#ifdef CONFIG_PCI
static int __init preconfigure_smsc_chip(struct smsc_ircc_subsystem_configuration *conf);
static int __init preconfigure_through_82801(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf);
+static void __init preconfigure_ali_port(struct pci_dev *dev,
+ unsigned short port);
static int __init preconfigure_through_ali(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf);
static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg,
unsigned short ircc_fir,
* pre-configuration not properly done by the BIOS (especially laptops)
* This code is based in part on smcinit.c, tosh1800-smcinit.c
* and tosh2450-smcinit.c. The table lists the device entries
- * for ISA bridges with an LPC (Local Peripheral Configurator)
- * that are in turn used to configure the SMSC device with default
- * SIR and FIR I/O ports, DMA and IRQ.
+ * for ISA bridges with an LPC (Low Pin Count) controller which
+ * handles the communication with the SMSC device. After the LPC
+ * controller is initialized through PCI, the SMSC device is initialized
+ * through a dedicated port in the ISA port-mapped I/O area, this latter
+ * area is used to configure the SMSC device with default
+ * SIR and FIR I/O ports, DMA and IRQ. Different vendors have
+ * used different sets of parameters and different control port
+ * addresses making a subsystem device table necessary.
*/
#ifdef CONFIG_PCI
#define PCIID_VENDOR_INTEL 0x8086
.device = 0x24cc,
.subvendor = 0x103c,
.subdevice = 0x088c,
- .sir_io = 0x02f8, /* Quite certain these are the same for nc8000 as for nc6000 */
+ /* Quite certain these are the same for nc8000 as for nc6000 */
+ .sir_io = 0x02f8,
.fir_io = 0x0130,
- .fir_irq = 0x09,
+ .fir_irq = 0x05,
.fir_dma = 0x03,
.cfg_base = 0x004e,
.preconfigure = preconfigure_through_82801,
.subdevice = 0x0890,
.sir_io = 0x02f8,
.fir_io = 0x0130,
- .fir_irq = 0x09,
+ .fir_irq = 0x05,
.fir_dma = 0x03,
.cfg_base = 0x004e,
.preconfigure = preconfigure_through_82801,
.name = "HP nc6000",
},
{
- .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge */
+ /* Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge */
+ .vendor = PCIID_VENDOR_INTEL,
.device = 0x24c0,
.subvendor = 0x1179,
- .subdevice = 0xffff, /* 0xffff is "any", Not sure, 0x0001 or 0x0002 */
+ .subdevice = 0xffff, /* 0xffff is "any" */
.sir_io = 0x03f8,
.fir_io = 0x0130,
.fir_irq = 0x07,
.fir_dma = 0x01,
.cfg_base = 0x002e,
.preconfigure = preconfigure_through_82801,
- .name = "Toshiba Satellite 2450",
+ .name = "Toshiba laptop with Intel 82801DB/DBL LPC bridge",
},
{
.vendor = PCIID_VENDOR_INTEL, /* Intel 82801CAM ISA bridge */
- .device = 0x248c, /* Some use 24cc? */
+ .device = 0x248c,
.subvendor = 0x1179,
- .subdevice = 0xffff, /* 0xffff is "any", Not sure, 0x0001 or 0x0002 */
+ .subdevice = 0xffff, /* 0xffff is "any" */
.sir_io = 0x03f8,
.fir_io = 0x0130,
.fir_irq = 0x03,
.fir_dma = 0x03,
.cfg_base = 0x002e,
.preconfigure = preconfigure_through_82801,
- .name = "Toshiba Satellite 5100/5200, Tecra 9100",
+ .name = "Toshiba laptop with Intel 82801CAM ISA bridge",
},
{
- .vendor = PCIID_VENDOR_ALI, /* ALi M1533/M1535 PCI to ISA Bridge [Aladdin IV/V/V+] */
+ /* 82801DBM (ICH4-M) LPC Interface Bridge */
+ .vendor = PCIID_VENDOR_INTEL,
+ .device = 0x24cc,
+ .subvendor = 0x1179,
+ .subdevice = 0xffff, /* 0xffff is "any" */
+ .sir_io = 0x03f8,
+ .fir_io = 0x0130,
+ .fir_irq = 0x03,
+ .fir_dma = 0x03,
+ .cfg_base = 0x002e,
+ .preconfigure = preconfigure_through_82801,
+ .name = "Toshiba laptop with Intel 8281DBM LPC bridge",
+ },
+ {
+ /* ALi M1533/M1535 PCI to ISA Bridge [Aladdin IV/V/V+] */
+ .vendor = PCIID_VENDOR_ALI,
.device = 0x1533,
.subvendor = 0x1179,
- .subdevice = 0xffff, /* 0xffff is "any", Not sure, 0x0001 or 0x0002 */
+ .subdevice = 0xffff, /* 0xffff is "any" */
.sir_io = 0x02e8,
.fir_io = 0x02f8,
.fir_irq = 0x07,
.fir_dma = 0x03,
.cfg_base = 0x002e,
.preconfigure = preconfigure_through_ali,
- .name = "Toshiba Satellite 1800",
+ .name = "Toshiba laptop with ALi ISA bridge",
},
{ } // Terminator
};
/*
- * This sets up the basic SMSC parameters (FIR port, SIR port, FIR DMA, FIR IRQ)
+ * This sets up the basic SMSC parameters
+ * (FIR port, SIR port, FIR DMA, FIR IRQ)
* through the chip configuration port.
