mirror of
https://github.com/torvalds/linux.git
synced 2024-12-05 10:32:35 +00:00
6396bb2215
The kzalloc() function has a 2-factor argument form, kcalloc(). This patch replaces cases of: kzalloc(a * b, gfp) with: kcalloc(a * b, gfp) as well as handling cases of: kzalloc(a * b * c, gfp) with: kzalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kzalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kzalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kzalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kzalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kzalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(char) * COUNT + COUNT , ...) | kzalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kzalloc + kcalloc ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kzalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kzalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kzalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kzalloc(C1 * C2 * C3, ...) | kzalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kzalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kzalloc(sizeof(THING) * C2, ...) | kzalloc(sizeof(TYPE) * C2, ...) | kzalloc(C1 * C2 * C3, ...) | kzalloc(C1 * C2, ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - (E1) * E2 + E1, E2 , ...) | - kzalloc + kcalloc ( - (E1) * (E2) + E1, E2 , ...) | - kzalloc + kcalloc ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
778 lines
18 KiB
C
778 lines
18 KiB
C
/*
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* Driver for the Cirrus PD6729 PCI-PCMCIA bridge.
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*
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* Based on the i82092.c driver.
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*
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* This software may be used and distributed according to the terms of
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* the GNU General Public License, incorporated herein by reference.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/workqueue.h>
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#include <linux/interrupt.h>
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#include <linux/device.h>
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#include <linux/io.h>
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#include <pcmcia/ss.h>
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#include "pd6729.h"
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#include "i82365.h"
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#include "cirrus.h"
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("Driver for the Cirrus PD6729 PCI-PCMCIA bridge");
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MODULE_AUTHOR("Jun Komuro <komurojun-mbn@nifty.com>");
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#define MAX_SOCKETS 2
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/*
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* simple helper functions
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* External clock time, in nanoseconds. 120 ns = 8.33 MHz
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*/
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#define to_cycles(ns) ((ns)/120)
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#ifndef NO_IRQ
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#define NO_IRQ ((unsigned int)(0))
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#endif
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/*
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* PARAMETERS
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* irq_mode=n
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* Specifies the interrupt delivery mode. The default (1) is to use PCI
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* interrupts; a value of 0 selects ISA interrupts. This must be set for
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* correct operation of PCI card readers.
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*/
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static int irq_mode = 1; /* 0 = ISA interrupt, 1 = PCI interrupt */
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module_param(irq_mode, int, 0444);
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MODULE_PARM_DESC(irq_mode,
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"interrupt delivery mode. 0 = ISA, 1 = PCI. default is 1");
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static DEFINE_SPINLOCK(port_lock);
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/* basic value read/write functions */
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static unsigned char indirect_read(struct pd6729_socket *socket,
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unsigned short reg)
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{
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unsigned long port;
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unsigned char val;
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unsigned long flags;
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spin_lock_irqsave(&port_lock, flags);
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reg += socket->number * 0x40;
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port = socket->io_base;
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outb(reg, port);
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val = inb(port + 1);
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spin_unlock_irqrestore(&port_lock, flags);
