[src/trunk]: src/sys Make VAXstation 4000 TURBOchannel adaptor work.

[flxd <flxd%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/57e01c47c9c1
branches:  trunk
changeset: 354282:57e01c47c9c1
user:      flxd <flxd%NetBSD.org@localhost>
date:      Fri Jun 09 17:55:18 2017 +0000

description:
Make VAXstation 4000 TURBOchannel adaptor work.
PIO and IRQ tested on VS4000/60 and /96 with TC-USB (slhci) and PMAD-AA (le).
DMA is untested.
vax needs space to be mapped out, so memory space is pre-mapped for TC option
drivers not bus_space'ified yet, also providing custom bus_space methods for
this kludge.

diffstat:

 sys/arch/alpha/tc/tcasic.c  |    6 +-
 sys/arch/pmax/tc/tcbus.c    |    6 +-
 sys/arch/vax/conf/files.vax |    6 +-
 sys/arch/vax/vsa/tc_vsbus.c |  431 ++++++++++++++++++++++++++++++++++++-------
 sys/dev/tc/tc.c             |   20 +-
 sys/dev/tc/tcvar.h          |    4 +-
 6 files changed, 381 insertions(+), 92 deletions(-)

diffs (truncated from 643 to 300 lines):

diff -r 3ac464759e4f -r 57e01c47c9c1 sys/arch/alpha/tc/tcasic.c
--- a/sys/arch/alpha/tc/tcasic.c        Fri Jun 09 17:36:29 2017 +0000
+++ b/sys/arch/alpha/tc/tcasic.c        Fri Jun 09 17:55:18 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: tcasic.c,v 1.45 2016/12/12 17:03:40 flxd Exp $ */
+/* $NetBSD: tcasic.c,v 1.46 2017/06/09 17:55:18 flxd Exp $ */
 
 /*
  * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
@@ -32,7 +32,7 @@
 
 #include <sys/cdefs.h>                 /* RCS ID & Copyright macro defns */
 
-__KERNEL_RCSID(0, "$NetBSD: tcasic.c,v 1.45 2016/12/12 17:03:40 flxd Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tcasic.c,v 1.46 2017/06/09 17:55:18 flxd Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -222,7 +222,7 @@
        char tcname[TC_ROM_LLEN];
        int i;
 
-       if (tc_badaddr(tcaddr) || (tc_checkslot(tcaddr, tcname) == 0))
+       if (tc_badaddr(tcaddr) || (tc_checkslot(tcaddr, tcname, NULL) == 0))
                return (EINVAL);
 
        for (i = 0; i < sizeof(cnboards) / sizeof(cnboards[0]); i++)
diff -r 3ac464759e4f -r 57e01c47c9c1 sys/arch/pmax/tc/tcbus.c
--- a/sys/arch/pmax/tc/tcbus.c  Fri Jun 09 17:36:29 2017 +0000
+++ b/sys/arch/pmax/tc/tcbus.c  Fri Jun 09 17:55:18 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: tcbus.c,v 1.32 2016/12/12 17:03:41 flxd Exp $  */
+/*     $NetBSD: tcbus.c,v 1.33 2017/06/09 17:55:18 flxd Exp $  */
 
 /*-
  * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tcbus.c,v 1.32 2016/12/12 17:03:41 flxd Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tcbus.c,v 1.33 2017/06/09 17:55:18 flxd Exp $");
 
 #define        _PMAX_BUS_DMA_PRIVATE
 /*
@@ -221,7 +221,7 @@
        int i;
 
        tcaddr = promcall(callv->_slot_address, slotno);
-       if (tc_badaddr(tcaddr) || tc_checkslot(tcaddr, tcname) == 0)
+       if (tc_badaddr(tcaddr) || tc_checkslot(tcaddr, tcname, NULL) == 0)
                panic("TC console designated by PROM does not exist!?");
 
        for (i = 0; i < __arraycount(cnboards); i++) {
diff -r 3ac464759e4f -r 57e01c47c9c1 sys/arch/vax/conf/files.vax
--- a/sys/arch/vax/conf/files.vax       Fri Jun 09 17:36:29 2017 +0000
+++ b/sys/arch/vax/conf/files.vax       Fri Jun 09 17:55:18 2017 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: files.vax,v 1.120 2015/07/05 03:06:27 matt Exp $
+#      $NetBSD: files.vax,v 1.121 2017/06/09 17:55:18 flxd Exp $
 #
 # new style config file for vax architecture
 #
@@ -110,8 +110,8 @@
 # TurboCHANNEL bus support and device drivers
 include "dev/tc/files.tc"
 