*/
-static int __init preconfigure_smsc_chip(struct smsc_ircc_subsystem_configuration *conf)
+static int __init preconfigure_smsc_chip(struct
+ smsc_ircc_subsystem_configuration
+ *conf)
{
unsigned short iobase = conf->cfg_base;
unsigned char tmpbyte;
outb(LPC47N227_CFGACCESSKEY, iobase); // enter configuration state
outb(SMSCSIOFLAT_DEVICEID_REG, iobase); // set for device ID
tmpbyte = inb(iobase +1); // Read device ID
- IRDA_DEBUG(0, "Detected Chip id: 0x%02x, setting up registers...\n",tmpbyte);
+ IRDA_DEBUG(0,
+ "Detected Chip id: 0x%02x, setting up registers...\n",
+ tmpbyte);
/* Disable UART1 and set up SIR I/O port */
outb(0x24, iobase); // select CR24 - UART1 base addr
tmpbyte = inb(iobase + 1);
if (tmpbyte != (conf->sir_io >> 2) ) {
IRDA_WARNING("ERROR: could not configure SIR ioport.\n");
+ IRDA_WARNING("Try to supply ircc_cfg argument.\n");
return -ENXIO;
}
outb(SMSCSIOFLAT_UARTMODE0C_REG, iobase); // CR0C - UART mode
tmpbyte = inb(iobase + 1);
- tmpbyte &= ~SMSCSIOFLAT_UART2MODE_MASK | SMSCSIOFLAT_UART2MODE_VAL_IRDA;
+ tmpbyte &= ~SMSCSIOFLAT_UART2MODE_MASK |
+ SMSCSIOFLAT_UART2MODE_VAL_IRDA;
outb(tmpbyte, iobase + 1); // enable IrDA (HPSIR) mode, high speed
outb(LPC47N227_APMBOOTDRIVE_REG, iobase); // CR07 - Auto Pwr Mgt/boot drive sel
return 0;
}
-/* 82801CAM registers */
+/* 82801CAM generic registers */
#define VID 0x00
#define DID 0x02
-#define PIRQA_ROUT 0x60
+#define PIRQ_A_D_ROUT 0x60
+#define SIRQ_CNTL 0x64
+#define PIRQ_E_H_ROUT 0x68
#define PCI_DMA_C 0x90
+/* LPC-specific registers */
#define COM_DEC 0xe0
+#define GEN1_DEC 0xe4
#define LPC_EN 0xe6
#define GEN2_DEC 0xec
/*
- * Sets up the I/O range using the 82801CAM ISA bridge, 82801DBM LPC bridge or
- * Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge. They all work the same way!
+ * Sets up the I/O range using the 82801CAM ISA bridge, 82801DBM LPC bridge
+ * or Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge.
+ * They all work the same way!
