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linux-pinenote/drivers/pcmcia/ti113x.h
Lucas De Marchi 25985edced Fix common misspellings 
Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-31 11:26:23 -03:00

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/*
* ti113x.h 1.16 1999/10/25 20:03:34
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License
* at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and
* limitations under the License.
*
* The initial developer of the original code is David A. Hinds
* <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
* are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU General Public License version 2 (the "GPL"), in which
* case the provisions of the GPL are applicable instead of the
* above. If you wish to allow the use of your version of this file
* only under the terms of the GPL and not to allow others to use
* your version of this file under the MPL, indicate your decision by
* deleting the provisions above and replace them with the notice and
* other provisions required by the GPL. If you do not delete the
* provisions above, a recipient may use your version of this file
* under either the MPL or the GPL.
*/
#ifndef _LINUX_TI113X_H
#define _LINUX_TI113X_H
/* Register definitions for TI 113X PCI-to-CardBus bridges */
/* System Control Register */
#define TI113X_SYSTEM_CONTROL 0x0080 /* 32 bit */
#define TI113X_SCR_SMIROUTE 0x04000000
#define TI113X_SCR_SMISTATUS 0x02000000
#define TI113X_SCR_SMIENB 0x01000000
#define TI113X_SCR_VCCPROT 0x00200000
#define TI113X_SCR_REDUCEZV 0x00100000
#define TI113X_SCR_CDREQEN 0x00080000
#define TI113X_SCR_CDMACHAN 0x00070000
#define TI113X_SCR_SOCACTIVE 0x00002000
#define TI113X_SCR_PWRSTREAM 0x00000800
#define TI113X_SCR_DELAYUP 0x00000400
#define TI113X_SCR_DELAYDOWN 0x00000200
#define TI113X_SCR_INTERROGATE 0x00000100
#define TI113X_SCR_CLKRUN_SEL 0x00000080
#define TI113X_SCR_PWRSAVINGS 0x00000040
#define TI113X_SCR_SUBSYSRW 0x00000020
#define TI113X_SCR_CB_DPAR 0x00000010
#define TI113X_SCR_CDMA_EN 0x00000008
#define TI113X_SCR_ASYNC_IRQ 0x00000004
#define TI113X_SCR_KEEPCLK 0x00000002
#define TI113X_SCR_CLKRUN_ENA 0x00000001
#define TI122X_SCR_SER_STEP 0xc0000000
#define TI122X_SCR_INTRTIE 0x20000000
#define TIXX21_SCR_TIEALL 0x10000000
#define TI122X_SCR_CBRSVD 0x00400000
#define TI122X_SCR_MRBURSTDN 0x00008000
#define TI122X_SCR_MRBURSTUP 0x00004000
#define TI122X_SCR_RIMUX 0x00000001
/* Multimedia Control Register */
#define TI1250_MULTIMEDIA_CTL 0x0084 /* 8 bit */
#define TI1250_MMC_ZVOUTEN 0x80
#define TI1250_MMC_PORTSEL 0x40
#define TI1250_MMC_ZVEN1 0x02
#define TI1250_MMC_ZVEN0 0x01
#define TI1250_GENERAL_STATUS 0x0085 /* 8 bit */
#define TI1250_GPIO0_CONTROL 0x0088 /* 8 bit */
#define TI1250_GPIO1_CONTROL 0x0089 /* 8 bit */
#define TI1250_GPIO2_CONTROL 0x008a /* 8 bit */
#define TI1250_GPIO3_CONTROL 0x008b /* 8 bit */
#define TI1250_GPIO_MODE_MASK 0xc0
/* IRQMUX/MFUNC Register */