-attach tc at vsbus with tcbus
-file   arch/vax/vsa/tc_vsbus.c         tcbus
+attach tc at vsbus with tc_vsbus
+file   arch/vax/vsa/tc_vsbus.c         tc_vsbus
 
 attach uba at mainbus with uba_mainbus
 file   arch/vax/uba/uba_mainbus.c      uba_mainbus
diff -r 3ac464759e4f -r 57e01c47c9c1 sys/arch/vax/vsa/tc_vsbus.c
--- a/sys/arch/vax/vsa/tc_vsbus.c       Fri Jun 09 17:36:29 2017 +0000
+++ b/sys/arch/vax/vsa/tc_vsbus.c       Fri Jun 09 17:55:18 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: tc_vsbus.c,v 1.7 2011/06/05 16:12:50 christos Exp $    */
+/*     $NetBSD: tc_vsbus.c,v 1.8 2017/06/09 17:55:18 flxd Exp $        */
 /*-
  * Copyright (c) 2008 The NetBSD Foundation, Inc.
  * All rights reserved.
@@ -28,120 +28,407 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: tc_vsbus.c,v 1.8 2017/06/09 17:55:18 flxd Exp $");
+
 #include <sys/param.h>
 #include <sys/bus.h>
 #include <sys/cpu.h>
 #include <sys/device.h>
 
+#include <machine/cpu.h>
 #include <machine/pte.h>
 #include <machine/scb.h>
+#include <machine/sid.h>
 #include <machine/vsbus.h>
+
 #include <dev/tc/tcvar.h>
 
-static int tcbus_match(device_t, cfdata_t, void *);
-static void tcbus_attach(device_t, device_t, void *);
+#define NSLOTS 1
 
-struct tcbus_softc {
+struct tc_vsbus_softc {
        struct tc_softc sc_tc;
-       struct tc_slotdesc sc_slots[1];
+       struct tc_slotdesc sc_slots[NSLOTS];
        struct vax_bus_dma_tag sc_dmatag;
        struct vax_sgmap sc_sgmap;
        struct evcnt sc_ev;
-       bus_space_handle_t sc_memh;
+       int (*sc_intr_func)(void *);
+       void *sc_intr_arg;
+       bus_space_tag_t sc_bst;
+       bus_space_handle_t sc_bsh_csr;
+       int sc_cvec;
+};
+
+static int tc_vsbus_match(device_t, cfdata_t, void *);
+static void tc_vsbus_attach(device_t, device_t, void *);
+
+static int tc_vsbus_dma_init(device_t);
+static bus_dma_tag_t tc_vsbus_get_dma_tag(int);
+
+static void tc_vsbus_intr(void *);
+static void tc_vsbus_intr_establish(device_t, void *, int, int (*)(void *),
+    void *);
+static void tc_vsbus_intr_disestablish(device_t, void *);
+static const struct evcnt *tc_vsbus_intr_evcnt(device_t, void *);
+
+static int vax_tc_bus_space_map(void *, bus_addr_t, bus_size_t, int,
+    bus_space_handle_t *, int);
+static int vax_tc_bus_space_subregion(void *, bus_space_handle_t, bus_size_t,
+    bus_size_t, bus_space_handle_t *);
+static void vax_tc_bus_space_unmap(void *, bus_space_handle_t, bus_size_t, int);
+static int vax_tc_bus_space_alloc(void *, bus_addr_t, bus_addr_t, bus_size_t,
+    bus_size_t, bus_size_t, int, bus_addr_t *, bus_space_handle_t *);
+static void vax_tc_bus_space_free(void *, bus_space_handle_t, bus_size_t);
+static paddr_t vax_tc_bus_space_mmap(void *, bus_addr_t, off_t, int, int);
+
+CFATTACH_DECL_NEW(tc_vsbus, sizeof(struct tc_vsbus_softc),
+    tc_vsbus_match, tc_vsbus_attach, 0, 0);
+
+static bus_dma_tag_t tc_vsbus_dmat;
+
+struct vax_bus_space vax_tc_bus_space = {
+       NULL,
+       vax_tc_bus_space_map,
+       vax_tc_bus_space_unmap,
+       vax_tc_bus_space_subregion,
+       vax_tc_bus_space_alloc,
+       vax_tc_bus_space_free,
+       vax_tc_bus_space_mmap,
 };
 
