("%s: early_serial_setup() failed.\n", __func__); return 0; } #endif /* CONFIG_SERIAL_8250_CONSOLE */ #ifdef CONFIG_HPDCA static int hpdca_init_one(struct dio_dev *d, const struct dio_device_id *ent) { struct uart_8250_port uart; int line; #ifdef CONFIG_SERIAL_8250_CONSOLE if (hp300_uart_scode == d->scode) { /* Already got it. */ return 0; } #endif memset(&uart, 0, sizeof(uart)); /* Memory mapped I/O */ uart.port.iotype = UPIO_MEM; uart.port.flags = UPF_SKIP_TEST | UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF; uart.port.irq = d->ipl; uart.port.uartclk = HPDCA_BAUD_BASE * 16; uart.port.mapbase = (d->resource.start + UART_OFFSET); uart.port.membase = (char *)(uart.port.mapbase + DIO_VIRADDRBASE); uart.port.regshift = 1; uart.port.dev = &d->dev; line = serial8250_register_8250_port(&uart); if (line < 0) { dev_notice(&d->dev, "8250_hp300: register_serial() DCA scode %d irq %d failed\n", d->scode, uart.port.irq); return -ENOMEM; } /* Enable board-interrupts */ out_8(d->resource.start + DIO_VIRADDRBASE + DCA_IC, DCA_IC_IE); dio_set_drvdata(d, (void *)line); /* Reset the DCA */ out_8(d->resource.start + DIO_VIRADDRBASE + DCA_ID, 0xff); udelay(100); num_ports++; return 0; } #endif static int __init hp300_8250_init(void) { static int called; #ifdef CONFIG_HPAPCI int line; unsigned long base; struct uart_8250_port uart; struct hp300_port *port; int i; #endif if (called) return -ENODEV; called = 1; if (!MACH_IS_HP300) return -ENODEV; #ifdef CONFIG_HPDCA dio_register_driver(&hpdca_driver); #endif #ifdef CONFIG_HPAPCI if (hp300_model < HP_400) { if (!num_ports) return -ENODEV; return 0; } /* These models have the Frodo chip. * Port 0 is reserved for the Apollo Domain keyboard. * Port 1 is either the console or the DCA. */ for (i = 1; i < 4; i++) { /* Port 1 is the console on a 425e, on other machines it's * mapped to DCA. */ #ifdef CONFIG_SERIAL_8250_CONSOLE if (i == 1) continue; #endif /* Create new serial device */ port = kmalloc(sizeof(struct hp300_port), GFP_KERNEL); if (!port) return -ENOMEM; memset(&uart, 0, sizeof(uart)); base = (FRODO_BASE + FRODO_APCI_OFFSET(i)); /* Memory mapped I/O */ uart.port.iotype = UPIO_MEM; uart.port.flags = UPF_SKIP_TEST | UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF; /* XXX - no interrupt support yet */ uart.port.irq = 0; uart.port.uartclk = HPAPCI_BAUD_BASE * 16; uart.port.mapbase = base; uart.port.membase = (char *)(base + DIO_VIRADDRBASE); uart.port.regshift = 2; line = serial8250_register_8250_port(&uart); if (line < 0) { dev_notice(uart.port.dev, "8250_hp300: register_serial() APCI %d irq %d failed\n", i, uart.port.irq); kfree(port); continue; } port->line = line; port->next = hp300_ports; hp300_ports = port; num_ports++; } #endif /* Any boards found? */ if (!num_ports) return -ENODEV; return 0; } #ifdef CONFIG_HPDCA static void hpdca_remove_one(struct dio_dev *d) { int line; line = (int) dio_get_drvdata(d); if (d->resource.start) { /* Disable board-interrupts */ out_8(d->resource.start + DIO_VIRADDRBASE + DCA_IC, 0); } serial8250_unregister_port(line); } #endif static void __exit hp300_8250_exit(void) { #ifdef CONFIG_HPAPCI struct hp300_port *port, *to_free; for (port = hp300_ports; port; ) { serial8250_unregister_port(port->line); to_free = port; port = port->next; kfree(to_free); } hp300_ports = NULL; #endif #ifdef CONFIG_HPDCA dio_unregister_driver(&hpdca_driver); #endif } module_init(hp300_8250_init); module_exit(hp300_8250_exit); MODULE_DESCRIPTION("HP DCA/APCI serial driver"); MODULE_AUTHOR("Kars de Jong <jongk@linux-m68k.org>"); MODULE_LICENSE("GPL");