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Diffstat (limited to 'arch/alpha/kernel/core_lca.c')
-rw-r--r--arch/alpha/kernel/core_lca.c517
1 files changed, 0 insertions, 517 deletions
diff --git a/arch/alpha/kernel/core_lca.c b/arch/alpha/kernel/core_lca.c
deleted file mode 100644
index 57e0750419f290..00000000000000
--- a/arch/alpha/kernel/core_lca.c
+++ /dev/null
@@ -1,517 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/arch/alpha/kernel/core_lca.c
- *
- * Written by David Mosberger (davidm@cs.arizona.edu) with some code
- * taken from Dave Rusling's (david.rusling@reo.mts.dec.com) 32-bit
- * bios code.
- *
- * Code common to all LCA core logic chips.
- */
-
-#define __EXTERN_INLINE inline
-#include <asm/io.h>
-#include <asm/core_lca.h>
-#undef __EXTERN_INLINE
-
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/tty.h>
-
-#include <asm/ptrace.h>
-#include <asm/irq_regs.h>
-#include <asm/smp.h>
-
-#include "proto.h"
-#include "pci_impl.h"
-
-
-/*
- * BIOS32-style PCI interface:
- */
-
-/*
- * Machine check reasons. Defined according to PALcode sources
- * (osf.h and platform.h).
- */
-#define MCHK_K_TPERR 0x0080
-#define MCHK_K_TCPERR 0x0082
-#define MCHK_K_HERR 0x0084
-#define MCHK_K_ECC_C 0x0086
-#define MCHK_K_ECC_NC 0x0088
-#define MCHK_K_UNKNOWN 0x008A
-#define MCHK_K_CACKSOFT 0x008C
-#define MCHK_K_BUGCHECK 0x008E
-#define MCHK_K_OS_BUGCHECK 0x0090
-#define MCHK_K_DCPERR 0x0092
-#define MCHK_K_ICPERR 0x0094
-
-
-/*
- * Platform-specific machine-check reasons:
- */
-#define MCHK_K_SIO_SERR 0x204 /* all platforms so far */
-#define MCHK_K_SIO_IOCHK 0x206 /* all platforms so far */
-#define MCHK_K_DCSR 0x208 /* all but Noname */
-
-
-/*
- * Given a bus, device, and function number, compute resulting
- * configuration space address and setup the LCA_IOC_CONF register
- * accordingly. It is therefore not safe to have concurrent
- * invocations to configuration space access routines, but there
- * really shouldn't be any need for this.
- *
- * Type 0:
- *
- * 3 3|3 3 2 2|2 2 2 2|2 2 2 2|1 1 1 1|1 1 1 1|1 1
- * 3 2|1 0 9 8|7 6 5 4|3 2 1 0|9 8 7 6|5 4 3 2|1 0 9 8|7 6 5 4|3 2 1 0
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * | | | | | | | | | | | | | | | | | | | | | | | |F|F|F|R|R|R|R|R|R|0|0|
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- *
- * 31:11 Device select bit.
- * 10:8 Function number
- * 7:2 Register number
- *
- * Type 1:
- *
- * 3 3|3 3 2 2|2 2 2 2|2 2 2 2|1 1 1 1|1 1 1 1|1 1
- * 3 2|1 0 9 8|7 6 5 4|3 2 1 0|9 8 7 6|5 4 3 2|1 0 9 8|7 6 5 4|3 2 1 0
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * | | | | | | | | | | |B|B|B|B|B|B|B|B|D|D|D|D|D|F|F|F|R|R|R|R|R|R|0|1|
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- *
- * 31:24 reserved
- * 23:16 bus number (8 bits = 128 possible buses)
- * 15:11 Device number (5 bits)
- * 10:8 function number
- * 7:2 register number
- *
- * Notes:
- * The function number selects which function of a multi-function device
- * (e.g., SCSI and Ethernet).
- *
- * The register selects a DWORD (32 bit) register offset. Hence it
- * doesn't get shifted by 2 bits as we want to "drop" the bottom two
- * bits.
