500 lines
10 KiB
C
500 lines
10 KiB
C
/*
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ti1225.c
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Created: Dec 2005 by Philip Homburg
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*/
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#include "../drivers.h"
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#include <ibm/pci.h>
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#include <sys/vm.h>
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#include <sys/vm_i386.h>
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#include "ti1225.h"
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#include "i82365.h"
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/* The use of interrupts is not yet ready for prime time */
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#define USE_INTS 0
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#define NR_PORTS 2
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PRIVATE struct port
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{
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unsigned p_flags;
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int p_devind;
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u8_t p_cb_busnr;
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u16_t p_exca_port;
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#if USE_INTS
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int p_irq;
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int p_hook;
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#endif
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char *base_ptr;
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volatile struct csr *csr_ptr;
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char buffer[2*I386_PAGE_SIZE];
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} ports[NR_PORTS];
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#define PF_PRESENT 1
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struct pcitab
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{
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u16_t vid;
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u16_t did;
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int checkclass;
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};
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PRIVATE struct pcitab pcitab_ti[]=
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{
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{ 0x104C, 0xAC1C, 0 }, /* TI PCI1225 */
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{ 0x0000, 0x0000, 0 }
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};
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PRIVATE char *progname;
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PRIVATE int debug;
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FORWARD _PROTOTYPE( void init, (void) );
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FORWARD _PROTOTYPE( void hw_init, (struct port *pp) );
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FORWARD _PROTOTYPE( void map_regs, (struct port *pp, u32_t base) );
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FORWARD _PROTOTYPE( void do_int, (struct port *pp) );
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FORWARD _PROTOTYPE( u8_t read_exca, (struct port *pp, int socket, int reg) );
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FORWARD _PROTOTYPE( void do_outb, (port_t port, u8_t value) );
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FORWARD _PROTOTYPE( u8_t do_inb, (port_t port) );
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int main(int argc, char *argv[])
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{
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int c, r;
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message m;
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(progname=strrchr(argv[0],'/')) ? progname++ : (progname=argv[0]);
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if((r=micro_delay_calibrate()) != OK)
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panic("ti1225", "micro_delay_calibrate failed", r);
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debug= 0;
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while (c= getopt(argc, argv, "d?"), c != -1)
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{
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switch(c)
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{
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case '?': panic("ti1225", "Usage: ti1225 [-d]", NO_NUM);
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case 'd': debug++; break;
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default: panic("ti1225", "getopt failed", NO_NUM);
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}
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}
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init();
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for (;;)
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{
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r= receive(ANY, &m);
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if (r != OK)
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panic("ti1225", "receive failed", r);
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printf("ti1225: got message %u from %d\n",
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m.m_type, m.m_source);
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}
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return 0;
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}
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PRIVATE void init()
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{
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int i, r, first, devind, port;
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u16_t vid, did;
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pci_init1(progname);
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first= 1;
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port= 0;
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for (;;)
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{
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if (first)
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{
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first= 0;
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r= pci_first_dev(&devind, &vid, &did);
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}
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else
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r= pci_next_dev(&devind, &vid, &did);
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if (r != 1)
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break;
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for (i= 0; pcitab_ti[i].vid != 0; i++)
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{
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if (pcitab_ti[i].vid != vid)
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continue;
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if (pcitab_ti[i].did != did)
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continue;
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if (pcitab_ti[i].checkclass)
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{
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panic("ti1225",
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"fxp_probe: class check not implemented",
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NO_NUM);
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}
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break;
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}
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if (pcitab_ti[i].vid == 0)
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continue;
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pci_reserve(devind);
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if (debug)
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printf("ti1225: found device %04x/%04x\n", vid, did);
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ports[port].p_devind= devind;
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ports[port].p_flags |= PF_PRESENT;
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port++;
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if (port >= NR_PORTS)
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break;
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}
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for (i= 0; i<NR_PORTS; i++)
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{
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if (!(ports[i].p_flags & PF_PRESENT))
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continue;
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hw_init(&ports[i]);
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}
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}
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PRIVATE void hw_init(pp)
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struct port *pp;
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{
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int i, r, devind, irq, socket;
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u8_t v8;
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u16_t v16;
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u32_t v32;
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devind= pp->p_devind;
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if (debug)
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printf("hw_init: devind = %d\n", devind);
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if (debug)
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{
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v16= pci_attr_r16(devind, PCI_CR);
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printf("ti1225: command register 0x%x\n", v16);
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}
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v32= pci_attr_r32(devind, TI_CB_BASEADDR);
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if (debug)
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printf("ti1225: Cardbus/ExCA base address 0x%x\n", v32);
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map_regs(pp, v32);
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pp->csr_ptr= (struct csr *)pp->base_ptr;
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if (debug)
