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745 lines
17 KiB
745 lines
17 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* vrc4171_card.c, NEC VRC4171 Card Controller driver for Socket Services. |
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* |
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* Copyright (C) 2003-2005 Yoichi Yuasa <[email protected]> |
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*/ |
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#include <linux/init.h> |
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#include <linux/ioport.h> |
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#include <linux/interrupt.h> |
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#include <linux/module.h> |
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#include <linux/spinlock.h> |
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#include <linux/types.h> |
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#include <linux/platform_device.h> |
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#include <asm/io.h> |
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#include <pcmcia/ss.h> |
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#include "i82365.h" |
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MODULE_DESCRIPTION("NEC VRC4171 Card Controllers driver for Socket Services"); |
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MODULE_AUTHOR("Yoichi Yuasa <[email protected]>"); |
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MODULE_LICENSE("GPL"); |
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#define CARD_MAX_SLOTS 2 |
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#define CARD_SLOTA 0 |
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#define CARD_SLOTB 1 |
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#define CARD_SLOTB_OFFSET 0x40 |
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#define CARD_MEM_START 0x10000000 |
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#define CARD_MEM_END 0x13ffffff |
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#define CARD_MAX_MEM_OFFSET 0x3ffffff |
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#define CARD_MAX_MEM_SPEED 1000 |
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#define CARD_CONTROLLER_INDEX 0x03e0 |
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#define CARD_CONTROLLER_DATA 0x03e1 |
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/* Power register */ |
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#define VPP_GET_VCC 0x01 |
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#define POWER_ENABLE 0x10 |
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#define CARD_VOLTAGE_SENSE 0x1f |
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#define VCC_3VORXV_CAPABLE 0x00 |
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#define VCC_XV_ONLY 0x01 |
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#define VCC_3V_CAPABLE 0x02 |
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#define VCC_5V_ONLY 0x03 |
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#define CARD_VOLTAGE_SELECT 0x2f |
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#define VCC_3V 0x01 |
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#define VCC_5V 0x00 |
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#define VCC_XV 0x02 |
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#define VCC_STATUS_3V 0x02 |
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#define VCC_STATUS_5V 0x01 |
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#define VCC_STATUS_XV 0x03 |
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#define GLOBAL_CONTROL 0x1e |
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#define EXWRBK 0x04 |
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#define IRQPM_EN 0x08 |
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#define CLRPMIRQ 0x10 |
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#define INTERRUPT_STATUS 0x05fa |
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#define IRQ_A 0x02 |
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#define IRQ_B 0x04 |
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#define CONFIGURATION1 0x05fe |
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#define SLOTB_CONFIG 0xc000 |
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#define SLOTB_NONE 0x0000 |
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#define SLOTB_PCCARD 0x4000 |
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#define SLOTB_CF 0x8000 |
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#define SLOTB_FLASHROM 0xc000 |
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#define CARD_CONTROLLER_START CARD_CONTROLLER_INDEX |
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#define CARD_CONTROLLER_END CARD_CONTROLLER_DATA |
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#define IO_MAX_MAPS 2 |
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#define MEM_MAX_MAPS 5 |
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enum vrc4171_slot { |
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SLOT_PROBE = 0, |
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SLOT_NOPROBE_IO, |
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SLOT_NOPROBE_MEM, |
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SLOT_NOPROBE_ALL, |
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SLOT_INITIALIZED, |
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}; |
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enum vrc4171_slotb { |
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SLOTB_IS_NONE, |
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SLOTB_IS_PCCARD, |
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SLOTB_IS_CF, |
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SLOTB_IS_FLASHROM, |
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}; |
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struct vrc4171_socket { |
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enum vrc4171_slot slot; |
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struct pcmcia_socket pcmcia_socket; |
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char name[24]; |
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int csc_irq; |
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int io_irq; |
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spinlock_t lock; |
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}; |
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static struct vrc4171_socket vrc4171_sockets[CARD_MAX_SLOTS]; |
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static enum vrc4171_slotb vrc4171_slotb = SLOTB_IS_NONE; |
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static char vrc4171_card_name[] = "NEC VRC4171 Card Controller"; |
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static unsigned int vrc4171_irq; |
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static uint16_t vrc4171_irq_mask = 0xdeb8; |
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static struct resource vrc4171_card_resource[3] = { |
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{ .name = vrc4171_card_name, |
