diff options
Diffstat (limited to 'arch/cris/arch-v32/mach-fs')
| -rw-r--r-- | arch/cris/arch-v32/mach-fs/Kconfig | 198 | ||||
| -rw-r--r-- | arch/cris/arch-v32/mach-fs/Makefile | 8 | ||||
| -rw-r--r-- | arch/cris/arch-v32/mach-fs/arbiter.c | 405 | ||||
| -rw-r--r-- | arch/cris/arch-v32/mach-fs/dma.c | 229 | ||||
| -rw-r--r-- | arch/cris/arch-v32/mach-fs/dram_init.S | 117 | ||||
| -rw-r--r-- | arch/cris/arch-v32/mach-fs/hw_settings.S | 71 | ||||
| -rw-r--r-- | arch/cris/arch-v32/mach-fs/pinmux.c | 328 |
7 files changed, 0 insertions, 1356 deletions
diff --git a/arch/cris/arch-v32/mach-fs/Kconfig b/arch/cris/arch-v32/mach-fs/Kconfig deleted file mode 100644 index 743ba3bcbaec..000000000000 --- a/arch/cris/arch-v32/mach-fs/Kconfig +++ /dev/null @@ -1,198 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -if ETRAXFS - -menu "ETRAX FS options" - depends on ETRAXFS - -config ETRAX_DRAM_VIRTUAL_BASE - hex - depends on ETRAX_ARCH_V32 - default "c0000000" - -config ETRAX_SERIAL_PORTS - int - default 4 - -config ETRAX_MEM_GRP1_CONFIG - hex "MEM_GRP1_CONFIG" - depends on ETRAX_ARCH_V32 - default "4044a" - help - Waitstates for flash. The default value is suitable for the - standard flashes used in axis products (120 ns). - -config ETRAX_MEM_GRP2_CONFIG - hex "MEM_GRP2_CONFIG" - depends on ETRAX_ARCH_V32 - default "0" - help - Waitstates for SRAM. 0 is a good choice for most Axis products. - -config ETRAX_MEM_GRP3_CONFIG - hex "MEM_GRP3_CONFIG" - depends on ETRAX_ARCH_V32 - default "0" - help - Waitstates for CSP0-3. 0 is a good choice for most Axis products. - It may need to be changed if external devices such as extra - register-mapped LEDs are used. - -config ETRAX_MEM_GRP4_CONFIG - hex "MEM_GRP4_CONFIG" - depends on ETRAX_ARCH_V32 - default "0" - help - Waitstates for CSP4-6. 0 is a good choice for most Axis products. - -config ETRAX_SDRAM_GRP0_CONFIG - hex "SDRAM_GRP0_CONFIG" - depends on ETRAX_ARCH_V32 - default "336" - help - SDRAM configuration for group 0. The value depends on the - hardware configuration. The default value is suitable - for 32 MB organized as two 16 bits chips (e.g. Axis - part number 18550) connected as one 32 bit device (i.e. in - the same group). - -config ETRAX_SDRAM_GRP1_CONFIG - hex "SDRAM_GRP1_CONFIG" - depends on ETRAX_ARCH_V32 - default "0" - help - SDRAM configuration for group 1. The default value is 0 - because group 1 is not used in the default configuration, - described in the help for SDRAM_GRP0_CONFIG. - -config ETRAX_SDRAM_TIMING - hex "SDRAM_TIMING" - depends on ETRAX_ARCH_V32 - default "104a" - help - SDRAM timing parameters. The default value is ok for - most hardwares but large SDRAMs may require a faster - refresh (a.k.a 8K refresh). The default value implies - 100MHz clock and SDR mode. - -config ETRAX_SDRAM_COMMAND - hex "SDRAM_COMMAND" - depends on ETRAX_ARCH_V32 - default "0" - help - SDRAM command. Should be 0 unless you really know what - you are doing (may be != 0 for unusual address line - mappings such as in a MCM).. - -config ETRAX_DEF_GIO_PA_OE - hex "GIO_PA_OE" - depends on ETRAX_ARCH_V32 - default "1c" - help - Configures the direction of general port A bits. 1 is out, 0 is in. - This is often totally different depending on the product used. - There are some guidelines though - if you know that only LED's are - connected to port PA, then they are usually connected to bits 2-4 - and you can therefore use 1c. On other boards which don't have the - LED's at the general ports, these bits are used for all kinds of - stuff. If you don't know what to use, it is always safe to put all - as inputs, although floating inputs isn't good. - -config ETRAX_DEF_GIO_PA_OUT - hex "GIO_PA_OUT" - depends on ETRAX_ARCH_V32 - default "00" - help - Configures the initial data for the general port A bits. Most - products should use 00 here. - -config ETRAX_DEF_GIO_PB_OE - hex "GIO_PB_OE" - depends on ETRAX_ARCH_V32 - default "00000" - help - Configures the direction of general port B bits. 1 is out, 0 is in. - This is often totally different depending on the product used. - There