diff options
Diffstat (limited to 'drivers/parport/parport_ip32.c')
| -rw-r--r-- | drivers/parport/parport_ip32.c | 174 |
1 files changed, 75 insertions, 99 deletions
diff --git a/drivers/parport/parport_ip32.c b/drivers/parport/parport_ip32.c index d4716273651e..0919ed99ba94 100644 --- a/drivers/parport/parport_ip32.c +++ b/drivers/parport/parport_ip32.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* Low-level parallel port routines for built-in port on SGI IP32 * * Author: Arnaud Giersch <arnaud.giersch@free.fr> @@ -9,20 +10,6 @@ * Thanks to Ilya A. Volynets-Evenbakh for his help. * * Copyright (C) 2005, 2006 Arnaud Giersch. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., 59 - * Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Current status: @@ -102,7 +89,7 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/parport.h> -#include <linux/sched.h> +#include <linux/sched/signal.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/stddef.h> @@ -138,7 +125,7 @@ static unsigned int features = ~0U; static bool verbose_probing = DEFAULT_VERBOSE_PROBING; /* We do not support more than one port. */ -static struct parport *this_port = NULL; +static struct parport *this_port; /* Timing constants for FIFO modes. */ #define FIFO_NFAULT_TIMEOUT 100 /* milliseconds */ @@ -341,19 +328,19 @@ static void parport_ip32_dump_state(struct parport *p, char *str, "TST", "CFG"}; unsigned int ecr = readb(priv->regs.ecr); printk(KERN_DEBUG PPIP32 " ecr=0x%02x", ecr); - printk(" %s", - ecr_modes[(ecr & ECR_MODE_MASK) >> ECR_MODE_SHIFT]); + pr_cont(" %s", + ecr_modes[(ecr & ECR_MODE_MASK) >> ECR_MODE_SHIFT]); if (ecr & ECR_nERRINTR) - printk(",nErrIntrEn"); + pr_cont(",nErrIntrEn"); if (ecr & ECR_DMAEN) - printk(",dmaEn"); + pr_cont(",dmaEn"); if (ecr & ECR_SERVINTR) - printk(",serviceIntr"); + pr_cont(",serviceIntr"); if (ecr & ECR_F_FULL) - printk(",f_full"); + pr_cont(",f_full"); if (ecr & ECR_F_EMPTY) - printk(",f_empty"); - printk("\n"); + pr_cont(",f_empty"); + pr_cont("\n"); } if (show_ecp_config) { unsigned int oecr, cnfgA, cnfgB; @@ -365,52 +352,53 @@ static void parport_ip32_dump_state(struct parport *p, char *str, writeb(ECR_MODE_PS2, priv->regs.ecr); writeb(oecr, priv->regs.ecr); printk(KERN_DEBUG PPIP32 " cnfgA=0x%02x", cnfgA); - printk(" ISA-%s", (cnfgA & CNFGA_IRQ) ? "Level" : "Pulses"); + pr_cont(" ISA-%s", (cnfgA & CNFGA_IRQ) ? "Level" : "Pulses"); switch (cnfgA & CNFGA_ID_MASK) { case CNFGA_ID_8: - printk(",8 bits"); + pr_cont(",8 bits"); break; case CNFGA_ID_16: - printk(",16 bits"); + pr_cont(",16 bits"); break; case CNFGA_ID_32: - printk(",32 bits"); + pr_cont(",32 bits"); break; default: - printk(",unknown ID"); + pr_cont(",unknown ID"); break; } if (!(cnfgA & CNFGA_nBYTEINTRANS)) - printk(",ByteInTrans"); + pr_cont(",ByteInTrans"); if ((cnfgA & CNFGA_ID_MASK) != CNFGA_ID_8) - printk(",%d byte%s left", cnfgA & CNFGA_PWORDLEFT, - ((cnfgA & CNFGA_PWORDLEFT) > 1) ? "s" : ""); - printk("\n"); + pr_cont(",%d byte%s left", + cnfgA & CNFGA_PWORDLEFT, + ((cnfgA & CNFGA_PWORDLEFT) > 1) ? "s" : ""); + pr_cont("\n"); printk(KERN_DEBUG PPIP32 " cnfgB=0x%02x", cnfgB); - printk(" irq=%u,dma=%u", - (cnfgB & CNFGB_IRQ_MASK) >> CNFGB_IRQ_SHIFT, - (cnfgB & CNFGB_DMA_MASK) >> CNFGB_DMA_SHIFT); - printk(",intrValue=%d", !!