mirror of
https://github.com/adulau/aha.git
synced 2024-12-27 19:26:25 +00:00
81e56ded87
- static functions in .c files shouldn't be marked inline - make needlessly global code static - remove the unused aic94xx_seq.c:asd_unpause_lseq() - #if 0 other unused code [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
331 lines
11 KiB
C
331 lines
11 KiB
C
/*
|
|
* Aic94xx SAS/SATA driver register access.
|
|
*
|
|
* Copyright (C) 2005 Adaptec, Inc. All rights reserved.
|
|
* Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
|
|
*
|
|
* This file is licensed under GPLv2.
|
|
*
|
|
* This file is part of the aic94xx driver.
|
|
*
|
|
* The aic94xx driver 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; version 2 of the
|
|
* License.
|
|
*
|
|
* The aic94xx driver 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 the aic94xx driver; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*/
|
|
|
|
#include <linux/pci.h>
|
|
#include "aic94xx_reg.h"
|
|
#include "aic94xx.h"
|
|
|
|
/* Writing to device address space.
|
|
* Offset comes before value to remind that the operation of
|
|
* this function is *offs = val.
|
|
*/
|
|
static void asd_write_byte(struct asd_ha_struct *asd_ha,
|
|
unsigned long offs, u8 val)
|
|
{
|
|
if (unlikely(asd_ha->iospace))
|
|
outb(val,
|
|
(unsigned long)asd_ha->io_handle[0].addr + (offs & 0xFF));
|
|
else
|
|
writeb(val, asd_ha->io_handle[0].addr + offs);
|
|
wmb();
|
|
}
|
|
|
|
static void asd_write_word(struct asd_ha_struct *asd_ha,
|
|
unsigned long offs, u16 val)
|
|
{
|
|
if (unlikely(asd_ha->iospace))
|
|
outw(val,
|
|
(unsigned long)asd_ha->io_handle[0].addr + (offs & 0xFF));
|
|
else
|
|
writew(val, asd_ha->io_handle[0].addr + offs);
|
|
wmb();
|
|
}
|
|
|
|
static void asd_write_dword(struct asd_ha_struct *asd_ha,
|
|
unsigned long offs, u32 val)
|
|
{
|
|
if (unlikely(asd_ha->iospace))
|
|
outl(val,
|
|
(unsigned long)asd_ha->io_handle[0].addr + (offs & 0xFF));
|
|
else
|
|
writel(val, asd_ha->io_handle[0].addr + offs);
|
|
wmb();
|
|
}
|
|
|
|
/* Reading from device address space.
|
|
*/
|
|
static u8 asd_read_byte(struct asd_ha_struct *asd_ha, unsigned long offs)
|
|
{
|
|
u8 val;
|
|
if (unlikely(asd_ha->iospace))
|
|
val = inb((unsigned long) asd_ha->io_handle[0].addr
|
|
+ (offs & 0xFF));
|
|
else
|
|
val = readb(asd_ha->io_handle[0].addr + offs);
|
|
rmb();
|
|
return val;
|
|
}
|
|
|
|
static u16 asd_read_word(struct asd_ha_struct *asd_ha,
|
|
unsigned long offs)
|
|
{
|
|
u16 val;
|
|
if (unlikely(asd_ha->iospace))
|
|
val = inw((unsigned long)asd_ha->io_handle[0].addr
|
|
+ (offs & 0xFF));
|
|
else
|
|
val = readw(asd_ha->io_handle[0].addr + offs);
|
|
rmb();
|
|
return val;
|
|
}
|
|
|
|
static u32 asd_read_dword(struct asd_ha_struct *asd_ha,
|
|
unsigned long offs)
|
|
{
|
|
u32 val;
|
|
if (unlikely(asd_ha->iospace))
|
|
val = inl((unsigned long) asd_ha->io_handle[0].addr
|
|
+ (offs & 0xFF));
|
|
else
|
|
val = readl(asd_ha->io_handle[0].addr + offs);
|
|
rmb();
|
|
return val;
|
|
}
|
|
|
|
static inline u32 asd_mem_offs_swa(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline u32 asd_mem_offs_swc(void)
|
|
{
|
|
return asd_mem_offs_swa() + MBAR0_SWA_SIZE;
|
|
}
|
|
|
|
static inline u32 asd_mem_offs_swb(void)
|
|
{
|
|
return asd_mem_offs_swc() + MBAR0_SWC_SIZE + 0x20;
|
|
}
|
|
|
|
/* We know that the register wanted is in the range
|
|
* of the sliding window.