are some guidelines though - if you know that only LED's are - connected to port PA, then they are usually connected to bits 2-4 - and you can therefore use 1c. On other boards which don't have the - LED's at the general ports, these bits are used for all kinds of - stuff. If you don't know what to use, it is always safe to put all - as inputs, although floating inputs isn't good. - -config ETRAX_DEF_GIO_PB_OUT - hex "GIO_PB_OUT" - depends on ETRAX_ARCH_V32 - default "00000" - help - Configures the initial data for the general port B bits. Most - products should use 00000 here. - -config ETRAX_DEF_GIO_PC_OE - hex "GIO_PC_OE" - depends on ETRAX_ARCH_V32 - default "00000" - help - Configures the direction of general port C bits. 1 is out, 0 is in. - This is often totally different depending on the product used. - There are some guidelines though - if you know that only LED's are - connected to port PA, then they are usually connected to bits 2-4 - and you can therefore use 1c. On other boards which don't have the - LED's at the general ports, these bits are used for all kinds of - stuff. If you don't know what to use, it is always safe to put all - as inputs, although floating inputs isn't good. - -config ETRAX_DEF_GIO_PC_OUT - hex "GIO_PC_OUT" - depends on ETRAX_ARCH_V32 - default "00000" - help - Configures the initial data for the general port C bits. Most - products should use 00000 here. - -config ETRAX_DEF_GIO_PD_OE - hex "GIO_PD_OE" - depends on ETRAX_ARCH_V32 - default "00000" - help - Configures the direction of general port D bits. 1 is out, 0 is in. - This is often totally different depending on the product used. - There are some guidelines though - if you know that only LED's are - connected to port PA, then they are usually connected to bits 2-4 - and you can therefore use 1c. On other boards which don't have the - LED's at the general ports, these bits are used for all kinds of - stuff. If you don't know what to use, it is always safe to put all - as inputs, although floating inputs isn't good. - -config ETRAX_DEF_GIO_PD_OUT - hex "GIO_PD_OUT" - depends on ETRAX_ARCH_V32 - default "00000" - help - Configures the initial data for the general port D bits. Most - products should use 00000 here. - -config ETRAX_DEF_GIO_PE_OE - hex "GIO_PE_OE" - depends on ETRAX_ARCH_V32 - default "00000" - help - Configures the direction of general port E bits. 1 is out, 0 is in. - This is often totally different depending on the product used. - There are some guidelines though - if you know that only LED's are - connected to port PA, then they are usually connected to bits 2-4 - and you can therefore use 1c. On other boards which don't have the - LED's at the general ports, these bits are used for all kinds of - stuff. If you don't know what to use, it is always safe to put all - as inputs, although floating inputs isn't good. - -config ETRAX_DEF_GIO_PE_OUT - hex "GIO_PE_OUT" - depends on ETRAX_ARCH_V32 - default "00000" - help - Configures the initial data for the general port E bits. Most - products should use 00000 here. - -endmenu - -endif diff --git a/arch/cris/arch-v32/mach-fs/Makefile b/arch/cris/arch-v32/mach-fs/Makefile deleted file mode 100644 index 0cc6eebacbed..000000000000 --- a/arch/cris/arch-v32/mach-fs/Makefile +++ /dev/null @@ -1,8 +0,0 @@ -# -# Makefile for the linux kernel. -# - -obj-y := dma.o pinmux.o arbiter.o - -clean: - diff --git a/arch/cris/arch-v32/mach-fs/arbiter.c b/arch/cris/arch-v32/mach-fs/arbiter.c deleted file mode 100644 index c4750d97e46c..000000000000 --- a/arch/cris/arch-v32/mach-fs/arbiter.c +++ /dev/null @@ -1,405 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Memory arbiter functions. Allocates bandwidth through the - * arbiter and sets up arbiter breakpoints. - * - * The algorithm first assigns slots to the clients that has specified - * bandwidth (e.g. ethernet) and then the remaining slots are divided - * on all the active clients. - * - * Copyright (c) 2004-2007 Axis Communications AB. - */ - -#include <hwregs/reg_map.h> -#include <hwregs/reg_rdwr.h> -#include <hwregs/marb_defs.h> -#include <arbiter.h> -#include <hwregs/intr_vect.h> -#include <linux/interrupt.h> -#include <linux/signal.h> -#include <linux/errno.h> -#include <linux/spinlock.h> -#include <asm/io.h> -#include <asm/irq_regs.h> - -struct crisv32_watch_entry { - unsigned long instance; - watch_callback *cb; - unsigned long start; - unsigned long end; - int used; -}; - -#define NUMBER_OF_BP 4 -#define NBR_OF_CLIENTS 14 -#define NBR_OF_SLOTS 64 -#define SDRAM_BANDWIDTH 100000000 /* Some kind of expected value */ -#define INTMEM_BANDWIDTH 400000000 -#define NBR_OF_REGIONS 2 - -static struct crisv32_watch_entry watches[NUMBER_OF_BP] = { - {regi_marb_bp0}, - {regi_marb_bp1}, - {regi_marb_bp2}, - {regi_marb_bp3} -}; - -static u8 requested_slots[NBR_OF_REGIONS][NBR_OF_CLIENTS]; -static u8 active_clients[NBR_OF_REGIONS][NBR_OF_CLIENTS]; -static int max_bandwidth[NBR_OF_REGIONS] = - { SDRAM_BANDWIDTH, INTMEM_BANDWIDTH }; - -DEFINE_SPINLOCK(arbiter_lock); - -static irqreturn_t crisv32_arbiter_irq(int irq, void *dev_id); - -/* - * "I'm the arbiter, I know the score. - * From square one I'll be watching all 64." - * (memory arbiter slots, that is) - * - * Or in other words: - * Program the memory arbiter slots for "region" according to what's - * in requested_slots[] and active_clients[], while minimizing - * latency. A caller may pass a non-zero positive amount for - * "unused_slots", which must then be the unallocated, remaining - * number of slots, free to hand out to any client. - */ - -static void crisv32_arbiter_config(int region, int unused_slots) -{ - int slot; - int client; - int interval = 0; - - /* - * This vector corresponds to the hardware arbiter slots (see - * the hardware documentation for semantics). We initialize - * each slot with a suitable sentinel value outside the valid - * range {0 .. NBR_OF_CLIENTS - 1} and replace them with - * client indexes. Then it's fed to the hardware. - */ - s8 val[NBR_OF_SLOTS]; - - for (slot = 0; slot < NBR_OF_SLOTS; slot++) - val[slot] = -1; - - for (client = 0; client < NBR_OF_CLIENTS; client++) { - int pos; - /* Allocate the requested non-zero number of slots, but - * also give clients with zero-requests one slot each - * while stocks last. We do the latter here, in client - * order. This makes sure zero-request clients are the - * first to get to any spare slots, else those slots - * could, when bandwidth is allocated close to the limit, - * all be allocated to low-index non-zero-request clients - * in the default-fill loop below. Another positive but - * secondary effect is a somewhat better spread of the - * zero-bandwidth clients in the vector, avoiding some of - * the latency that could otherwise be caused by the - * partitioning of non-zero-bandwidth clients at low - * indexes and zero-bandwidth clients at high - * indexes. (Note that this spreading can only affect the - * unallocated bandwidth.) All the above only matters for - * memory-intensive situations, of course. - */ - if (!requested_slots[region][client]) { - /* - * Skip inactive clients. Also skip zero-slot - * allocations in this pass when there are no known - * free slots. - */ - if (!active_clients[region][client] - || unused_slots <= 0) - continue; - - unused_slots--; - - /* Only allocate one slot for this client. */ - interval = NBR_OF_SLOTS; - } else - interval = - NBR_OF_SLOTS / requested_slots[region][client]; - - pos = 0; - while (pos < NBR_OF_SLOTS) { - if (val[pos] >= 0) - pos++; - else { - val[pos] = client; - pos += interval; - } - } - } - - client = 0; - for (slot = 0; slot < NBR_OF_SLOTS; slot++) { - /* - * Allocate remaining slots in round-robin - * client-number order for active clients. For this - * pass, we ignore requested bandwidth and previous - * allocations. - */ - if (val[slot] < 0) { - int first = client; - while (!active_clients[region][client]) { - client = (client + 1) % NBR_OF_CLIENTS; - if (client == first) - break; - } - val[slot] = client; - client = (client + 1) % NBR_OF_CLIENTS; - } - if (region == EXT_REGION) - REG_WR_INT_VECT(marb, regi_marb, rw_ext_slots, slot, - val[slot]); - else