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{
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v8= pci_attr_r8(devind, TI_PCI_BUS_NR);
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printf("ti1225: PCI bus number %d\n", v8);
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}
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v8= pci_attr_r8(devind, TI_CB_BUS_NR);
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pp->p_cb_busnr= v8;
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if (debug)
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{
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printf("ti1225: CardBus bus number %d\n", v8);
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v8= pci_attr_r8(devind, TI_SO_BUS_NR);
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printf("ti1225: Subordinate bus number %d\n", v8);
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}
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#if USE_INTS
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irq= pci_attr_r8(devind, PCI_ILR);
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pp->p_irq= irq;
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printf("ti1225 using IRQ %d\n", irq);
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#endif
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v32= pci_attr_r32(devind, TI_LEGACY_BA);
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v32 &= ~1;
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if (debug)
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{
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printf("ti1225: PC Card 16-bit legacy-mode base address 0x%x\n",
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v32);
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}
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if (v32 == 0)
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panic("ti1225", "bad lagacy-mode base address 0x%x\n", v32);
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pp->p_exca_port= v32;
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if (debug)
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{
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v32= pci_attr_r32(devind, TI_MF_ROUTE);
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printf("ti1225: Multifunction routing 0x%08x\n", v32);
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}
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#if USE_INTS
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pp->p_hook = pp->p_irq;
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r= sys_irqsetpolicy(pp->p_irq, 0, &pp->p_hook);
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if (r != OK)
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panic("ti1225","sys_irqsetpolicy failed", r);
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#endif
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/* Clear CBB_BC_INTEXCA */
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v16= pci_attr_r16(devind, CBB_BRIDGECTRL);
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if (debug)
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printf("ti1225: Bridge control 0x%04x\n", v16);
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v16 &= ~CBB_BC_INTEXCA;
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pci_attr_w16(devind, CBB_BRIDGECTRL, v16);
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if (debug)
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{
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v32= pci_attr_r32(devind, TI_SYSCTRL);
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printf("ti1225: System Control Register 0x%08x\n", v32);
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v8= pci_attr_r8(devind, TI_CARD_CTRL);
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printf("ti1225: Card Control 0x%02x\n", v8);
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v8= pci_attr_r8(devind, TI_DEV_CTRL);
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printf("ti1225: Device Control 0x%02x\n", v8);
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}
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/* Enable socket interrupts */
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pp->csr_ptr->csr_mask |= CM_PWRMASK | CM_CDMASK | CM_CSTSMASK;
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do_int(pp);
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#if USE_INTS
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r= sys_irqenable(&pp->p_hook);
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if (r != OK)
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panic("ti1225","unable enable interrupts", r);
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#endif
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}
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PRIVATE void map_regs(pp, base)
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struct port *pp;
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u32_t base;
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{
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int r;
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vir_bytes buf_base;
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buf_base= (vir_bytes)pp->buffer;
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if (buf_base % I386_PAGE_SIZE)
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buf_base += I386_PAGE_SIZE-(buf_base % I386_PAGE_SIZE);
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pp->base_ptr= (char *)buf_base;
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if (debug)
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{
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printf("ti1225: map_regs: using %p for %p\n",
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pp->base_ptr, pp->buffer);
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}
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/* Clear low order bits in base */
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base &= ~(u32_t)0xF;
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#if 0
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r= sys_vm_map(SELF, 1 /* map */, (vir_bytes)pp->base_ptr,
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I386_PAGE_SIZE, (phys_bytes)base);
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#else
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r = ENOSYS;
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#endif
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if (r != OK)
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panic("ti1225", "map_regs: sys_vm_map failed", r);
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}
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PRIVATE void do_int(pp)
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struct port *pp;
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{
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int i, r, devind, vcc_5v, vcc_3v, vcc_Xv, vcc_Yv,
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socket_5v, socket_3v, socket_Xv, socket_Yv;
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clock_t t0, t1;
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u32_t csr_event, csr_present, csr_control;
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u8_t v8;
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u16_t v16;
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devind= pp->p_devind;
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v8= pci_attr_r8(devind, TI_CARD_CTRL);
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if (v8 & TI_CCR_IFG)
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{
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printf("ti1225: got functional interrupt\n");
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pci_attr_w8(devind, TI_CARD_CTRL, v8);
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}
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if (debug)
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{
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printf("Socket event: 0x%x\n", pp->csr_ptr->csr_event);
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printf("Socket mask: 0x%x\n", pp->csr_ptr->csr_mask);
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}
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csr_present= pp->csr_ptr->csr_present;
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csr_control= pp->csr_ptr->csr_control;
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if ((csr_present & (CP_CDETECT1|CP_CDETECT2)) != 0)
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{
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if (debug)
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printf("do_int: no card present\n");
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return;
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}
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if (csr_present & CP_BADVCCREQ)
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{
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printf("do_int: Bad Vcc request\n");
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/* return; */
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}
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if (csr_present & CP_DATALOST)
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{
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/* Do we care? */
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if (debug)
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printf("do_int: Data lost\n");
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/* return; */
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}
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if (csr_present & CP_NOTACARD)
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{
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printf("do_int: Not a card\n");
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return;
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}
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if (debug)
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{
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if (csr_present & CP_CBCARD)
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printf("do_int: Cardbus card detected\n");
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if (csr_present & CP_16BITCARD)
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printf("do_int: 16-bit card detected\n");
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}