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return val;
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}
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static unsigned short indirect_read16(struct pd6729_socket *socket,
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unsigned short reg)
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{
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unsigned long port;
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unsigned short tmp;
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unsigned long flags;
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spin_lock_irqsave(&port_lock, flags);
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reg = reg + socket->number * 0x40;
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port = socket->io_base;
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outb(reg, port);
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tmp = inb(port + 1);
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reg++;
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outb(reg, port);
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tmp = tmp | (inb(port + 1) << 8);
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spin_unlock_irqrestore(&port_lock, flags);
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return tmp;
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}
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static void indirect_write(struct pd6729_socket *socket, unsigned short reg,
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unsigned char value)
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{
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unsigned long port;
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unsigned long flags;
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spin_lock_irqsave(&port_lock, flags);
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reg = reg + socket->number * 0x40;
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port = socket->io_base;
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outb(reg, port);
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outb(value, port + 1);
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spin_unlock_irqrestore(&port_lock, flags);
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}
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static void indirect_setbit(struct pd6729_socket *socket, unsigned short reg,
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unsigned char mask)
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{
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unsigned long port;
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unsigned char val;
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unsigned long flags;
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spin_lock_irqsave(&port_lock, flags);
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reg = reg + socket->number * 0x40;
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port = socket->io_base;
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outb(reg, port);
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val = inb(port + 1);
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val |= mask;
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outb(reg, port);
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outb(val, port + 1);
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spin_unlock_irqrestore(&port_lock, flags);
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}
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static void indirect_resetbit(struct pd6729_socket *socket, unsigned short reg,
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unsigned char mask)
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{
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unsigned long port;
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unsigned char val;
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unsigned long flags;
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spin_lock_irqsave(&port_lock, flags);
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reg = reg + socket->number * 0x40;
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port = socket->io_base;
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outb(reg, port);
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val = inb(port + 1);
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val &= ~mask;
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outb(reg, port);
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outb(val, port + 1);
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spin_unlock_irqrestore(&port_lock, flags);
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}
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static void indirect_write16(struct pd6729_socket *socket, unsigned short reg,
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unsigned short value)
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{
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unsigned long port;
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unsigned char val;
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unsigned long flags;
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spin_lock_irqsave(&port_lock, flags);
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reg = reg + socket->number * 0x40;
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port = socket->io_base;
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outb(reg, port);