|
|
*/
|
|
#define ASD_READ_SW(ww, type, ord) \
|
|
static type asd_read_##ww##_##ord(struct asd_ha_struct *asd_ha, \
|
|
u32 reg) \
|
|
{ \
|
|
struct asd_ha_addrspace *io_handle = &asd_ha->io_handle[0]; \
|
|
u32 map_offs = (reg - io_handle->ww##_base) + asd_mem_offs_##ww();\
|
|
return asd_read_##ord(asd_ha, (unsigned long)map_offs); \
|
|
}
|
|
|
|
#define ASD_WRITE_SW(ww, type, ord) \
|
|
static void asd_write_##ww##_##ord(struct asd_ha_struct *asd_ha, \
|
|
u32 reg, type val) \
|
|
{ \
|
|
struct asd_ha_addrspace *io_handle = &asd_ha->io_handle[0]; \
|
|
u32 map_offs = (reg - io_handle->ww##_base) + asd_mem_offs_##ww();\
|
|
asd_write_##ord(asd_ha, (unsigned long)map_offs, val); \
|
|
}
|
|
|
|
ASD_READ_SW(swa, u8, byte);
|
|
ASD_READ_SW(swa, u16, word);
|
|
ASD_READ_SW(swa, u32, dword);
|
|
|
|
ASD_READ_SW(swb, u8, byte);
|
|
ASD_READ_SW(swb, u16, word);
|
|
ASD_READ_SW(swb, u32, dword);
|
|
|
|
ASD_READ_SW(swc, u8, byte);
|
|
ASD_READ_SW(swc, u16, word);
|
|
ASD_READ_SW(swc, u32, dword);
|
|
|
|
ASD_WRITE_SW(swa, u8, byte);
|
|
ASD_WRITE_SW(swa, u16, word);
|
|
ASD_WRITE_SW(swa, u32, dword);
|
|
|
|
ASD_WRITE_SW(swb, u8, byte);
|
|
ASD_WRITE_SW(swb, u16, word);
|
|
ASD_WRITE_SW(swb, u32, dword);
|
|
|
|
ASD_WRITE_SW(swc, u8, byte);
|
|
ASD_WRITE_SW(swc, u16, word);
|
|
ASD_WRITE_SW(swc, u32, dword);
|
|
|
|
/*
|
|
* A word about sliding windows:
|
|
* MBAR0 is divided into sliding windows A, C and B, in that order.
|
|
* SWA starts at offset 0 of MBAR0, up to 0x57, with size 0x58 bytes.
|
|
* SWC starts at offset 0x58 of MBAR0, up to 0x60, with size 0x8 bytes.
|
|
* From 0x60 to 0x7F, we have a copy of PCI config space 0x60-0x7F.
|
|
* SWB starts at offset 0x80 of MBAR0 and extends to the end of MBAR0.
|
|
* See asd_init_sw() in aic94xx_hwi.c
|
|
*
|
|
* We map the most common registers we'd access of the internal 4GB
|
|
* host adapter memory space. If a register/internal memory location
|
|
* is wanted which is not mapped, we slide SWB, by paging it,
|
|
* see asd_move_swb() in aic94xx_reg.c.