-static bus_dma_tag_t tcbus_dmat;
+/*
+ * taken from KA46 System Board Specification, KA46-0-DBF, Rev. X.02,
+ * 10 October 1990
+ */
+#define KA46_BWF0                      0x20080014
+#define   KA46_BWF0_ADP                        __BIT(31)
+#define KA46_BWF0_SZ                   4
+
+/*
+ * taken from KA49 Processor Module Specification V 1.1, 20 August 1992
+ */
+#define KA49_CFG                       0x25800000
+#define   KA49_CFG_BA                  __BIT(0)
+#define KA49_CFG_SZ                    2
 
-CFATTACH_DECL_NEW(tcbus, sizeof(struct tcbus_softc),
-    tcbus_match, tcbus_attach, 0, 0);
+/*
+ * taken from Pmariah TURBOchannel Adapter Specification, 29 November 1991
+ */
+#define KA4x_TCA_BASE                  0x30000000
+#define KA4x_TCA_DIAG_TRIG             (KA4x_TCA_BASE + 0x4000000)
+#define KA4x_TCA_MAP_CHK_SEQ           (KA4x_TCA_BASE + 0x4800000)
+#define KA4x_TCA_FIFO_DIAG             (KA4x_TCA_BASE + 0x5000000)
+#define KA4x_TCA_SGMAP                 (KA4x_TCA_BASE + 0x5800000)
+#define KA4x_TCA_DIAG_ROM              (KA4x_TCA_BASE + 0x6000000)
+#define KA4x_TCA_CSR                   (KA4x_TCA_BASE + 0x6800000)
+#define   KA4x_TCA_CSR_BLK_SZ          __BITS(0, 2)    /* 0x00007 RW   */
+#define   KA4x_TCA_CSR_SPARE           __BIT(3)        /* 0x00008 RW   */
+#define   KA4x_TCA_CSR_BAD_PAR         __BITS(4, 7)    /* 0x000f0 RW   */
+#define   KA4x_TCA_CSR_RST_TC          __BIT(8)        /* 0x00100 RW   */
+#define   KA4x_TCA_CSR_EN_MAP          __BIT(9)        /* 0x00200 RW   */
+#define   KA4x_TCA_CSR_INVAL_REF       __BIT(10)       /* 0x00400 RW1C */
+#define   KA4x_TCA_CSR_TC_TMO          __BIT(11)       /* 0x00800 RW   */
+#define   KA4x_TCA_CSR_EN_TC_IRQ       __BIT(12)       /* 0x01000 RW   */
+#define   KA4x_TCA_CSR_TC_IRQ          __BIT(13)       /* 0x02000 R    */
+#define   KA4x_TCA_CSR_ERR             __BIT(14)       /* 0x04000 RW1C */
+#define   KA4x_TCA_CSR_ALT_CYC_ST      __BIT(15)       /* 0x08000 RW   */
+#define   KA4x_TCA_CSR_EN_PAR          __BIT(16)       /* 0x10000 RW   */
+#define   KA4x_TCA_CSR_FIFO_EMPTY      __BIT(17)       /* 0x20000 R    */
+#define KA4x_TCA_CSR_SZ                        4
 