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val = value & 255;
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outb(val, port + 1);
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reg++;
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outb(reg, port);
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val = value >> 8;
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outb(val, port + 1);
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spin_unlock_irqrestore(&port_lock, flags);
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}
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/* Interrupt handler functionality */
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static irqreturn_t pd6729_interrupt(int irq, void *dev)
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{
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struct pd6729_socket *socket = (struct pd6729_socket *)dev;
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int i;
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int loopcount = 0;
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int handled = 0;
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unsigned int events, active = 0;
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while (1) {
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loopcount++;
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if (loopcount > 20) {
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printk(KERN_ERR "pd6729: infinite eventloop "
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"in interrupt\n");
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break;
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}
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active = 0;
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for (i = 0; i < MAX_SOCKETS; i++) {
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unsigned int csc;
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/* card status change register */
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csc = indirect_read(&socket[i], I365_CSC);
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if (csc == 0) /* no events on this socket */
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continue;
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handled = 1;
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events = 0;
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if (csc & I365_CSC_DETECT) {
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events |= SS_DETECT;
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dev_vdbg(&socket[i].socket.dev,
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"Card detected in socket %i!\n", i);
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}
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if (indirect_read(&socket[i], I365_INTCTL)
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& I365_PC_IOCARD) {
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/* For IO/CARDS, bit 0 means "read the card" */
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events |= (csc & I365_CSC_STSCHG)
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? SS_STSCHG : 0;
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} else {
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/* Check for battery/ready events */
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events |= (csc & I365_CSC_BVD1)
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? SS_BATDEAD : 0;
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events |= (csc & I365_CSC_BVD2)
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? SS_BATWARN : 0;
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events |= (csc & I365_CSC_READY)
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? SS_READY : 0;
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}
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if (events)
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pcmcia_parse_events(&socket[i].socket, events);
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active |= events;
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}
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if (active == 0) /* no more events to handle */
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break;
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}
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return IRQ_RETVAL(handled);
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}
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/* socket functions */
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static void pd6729_interrupt_wrapper(struct timer_list *t)
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{
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struct pd6729_socket *socket = from_timer(socket, t, poll_timer);
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pd6729_interrupt(0, (void *)socket);
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mod_timer(&socket->poll_timer, jiffies + HZ);
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}
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static int pd6729_get_status(struct pcmcia_socket *sock, u_int *value)
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{
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struct pd6729_socket *socket
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= container_of(sock, struct pd6729_socket, socket);
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unsigned int status;
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unsigned int data;