#define TI122X_MFUNC 0x008c /* 32 bit */
#define TI122X_MFUNC0_MASK 0x0000000f
#define TI122X_MFUNC1_MASK 0x000000f0
#define TI122X_MFUNC2_MASK 0x00000f00
#define TI122X_MFUNC3_MASK 0x0000f000
#define TI122X_MFUNC4_MASK 0x000f0000
#define TI122X_MFUNC5_MASK 0x00f00000
#define TI122X_MFUNC6_MASK 0x0f000000
#define TI122X_MFUNC0_INTA 0x00000002
#define TI125X_MFUNC0_INTB 0x00000001
#define TI122X_MFUNC1_INTB 0x00000020
#define TI122X_MFUNC3_IRQSER 0x00001000
/* Retry Status Register */
#define TI113X_RETRY_STATUS 0x0090 /* 8 bit */
#define TI113X_RSR_PCIRETRY 0x80
#define TI113X_RSR_CBRETRY 0x40
#define TI113X_RSR_TEXP_CBB 0x20
#define TI113X_RSR_MEXP_CBB 0x10
#define TI113X_RSR_TEXP_CBA 0x08
#define TI113X_RSR_MEXP_CBA 0x04
#define TI113X_RSR_TEXP_PCI 0x02
#define TI113X_RSR_MEXP_PCI 0x01
/* Card Control Register */
#define TI113X_CARD_CONTROL 0x0091 /* 8 bit */
#define TI113X_CCR_RIENB 0x80
#define TI113X_CCR_ZVENABLE 0x40
#define TI113X_CCR_PCI_IRQ_ENA 0x20
#define TI113X_CCR_PCI_IREQ 0x10
#define TI113X_CCR_PCI_CSC 0x08
#define TI113X_CCR_SPKROUTEN 0x02
#define TI113X_CCR_IFG 0x01
#define TI1220_CCR_PORT_SEL 0x20
#define TI122X_CCR_AUD2MUX 0x04
/* Device Control Register */
#define TI113X_DEVICE_CONTROL 0x0092 /* 8 bit */
#define TI113X_DCR_5V_FORCE 0x40
#define TI113X_DCR_3V_FORCE 0x20
#define TI113X_DCR_IMODE_MASK 0x06
#define TI113X_DCR_IMODE_ISA 0x02
#define TI113X_DCR_IMODE_SERIAL 0x04
#define TI12XX_DCR_IMODE_PCI_ONLY 0x00
#define TI12XX_DCR_IMODE_ALL_SERIAL 0x06
/* Buffer Control Register */
#define TI113X_BUFFER_CONTROL 0x0093 /* 8 bit */
#define TI113X_BCR_CB_READ_DEPTH 0x08
#define TI113X_BCR_CB_WRITE_DEPTH 0x04
#define TI113X_BCR_PCI_READ_DEPTH 0x02
#define TI113X_BCR_PCI_WRITE_DEPTH 0x01
/* Diagnostic Register */
#define TI1250_DIAGNOSTIC 0x0093 /* 8 bit */
#define TI1250_DIAG_TRUE_VALUE 0x80
#define TI1250_DIAG_PCI_IREQ 0x40
#define TI1250_DIAG_PCI_CSC 0x20
#define TI1250_DIAG_ASYNC_CSC 0x01
/* DMA Registers */
#define TI113X_DMA_0 0x0094 /* 32 bit */
#define TI113X_DMA_1 0x0098 /* 32 bit */
/* ExCA IO offset registers */
#define TI113X_IO_OFFSET(map) (0x36+((map)<<1))
/* EnE test register */
#define ENE_TEST_C9 0xc9 /* 8bit */
#define ENE_TEST_C9_TLTENABLE 0x02
#define ENE_TEST_C9_PFENABLE_F0 0x04
#define ENE_TEST_C9_PFENABLE_F1 0x08
#define ENE_TEST_C9_PFENABLE (ENE_TEST_C9_PFENABLE_F0 | ENE_TEST_C9_PFENABLE_F1)
#define ENE_TEST_C9_WPDISALBLE_F0 0x40
#define ENE_TEST_C9_WPDISALBLE_F1 0x80
#define ENE_TEST_C9_WPDISALBLE (ENE_TEST_C9_WPDISALBLE_F0 | ENE_TEST_C9_WPDISALBLE_F1)
/*
* Texas Instruments CardBus controller overrides.
*/
#define ti_sysctl(socket) ((socket)->private[0])
#define ti_cardctl(socket) ((socket)->private[1])
#define ti_devctl(socket) ((socket)->private[2])
#define ti_diag(socket) ((socket)->private[3])
#define ti_mfunc(socket) ((socket)->private[4])
#define ene_test_c9(socket) ((socket)->private[5])
/*
* These are the TI specific power management handlers.