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.start = CARD_CONTROLLER_START, |
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.end = CARD_CONTROLLER_END, |
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.flags = IORESOURCE_IO, }, |
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{ .name = vrc4171_card_name, |
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.start = INTERRUPT_STATUS, |
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.end = INTERRUPT_STATUS, |
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.flags = IORESOURCE_IO, }, |
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{ .name = vrc4171_card_name, |
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.start = CONFIGURATION1, |
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.end = CONFIGURATION1, |
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.flags = IORESOURCE_IO, }, |
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}; |
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static struct platform_device vrc4171_card_device = { |
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.name = vrc4171_card_name, |
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.id = 0, |
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.num_resources = 3, |
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.resource = vrc4171_card_resource, |
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}; |
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static inline uint16_t vrc4171_get_irq_status(void) |
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{ |
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return inw(INTERRUPT_STATUS); |
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} |
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static inline void vrc4171_set_multifunction_pin(enum vrc4171_slotb config) |
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{ |
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uint16_t config1; |
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config1 = inw(CONFIGURATION1); |
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config1 &= ~SLOTB_CONFIG; |
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switch (config) { |
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case SLOTB_IS_NONE: |
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config1 |= SLOTB_NONE; |
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break; |
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case SLOTB_IS_PCCARD: |
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config1 |= SLOTB_PCCARD; |
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break; |
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case SLOTB_IS_CF: |
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config1 |= SLOTB_CF; |
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break; |
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case SLOTB_IS_FLASHROM: |
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config1 |= SLOTB_FLASHROM; |
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break; |
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default: |
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break; |
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} |
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outw(config1, CONFIGURATION1); |
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} |
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static inline uint8_t exca_read_byte(int slot, uint8_t index) |
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{ |
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if (slot == CARD_SLOTB) |
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index += CARD_SLOTB_OFFSET; |
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outb(index, CARD_CONTROLLER_INDEX); |
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return inb(CARD_CONTROLLER_DATA); |
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} |
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static inline uint16_t exca_read_word(int slot, uint8_t index) |
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{ |
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uint16_t data; |
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if (slot == CARD_SLOTB) |
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index += CARD_SLOTB_OFFSET; |
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outb(index++, CARD_CONTROLLER_INDEX); |
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data = inb(CARD_CONTROLLER_DATA); |
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outb(index, CARD_CONTROLLER_INDEX); |
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data |= ((uint16_t)inb(CARD_CONTROLLER_DATA)) << 8; |
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return data; |
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} |
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static inline uint8_t exca_write_byte(int slot, uint8_t index, uint8_t data) |
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{ |
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if (slot == CARD_SLOTB) |
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index += CARD_SLOTB_OFFSET; |
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outb(index, CARD_CONTROLLER_INDEX); |
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outb(data, CARD_CONTROLLER_DATA); |
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return data; |
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} |
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static inline uint16_t exca_write_word(int slot, uint8_t index, uint16_t data) |
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{ |
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if (slot == CARD_SLOTB) |
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index += CARD_SLOTB_OFFSET; |
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outb(index++, CARD_CONTROLLER_INDEX); |
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outb(data, CARD_CONTROLLER_DATA); |
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outb(index, CARD_CONTROLLER_INDEX); |
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outb((uint8_t)(data >> 8), CARD_CONTROLLER_DATA); |
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return data; |
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} |
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static inline int search_nonuse_irq(void) |
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{ |
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int i; |
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for (i = 0; i < 16; i++) { |
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if (vrc4171_irq_mask & (1 << i)) { |
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vrc4171_irq_mask &= ~(1 << i); |
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return i; |
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} |
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} |
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return -1; |
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} |
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static int pccard_init(struct pcmcia_socket *sock) |