-static bus_dma_tag_t
-tcbus_get_dma_tag(int slotno)
+static int
+tc_vsbus_match(device_t parent, cfdata_t cfdata, void *aux)
 {
-       return tcbus_dmat;
+       struct vsbus_attach_args * const va = aux;
+       uint32_t *csr;
+       bus_space_tag_t bst = va->va_memt;
+       bus_space_handle_t bsh;
+       int found, rc;
+
+       if (va->va_paddr != KA4x_TCA_CSR)
+               return 0;
+
+       /* Bus adaptor present? */
+       switch (vax_boardtype) {
+       case VAX_BTYP_46:
+               if (bus_space_map(bst, KA46_BWF0, KA46_BWF0_SZ, 0, &bsh))
+                       return 0;
+               found = ((bus_space_read_4(bst, bsh, 0) & KA46_BWF0_ADP) != 0);
+               bus_space_unmap(bst, bsh, KA46_BWF0_SZ);
+               /*
+                * On VS4000/60, although interrupting on a real vector, fool
+                * vsbus interrupt, as no interrupt bit will be set in
+                * vsbus_softc's sc_intreq for TC adaptor.
+                */
+               rc = 20;
+               break;
+       case VAX_BTYP_49:
+               if (bus_space_map(bst, KA49_CFG, KA49_CFG_SZ, 0, &bsh))
+                       return 0;
+               found = ((bus_space_read_2(bst, bsh, 0) & KA49_CFG_BA) != 0);
+               bus_space_unmap(bst, bsh, KA49_CFG_SZ);
+               rc = 10;
+               break;
+       default:
+               return 0;
+       }
+       if (!found)
+               return 0;
+
+       /* XXX Assume a found bus adaptor is the TC bus adaptor. */
+
+       /* Force interrupt. */
+       csr = (uint32_t *)va->va_addr;
+       *csr |= KA4x_TCA_CSR_TC_TMO;
+       DELAY(10000);
+       *csr &= ~KA4x_TCA_CSR_TC_TMO;
+       DELAY(10000);
+
+       return rc;
 }
 
+#define INIT_SLOTSZ    1
+
 static void
-tcbus_intr_establish(device_t dv, void *cookie, int level,
-       int (*func)(void *), void *arg)
+tc_vsbus_attach(device_t parent, device_t self, void *aux)
 {
-       struct tcbus_softc * const sc = cookie;
+       struct tcbus_attach_args tba;
+       struct vsbus_attach_args * const va = aux;
+       struct tc_vsbus_softc * const sc = device_private(self);
+       struct tc_rommap *rommap;
+       bus_space_tag_t bst = va->va_memt;
+       bus_space_handle_t bsh_csr, bsh_slot;
+       const bus_size_t slotb = 4194304;
+       uint32_t csr;
+       int error, slotsz;
+
+       sc->sc_cvec = va->va_cvec;
+
+       error = bus_space_map(bst, KA4x_TCA_CSR, KA4x_TCA_CSR_SZ, 0, &bsh_csr);
+       if (error) {
+               aprint_normal(": failed to map TCA CSR: %d\n", error);
+               return;
+       }
+       sc->sc_bst = bst;
+       sc->sc_bsh_csr = bsh_csr;
+
+       /* Deassert TC option reset and clean up. */
+       csr = bus_space_read_4(bst, bsh_csr, 0);
+       csr &= ~(KA4x_TCA_CSR_TC_TMO | KA4x_TCA_CSR_RST_TC);
+       csr |= KA4x_TCA_CSR_ERR | KA4x_TCA_CSR_INVAL_REF;
+       bus_space_write_4(bst, bsh_csr, 0, csr);
 
-       scb_vecalloc(0x51, (void (*)(void *)) func, arg, SCB_ISTACK,
-           &sc->sc_ev);
+       /*
+        * Map initial number of "slots" (4 MB each) to read the option ROM
+        * header.
+        */
+       error = bus_space_map(bst, KA4x_TCA_BASE, INIT_SLOTSZ * slotb,
+           BUS_SPACE_MAP_LINEAR, &bsh_slot);
+       if (error) {