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struct pd6729_socket *t;
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/* Interface Status Register */
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status = indirect_read(socket, I365_STATUS);
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*value = 0;
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if ((status & I365_CS_DETECT) == I365_CS_DETECT)
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*value |= SS_DETECT;
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/*
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* IO cards have a different meaning of bits 0,1
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* Also notice the inverse-logic on the bits
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*/
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if (indirect_read(socket, I365_INTCTL) & I365_PC_IOCARD) {
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/* IO card */
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if (!(status & I365_CS_STSCHG))
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*value |= SS_STSCHG;
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} else {
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/* non I/O card */
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if (!(status & I365_CS_BVD1))
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*value |= SS_BATDEAD;
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if (!(status & I365_CS_BVD2))
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*value |= SS_BATWARN;
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}
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if (status & I365_CS_WRPROT)
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*value |= SS_WRPROT; /* card is write protected */
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if (status & I365_CS_READY)
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*value |= SS_READY; /* card is not busy */
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if (status & I365_CS_POWERON)
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*value |= SS_POWERON; /* power is applied to the card */
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t = (socket->number) ? socket : socket + 1;
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indirect_write(t, PD67_EXT_INDEX, PD67_EXTERN_DATA);
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data = indirect_read16(t, PD67_EXT_DATA);
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*value |= (data & PD67_EXD_VS1(socket->number)) ? 0 : SS_3VCARD;
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return 0;
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}
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static int pd6729_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
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{
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struct pd6729_socket *socket
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= container_of(sock, struct pd6729_socket, socket);
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unsigned char reg, data;
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/* First, set the global controller options */
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indirect_write(socket, I365_GBLCTL, 0x00);
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indirect_write(socket, I365_GENCTL, 0x00);
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/* Values for the IGENC register */
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socket->card_irq = state->io_irq;
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reg = 0;
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/* The reset bit has "inverse" logic */
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if (!(state->flags & SS_RESET))
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reg |= I365_PC_RESET;
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if (state->flags & SS_IOCARD)
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reg |= I365_PC_IOCARD;
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/* IGENC, Interrupt and General Control Register */
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indirect_write(socket, I365_INTCTL, reg);
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/* Power registers */
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reg = I365_PWR_NORESET; /* default: disable resetdrv on resume */
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if (state->flags & SS_PWR_AUTO) {
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dev_dbg(&sock->dev, "Auto power\n");
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reg |= I365_PWR_AUTO; /* automatic power mngmnt */
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}
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if (state->flags & SS_OUTPUT_ENA) {
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dev_dbg(&sock->dev, "Power Enabled\n");
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reg |= I365_PWR_OUT; /* enable power */
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}
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switch (state->Vcc) {
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case 0:
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break;
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case 33:
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dev_dbg(&sock->dev,
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"setting voltage to Vcc to 3.3V on socket %i\n",
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socket->number);