- */
-
-static int
-mk_conf_addr(struct pci_bus *pbus, unsigned int device_fn, int where,
- unsigned long *pci_addr)
-{
- unsigned long addr;
- u8 bus = pbus->number;
-
- if (bus == 0) {
- int device = device_fn >> 3;
- int func = device_fn & 0x7;
-
- /* Type 0 configuration cycle. */
-
- if (device > 12) {
- return -1;
- }
-
- *(vulp)LCA_IOC_CONF = 0;
- addr = (1 << (11 + device)) | (func << 8) | where;
- } else {
- /* Type 1 configuration cycle. */
- *(vulp)LCA_IOC_CONF = 1;
- addr = (bus << 16) | (device_fn << 8) | where;
- }
- *pci_addr = addr;
- return 0;
-}
-
-static unsigned int
-conf_read(unsigned long addr)
-{
- unsigned long flags, code, stat0;
- unsigned int value;
-
- local_irq_save(flags);
-
- /* Reset status register to avoid losing errors. */
- stat0 = *(vulp)LCA_IOC_STAT0;
- *(vulp)LCA_IOC_STAT0 = stat0;
- mb();
-
- /* Access configuration space. */
- value = *(vuip)addr;
- draina();
-
- stat0 = *(vulp)LCA_IOC_STAT0;
- if (stat0 & LCA_IOC_STAT0_ERR) {
- code = ((stat0 >> LCA_IOC_STAT0_CODE_SHIFT)
- & LCA_IOC_STAT0_CODE_MASK);
- if (code != 1) {
- printk("lca.c:conf_read: got stat0=%lx\n", stat0);
- }
-
- /* Reset error status. */
- *(vulp)LCA_IOC_STAT0 = stat0;
- mb();
-
- /* Reset machine check. */
- wrmces(0x7);
-
- value = 0xffffffff;
- }
- local_irq_restore(flags);
- return value;
-}
-
-static void
-conf_write(unsigned long addr, unsigned int value)
-{
- unsigned long flags, code, stat0;
-
- local_irq_save(flags); /* avoid getting hit by machine check */
-
- /* Reset status register to avoid losing errors. */
- stat0 = *(vulp)LCA_IOC_STAT0;
- *(vulp)LCA_IOC_STAT0 = stat0;
- mb();
-
- /* Access configuration space. */
- *(vuip)addr = value;
- draina();
-
- stat0 = *(vulp)LCA_IOC_STAT0;
- if (stat0 & LCA_IOC_STAT0_ERR) {
- code = ((stat0 >> LCA_IOC_STAT0_CODE_SHIFT)
- & LCA_IOC_STAT0_CODE_MASK);
- if (code != 1) {
- printk("lca.c:conf_write: got stat0=%lx\n", stat0);
- }
-
- /* Reset error status. */
- *(vulp)LCA_IOC_STAT0 = stat0;
- mb();
-
- /* Reset machine check. */
- wrmces(0x7);
- }
- local_irq_restore(flags);
-}
-
-static int
-lca_read_config(struct pci_bus *bus, unsigned int devfn, int where,
- int size, u32 *value)
-{
- unsigned long addr, pci_addr;
- long mask;
- int shift;
-
- if (mk_conf_addr(bus, devfn, where, &pci_addr))
- return PCIBIOS_DEVICE_NOT_FOUND;
-
- shift = (where & 3) * 8;
- mask = (size - 1) * 8;
- addr = (pci_addr << 5) + mask + LCA_CONF;
- *value = conf_read(addr) >> (shift);
- return PCIBIOS_SUCCESSFUL;
-}
-
-static int
-lca_write_config(struct pci_bus *bus, unsigned int devfn, int where, int size,
- u32 value)
-{
- unsigned long addr, pci_addr;
- long mask;
-
- if (mk_conf_addr(bus, devfn, where, &pci_addr))
- return PCIBIOS_DEVICE_NOT_FOUND;
-
- mask = (size - 1) * 8;
- addr = (pci_addr << 5) + mask + LCA_CONF;
- conf_write(addr, value << ((where & 3) * 8));
- return PCIBIOS_SUCCESSFUL;
-}
-
-struct pci_ops lca_pci_ops =
-{
- .read = lca_read_config,
- .write = lca_write_config,
-};
-
-void
-lca_pci_tbi(struct pci_controller *hose, dma_addr_t start, dma_addr_t end)
-{
- wmb();
- *(vulp)LCA_IOC_TBIA = 0;
- mb();
-}
-
-void __init
-lca_init_arch(void)
-{
- struct pci_controller *hose;
-
- /*
- * Create our single hose.