*/
static void ti_save_state(struct yenta_socket *socket)
{
ti_sysctl(socket) = config_readl(socket, TI113X_SYSTEM_CONTROL);
ti_mfunc(socket) = config_readl(socket, TI122X_MFUNC);
ti_cardctl(socket) = config_readb(socket, TI113X_CARD_CONTROL);
ti_devctl(socket) = config_readb(socket, TI113X_DEVICE_CONTROL);
ti_diag(socket) = config_readb(socket, TI1250_DIAGNOSTIC);
if (socket->dev->vendor == PCI_VENDOR_ID_ENE)
ene_test_c9(socket) = config_readb(socket, ENE_TEST_C9);
}
static void ti_restore_state(struct yenta_socket *socket)
{
config_writel(socket, TI113X_SYSTEM_CONTROL, ti_sysctl(socket));
config_writel(socket, TI122X_MFUNC, ti_mfunc(socket));
config_writeb(socket, TI113X_CARD_CONTROL, ti_cardctl(socket));
config_writeb(socket, TI113X_DEVICE_CONTROL, ti_devctl(socket));
config_writeb(socket, TI1250_DIAGNOSTIC, ti_diag(socket));
if (socket->dev->vendor == PCI_VENDOR_ID_ENE)
config_writeb(socket, ENE_TEST_C9, ene_test_c9(socket));
}
/*
* Zoom video control for TI122x/113x chips
*/
static void ti_zoom_video(struct pcmcia_socket *sock, int onoff)
{
u8 reg;
struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
/* If we don't have a Zoom Video switch this is harmless,
we just tristate the unused (ZV) lines */
reg = config_readb(socket, TI113X_CARD_CONTROL);
if (onoff)
/* Zoom zoom, we will all go together, zoom zoom, zoom zoom */
reg |= TI113X_CCR_ZVENABLE;
else
reg &= ~TI113X_CCR_ZVENABLE;
config_writeb(socket, TI113X_CARD_CONTROL, reg);
}
/*
* The 145x series can also use this. They have an additional
* ZV autodetect mode we don't use but don't actually need.
* FIXME: manual says its in func0 and func1 but disagrees with
* itself about this - do we need to force func0, if so we need
* to know a lot more about socket pairings in pcmcia_socket than
* we do now.. uggh.
*/
static void ti1250_zoom_video(struct pcmcia_socket *sock, int onoff)
{
struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
int shift = 0;
u8 reg;
ti_zoom_video(sock, onoff);
reg = config_readb(socket, TI1250_MULTIMEDIA_CTL);
reg |= TI1250_MMC_ZVOUTEN; /* ZV bus enable */
if(PCI_FUNC(socket->dev->devfn)==1)
shift = 1;
if(onoff)
{
reg &= ~(1<<6); /* Clear select bit */
reg |= shift<<6; /* Favour our socket */
reg |= 1<<shift; /* Socket zoom video on */
}
else
{
reg &= ~(1<<6); /* Clear select bit */
reg |= (1^shift)<<6; /* Favour other socket */
reg &= ~(1<<shift); /* Socket zoon video off */
}
config_writeb(socket, TI1250_MULTIMEDIA_CTL, reg);
}
static void ti_set_zv(struct yenta_socket *socket)
{
if(socket->dev->vendor == PCI_VENDOR_ID_TI)
{
switch(socket->dev->device)
{
/* There may be more .. */
case PCI_DEVICE_ID_TI_1220:
case PCI_DEVICE_ID_TI_1221:
case PCI_DEVICE_ID_TI_1225:
case PCI_DEVICE_ID_TI_4510:
socket->socket.zoom_video = ti_zoom_video;
break;
case PCI_DEVICE_ID_TI_1250:
case PCI_DEVICE_ID_TI_1251A:
case PCI_DEVICE_ID_TI_1251B:
case PCI_DEVICE_ID_TI_1450:
socket->socket.zoom_video = ti1250_zoom_video;
}
}
}
/*
* Generic TI init - TI has an extension for the
* INTCTL register that sets the PCI CSC interrupt.
* Make sure we set it correctly at open and init
* time
* - override: disable the PCI CSC interrupt. This makes
* it possible to use the CSC interrupt to probe the
* ISA interrupts.
* - init: set the interrupt to match our PCI state.
* This makes us correctly get PCI CSC interrupt
* events.