if (region == INT_REGION) - REG_WR_INT_VECT(marb, regi_marb, rw_int_slots, slot, - val[slot]); - } -} - -extern char _stext[], _etext[]; - -static void crisv32_arbiter_init(void) -{ - static int initialized; - - if (initialized) - return; - - initialized = 1; - - /* - * CPU caches are always set to active, but with zero - * bandwidth allocated. It should be ok to allocate zero - * bandwidth for the caches, because DMA for other channels - * will supposedly finish, once their programmed amount is - * done, and then the caches will get access according to the - * "fixed scheme" for unclaimed slots. Though, if for some - * use-case somewhere, there's a maximum CPU latency for - * e.g. some interrupt, we have to start allocating specific - * bandwidth for the CPU caches too. - */ - active_clients[EXT_REGION][10] = active_clients[EXT_REGION][11] = 1; - crisv32_arbiter_config(EXT_REGION, 0); - crisv32_arbiter_config(INT_REGION, 0); - - if (request_irq(MEMARB_INTR_VECT, crisv32_arbiter_irq, 0, - "arbiter", NULL)) - printk(KERN_ERR "Couldn't allocate arbiter IRQ\n"); - -#ifndef CONFIG_ETRAX_KGDB - /* Global watch for writes to kernel text segment. */ - crisv32_arbiter_watch(virt_to_phys(_stext), _etext - _stext, - arbiter_all_clients, arbiter_all_write, NULL); -#endif -} - -/* Main entry for bandwidth allocation. */ - -int crisv32_arbiter_allocate_bandwidth(int client, int region, - unsigned long bandwidth) -{ - int i; - int total_assigned = 0; - int total_clients = 0; - int req; - - crisv32_arbiter_init(); - - for (i = 0; i < NBR_OF_CLIENTS; i++) { - total_assigned += requested_slots[region][i]; - total_clients += active_clients[region][i]; - } - - /* Avoid division by 0 for 0-bandwidth requests. */ - req = bandwidth == 0 - ? 0 : NBR_OF_SLOTS / (max_bandwidth[region] / bandwidth); - - /* - * We make sure that there are enough slots only for non-zero - * requests. Requesting 0 bandwidth *may* allocate slots, - * though if all bandwidth is allocated, such a client won't - * get any and will have to rely on getting memory access - * according to the fixed scheme that's the default when one - * of the slot-allocated clients doesn't claim their slot. - */ - if (total_assigned + req > NBR_OF_SLOTS) - return -ENOMEM; - - active_clients[region][client] = 1; - requested_slots[region][client] = req; - crisv32_arbiter_config(region, NBR_OF_SLOTS - total_assigned); - - return 0; -} - -/* - * Main entry for bandwidth deallocation. - * - * Strictly speaking, for a somewhat constant set of clients where - * each client gets a constant bandwidth and is just enabled or - * disabled (somewhat dynamically), no action is necessary here to - * avoid starvation for non-zero-allocation clients, as the allocated - * slots will just be unused. However, handing out those unused slots - * to active clients avoids needless latency if the "fixed scheme" - * would give unclaimed slots to an eager low-index client. - */ - -void crisv32_arbiter_deallocate_bandwidth(int client, int region) -{ - int i; - int total_assigned = 0; - - requested_slots[region][client] = 0; - active_clients[region][client] = 0; - - for (i = 0; i < NBR_OF_CLIENTS; i++) - total_assigned += requested_slots[region][i]; - - crisv32_arbiter_config(region, NBR_OF_SLOTS - total_assigned); -} - -int crisv32_arbiter_watch(unsigned long start, unsigned long size, - unsigned long clients, unsigned long accesses, - watch_callback *cb) -{ - int i; - - crisv32_arbiter_init(); - - if (start > 0x80000000) { - printk(KERN_ERR "Arbiter: %lX doesn't look like a " - "physical address", start); - return -EFAULT; - } - - spin_lock(&arbiter_lock); - - for (i = 0; i < NUMBER_OF_BP; i++) { - if (!watches[i].used) { - reg_marb_rw_intr_mask intr_mask = - REG_RD(marb, regi_marb, rw_intr_mask); - - watches[i].used = 1; - watches[i].start = start; - watches[i].end = start + size; - watches[i].cb = cb; - - REG_WR_INT(marb_bp, watches[i].instance, rw_first_addr, - watches[i].start); - REG_WR_INT(marb_bp, watches[i].instance, rw_last_addr, - watches[i].end); - REG_WR_INT(marb_bp, watches[i].instance, rw_op, - accesses); - REG_WR_INT(marb_bp, watches[i].instance, rw_clients, - clients); - - if (i == 0) - intr_mask.bp0 = regk_marb_yes; - else if (i == 1) - intr_mask.bp1 = regk_marb_yes; - else if (i == 2) - intr_mask.bp2 = regk_marb_yes; - else if (i == 3) - intr_mask.bp3 = regk_marb_yes; - - REG_WR(marb, regi_marb, rw_intr_mask, intr_mask); - spin_unlock(&arbiter_lock); - - return i; - } - } - spin_unlock(&arbiter_lock); - return -ENOMEM; -} - -int crisv32_arbiter_unwatch(int id) -{ - reg_marb_rw_intr_mask intr_mask = REG_RD(marb, regi_marb, rw_intr_mask); - - crisv32_arbiter_init(); - - spin_lock(&arbiter_lock); - - if ((id < 0) || (id >= NUMBER_OF_BP) || (!watches[id].used)) { - spin_unlock(&arbiter_lock); - return -EINVAL; - } - - memset(&watches[id], 0, sizeof(struct crisv32_watch_entry)); - - if (id == 0) - intr_mask.bp0 = regk_marb_no; - else if (id == 1) - intr_mask.bp1 = regk_marb_no; - else if (id == 2) - intr_mask.bp2 = regk_marb_no; - else if (id == 3) - intr_mask.bp3 = regk_marb_no; - - REG_WR(marb, regi_marb, rw_intr_mask, intr_mask); - - spin_unlock(&arbiter_lock); - return 0; -} - -extern void show_registers(struct pt_regs *regs); - -static irqreturn_t crisv32_arbiter_irq(int irq, void *dev_id) -{ - reg_marb_r_masked_intr masked_intr = - REG_RD(marb, regi_marb, r_masked_intr); - reg_marb_bp_r_brk_clients r_clients; - reg_marb_bp_r_brk_addr r_addr; - reg_marb_bp_r_brk_op r_op; - reg_marb_bp_r_brk_first_client r_first; - reg_marb_bp_r_brk_size r_size; - reg_marb_bp_rw_ack ack = { 0 }; - reg_marb_rw_ack_intr ack_intr = { - .bp0 = 1, .bp1 = 1, .bp2 = 1, .bp3 = 1 - }; - struct crisv32_watch_entry *watch; - - if (masked_intr.bp0) { - watch = &watches[0]; - ack_intr.bp0 = regk_marb_yes; - } else if (masked_intr.bp1) { - watch = &watches[1]; - ack_intr.bp1 = regk_marb_yes; - } else if (masked_intr.bp2) { - watch = &watches[2]; - ack_intr.bp2 = regk_marb_yes; - } else if (masked_intr.bp3) { - watch = &watches[3]; - ack_intr.bp3 = regk_marb_yes; - } else { - return IRQ_NONE; - } - - /* Retrieve all useful information and print it. */ - r_clients = REG_RD(marb_bp, watch->instance, r_brk_clients); - r_addr = REG_RD(marb_bp, watch->instance, r_brk_addr); - r_op = REG_RD(marb_bp, watch->instance, r_brk_op); - r_first = REG_RD(marb_bp, watch->instance, r_brk_first_client); - r_size = REG_RD(marb_bp, watch->instance, r_brk_size); - - printk(KERN_INFO "Arbiter IRQ\n"); - printk(KERN_INFO "Clients %X addr %X op %X first %X size %X\n", - REG_TYPE_CONV(int, reg_marb_bp_r_brk_clients, r_clients), - REG_TYPE_CONV(int, reg_marb_bp_r_brk_addr, r_addr), - REG_TYPE_CONV(int, reg_marb_bp_r_brk_op, r_op), - REG_TYPE_CONV(int, reg_marb_bp_r_brk_first_client, r_first), - REG_TYPE_CONV(int, reg_marb_bp_r_brk_size, r_size)); - - REG_WR(marb_bp, watch->instance, rw_ack, ack); - REG_WR(marb, regi_marb, rw_ack_intr, ack_intr); - - printk(KERN_INFO "IRQ occurred at %lX\n", get_irq_regs()->erp); - - if (watch->cb) - watch->cb(); - - return IRQ_HANDLED; -} diff --git a/arch/cris/arch-v32/mach-fs/dma.c b/arch/cris/arch-v32/mach-fs/dma.c deleted file mode 100644 index c0347a4f8c65..000000000000 --- a/arch/cris/arch-v32/mach-fs/dma.c +++ /dev/null @@ -1,229 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* Wrapper for DMA channel allocator that starts clocks etc */ - -#include <linux/kernel.h> -#include <linux/spinlock.h> -#include <asm/dma.h> -#include <hwregs/reg_map.h> -#include <hwregs/reg_rdwr.h> -#include <hwregs/marb_defs.h> -#include <hwregs/config_defs.h> -#include <hwregs/strmux_defs.h> -#include <linux/errno.h> -#include <mach/arbiter.h> - -static char used_dma_channels[MAX_DMA_CHANNELS]; -static const char *used_dma_channels_users[MAX_DMA_CHANNELS]; - -static DEFINE_SPINLOCK(dma_lock); - -int crisv32_request_dma(unsigned int dmanr, const char *device_id, - unsigned options, unsigned int bandwidth, - enum dma_owner owner) -{ - unsigned long flags; - reg_config_rw_clk_ctrl clk_ctrl; - reg_strmux_rw_cfg strmux_cfg; - - if (crisv32_arbiter_allocate_bandwidth(dmanr, - options & DMA_INT_MEM ? - INT_REGION : EXT_REGION, - bandwidth)) - return -ENOMEM; - - spin_lock_irqsave(&dma_lock, flags); - - if (used_dma_channels[dmanr]) { - spin_unlock_irqrestore(&dma_lock, flags); - if (options & DMA_VERBOSE_ON_ERROR) { - printk(KERN_ERR "Failed to request DMA %i for %s, " - "already allocated by %s\n", - dmanr, - device_id, - used_dma_channels_users[dmanr]); - } - if (options & DMA_PANIC_ON_ERROR) - panic("request_dma error!"); - return -EBUSY; - } - clk_ctrl = REG_RD(config, regi_config, rw_clk_ctrl); - strmux_cfg = REG_RD(strmux, regi_strmux, rw_cfg); - - switch (dmanr) { - case 0: - case 1: - clk_ctrl.dma01_eth0 = 1; - break; - case 2: - case 3: - clk_ctrl.dma23 = 1; - break; - case 4: - case 5: - clk_ctrl.dma45 = 1; - break; - case 6: - case 7: - clk_ctrl.dma67 = 1; - break; - case 8: - case 9: - clk_ctrl.dma89_strcop = 1; - break; -#if MAX_DMA_CHANNELS-1 != 9 -#error Check dma.c -#endif - default: - spin_unlock_irqrestore(&dma_lock, flags); - if (options & DMA_VERBOSE_ON_ERROR) { - printk(KERN_ERR "Failed to request DMA %i for %s, " - "only 0-%i valid)\n", - dmanr, device_id, MAX_DMA_CHANNELS - 1); - } - - if (options & DMA_PANIC_ON_ERROR) - panic("request_dma error!"); - return -EINVAL; - } - - switch (owner) { - case dma_eth0: - if (dmanr == 0) - strmux_cfg.dma0 = regk_strmux_eth0; - else if (dmanr == 1) - strmux_cfg.dma1 = regk_strmux_eth0; - else - panic("Invalid DMA channel for eth0\n"); - break; - case dma_eth1: - if (dmanr == 6) - strmux_cfg.dma6 = regk_strmux_eth1; - else if (dmanr == 7) - strmux_cfg.dma7 = regk_strmux_eth1; - else - panic("Invalid DMA channel for eth1\n"); - break; - case dma_iop0: - if (dmanr == 2) - strmux_cfg.dma2 = regk_strmux_iop0; - else if (dmanr == 3) - strmux_cfg.dma3 = regk_strmux_iop0; - else - panic("Invalid DMA channel for iop0\n"); - break; - case dma_iop1: - if (dmanr == 4) - strmux_cfg.dma4 = regk_strmux_iop1; - else if (dmanr == 5) - strmux_cfg.dma5 = regk_strmux_iop1; - else - panic("Invalid DMA channel for iop1\n"); - break; - case dma_ser0: - if (dmanr == 6) - strmux_cfg.dma6 = regk_strmux_ser0; - else if (dmanr == 7) - strmux_cfg.dma7 = regk_strmux_ser0; - else - panic("Invalid DMA channel for ser0\n"); - break; - case dma_ser1: - if (dmanr == 4) - strmux_cfg.dma4 = regk_strmux_ser1; - else if (dmanr == 5) - strmux_cfg.dma5 = regk_strmux_ser1; - else - panic("Invalid DMA channel for ser1\n"); - break; - case dma_ser2: - if (dmanr == 2) - strmux_cfg.dma2 = regk_strmux_ser2; - else if (dmanr == 3) - strmux_cfg.dma3 = regk_strmux_ser2; - else - panic("Invalid DMA channel for ser2\n"); - break; - case dma_ser3: - if (dmanr == 8) - strmux_cfg.dma8 = regk_strmux_ser3; - else if (dmanr == 9) - strmux_cfg.dma9 = regk_strmux_ser3; - else - panic("Invalid DMA channel for ser3\n"); - break; - case dma_sser0: - if (dmanr == 4) - strmux_cfg.dma4 = regk_strmux_sser0; - else if (dmanr == 5) - strmux_cfg.dma5 = regk_strmux_sser0; - else - panic("Invalid DMA channel for sser0\n"); - break; - case dma_sser1: - if (dmanr == 6) - strmux_cfg.dma6 = regk_strmux_sser1; - else if (dmanr == 7) - strmux_cfg.dma7 = regk_strmux_sser1; - else - panic("Invalid DMA channel for sser1\n"); - break; - case dma_ata: - if (dmanr == 2) - strmux_cfg.dma2 = regk_strmux_ata; - else if (dmanr == 3) - strmux_cfg.dma3 = regk_strmux_ata; - else - panic("Invalid DMA channel for ata\n"); - break; - case dma_strp: - if (dmanr == 8) - strmux_cfg.dma8 = regk_strmux_strcop; - else if (dmanr == 9) - strmux_cfg.dma9 = regk_strmux_strcop; - else - panic("Invalid DMA channel for strp\n"); - break; - case dma_ext0: - if (dmanr == 6) - strmux_cfg.dma6 = regk_strmux_ext0; - else - panic("Invalid DMA channel for ext0\n"); - break; - case dma_ext1: - if (dmanr == 7) - strmux_cfg.dma7 = regk_strmux_ext1; - else - panic("Invalid DMA channel for ext1\n"); - break; - case dma_ext2: - if (dmanr == 2) - strmux_cfg.dma2 = regk_strmux_ext2; - else if (dmanr == 8) - strmux_cfg.dma8 = regk_strmux_ext2; - else - panic("Invalid DMA channel for ext2\n"); - break; - case dma_ext3: - if (dmanr == 3) - strmux_cfg.dma3 = regk_strmux_ext3; - else