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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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eaeed5d31d
Polaris is an SMSC reference platform with a SH7709S CPU and LAN9118 ethernet controller. This patch adds support for it. Updated following feedback from Nobuhiro Iwamatsu. Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com> Reviewed-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
150 lines
3.2 KiB
C
150 lines
3.2 KiB
C
/*
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* June 2006 steve.glendinning@smsc.com
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*
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* Polaris-specific resource declaration
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*
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*/
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <linux/platform_device.h>
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#include <linux/smsc911x.h>
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#include <linux/io.h>
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#include <asm/irq.h>
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#include <asm/machvec.h>
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#include <asm/heartbeat.h>
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#include <cpu/gpio.h>
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#include <mach-se/mach/se.h>
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#define BCR2 (0xFFFFFF62)
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#define WCR2 (0xFFFFFF66)
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#define AREA5_WAIT_CTRL (0x1C00)
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#define WAIT_STATES_10 (0x7)
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static struct resource smsc911x_resources[] = {
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[0] = {
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.name = "smsc911x-memory",
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.start = PA_EXT5,
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.end = PA_EXT5 + 0x1fff,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.name = "smsc911x-irq",
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.start = IRQ0_IRQ,
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.end = IRQ0_IRQ,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct smsc911x_platform_config smsc911x_config = {
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.irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
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.irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
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.flags = SMSC911X_USE_32BIT,
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.phy_interface = PHY_INTERFACE_MODE_MII,
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};
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static struct platform_device smsc911x_device = {
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.name = "smsc911x",
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.id = 0,
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.num_resources = ARRAY_SIZE(smsc911x_resources),
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.resource = smsc911x_resources,
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.dev = {
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.platform_data = &smsc911x_config,
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},
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};
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static unsigned char heartbeat_bit_pos[] = { 0, 1, 2, 3 };
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static struct heartbeat_data heartbeat_data = {
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.bit_pos = heartbeat_bit_pos,
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.nr_bits = ARRAY_SIZE(heartbeat_bit_pos),
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.regsize = 8,
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};
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static struct resource heartbeat_resources[] = {
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[0] = {
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.start = PORT_PCDR,
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.end = PORT_PCDR,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device heartbeat_device = {
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.name = "heartbeat",
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.id = -1,
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.dev = {
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.platform_data = &heartbeat_data,
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},
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.num_resources = ARRAY_SIZE(heartbeat_resources),
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.resource = heartbeat_resources,
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};
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static struct platform_device *polaris_devices[] __initdata = {
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&smsc911x_device,
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&heartbeat_device,
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};
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static int __init polaris_initialise(void)
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{
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u16 wcr, bcr_mask;
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printk(KERN_INFO "Configuring Polaris external bus\n");
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/* Configure area 5 with 2 wait states */
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wcr = ctrl_inw(WCR2);
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wcr &= (~AREA5_WAIT_CTRL);
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wcr |= (WAIT_STATES_10 << 10);
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ctrl_outw(wcr, WCR2);
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/* Configure area 5 for 32-bit access */
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bcr_mask = ctrl_inw(BCR2);
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bcr_mask |= 1 << 10;
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ctrl_outw(bcr_mask, BCR2);
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return platform_add_devices(polaris_devices,
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ARRAY_SIZE(polaris_devices));
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}
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arch_initcall(polaris_initialise);
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static struct ipr_data ipr_irq_table[] = {
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/* External IRQs */
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{ IRQ0_IRQ, 0, 0, 1, }, /* IRQ0 */
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{ IRQ1_IRQ, 0, 4, 1, }, /* IRQ1 */
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};
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static unsigned long ipr_offsets[] = {
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INTC_IPRC
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};
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static struct ipr_desc ipr_irq_desc = {
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.ipr_offsets = ipr_offsets,
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.nr_offsets = ARRAY_SIZE(ipr_offsets),
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.ipr_data = ipr_irq_table,
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.nr_irqs = ARRAY_SIZE(ipr_irq_table),
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.chip = {
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.name = "sh7709-ext",
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},
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};
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static void __init init_polaris_irq(void)
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{
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/* Disable all interrupts */
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ctrl_outw(0, BCR_ILCRA);
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ctrl_outw(0, BCR_ILCRB);
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ctrl_outw(0, BCR_ILCRC);
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ctrl_outw(0, BCR_ILCRD);
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ctrl_outw(0, BCR_ILCRE);
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ctrl_outw(0, BCR_ILCRF);
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ctrl_outw(0, BCR_ILCRG);
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register_ipr_controller(&ipr_irq_desc);
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}
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static struct sh_machine_vector mv_polaris __initmv = {
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.mv_name = "Polaris",
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.mv_nr_irqs = 61,
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.mv_init_irq = init_polaris_irq,
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};
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