- */
-
- pci_isa_hose = hose = alloc_pci_controller();
- hose->io_space = &ioport_resource;
- hose->mem_space = &iomem_resource;
- hose->index = 0;
-
- hose->sparse_mem_base = LCA_SPARSE_MEM - IDENT_ADDR;
- hose->dense_mem_base = LCA_DENSE_MEM - IDENT_ADDR;
- hose->sparse_io_base = LCA_IO - IDENT_ADDR;
- hose->dense_io_base = 0;
-
- /*
- * Set up the PCI to main memory translation windows.
- *
- * Mimic the SRM settings for the direct-map window.
- * Window 0 is scatter-gather 8MB at 8MB (for isa).
- * Window 1 is direct access 1GB at 1GB.
- *
- * Note that we do not try to save any of the DMA window CSRs
- * before setting them, since we cannot read those CSRs on LCA.
- */
- hose->sg_isa = iommu_arena_new(hose, 0x00800000, 0x00800000,
- SMP_CACHE_BYTES);
- hose->sg_pci = NULL;
- __direct_map_base = 0x40000000;
- __direct_map_size = 0x40000000;
-
- *(vulp)LCA_IOC_W_BASE0 = hose->sg_isa->dma_base | (3UL << 32);
- *(vulp)LCA_IOC_W_MASK0 = (hose->sg_isa->size - 1) & 0xfff00000;
- *(vulp)LCA_IOC_T_BASE0 = virt_to_phys(hose->sg_isa->ptes);
-
- *(vulp)LCA_IOC_W_BASE1 = __direct_map_base | (2UL << 32);
- *(vulp)LCA_IOC_W_MASK1 = (__direct_map_size - 1) & 0xfff00000;
- *(vulp)LCA_IOC_T_BASE1 = 0;
-
- *(vulp)LCA_IOC_TB_ENA = 0x80;
-
- lca_pci_tbi(hose, 0, -1);
-
- /*
- * Disable PCI parity for now. The NCR53c810 chip has
- * troubles meeting the PCI spec which results in
- * data parity errors.
- */
- *(vulp)LCA_IOC_PAR_DIS = 1UL<<5;
-
- /*
- * Finally, set up for restoring the correct HAE if using SRM.
- * Again, since we cannot read many of the CSRs on the LCA,
- * one of which happens to be the HAE, we save the value that
- * the SRM will expect...
- */
- if (alpha_using_srm)
- srm_hae = 0x80000000UL;
-}
-
-/*
- * Constants used during machine-check handling. I suppose these
- * could be moved into lca.h but I don't see much reason why anybody
- * else would want to use them.
