From patchwork Thu Dec 29 22:12:15 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Herv=C3=A9_Poussineau?= X-Patchwork-Id: 709589 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3tqP7v1zvzz9sR9 for ; Fri, 30 Dec 2016 09:16:11 +1100 (AEDT) Received: from localhost ([::1]:37512 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cMizZ-0006Ib-0r for incoming@patchwork.ozlabs.org; Thu, 29 Dec 2016 17:16:09 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52973) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cMixw-00053c-AE for qemu-devel@nongnu.org; Thu, 29 Dec 2016 17:14:30 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cMixu-0001db-F9 for qemu-devel@nongnu.org; Thu, 29 Dec 2016 17:14:28 -0500 Received: from smtp5-g21.free.fr ([212.27.42.5]:27696) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cMixu-0001ca-1X; Thu, 29 Dec 2016 17:14:26 -0500 Received: from localhost.localdomain (unknown [78.230.185.200]) by smtp5-g21.free.fr (Postfix) with ESMTP id 4CABA5FFA5; Thu, 29 Dec 2016 23:14:21 +0100 (CET) From: =?UTF-8?q?Herv=C3=A9=20Poussineau?= To: qemu-devel@nongnu.org Date: Thu, 29 Dec 2016 23:12:15 +0100 Message-Id: <1483049536-21548-6-git-send-email-hpoussin@reactos.org> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1483049536-21548-1-git-send-email-hpoussin@reactos.org> References: <1483049536-21548-1-git-send-email-hpoussin@reactos.org> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Windows NT kernel [generic] [fuzzy] X-Received-From: 212.27.42.5 Subject: [Qemu-devel] [PATCH 5/6] prep: add IBM RS/6000 7020 (40p) memory controller X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Giancarlo Teodori , Thomas Huth , Alexander Graf , =?UTF-8?q?Herv=C3=A9=20Poussineau?= , qemu-ppc@nongnu.org, David Gibson Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Hervé Poussineau --- default-configs/ppc-softmmu.mak | 1 + hw/ppc/Makefile.objs | 1 + hw/ppc/rs6000_mc.c | 232 ++++++++++++++++++++++++++++++++++++++++ hw/ppc/trace-events | 7 ++ 4 files changed, 241 insertions(+) create mode 100644 hw/ppc/rs6000_mc.c diff --git a/default-configs/ppc-softmmu.mak b/default-configs/ppc-softmmu.mak index d4d0f9b..e567658 100644 --- a/default-configs/ppc-softmmu.mak +++ b/default-configs/ppc-softmmu.mak @@ -47,3 +47,4 @@ CONFIG_LIBDECNUMBER=y # For PReP CONFIG_MC146818RTC=y CONFIG_ISA_TESTDEV=y +CONFIG_RS6000_MC=y diff --git a/hw/ppc/Makefile.objs b/hw/ppc/Makefile.objs index db72297..0012934 100644 --- a/hw/ppc/Makefile.objs +++ b/hw/ppc/Makefile.objs @@ -17,6 +17,7 @@ obj-y += ppc4xx_pci.o # PReP obj-$(CONFIG_PREP) += prep.o obj-$(CONFIG_PREP) += prep_systemio.o +obj-${CONFIG_RS6000_MC} += rs6000_mc.o # OldWorld PowerMac obj-$(CONFIG_MAC) += mac_oldworld.o # NewWorld PowerMac diff --git a/hw/ppc/rs6000_mc.c b/hw/ppc/rs6000_mc.c new file mode 100644 index 0000000..c684421 --- /dev/null +++ b/hw/ppc/rs6000_mc.c @@ -0,0 +1,232 @@ +/* + * QEMU RS/6000 memory controller + * + * Copyright (c) 2016 Hervé Poussineau + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) version 3 or any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include "qemu/osdep.h" +#include "hw/isa/isa.h" +#include "exec/address-spaces.h" +#include "hw/boards.h" +#include "qapi/error.h" +#include "trace.h" + +#define TYPE_RS6000MC "rs6000-mc" +#define RS6000MC_DEVICE(obj) \ + OBJECT_CHECK(RS6000MCState, (obj), TYPE_RS6000MC) + +typedef struct RS6000MCState { + ISADevice parent_obj; + /* see US patent 5,684,979 for details (expired 2001-11-04) */ + uint32_t ram_size; + bool autoconfigure; + MemoryRegion simm[6]; + unsigned int simm_size[6]; + uint32_t end_address[8]; + uint8_t port0820_index; + PortioList portio; +} RS6000MCState; + +/* P0RT 0803 -- SIMM ID Register (32/8 MB) (Read Only) */ + +static uint32_t rs6000mc_port0803_read(void *opaque, uint32_t addr) +{ + RS6000MCState *s = opaque; + uint32_t val = 0; + int socket; + + /* (1 << socket) indicates 32 MB SIMM at given socket */ + for (socket = 0; socket < 6; socket++) { + if (s->simm_size[socket] == 32) { + val |= (1 << socket); + } + } + + trace_rs6000mc_id_read(addr, val); + return val; +} + +/* PORT 0804 -- SIMM Presence Register (Read Only) */ + +static uint32_t rs6000mc_port0804_read(void *opaque, uint32_t addr) +{ + RS6000MCState *s = opaque; + uint32_t val = 0xff; + int socket; + + /* (1 << socket) indicates SIMM absence at given socket */ + for (socket = 0; socket < 6; socket++) { + if (s->simm_size[socket]) { + val &= ~(1 << socket); + } + } + s->port0820_index = 0; + + trace_rs6000mc_presence_read(addr, val); + return val; +} + +/* Memory Controller Size Programming Register */ + +static uint32_t