*/
static int ti_init(struct yenta_socket *socket)
{
u8 new, reg = exca_readb(socket, I365_INTCTL);
new = reg & ~I365_INTR_ENA;
if (socket->dev->irq)
new |= I365_INTR_ENA;
if (new != reg)
exca_writeb(socket, I365_INTCTL, new);
return 0;
}
static int ti_override(struct yenta_socket *socket)
{
u8 new, reg = exca_readb(socket, I365_INTCTL);
new = reg & ~I365_INTR_ENA;
if (new != reg)
exca_writeb(socket, I365_INTCTL, new);
ti_set_zv(socket);
return 0;
}
static void ti113x_use_isa_irq(struct yenta_socket *socket)
{
int isa_irq = -1;
u8 intctl;
u32 isa_irq_mask = 0;
if (!isa_probe)
return;
/* get a free isa int */
isa_irq_mask = yenta_probe_irq(socket, isa_interrupts);
if (!isa_irq_mask)
return; /* no useable isa irq found */
/* choose highest available */
for (; isa_irq_mask; isa_irq++)
isa_irq_mask >>= 1;
socket->cb_irq = isa_irq;
exca_writeb(socket, I365_CSCINT, (isa_irq << 4));
intctl = exca_readb(socket, I365_INTCTL);
intctl &= ~(I365_INTR_ENA | I365_IRQ_MASK); /* CSC Enable */
exca_writeb(socket, I365_INTCTL, intctl);
dev_info(&socket->dev->dev,
"Yenta TI113x: using isa irq %d for CardBus\n", isa_irq);
}
static int ti113x_override(struct yenta_socket *socket)
{
u8 cardctl;
cardctl = config_readb(socket, TI113X_CARD_CONTROL);
cardctl &= ~(TI113X_CCR_PCI_IRQ_ENA | TI113X_CCR_PCI_IREQ | TI113X_CCR_PCI_CSC);
if (socket->dev->irq)
cardctl |= TI113X_CCR_PCI_IRQ_ENA | TI113X_CCR_PCI_CSC | TI113X_CCR_PCI_IREQ;
else
ti113x_use_isa_irq(socket);
config_writeb(socket, TI113X_CARD_CONTROL, cardctl);
return ti_override(socket);
}
/* irqrouting for func0, probes PCI interrupt and ISA interrupts */
static void ti12xx_irqroute_func0(struct yenta_socket *socket)
{
u32 mfunc, mfunc_old, devctl;
u8 gpio3, gpio3_old;
int pci_irq_status;
mfunc = mfunc_old = config_readl(socket, TI122X_MFUNC);
devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
dev_printk(KERN_INFO, &socket->dev->dev,
"TI: mfunc 0x%08x, devctl 0x%02x\n", mfunc, devctl);
/* make sure PCI interrupts are enabled before probing */
ti_init(socket);
/* test PCI interrupts first. only try fixing if return value is 0! */
pci_irq_status = yenta_probe_cb_irq(socket);
if (pci_irq_status)
goto out;
/*
* We're here which means PCI interrupts are _not_ delivered. try to
* find the right setting (all serial or parallel)
*/
dev_printk(KERN_INFO, &socket->dev->dev,
"TI: probing PCI interrupt failed, trying to fix\n");
/* for serial PCI make sure MFUNC3 is set to IRQSER */
if ((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) {
switch (socket->dev->device) {
case PCI_DEVICE_ID_TI_1250:
case PCI_DEVICE_ID_TI_1251A:
case PCI_DEVICE_ID_TI_1251B:
case PCI_DEVICE_ID_TI_1450:
case PCI_DEVICE_ID_TI_1451A:
case PCI_DEVICE_ID_TI_4450:
case PCI_DEVICE_ID_TI_4451:
/* these chips have no IRQSER setting in MFUNC3 */
break;
default:
mfunc = (mfunc & ~TI122X_MFUNC3_MASK) | TI122X_MFUNC3_IRQSER;
/* write down if changed, probe */
if (mfunc != mfunc_old) {
config_writel(socket, TI122X_MFUNC, mfunc);
pci_irq_status = yenta_probe_cb_irq(socket);
if (pci_irq_status == 1) {
dev_printk(KERN_INFO, &socket->dev->dev,
"TI: all-serial interrupts ok\n");
mfunc_old = mfunc;
goto out;
}
/* not working, back to old value */
mfunc = mfunc_old;
config_writel(socket, TI122X_MFUNC, mfunc);
if (pci_irq_status == -1)
goto out;
}
}
/* serial PCI interrupts not working fall back to parallel */
dev_printk(KERN_INFO, &socket->dev->dev,
"TI: falling back to parallel PCI interrupts\n");
devctl &= ~TI113X_DCR_IMODE_MASK;
devctl |= TI113X_DCR_IMODE_SERIAL; /* serial ISA could be right */
config_writeb(socket, TI113X_DEVICE_CONTROL, devctl);
}
/* parallel PCI interrupts: route INTA */