if (dmanr == 9) - strmux_cfg.dma9 = regk_strmux_ext2; - else - panic("Invalid DMA channel for ext2\n"); - break; - } - - used_dma_channels[dmanr] = 1; - used_dma_channels_users[dmanr] = device_id; - REG_WR(config, regi_config, rw_clk_ctrl, clk_ctrl); - REG_WR(strmux, regi_strmux, rw_cfg, strmux_cfg); - spin_unlock_irqrestore(&dma_lock, flags); - return 0; -} - -void crisv32_free_dma(unsigned int dmanr) -{ - spin_lock(&dma_lock); - used_dma_channels[dmanr] = 0; - spin_unlock(&dma_lock); -} diff --git a/arch/cris/arch-v32/mach-fs/dram_init.S b/arch/cris/arch-v32/mach-fs/dram_init.S deleted file mode 100644 index e1a01fa4c272..000000000000 --- a/arch/cris/arch-v32/mach-fs/dram_init.S +++ /dev/null @@ -1,117 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * DRAM/SDRAM initialization - alter with care - * This file is intended to be included from other assembler files - * - * Note: This file may not modify r8 or r9 because they are used to - * carry information from the decompressor to the kernel - * - * Copyright (C) 2000-2007 Axis Communications AB - * - * Authors: Mikael Starvik <starvik@axis.com> - */ - -/* Just to be certain the config file is included, we include it here - * explicitly instead of depending on it being included in the file that - * uses this code. - */ - -#include <hwregs/asm/reg_map_asm.h> -#include <hwregs/asm/bif_core_defs_asm.h> - - ;; WARNING! The registers r8 and r9 are used as parameters carrying - ;; information from the decompressor (if the kernel was compressed). - ;; They should not be used in the code below. - - ; Refer to BIF MDS for a description of SDRAM initialization - - ; Bank configuration - move.d REG_ADDR(bif_core, regi_bif_core, rw_sdram_cfg_grp0), $r0 - move.d CONFIG_ETRAX_SDRAM_GRP0_CONFIG, $r1 - move.d $r1, [$r0] - move.d REG_ADDR(bif_core, regi_bif_core, rw_sdram_cfg_grp1), $r0 - move.d CONFIG_ETRAX_SDRAM_GRP1_CONFIG, $r1 - move.d $r1, [$r0] - - ; Calculate value of mrs_data - ; CAS latency = 2 && bus_width = 32 => 0x40 - ; CAS latency = 3 && bus_width = 32 => 0x60 - ; CAS latency = 2 && bus_width = 16 => 0x20 - ; CAS latency = 3 && bus_width = 16 => 0x30 - - ; Check if value is already supplied in kernel config - move.d CONFIG_ETRAX_SDRAM_COMMAND, $r2 - bne _set_timing - nop - - move.d 0x40, $r4 ; Assume 32 bits and CAS latency = 2 - move.d CONFIG_ETRAX_SDRAM_TIMING, $r1 - and.d 0x07, $r1 ; Get CAS latency - cmpq 2, $r1 ; CL = 2 ? - beq _bw_check - nop - move.d 0x60, $r4 - -_bw_check: - ; Assume that group 0 width is equal to group 1. This assumption - ; is wrong for a group 1 only hardware (such as the grand old - ; StorPoint+). - move.d CONFIG_ETRAX_SDRAM_GRP0_CONFIG, $r1 - and.d 0x200, $r1 ; DRAM width is bit 9 - beq _set_timing - lslq 2, $r4 ; mrs_data starts at bit 2 - lsrq 1, $r4 ; 16 bits. Shift down value. - - ; Set timing parameters (refresh off to avoid Guinness TR 83) -_set_timing: - move.d CONFIG_ETRAX_SDRAM_TIMING, $r1 - and.d ~(3 << reg_bif_core_rw_sdram_timing___ref___lsb), $r1 - move.d REG_ADDR(bif_core, regi_bif_core, rw_sdram_timing), $r0 - move.d $r1, [$r0] - - ; Issue NOP command - move.d REG_ADDR(bif_core, regi_bif_core, rw_sdram_cmd), $r5 - moveq regk_bif_core_nop, $r1 - move.d $r1, [$r5] - - ; Wait 200us - move.d 10000, $r2 -1: bne 1b - subq 1, $r2 - - ; Issue initialization command sequence - lapc _sdram_commands_start, $r2 - lapc _sdram_commands_end, $r3 -1: clear.d $r6 - move.b [$r2+], $r6 ; Load command - or.d $r4, $r6 ; Add calculated mrs - move.d $r6, [$r5] ; Write rw_sdram_cmd - ; Wait 80 ns between each command - move.d 4000, $r7 -2: bne 2b - subq 1, $r7 - cmp.d $r2, $r3 ; Last command? - bne 1b - nop - - ; Start refresh - move.d CONFIG_ETRAX_SDRAM_TIMING, $r1 - move.d REG_ADDR(bif_core, regi_bif_core, rw_sdram_timing), $r0 - move.d $r1, [$r0] - - ; Initialization finished - ba _sdram_commands_end - nop - -_sdram_commands_start: - .byte regk_bif_core_pre ; Precharge - .byte regk_bif_core_ref ; refresh - .byte regk_bif_core_ref ; refresh - .byte regk_bif_core_ref ; refresh - .byte regk_bif_core_ref ; refresh - .byte regk_bif_core_ref ; refresh - .byte regk_bif_core_ref ; refresh - .byte regk_bif_core_ref ; refresh - .byte regk_bif_core_ref ; refresh - .byte regk_bif_core_mrs ; mrs -_sdram_commands_end: diff --git a/arch/cris/arch-v32/mach-fs/hw_settings.S b/arch/cris/arch-v32/mach-fs/hw_settings.S deleted file mode 100644 index 7fbadcc48c0c..000000000000 --- a/arch/cris/arch-v32/mach-fs/hw_settings.S +++ /dev/null @@ -1,71 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * This table is used by some tools to extract hardware parameters. - * The table should be included in the kernel and the decompressor. - * Don't forget to update the tools if you change this table. - * - * Copyright (C) 2001-2007 Axis Communications AB - * - * Authors: Mikael Starvik <starvik@axis.com> - */ - -#include <hwregs/asm/reg_map_asm.h> -#include <hwregs/asm/bif_core_defs_asm.h> -#include <hwregs/asm/gio_defs_asm.h> - - .ascii "HW_PARAM_MAGIC" ; Magic number - .dword 0xc0004000 ; Kernel start address - - ; Debug port -#ifdef CONFIG_ETRAX_DEBUG_PORT0 - .dword 0 -#elif defined(CONFIG_ETRAX_DEBUG_PORT1) - .dword 1 -#elif defined(CONFIG_ETRAX_DEBUG_PORT2) - .dword 2 -#elif defined(CONFIG_ETRAX_DEBUG_PORT3) - .dword 3 -#else - .dword 4 ; No debug -#endif - - ; Register values - .dword REG_ADDR(bif_core, regi_bif_core, rw_grp1_cfg) - .dword CONFIG_ETRAX_MEM_GRP1_CONFIG - .dword REG_ADDR(bif_core, regi_bif_core, rw_grp2_cfg) - .dword CONFIG_ETRAX_MEM_GRP2_CONFIG - .dword REG_ADDR(bif_core, regi_bif_core, rw_grp3_cfg) - .dword CONFIG_ETRAX_MEM_GRP3_CONFIG - .dword REG_ADDR(bif_core, regi_bif_core, rw_grp4_cfg) - .dword CONFIG_ETRAX_MEM_GRP4_CONFIG - .dword REG_ADDR(bif_core, regi_bif_core, rw_sdram_cfg_grp0) - .dword CONFIG_ETRAX_SDRAM_GRP0_CONFIG - .dword REG_ADDR(bif_core, regi_bif_core, rw_sdram_cfg_grp1) - .dword CONFIG_ETRAX_SDRAM_GRP1_CONFIG - .dword REG_ADDR(bif_core, regi_bif_core, rw_sdram_timing) - .dword CONFIG_ETRAX_SDRAM_TIMING - .dword REG_ADDR(bif_core, regi_bif_core, rw_sdram_cmd) - .dword CONFIG_ETRAX_SDRAM_COMMAND - - .dword REG_ADDR(gio, regi_gio, rw_pa_dout) - .dword CONFIG_ETRAX_DEF_GIO_PA_OUT - .dword REG_ADDR(gio, regi_gio, rw_pa_oe) - .dword CONFIG_ETRAX_DEF_GIO_PA_OE - .dword REG_ADDR(gio, regi_gio, rw_pb_dout) - .dword CONFIG_ETRAX_DEF_GIO_PB_OUT - .dword REG_ADDR(gio, regi_gio, rw_pb_oe) - .dword CONFIG_ETRAX_DEF_GIO_PB_OE - .dword REG_ADDR(gio, regi_gio, rw_pc_dout) - .dword CONFIG_ETRAX_DEF_GIO_PC_OUT - .dword REG_ADDR(gio, regi_gio, rw_pc_oe) - .dword CONFIG_ETRAX_DEF_GIO_PC_OE - .dword REG_ADDR(gio, regi_gio, rw_pd_dout) - .dword CONFIG_ETRAX_DEF_GIO_PD_OUT - .dword REG_ADDR(gio, regi_gio, rw_pd_oe) - .dword CONFIG_ETRAX_DEF_GIO_PD_OE - .dword REG_ADDR(gio, regi_gio, rw_pe_dout) - .dword CONFIG_ETRAX_DEF_GIO_PE_OUT - .dword REG_ADDR(gio, regi_gio, rw_pe_oe) - .dword CONFIG_ETRAX_DEF_GIO_PE_OE - - .dword 0 ; No more register values diff --git a/arch/cris/arch-v32/mach-fs/pinmux.c b/arch/cris/arch-v32/mach-fs/pinmux.c deleted file mode 100644 index a0b2f101003a..000000000000 --- a/arch/cris/arch-v32/mach-fs/pinmux.c +++ /dev/null @@ -1,328 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Allocator for I/O pins. All pins are allocated to GPIO at bootup. - * Unassigned pins and GPIO pins can be allocated to a fixed interface - * or the I/O processor instead. - * - * Copyright (c) 2004-2007 Axis Communications AB. - */ - -#include <linux/init.h> -#include <linux/errno.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/spinlock.h> -#include <hwregs/reg_map.h> -#include <hwregs/reg_rdwr.h> -#include <pinmux.h> -#include <hwregs/pinmux_defs.h> - -#undef DEBUG - -#define PORT_PINS 18 -#define PORTS 4 - -static char pins[PORTS][PORT_PINS]; -static DEFINE_SPINLOCK(pinmux_lock); - -static void crisv32_pinmux_set(int port); - -static int __crisv32_pinmux_alloc(int port, int first_pin, int last_pin, - enum pin_mode mode) -{ - int i; - - for (i = first_pin; i <= last_pin; i++) { - if ((pins[port][i] != pinmux_none) - && (pins[port][i] != pinmux_gpio) - && (pins[port][i] != mode)) { -#ifdef DEBUG - panic("Pinmux alloc failed!\n"); -#e |