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{ |
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struct vrc4171_socket *socket; |
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unsigned int slot; |
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sock->features |= SS_CAP_PCCARD | SS_CAP_PAGE_REGS; |
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sock->irq_mask = 0; |
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sock->map_size = 0x1000; |
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sock->pci_irq = vrc4171_irq; |
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slot = sock->sock; |
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socket = &vrc4171_sockets[slot]; |
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socket->csc_irq = search_nonuse_irq(); |
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socket->io_irq = search_nonuse_irq(); |
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spin_lock_init(&socket->lock); |
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return 0; |
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} |
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static int pccard_get_status(struct pcmcia_socket *sock, u_int *value) |
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{ |
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unsigned int slot; |
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uint8_t status, sense; |
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u_int val = 0; |
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if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || value == NULL) |
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return -EINVAL; |
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slot = sock->sock; |
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status = exca_read_byte(slot, I365_STATUS); |
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if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) { |
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if (status & I365_CS_STSCHG) |
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val |= SS_STSCHG; |
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} else { |
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if (!(status & I365_CS_BVD1)) |
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val |= SS_BATDEAD; |
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else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1) |
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val |= SS_BATWARN; |
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} |
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if ((status & I365_CS_DETECT) == I365_CS_DETECT) |
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val |= SS_DETECT; |
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if (status & I365_CS_WRPROT) |
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val |= SS_WRPROT; |
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if (status & I365_CS_READY) |
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val |= SS_READY; |
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if (status & I365_CS_POWERON) |
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val |= SS_POWERON; |
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sense = exca_read_byte(slot, CARD_VOLTAGE_SENSE); |
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switch (sense) { |
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case VCC_3VORXV_CAPABLE: |
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val |= SS_3VCARD | SS_XVCARD; |
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break; |
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case VCC_XV_ONLY: |
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val |= SS_XVCARD; |
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break; |
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case VCC_3V_CAPABLE: |
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val |= SS_3VCARD; |
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break; |
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default: |
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/* 5V only */ |
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break; |
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} |
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*value = val; |
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return 0; |
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} |
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static inline uint8_t set_Vcc_value(u_char Vcc) |
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{ |
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switch (Vcc) { |
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case 33: |
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return VCC_3V; |
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case 50: |
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return VCC_5V; |
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} |
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/* Small voltage is chosen for safety. */ |
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return VCC_3V; |
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} |
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static int pccard_set_socket(struct pcmcia_socket *sock, socket_state_t *state) |
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{ |
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struct vrc4171_socket *socket; |
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unsigned int slot; |
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uint8_t voltage, power, control, cscint; |
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if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || |
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(state->Vpp != state->Vcc && state->Vpp != 0) || |
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(state->Vcc != 50 && state->Vcc != 33 && state->Vcc != 0)) |
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return -EINVAL; |
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slot = sock->sock; |
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socket = &vrc4171_sockets[slot]; |
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spin_lock_irq(&socket->lock); |
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voltage = set_Vcc_value(state->Vcc); |
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exca_write_byte(slot, CARD_VOLTAGE_SELECT, voltage); |
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power = POWER_ENABLE; |
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if (state->Vpp == state->Vcc) |
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power |= VPP_GET_VCC; |
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if (state->flags & SS_OUTPUT_ENA) |
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power |= I365_PWR_OUT; |
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exca_write_byte(slot, I365_POWER, power); |
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control = 0; |