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reg |= I365_VCC_5V;
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indirect_setbit(socket, PD67_MISC_CTL_1, PD67_MC1_VCC_3V);
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break;
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case 50:
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dev_dbg(&sock->dev,
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"setting voltage to Vcc to 5V on socket %i\n",
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socket->number);
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reg |= I365_VCC_5V;
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indirect_resetbit(socket, PD67_MISC_CTL_1, PD67_MC1_VCC_3V);
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break;
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default:
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dev_dbg(&sock->dev,
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"pd6729_set_socket called with invalid VCC power "
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"value: %i\n", state->Vcc);
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return -EINVAL;
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}
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switch (state->Vpp) {
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case 0:
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dev_dbg(&sock->dev, "not setting Vpp on socket %i\n",
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socket->number);
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break;
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case 33:
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case 50:
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dev_dbg(&sock->dev, "setting Vpp to Vcc for socket %i\n",
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socket->number);
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reg |= I365_VPP1_5V;
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break;
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case 120:
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dev_dbg(&sock->dev, "setting Vpp to 12.0\n");
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reg |= I365_VPP1_12V;
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break;
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default:
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dev_dbg(&sock->dev, "pd6729: pd6729_set_socket called with "
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"invalid VPP power value: %i\n", state->Vpp);
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return -EINVAL;
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}
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/* only write if changed */
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if (reg != indirect_read(socket, I365_POWER))
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indirect_write(socket, I365_POWER, reg);
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if (irq_mode == 1) {
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/* all interrupts are to be done as PCI interrupts */
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data = PD67_EC1_INV_MGMT_IRQ | PD67_EC1_INV_CARD_IRQ;
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} else
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data = 0;
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indirect_write(socket, PD67_EXT_INDEX, PD67_EXT_CTL_1);
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indirect_write(socket, PD67_EXT_DATA, data);
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/* Enable specific interrupt events */
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reg = 0x00;
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if (state->csc_mask & SS_DETECT)
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reg |= I365_CSC_DETECT;
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if (state->flags & SS_IOCARD) {
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if (state->csc_mask & SS_STSCHG)
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reg |= I365_CSC_STSCHG;
|
|
} else {
|
|
if (state->csc_mask & SS_BATDEAD)
|
|
reg |= I365_CSC_BVD1;
|
|
if (state->csc_mask & SS_BATWARN)
|
|
reg |= I365_CSC_BVD2;
|
|
if (state->csc_mask & SS_READY)
|
|
reg |= I365_CSC_READY;
|
|
}
|
|
if (irq_mode == 1)
|
|
reg |= 0x30; /* management IRQ: PCI INTA# = "irq 3" */
|
|
indirect_write(socket, I365_CSCINT, reg);
|
|
|
|
reg = indirect_read(socket, I365_INTCTL);
|
|
if (irq_mode == 1)
|
|
reg |= 0x03; /* card IRQ: PCI INTA# = "irq 3" */
|
|
else
|
|
reg |= socket->card_irq;
|
|
indirect_write(socket, I365_INTCTL, reg);
|
|
|
|
/* now clear the (probably bogus) pending stuff by doing a dummy read */
|
|
(void)indirect_read(socket, I365_CSC);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pd6729_set_io_map(struct pcmcia_socket *sock,
|
|
struct pccard_io_map *io)
|
|
{
|
|
struct pd6729_socket *socket
|
|
= container_of(sock, struct pd6729_socket, socket);
|
|
unsigned char map, ioctl;
|
|
|
|
map = io->map;
|
|
|
|
/* Check error conditions */
|
|
if (map > 1) {
|
|
dev_dbg(&sock->dev, "pd6729_set_io_map with invalid map\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Turn off the window before changing anything */
|
|
if (indirect_read(socket, I365_ADDRWIN) & I365_ENA_IO(map))
|
|
indirect_resetbit(socket, I365_ADDRWIN, I365_ENA_IO(map));
|
|
|
|
/* dev_dbg(&sock->dev, "set_io_map: Setting range to %x - %x\n",
|
|
io->start, io->stop);*/
|
|
|
|
/* write the new values */
|
|