switch (socket->dev->device) {
case PCI_DEVICE_ID_TI_1250:
case PCI_DEVICE_ID_TI_1251A:
case PCI_DEVICE_ID_TI_1251B:
case PCI_DEVICE_ID_TI_1450:
/* make sure GPIO3 is set to INTA */
gpio3 = gpio3_old = config_readb(socket, TI1250_GPIO3_CONTROL);
gpio3 &= ~TI1250_GPIO_MODE_MASK;
if (gpio3 != gpio3_old)
config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3);
break;
default:
gpio3 = gpio3_old = 0;
mfunc = (mfunc & ~TI122X_MFUNC0_MASK) | TI122X_MFUNC0_INTA;
if (mfunc != mfunc_old)
config_writel(socket, TI122X_MFUNC, mfunc);
}
/* time to probe again */
pci_irq_status = yenta_probe_cb_irq(socket);
if (pci_irq_status == 1) {
mfunc_old = mfunc;
dev_printk(KERN_INFO, &socket->dev->dev,
"TI: parallel PCI interrupts ok\n");
} else {
/* not working, back to old value */
mfunc = mfunc_old;
config_writel(socket, TI122X_MFUNC, mfunc);
if (gpio3 != gpio3_old)
config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3_old);
}
out:
if (pci_irq_status < 1) {
socket->cb_irq = 0;
dev_printk(KERN_INFO, &socket->dev->dev,
"Yenta TI: no PCI interrupts. Fish. "
"Please report.\n");
}
}
/* changes the irq of func1 to match that of func0 */
static int ti12xx_align_irqs(struct yenta_socket *socket, int *old_irq)
{
struct pci_dev *func0;
/* find func0 device */
func0 = pci_get_slot(socket->dev->bus, socket->dev->devfn & ~0x07);
if (!func0)
return 0;
if (old_irq)
*old_irq = socket->cb_irq;
socket->cb_irq = socket->dev->irq = func0->irq;
pci_dev_put(func0);
return 1;
}
/*
* ties INTA and INTB together. also changes the devices irq to that of
* the function 0 device. call from func1 only.
* returns 1 if INTRTIE changed, 0 otherwise.
*/
static int ti12xx_tie_interrupts(struct yenta_socket *socket, int *old_irq)
{
u32 sysctl;
int ret;
sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
if (sysctl & TI122X_SCR_INTRTIE)
return 0;
/* align */
ret = ti12xx_align_irqs(socket, old_irq);
if (!ret)
return 0;
/* tie */
sysctl |= TI122X_SCR_INTRTIE;
config_writel(socket, TI113X_SYSTEM_CONTROL, sysctl);
return 1;
}
/* undo what ti12xx_tie_interrupts() did */
static void ti12xx_untie_interrupts(struct yenta_socket *socket, int old_irq)
{
u32 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
sysctl &= ~TI122X_SCR_INTRTIE;
config_writel(socket, TI113X_SYSTEM_CONTROL, sysctl);
socket->cb_irq = socket->dev->irq = old_irq;
}
/*
* irqrouting for func1, plays with INTB routing
* only touches MFUNC for INTB routing. all other bits are taken
* care of in func0 already.
*/
static void ti12xx_irqroute_func1(struct yenta_socket *socket)
{
u32 mfunc, mfunc_old, devctl, sysctl;
int pci_irq_status;
mfunc = mfunc_old = config_readl(socket, TI122X_MFUNC);
devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
dev_printk(KERN_INFO, &socket->dev->dev,
"TI: mfunc 0x%08x, devctl 0x%02x\n",
mfunc, devctl);
/* if IRQs are configured as tied, align irq of func1 with func0 */
sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
if (sysctl & TI122X_SCR_INTRTIE)
ti12xx_align_irqs(socket, NULL);
/* make sure PCI interrupts are enabled before probing */
ti_init(socket);
/* test PCI interrupts first. only try fixing if return value is 0! */
pci_irq_status = yenta_probe_cb_irq(socket);
if (pci_irq_status)
goto out;
/*
* We're here which means PCI interrupts are _not_ delivered. try to
* find the right setting
*/
dev_printk(KERN_INFO, &socket->dev->dev,
"TI: probing PCI interrupt failed, trying to fix\n");
/* if all serial: set INTRTIE, probe again */
if ((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) {
int old_irq;
if (ti12xx_tie_interrupts(socket, &old_irq)) {
pci_irq_status = yenta_probe_cb_irq(socket);