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if (state->io_irq != 0) |
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control |= socket->io_irq; |
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if (state->flags & SS_IOCARD) |
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control |= I365_PC_IOCARD; |
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if (state->flags & SS_RESET) |
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control &= ~I365_PC_RESET; |
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else |
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control |= I365_PC_RESET; |
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exca_write_byte(slot, I365_INTCTL, control); |
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cscint = 0; |
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exca_write_byte(slot, I365_CSCINT, cscint); |
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exca_read_byte(slot, I365_CSC); /* clear CardStatus change */ |
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if (state->csc_mask != 0) |
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cscint |= socket->csc_irq << 8; |
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if (state->flags & SS_IOCARD) { |
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if (state->csc_mask & SS_STSCHG) |
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cscint |= I365_CSC_STSCHG; |
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} else { |
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if (state->csc_mask & SS_BATDEAD) |
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cscint |= I365_CSC_BVD1; |
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if (state->csc_mask & SS_BATWARN) |
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cscint |= I365_CSC_BVD2; |
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} |
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if (state->csc_mask & SS_READY) |
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cscint |= I365_CSC_READY; |
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if (state->csc_mask & SS_DETECT) |
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cscint |= I365_CSC_DETECT; |
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exca_write_byte(slot, I365_CSCINT, cscint); |
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spin_unlock_irq(&socket->lock); |
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return 0; |
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} |
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static int pccard_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io) |
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{ |
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unsigned int slot; |
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uint8_t ioctl, addrwin; |
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u_char map; |
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if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || |
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io == NULL || io->map >= IO_MAX_MAPS || |
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io->start > 0xffff || io->stop > 0xffff || io->start > io->stop) |
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return -EINVAL; |
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slot = sock->sock; |
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map = io->map; |
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addrwin = exca_read_byte(slot, I365_ADDRWIN); |
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if (addrwin & I365_ENA_IO(map)) { |
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addrwin &= ~I365_ENA_IO(map); |
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exca_write_byte(slot, I365_ADDRWIN, addrwin); |
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} |
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exca_write_word(slot, I365_IO(map)+I365_W_START, io->start); |
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exca_write_word(slot, I365_IO(map)+I365_W_STOP, io->stop); |
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ioctl = 0; |
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if (io->speed > 0) |
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ioctl |= I365_IOCTL_WAIT(map); |
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if (io->flags & MAP_16BIT) |
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ioctl |= I365_IOCTL_16BIT(map); |
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if (io->flags & MAP_AUTOSZ) |
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ioctl |= I365_IOCTL_IOCS16(map); |
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if (io->flags & MAP_0WS) |
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ioctl |= I365_IOCTL_0WS(map); |
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exca_write_byte(slot, I365_IOCTL, ioctl); |
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if (io->flags & MAP_ACTIVE) { |
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addrwin |= I365_ENA_IO(map); |
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exca_write_byte(slot, I365_ADDRWIN, addrwin); |
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} |
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return 0; |
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} |
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static int pccard_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem) |
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{ |
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unsigned int slot; |
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uint16_t start, stop, offset; |
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uint8_t addrwin; |
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u_char map; |
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if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || |
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mem == NULL || mem->map >= MEM_MAX_MAPS || |
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mem->res->start < CARD_MEM_START || mem->res->start > CARD_MEM_END || |
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mem->res->end < CARD_MEM_START || mem->res->end > CARD_MEM_END || |
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mem->res->start > mem->res->end || |
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mem->card_start > CARD_MAX_MEM_OFFSET || |
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mem->speed > CARD_MAX_MEM_SPEED) |
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return -EINVAL; |
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slot = sock->sock; |
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map = mem->map; |
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addrwin = exca_read_byte(slot, I365_ADDRWIN); |
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if (addrwin & I365_ENA_MEM(map)) { |
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addrwin &= ~I365_ENA_MEM(map); |
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exca_write_byte(slot, I365_ADDRWIN, addrwin); |
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} |