indirect_write16(socket, I365_IO(map)+I365_W_START, io->start);
|
|
indirect_write16(socket, I365_IO(map)+I365_W_STOP, io->stop);
|
|
|
|
ioctl = indirect_read(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
|
|
|
|
if (io->flags & MAP_0WS)
|
|
ioctl |= I365_IOCTL_0WS(map);
|
|
if (io->flags & MAP_16BIT)
|
|
ioctl |= I365_IOCTL_16BIT(map);
|
|
if (io->flags & MAP_AUTOSZ)
|
|
ioctl |= I365_IOCTL_IOCS16(map);
|
|
|
|
indirect_write(socket, I365_IOCTL, ioctl);
|
|
|
|
/* Turn the window back on if needed */
|
|
if (io->flags & MAP_ACTIVE)
|
|
indirect_setbit(socket, I365_ADDRWIN, I365_ENA_IO(map));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pd6729_set_mem_map(struct pcmcia_socket *sock,
|
|
struct pccard_mem_map *mem)
|
|
{
|
|
struct pd6729_socket *socket
|
|
= container_of(sock, struct pd6729_socket, socket);
|
|
unsigned short base, i;
|
|
unsigned char map;
|
|
|
|
map = mem->map;
|
|
if (map > 4) {
|
|
dev_warn(&sock->dev, "invalid map requested\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if ((mem->res->start > mem->res->end) || (mem->speed > 1000)) {
|
|
dev_warn(&sock->dev, "invalid invalid address / speed\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Turn off the window before changing anything */
|
|
if (indirect_read(socket, I365_ADDRWIN) & I365_ENA_MEM(map))
|
|
indirect_resetbit(socket, I365_ADDRWIN, I365_ENA_MEM(map));
|
|
|
|
/* write the start address */
|
|
base = I365_MEM(map);
|
|
i = (mem->res->start >> 12) & 0x0fff;
|
|
if (mem->flags & MAP_16BIT)
|
|
i |= I365_MEM_16BIT;
|
|
if (mem->flags & MAP_0WS)
|
|
i |= I365_MEM_0WS;
|
|
indirect_write16(socket, base + I365_W_START, i);
|
|
|
|
/* write the stop address */
|
|
|
|
i = (mem->res->end >> 12) & 0x0fff;
|
|
switch (to_cycles(mem->speed)) {
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
i |= I365_MEM_WS0;
|
|
break;
|
|
case 2:
|
|
i |= I365_MEM_WS1;
|
|
break;
|
|
default:
|
|
i |= I365_MEM_WS1 | I365_MEM_WS0;
|
|
break;
|
|
}
|
|
|
|
indirect_write16(socket, base + I365_W_STOP, i);
|
|
|
|
/* Take care of high byte */
|
|
indirect_write(socket, PD67_EXT_INDEX, PD67_MEM_PAGE(map));
|
|
indirect_write(socket, PD67_EXT_DATA, mem->res->start >> 24);
|
|
|
|
/* card start */
|
|
|
|
i = ((mem->card_start - mem->res->start) >> 12) & 0x3fff;
|
|
if (mem->flags & MAP_WRPROT)
|
|
i |= I365_MEM_WRPROT;
|
|
if (mem->flags & MAP_ATTRIB) {
|
|
/* dev_dbg(&sock->dev, "requesting attribute memory for "
|
|
"socket %i\n", socket->number);*/
|
|
i |= I365_MEM_REG;
|
|
} else {
|
|
/* dev_dbg(&sock->dev, "requesting normal memory for "
|
|
"socket %i\n", socket->number);*/
|
|
}
|
|
indirect_write16(socket, base + I365_W_OFF, i);
|
|
|
|
/* Enable the window if necessary */
|
|
if (mem->flags & MAP_ACTIVE)
|
|
indirect_setbit(socket, I365_ADDRWIN, I365_ENA_MEM(map));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pd6729_init(struct pcmcia_socket *sock)
|
|
{
|
|
int i;
|
|
struct resource res = { .end = 0x0fff };
|
|
pccard_io_map io = { 0, 0, 0, 0, 1 };
|
|
pccard_mem_map mem = { .res = &res, };
|
|
|
|
pd6729_set_socket(sock, &dead_socket);
|
|
for (i = 0; i < 2; i++) {
|
|
io.map = i;
|
|
pd6729_set_io_map(sock, &io);
|
|
}
|
|
for (i = 0; i < 5; i++) {
|
|
mem.map = i;
|
|
pd6729_set_mem_map(sock, &mem);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* the pccard structure and its functions */
|
|
static struct pccard_operations pd6729_operations = {
|
|
.init = pd6729_init,
|
|
.get_status = pd6729_get_status,
|
|
.set_socket = pd6729_set_socket,
|
|
.set_io_map = pd6729_set_io_map,
|
|
.set_mem_map = pd6729_set_mem_map,
|
|
};
|
|
|
|
static irqreturn_t pd6729_test(int irq, void *dev)
|
|
{
|
|
pr_devel("-> hit on irq %d\n", irq);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int pd6729_check_irq(int irq)
|
|
{
|
|
int ret;
|
|
|
|
ret = request_irq(irq, pd6729_test, IRQF_PROBE_SHARED, "x",
|
|
pd6729_test);
|
|
if (ret)
|
|
return -1;
|
|
|
|
free_irq(irq, pd6729_test);
|
|
return 0;
|
|
}
|
|
|
|
static u_int pd6729_isa_scan(void)
|
|
{
|
|
u_int mask0, mask = 0;
|
|
int i;
|
|
|
|
if (irq_mode == 1) {
|
|
printk(KERN_INFO "pd6729: PCI card interrupts, "
|
|
"PCI status changes\n");
|
|
return 0;
|
|
}
|
|
|
|
mask0 = PD67_MASK;
|
|
|
|
/* just find interrupts that aren't in use */
|
|
for (i = 0; i < 16; i++)
|
|
if ((mask0 & (1 << i)) && (pd6729_check_irq(i) == 0))
|
|
mask |= (1 << i);
|
|
|
|
printk(KERN_INFO "pd6729: ISA irqs = ");
|
|
for (i = 0; i < 16; i++)
|
|
if (mask & (1<<i))
|
|
printk("%s%d", ((mask & ((1<<i)-1)) ? "," : ""), i);
|
|
|
|
if (mask == 0)
|
|
printk("none!");
|
|
else
|
|
printk(" polling status changes.\n");
|
|
|
|
return mask;
|
|
}
|
|
|
|
static int pd6729_pci_probe(struct pci_dev *dev,
|
|
const struct pci_device_id *id)
|
|
{
|
|
int i, j, ret;
|
|
u_int mask;
|
|
char configbyte;
|
|
struct pd6729_socket *socket;
|
|
|
|
socket = kcalloc(MAX_SOCKETS, sizeof(struct pd6729_socket),
|
|
GFP_KERNEL);
|
|
if (!socket) {
|
|
dev_warn(&dev->dev, "failed to kzalloc socket.\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ret = pci_enable_device(dev);
|
|
if (ret) {
|
|
dev_warn(&dev->dev, "failed to enable pci_device.\n");
|
|
goto err_out_free_mem;
|
|
}
|
|
|
|
if (!pci_resource_start(dev, 0)) {
|
|
dev_warn(&dev->dev, "refusing to load the driver as the "
|
|
"io_base is NULL.\n");
|
|
ret = -ENOMEM;
|
|
goto err_out_disable;
|
|
}
|
|
|
|
dev_info(&dev->dev, "Cirrus PD6729 PCI to PCMCIA Bridge at 0x%llx "
|
|
"on irq %d\n",
|
|
(unsigned long long)pci_resource_start(dev, 0), dev->irq);
|
|
/*
|
|
* Since we have no memory BARs some firmware may not
|
|
* have had PCI_COMMAND_MEMORY enabled, yet the device needs it.