- */
-
-#define ESR_EAV (1UL<< 0) /* error address valid */
-#define ESR_CEE (1UL<< 1) /* correctable error */
-#define ESR_UEE (1UL<< 2) /* uncorrectable error */
-#define ESR_WRE (1UL<< 3) /* write-error */
-#define ESR_SOR (1UL<< 4) /* error source */
-#define ESR_CTE (1UL<< 7) /* cache-tag error */
-#define ESR_MSE (1UL<< 9) /* multiple soft errors */
-#define ESR_MHE (1UL<<10) /* multiple hard errors */
-#define ESR_NXM (1UL<<12) /* non-existent memory */
-
-#define IOC_ERR ( 1<<4) /* ioc logs an error */
-#define IOC_CMD_SHIFT 0
-#define IOC_CMD (0xf<<IOC_CMD_SHIFT)
-#define IOC_CODE_SHIFT 8
-#define IOC_CODE (0xf<<IOC_CODE_SHIFT)
-#define IOC_LOST ( 1<<5)
-#define IOC_P_NBR ((__u32) ~((1<<13) - 1))
-
-static void
-mem_error(unsigned long esr, unsigned long ear)
-{
- printk(" %s %s error to %s occurred at address %x\n",
- ((esr & ESR_CEE) ? "Correctable" :
- (esr & ESR_UEE) ? "Uncorrectable" : "A"),
- (esr & ESR_WRE) ? "write" : "read",
- (esr & ESR_SOR) ? "memory" : "b-cache",
- (unsigned) (ear & 0x1ffffff8));
- if (esr & ESR_CTE) {
- printk(" A b-cache tag parity error was detected.\n");
- }
- if (esr & ESR_MSE) {
- printk(" Several other correctable errors occurred.\n");
- }
- if (esr & ESR_MHE) {
- printk(" Several other uncorrectable errors occurred.\n");
- }
- if (esr & ESR_NXM) {
- printk(" Attempted to access non-existent memory.\n");
- }
-}
-
-static void
-ioc_error(__u32 stat0, __u32 stat1)
-{
- static const char * const pci_cmd[] = {
- "Interrupt Acknowledge", "Special", "I/O Read", "I/O Write",
- "Rsvd 1", "Rsvd 2", "Memory Read", "Memory Write", "Rsvd3",
- "Rsvd4", "Configuration Read", "Configuration Write",
- "Memory Read Multiple", "Dual Address", "Memory Read Line",
- "Memory Write and Invalidate"
- };
- static const char * const err_name[] = {
- "exceeded retry limit", "no device", "bad data parity",
- "target abort", "bad address parity", "page table read error",
- "invalid page", "data error"
- };
- unsigned code = (stat0 & IOC_CODE) >> IOC_CODE_SHIFT;
- unsigned cmd = (stat0 & IOC_CMD) >> IOC_CMD_SHIFT;
-
- printk(" %s initiated PCI %s cycle to address %x"
- " failed due to %s.\n",
- code > 3 ? "PCI" : "CPU", pci_cmd[cmd], stat1, err_name[code]);
-
- if (code == 5 || code == 6) {
- printk(" (Error occurred at PCI memory address %x.)\n",
- (stat0 & ~IOC_P_NBR));
- }
- if (stat0 & IOC_LOST) {
- printk(" Other PCI errors occurred simultaneously.\n");
- }
-}
-
-void
-lca_machine_check(unsigned long vector, unsigned long la_ptr)
-{
- const char * reason;
- union el_lca el;
-
- el.c = (struct el_common *) la_ptr;
-
- wrmces(rdmces()); /* reset machine check pending flag */
-
- printk(KERN_CRIT "LCA machine check: vector=%#lx pc=%#lx code=%#x\n",
- vector, get_irq_regs()->pc, (unsigned int) el.c->code);
-
- /*
- * The first quadword after the common header always seems to
- * be the machine check reason---don't know why this isn't
- * part of the common header instead. In the case of a long
- * logout frame, the upper 32 bits is the machine check
- * revision level, which we ignore for now.