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start = (mem->res->start >> 12) & 0x3fff; |
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if (mem->flags & MAP_16BIT) |
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start |= I365_MEM_16BIT; |
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exca_write_word(slot, I365_MEM(map)+I365_W_START, start); |
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stop = (mem->res->end >> 12) & 0x3fff; |
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switch (mem->speed) { |
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case 0: |
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break; |
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case 1: |
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stop |= I365_MEM_WS0; |
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break; |
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case 2: |
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stop |= I365_MEM_WS1; |
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break; |
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default: |
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stop |= I365_MEM_WS0 | I365_MEM_WS1; |
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break; |
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} |
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exca_write_word(slot, I365_MEM(map)+I365_W_STOP, stop); |
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offset = (mem->card_start >> 12) & 0x3fff; |
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if (mem->flags & MAP_ATTRIB) |
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offset |= I365_MEM_REG; |
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if (mem->flags & MAP_WRPROT) |
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offset |= I365_MEM_WRPROT; |
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exca_write_word(slot, I365_MEM(map)+I365_W_OFF, offset); |
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if (mem->flags & MAP_ACTIVE) { |
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addrwin |= I365_ENA_MEM(map); |
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exca_write_byte(slot, I365_ADDRWIN, addrwin); |
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} |
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return 0; |
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} |
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static struct pccard_operations vrc4171_pccard_operations = { |
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.init = pccard_init, |
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.get_status = pccard_get_status, |
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.set_socket = pccard_set_socket, |
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.set_io_map = pccard_set_io_map, |
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.set_mem_map = pccard_set_mem_map, |
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}; |
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static inline unsigned int get_events(int slot) |
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{ |
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unsigned int events = 0; |
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uint8_t status, csc; |
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status = exca_read_byte(slot, I365_STATUS); |
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csc = exca_read_byte(slot, I365_CSC); |
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if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) { |
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if ((csc & I365_CSC_STSCHG) && (status & I365_CS_STSCHG)) |
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events |= SS_STSCHG; |
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} else { |
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if (csc & (I365_CSC_BVD1 | I365_CSC_BVD2)) { |
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if (!(status & I365_CS_BVD1)) |
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events |= SS_BATDEAD; |
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else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1) |
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events |= SS_BATWARN; |
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} |
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} |
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if ((csc & I365_CSC_READY) && (status & I365_CS_READY)) |
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events |= SS_READY; |
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if ((csc & I365_CSC_DETECT) && ((status & I365_CS_DETECT) == I365_CS_DETECT)) |
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events |= SS_DETECT; |
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return events; |
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} |
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static irqreturn_t pccard_interrupt(int irq, void *dev_id) |
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{ |
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struct vrc4171_socket *socket; |
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unsigned int events; |
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irqreturn_t retval = IRQ_NONE; |
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uint16_t status; |
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status = vrc4171_get_irq_status(); |
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if (status & IRQ_A) { |
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socket = &vrc4171_sockets[CARD_SLOTA]; |
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if (socket->slot == SLOT_INITIALIZED) { |
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if (status & (1 << socket->csc_irq)) { |
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events = get_events(CARD_SLOTA); |
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if (events != 0) { |
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pcmcia_parse_events(&socket->pcmcia_socket, events); |
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retval = IRQ_HANDLED; |
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} |
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} |
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} |
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} |
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if (status & IRQ_B) { |
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socket = &vrc4171_sockets[CARD_SLOTB]; |
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if (socket->slot == SLOT_INITIALIZED) { |
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if (status & (1 << socket->csc_irq)) { |
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events = get_events(CARD_SLOTB); |
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if (events != 0) { |
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pcmcia_parse_events(&socket->pcmcia_socket, events); |
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retval = IRQ_HANDLED; |