|
|
*/
|
|
|
|
/**
|
|
* asd_move_swb -- move sliding window B
|
|
* @asd_ha: pointer to host adapter structure
|
|
* @reg: register desired to be within range of the new window
|
|
*/
|
|
static void asd_move_swb(struct asd_ha_struct *asd_ha, u32 reg)
|
|
{
|
|
u32 base = reg & ~(MBAR0_SWB_SIZE-1);
|
|
pci_write_config_dword(asd_ha->pcidev, PCI_CONF_MBAR0_SWB, base);
|
|
asd_ha->io_handle[0].swb_base = base;
|
|
}
|
|
|
|
static void __asd_write_reg_byte(struct asd_ha_struct *asd_ha, u32 reg, u8 val)
|
|
{
|
|
struct asd_ha_addrspace *io_handle=&asd_ha->io_handle[0];
|
|
BUG_ON(reg >= 0xC0000000 || reg < ALL_BASE_ADDR);
|
|
if (io_handle->swa_base <= reg
|
|
&& reg < io_handle->swa_base + MBAR0_SWA_SIZE)
|
|
asd_write_swa_byte (asd_ha, reg,val);
|
|
else if (io_handle->swb_base <= reg
|
|
&& reg < io_handle->swb_base + MBAR0_SWB_SIZE)
|
|
asd_write_swb_byte (asd_ha, reg, val);
|
|
else if (io_handle->swc_base <= reg
|
|
&& reg < io_handle->swc_base + MBAR0_SWC_SIZE)
|
|
asd_write_swc_byte (asd_ha, reg, val);
|
|
else {
|
|
/* Ok, we have to move SWB */
|
|
asd_move_swb(asd_ha, reg);
|
|
asd_write_swb_byte (asd_ha, reg, val);
|
|
}
|
|
}
|
|
|
|
#define ASD_WRITE_REG(type, ord) \
|
|
void asd_write_reg_##ord (struct asd_ha_struct *asd_ha, u32 reg, type val)\
|
|
{ \
|
|
struct asd_ha_addrspace *io_handle=&asd_ha->io_handle[0]; \
|
|
unsigned long flags; \
|
|
BUG_ON(reg >= 0xC0000000 || reg < ALL_BASE_ADDR); \
|
|
spin_lock_irqsave(&asd_ha->iolock, flags); \
|
|
if (io_handle->swa_base <= reg \
|
|
&& reg < io_handle->swa_base + MBAR0_SWA_SIZE) \
|
|
asd_write_swa_##ord (asd_ha, reg,val); \
|
|
else if (io_handle->swb_base <= reg \
|
|
&& reg < io_handle->swb_base + MBAR0_SWB_SIZE) \
|
|
asd_write_swb_##ord (asd_ha, reg, val); \
|
|
else if (io_handle->swc_base <= reg \
|
|
&& reg < io_handle->swc_base + MBAR0_SWC_SIZE) \
|
|
asd_write_swc_##ord (asd_ha, reg, val); \
|
|
else { \
|
|
/* Ok, we have to move SWB */ \
|
|
asd_move_swb(asd_ha, reg); \
|
|
asd_write_swb_##ord (asd_ha, reg, val); \
|
|
} \
|
|
spin_unlock_irqrestore(&asd_ha->iolock, flags); \
|
|
}
|
|
|
|
ASD_WRITE_REG(u8, byte);
|
|
ASD_WRITE_REG(u16,word);
|
|
ASD_WRITE_REG(u32,dword);
|
|
|
|
static u8 __asd_read_reg_byte(struct asd_ha_struct *asd_ha, u32 reg)
|
|
{
|
|
struct asd_ha_addrspace *io_handle=&asd_ha->io_handle[0];
|
|
u8 val;
|
|
BUG_ON(reg >= 0xC0000000 || reg < ALL_BASE_ADDR);
|
|
if (io_handle->swa_base <= reg
|
|
&& reg < io_handle->swa_base + MBAR0_SWA_SIZE)
|
|
val = asd_read_swa_byte (asd_ha, reg);
|
|
else if (io_handle->swb_base <= reg
|
|
&& reg < io_handle->swb_base + MBAR0_SWB_SIZE)
|
|
