Hi Ralf Attached patch implements support for backplane on the TX4927 based board. Tested using PCI and IDE on the backplane. Please review ... Thanks Manish Lachwani
Source: MontaVista Software, Inc. | http://www.mvista.com | Manish Lachwani <mlachwani@xxxxxxxxxx> Type: Enhancement Disposition: Submitted to Linux-MIPS Description: Support for Backplane on the Toshiba 4400. Tested using PCI and IDE on the backplane Index: linux/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_irq.c =================================================================== --- linux.orig/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_irq.c +++ linux/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_irq.c @@ -337,7 +337,6 @@ return (sw_irq); } -//#define TOSHIBA_RBTX4927_PIC_ACTION(s) { no_action, 0, CPU_MASK_NONE, s, NULL, NULL } #define TOSHIBA_RBTX4927_PIC_ACTION(s) { no_action, SA_SHIRQ, CPU_MASK_NONE, s, NULL, NULL } static struct irqaction toshiba_rbtx4927_irq_ioc_action = TOSHIBA_RBTX4927_PIC_ACTION(TOSHIBA_RBTX4927_IOC_NAME); @@ -513,7 +512,7 @@ #ifdef CONFIG_TOSHIBA_FPCIB0 -static void __init toshiba_rbtx4927_irq_isa_init(void) +void toshiba_rbtx4927_irq_isa_init(void) { int i; @@ -675,13 +674,6 @@ tx4927_irq_init(); toshiba_rbtx4927_irq_ioc_init(); -#ifdef CONFIG_TOSHIBA_FPCIB0 - { - if (tx4927_using_backplane) { - toshiba_rbtx4927_irq_isa_init(); - } - } -#endif wbflush(); Index: linux/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_setup.c =================================================================== --- linux.orig/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_setup.c +++ linux/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_setup.c @@ -242,6 +242,16 @@ EARLY_PCI_OP(write, word, u16) EARLY_PCI_OP(write, dword, u32) +#ifdef CONFIG_TOSHIBA_FPCIB0 +extern void toshiba_rbtx4927_irq_isa_init(); +#endif + +/* + * tx4927_pcibios_init is now an arch_initcall and no longer + * called from pci_setup(). As a result, we can determine whether + * the board has a backplane or not only after tx4927_pcibios_init + * is done. + */ static int __init tx4927_pcibios_init(void) { unsigned int id; @@ -345,6 +355,9 @@ s); } + /* + * This is IDE on the backplane + */ if (id == 0x91301055) { u8 v08_04; u8 v08_09; @@ -481,6 +494,74 @@ TOSHIBA_RBTX4927_SETUP_DPRINTK(TOSHIBA_RBTX4927_SETUP_PCIBIOS, "+\n"); + /* Backplane */ + early_read_config_dword(hose, busno, busno, 0x90, + PCI_VENDOR_ID, &id); + + /* Check backplane */ + if (id == 0x94601055) { + tx4927_using_backplane = 1; + printk("backplane board IS installed\n"); + } + else + printk("No Backplane \n"); + +#ifdef CONFIG_TOSHIBA_FPCIB0 +{ + if (tx4927_using_backplane) { + TOSHIBA_RBTX4927_SETUP_DPRINTK + (TOSHIBA_RBTX4927_SETUP_SETUP, + ":fpcibo=yes\n"); + + TOSHIBA_RBTX4927_SETUP_DPRINTK + (TOSHIBA_RBTX4927_SETUP_SETUP, + ":smsc_fdc37m81x_init()\n"); + smsc_fdc37m81x_init(0x3f0); + + TOSHIBA_RBTX4927_SETUP_DPRINTK + (TOSHIBA_RBTX4927_SETUP_SETUP, + ":smsc_fdc37m81x_config_beg()\n"); + smsc_fdc37m81x_config_beg(); + + TOSHIBA_RBTX4927_SETUP_DPRINTK + (TOSHIBA_RBTX4927_SETUP_SETUP, + ":smsc_fdc37m81x_config_set(KBD)\n"); + smsc_fdc37m81x_config_set(SMSC_FDC37M81X_DNUM, + SMSC_FDC37M81X_KBD); + smsc_fdc37m81x_config_set(SMSC_FDC37M81X_INT, 1); + smsc_fdc37m81x_config_set(SMSC_FDC37M81X_INT2, 12); + smsc_fdc37m81x_config_set(SMSC_FDC37M81X_ACTIVE, + 1); + + smsc_fdc37m81x_config_end(); + TOSHIBA_RBTX4927_SETUP_DPRINTK + (TOSHIBA_RBTX4927_SETUP_SETUP, + ":smsc_fdc37m81x_config_end()\n"); + } else { + TOSHIBA_RBTX4927_SETUP_DPRINTK + (TOSHIBA_RBTX4927_SETUP_SETUP, + ":fpcibo=not_found\n"); + } +} +#else + { + TOSHIBA_RBTX4927_SETUP_DPRINTK + (TOSHIBA_RBTX4927_SETUP_SETUP, ":fpcibo=no\n"); + } +#endif + +#ifdef CONFIG_TOSHIBA_FPCIB0 + if (tx4927_using_backplane) { + /* + * This function below does a critical job of allocating + * IRQ for IDE. Since at the time arch_init_irq() calls this + * the PCI is not initialized and we dont know whether + * there is backplane or not. Hence, we do this here + */ + toshiba_rbtx4927_irq_isa_init(); + } +#endif + return 0; } @@ -869,56 +950,6 @@ #endif tx4927_pci_setup(); - if (tx4927_using_backplane == 1) - printk("backplane board IS installed\n"); - else - printk("No Backplane \n"); - - /* this is on ISA bus behind PCI bus, so need PCI up first */ -#ifdef CONFIG_TOSHIBA_FPCIB0 - { - if (tx4927_using_backplane) { - TOSHIBA_RBTX4927_SETUP_DPRINTK - (TOSHIBA_RBTX4927_SETUP_SETUP, - ":fpcibo=yes\n"); - - TOSHIBA_RBTX4927_SETUP_DPRINTK - (TOSHIBA_RBTX4927_SETUP_SETUP, - ":smsc_fdc37m81x_init()\n"); - smsc_fdc37m81x_init(0x3f0); - - TOSHIBA_RBTX4927_SETUP_DPRINTK - (TOSHIBA_RBTX4927_SETUP_SETUP, - ":smsc_fdc37m81x_config_beg()\n"); - smsc_fdc37m81x_config_beg(); - - TOSHIBA_RBTX4927_SETUP_DPRINTK - (TOSHIBA_RBTX4927_SETUP_SETUP, - ":smsc_fdc37m81x_config_set(KBD)\n"); - smsc_fdc37m81x_config_set(SMSC_FDC37M81X_DNUM, - SMSC_FDC37M81X_KBD); - smsc_fdc37m81x_config_set(SMSC_FDC37M81X_INT, 1); - smsc_fdc37m81x_config_set(SMSC_FDC37M81X_INT2, 12); - smsc_fdc37m81x_config_set(SMSC_FDC37M81X_ACTIVE, - 1); - - smsc_fdc37m81x_config_end(); - TOSHIBA_RBTX4927_SETUP_DPRINTK - (TOSHIBA_RBTX4927_SETUP_SETUP, - ":smsc_fdc37m81x_config_end()\n"); - } else { - TOSHIBA_RBTX4927_SETUP_DPRINTK - (TOSHIBA_RBTX4927_SETUP_SETUP, - ":fpcibo=not_found\n"); - } - } -#else - { - TOSHIBA_RBTX4927_SETUP_DPRINTK - (TOSHIBA_RBTX4927_SETUP_SETUP, ":fpcibo=no\n"); - } -#endif - #endif /* CONFIG_PCI */ #ifdef CONFIG_SERIAL_TXX9_CONSOLE