rs6000mc_port0820_read(void *opaque, uint32_t addr) +{ + RS6000MCState *s = opaque; + uint32_t val = s->end_address[s->port0820_index] & 0x1f; + s->port0820_index = (s->port0820_index + 1) & 7; + trace_rs6000mc_size_read(addr, val); + return val; +} + +static void rs6000mc_port0820_write(void *opaque, uint32_t addr, uint32_t val) +{ + RS6000MCState *s = opaque; + uint8_t socket = val >> 5; + uint32_t end_address = val & 0x1f; + + trace_rs6000mc_size_write(addr, val); + s->end_address[socket] = end_address; + if (socket > 0 && socket < 7) { + if (s->simm_size[socket - 1]) { + uint32_t size; + uint32_t start_address = 0; + if (socket > 1) { + start_address = s->end_address[socket - 1]; + } + + size = end_address - start_address; + memory_region_set_enabled(&s->simm[socket - 1], size != 0); + memory_region_set_address(&s->simm[socket - 1], + start_address * 8 * 1024 * 1024); + } + } +} + +/* Read Memory Parity Error */ + +enum { + PORT0841_NO_ERROR_DETECTED = 0x01, +}; + +static uint32_t rs6000mc_port0841_read(void *opaque, uint32_t addr) +{ + uint32_t val = PORT0841_NO_ERROR_DETECTED; + trace_rs6000mc_parity_read(addr, val); + return val; +} + +static const MemoryRegionPortio rs6000mc_port_list[] = { + { 0x803, 1, 1, .read = rs6000mc_port0803_read }, + { 0x804, 1, 1, .read = rs6000mc_port0804_read }, + { 0x820, 1, 1, .read = rs6000mc_port0820_read, + .write = rs6000mc_port0820_write, }, + { 0x841, 1, 1, .read = rs6000mc_port0841_read }, + PORTIO_END_OF_LIST() +}; + +static void rs6000mc_realize(DeviceState *dev, Error **errp) +{ + RS6000MCState *s = RS6000MC_DEVICE(dev); + int socket = 0; + unsigned int ram_size = s->ram_size / (1024 * 1024); + + while (socket < 6) { + if (ram_size >= 64) { + s->simm_size[socket] = 32; + s->simm_size[socket + 1] = 32; + ram_size -= 64; + } else if (ram_size >= 16) { + s->simm_size[socket] = 8; + s->simm_size[socket + 1] = 8; + ram_size -= 16; + } else { + /* Not enough memory */ + break; + } + socket += 2; + } + + for (socket = 0; socket < 6; socket++) { + if (s->simm_size[socket]) { + char name[] = "simm.?"; + name[5] = socket + '0'; + memory_region_allocate_system_memory(&s->simm[socket], OBJECT(dev), + name, s->simm_size[socket] + * 1024 * 1024); + memory_region_add_subregion_overlap(get_system_memory(), 0, + &s->simm[socket], socket); + } + } + if (ram_size) { + /* unable to push all requested RAM in SIMMs */ + error_setg(errp, "RAM size incompatible with this board. " + "Try again with something else, like %d MB", + s->ram_size / 1024 / 1024 - ram_size); + return; + } + + if (s->autoconfigure) { + uint32_t start_address = 0; + for (socket = 0; socket < 6; socket++) { + if (s->simm_size[socket]) { + memory_region_set_enabled(&s->simm[socket], true); + memory_region_set_address(&s->simm[socket], start_address); + start_address += memory_region_size(&s->simm[socket]); + } + } + } + + isa_register_portio_list(ISA_DEVICE(dev), &s->portio, 0x0, + rs6000mc_port_list, s, "rs6000mc"); +} + +static const VMStateDescription vmstate_rs6000mc = { + .name = "rs6000-mc", + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT8(port0820_index, RS6000MCState), + VMSTATE_END_OF_LIST() + }, +}; + +static Property rs6000mc_properties[] = { + DEFINE_PROP_UINT32("ram-size", RS6000MCState, ram_size, 0), + DEFINE_PROP_BOOL("auto-configure", RS6000MCState, autoconfigure, true), + DEFINE_PROP_END_OF_LIST() +}; + +static void rs6000mc_class_initfn(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->realize = rs6000mc_realize; + dc->vmsd = &vmstate_rs6000mc; + dc->props = rs6000mc_properties; +} + +static const TypeInfo rs6000mc_info = { + .name = TYPE_RS6000MC, + .parent = TYPE_ISA_DEVICE, + .instance_size = sizeof(RS6000MCState), + .class_init = rs6000mc_class_initfn, +}; + +static void rs6000mc_types(void) +{ + type_register_static(&rs6000mc_info); +} + +type_init(rs6000mc_types) diff --git a/hw/ppc/trace-events b/hw/ppc/trace-events index 2ba6166..42b8ec0 100644 --- a/hw/ppc/trace-events +++ b/hw/ppc/trace-events @@ -78,3 +78,10 @@ prep_io_800_readb(uint32_t addr, uint32_t retval) "0x%08" PRIx32 " <= 0x%02" PRI # hw/ppc/prep_systemio.c prep_systemio_read(uint32_t addr, uint32_t val) "read addr=%x val=%x" prep_systemio_write(uint32_t addr, uint32_t val) "write addr=%x val=%x" + +# hw/ppc/rs6000_mc.c +rs6000mc_id_read(uint32_t addr, uint32_t val) "read addr=%x val=%x" +rs6000mc_presence_read(uint32_t addr, uint32_t val) "read addr=%x val=%x" +rs6000mc_size_read(uint32_t addr, uint32_t val) "read addr=%x val=%x" +rs6000mc_size_write(uint32_t addr, uint32_t val) "write addr=%x val=%x" +rs6000mc_parity_read(uint32_t addr, uint32_t val) "read addr=%x val=%x"