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if (csr_present & CP_PWRCYCLE)
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{
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if (debug)
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printf("do_int: powered up\n");
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return;
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}
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vcc_5v= !!(csr_present & CP_5VCARD);
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vcc_3v= !!(csr_present & CP_3VCARD);
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vcc_Xv= !!(csr_present & CP_XVCARD);
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vcc_Yv= !!(csr_present & CP_YVCARD);
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if (debug)
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{
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printf("do_int: card supports:%s%s%s%s\n",
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vcc_5v ? " 5V" : "", vcc_3v ? " 3V" : "",
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vcc_Xv ? " X.X V" : "", vcc_Yv ? " Y.Y V" : "");
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}
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socket_5v= !!(csr_present & CP_5VSOCKET);
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socket_3v= !!(csr_present & CP_3VSOCKET);
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socket_Xv= !!(csr_present & CP_XVSOCKET);
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socket_Yv= !!(csr_present & CP_YVSOCKET);
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if (debug)
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{
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printf("do_int: socket supports:%s%s%s%s\n",
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socket_5v ? " 5V" : "", socket_3v ? " 3V" : "",
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socket_Xv ? " X.X V" : "", socket_Yv ? " Y.Y V" : "");
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}
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if (vcc_5v && socket_5v)
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{
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csr_control= (csr_control & ~CC_VCCCTRL) | CC_VCC_5V;
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pp->csr_ptr->csr_control= csr_control;
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if (debug)
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printf("do_int: applying 5V\n");
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}
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else if (vcc_3v && socket_3v)
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{
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csr_control= (csr_control & ~CC_VCCCTRL) | CC_VCC_3V;
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pp->csr_ptr->csr_control= csr_control;
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if (debug)
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printf("do_int: applying 3V\n");
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}
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else if (vcc_Xv && socket_Xv)
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{
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csr_control= (csr_control & ~CC_VCCCTRL) | CC_VCC_XV;
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pp->csr_ptr->csr_control= csr_control;
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printf("do_int: applying X.X V\n");
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}
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else if (vcc_Yv && socket_Yv)
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{
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csr_control= (csr_control & ~CC_VCCCTRL) | CC_VCC_YV;
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pp->csr_ptr->csr_control= csr_control;
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printf("do_int: applying Y.Y V\n");
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}
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else
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{
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printf("do_int: socket and card are not compatible\n");
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return;
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}
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csr_event= pp->csr_ptr->csr_event;
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if (csr_event)
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{
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if (debug)
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printf("clearing socket event\n");
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pp->csr_ptr->csr_event= csr_event;
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if (debug)
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{
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printf("Socket event (cleared): 0x%x\n",
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pp->csr_ptr->csr_event);
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}
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}
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devind= pp->p_devind;
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v8= pci_attr_r8(devind, TI_CARD_CTRL);
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if (v8 & TI_CCR_IFG)
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{
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printf("ti1225: got functional interrupt\n", v8);
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pci_attr_w8(devind, TI_CARD_CTRL, v8);
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}
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if (debug)
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{
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v8= pci_attr_r8(devind, TI_CARD_CTRL);
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printf("TI_CARD_CTRL: 0x%02x\n", v8);
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}
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getuptime(&t0);
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do {
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csr_present= pp->csr_ptr->csr_present;
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if (csr_present & CP_PWRCYCLE)
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break;
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} while (getuptime(&t1)==OK && (t1-t0) < micros_to_ticks(100000));
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if (!(csr_present & CP_PWRCYCLE))
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{
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printf("do_int: not powered up?\n");
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return;
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}
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/* Reset device */
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v16= pci_attr_r16(devind, CBB_BRIDGECTRL);
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v16 |= CBB_BC_CRST;
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pci_attr_w16(devind, CBB_BRIDGECTRL, v16);
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/* Wait one microsecond. Is this correct? What are the specs? */
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micro_delay(1);
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/* Clear CBB_BC_CRST */
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v16= pci_attr_r16(devind, CBB_BRIDGECTRL);
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v16 &= ~CBB_BC_CRST;
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pci_attr_w16(devind, CBB_BRIDGECTRL, v16);
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/* Wait one microsecond after clearing the reset line. Is this
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* correct? What are the specs?
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*/
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micro_delay(1);
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pci_rescan_bus(pp->p_cb_busnr);
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#if USE_INTS
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r= sys_irqenable(&pp->p_hook);
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if (r != OK)
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panic("ti1225","unable enable interrupts", r);
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#endif
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}
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PRIVATE u8_t read_exca(pp, socket, reg)
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struct port *pp;
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int socket;
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int reg;
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{
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u16_t port;
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port= pp->p_exca_port;
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if (port == 0)
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panic("ti1225", "read_exca: bad port", NO_NUM);
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do_outb(port, socket * 0x40 + reg);
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return do_inb(port+1);
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}
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PRIVATE u8_t do_inb(port_t port)
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{
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int r;
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u32_t value;
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r= sys_inb(port, &value);
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if (r != OK)
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panic("ti1225","sys_inb failed", r);
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return value;
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}
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PRIVATE void do_outb(port_t port, u8_t value)
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{
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int r;
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r= sys_outb(port, value);
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if (r != OK)
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panic("ti1225","sys_outb failed", r);
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}
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