if (pci_irq_status == 1) {
dev_printk(KERN_INFO, &socket->dev->dev,
"TI: all-serial interrupts, tied ok\n");
goto out;
}
ti12xx_untie_interrupts(socket, old_irq);
}
}
/* parallel PCI: route INTB, probe again */
else {
int old_irq;
switch (socket->dev->device) {
case PCI_DEVICE_ID_TI_1250:
/* the 1250 has one pin for IRQSER/INTB depending on devctl */
break;
case PCI_DEVICE_ID_TI_1251A:
case PCI_DEVICE_ID_TI_1251B:
case PCI_DEVICE_ID_TI_1450:
/*
* those have a pin for IRQSER/INTB plus INTB in MFUNC0
* we alread probed the shared pin, now go for MFUNC0
*/
mfunc = (mfunc & ~TI122X_MFUNC0_MASK) | TI125X_MFUNC0_INTB;
break;
default:
mfunc = (mfunc & ~TI122X_MFUNC1_MASK) | TI122X_MFUNC1_INTB;
break;
}
/* write, probe */
if (mfunc != mfunc_old) {
config_writel(socket, TI122X_MFUNC, mfunc);
pci_irq_status = yenta_probe_cb_irq(socket);
if (pci_irq_status == 1) {
dev_printk(KERN_INFO, &socket->dev->dev,
"TI: parallel PCI interrupts ok\n");
goto out;
}
mfunc = mfunc_old;
config_writel(socket, TI122X_MFUNC, mfunc);
if (pci_irq_status == -1)
goto out;
}
/* still nothing: set INTRTIE */
if (ti12xx_tie_interrupts(socket, &old_irq)) {
pci_irq_status = yenta_probe_cb_irq(socket);
if (pci_irq_status == 1) {
dev_printk(KERN_INFO, &socket->dev->dev,
"TI: parallel PCI interrupts, tied ok\n");
goto out;
}
ti12xx_untie_interrupts(socket, old_irq);
}
}
out:
if (pci_irq_status < 1) {
socket->cb_irq = 0;
dev_printk(KERN_INFO, &socket->dev->dev,
"TI: no PCI interrupts. Fish. Please report.\n");
}
}
/* Returns true value if the second slot of a two-slot controller is empty */
static int ti12xx_2nd_slot_empty(struct yenta_socket *socket)
{
struct pci_dev *func;
struct yenta_socket *slot2;
int devfn;
unsigned int state;
int ret = 1;
u32 sysctl;
/* catch the two-slot controllers */
switch (socket->dev->device) {
case PCI_DEVICE_ID_TI_1220:
case PCI_DEVICE_ID_TI_1221:
case PCI_DEVICE_ID_TI_1225:
case PCI_DEVICE_ID_TI_1251A:
case PCI_DEVICE_ID_TI_1251B:
case PCI_DEVICE_ID_TI_1420:
case PCI_DEVICE_ID_TI_1450:
case PCI_DEVICE_ID_TI_1451A:
case PCI_DEVICE_ID_TI_1520:
case PCI_DEVICE_ID_TI_1620:
case PCI_DEVICE_ID_TI_4520:
case PCI_DEVICE_ID_TI_4450:
case PCI_DEVICE_ID_TI_4451:
/*
* there are way more, but they need to be added in yenta_socket.c
* and pci_ids.h first anyway.
*/
break;
case PCI_DEVICE_ID_TI_XX12:
case PCI_DEVICE_ID_TI_X515:
case PCI_DEVICE_ID_TI_X420:
case PCI_DEVICE_ID_TI_X620:
case PCI_DEVICE_ID_TI_XX21_XX11:
case PCI_DEVICE_ID_TI_7410:
case PCI_DEVICE_ID_TI_7610:
/*
* those are either single or dual slot CB with additional functions
* like 1394, smartcard reader, etc. check the TIEALL flag for them
* the TIEALL flag binds the IRQ of all functions together.
* we catch the single slot variants later.
*/
sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
if (sysctl & TIXX21_SCR_TIEALL)
return 0;
break;
/* single-slot controllers have the 2nd slot empty always :) */
default:
return 1;
}
/* get other slot */
devfn = socket->dev->devfn & ~0x07;
func = pci_get_slot(socket->dev->bus,
(socket->dev->devfn & 0x07) ? devfn : devfn | 0x01);
if (!func)
return 1;
/*
* check that the device id of both slots match. this is needed for the
* XX21 and the XX11 controller that share the same device id for single
* and dual slot controllers. return '2nd slot empty'. we already checked
* if the interrupt is tied to another function.
*/
if (socket->dev->device != func->device)
goto out;
slot2 = pci_get_drvdata(func);
if (!slot2)
goto out;
/* check state */
yenta_get_status(&slot2->socket, &state);
if (state & SS_DETECT) {
ret = 0;
goto out;
}
out:
pci_dev_put(func);
return ret;
}
/*
* TI specifiy parts for the power hook.