val = asd_read_swb_byte (asd_ha, reg);
|
|
else if (io_handle->swc_base <= reg
|
|
&& reg < io_handle->swc_base + MBAR0_SWC_SIZE)
|
|
val = asd_read_swc_byte (asd_ha, reg);
|
|
else {
|
|
/* Ok, we have to move SWB */
|
|
asd_move_swb(asd_ha, reg);
|
|
val = asd_read_swb_byte (asd_ha, reg);
|
|
}
|
|
return val;
|
|
}
|
|
|
|
#define ASD_READ_REG(type, ord) \
|
|
type asd_read_reg_##ord (struct asd_ha_struct *asd_ha, u32 reg) \
|
|
{ \
|
|
struct asd_ha_addrspace *io_handle=&asd_ha->io_handle[0]; \
|
|
type val; \
|
|
unsigned long flags; \
|
|
BUG_ON(reg >= 0xC0000000 || reg < ALL_BASE_ADDR); \
|
|
spin_lock_irqsave(&asd_ha->iolock, flags); \
|
|
if (io_handle->swa_base <= reg \
|
|
&& reg < io_handle->swa_base + MBAR0_SWA_SIZE) \
|
|
val = asd_read_swa_##ord (asd_ha, reg); \
|
|
else if (io_handle->swb_base <= reg \
|
|
&& reg < io_handle->swb_base + MBAR0_SWB_SIZE) \
|
|
val = asd_read_swb_##ord (asd_ha, reg); \
|
|
else if (io_handle->swc_base <= reg \
|
|
&& reg < io_handle->swc_base + MBAR0_SWC_SIZE) \
|
|
val = asd_read_swc_##ord (asd_ha, reg); \
|
|
else { \
|
|
/* Ok, we have to move SWB */ \
|
|
asd_move_swb(asd_ha, reg); \
|
|
val = asd_read_swb_##ord (asd_ha, reg); \
|
|
} \
|
|
spin_unlock_irqrestore(&asd_ha->iolock, flags); \
|
|
return val; \
|
|
}
|
|
|
|
ASD_READ_REG(u8, byte);
|
|
ASD_READ_REG(u16,word);
|
|
ASD_READ_REG(u32,dword);
|
|
|
|
/**
|
|
* asd_read_reg_string -- read a string of bytes from io space memory
|
|
* @asd_ha: pointer to host adapter structure
|
|
* @dst: pointer to a destination buffer where data will be written to
|
|
* @offs: start offset (register) to read from
|
|
* @count: number of bytes to read
|
|
*/
|
|
void asd_read_reg_string(struct asd_ha_struct *asd_ha, void *dst,
|
|
u32 offs, int count)
|
|
{
|
|
u8 *p = dst;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&asd_ha->iolock, flags);
|
|
for ( ; count > 0; count--, offs++, p++)
|
|
*p = __asd_read_reg_byte(asd_ha, offs);
|
|
spin_unlock_irqrestore(&asd_ha->iolock, flags);
|
|
}
|
|
|
|
/**
|
|
* asd_write_reg_string -- write a string of bytes to io space memory
|
|
* @asd_ha: pointer to host adapter structure
|
|
* @src: pointer to source buffer where data will be read from
|
|
* @offs: start offset (register) to write to
|
|
* @count: number of bytes to write
|
|
*/
|
|
void asd_write_reg_string(struct asd_ha_struct *asd_ha, void *src,
|
|
u32 offs, int count)
|
|
{
|
|
u8 *p = src;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&asd_ha->iolock, flags);
|
|
for ( ; count > 0; count--, offs++, p++)
|
|
__asd_write_reg_byte(asd_ha, offs, *p);
|
|
spin_unlock_irqrestore(&asd_ha->iolock, flags);
|
|
}
|