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} |
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} |
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} |
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} |
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return retval; |
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} |
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static inline void reserve_using_irq(int slot) |
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{ |
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unsigned int irq; |
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irq = exca_read_byte(slot, I365_INTCTL); |
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irq &= 0x0f; |
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vrc4171_irq_mask &= ~(1 << irq); |
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irq = exca_read_byte(slot, I365_CSCINT); |
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irq = (irq & 0xf0) >> 4; |
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vrc4171_irq_mask &= ~(1 << irq); |
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} |
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static int vrc4171_add_sockets(void) |
|
{ |
|
struct vrc4171_socket *socket; |
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int slot, retval; |
|
|
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for (slot = 0; slot < CARD_MAX_SLOTS; slot++) { |
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if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE) |
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continue; |
|
|
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socket = &vrc4171_sockets[slot]; |
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if (socket->slot != SLOT_PROBE) { |
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uint8_t addrwin; |
|
|
|
switch (socket->slot) { |
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case SLOT_NOPROBE_MEM: |
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addrwin = exca_read_byte(slot, I365_ADDRWIN); |
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addrwin &= 0x1f; |
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exca_write_byte(slot, I365_ADDRWIN, addrwin); |
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break; |
|
case SLOT_NOPROBE_IO: |
|
addrwin = exca_read_byte(slot, I365_ADDRWIN); |
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addrwin &= 0xc0; |
|
exca_write_byte(slot, I365_ADDRWIN, addrwin); |
|
break; |
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default: |
|
break; |
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} |
|
|
|
reserve_using_irq(slot); |
|
continue; |
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} |
|
|
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sprintf(socket->name, "NEC VRC4171 Card Slot %1c", 'A' + slot); |
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socket->pcmcia_socket.dev.parent = &vrc4171_card_device.dev; |
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socket->pcmcia_socket.ops = &vrc4171_pccard_operations; |
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socket->pcmcia_socket.owner = THIS_MODULE; |
|
|
|
retval = pcmcia_register_socket(&socket->pcmcia_socket); |
|
if (retval < 0) |
|
return retval; |
|
|
|
exca_write_byte(slot, I365_ADDRWIN, 0); |
|
exca_write_byte(slot, GLOBAL_CONTROL, 0); |
|
|
|
socket->slot = SLOT_INITIALIZED; |
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} |
|
|
|
return 0; |
|
} |
|
|
|
static void vrc4171_remove_sockets(void) |
|
{ |
|
struct vrc4171_socket *socket; |
|
int slot; |
|
|
|
for (slot = 0; slot < CARD_MAX_SLOTS; slot++) { |
|
if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE) |
|
continue; |
|
|
|
socket = &vrc4171_sockets[slot]; |
|
if (socket->slot == SLOT_INITIALIZED) |
|
pcmcia_unregister_socket(&socket->pcmcia_socket); |
|
|
|
socket->slot = SLOT_PROBE; |
|
} |
|
} |
|
|
|
static int vrc4171_card_setup(char *options) |
|
{ |
|
if (options == NULL || *options == '\0') |
|
return 1; |
|
|
|
if (strncmp(options, "irq:", 4) == 0) { |
|
int irq; |
|
options += 4; |
|
irq = simple_strtoul(options, &options, 0); |
|
if (irq >= 0 && irq < nr_irqs) |
|
vrc4171_irq = irq; |
|
|
|
if (*options != ',') |
|
return 1; |
|
options++; |
|
} |
|
|
|
if (strncmp(options, "slota:", 6) == 0) { |
|
options += 6; |
|
if (*options != '\0') { |
|
if (strncmp(options, "memnoprobe", 10) == 0) { |
|
vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_MEM; |
|
options += 10; |
|
} else if (strncmp(options, "ionoprobe", 9) == 0) { |
|
vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_IO; |
|
options += 9; |
|
} else if ( strncmp(options, "noprobe", 7) == 0) { |
|
vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_ALL; |
|
options += 7; |
|
} |
|
|
|
if (*options != ',') |
|
return 1; |
|
options++; |
|
} else |
|
return 1; |
|
|
|
} |
|
|
|
if (strncmp(options, "slotb:", 6) == 0) { |
|
options += 6; |
|
if (*options != '\0') { |
|
if (strncmp(options, "pccard", 6) == 0) { |
|
vrc4171_slotb = SLOTB_IS_PCCARD; |
|
options += 6; |
|
} else if (strncmp(options, "cf", 2) == 0) { |
|
vrc4171_slotb = SLOTB_IS_CF; |
|
options += 2; |
|
} else if (strncmp(options, "flashrom", 8) == 0) { |
|
vrc4171_slotb = SLOTB_IS_FLASHROM; |
|
options += 8; |
|
} else if (strncmp(options, "none", 4) == 0) { |
|
vrc4171_slotb = SLOTB_IS_NONE; |
|
options += 4; |
|
} |
|
|
|
if (*options != ',') |
|
return 1; |
|
options++; |
|
|
|
if (strncmp(options, "memnoprobe", 10) == 0) |
|
vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_MEM; |
|
if (strncmp(options, "ionoprobe", 9) == 0) |
|
vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_IO; |
|
if (strncmp(options, "noprobe", 7) == 0) |
|
vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_ALL; |
|
} |
|
} |
|
|
|
return 1; |
|
} |
|
|
|
__setup("vrc4171_card=", vrc4171_card_setup); |
|
|
|
static struct platform_driver vrc4171_card_driver = { |
|
.driver = { |
|
.name = vrc4171_card_name, |
|
}, |
|
}; |
|
|
|
static int vrc4171_card_init(void) |
|
{ |
|
int retval; |
|
|
|
retval = platform_driver_register(&vrc4171_card_driver); |
|
if (retval < 0) |
|
return retval; |
|
|
|
retval = platform_device_register(&vrc4171_card_device); |
|
if (retval < 0) { |
|
platform_driver_unregister(&vrc4171_card_driver); |
|
return retval; |
|
} |
|
|
|
vrc4171_set_multifunction_pin(vrc4171_slotb); |
|
|
|
retval = vrc4171_add_sockets(); |
|
if (retval == 0) |
|
retval = request_irq(vrc4171_irq, pccard_interrupt, IRQF_SHARED, |
|
vrc4171_card_name, vrc4171_sockets); |
|
|
|
if (retval < 0) { |
|
vrc4171_remove_sockets(); |
|
platform_device_unregister(&vrc4171_card_device); |
|
platform_driver_unregister(&vrc4171_card_driver); |
|
return retval; |
|
} |
|
|
|
printk(KERN_INFO "%s, connected to IRQ %d\n", |
|
vrc4171_card_driver.driver.name, vrc4171_irq); |
|
|
|
return 0; |
|
} |
|
|
|
static void vrc4171_card_exit(void) |
|
{ |
|
free_irq(vrc4171_irq, vrc4171_sockets); |
|
vrc4171_remove_sockets(); |
|
platform_device_unregister(&vrc4171_card_device); |
|
platform_driver_unregister(&vrc4171_card_driver); |
|
} |
|
|
|
module_init(vrc4171_card_init); |
|
module_exit(vrc4171_card_exit);
|
|
|