*
* some TI's with some CB's produces interrupt storm on power on. it has been
* seen with atheros wlan cards on TI1225 and TI1410. solution is simply to
* disable any CB interrupts during this time.
*/
static int ti12xx_power_hook(struct pcmcia_socket *sock, int operation)
{
struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
u32 mfunc, devctl, sysctl;
u8 gpio3;
/* only POWER_PRE and POWER_POST are interesting */
if ((operation != HOOK_POWER_PRE) && (operation != HOOK_POWER_POST))
return 0;
devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
mfunc = config_readl(socket, TI122X_MFUNC);
/*
* all serial/tied: only disable when modparm set. always doing it
* would mean a regression for working setups 'cos it disables the
* interrupts for both both slots on 2-slot controllers
* (and users of single slot controllers where it's save have to
* live with setting the modparm, most don't have to anyway)
*/
if (((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) &&
(pwr_irqs_off || ti12xx_2nd_slot_empty(socket))) {
switch (socket->dev->device) {
case PCI_DEVICE_ID_TI_1250:
case PCI_DEVICE_ID_TI_1251A:
case PCI_DEVICE_ID_TI_1251B:
case PCI_DEVICE_ID_TI_1450:
case PCI_DEVICE_ID_TI_1451A:
case PCI_DEVICE_ID_TI_4450:
case PCI_DEVICE_ID_TI_4451:
/* these chips have no IRQSER setting in MFUNC3 */
break;
default:
if (operation == HOOK_POWER_PRE)
mfunc = (mfunc & ~TI122X_MFUNC3_MASK);
else
mfunc = (mfunc & ~TI122X_MFUNC3_MASK) | TI122X_MFUNC3_IRQSER;
}
return 0;
}
/* do the job differently for func0/1 */
if ((PCI_FUNC(socket->dev->devfn) == 0) ||
((sysctl & TI122X_SCR_INTRTIE) &&
(pwr_irqs_off || ti12xx_2nd_slot_empty(socket)))) {
/* some bridges are different */
switch (socket->dev->device) {
case PCI_DEVICE_ID_TI_1250:
case PCI_DEVICE_ID_TI_1251A:
case PCI_DEVICE_ID_TI_1251B:
case PCI_DEVICE_ID_TI_1450:
/* those oldies use gpio3 for INTA */
gpio3 = config_readb(socket, TI1250_GPIO3_CONTROL);
if (operation == HOOK_POWER_PRE)
gpio3 = (gpio3 & ~TI1250_GPIO_MODE_MASK) | 0x40;
else
gpio3 &= ~TI1250_GPIO_MODE_MASK;
config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3);
break;
default:
/* all new bridges are the same */
if (operation == HOOK_POWER_PRE)
mfunc &= ~TI122X_MFUNC0_MASK;
else
mfunc |= TI122X_MFUNC0_INTA;
config_writel(socket, TI122X_MFUNC, mfunc);
}
} else {
switch (socket->dev->device) {
case PCI_DEVICE_ID_TI_1251A:
case PCI_DEVICE_ID_TI_1251B:
case PCI_DEVICE_ID_TI_1450:
/* those have INTA elsewhere and INTB in MFUNC0 */
if (operation == HOOK_POWER_PRE)
mfunc &= ~TI122X_MFUNC0_MASK;
else
mfunc |= TI125X_MFUNC0_INTB;
config_writel(socket, TI122X_MFUNC, mfunc);
break;
default:
/* all new bridges are the same */
if (operation == HOOK_POWER_PRE)
mfunc &= ~TI122X_MFUNC1_MASK;
else
mfunc |= TI122X_MFUNC1_INTB;
config_writel(socket, TI122X_MFUNC, mfunc);
}
}
return 0;
}
static int ti12xx_override(struct yenta_socket *socket)
{
u32 val, val_orig;
/* make sure that memory burst is active */
val_orig = val = config_readl(socket, TI113X_SYSTEM_CONTROL);
if (disable_clkrun && PCI_FUNC(socket->dev->devfn) == 0) {
dev_printk(KERN_INFO, &socket->dev->dev,
"Disabling CLKRUN feature\n");
val |= TI113X_SCR_KEEPCLK;
}
if (!(val & TI122X_SCR_MRBURSTUP)) {
dev_printk(KERN_INFO, &socket->dev->dev,
"Enabling burst memory read transactions\n");
val |= TI122X_SCR_MRBURSTUP;
}
if (val_orig != val)
config_writel(socket, TI113X_SYSTEM_CONTROL, val);
/*
* Yenta expects controllers to use CSCINT to route
* CSC interrupts to PCI rather than INTVAL.