|
|
*/
|
|
pci_read_config_byte(dev, PCI_COMMAND, &configbyte);
|
|
if (!(configbyte & PCI_COMMAND_MEMORY)) {
|
|
dev_dbg(&dev->dev, "pd6729: Enabling PCI_COMMAND_MEMORY.\n");
|
|
configbyte |= PCI_COMMAND_MEMORY;
|
|
pci_write_config_byte(dev, PCI_COMMAND, configbyte);
|
|
}
|
|
|
|
ret = pci_request_regions(dev, "pd6729");
|
|
if (ret) {
|
|
dev_warn(&dev->dev, "pci request region failed.\n");
|
|
goto err_out_disable;
|
|
}
|
|
|
|
if (dev->irq == NO_IRQ)
|
|
irq_mode = 0; /* fall back to ISA interrupt mode */
|
|
|
|
mask = pd6729_isa_scan();
|
|
if (irq_mode == 0 && mask == 0) {
|
|
dev_warn(&dev->dev, "no ISA interrupt is available.\n");
|
|
ret = -ENODEV;
|
|
goto err_out_free_res;
|
|
}
|
|
|
|
for (i = 0; i < MAX_SOCKETS; i++) {
|
|
socket[i].io_base = pci_resource_start(dev, 0);
|
|
socket[i].socket.features |= SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
|
|
socket[i].socket.map_size = 0x1000;
|
|
socket[i].socket.irq_mask = mask;
|
|
socket[i].socket.pci_irq = dev->irq;
|
|
socket[i].socket.cb_dev = dev;
|
|
socket[i].socket.owner = THIS_MODULE;
|
|
|
|
socket[i].number = i;
|
|
|
|
socket[i].socket.ops = &pd6729_operations;
|
|
socket[i].socket.resource_ops = &pccard_nonstatic_ops;
|
|
socket[i].socket.dev.parent = &dev->dev;
|
|
socket[i].socket.driver_data = &socket[i];
|
|
}
|
|
|
|
pci_set_drvdata(dev, socket);
|
|
if (irq_mode == 1) {
|
|
/* Register the interrupt handler */
|
|
ret = request_irq(dev->irq, pd6729_interrupt, IRQF_SHARED,
|
|
"pd6729", socket);
|
|
if (ret) {
|
|
dev_err(&dev->dev, "Failed to register irq %d\n",
|
|
dev->irq);
|
|
goto err_out_free_res;
|
|
}
|
|
} else {
|
|
/* poll Card status change */
|
|
timer_setup(&socket->poll_timer, pd6729_interrupt_wrapper, 0);
|
|
mod_timer(&socket->poll_timer, jiffies + HZ);
|
|
}
|
|
|
|
for (i = 0; i < MAX_SOCKETS; i++) {
|
|
ret = pcmcia_register_socket(&socket[i].socket);
|
|
if (ret) {
|
|
dev_warn(&dev->dev, "pcmcia_register_socket failed.\n");
|
|
for (j = 0; j < i ; j++)
|
|
pcmcia_unregister_socket(&socket[j].socket);
|
|
goto err_out_free_res2;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_out_free_res2:
|
|
if (irq_mode == 1)
|
|
free_irq(dev->irq, socket);
|
|
else
|
|
del_timer_sync(&socket->poll_timer);
|
|
err_out_free_res:
|
|
pci_release_regions(dev);
|
|
err_out_disable:
|
|
pci_disable_device(dev);
|
|
|
|
err_out_free_mem:
|
|
kfree(socket);
|
|
return ret;
|
|
}
|
|
|
|
static void pd6729_pci_remove(struct pci_dev *dev)
|
|
{
|
|
int i;
|
|
struct pd6729_socket *socket = pci_get_drvdata(dev);
|
|
|
|
for (i = 0; i < MAX_SOCKETS; i++) {
|
|
/* Turn off all interrupt sources */
|
|
indirect_write(&socket[i], I365_CSCINT, 0);
|
|
indirect_write(&socket[i], I365_INTCTL, 0);
|
|
|
|
pcmcia_unregister_socket(&socket[i].socket);
|
|
}
|
|
|
|
if (irq_mode == 1)
|
|
free_irq(dev->irq, socket);
|
|
else
|
|
del_timer_sync(&socket->poll_timer);
|
|
pci_release_regions(dev);
|
|
pci_disable_device(dev);
|
|
|
|
kfree(socket);
|
|
}
|
|
|
|
static const struct pci_device_id pd6729_pci_ids[] = {
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_6729) },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, pd6729_pci_ids);
|
|
|
|
static struct pci_driver pd6729_pci_driver = {
|
|
.name = "pd6729",
|
|
.id_table = pd6729_pci_ids,
|
|
.probe = pd6729_pci_probe,
|
|
.remove = pd6729_pci_remove,
|
|
};
|
|
|
|
module_pci_driver(pd6729_pci_driver);
|