- */
- switch ((unsigned int) el.c->code) {
- case MCHK_K_TPERR: reason = "tag parity error"; break;
- case MCHK_K_TCPERR: reason = "tag control parity error"; break;
- case MCHK_K_HERR: reason = "access to non-existent memory"; break;
- case MCHK_K_ECC_C: reason = "correctable ECC error"; break;
- case MCHK_K_ECC_NC: reason = "non-correctable ECC error"; break;
- case MCHK_K_CACKSOFT: reason = "MCHK_K_CACKSOFT"; break;
- case MCHK_K_BUGCHECK: reason = "illegal exception in PAL mode"; break;
- case MCHK_K_OS_BUGCHECK: reason = "callsys in kernel mode"; break;
- case MCHK_K_DCPERR: reason = "d-cache parity error"; break;
- case MCHK_K_ICPERR: reason = "i-cache parity error"; break;
- case MCHK_K_SIO_SERR: reason = "SIO SERR occurred on PCI bus"; break;
- case MCHK_K_SIO_IOCHK: reason = "SIO IOCHK occurred on ISA bus"; break;
- case MCHK_K_DCSR: reason = "MCHK_K_DCSR"; break;
- case MCHK_K_UNKNOWN:
- default: reason = "unknown"; break;
- }
-
- switch (el.c->size) {
- case sizeof(struct el_lca_mcheck_short):
- printk(KERN_CRIT
- " Reason: %s (short frame%s, dc_stat=%#lx):\n",
- reason, el.c->retry ? ", retryable" : "",
- el.s->dc_stat);
- if (el.s->esr & ESR_EAV) {
- mem_error(el.s->esr, el.s->ear);
- }
- if (el.s->ioc_stat0 & IOC_ERR) {
- ioc_error(el.s->ioc_stat0, el.s->ioc_stat1);
- }
- break;
-
- case sizeof(struct el_lca_mcheck_long):
- printk(KERN_CRIT " Reason: %s (long frame%s):\n",
- reason, el.c->retry ? ", retryable" : "");
- printk(KERN_CRIT
- " reason: %#lx exc_addr: %#lx dc_stat: %#lx\n",
- el.l->pt[0], el.l->exc_addr, el.l->dc_stat);
- printk(KERN_CRIT " car: %#lx\n", el.l->car);
- if (el.l->esr & ESR_EAV) {
- mem_error(el.l->esr, el.l->ear);
- }
- if (el.l->ioc_stat0 & IOC_ERR) {
- ioc_error(el.l->ioc_stat0, el.l->ioc_stat1);
- }
- break;
-
- default:
- printk(KERN_CRIT " Unknown errorlog size %d\n", el.c->size);
- }
-
- /* Dump the logout area to give all info. */
-#ifdef CONFIG_VERBOSE_MCHECK
- if (alpha_verbose_mcheck > 1) {
- unsigned long * ptr = (unsigned long *) la_ptr;
- long i;
- for (i = 0; i < el.c->size / sizeof(long); i += 2) {
- printk(KERN_CRIT " +%8lx %016lx %016lx\n",
- i*sizeof(long), ptr[i], ptr[i+1]);
- }
- }
-#endif /* CONFIG_VERBOSE_MCHECK */
-}
-
-/*
- * The following routines are needed to support the SPEED changing
- * necessary to successfully manage the thermal problem on the AlphaBook1.
- */
-
-void
-lca_clock_print(void)
-{
- long pmr_reg;
-
- pmr_reg = LCA_READ_PMR;
-
- printk("Status of clock control:\n");
- printk("\tPrimary clock divisor\t0x%lx\n", LCA_GET_PRIMARY(pmr_reg));
- printk("\tOverride clock divisor\t0x%lx\n", LCA_GET_OVERRIDE(pmr_reg));
- printk("\tInterrupt override is %s\n",
- (pmr_reg & LCA_PMR_INTO) ? "on" : "off");
- printk("\tDMA override is %s\n",
- (pmr_reg & LCA_PMR_DMAO) ? "on" : "off");
-
-}
-
-int
-lca_get_clock(void)
-{
- long pmr_reg;
-
- pmr_reg = LCA_READ_PMR;
- return(LCA_GET_PRIMARY(pmr_reg));
-
-}
-
-void
-lca_clock_fiddle(int divisor)
-{
- long pmr_reg;
-
- pmr_reg = LCA_READ_PMR;
- LCA_SET_PRIMARY_CLOCK(pmr_reg, divisor);
- /* lca_norm_clock = divisor; */
- LCA_WRITE_PMR(pmr_reg);
- mb();
-}
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