*/
val = config_readb(socket, TI1250_DIAGNOSTIC);
dev_printk(KERN_INFO, &socket->dev->dev,
"Using %s to route CSC interrupts to PCI\n",
(val & TI1250_DIAG_PCI_CSC) ? "CSCINT" : "INTVAL");
dev_printk(KERN_INFO, &socket->dev->dev,
"Routing CardBus interrupts to %s\n",
(val & TI1250_DIAG_PCI_IREQ) ? "PCI" : "ISA");
/* do irqrouting, depending on function */
if (PCI_FUNC(socket->dev->devfn) == 0)
ti12xx_irqroute_func0(socket);
else
ti12xx_irqroute_func1(socket);
/* install power hook */
socket->socket.power_hook = ti12xx_power_hook;
return ti_override(socket);
}
static int ti1250_override(struct yenta_socket *socket)
{
u8 old, diag;
old = config_readb(socket, TI1250_DIAGNOSTIC);
diag = old & ~(TI1250_DIAG_PCI_CSC | TI1250_DIAG_PCI_IREQ);
if (socket->cb_irq)
diag |= TI1250_DIAG_PCI_CSC | TI1250_DIAG_PCI_IREQ;
if (diag != old) {
dev_printk(KERN_INFO, &socket->dev->dev,
"adjusting diagnostic: %02x -> %02x\n",
old, diag);
config_writeb(socket, TI1250_DIAGNOSTIC, diag);
}
return ti12xx_override(socket);
}
/**
* EnE specific part. EnE bridges are register compatible with TI bridges but
* have their own test registers and more important their own little problems.
* Some fixup code to make everybody happy (TM).
*/
#ifdef CONFIG_YENTA_ENE_TUNE
/*
* set/clear various test bits:
* Defaults to clear the bit.
* - mask (u8) defines what bits to change
* - bits (u8) is the values to change them to
* -> it's
* current = (current & ~mask) | bits
*/
/* pci ids of devices that wants to have the bit set */
#define DEVID(_vend,_dev,_subvend,_subdev,mask,bits) { \
.vendor = _vend, \
.device = _dev, \
.subvendor = _subvend, \
.subdevice = _subdev, \
.driver_data = ((mask) << 8 | (bits)), \
}
static struct pci_device_id ene_tune_tbl[] = {
/* Echo Audio products based on motorola DSP56301 and DSP56361 */
DEVID(PCI_VENDOR_ID_MOTOROLA, 0x1801, 0xECC0, PCI_ANY_ID,
ENE_TEST_C9_TLTENABLE | ENE_TEST_C9_PFENABLE, ENE_TEST_C9_TLTENABLE),
DEVID(PCI_VENDOR_ID_MOTOROLA, 0x3410, 0xECC0, PCI_ANY_ID,
ENE_TEST_C9_TLTENABLE | ENE_TEST_C9_PFENABLE, ENE_TEST_C9_TLTENABLE),
{}
};
static void ene_tune_bridge(struct pcmcia_socket *sock, struct pci_bus *bus)
{
struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
struct pci_dev *dev;
struct pci_device_id *id = NULL;
u8 test_c9, old_c9, mask, bits;
list_for_each_entry(dev, &bus->devices, bus_list) {
id = (struct pci_device_id *) pci_match_id(ene_tune_tbl, dev);
if (id)
break;
}
test_c9 = old_c9 = config_readb(socket, ENE_TEST_C9);
if (id) {
mask = (id->driver_data >> 8) & 0xFF;
bits = id->driver_data & 0xFF;
test_c9 = (test_c9 & ~mask) | bits;
}
else
/* default to clear TLTEnable bit, old behaviour */
test_c9 &= ~ENE_TEST_C9_TLTENABLE;
dev_printk(KERN_INFO, &socket->dev->dev,
"EnE: chaning testregister 0xC9, %02x -> %02x\n",
old_c9, test_c9);
config_writeb(socket, ENE_TEST_C9, test_c9);
}
static int ene_override(struct yenta_socket *socket)
{
/* install tune_bridge() function */
socket->socket.tune_bridge = ene_tune_bridge;
return ti1250_override(socket);
}
#else
# define ene_override ti1250_override
#endif /* !CONFIG_YENTA_ENE_TUNE */
#endif /* _LINUX_TI113X_H */
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