(cnfgB & CNFGB_INTRVAL)); + pr_cont(" irq=%u,dma=%u", + (cnfgB & CNFGB_IRQ_MASK) >> CNFGB_IRQ_SHIFT, + (cnfgB & CNFGB_DMA_MASK) >> CNFGB_DMA_SHIFT); + pr_cont(",intrValue=%d", !!(cnfgB & CNFGB_INTRVAL)); if (cnfgB & CNFGB_COMPRESS) - printk(",compress"); - printk("\n"); + pr_cont(",compress"); + pr_cont("\n"); } for (i = 0; i < 2; i++) { unsigned int dcr = i ? priv->dcr_cache : readb(priv->regs.dcr); printk(KERN_DEBUG PPIP32 " dcr(%s)=0x%02x", i ? "soft" : "hard", dcr); - printk(" %s", (dcr & DCR_DIR) ? "rev" : "fwd"); + pr_cont(" %s", (dcr & DCR_DIR) ? "rev" : "fwd"); if (dcr & DCR_IRQ) - printk(",ackIntEn"); + pr_cont(",ackIntEn"); if (!(dcr & DCR_SELECT)) - printk(",nSelectIn"); + pr_cont(",nSelectIn"); if (dcr & DCR_nINIT) - printk(",nInit"); + pr_cont(",nInit"); if (!(dcr & DCR_AUTOFD)) - printk(",nAutoFD"); + pr_cont(",nAutoFD"); if (!(dcr & DCR_STROBE)) - printk(",nStrobe"); - printk("\n"); + pr_cont(",nStrobe"); + pr_cont("\n"); } #define sep (f++ ? ',' : ' ') { @@ -418,20 +406,20 @@ static void parport_ip32_dump_state(struct parport *p, char *str, unsigned int dsr = readb(priv->regs.dsr); printk(KERN_DEBUG PPIP32 " dsr=0x%02x", dsr); if (!(dsr & DSR_nBUSY)) - printk("%cBusy", sep); + pr_cont("%cBusy", sep); if (dsr & DSR_nACK) - printk("%cnAck", sep); + pr_cont("%cnAck", sep); if (dsr & DSR_PERROR) - printk("%cPError", sep); + pr_cont("%cPError", sep); if (dsr & DSR_SELECT) - printk("%cSelect", sep); + pr_cont("%cSelect", sep); if (dsr & DSR_nFAULT) - printk("%cnFault", sep); + pr_cont("%cnFault", sep); if (!(dsr & DSR_nPRINT)) - printk("%c(Print)", sep); + pr_cont("%c(Print)", sep); if (dsr & DSR_TIMEOUT) - printk("%cTimeout", sep); - printk("\n"); + pr_cont("%cTimeout", sep); + pr_cont("\n"); } #undef sep } @@ -568,6 +556,7 @@ static irqreturn_t parport_ip32_merr_interrupt(int irq, void *dev_id) /** * parport_ip32_dma_start - begins a DMA transfer + * @p: partport to work on * @dir: DMA direction: DMA_TO_DEVICE or DMA_FROM_DEVICE * @addr: pointer to data buffer * @count: buffer size @@ -575,8 +564,8 @@ static irqreturn_t parport_ip32_merr_interrupt(int irq, void *dev_id) * Calls to parport_ip32_dma_start() and parport_ip32_dma_stop() must be * correctly balanced. */ -static int parport_ip32_dma_start(enum dma_data_direction dir, - void *addr, size_t count) +static int parport_ip32_dma_start(struct parport *p, + enum dma_data_direction dir, void *addr, size_t count) { unsigned int limit; u64 ctrl; @@ -601,7 +590,7 @@ static int parport_ip32_dma_start(enum dma_data_direction dir, /* Prepare DMA pointers */ parport_ip32_dma.dir = dir; - parport_ip32_dma.buf = dma_map_single(NULL, addr, count, dir); + parport_ip32_dma.buf = dma_map_single(&p->bus_dev, addr, count, dir); parport_ip32_dma.len = count; parport_ip32_dma.next = parport_ip32_dma.buf; parport_ip32_dma.left = parport_ip32_dma.len; @@ -625,11 +614,12 @@ static int parport_ip32_dma_start(enum dma_data_direction dir, /** * parport_ip32_dma_stop - ends a running DMA transfer + * @p: partport to work on * * Calls to parport_ip32_dma_start() and parport_ip32_dma_stop() must be * correctly balanced. */ -static void parport_ip32_dma_stop(void) +static void parport_ip32_dma_stop(struct parport *p) { u64 ctx_a; u64 ctx_b; @@ -685,8 +675,8 @@ static void parport_ip32_dma_stop(void) enable_irq(MACEISA_PAR_CTXB_IRQ); parport_ip32_dma.irq_on = 1; - dma_unmap_single(NULL, parport_ip32_dma.buf, parport_ip32_dma.len, - parport_ip32_dma.dir); + dma_unmap_single(&p->bus_dev, parport_ip32_dma.buf, + parport_ip32_dma.len, parport_ip32_dma.dir); } /** @@ -1331,7 +1321,7 @@ static unsigned int parport_ip32_fwp_wait_interrupt(struct parport *p) break; /* Initialize mutex used to take interrupts into account */ - INIT_COMPLETION(priv->irq_complete); + reinit_completion(&priv->irq_complete); /* Enable serviceIntr */ parport_ip32_frob_econtrol(p, ECR_SERVINTR, 0); @@ -1348,9 +1338,8 @@ static unsigned int parport_ip32_fwp_wait_interrupt(struct parport *p) ecr = parport_ip32_read_econtrol(p); if ((ecr & ECR_F_EMPTY) && !(ecr & ECR_SERVINTR) && !lost_interrupt) { - printk(KERN_WARNING PPIP32 - "%s: lost interrupt in %s\n", - p->name, __func__); + pr_warn(PPIP32 "%s: lost interrupt in %s\n", + p->name, __func__); lost_interrupt = 1; } } @@ -1445,8 +1434,8 @@ static size_t parport_ip32_fifo_write_block_dma(struct parport *p, priv->irq_mode = PARPORT_IP32_IRQ_HERE; - parport_ip32_dma_start(DMA_TO_DEVICE, (void *)buf, len); - INIT_COMPLETION(priv->irq_complete); + parport_ip32_dma_start(p, DMA_TO_DEVICE, (void *)buf, len); + reinit_completion(&priv->irq_complete); parport_ip32_frob_econtrol(p, ECR_DMAEN | ECR_SERVINTR, ECR_DMAEN); nfault_timeout = min((unsigned long)physport->cad->timeout, @@ -1461,7 +1450,7 @@ static size_t parport_ip32_fifo_write_block_dma(struct parport *p, if (ecr & ECR_SERVINTR) break; /* DMA transfer just finished */ } - parport_ip32_dma_stop(); + parport_ip32_dma_stop(p); written = len - parport_ip32_dma_get_residue(); priv->irq_mode = PARPORT_IP32_IRQ_FWD; @@ -1654,8 +1643,8 @@ static size_t parport_ip32_compat_write_data(struct parport *p, DSR_nBUSY | DSR_nFAULT)) { /* Avoid to flood the logs */ if (ready_before) - printk(KERN_INFO PPIP32 "%s: not ready in %s\n", - p->name, __func__); + pr_info(PPIP32 "%s: not ready in %s\n", + p->name, __func__); ready_before = 0; goto stop; } @@ -1715,7 +1704,7 @@ static size_t parport_ip32_ecp_write_data(struct parport *p, /* Event 49: PError goes high. */ if (parport_wait_peripheral(p, DSR_PERROR, DSR_PERROR)) { - printk(KERN_DEBUG PPIP32 "%s: PError timeout in %s", + printk(KERN_DEBUG PPIP32 "%s: PError timeout in %s\n", p->name, __func__); physport->ieee1284.phase = IEEE1284_PH_ECP_DIR_UNKNOWN; return 0; @@ -1735,8 +1724,8 @@ static size_t parport_ip32_ecp_write_data(struct parport *p, DSR_nBUSY | DSR_nFAULT)) { /* Avoid to flood the logs */ if (ready_before) - printk(KERN_INFO PPIP32 "%s: not ready in %s\n", - p->name, __func__); + pr_info(PPIP32 "%s: not ready in %s\n", + p->name, __func__); ready_before = 0; goto stop; } @@ -1769,7 +1758,7 @@ stop: /*--- Default parport operations ---------------------------------------*/ -static __initdata struct parport_operations parport_ip32_ops = { +static const struct parport_operations parport_ip32_ops __initconst = { .write_data = parport_ip32_write_data, .read_data = parport_ip32_read_data, @@ -2075,8 +2064,7 @@ static __init struct parport *parport_ip32_probe_port(void) p->modes |= PARPORT_MODE_TRISTATE; if (!parport_ip32_fifo_supported(p)) { - printk(KERN_WARNING PPIP32 - "%s: error: FIFO disabled\n", p->name); + pr_warn(PPIP32 "%s: error: FIFO disabled\n", p->name); /* Disable hardware modes depending on a working FIFO. */ features &= ~PARPORT_IP32_ENABLE_SPP; features &= ~PARPORT_IP32_ENABLE_ECP; @@ -2088,8 +2076,7 @@ static __init struct parport *parport_ip32_probe_port(void) if (features & PARPORT_IP32_ENABLE_IRQ) { int irq = MACEISA_PARALLEL_IRQ; if (request_irq(irq, parport_ip32_interrupt, 0, p->name, p)) { - printk(KERN_WARNING PPIP32 - "%s: error: IRQ disabled\n", p->name); + pr_warn(PPIP32 "%s: error: IRQ disabled\n", p->name); /* DMA cannot work without interrupts. */ features &= ~PARPORT_IP32_ENABLE_DMA; } else { @@ -2102,8 +2089,7 @@ static __init struct parport *parport_ip32_probe_port(void) /* Allocate DMA resources */ if (features & PARPORT_IP32_ENABLE_DMA) { if (parport_ip32_dma_register()) - printk(KERN_WARNING PPIP32 - "%s: error: DMA disabled\n", p->name); + pr_warn(PPIP32 "%s: error: DMA disabled\n", p->name); else { pr_probe(p, "DMA support enabled\n"); p->dma = 0; /* arbitrary value != PARPORT_DMA_NONE */ @@ -2145,13 +2131,15 @@ static __init struct parport *parport_ip32_probe_port(void) parport_ip32_dump_state(p, "end init", 0); /* Print out what we found */ - printk(KERN_INFO "%s: SGI IP32 at 0x%lx (0x%lx)", - p->name, p->base, p->base_hi); + pr_info("%s: SGI IP32 at 0x%lx (0x%lx)", p->name, p->base, p->base_hi); if (p->irq != PARPORT_IRQ_NONE) - printk(", irq %d", p->irq); - printk(" ["); -#define printmode(x) if (p->modes & PARPORT_MODE_##x) \ - printk("%s%s", f++ ? "," : "", #x) + pr_cont(", irq %d", p->irq); + pr_cont(" ["); +#define printmode(x) \ +do { \ + if (p->modes & PARPORT_MODE_##x) \ + pr_cont("%s%s", f++ ? "," : "", #x); \ +} while (0) { unsigned int f = 0; printmode(PCSPP); @@ -2162,7 +2150,7 @@ static __init struct parport *parport_ip32_probe_port(void) printmode(DMA); } #undef printmode - printk("]\n"); + pr_cont("]\n"); parport_announce_port(p); return p; @@ -2204,7 +2192,7 @@ static int __init parport_ip32_init(void) { pr_info(PPIP32 "SGI IP32 built-in parallel port driver v0.6\n"); this_port = parport_ip32_probe_port(); - return IS_ERR(this_port) ? PTR_ERR(this_port) : 0; + return PTR_ERR_OR_ZERO(this_port); } /** @@ -2236,15 +2224,3 @@ MODULE_PARM_DESC(features, ", bit 2: hardware SPP mode" ", bit 3: hardware EPP mode" ", bit 4: hardware ECP mode"); - -/*--- Inform (X)Emacs about preferred coding style ---------------------*/ -/* - * Local Variables: - * mode: c - * c-file-style: "linux" - * indent-tabs-mode: t - * tab-width: 8 - * fill-column: 78 - * ispell-local-dictionary: "american" - * End: - */ |