*/
static int __init preconfigure_through_82801(struct pci_dev *dev,
- struct smsc_ircc_subsystem_configuration *conf)
+ struct
+ smsc_ircc_subsystem_configuration
+ *conf)
{
unsigned short tmpword;
- int ret;
+ unsigned char tmpbyte;
- IRDA_MESSAGE("Setting up the SMSC device via the 82801 controller.\n");
- pci_write_config_byte(dev, COM_DEC, 0x10);
+ IRDA_MESSAGE("Setting up Intel 82801 controller and SMSC device\n");
+ /*
+ * Select the range for the COMA COM port (SIR)
+ * Register COM_DEC:
+ * Bit 7: reserved
+ * Bit 6-4, COMB decode range
+ * Bit 3: reserved
+ * Bit 2-0, COMA decode range
+ *
+ * Decode ranges:
+ * 000 = 0x3f8-0x3ff (COM1)
+ * 001 = 0x2f8-0x2ff (COM2)
+ * 010 = 0x220-0x227
+ * 011 = 0x228-0x22f
+ * 100 = 0x238-0x23f
+ * 101 = 0x2e8-0x2ef (COM4)
+ * 110 = 0x338-0x33f
+ * 111 = 0x3e8-0x3ef (COM3)
+ */
+ pci_read_config_byte(dev, COM_DEC, &tmpbyte);
+ tmpbyte &= 0xf8; /* mask COMA bits */
+ switch(conf->sir_io) {
+ case 0x3f8:
+ tmpbyte |= 0x00;
+ break;
+ case 0x2f8:
+ tmpbyte |= 0x01;
+ break;
+ case 0x220:
+ tmpbyte |= 0x02;
+ break;
+ case 0x228:
+ tmpbyte |= 0x03;
+ break;
+ case 0x238:
+ tmpbyte |= 0x04;
+ break;
+ case 0x2e8:
+ tmpbyte |= 0x05;
+ break;
+ case 0x338:
+ tmpbyte |= 0x06;
+ break;
+ case 0x3e8:
+ tmpbyte |= 0x07;
+ break;
+ default:
+ tmpbyte |= 0x01; /* COM2 default */
+ }
+ IRDA_DEBUG(1, "COM_DEC (write): 0x%02x\n", tmpbyte);
+ pci_write_config_byte(dev, COM_DEC, tmpbyte);
- /* Enable LPC */
- pci_read_config_word(dev, LPC_EN, &tmpword); /* LPC_EN register */
- tmpword &= 0xfffd; /* mask bit 1 */
- tmpword |= 0x0001; /* set bit 0 : COMA addr range enable */
+ /* Enable Low Pin Count interface */
+ pci_read_config_word(dev, LPC_EN, &tmpword);
+ /* These seem to be set up at all times,
+ * just make sure it is properly set.
+ */
+ switch(conf->cfg_base) {
+ case 0x04e:
+ tmpword |= 0x2000;
+ break;
+ case 0x02e:
+ tmpword |= 0x1000;
+ break;
+ case 0x062:
+ tmpword |= 0x0800;
+ break;
+ case 0x060:
+ tmpword |= 0x0400;
+ break;
+ default:
+ IRDA_WARNING("Uncommon I/O base address: 0x%04x\n",
+ conf->cfg_base);
+ break;
+ }
+ tmpword &= 0xfffd; /* disable LPC COMB */
+ tmpword |= 0x0001; /* set bit 0 : enable LPC COMA addr range (GEN2) */
+ IRDA_DEBUG(1, "LPC_EN (write): 0x%04x\n", tmpword);
pci_write_config_word(dev, LPC_EN, tmpword);
- /* Setup DMA */
- pci_write_config_word(dev, PCI_DMA_C, 0xc0c0); /* LPC I/F DMA on, channel 3 -- rtm (?? PCI DMA ?) */
- pci_write_config_word(dev, GEN2_DEC, 0x131); /* LPC I/F 2nd decode range */
+ /*
+ * Configure LPC DMA channel
+ * PCI_DMA_C bits:
+ * Bit 15-14: DMA channel 7 select
+ * Bit 13-12: DMA channel 6 select
+ * Bit 11-10: DMA channel 5 select
+ * Bit 9-8: Reserved
+ * Bit 7-6: DMA channel 3 select
+ * Bit 5-4: DMA channel 2 select
+ * Bit 3-2: DMA channel 1 select
+ * Bit 1-0: DMA channel 0 select
+ * 00 = Reserved value
+ * 01 = PC/PCI DMA
+ * 10 = Reserved value
+ * 11 = LPC I/F DMA
+ */
+ pci_read_config_word(dev, PCI_DMA_C, &tmpword);
+ switch(conf->fir_dma) {
+ case 0x07:
+ tmpword |= 0xc000;
+ break;
+ case 0x06:
+ tmpword |= 0x3000;
+ break;
+ case 0x05:
+ tmpword |= 0x0c00;
+ break;
+ case 0x03:
+ tmpword |= 0x00c0;
+ break;
+ case 0x02:
+ tmpword |= 0x0030;
+ break;
+ case 0x01:
+ tmpword |= 0x000c;
+ break;
+ case 0x00:
+ tmpword |= 0x0003;
+ break;
+ default:
+ break; /* do not change settings */
+ }
+ IRDA_DEBUG(1, "PCI_DMA_C (write): 0x%04x\n", tmpword);
+ pci_write_config_word(dev, PCI_DMA_C, tmpword);
+
+ /*
+ * GEN2_DEC bits:
+ * Bit 15-4: Generic I/O range
+ * Bit 3-1: reserved (read as 0)
+ * Bit 0: enable GEN2 range on LPC I/F
+ */
+ tmpword = conf->fir_io & 0xfff8;
+ tmpword |= 0x0001;
+ IRDA_DEBUG(1, "GEN2_DEC (write): 0x%04x\n", tmpword);
+ pci_write_config_word(dev, GEN2_DEC, tmpword);
/* Pre-configure chip */
- ret = preconfigure_smsc_chip(conf);
+ return preconfigure_smsc_chip(conf);
+}
- /* Disable LPC */
- pci_read_config_word(dev, LPC_EN, &tmpword); /* LPC_EN register */
- tmpword &= 0xfffc; /* mask bit 1 and bit 0, COMA addr range disable */
- pci_write_config_word(dev, LPC_EN, tmpword);
- return ret;
+/*
+ * Pre-configure a certain port on the ALi 1533 bridge.
+ * This is based on reverse-engineering since ALi does not
+ * provide any data sheet for the 1533 chip.
+ */
+static void __init preconfigure_ali_port(struct pci_dev *dev,
+ unsigned short port)
+{
+ unsigned char reg;
+ /* These bits obviously control the different ports */
+ unsigned char mask;
+ unsigned char tmpbyte;
+
+ switch(port) {
+ case 0x0130:
+ case 0x0178:
+ reg = 0xb0;
+ mask = 0x80;
+ break;
+ case 0x03f8:
+ reg = 0xb4;
+ mask = 0x80;
+ break;
+ case 0x02f8:
+ reg = 0xb4;
+ mask = 0x30;
+ break;
+ case 0x02e8:
+ reg = 0xb4;
+ mask = 0x08;
+ break;
+ default:
+ IRDA_ERROR("Failed to configure unsupported port on ALi 1533 bridge: 0x%04x\n", port);
+ return;
+ }
+
+ pci_read_config_byte(dev, reg, &tmpbyte);
+ /* Turn on the right bits */
+ tmpbyte |= mask;
+ pci_write_config_byte(dev, reg, tmpbyte);
+ IRDA_MESSAGE("Activated ALi 1533 ISA bridge port 0x%04x.\n", port);
+ return;
}
static int __init preconfigure_through_ali(struct pci_dev *dev,
- struct smsc_ircc_subsystem_configuration *conf)
+ struct
+ smsc_ircc_subsystem_configuration
+ *conf)
{
- /* TODO: put in ALi 1533 configuration here. */
- IRDA_MESSAGE("SORRY: %s has an unsupported bridge controller (ALi): not pre-configured.\n", conf->name);
- return -ENODEV;
+ /* Configure the two ports on the ALi 1533 */
+ preconfigure_ali_port(dev, conf->sir_io);
+ preconfigure_ali_port(dev, conf->fir_io);
+
+ /* Pre-configure chip */
+ return preconfigure_smsc_chip(conf);
}
static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg,
struct smsc_ircc_subsystem_configuration *conf;
/*
- * Cache the subsystem vendor/device: some manufacturers fail to set
- * this for all components, so we save it in case there is just
- * 0x0000 0x0000 on the device we want to check.
+ * Cache the subsystem vendor/device:
+ * some manufacturers fail to set this for all components,
+ * so we save it in case there is just 0x0000 0x0000 on the
+ * device we want to check.
*/
if (dev->subsystem_vendor != 0x0000U) {
ss_vendor = dev->subsystem_vendor;
for( ; conf->subvendor; conf++) {
if(conf->vendor == dev->vendor &&
conf->device == dev->device &&
- conf->subvendor == ss_vendor && /* Sometimes these are cached values */
- (conf->subdevice == ss_device || conf->subdevice == 0xffff)) {
- struct smsc_ircc_subsystem_configuration tmpconf;
+ conf->subvendor == ss_vendor &&
+ /* Sometimes these are cached values */
+ (conf->subdevice == ss_device ||
+ conf->subdevice == 0xffff)) {
+ struct smsc_ircc_subsystem_configuration
+ tmpconf;
- memcpy(&tmpconf, conf, sizeof(struct smsc_ircc_subsystem_configuration));
+ memcpy(&tmpconf, conf,
+ sizeof(struct smsc_ircc_subsystem_configuration));
- /* Override the default values with anything passed in as parameter */
+ /*
+ * Override the default values with anything
+ * passed in as parameter
+ */
if (ircc_cfg != 0)
tmpconf.cfg_base = ircc_cfg;
if (ircc_fir != 0)
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